PowerPC system emulation fixes (Jocelyn Mayer)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@722 c046a42c-6fe2-441c-8c8c-71466251a162

PowerPC system emulation fixes (Jocelyn Mayer)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@722 c046a42c-6fe2-441c-8c8c-71466251a162
bellard
1 parent df475d18
Showing 24 changed files with 1523 additions and 863 deletions
Makefile.target
configure
cpu-exec.c
exec-all.h
exec.c
gdbstub.c
hw/fdc.c
hw/i8259.c
hw/m48t59.c
hw/m48t59.h
hw/ne2000.c
hw/ppc.c
target-ppc/hw.c → hw/ppc_prep.c
linux-user/main.c
linux-user/syscall.c
monitor.c
target-ppc/cpu.h
target-ppc/exec.h
target-ppc/helper.c
target-ppc/op.c
@@ -16,8 +16,12 @@ DYNGEN=../dyngen$(EXESUF)
 QEMU_USER=qemu-$(TARGET_ARCH)
 # system emulator name
 ifdef CONFIG_SOFTMMU
+ifeq ($(TARGET_ARCH), i386)
 QEMU_SYSTEM=qemu$(EXESUF)
 else
+QEMU_SYSTEM=qemu-system-$(TARGET_ARCH)$(EXESUF)
+endif
+else
 QEMU_SYSTEM=qemu-fast
 endif
  
@@ -222,14 +226,23 @@ ifeq ($(ARCH),alpha)
 endif
  
 # must use static linking to avoid leaving stuff in virtual address space
-VL_OBJS=vl.o osdep.o block.o monitor.o \
-        ide.o ne2000.o pckbd.o vga.o sb16.o dma.o oss.o \
-        fdc.o mc146818rtc.o serial.o i8259.o i8254.o pc.o
-ifdef CONFIG_GDBSTUB
-VL_OBJS+=gdbstub.o 
+VL_OBJS=vl.o osdep.o block.o monitor.o
+
+ifeq ($(TARGET_ARCH), i386)
+# Hardware support
+VL_OBJS+= ide.o ne2000.o pckbd.o vga.o sb16.o dma.o oss.o
+VL_OBJS+= fdc.o mc146818rtc.o serial.o i8259.o i8254.o pc.o
 endif
 ifeq ($(TARGET_ARCH), ppc)
-VL_OBJS+= hw.o
+# Generic PPC support
+VL_OBJS+= ppc.o
+# PREP hardware support
+VL_OBJS+= ide.o ne2000.o pckbd.o vga.o sb16.o dma.o oss.o
+VL_OBJS+= mc146818rtc.o serial.o i8259.o i8254.o fdc.o m48t59.o ppc_prep.o
+#VL_OBJS+= hw.o of.o setup.o
+endif
+ifdef CONFIG_GDBSTUB
+VL_OBJS+=gdbstub.o 
 endif
 ifdef CONFIG_SDL
 VL_OBJS+=sdl.o
@@ -27,7 +27,7 @@ ar=&quot;ar&quot;
 make="make"
 strip="strip"
 cpu=`uname -m`
-target_list="i386-user i386 i386-softmmu arm-user sparc-user ppc-user"
+target_list="i386-user i386 i386-softmmu arm-user sparc-user ppc-user ppc-softmmu"
 case "$cpu" in
   i386|i486|i586|i686|i86pc|BePC)
     cpu="i386"
@@ -190,7 +190,7 @@ int cpu_exec(CPUState *env1)
                         (env->eflags & IF_MASK) && 
                         !(env->hflags & HF_INHIBIT_IRQ_MASK)) {
                         int intno;
-                        intno = cpu_x86_get_pic_interrupt(env);
+                        intno = cpu_get_pic_interrupt(env);
                         if (loglevel & CPU_LOG_TB_IN_ASM) {
                             fprintf(logfile, "Servicing hardware INT=0x%02x\n", intno);
                         }
@@ -578,7 +578,13 @@ static inline target_ulong get_phys_addr_code(CPUState *env, target_ulong addr)
 #endif
     if (__builtin_expect(env->tlb_read[is_user][index].address != 
                          (addr & TARGET_PAGE_MASK), 0)) {
+#if defined (TARGET_PPC)
+	env->access_type = ACCESS_CODE;
+	ldub_code((void *)addr);
+	env->access_type = ACCESS_INT;
+#else
         ldub_code((void *)addr);
+#endif
     }
     return addr + env->tlb_read[is_user][index].addend - (unsigned long)phys_ram_base;
 }
@@ -914,7 +914,7 @@ static void tb_reset_jump_recursive(TranslationBlock *tb)
    breakpoint is reached */
 int cpu_breakpoint_insert(CPUState *env, uint32_t pc)
 {
-#if defined(TARGET_I386)
+#if defined(TARGET_I386) || defined(TARGET_PPC)
     int i;
  
     for(i = 0; i < env->nb_breakpoints; i++) {
@@ -935,7 +935,7 @@ int cpu_breakpoint_insert(CPUState *env, uint32_t pc)
 /* remove a breakpoint */
 int cpu_breakpoint_remove(CPUState *env, uint32_t pc)
 {
-#if defined(TARGET_I386)
+#if defined(TARGET_I386) || defined(TARGET_PPC)
     int i;
     for(i = 0; i < env->nb_breakpoints; i++) {
         if (env->breakpoints[i] == pc)
@@ -957,7 +957,7 @@ int cpu_breakpoint_remove(CPUState *env, uint32_t pc)
    CPU loop after each instruction */
 void cpu_single_step(CPUState *env, int enabled)
 {
-#if defined(TARGET_I386)
+#if defined(TARGET_I386) || defined(TARGET_PPC)
     if (env->singlestep_enabled != enabled) {
         env->singlestep_enabled = enabled;
         /* must flush all the translated code to avoid inconsistancies */
@@ -220,42 +220,49 @@ static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
 }
  
 #elif defined (TARGET_PPC)
-static void to_le32(uint8_t *p, int v)
+static void to_le32(uint32_t *buf, uint32_t v)
 {
+    uint8_t *p = (uint8_t *)buf;
     p[3] = v;
     p[2] = v >> 8;
     p[1] = v >> 16;
     p[0] = v >> 24;
 }
  
+static uint32_t from_le32 (uint32_t *buf)
+{
+    uint8_t *p = (uint8_t *)buf;
+
+    return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
+}
+
 static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf)
 {
-    uint32_t tmp;
+    uint32_t *registers = (uint32_t *)mem_buf, tmp;
     int i;
  
     /* fill in gprs */
-    for(i = 0; i < 8; i++) {
-        to_le32(mem_buf + i * 4, env->gpr[i]);
+    for(i = 0; i < 32; i++) {
+        to_le32(&registers[i], env->gpr[i]);
     }
     /* fill in fprs */
     for (i = 0; i < 32; i++) {
-        to_le32(mem_buf + (i * 2) + 32, *((uint32_t *)&env->fpr[i]));
-	to_le32(mem_buf + (i * 2) + 33, *((uint32_t *)&env->fpr[i] + 1));
+        to_le32(&registers[(i * 2) + 32], *((uint32_t *)&env->fpr[i]));
+	to_le32(&registers[(i * 2) + 33], *((uint32_t *)&env->fpr[i] + 1));
     }
     /* nip, msr, ccr, lnk, ctr, xer, mq */
-    to_le32(mem_buf + 96, tswapl(env->nip));
-    to_le32(mem_buf + 97, tswapl(_load_msr()));
-    to_le32(mem_buf + 98, 0);
+    to_le32(&registers[96], (uint32_t)env->nip/* - 4*/);
+    to_le32(&registers[97], _load_msr(env));
     tmp = 0;
     for (i = 0; i < 8; i++)
-        tmp |= env->crf[i] << (32 - (i * 4));
-    to_le32(mem_buf + 98, tmp);
-    to_le32(mem_buf + 99, tswapl(env->lr));
-    to_le32(mem_buf + 100, tswapl(env->ctr));
-    to_le32(mem_buf + 101, tswapl(_load_xer()));
-    to_le32(mem_buf + 102, 0);
-
-    return 102;
+        tmp |= env->crf[i] << (32 - ((i + 1) * 4));
+    to_le32(&registers[98], tmp);
+    to_le32(&registers[99], env->lr);
+    to_le32(&registers[100], env->ctr);
+    to_le32(&registers[101], _load_xer(env));
+    to_le32(&registers[102], 0);
+
+    return 103 * 4;
 }
  
 static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
@@ -265,22 +272,22 @@ static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size)
  
     /* fill in gprs */
     for (i = 0; i < 32; i++) {
-        env->gpr[i] = tswapl(registers[i]);
+        env->gpr[i] = from_le32(&registers[i]);
     }
     /* fill in fprs */
     for (i = 0; i < 32; i++) {
-        *((uint32_t *)&env->fpr[i]) = tswapl(registers[(i * 2) + 32]);
-	*((uint32_t *)&env->fpr[i] + 1) = tswapl(registers[(i * 2) + 33]);
+        *((uint32_t *)&env->fpr[i]) = from_le32(&registers[(i * 2) + 32]);
+	*((uint32_t *)&env->fpr[i] + 1) = from_le32(&registers[(i * 2) + 33]);
     }
     /* nip, msr, ccr, lnk, ctr, xer, mq */
-    env->nip = tswapl(registers[96]);
-    _store_msr(tswapl(registers[97]));
-    registers[98] = tswapl(registers[98]);
+    env->nip = from_le32(&registers[96]);
+    _store_msr(env, from_le32(&registers[97]));
+    registers[98] = from_le32(&registers[98]);
     for (i = 0; i < 8; i++)
-        env->crf[i] = (registers[98] >> (32 - (i * 4))) & 0xF;
-    env->lr = tswapl(registers[99]);
-    env->ctr = tswapl(registers[100]);
-    _store_xer(tswapl(registers[101]));
+        env->crf[i] = (registers[98] >> (32 - ((i + 1) * 4))) & 0xF;
+    env->lr = from_le32(&registers[99]);
+    env->ctr = from_le32(&registers[100]);
+    _store_xer(env, from_le32(&registers[101]));
 }
 #else
  
@@ -83,7 +83,6 @@ typedef struct fdrive_t {
     uint8_t dir;              /* Direction              */
     uint8_t rw;               /* Read/write             */
     /* Media */
-    fdisk_type_t disk;        /* Disk type              */
     fdisk_flags_t flags;
     uint8_t last_sect;        /* Nb sector per track    */
     uint8_t max_track;        /* Nb of tracks           */
@@ -102,7 +101,6 @@ static void fd_init (fdrive_t *drv, BlockDriverState *bs)
     drv->drflags = 0;
     drv->perpendicular = 0;
     /* Disk */
-    drv->disk = FDRIVE_DISK_NONE;
     drv->last_sect = 0;
     drv->max_track = 0;
 }
@@ -171,26 +169,113 @@ static void fd_recalibrate (fdrive_t *drv)
     drv->rw = 0;
 }
  
+/* Recognize floppy formats */
+typedef struct fd_format_t {
+    fdrive_type_t drive;
+    fdisk_type_t  disk;
+    uint8_t last_sect;
+    uint8_t max_track;
+    uint8_t max_head;
+    const unsigned char *str;
+} fd_format_t;
+
+static fd_format_t fd_formats[] = {
+    /* First entry is default format */
+    /* 1.44 MB 3"1/2 floppy disks */
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1,  "1.6 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
+    /* 2.88 MB 3"1/2 floppy disks */
+    { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
+    { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
+    { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1,  "3.2 MB 3\"1/2", },
+    { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
+    { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
+    /* 720 kB 3"1/2 floppy disks */
+    { FDRIVE_DRV_144, FDRIVE_DISK_720,  9, 80, 1,  "720 kB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1,  "800 kB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1,  "820 kB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1,  "830 kB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
+    { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
+    /* 1.2 MB 5"1/4 floppy disks */
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1,  "1.2 kB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1,  "1.6 MB 5\"1/4", },
+    /* 720 kB 5"1/4 floppy disks */
+    { FDRIVE_DRV_120, FDRIVE_DISK_288,  9, 80, 1,  "720 kB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1,  "880 kB 5\"1/4", },
+    /* 360 kB 5"1/4 floppy disks */
+    { FDRIVE_DRV_120, FDRIVE_DISK_288,  9, 40, 1,  "360 kB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288,  9, 40, 0,  "180 kB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1,  "410 kB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1,  "420 kB 5\"1/4", },
+    /* 320 kB 5"1/4 floppy disks */ 
+    { FDRIVE_DRV_120, FDRIVE_DISK_288,  8, 40, 1,  "320 kB 5\"1/4", },
+    { FDRIVE_DRV_120, FDRIVE_DISK_288,  8, 40, 0,  "160 kB 5\"1/4", },
+    /* 360 kB must match 5"1/4 better than 3"1/2... */
+    { FDRIVE_DRV_144, FDRIVE_DISK_720,  9, 80, 0,  "360 kB 3\"1/2", },
+    /* end */
+    { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
+};
+
 /* Revalidate a disk drive after a disk change */
 static void fd_revalidate (fdrive_t *drv)
 {
-    int64_t nb_sectors;
+    fd_format_t *parse;
+    int64_t nb_sectors, size;
+    int i, first_match, match;
     int nb_heads, max_track, last_sect, ro;
  
     FLOPPY_DPRINTF("revalidate\n");
     drv->drflags &= ~FDRIVE_REVALIDATE;
-
-    /* if no drive present, cannot do more */
-    if (!drv->bs)
-        return;
-
-    if (bdrv_is_inserted(drv->bs)) {
+    if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
 	ro = bdrv_is_read_only(drv->bs);
-	bdrv_get_geometry_hint(drv->bs, &max_track, &nb_heads, &last_sect);
+	bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
 	if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
-	    drv->disk = FDRIVE_DISK_USER;
 	    printf("User defined disk (%d %d %d)",
 		   nb_heads - 1, max_track, last_sect);
+	} else {
+	    bdrv_get_geometry(drv->bs, &nb_sectors);
+	    match = -1;
+	    first_match = -1;
+	    for (i = 0;; i++) {
+		parse = &fd_formats[i];
+		if (parse->drive == FDRIVE_DRV_NONE)
+		    break;
+		if (drv->drive == parse->drive ||
+		    drv->drive == FDRIVE_DRV_NONE) {
+		    size = (parse->max_head + 1) * parse->max_track *
+			parse->last_sect;
+		    if (nb_sectors == size) {
+			match = i;
+			break;
+		    }
+		    if (first_match == -1)
+			first_match = i;
+		}
+	    }
+	    if (match == -1) {
+		if (first_match == -1)
+		    match = 1;
+		else
+		    match = first_match;
+		parse = &fd_formats[match];
+	    }
+	    nb_heads = parse->max_head + 1;
+	    max_track = parse->max_track;
+	    last_sect = parse->last_sect;
+	    drv->drive = parse->drive;
+	    printf("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
+		   nb_heads, max_track, last_sect, ro ? "ro" : "rw");
+	}
 	    if (nb_heads == 1) {
 		drv->flags &= ~FDISK_DBL_SIDES;
 	    } else {
@@ -198,236 +283,9 @@ static void fd_revalidate (fdrive_t *drv)
 	    }
 	    drv->max_track = max_track;
 	    drv->last_sect = last_sect;
-	} else {
-        bdrv_get_geometry(drv->bs, &nb_sectors);
-	    switch (nb_sectors) {
-            /* 2.88 MB 3"1/2 drive disks */
-	    case 7680:
-		printf("3.84 Mb 3\"1/2 disk (1 80 48)");
-		drv->drive = FDRIVE_DRV_288;
-		drv->disk = FDRIVE_DISK_288;
-		drv->last_sect = 48;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 7040:
-		printf("3.52 Mb 3\"1/2 disk (1 80 44)");
-		drv->drive = FDRIVE_DRV_288;
-		drv->disk = FDRIVE_DISK_288;
-		drv->last_sect = 44;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 6400:
-		printf("3.2 Mb 3\"1/2 disk (1 80 40)");
-		drv->drive = FDRIVE_DRV_288;
-		drv->disk = FDRIVE_DISK_288;
-		drv->last_sect = 40;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 6240:
-		printf("3.12 Mb 3\"1/2 disk (1 80 39)");
-		drv->drive = FDRIVE_DRV_288;
-		drv->disk = FDRIVE_DISK_288;
-		drv->last_sect = 39;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 5760:
-		printf("2.88 Mb 3\"1/2 disk (1 80 36)");
-		drv->drive = FDRIVE_DRV_288;
-            drv->disk = FDRIVE_DISK_288;
-            drv->last_sect = 36;
-            drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-
-            /* 1.44 MB 3"1/2 drive disks */
-	    case 3840:
-		printf("1.92 Mb 3\"1/2 disk (1 80 24)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 24;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 3680:
-		printf("1.84 Mb 3\"1/2 disk (1 80 23)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 23;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 3520:
-		printf("1.76 Mb 3\"1/2 disk (1 80 22)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 22;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 3486:
-		printf("1.74 Mb 3\"1/2 disk (1 83 21)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 21;
-		drv->max_track = 83;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 3444:
-		printf("1.72 Mb 3\"1/2 disk (1 82 21)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 21;
-		drv->max_track = 82;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 3360:
-		printf("1.68 Mb 3\"1/2 disk (1 80 21)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 21;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 3200:
-		printf("1.6 Mb 3\"1/2 disk (1 80 20)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_144;
-		drv->last_sect = 20;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 2880:
-	    default:
-		printf("1.44 Mb 3\"1/2 disk (1 80 18)");
-		drv->drive = FDRIVE_DRV_144;
-            drv->disk = FDRIVE_DISK_144;
-            drv->last_sect = 18;
-            drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-
-            /* 720 kB 3"1/2 drive disks */
-	    case 2240:
-		printf("1.12 Mb 3\"1/2 disk (1 80 14)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_720;
-		drv->last_sect = 14;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 2080:
-		printf("1.04 Mb 3\"1/2 disk (1 80 13)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_720;
-		drv->last_sect = 13;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 1660:
-		printf("830 kb 3\"1/2 disk (1 83 10)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_720;
-		drv->last_sect = 10;
-		drv->max_track = 83;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 1640:
-		printf("820 kb 3\"1/2 disk (1 82 10)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_720;
-		drv->last_sect = 10;
-		drv->max_track = 82;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 1600:
-		printf("800 kb 3\"1/2 disk (1 80 10)");
-		drv->drive = FDRIVE_DRV_144;
-		drv->disk = FDRIVE_DISK_720;
-		drv->last_sect = 10;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 1440:
-		printf("720 kb 3\"1/2 disk (1 80 9)");
-		drv->drive = FDRIVE_DRV_144;
-            drv->disk = FDRIVE_DISK_720;
-            drv->last_sect = 9;
-            drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-
-	    /* 1.2 MB 5"1/4 drive disks */
-	    case 2988:
-		printf("1.49 Mb 5\"1/4 disk (1 83 18)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 18;
-		drv->max_track = 83;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 2952:
-		printf("1.48 Mb 5\"1/4 disk (1 82 18)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 18;
-		drv->max_track = 82;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-	    case 2400:
-		printf("1.2 Mb 5\"1/4 disk (1 80 15)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 15;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-
-	    case 1760:
-		printf("880 kb 5\"1/4 disk (1 80 11)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 11;
-		drv->max_track = 80;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-
-	    /* 360 kB 5"1/4 drive disks */
-	    case 840:
-		/* 420 kB 5"1/4 disk */
-		printf("420 kb 5\"1/4 disk (1 42 10)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 10;
-		drv->max_track = 42;
-		drv->flags |= FDISK_DBL_SIDES;
-	    case 820:
-		/* 410 kB 5"1/4 disk */
-		printf("410 kb 5\"1/4 disk (1 41 10)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 10;
-		drv->max_track = 41;
-		drv->flags |= FDISK_DBL_SIDES;
-	    case 720:
-		/* 360 kB 5"1/4 disk */
-		printf("360 kb 5\"1/4 disk (1 40 9)");
-		drv->drive = FDRIVE_DRV_120;
-		drv->disk = FDRIVE_DISK_144; /* ? */
-		drv->last_sect = 9;
-		drv->max_track = 40;
-		drv->flags |= FDISK_DBL_SIDES;
-		break;
-        }
-	    printf(" %s\n", ro == 0 ? "rw" : "ro");
-	}
 	drv->ro = ro;
     } else {
 	printf("No disk in drive\n");
-        drv->disk = FDRIVE_DISK_NONE;
         drv->last_sect = 0;
 	drv->max_track = 0;
 	drv->flags &= ~FDISK_DBL_SIDES;
@@ -544,20 +402,29 @@ static uint32_t fdctrl_read (void *opaque, uint32_t reg)
     fdctrl_t *fdctrl = opaque;
     uint32_t retval;
  
-    if (reg == fdctrl->io_base + 0x01)
+    switch (reg & 0x07) {
+    case 0x01:
 	retval = fdctrl_read_statusB(fdctrl);
-    else if (reg == fdctrl->io_base + 0x02)
+	break;
+    case 0x02:
 	retval = fdctrl_read_dor(fdctrl);
-    else if (reg == fdctrl->io_base + 0x03)
+	break;
+    case 0x03:
         retval = fdctrl_read_tape(fdctrl);
-    else if (reg == fdctrl->io_base + 0x04)
+	break;
+    case 0x04:
         retval = fdctrl_read_main_status(fdctrl);
-    else if (reg == fdctrl->io_base + 0x05)
+	break;
+    case 0x05:
         retval = fdctrl_read_data(fdctrl);
-    else if (reg == fdctrl->io_base + 0x07)
+	break;
+    case 0x07:
         retval = fdctrl_read_dir(fdctrl);
-    else 
+	break;
+    default:
 	retval = (uint32_t)(-1);
+	break;
+    }
  
     return retval;
 }
@@ -566,14 +433,22 @@ static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
 {
     fdctrl_t *fdctrl = opaque;
  
-    if (reg == fdctrl->io_base + 0x02)
+    switch (reg & 0x07) {
+    case 0x02:
 	fdctrl_write_dor(fdctrl, value);
-    else if (reg == fdctrl->io_base + 0x03)
+	break;
+    case 0x03:
         fdctrl_write_tape(fdctrl, value);
-    else if (reg == fdctrl->io_base + 0x04)
+	break;
+    case 0x04:
         fdctrl_write_rate(fdctrl, value);
-    else if (reg == fdctrl->io_base + 0x05)
+	break;
+    case 0x05:
         fdctrl_write_data(fdctrl, value);
+	break;
+    default:
+	break;
+    }
 }
  
 static void fd_change_cb (void *opaque)
@@ -581,7 +456,6 @@ static void fd_change_cb (void *opaque)
     fdrive_t *drv = opaque;
  
     FLOPPY_DPRINTF("disk change\n");
-    /* TODO: use command-line parameters to force geometry */
     fd_revalidate(drv);
 #if 0
     fd_recalibrate(drv);
@@ -606,7 +480,7 @@ fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped,
     fdctrl->irq_lvl = irq_lvl;
     fdctrl->dma_chann = dma_chann;
     fdctrl->io_base = io_base;
-    fdctrl->config = 0x40; /* Implicit seek, polling & FIFO enabled */
+    fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
     if (fdctrl->dma_chann != -1) {
         fdctrl->dma_en = 1;
         DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
@@ -634,9 +508,10 @@ fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped,
         register_ioport_write(io_base + 0x01, 5, 1, &fdctrl_write, fdctrl);
         register_ioport_write(io_base + 0x07, 1, 1, &fdctrl_write, fdctrl);
     }
-    for (i = 0; i < MAX_FD; i++) {
+    for (i = 0; i < 2; i++) {
         fd_revalidate(&fdctrl->drives[i]);
     }
+
     return fdctrl;
 }
  
@@ -174,7 +174,7 @@ static inline void pic_intack(PicState *s, int irq)
     s->irr &= ~(1 << irq);
 }
  
-int cpu_x86_get_pic_interrupt(CPUState *env)
+int cpu_get_pic_interrupt(CPUState *env)
 {
     int irq, irq2, intno;
  
+/*
+ * QEMU M48T59 NVRAM emulation for PPC PREP platform
+ * 
+ * Copyright (c) 2003-2004 Jocelyn Mayer
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdio.h> /* needed by vl.h */
+#include <stdint.h>
+#include <string.h>
+#include <time.h>
+
+#include "vl.h"
+
+//#define NVRAM_DEBUG
+
+#if defined(NVRAM_DEBUG)
+#define NVRAM_PRINTF(fmt, args...) do { printf(fmt , ##args); } while (0)
+#else
+#define NVRAM_PRINTF(fmt, args...) do { } while (0)
+#endif
+
+typedef struct m48t59_t {
+    /* Hardware parameters */
+    int      IRQ;
+    uint32_t io_base;
+    uint16_t size;
+    /* RTC management */
+    time_t   time_offset;
+    time_t   stop_time;
+    /* Alarm & watchdog */
+    time_t   alarm;
+    struct QEMUTimer *alrm_timer;
+    struct QEMUTimer *wd_timer;
+    /* NVRAM storage */
+    uint16_t addr;
+    uint8_t *buffer;
+} m48t59_t;
+
+static m48t59_t *NVRAMs;
+static int nb_NVRAMs;
+
+/* Fake timer functions */
+/* Generic helpers for BCD */
+static inline uint8_t toBCD (uint8_t value)
+{
+    return (((value / 10) % 10) << 4) | (value % 10);
+}
+
+static inline uint8_t fromBCD (uint8_t BCD)
+{
+    return ((BCD >> 4) * 10) + (BCD & 0x0F);
+}
+
+/* RTC management helpers */
+static void get_time (m48t59_t *NVRAM, struct tm *tm)
+{
+    time_t t;
+
+    t = time(NULL) + NVRAM->time_offset;
+    localtime_r(&t, tm);
+}
+
+static void set_time (m48t59_t *NVRAM, struct tm *tm)
+{
+    time_t now, new_time;
+    
+    new_time = mktime(tm);
+    now = time(NULL);
+    NVRAM->time_offset = new_time - now;
+}
+
+/* Alarm management */
+static void alarm_cb (void *opaque)
+{
+    struct tm tm, tm_now;
+    uint64_t next_time;
+    m48t59_t *NVRAM = opaque;
+
+    pic_set_irq(NVRAM->IRQ, 1);
+    if ((NVRAM->buffer[0x1FF5] & 0x80) == 0 && 
+	(NVRAM->buffer[0x1FF4] & 0x80) == 0 &&
+	(NVRAM->buffer[0x1FF3] & 0x80) == 0 &&
+	(NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+	/* Repeat once a month */
+	get_time(NVRAM, &tm_now);
+	memcpy(&tm, &tm_now, sizeof(struct tm));
+	tm.tm_mon++;
+	if (tm.tm_mon == 13) {
+	    tm.tm_mon = 1;
+	    tm.tm_year++;
+	}
+	next_time = mktime(&tm);
+    } else if ((NVRAM->buffer[0x1FF5] & 0x80) != 0 &&
+	       (NVRAM->buffer[0x1FF4] & 0x80) == 0 &&
+	       (NVRAM->buffer[0x1FF3] & 0x80) == 0 &&
+	       (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+	/* Repeat once a day */
+	next_time = 24 * 60 * 60 + mktime(&tm_now);
+    } else if ((NVRAM->buffer[0x1FF5] & 0x80) != 0 &&
+	       (NVRAM->buffer[0x1FF4] & 0x80) != 0 &&
+	       (NVRAM->buffer[0x1FF3] & 0x80) == 0 &&
+	       (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+	/* Repeat once an hour */
+	next_time = 60 * 60 + mktime(&tm_now);
+    } else if ((NVRAM->buffer[0x1FF5] & 0x80) != 0 &&
+	       (NVRAM->buffer[0x1FF4] & 0x80) != 0 &&
+	       (NVRAM->buffer[0x1FF3] & 0x80) != 0 &&
+	       (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+	/* Repeat once a minute */
+	next_time = 60 + mktime(&tm_now);
+    } else {
+	/* Repeat once a second */
+	next_time = 1 + mktime(&tm_now);
+    }
+    qemu_mod_timer(NVRAM->alrm_timer, next_time * 1000);
+    pic_set_irq(NVRAM->IRQ, 0);
+}
+
+
+static void get_alarm (m48t59_t *NVRAM, struct tm *tm)
+{
+    localtime_r(&NVRAM->alarm, tm);
+}
+
+static void set_alarm (m48t59_t *NVRAM, struct tm *tm)
+{
+    NVRAM->alarm = mktime(tm);
+    if (NVRAM->alrm_timer != NULL) {
+        qemu_del_timer(NVRAM->alrm_timer);
+	NVRAM->alrm_timer = NULL;
+    }
+    if (NVRAM->alarm - time(NULL) > 0)
+	qemu_mod_timer(NVRAM->alrm_timer, NVRAM->alarm * 1000);
+}
+
+/* Watchdog management */
+static void watchdog_cb (void *opaque)
+{
+    m48t59_t *NVRAM = opaque;
+
+    NVRAM->buffer[0x1FF0] |= 0x80;
+    if (NVRAM->buffer[0x1FF7] & 0x80) {
+	NVRAM->buffer[0x1FF7] = 0x00;
+	NVRAM->buffer[0x1FFC] &= ~0x40;
+	//	reset_CPU();
+    } else {
+	pic_set_irq(NVRAM->IRQ, 1);
+	pic_set_irq(NVRAM->IRQ, 0);
+    }
+}
+
+static void set_up_watchdog (m48t59_t *NVRAM, uint8_t value)
+{
+    uint64_t interval; /* in 1/16 seconds */
+
+    if (NVRAM->wd_timer != NULL) {
+        qemu_del_timer(NVRAM->wd_timer);
+	NVRAM->wd_timer = NULL;
+    }
+    NVRAM->buffer[0x1FF0] &= ~0x80;
+    if (value != 0) {
+	interval = (1 << (2 * (value & 0x03))) * ((value >> 2) & 0x1F);
+	qemu_mod_timer(NVRAM->wd_timer, ((uint64_t)time(NULL) * 1000) +
+		       ((interval * 1000) >> 4));
+    }
+}
+
+/* Direct access to NVRAM */
+void m48t59_write (void *opaque, uint32_t val)
+{
+    m48t59_t *NVRAM = opaque;
+    struct tm tm;
+    int tmp;
+
+    if (NVRAM->addr > 0x1FF8 && NVRAM->addr < 0x2000)
+	NVRAM_PRINTF("%s: 0x%08x => 0x%08x\n", __func__, NVRAM->addr, val);
+    switch (NVRAM->addr) {
+    case 0x1FF0:
+        /* flags register : read-only */
+        break;
+    case 0x1FF1:
+        /* unused */
+        break;
+    case 0x1FF2:
+        /* alarm seconds */
+	tmp = fromBCD(val & 0x7F);
+	if (tmp >= 0 && tmp <= 59) {
+	    get_alarm(NVRAM, &tm);
+	    tm.tm_sec = tmp;
+	    NVRAM->buffer[0x1FF2] = val;
+	    set_alarm(NVRAM, &tm);
+	}
+        break;
+    case 0x1FF3:
+        /* alarm minutes */
+	tmp = fromBCD(val & 0x7F);
+	if (tmp >= 0 && tmp <= 59) {
+	    get_alarm(NVRAM, &tm);
+	    tm.tm_min = tmp;
+	    NVRAM->buffer[0x1FF3] = val;
+	    set_alarm(NVRAM, &tm);
+	}
+        break;
+    case 0x1FF4:
+        /* alarm hours */
+	tmp = fromBCD(val & 0x3F);
+	if (tmp >= 0 && tmp <= 23) {
+	    get_alarm(NVRAM, &tm);
+	    tm.tm_hour = tmp;
+	    NVRAM->buffer[0x1FF4] = val;
+	    set_alarm(NVRAM, &tm);
+	}
+        break;
+    case 0x1FF5:
+        /* alarm date */
+	tmp = fromBCD(val & 0x1F);
+	if (tmp != 0) {
+	    get_alarm(NVRAM, &tm);
+	    tm.tm_mday = tmp;
+	    NVRAM->buffer[0x1FF5] = val;
+	    set_alarm(NVRAM, &tm);
+	}
+        break;
+    case 0x1FF6:
+        /* interrupts */
+	NVRAM->buffer[0x1FF6] = val;
+        break;
+    case 0x1FF7:
+        /* watchdog */
+	NVRAM->buffer[0x1FF7] = val;
+	set_up_watchdog(NVRAM, val);
+        break;
+    case 0x1FF8:
+        /* control */
+	NVRAM->buffer[0x1FF8] = (val & ~0xA0) | 0x90;
+        break;
+    case 0x1FF9:
+        /* seconds (BCD) */
+	tmp = fromBCD(val & 0x7F);
+	if (tmp >= 0 && tmp <= 59) {
+	    get_time(NVRAM, &tm);
+	    tm.tm_sec = tmp;
+	    set_time(NVRAM, &tm);
+	}
+	if ((val & 0x80) ^ (NVRAM->buffer[0x1FF9] & 0x80)) {
+	    if (val & 0x80) {
+		NVRAM->stop_time = time(NULL);
+	    } else {
+		NVRAM->time_offset += NVRAM->stop_time - time(NULL);
+		NVRAM->stop_time = 0;
+	    }
+	}
+	NVRAM->buffer[0x1FF9] = val & 0x80;
+        break;
+    case 0x1FFA:
+        /* minutes (BCD) */
+	tmp = fromBCD(val & 0x7F);
+	if (tmp >= 0 && tmp <= 59) {
+	    get_time(NVRAM, &tm);
+	    tm.tm_min = tmp;
+	    set_time(NVRAM, &tm);
+	}
+        break;
+    case 0x1FFB:
+        /* hours (BCD) */
+	tmp = fromBCD(val & 0x3F);
+	if (tmp >= 0 && tmp <= 23) {
+	    get_time(NVRAM, &tm);
+	    tm.tm_hour = tmp;
+	    set_time(NVRAM, &tm);
+	}
+        break;
+    case 0x1FFC:
+        /* day of the week / century */
+	tmp = fromBCD(val & 0x07);
+	get_time(NVRAM, &tm);
+	tm.tm_wday = tmp;
+	set_time(NVRAM, &tm);
+        NVRAM->buffer[0x1FFC] = val & 0x40;
+        break;
+    case 0x1FFD:
+        /* date */
+	tmp = fromBCD(val & 0x1F);
+	if (tmp != 0) {
+	    get_time(NVRAM, &tm);
+	    tm.tm_mday = tmp;
+	    set_time(NVRAM, &tm);
+	}
+        break;
+    case 0x1FFE:
+        /* month */
+	tmp = fromBCD(val & 0x1F);
+	if (tmp >= 1 && tmp <= 12) {
+	    get_time(NVRAM, &tm);
+	    tm.tm_mon = tmp - 1;
+	    set_time(NVRAM, &tm);
+	}
+        break;
+    case 0x1FFF:
+        /* year */
+	tmp = fromBCD(val);
+	if (tmp >= 0 && tmp <= 99) {
+	    get_time(NVRAM, &tm);
+	    tm.tm_year = fromBCD(val);
+	    set_time(NVRAM, &tm);
+	}
+        break;
+    default:
+        if (NVRAM->addr < 0x1FF0 ||
+	    (NVRAM->addr > 0x1FFF && NVRAM->addr < NVRAM->size)) {
+            NVRAM->buffer[NVRAM->addr] = val & 0xFF;
+	}
+        break;
+    }
+}
+
+uint32_t m48t59_read (void *opaque)
+{
+    m48t59_t *NVRAM = opaque;
+    struct tm tm;
+    uint32_t retval = 0xFF;
+
+    switch (NVRAM->addr) {
+    case 0x1FF0:
+        /* flags register */
+	goto do_read;
+    case 0x1FF1:
+        /* unused */
+	retval = 0;
+        break;
+    case 0x1FF2:
+        /* alarm seconds */
+	goto do_read;
+    case 0x1FF3:
+        /* alarm minutes */
+	goto do_read;
+    case 0x1FF4:
+        /* alarm hours */
+	goto do_read;
+    case 0x1FF5:
+        /* alarm date */
+	goto do_read;
+    case 0x1FF6:
+        /* interrupts */
+	goto do_read;
+    case 0x1FF7:
+	/* A read resets the watchdog */
+	set_up_watchdog(NVRAM, NVRAM->buffer[0x1FF7]);
+	goto do_read;
+    case 0x1FF8:
+        /* control */
+	goto do_read;
+    case 0x1FF9:
+        /* seconds (BCD) */
+        get_time(NVRAM, &tm);
+        retval = (NVRAM->buffer[0x1FF9] & 0x80) | toBCD(tm.tm_sec);
+        break;
+    case 0x1FFA:
+        /* minutes (BCD) */
+        get_time(NVRAM, &tm);
+        retval = toBCD(tm.tm_min);
+        break;
+    case 0x1FFB:
+        /* hours (BCD) */
+        get_time(NVRAM, &tm);
+        retval = toBCD(tm.tm_hour);
+        break;
+    case 0x1FFC:
+        /* day of the week / century */
+        get_time(NVRAM, &tm);
+        retval = NVRAM->buffer[0x1FFC] | tm.tm_wday;
+        break;
+    case 0x1FFD:
+        /* date */
+        get_time(NVRAM, &tm);
+        retval = toBCD(tm.tm_mday);
+        break;
+    case 0x1FFE:
+        /* month */
+        get_time(NVRAM, &tm);
+        retval = toBCD(tm.tm_mon + 1);
+        break;
+    case 0x1FFF:
+        /* year */
+        get_time(NVRAM, &tm);
+        retval = toBCD(tm.tm_year);
+        break;
+    default:
+        if (NVRAM->addr < 0x1FF0 ||
+	    (NVRAM->addr > 0x1FFF && NVRAM->addr < NVRAM->size)) {
+	do_read:
+            retval = NVRAM->buffer[NVRAM->addr];
+	}
+        break;
+    }
+    if (NVRAM->addr > 0x1FF9 && NVRAM->addr < 0x2000)
+	NVRAM_PRINTF("0x%08x <= 0x%08x\n", NVRAM->addr, retval);
+
+    return retval;
+}
+
+void m48t59_set_addr (void *opaque, uint32_t addr)
+{
+    m48t59_t *NVRAM = opaque;
+
+    NVRAM->addr = addr;
+}
+
+/* IO access to NVRAM */
+static void NVRAM_writeb (void *opaque, uint32_t addr, uint32_t val)
+{
+    m48t59_t *NVRAM = opaque;
+
+    addr -= NVRAM->io_base;
+    switch (addr) {
+    case 0:
+        NVRAM->addr &= ~0x00FF;
+        NVRAM->addr |= val;
+        break;
+    case 1:
+        NVRAM->addr &= ~0xFF00;
+        NVRAM->addr |= val << 8;
+        break;
+    case 3:
+        m48t59_write(NVRAM, val);
+        NVRAM->addr = 0x0000;
+        break;
+    default:
+        break;
+    }
+}
+
+static uint32_t NVRAM_readb (void *opaque, uint32_t addr)
+{
+    m48t59_t *NVRAM = opaque;
+
+    if (addr == NVRAM->io_base + 3)
+        return m48t59_read(NVRAM);
+
+    return 0xFF;
+}
+
+/* Initialisation routine */
+void *m48t59_init (int IRQ, uint32_t io_base, uint16_t size)
+{
+    m48t59_t *tmp;
+
+    tmp = realloc(NVRAMs, (nb_NVRAMs + 1) * sizeof(m48t59_t));
+    if (tmp == NULL)
+	return NULL;
+    NVRAMs = tmp;
+    tmp[nb_NVRAMs].buffer = malloc(size);
+    if (tmp[nb_NVRAMs].buffer == NULL)
+	return NULL;
+    memset(tmp[nb_NVRAMs].buffer, 0, size);
+    tmp[nb_NVRAMs].IRQ = IRQ;
+    tmp[nb_NVRAMs].size = size;
+    tmp[nb_NVRAMs].io_base = io_base;
+    tmp[nb_NVRAMs].addr = 0;
+    register_ioport_read(io_base, 0x04, 1, NVRAM_readb, &NVRAMs[nb_NVRAMs]);
+    register_ioport_write(io_base, 0x04, 1, NVRAM_writeb, &NVRAMs[nb_NVRAMs]);
+    tmp[nb_NVRAMs].alrm_timer = qemu_new_timer(vm_clock, &alarm_cb,
+					       &tmp[nb_NVRAMs]);
+    tmp[nb_NVRAMs].wd_timer = qemu_new_timer(vm_clock, &watchdog_cb,
+					     &tmp[nb_NVRAMs]);
+    return &NVRAMs[nb_NVRAMs++];
+}
+#if !defined (__M48T59_H__)
+#define __M48T59_H__
+
+void m48t59_write (void *opaque, uint32_t val);
+uint32_t m48t59_read (void *opaque);
+void m48t59_set_addr (void *opaque, uint32_t addr);
+void *m48t59_init (int IRQ, uint32_t io_base, uint16_t size);
+
+#endif /* !defined (__M48T59_H__) */
@@ -146,6 +146,10 @@ static void ne2000_update_irq(NE2000State *s)
 {
     int isr;
     isr = s->isr & s->imr;
+#if defined(DEBUG_NE2000)
+    printf("NE2000: Set IRQ line %d to %d (%02x %02x)\n",
+	   s->irq, isr ? 1 : 0, s->isr, s->imr);
+#endif
     if (isr)
         pic_set_irq(s->irq, 1);
     else
+/*
+ * QEMU generic PPC hardware System Emulator
+ * 
+ * Copyright (c) 2003-2004 Jocelyn Mayer
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include "vl.h"
+
+void ppc_prep_init (int ram_size, int vga_ram_size, int boot_device,
+		    DisplayState *ds, const char **fd_filename, int snapshot,
+		    const char *kernel_filename, const char *kernel_cmdline,
+		    const char *initrd_filename);
+
+void ppc_init (int ram_size, int vga_ram_size, int boot_device,
+	       DisplayState *ds, const char **fd_filename, int snapshot,
+	       const char *kernel_filename, const char *kernel_cmdline,
+	       const char *initrd_filename)
+{
+    /* For now, only PREP is supported */
+    return ppc_prep_init(ram_size, vga_ram_size, boot_device, ds, fd_filename,
+			 snapshot, kernel_filename, kernel_cmdline,
+			 initrd_filename);
+}
 /*
- * Hardware simulation for PPC target.
- * For now, this is only a 'minimal' collection of hacks needed to boot Linux.
+ * QEMU PPC PREP hardware System Emulator
+ * 
+ * Copyright (c) 2003-2004 Jocelyn Mayer
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
  */
-
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <fcntl.h>
+#include <getopt.h>
 #include <inttypes.h>
 #include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <signal.h>
 #include <time.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include <termios.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
  
 #include "cpu.h"
 #include "vl.h"
+#include "m48t59.h"
  
 //#define HARD_DEBUG_PPC_IO
-#define DEBUG_PPC_IO
+//#define DEBUG_PPC_IO
  
 extern int loglevel;
 extern FILE *logfile;
@@ -47,24 +74,68 @@ do {                                                     \
 #define PPC_IO_DPRINTF(fmt, args...) do { } while (0)
 #endif
  
-#if defined (USE_OPEN_FIRMWARE)
-#include "of.h"
-#else
-#define NVRAM_SIZE 0x2000
-#endif
+#define BIOS_FILENAME "ppc_rom.bin"
+#define LINUX_BOOT_FILENAME "linux_boot.bin"
+
+#define KERNEL_LOAD_ADDR    0x00000000
+#define KERNEL_STACK_ADDR   0x00400000
+#define INITRD_LOAD_ADDR    0x00800000
+
+int load_kernel(const char *filename, uint8_t *addr, 
+                uint8_t *real_addr)
+{
+    int fd, size;
+    int setup_sects;
+
+    fd = open(filename, O_RDONLY);
+    if (fd < 0)
+        return -1;
+
+    /* load 16 bit code */
+    if (read(fd, real_addr, 512) != 512)
+        goto fail;
+    setup_sects = real_addr[0x1F1];
+    if (!setup_sects)
+        setup_sects = 4;
+    if (read(fd, real_addr + 512, setup_sects * 512) != 
+        setup_sects * 512)
+        goto fail;
+    
+    /* load 32 bit code */
+    size = read(fd, addr, 16 * 1024 * 1024);
+    if (size < 0)
+        goto fail;
+    close(fd);
+    return size;
+ fail:
+    close(fd);
+    return -1;
+}
+
+static const int ide_iobase[2] = { 0x1f0, 0x170 };
+static const int ide_iobase2[2] = { 0x3f6, 0x376 };
+static const int ide_irq[2] = { 13, 13 };
+
+#define NE2000_NB_MAX 6
+
+static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
+static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
  
 /* IO ports emulation */
 #define PPC_IO_BASE 0x80000000
  
-static void PPC_io_writeb (uint32_t addr, uint32_t value)
+static void PPC_io_writeb (uint32_t addr, uint32_t value, uint32_t vaddr)
 {
     /* Don't polute serial port output */
+#if 0
     if ((addr < 0x800003F0 || addr > 0x80000400) &&
         (addr < 0x80000074 || addr > 0x80000077) &&
         (addr < 0x80000020 || addr > 0x80000021) &&
         (addr < 0x800000a0 || addr > 0x800000a1) &&
         (addr < 0x800001f0 || addr > 0x800001f7) &&
-        (addr < 0x80000170 || addr > 0x80000177)) {
+        (addr < 0x80000170 || addr > 0x80000177)) 
+#endif
+    {
         PPC_IO_DPRINTF("0x%08x => 0x%02x\n", addr - PPC_IO_BASE, value);
     }
     cpu_outb(NULL, addr - PPC_IO_BASE, value);
@@ -74,20 +145,23 @@ static uint32_t PPC_io_readb (uint32_t addr)
 {
     uint32_t ret = cpu_inb(NULL, addr - PPC_IO_BASE);
  
+#if 0
     if ((addr < 0x800003F0 || addr > 0x80000400) &&
         (addr < 0x80000074 || addr > 0x80000077) &&
         (addr < 0x80000020 || addr > 0x80000021) &&
         (addr < 0x800000a0 || addr > 0x800000a1) &&
         (addr < 0x800001f0 || addr > 0x800001f7) &&
         (addr < 0x80000170 || addr > 0x80000177) &&
-        (addr < 0x8000060 || addr > 0x8000064)) {
-//        PPC_IO_DPRINTF("0x%08x <= 0x%02x\n", addr - PPC_IO_BASE, ret);
+        (addr < 0x8000060 || addr > 0x8000064))
+#endif
+    {
+        PPC_IO_DPRINTF("0x%08x <= 0x%02x\n", addr - PPC_IO_BASE, ret);
     }
  
     return ret;
 }
  
-static void PPC_io_writew (uint32_t addr, uint32_t value)
+static void PPC_io_writew (uint32_t addr, uint32_t value, uint32_t vaddr)
 {
     if ((addr < 0x800001f0 || addr > 0x800001f7) &&
         (addr < 0x80000170 || addr > 0x80000177)) {
@@ -108,7 +182,7 @@ static uint32_t PPC_io_readw (uint32_t addr)
     return ret;
 }
  
-static void PPC_io_writel (uint32_t addr, uint32_t value)
+static void PPC_io_writel (uint32_t addr, uint32_t value, uint32_t vaddr)
 {
     PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, value);
     cpu_outl(NULL, addr - PPC_IO_BASE, value);
@@ -138,9 +212,9 @@ static CPUReadMemoryFunc *PPC_io_read[] = {
 uint32_t pic_intack_read(CPUState *env);
  
 /* Read-only register (?) */
-static void _PPC_ioB_write (uint32_t addr, uint32_t value)
+static void _PPC_ioB_write (uint32_t addr, uint32_t value, uint32_t vaddr)
 {
-    PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr, value);
+    //    printf("%s: 0x%08x => 0x%08x\n", __func__, addr, value);
 }
  
 static uint32_t _PPC_ioB_read (uint32_t addr)
@@ -149,7 +223,7 @@ static uint32_t _PPC_ioB_read (uint32_t addr)
  
     if (addr == 0xBFFFFFF0)
         retval = pic_intack_read(NULL);
-    PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr, retval);
+       //   printf("%s: 0x%08x <= %d\n", __func__, addr, retval);
  
     return retval;
 }
@@ -184,20 +258,23 @@ static CPUReadMemoryFunc *PPC_io3_read[] = {
 static uint8_t PREP_fake_io[2];
 static uint8_t NVRAM_lock;
  
-static void PREP_io_write (CPUState *env, uint32_t addr, uint32_t val)
+static void PREP_io_write (void *opaque, uint32_t addr, uint32_t val)
 {
+    PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, val);
     PREP_fake_io[addr - 0x0398] = val;
 }
  
-static uint32_t PREP_io_read (CPUState *env, uint32_t addr)
+static uint32_t PREP_io_read (void *opaque, uint32_t addr)
 {
+    PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, PREP_fake_io[addr - 0x0398]);
     return PREP_fake_io[addr - 0x0398];
 }
  
 static uint8_t syscontrol;
  
-static void PREP_io_800_writeb (CPUState *env, uint32_t addr, uint32_t val)
+static void PREP_io_800_writeb (void *opaque, uint32_t addr, uint32_t val)
 {
+    PPC_IO_DPRINTF("0x%08x => 0x%08x\n", addr - PPC_IO_BASE, val);
     switch (addr) {
     case 0x0092:
         /* Special port 92 */
@@ -242,7 +319,7 @@ static void PREP_io_800_writeb (CPUState *env, uint32_t addr, uint32_t val)
     }
 }
  
-static uint32_t PREP_io_800_readb (CPUState *env, uint32_t addr)
+static uint32_t PREP_io_800_readb (void *opaque, uint32_t addr)
 {
     uint32_t retval = 0xFF;
  
@@ -281,281 +358,171 @@ static uint32_t PREP_io_800_readb (CPUState *env, uint32_t addr)
     default:
         break;
     }
+    PPC_IO_DPRINTF("0x%08x <= 0x%08x\n", addr - PPC_IO_BASE, retval);
  
     return retval;
 }
  
-/* M48T59 NVRAM/RTC emulation */
-static uint8_t NVRAM[NVRAM_SIZE];
+#define NVRAM_SIZE        0x2000
+#define NVRAM_END         0x1FF0
+#define NVRAM_OSAREA_SIZE 512
+#define NVRAM_CONFSIZE    1024
  
-/* RTC */
-static time_t time_offset;
+static inline void NVRAM_set_byte (void *opaque, uint32_t addr, uint8_t value)
+{
+    m48t59_set_addr(opaque, addr);
+    m48t59_write(opaque, value);
+}
+
+static inline uint8_t NVRAM_get_byte (void *opaque, uint32_t addr)
+{
+    m48t59_set_addr(opaque, addr);
+    return m48t59_read(opaque);
+}
+
+static inline void NVRAM_set_word (void *opaque, uint32_t addr, uint16_t value)
+{
+    m48t59_set_addr(opaque, addr);
+    m48t59_write(opaque, value >> 8);
+    m48t59_set_addr(opaque, addr + 1);
+    m48t59_write(opaque, value & 0xFF);
+}
  
-time_t get_time (void)
+static inline uint16_t NVRAM_get_word (void *opaque, uint32_t addr)
 {
-    return time(NULL) + time_offset;
+    uint16_t tmp;
+
+    m48t59_set_addr(opaque, addr);
+    tmp = m48t59_read(opaque) << 8;
+    m48t59_set_addr(opaque, addr + 1);
+    tmp |= m48t59_read(opaque);
+
+    return tmp;
 }
  
-void set_time_offset (time_t new_time)
+static inline void NVRAM_set_lword (void *opaque, uint32_t addr,
+				    uint32_t value)
 {
-    time_t now = time(NULL);
+    m48t59_set_addr(opaque, addr);
+    m48t59_write(opaque, value >> 24);
+    m48t59_set_addr(opaque, addr + 1);
+    m48t59_write(opaque, (value >> 16) & 0xFF);
+    m48t59_set_addr(opaque, addr + 2);
+    m48t59_write(opaque, (value >> 8) & 0xFF);
+    m48t59_set_addr(opaque, addr + 3);
+    m48t59_write(opaque, value & 0xFF);
+}
  
-    time_offset = new_time - now;
+static inline uint32_t NVRAM_get_lword (void *opaque, uint32_t addr)
+{
+    uint32_t tmp;
+
+    m48t59_set_addr(opaque, addr);
+    tmp = m48t59_read(opaque) << 24;
+    m48t59_set_addr(opaque, addr + 1);
+    tmp |= m48t59_read(opaque) << 16;
+    m48t59_set_addr(opaque, addr + 2);
+    tmp |= m48t59_read(opaque) << 8;
+    m48t59_set_addr(opaque, addr + 3);
+    tmp |= m48t59_read(opaque);
+
+    return tmp;
 }
  
-static void NVRAM_init (void)
+static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
 {
+    uint16_t tmp;
+    uint16_t pd, pd1, pd2;
+
+    tmp = prev >> 8;
+    pd = prev ^ value;
+    pd1 = pd & 0x000F;
+    pd2 = ((pd >> 4) & 0x000F) ^ pd1;
+    tmp ^= (pd1 << 3) | (pd1 << 8);
+    tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
+
+    return tmp;
+}
+
+static void NVRAM_set_crc (void *opaque, uint32_t addr,
+			   uint32_t start, uint32_t count)
+{
+    uint32_t i;
+    uint16_t crc = 0xFFFF;
+    int odd = 0;
+
+    if (count & 1)
+	odd = 1;
+    count &= ~1;
+    for (i = 0; i != count; i++) {
+	crc = NVRAM_crc_update(crc, NVRAM_get_word(opaque, start + i));
+    }
+    if (odd) {
+	crc = NVRAM_crc_update(crc, NVRAM_get_byte(opaque, start + i) << 8);
+    }
+    NVRAM_set_word(opaque, addr, crc);
+}
+
+static void prep_NVRAM_init (void)
+{
+    void *opaque;
+
+    opaque = m48t59_init(8, 0x0074, NVRAM_SIZE);
     /* NVRAM header */
     /* 0x00: NVRAM size in kB */
-    NVRAM[0x00] = (NVRAM_SIZE >> 12) & 0xFF;
-    NVRAM[0x01] = (NVRAM_SIZE >> 10) & 0xFF;
+    NVRAM_set_word(opaque, 0x00, NVRAM_SIZE >> 10);
     /* 0x02: NVRAM version */
-    NVRAM[0x02] = 0x01;
+    NVRAM_set_byte(opaque, 0x02, 0x01);
     /* 0x03: NVRAM revision */
-    NVRAM[0x03] = 0x00;
-    /* 0x04: checksum 0 => OS area   */
-    /* 0x06: checksum of config area */
+    NVRAM_set_byte(opaque, 0x03, 0x01);
     /* 0x08: last OS */
-    NVRAM[0x08] = 0x00; /* Unknown */
+    NVRAM_set_byte(opaque, 0x08, 0x00); /* Unknown */
     /* 0x09: endian */
-    NVRAM[0x09] = 'B';
+    NVRAM_set_byte(opaque, 0x09, 'B');  /* Big-endian */
+    /* 0x0A: OSArea usage */
+    NVRAM_set_byte(opaque, 0x0A, 0x00); /* Empty */
     /* 0x0B: PM mode */
-    NVRAM[0x0B] = 0x00;
+    NVRAM_set_byte(opaque, 0x0B, 0x00); /* Normal */
     /* Restart block description record */
     /* 0x0C: restart block version */
-    NVRAM[0x0C] = 0x00;
-    NVRAM[0x0D] = 0x01;
+    NVRAM_set_word(opaque, 0x0C, 0x01);
     /* 0x0E: restart block revision */
-    NVRAM[0x0E] = 0x00;
-    NVRAM[0x0F] = 0x00;
-    /* 0x1C: checksum of restart block */
+    NVRAM_set_word(opaque, 0x0E, 0x01);
     /* 0x20: restart address */
-    NVRAM[0x20] = 0x00;
-    NVRAM[0x21] = 0x00;
-    NVRAM[0x22] = 0x00;
-    NVRAM[0x23] = 0x00;
+    NVRAM_set_lword(opaque, 0x20, 0x00);
     /* 0x24: save area address */
-    NVRAM[0x24] = 0x00;
-    NVRAM[0x25] = 0x00;
-    NVRAM[0x26] = 0x00;
-    NVRAM[0x27] = 0x00;
+    NVRAM_set_lword(opaque, 0x24, 0x00);
     /* 0x28: save area length */
-    NVRAM[0x28] = 0x00;
-    NVRAM[0x29] = 0x00;
-    NVRAM[0x2A] = 0x00;
-    NVRAM[0x2B] = 0x00;
+    NVRAM_set_lword(opaque, 0x28, 0x00);
+    /* 0x1C: checksum of restart block */
+    NVRAM_set_crc(opaque, 0x1C, 0x0C, 32);
+
     /* Security section */
     /* Set all to zero */
     /* 0xC4: pointer to global environment area */
-    NVRAM[0xC4] = 0x00;
-    NVRAM[0xC5] = 0x00;
-    NVRAM[0xC6] = 0x01;
-    NVRAM[0xC7] = 0x00;
+    NVRAM_set_lword(opaque, 0xC4, 0x0100);
     /* 0xC8: size of global environment area */
-    NVRAM[0xC8] = 0x00;
-    NVRAM[0xC9] = 0x00;
-    NVRAM[0xCA] = 0x07;
-    NVRAM[0xCB] = 0x00;
+    NVRAM_set_lword(opaque, 0xC8,
+		    NVRAM_END - NVRAM_OSAREA_SIZE - NVRAM_CONFSIZE - 0x0100);
     /* 0xD4: pointer to configuration area */
-    NVRAM[0xD4] = 0x00;
-    NVRAM[0xD5] = 0x00;
-    NVRAM[0xD6] = 0x08;
-    NVRAM[0xD7] = 0x00;
+    NVRAM_set_lword(opaque, 0xD4, NVRAM_END - NVRAM_CONFSIZE);
     /* 0xD8: size of configuration area */
-    NVRAM[0xD8] = 0x00;
-    NVRAM[0xD9] = 0x00;
-    NVRAM[0xDA] = 0x08;
-    NVRAM[0xDB] = 0x00;
+    NVRAM_set_lword(opaque, 0xD8, NVRAM_CONFSIZE);
     /* 0xE8: pointer to OS specific area */
-    NVRAM[0xE8] = 0x00;
-    NVRAM[0xE9] = 0x00;
-    NVRAM[0xEA] = 0x10;
-    NVRAM[0xEB] = 0x00;
+    NVRAM_set_lword(opaque, 0xE8,
+		    NVRAM_END - NVRAM_CONFSIZE - NVRAM_OSAREA_SIZE);
     /* 0xD8: size of OS specific area */
-    NVRAM[0xEC] = 0x00;
-    NVRAM[0xED] = 0x00;
-    NVRAM[0xEE] = 0x0F;
-    NVRAM[0xEF] = 0xF0;
-    /* CRC */
-    /* RTC init */
-    NVRAM[0x1FFC] = 0x50;
-}
-
-static uint16_t NVRAM_addr;
-
-/* Direct access to NVRAM */
-void NVRAM_write (CPUState *env, uint32_t addr, uint32_t val)
-{
-    switch (addr) {
-    case 0x1FF0:
-        /* flags register */
-        break;
-    case 0x1FF1:
-        /* unused */
-        break;
-    case 0x1FF2:
-        /* alarm seconds */
-        break;
-    case 0x1FF3:
-        /* alarm minutes */
-        break;
-    case 0x1FF4:
-        /* alarm hours */
-        break;
-    case 0x1FF5:
-        /* alarm date */
-        break;
-    case 0x1FF6:
-        /* interrupts */
-        break;
-    case 0x1FF7:
-        /* watchdog */
-        break;
-    case 0x1FF8:
-        /* control */
-        break;
-    case 0x1FF9:
-        /* seconds (BCD) */
-        break;
-    case 0x1FFA:
-        /* minutes (BCD) */
-        break;
-    case 0x1FFB:
-        /* hours (BCD) */
-        break;
-    case 0x1FFC:
-        /* day of the week / century */
-        NVRAM[0x1FFC] = val & 0x50;
-        break;
-    case 0x1FFD:
-        /* date */
-        break;
-    case 0x1FFE:
-        /* month */
-        break;
-    case 0x1FFF:
-        /* year */
-        break;
-    default:
-        if (addr < NVRAM_SIZE)
-            NVRAM[addr] = val & 0xFF;
-        break;
-    }
-}
-
-uint32_t NVRAM_read (CPUState *env, uint32_t addr)
-{
-    struct tm tm;
-    time_t t;
-    uint32_t retval = 0xFF;
-
-    switch (addr) {
-    case 0x1FF0:
-        /* flags register */
-        break;
-    case 0x1FF1:
-        /* unused */
-        break;
-    case 0x1FF2:
-        /* alarm seconds */
-        break;
-    case 0x1FF3:
-        /* alarm minutes */
-        break;
-    case 0x1FF4:
-        /* alarm hours */
-        break;
-    case 0x1FF5:
-        /* alarm date */
-        break;
-    case 0x1FF6:
-        /* interrupts */
-        break;
-    case 0x1FF7:
-        /* watchdog */
-        break;
-    case 0x1FF8:
-        /* control */
-        break;
-    case 0x1FF9:
-        /* seconds (BCD) */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = ((tm.tm_sec / 10) << 4) | (tm.tm_sec % 10);
-//            printf("return seconds=%d\n", tm.tm_sec);
-        break;
-    case 0x1FFA:
-        /* minutes (BCD) */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = ((tm.tm_min / 10) << 4) | (tm.tm_min % 10);
-        break;
-    case 0x1FFB:
-        /* hours (BCD) */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = ((tm.tm_hour / 10) << 4) | (tm.tm_hour % 10);
-        break;
-    case 0x1FFC:
-        /* day of the week / century */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = (NVRAM[0x1FFC] & 0x50) | tm.tm_wday;
-        break;
-    case 0x1FFD:
-        /* date */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = ((tm.tm_mday / 10) << 4) | (tm.tm_mday % 10);
-        break;
-    case 0x1FFE:
-        /* month */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = ((tm.tm_mon / 10) << 4) | (tm.tm_mon % 10);
-        break;
-    case 0x1FFF:
-        /* year */
-        t = get_time();
-        localtime_r(&t, &tm);
-        retval = ((tm.tm_year / 10) << 4) | (tm.tm_year % 10);
-        break;
-    default:
-        if (NVRAM_addr < NVRAM_SIZE)
-            retval = NVRAM[NVRAM_addr];
-        break;
-    }
+    NVRAM_set_lword(opaque, 0xEC, NVRAM_OSAREA_SIZE);
  
-    return retval;
-}
-
-/* IO access to NVRAM */
-static void NVRAM_writeb (CPUState *env, uint32_t addr, uint32_t val)
-{
-    switch (addr) {
-    case 0x74:
-        NVRAM_addr &= ~0x00FF;
-        NVRAM_addr |= val;
-        break;
-    case 0x75:
-        NVRAM_addr &= ~0xFF00;
-        NVRAM_addr |= val << 8;
-        break;
-    case 0x77:
-        NVRAM_write(env, NVRAM_addr, val);
-        NVRAM_addr = 0x0000;
-        break;
-    default:
-        break;
-    }
-}
-
-static uint32_t NVRAM_readb (CPUState *env, uint32_t addr)
-{
-    if (addr == 0x77)
-        return NVRAM_read(env, NVRAM_addr);
+    /* Configuration area */
+    /* RTC init */
+    //    NVRAM_set_lword(opaque, 0x1FFC, 0x50);
  
-    return 0xFF;
+    /* 0x04: checksum 0 => OS area   */
+    NVRAM_set_crc(opaque, 0x04, 0x00,
+		  NVRAM_END - NVRAM_CONFSIZE - NVRAM_OSAREA_SIZE);
+    /* 0x06: checksum of config area */
+    NVRAM_set_crc(opaque, 0x06, NVRAM_END - NVRAM_CONFSIZE, NVRAM_CONFSIZE);
 }
  
 int load_initrd (const char *filename, uint8_t *addr)
@@ -591,7 +558,7 @@ static void put_long (void *addr, uint32_t l)
 /* bootloader infos are in the form:
  * uint32_t TAG
  * uint32_t TAG_size (from TAG to next TAG).
- * datas
+ * data
  * ....
  */
 #if !defined (USE_OPEN_FIRMWARE)
@@ -621,9 +588,10 @@ static boot_dev_t boot_devs[] =
 {
     { "/dev/fd0", 2, 0, },
     { "/dev/fd1", 2, 1, },
-    { "/dev/hda1", 3, 1, },
+    { "/dev/hda", 3, 1, },
 //    { "/dev/ide/host0/bus0/target0/lun0/part1", 3, 1, },
-    { "/dev/hdc", 22, 0, },
+//    { "/dev/hdc", 22, 0, },
+    { "/dev/hdc", 22, 1, },
     { "/dev/ram0 init=/linuxrc", 1, 0, },
 };
  
@@ -671,7 +639,7 @@ static void VGA_printf (uint8_t *s)
     uint16_t arg, digit, nibble;
     uint8_t c;
  
-    arg_ptr = (uint16_t *)(&s);
+    arg_ptr = (uint16_t *)((void *)&s);
     in_format = 0;
     format_width = 0;
     while ((c = *s) != '\0') {
@@ -690,9 +658,9 @@ static void VGA_printf (uint8_t *s)
                 for (i = 0; i < format_width; i++) {
                     nibble = (arg >> (4 * digit)) & 0x000f;
                     if (nibble <= 9)
-                        PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + '0');
+                        PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + '0', 0);
                     else
-                        PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + 'A');
+                        PPC_io_writeb(PPC_IO_BASE + 0x500, nibble + 'A', 0);
                     digit--;
                 }
                 in_format = 0;
@@ -701,7 +669,7 @@ static void VGA_printf (uint8_t *s)
             //  in_format = 0;
             //  }
         } else {
-            PPC_io_writeb(PPC_IO_BASE + 0x500, c);
+            PPC_io_writeb(PPC_IO_BASE + 0x500, c, 0);
         }
         s++;
     }
@@ -711,48 +679,46 @@ static void VGA_init (void)
 {
     /* Basic VGA init, inspired by plex86 VGAbios */
     printf("Init VGA...\n");
+#if 1
     /* switch to color mode and enable CPU access 480 lines */
-    PPC_io_writeb(PPC_IO_BASE + 0x3C2, 0xC3);
+    PPC_io_writeb(PPC_IO_BASE + 0x3C2, 0xC3, 0);
     /* more than 64k 3C4/04 */
-    PPC_io_writeb(PPC_IO_BASE + 0x3C4, 0x04);
-    PPC_io_writeb(PPC_IO_BASE + 0x3C5, 0x02);
+    PPC_io_writeb(PPC_IO_BASE + 0x3C4, 0x04, 0);
+    PPC_io_writeb(PPC_IO_BASE + 0x3C5, 0x02, 0);
+#endif
     VGA_printf("PPC VGA BIOS...\n");
 }
  
-void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
+extern CPUPPCState *global_env;
+
+void PPC_init_hw (/*CPUPPCState *env,*/ uint32_t mem_size,
                   uint32_t kernel_addr, uint32_t kernel_size,
-                  uint32_t stack_addr, int boot_device)
+                  uint32_t stack_addr, int boot_device,
+		  const unsigned char *initrd_file)
 {
+    CPUPPCState *env = global_env;
     char *p;
 #if !defined (USE_OPEN_FIRMWARE)
     char *tmp;
     uint32_t tmpi[2];
 #endif
-    int PPC_io_memory;
-    
+
+    printf("RAM size: %u 0x%08x (%u)\n", mem_size, mem_size, mem_size >> 20);
 #if defined (USE_OPEN_FIRMWARE)
     setup_memory(env, mem_size);
 #endif
-    /* Register 64 kB of IO space */
-    PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write);
-    cpu_register_physical_memory(0x80000000, 0x10000, PPC_io_memory);
-    /* Register fake IO ports for PREP */
-    register_ioport_read(0x398, 2, PREP_io_read, 1);
-    register_ioport_write(0x398, 2, PREP_io_write, 1);
-    /* System control ports */
-    register_ioport_write(0x0092, 0x1, PREP_io_800_writeb, 1);
-    register_ioport_read(0x0800, 0x52, PREP_io_800_readb, 1);
-    register_ioport_write(0x0800, 0x52, PREP_io_800_writeb, 1);
-    /* PCI intack location */
-    PPC_io_memory = cpu_register_io_memory(0, PPC_ioB_read, PPC_ioB_write);
-    cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
-    /* NVRAM ports */
-    NVRAM_init();
-    register_ioport_read(0x0074, 0x04, NVRAM_readb, 1);
-    register_ioport_write(0x0074, 0x04, NVRAM_writeb, 1);
  
     /* Fake bootloader */
-    env->nip = kernel_addr + (3 * sizeof(uint32_t));
+    {
+#if 1
+        uint32_t offset = 
+            *((uint32_t *)((uint32_t)phys_ram_base + kernel_addr));
+#else
+        uint32_t offset = 12;
+#endif
+        env->nip = kernel_addr + offset;
+        printf("Start address: 0x%08x\n", env->nip);
+    }
     /* Set up msr according to PREP specification */
     msr_ee = 0;
     msr_fp = 1;
@@ -786,11 +752,10 @@ void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
     env->gpr[1] -= 32;
     /* Pretend there are no residual data */
     env->gpr[3] = 0;
-#if 1
-    {
+    if (initrd_file != NULL) {
         int size;
-        env->gpr[4] = 0x00800000;
-        size = load_initrd("initrd",
+        env->gpr[4] = (kernel_addr + kernel_size + 4095) & ~4095;
+        size = load_initrd(initrd_file,
                            (void *)((uint32_t)phys_ram_base + env->gpr[4]));
         if (size < 0) {
             /* No initrd */
@@ -799,11 +764,11 @@ void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
             env->gpr[5] = size;
             boot_device = 'e';
         }
-        printf("Initrd loaded at 0x%08x (%d)\n", env->gpr[4], env->gpr[5]);
+        printf("Initrd loaded at 0x%08x (%d) (0x%08x 0x%08x)\n",
+	       env->gpr[4], env->gpr[5], kernel_addr, kernel_size);
+    } else {
+	env->gpr[4] = env->gpr[5] = 0;
     }
-#else
-    env->gpr[4] = env->gpr[5] = 0;
-#endif
     /* We have to put bootinfos after the BSS
      * The BSS starts after the kernel end.
      */
@@ -825,11 +790,11 @@ void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
     sprintf(p + 0x1000, "console=ttyS0,9600 root=%02x%02x mem=%dM",
             boot_devs[boot_device - 'a'].major,
             boot_devs[boot_device - 'a'].minor,
-            phys_ram_size >> 20);
+            mem_size >> 20);
 #else
-    sprintf(p + 0x1000, "console=ttyS0,9600 console=tty0 root=%s mem=%dM load_ramdisk=1",
+    sprintf(p + 0x1000, "console=ttyS0,9600 console=tty0 root=%s mem=%dM",
             boot_devs[boot_device - 'a'].name,
-            phys_ram_size >> 20);
+            mem_size >> 20);
 #endif
     env->gpr[6] = (uint32_t)p + 0x1000 - (uint32_t)phys_ram_base;
     env->gpr[7] = env->gpr[6] + strlen(p + 0x1000);
@@ -847,10 +812,10 @@ void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
                          (void *)(env->gpr[6] + (uint32_t)phys_ram_base));
     /* BI_MEM_SIZE */
     tmp = (void *)tmpi;
-    tmp[0] = (phys_ram_size >> 24) & 0xFF;
-    tmp[1] = (phys_ram_size >> 16) & 0xFF;
-    tmp[2] = (phys_ram_size >> 8) & 0xFF;
-    tmp[3] = phys_ram_size & 0xFF;
+    tmp[0] = (mem_size >> 24) & 0xFF;
+    tmp[1] = (mem_size >> 16) & 0xFF;
+    tmp[2] = (mem_size >> 8) & 0xFF;
+    tmp[3] = mem_size & 0xFF;
     p = set_bootinfo_tag(p, 0x1017, 4, tmpi);
     /* BI_INITRD */
     tmp[0] = (env->gpr[4] >> 24) & 0xFF;
@@ -862,6 +827,7 @@ void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
     tmp[6] = (env->gpr[5] >> 8) & 0xFF;
     tmp[7] = env->gpr[5] & 0xFF;
     p = set_bootinfo_tag(p, 0x1014, 8, tmpi);
+    env->gpr[4] = env->gpr[5] = 0;
     /* BI_LAST */
     p = set_bootinfo_tag(p, 0x1011, 0, 0);
 #else
@@ -915,21 +881,127 @@ void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
     /* Set up RTAS service */
     RTAS_init();
     /* Command line: let's put it just over the stack */
+#if 0
+#if 0
+    p = (void *)(((uint32_t)phys_ram_base + kernel_addr +
+                  kernel_size + (1 << 20) - 1) & ~((1 << 20) - 1));
+#else
+    p = (void *)((uint32_t)phys_ram_base + kernel_addr + 0x400000);
+#endif
 #if 1
     sprintf(p, "console=ttyS0,9600 root=%02x%02x mem=%dM",
             boot_devs[boot_device - 'a'].major,
             boot_devs[boot_device - 'a'].minor,
-            phys_ram_size >> 20);
+            mem_size >> 20);
 #else
     sprintf(p, "console=ttyS0,9600 root=%s mem=%dM ne2000=0x300,9",
             boot_devs[boot_device - 'a'].name,
-            phys_ram_size >> 20);
+            mem_size >> 20);
 #endif
     OF_register_bootargs(p);
 #endif
+#endif
 }
  
 void PPC_end_init (void)
 {
     VGA_init();
 }
+
+/* PC hardware initialisation */
+void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device,
+		   DisplayState *ds, const char **fd_filename, int snapshot,
+		   const char *kernel_filename, const char *kernel_cmdline,
+		   const char *initrd_filename)
+{
+    char buf[1024];
+    int PPC_io_memory;
+    int ret, linux_boot, initrd_size, i, nb_nics1, fd;
+
+    linux_boot = (kernel_filename != NULL);
+
+    /* allocate RAM */
+    cpu_register_physical_memory(0, ram_size, 0);
+
+    if (linux_boot) {
+        /* now we can load the kernel */
+        ret = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
+        if (ret < 0) {
+            fprintf(stderr, "qemu: could not load kernel '%s'\n", 
+                    kernel_filename);
+            exit(1);
+        }
+        /* load initrd */
+        initrd_size = 0;
+#if 0
+        if (initrd_filename) {
+            initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
+            if (initrd_size < 0) {
+                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", 
+                        initrd_filename);
+                exit(1);
+            }
+        }
+#endif
+        PPC_init_hw(/*env,*/ ram_size, KERNEL_LOAD_ADDR, ret,
+                    KERNEL_STACK_ADDR, boot_device, initrd_filename);
+    } else {
+	/* allocate ROM */
+	//        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
+	snprintf(buf, sizeof(buf), "%s", BIOS_FILENAME);
+	printf("load BIOS at %p\n", phys_ram_base + 0x000f0000);
+	ret = load_image(buf, phys_ram_base + 0x000f0000);
+	if (ret != 0x10000) {
+	    fprintf(stderr, "qemu: could not load PPC bios '%s' (%d)\n%m\n",
+		    buf, ret);
+	    exit(1);
+	}
+    }
+
+    /* init basic PC hardware */
+    vga_initialize(ds, phys_ram_base + ram_size, ram_size, 
+                   vga_ram_size);
+    rtc_init(0x70, 8);
+    pic_init();
+    //    pit_init(0x40, 0);
+
+    fd = serial_open_device();
+    serial_init(0x3f8, 4, fd);
+#if 1
+    nb_nics1 = nb_nics;
+    if (nb_nics1 > NE2000_NB_MAX)
+        nb_nics1 = NE2000_NB_MAX;
+    for(i = 0; i < nb_nics1; i++) {
+        ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
+    }
+#endif
+
+    for(i = 0; i < 2; i++) {
+        ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
+                 bs_table[2 * i], bs_table[2 * i + 1]);
+    }
+    kbd_init();
+    AUD_init();
+    DMA_init();
+    //    SB16_init();
+
+    fdctrl_init(6, 2, 0, 0x3f0, fd_table);
+
+    /* Register 64 kB of IO space */
+    PPC_io_memory = cpu_register_io_memory(0, PPC_io_read, PPC_io_write);
+    cpu_register_physical_memory(0x80000000, 0x10000, PPC_io_memory);
+    /* Register fake IO ports for PREP */
+    register_ioport_read(0x398, 2, 1, &PREP_io_read, NULL);
+    register_ioport_write(0x398, 2, 1, &PREP_io_write, NULL);
+    /* System control ports */
+    register_ioport_write(0x0092, 0x1, 1, &PREP_io_800_writeb, NULL);
+    register_ioport_read(0x0800, 0x52, 1, &PREP_io_800_readb, NULL);
+    register_ioport_write(0x0800, 0x52, 1, &PREP_io_800_writeb, NULL);
+    /* PCI intack location (0xfef00000 / 0xbffffff0) */
+    PPC_io_memory = cpu_register_io_memory(0, PPC_ioB_read, PPC_ioB_write);
+    cpu_register_physical_memory(0xBFFFFFF0, 0x4, PPC_io_memory);
+    //    cpu_register_physical_memory(0xFEF00000, 0x4, PPC_io_memory);
+    prep_NVRAM_init();
+
+    PPC_end_init();
+}
@@ -94,15 +94,15 @@ int cpu_inl(CPUState *env, int addr)
     return 0;
 }
  
-#ifdef TARGET_I386
-/***********************************************************/
-/* CPUX86 core interface */
-
-int cpu_x86_get_pic_interrupt(CPUState *env)
+int cpu_get_pic_interrupt(CPUState *env)
 {
     return -1;
 }
  
+#ifdef TARGET_I386
+/***********************************************************/
+/* CPUX86 core interface */
+
 static void write_dt(void *ptr, unsigned long addr, unsigned long limit, 
                      int flags)
 {
@@ -441,7 +441,6 @@ void cpu_loop (CPUSPARCState *env)
 #endif
  
 #ifdef TARGET_PPC
-
 void cpu_loop(CPUPPCState *env)
 {
     target_siginfo_t info;
@@ -769,6 +768,8 @@ void cpu_loop(CPUPPCState *env)
         case EXCP_INTERRUPT:
             /* Don't know why this should ever happen... */
             break;
+	case EXCP_DEBUG:
+	    break;
         default:
             fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", 
                     trapnr);
@@ -2475,6 +2475,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
         }
 #endif
         break;
+#ifdef TARGET_NR_getdents64
     case TARGET_NR_getdents64:
         {
             struct dirent64 *dirp = (void *)arg2;
@@ -2498,6 +2499,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
             }
         }
         break;
+#endif /* TARGET_NR_getdents64 */
     case TARGET_NR__newselect:
         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4, 
                         (void *)arg5);
@@ -530,6 +530,47 @@ typedef struct MonitorDef {
     int (*get_value)(struct MonitorDef *md);
 } MonitorDef;
  
+#if defined(TARGET_PPC)
+static int monitor_get_ccr (struct MonitorDef *md)
+{
+    unsigned int u;
+    int i;
+
+    u = 0;
+    for (i = 0; i < 8; i++)
+	u |= cpu_single_env->crf[i] << (32 - (4 * i));
+
+    return u;
+}
+
+static int monitor_get_msr (struct MonitorDef *md)
+{
+    return (cpu_single_env->msr[MSR_POW] << MSR_POW) |
+        (cpu_single_env->msr[MSR_ILE] << MSR_ILE) |
+        (cpu_single_env->msr[MSR_EE] << MSR_EE) |
+        (cpu_single_env->msr[MSR_PR] << MSR_PR) |
+        (cpu_single_env->msr[MSR_FP] << MSR_FP) |
+        (cpu_single_env->msr[MSR_ME] << MSR_ME) |
+        (cpu_single_env->msr[MSR_FE0] << MSR_FE0) |
+        (cpu_single_env->msr[MSR_SE] << MSR_SE) |
+        (cpu_single_env->msr[MSR_BE] << MSR_BE) |
+        (cpu_single_env->msr[MSR_FE1] << MSR_FE1) |
+        (cpu_single_env->msr[MSR_IP] << MSR_IP) |
+        (cpu_single_env->msr[MSR_IR] << MSR_IR) |
+        (cpu_single_env->msr[MSR_DR] << MSR_DR) |
+        (cpu_single_env->msr[MSR_RI] << MSR_RI) |
+        (cpu_single_env->msr[MSR_LE] << MSR_LE);
+}
+
+static int monitor_get_xer (struct MonitorDef *md)
+{
+    return (cpu_single_env->xer[XER_SO] << XER_SO) |
+        (cpu_single_env->xer[XER_OV] << XER_OV) |
+        (cpu_single_env->xer[XER_CA] << XER_CA) |
+        (cpu_single_env->xer[XER_BC] << XER_BC);
+}
+#endif
+
 static MonitorDef monitor_defs[] = {
 #ifdef TARGET_I386
     { "eax", offsetof(CPUState, regs[0]) },
@@ -542,6 +583,65 @@ static MonitorDef monitor_defs[] = {
     { "esi", offsetof(CPUState, regs[7]) },
     { "eflags", offsetof(CPUState, eflags) },
     { "eip|pc", offsetof(CPUState, eip) },
+#elif defined(TARGET_PPC)
+    { "r0", offsetof(CPUState, gpr[0]) },
+    { "r1", offsetof(CPUState, gpr[1]) },
+    { "r2", offsetof(CPUState, gpr[2]) },
+    { "r3", offsetof(CPUState, gpr[3]) },
+    { "r4", offsetof(CPUState, gpr[4]) },
+    { "r5", offsetof(CPUState, gpr[5]) },
+    { "r6", offsetof(CPUState, gpr[6]) },
+    { "r7", offsetof(CPUState, gpr[7]) },
+    { "r8", offsetof(CPUState, gpr[8]) },
+    { "r9", offsetof(CPUState, gpr[9]) },
+    { "r10", offsetof(CPUState, gpr[10]) },
+    { "r11", offsetof(CPUState, gpr[11]) },
+    { "r12", offsetof(CPUState, gpr[12]) },
+    { "r13", offsetof(CPUState, gpr[13]) },
+    { "r14", offsetof(CPUState, gpr[14]) },
+    { "r15", offsetof(CPUState, gpr[15]) },
+    { "r16", offsetof(CPUState, gpr[16]) },
+    { "r17", offsetof(CPUState, gpr[17]) },
+    { "r18", offsetof(CPUState, gpr[18]) },
+    { "r19", offsetof(CPUState, gpr[19]) },
+    { "r20", offsetof(CPUState, gpr[20]) },
+    { "r21", offsetof(CPUState, gpr[21]) },
+    { "r22", offsetof(CPUState, gpr[22]) },
+    { "r23", offsetof(CPUState, gpr[23]) },
+    { "r24", offsetof(CPUState, gpr[24]) },
+    { "r25", offsetof(CPUState, gpr[25]) },
+    { "r26", offsetof(CPUState, gpr[26]) },
+    { "r27", offsetof(CPUState, gpr[27]) },
+    { "r28", offsetof(CPUState, gpr[28]) },
+    { "r29", offsetof(CPUState, gpr[29]) },
+    { "r30", offsetof(CPUState, gpr[30]) },
+    { "r31", offsetof(CPUState, gpr[31]) },
+    { "lr", offsetof(CPUState, lr) },
+    { "ctr", offsetof(CPUState, ctr) },
+    { "decr", offsetof(CPUState, decr) },
+    { "ccr", 0, &monitor_get_ccr, },
+    { "msr", 0, &monitor_get_msr, },
+    { "xer", 0, &monitor_get_xer, },
+    { "tbu", offsetof(CPUState, tb[0]) },
+    { "tbl", offsetof(CPUState, tb[1]) },
+    { "sdr1", offsetof(CPUState, sdr1) },
+    { "sr0", offsetof(CPUState, sr[0]) },
+    { "sr1", offsetof(CPUState, sr[1]) },
+    { "sr2", offsetof(CPUState, sr[2]) },
+    { "sr3", offsetof(CPUState, sr[3]) },
+    { "sr4", offsetof(CPUState, sr[4]) },
+    { "sr5", offsetof(CPUState, sr[5]) },
+    { "sr6", offsetof(CPUState, sr[6]) },
+    { "sr7", offsetof(CPUState, sr[7]) },
+    { "sr8", offsetof(CPUState, sr[8]) },
+    { "sr9", offsetof(CPUState, sr[9]) },
+    { "sr10", offsetof(CPUState, sr[10]) },
+    { "sr11", offsetof(CPUState, sr[11]) },
+    { "sr12", offsetof(CPUState, sr[12]) },
+    { "sr13", offsetof(CPUState, sr[13]) },
+    { "sr14", offsetof(CPUState, sr[14]) },
+    { "sr15", offsetof(CPUState, sr[15]) },
+    /* Too lazy to put BATs and SPRs ... */
 #endif
     { NULL },
 };
@@ -20,9 +20,6 @@
 #if !defined (__CPU_PPC_H__)
 #define __CPU_PPC_H__
  
-#include <endian.h>
-#include <asm/byteorder.h>
-
 #define TARGET_LONG_BITS 32
  
 #include "cpu-defs.h"
@@ -157,14 +154,26 @@ typedef struct CPUPPCState {
     int error_code;
     int access_type; /* when a memory exception occurs, the access
                         type is stored here */
+#if 0 /* TODO */
+    uint32_t pending_exceptions; /* For external & decr exception,
+				  * that can be delayed */
+#else
     uint32_t exceptions; /* exception queue */
-    uint32_t errors[16];
+    uint32_t errors[32];
+#endif
     int user_mode_only; /* user mode only simulation */
     struct TranslationBlock *current_tb; /* currently executing TB */
     /* soft mmu support */
-    /* 0 = kernel, 1 = user */
+    /* 0 = kernel, 1 = user (may have 2 = kernel code, 3 = user code ?) */
     CPUTLBEntry tlb_read[2][CPU_TLB_SIZE];
     CPUTLBEntry tlb_write[2][CPU_TLB_SIZE];
+
+    /* ice debug support */
+    uint32_t breakpoints[MAX_BREAKPOINTS];
+    int nb_breakpoints;
+    int brkstate;
+    int singlestep_enabled;
+
     /* user data */
     void *opaque;
 } CPUPPCState;
@@ -179,14 +188,21 @@ struct siginfo;
 int cpu_ppc_signal_handler(int host_signum, struct siginfo *info, 
                            void *puc);
  
-void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags);
+void do_interrupt (CPUPPCState *env);
 void cpu_loop_exit(void);
+
+void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags);
 void dump_stack (CPUPPCState *env);
-uint32_t _load_xer (void);
-void _store_xer (uint32_t value);
-uint32_t _load_msr (void);
-void _store_msr (uint32_t value);
-void do_interrupt (CPUPPCState *env);
+
+uint32_t _load_xer (CPUPPCState *env);
+void _store_xer (CPUPPCState *env, uint32_t value);
+uint32_t _load_msr (CPUPPCState *env);
+void _store_msr (CPUPPCState *env, uint32_t value);
+
+void PPC_init_hw (uint32_t mem_size,
+                  uint32_t kernel_addr, uint32_t kernel_size,
+                  uint32_t stack_addr, int boot_device,
+		  const unsigned char *initrd_file);
  
 #define TARGET_PAGE_BITS 12
 #include "cpu-all.h"
@@ -277,14 +293,6 @@ void do_interrupt (CPUPPCState *env);
 #define TARGET_PAGE_BITS 12
 #include "cpu-all.h"
  
-CPUPPCState *cpu_ppc_init(void);
-int cpu_ppc_exec(CPUPPCState *s);
-void cpu_ppc_close(CPUPPCState *s);
-void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags);
-void PPC_init_hw (CPUPPCState *env, uint32_t mem_size,
-                  uint32_t kernel_addr, uint32_t kernel_size,
-                  uint32_t stack_addr, int boot_device);
-
 /* Memory access type :
  * may be needed for precise access rights control and precise exceptions.
  */
@@ -351,12 +359,14 @@ enum {
     /* flags for EXCP_DSI */
     EXCP_DSI_DIRECT    = 0x10,
     EXCP_DSI_STORE     = 0x20,
-    EXCP_ECXW          = 0x40,
+    EXCP_DSI_ECXW      = 0x40,
     /* Exception subtypes for EXCP_ISI                              */
     EXCP_ISI_TRANSLATE = 0x01,  /* Code address can't be translated */
     EXCP_ISI_NOEXEC    = 0x02,  /* Try to fetch from a data segment */
     EXCP_ISI_GUARD     = 0x03,  /* Fetch from guarded memory        */
     EXCP_ISI_PROT      = 0x04,  /* Memory protection violation      */
+    EXCP_ISI_DIRECT    = 0x05,  /* Trying to fetch from             *
+				 * a direct store segment           */
     /* Exception subtypes for EXCP_ALIGN                            */
     EXCP_ALIGN_FP      = 0x01,  /* FP alignment exception           */
     EXCP_ALIGN_LST     = 0x02,  /* Unaligned mult/extern load/store */
@@ -36,7 +36,11 @@ register uint32_t T2 asm(AREG3);
 #define FTS1 ((float)env->ft1)
 #define FTS2 ((float)env->ft2)
  
+#if defined (DEBUG_OP)
+#define RETURN() __asm__ __volatile__("nop");
+#else
 #define RETURN() __asm__ __volatile__("");
+#endif
  
 #include "cpu.h"
 #include "exec-all.h"
@@ -149,6 +153,7 @@ void do_icbi (void);
 void do_tlbia (void);
 void do_tlbie (void);
  
+void dump_state (void);
 void dump_rfi (void);
 void dump_store_sr (int srnum);
 void dump_store_ibat (int ul, int nr);
@@ -21,6 +21,7 @@
  
 #include "exec.h"
 #if defined (USE_OPEN_FIRMWARE)
+#include <time.h>
 #include "of.h"
 #endif
  
@@ -28,7 +29,7 @@
 //#define DEBUG_BATS
 //#define DEBUG_EXCEPTIONS
  
-extern FILE *logfile, *stderr;
+extern FILE *logfile, *stdout, *stderr;
 void exit (int);
 void abort (void);
  
@@ -74,6 +75,9 @@ int check_exception_state (CPUState *env)
  
 /*****************************************************************************/
 /* PPC MMU emulation */
+int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
+                              int is_user, int is_softmmu);
+
 /* Perform BAT hit & translation */
 static int get_bat (CPUState *env, uint32_t *real, int *prot,
                     uint32_t virtual, int rw, int type)
@@ -88,8 +92,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
         fprintf(logfile, "%s: %cBAT v 0x%08x\n", __func__,
                type == ACCESS_CODE ? 'I' : 'D', virtual);
     }
-    printf("%s: %cBAT v 0x%08x\n", __func__,
-           type == ACCESS_CODE ? 'I' : 'D', virtual);
 #endif
     switch (type) {
     case ACCESS_CODE:
@@ -106,8 +108,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
         fprintf(logfile, "%s...: %cBAT v 0x%08x\n", __func__,
                type == ACCESS_CODE ? 'I' : 'D', virtual);
     }
-    printf("%s...: %cBAT v 0x%08x\n", __func__,
-           type == ACCESS_CODE ? 'I' : 'D', virtual);
 #endif
     base = virtual & 0xFFFC0000;
     for (i = 0; i < 4; i++) {
@@ -121,10 +121,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
             fprintf(logfile, "%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n",
                     __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
                     *BATu, *BATl);
-        } else {
-            printf("%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n",
-                   __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
-                   *BATu, *BATl);
         }
 #endif
         if ((virtual & 0xF0000000) == BEPIu &&
@@ -135,7 +131,7 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
                 /* Get physical address */
                 *real = (*BATl & 0xF0000000) |
                     ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
-                    (virtual & 0x0001FFFF);
+                    (virtual & 0x0001F000);
                 if (*BATl & 0x00000001)
                     *prot = PROT_READ;
                 if (*BATl & 0x00000002)
@@ -145,10 +141,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
                     fprintf(logfile, "BAT %d match: r 0x%08x prot=%c%c\n",
                             i, *real, *prot & PROT_READ ? 'R' : '-',
                             *prot & PROT_WRITE ? 'W' : '-');
-                } else {
-                    printf("BAT %d match: 0x%08x => 0x%08x prot=%c%c\n",
-                           i, virtual, *real, *prot & PROT_READ ? 'R' : '-',
-                           *prot & PROT_WRITE ? 'W' : '-');
                 }
 #endif
                 ret = 0;
@@ -181,7 +173,7 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
 static int find_pte (uint32_t *RPN, int *prot, uint32_t base, uint32_t va,
                      int h, int key, int rw)
 {
-    uint32_t pte0, pte1, keep = 0;
+    uint32_t pte0, pte1, keep = 0, access = 0;
     int i, good = -1, store = 0;
     int ret = -1; /* No entry found */
  
@@ -189,85 +181,97 @@ static int find_pte (uint32_t *RPN, int *prot, uint32_t base, uint32_t va,
         pte0 = ldl_raw((void *)((uint32_t)phys_ram_base + base + (i * 8)));
         pte1 =  ldl_raw((void *)((uint32_t)phys_ram_base + base + (i * 8) + 4));
 #if defined (DEBUG_MMU)
-        printf("Load pte from 0x%08x => 0x%08x 0x%08x\n", base + (i * 8),
-               pte0, pte1);
+	if (loglevel > 0) {
+	    fprintf(logfile, "Load pte from 0x%08x => 0x%08x 0x%08x "
+		    "%d %d %d 0x%08x\n", base + (i * 8), pte0, pte1,
+		    pte0 >> 31, h, (pte0 >> 6) & 1, va);
+	}
 #endif
         /* Check validity and table match */
         if (pte0 & 0x80000000 && (h == ((pte0 >> 6) & 1))) {
-#if defined (DEBUG_MMU)
-            printf("PTE is valid and table matches... compare 0x%08x:%08x\n",
-                   pte0 & 0x7FFFFFBF, va);
-#endif
             /* Check vsid & api */
             if ((pte0 & 0x7FFFFFBF) == va) {
-#if defined (DEBUG_MMU)
-                printf("PTE match !\n");
-#endif
                 if (good == -1) {
                     good = i;
                     keep = pte1;
                 } else {
                     /* All matches should have equal RPN, WIMG & PP */
                     if ((keep & 0xFFFFF07B) != (pte1 & 0xFFFFF07B)) {
-                        printf("Bad RPN/WIMG/PP\n");
+			if (loglevel > 0)
+			    fprintf(logfile, "Bad RPN/WIMG/PP\n");
                         return -1;
                     }
                 }
                 /* Check access rights */
                 if (key == 0) {
-                    *prot = PROT_READ;
+                    access = PROT_READ;
                     if ((pte1 & 0x00000003) != 0x3)
-                        *prot |= PROT_WRITE;
+                        access |= PROT_WRITE;
                 } else {
                     switch (pte1 & 0x00000003) {
                     case 0x0:
-                        *prot = 0;
+                        access = 0;
                         break;
                     case 0x1:
                     case 0x3:
-                        *prot = PROT_READ;
+                        access = PROT_READ;
                         break;
                     case 0x2:
-                        *prot = PROT_READ | PROT_WRITE;
+                        access = PROT_READ | PROT_WRITE;
                         break;
                     }
                 }
-                if ((rw == 0 && *prot != 0) ||
-                    (rw == 1 && (*prot & PROT_WRITE))) {
+                if (ret < 0) {
+		    if ((rw == 0 && (access & PROT_READ)) ||
+			(rw == 1 && (access & PROT_WRITE))) {
 #if defined (DEBUG_MMU)
-                    printf("PTE access granted !\n");
+			if (loglevel > 0)
+			    fprintf(logfile, "PTE access granted !\n");
 #endif
                     good = i;
                     keep = pte1;
                     ret = 0;
-                } else if (ret == -1) {
-                    ret = -2; /* Access right violation */
+		    } else {
+			/* Access right violation */
+			ret = -2;
 #if defined (DEBUG_MMU)
-                    printf("PTE access rejected\n");
+			if (loglevel > 0)
+			    fprintf(logfile, "PTE access rejected\n");
 #endif
                 }
+		    *prot = access;
+		}
             }
         }
     }
     if (good != -1) {
         *RPN = keep & 0xFFFFF000;
 #if defined (DEBUG_MMU)
-        printf("found PTE at addr 0x%08x prot=0x%01x ret=%d\n",
+	if (loglevel > 0) {
+	    fprintf(logfile, "found PTE at addr 0x%08x prot=0x%01x ret=%d\n",
                *RPN, *prot, ret);
+	}
 #endif
         /* Update page flags */
         if (!(keep & 0x00000100)) {
+	    /* Access flag */
             keep |= 0x00000100;
             store = 1;
         }
-        if (rw) {
             if (!(keep & 0x00000080)) {
+	    if (rw && ret == 0) {
+		/* Change flag */
                 keep |= 0x00000080;
                 store = 1;
+	    } else {
+		/* Force page fault for first write access */
+		*prot &= ~PROT_WRITE;
             }
         }
-        if (store)
-            stl_raw((void *)(base + (good * 2) + 1), keep);
+        if (store) {
+	    stl_raw((void *)((uint32_t)phys_ram_base + base + (good * 8) + 4),
+		    keep);
+	}
     }
  
     return ret;
@@ -290,29 +294,37 @@ static int get_segment (CPUState *env, uint32_t *real, int *prot,
  
     sr = env->sr[virtual >> 28];
 #if defined (DEBUG_MMU)
-    printf("Check segment v=0x%08x %d 0x%08x nip=0x%08x lr=0x%08x ir=%d dr=%d "
-           "pr=%d t=%d\n", virtual, virtual >> 28, sr, env->nip,
-           env->lr, msr_ir, msr_dr, msr_pr, type);
+    if (loglevel > 0) {
+	fprintf(logfile, "Check segment v=0x%08x %d 0x%08x nip=0x%08x "
+		"lr=0x%08x ir=%d dr=%d pr=%d %d t=%d\n",
+		virtual, virtual >> 28, sr, env->nip,
+		env->lr, msr_ir, msr_dr, msr_pr, rw, type);
+    }
 #endif
-    key = ((sr & 0x20000000) && msr_pr == 1) ||
-        ((sr & 0x40000000) && msr_pr == 0) ? 1 : 0;
+    key = (((sr & 0x20000000) && msr_pr == 1) ||
+        ((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0;
     if ((sr & 0x80000000) == 0) {
 #if defined (DEBUG_MMU)
-        printf("pte segment: key=%d n=0x%08x\n", key, sr & 0x10000000);
+	if (loglevel > 0)
+	    fprintf(logfile, "pte segment: key=%d n=0x%08x\n",
+		    key, sr & 0x10000000);
 #endif
         /* Check if instruction fetch is allowed, if needed */
         if (type != ACCESS_CODE || (sr & 0x10000000) == 0) {
             /* Page address translation */
             vsid = sr & 0x00FFFFFF;
             pgidx = (virtual >> 12) & 0xFFFF;
-            sdr = env->spr[SDR1];
-            hash = ((vsid ^ pgidx) & 0x07FFFF) << 6;
+            sdr = env->sdr1;
+            hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6;
             mask = ((sdr & 0x000001FF) << 16) | 0xFFC0;
             pg_addr = get_pgaddr(sdr, hash, mask);
             ptem = (vsid << 7) | (pgidx >> 10);
 #if defined (DEBUG_MMU)
-            printf("0 sdr1=0x%08x vsid=0x%06x api=0x%04x hash=0x%07x "
-                   "pg_addr=0x%08x\n", sdr, vsid, pgidx, hash, pg_addr);
+	    if (loglevel > 0) {
+		fprintf(logfile, "0 sdr1=0x%08x vsid=0x%06x api=0x%04x "
+			"hash=0x%07x pg_addr=0x%08x\n", sdr, vsid, pgidx, hash,
+			pg_addr);
+	    }
 #endif
             /* Primary table lookup */
             ret = find_pte(real, prot, pg_addr, ptem, 0, key, rw);
@@ -321,25 +333,27 @@ static int get_segment (CPUState *env, uint32_t *real, int *prot,
                 hash = (~hash) & 0x01FFFFC0;
                 pg_addr = get_pgaddr(sdr, hash, mask);
 #if defined (DEBUG_MMU)
-                printf("1 sdr1=0x%08x vsid=0x%06x api=0x%04x hash=0x%05x "
-                       "pg_addr=0x%08x\n", sdr, vsid, pgidx, hash, pg_addr);
+		if (virtual != 0xEFFFFFFF && loglevel > 0) {
+		    fprintf(logfile, "1 sdr1=0x%08x vsid=0x%06x api=0x%04x "
+			    "hash=0x%05x pg_addr=0x%08x\n", sdr, vsid, pgidx,
+			    hash, pg_addr);
+		}
 #endif
                 ret2 = find_pte(real, prot, pg_addr, ptem, 1, key, rw);
                 if (ret2 != -1)
                     ret = ret2;
             }
-            if (ret != -1)
-                *real |= (virtual & 0x00000FFF);
-            if (ret == -2 && type == ACCESS_CODE && (sr & 0x10000000))
-                ret = -3;
         } else {
 #if defined (DEBUG_MMU)
-            printf("No access allowed\n");
+	    if (loglevel > 0)
+		fprintf(logfile, "No access allowed\n");
 #endif
+	    ret = -3;
         }
     } else {
 #if defined (DEBUG_MMU)
-        printf("direct store...\n");
+        if (loglevel > 0)
+	    fprintf(logfile, "direct store...\n");
 #endif
         /* Direct-store segment : absolutely *BUGGY* for now */
         switch (type) {
@@ -393,9 +407,10 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
     if (loglevel > 0) {
         fprintf(logfile, "%s\n", __func__);
     }
+    
     if ((access_type == ACCESS_CODE && msr_ir == 0) || msr_dr == 0) {
         /* No address translation */
-        *physical = address;
+        *physical = address & ~0xFFF;
         *prot = PROT_READ | PROT_WRITE;
         ret = 0;
     } else {
@@ -406,6 +421,10 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
             ret = get_segment(env, physical, prot, address, rw, access_type);
         }
     }
+    if (loglevel > 0) {
+        fprintf(logfile, "%s address %08x => %08x\n",
+		__func__, address, *physical);
+    }
  
     return ret;
 }
@@ -448,18 +467,17 @@ target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
    NULL, it means that the function was called in C code (i.e. not
    from generated code or from helper.c) */
 /* XXX: fix it to restore all registers */
-void tlb_fill(unsigned long addr, int is_write, int flags, void *retaddr)
+void tlb_fill(unsigned long addr, int is_write, int is_user, void *retaddr)
 {
     TranslationBlock *tb;
-    int ret, is_user;
-    unsigned long pc;
     CPUState *saved_env;
+    unsigned long pc;
+    int ret;
  
     /* XXX: hack to restore env in all cases, even if not called from
        generated code */
     saved_env = env;
     env = cpu_single_env;
-    is_user = flags & 0x01;
     {
         unsigned long tlb_addrr, tlb_addrw;
         int index;
@@ -474,7 +492,7 @@ void tlb_fill(unsigned long addr, int is_write, int flags, void *retaddr)
                tlb_addrr & (TARGET_PAGE_MASK | TLB_INVALID_MASK));
 #endif
     }
-    ret = cpu_handle_mmu_fault(env, addr, is_write, flags, 1);
+    ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, is_user, 1);
     if (ret) {
         if (retaddr) {
             /* now we have a real cpu fault */
@@ -506,7 +524,7 @@ void tlb_fill(unsigned long addr, int is_write, int flags, void *retaddr)
     env = saved_env;
 }
  
-void cpu_ppc_init_mmu(CPUPPCState *env)
+void cpu_ppc_init_mmu(CPUState *env)
 {
     /* Nothing to do: all translation are disabled */
 }
@@ -514,59 +532,36 @@ void cpu_ppc_init_mmu(CPUPPCState *env)
  
 /* Perform address translation */
 int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
-                              int flags, int is_softmmu)
+                              int is_user, int is_softmmu)
 {
     uint32_t physical;
     int prot;
     int exception = 0, error_code = 0;
-    int is_user, access_type;
+    int access_type;
     int ret = 0;
  
 //    printf("%s 0\n", __func__);
-    is_user = flags & 0x01;
     access_type = env->access_type;
     if (env->user_mode_only) {
         /* user mode only emulation */
         ret = -1;
         goto do_fault;
     }
+    /* NASTY BUG workaround */
+    if (access_type == ACCESS_CODE && rw) {
+	//	printf("%s: ERROR WRITE CODE ACCESS\n", __func__);
+	access_type = ACCESS_INT;
+    }
     ret = get_physical_address(env, &physical, &prot,
                                address, rw, access_type);
     if (ret == 0) {
-        ret = tlb_set_page(env, address, physical, prot, is_user, is_softmmu);
+	ret = tlb_set_page(env, address & ~0xFFF, physical, prot,
+			   is_user, is_softmmu);
     } else if (ret < 0) {
     do_fault:
 #if defined (DEBUG_MMU)
-        printf("%s 5\n", __func__);
-        printf("nip=0x%08x LR=0x%08x CTR=0x%08x MSR=0x%08x TBL=0x%08x\n",
-               env->nip, env->lr, env->ctr, /*msr*/0, env->tb[0]);
-        {
-            int  i;
-            for (i = 0; i < 32; i++) {
-                if ((i & 7) == 0)
-                    printf("GPR%02d:", i);
-                printf(" %08x", env->gpr[i]);
-                if ((i & 7) == 7)
-                    printf("\n");
-            }
-            printf("CR: 0x");
-            for (i = 0; i < 8; i++)
-                printf("%01x", env->crf[i]);
-            printf("  [");
-            for (i = 0; i < 8; i++) {
-                char a = '-';
-                if (env->crf[i] & 0x08)
-                    a = 'L';
-                else if (env->crf[i] & 0x04)
-                    a = 'G';
-                else if (env->crf[i] & 0x02)
-                    a = 'E';
-                printf(" %c%c", a, env->crf[i] & 0x01 ? 'O' : ' ');
-            }
-            printf(" ] ");
-        }
-        printf("TB: 0x%08x %08x\n", env->tb[1], env->tb[0]);
-        printf("SRR0 0x%08x SRR1 0x%08x\n", env->spr[SRR0], env->spr[SRR1]);
+	if (loglevel > 0)
+	    cpu_ppc_dump_state(env, logfile, 0);
 #endif
         if (access_type == ACCESS_CODE) {
             exception = EXCP_ISI;
@@ -580,13 +575,13 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
                 error_code = EXCP_ISI_PROT;
                 break;
             case -3:
+		/* No execute protection violation */
                 error_code = EXCP_ISI_NOEXEC;
                 break;
             case -4:
                 /* Direct store exception */
                 /* No code fetch is allowed in direct-store areas */
-                exception = EXCP_ISI;
-                error_code = EXCP_ISI_NOEXEC;
+                error_code = EXCP_ISI_DIRECT;
                 break;
             }
         } else {
@@ -612,15 +607,15 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
                     /* lwarx, ldarx or srwcx. */
                     exception = EXCP_DSI;
                     error_code = EXCP_DSI_NOTSUP | EXCP_DSI_DIRECT;
-                    if (rw)
-                        error_code |= EXCP_DSI_STORE;
                     break;
                 case ACCESS_EXT:
                     /* eciwx or ecowx */
                     exception = EXCP_DSI;
-                    error_code = EXCP_DSI_NOTSUP | EXCP_DSI_DIRECT | EXCP_ECXW;
+                    error_code = EXCP_DSI_NOTSUP | EXCP_DSI_DIRECT |
+			EXCP_DSI_ECXW;
                     break;
                 default:
+		    printf("DSI: invalid exception (%d)\n", ret);
                     exception = EXCP_PROGRAM;
                     error_code = EXCP_INVAL | EXCP_INVAL_INVAL;
                     break;
@@ -628,27 +623,8 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
             }
             if (rw)
                 error_code |= EXCP_DSI_STORE;
-            /* Should find a better solution:
-             * this will be invalid for some exception if more than one
-             * exception occurs for one instruction
-             */
-            env->spr[DSISR] = 0;
-            if (error_code & EXCP_DSI_DIRECT) {
-                env->spr[DSISR] |= 0x80000000;
-                if (access_type == ACCESS_EXT ||
-                    access_type == ACCESS_RES)
-                    env->spr[DSISR] |= 0x04000000;
-            }
-            if ((error_code & 0xF) == EXCP_DSI_TRANSLATE)
-                env->spr[DSISR] |= 0x40000000;
-            if (error_code & EXCP_DSI_PROT)
-                env->spr[DSISR] |= 0x08000000;
-            if (error_code & EXCP_DSI_STORE)
-                env->spr[DSISR] |= 0x02000000;
-            if ((error_code & 0xF) == EXCP_DSI_DABR)
-                env->spr[DSISR] |= 0x00400000;
-            if (access_type == ACCESS_EXT)
-                env->spr[DSISR] |= 0x00100000;
+	    /* Store fault address */
+	    env->spr[DAR] = address;
         }
 #if 0
         printf("%s: set exception to %d %02x\n",
@@ -656,15 +632,13 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
 #endif
         env->exception_index = exception;
         env->error_code = error_code;
-        /* Store fault address */
-        env->spr[DAR] = address;
         ret = 1;
     }
  
     return ret;
 }
  
-uint32_t _load_xer (void)
+uint32_t _load_xer (CPUState *env)
 {
     return (xer_so << XER_SO) |
         (xer_ov << XER_OV) |
@@ -672,7 +646,7 @@ uint32_t _load_xer (void)
         (xer_bc << XER_BC);
 }
  
-void _store_xer (uint32_t value)
+void _store_xer (CPUState *env, uint32_t value)
 {
     xer_so = (value >> XER_SO) & 0x01;
     xer_ov = (value >> XER_OV) & 0x01;
@@ -680,7 +654,7 @@ void _store_xer (uint32_t value)
     xer_bc = (value >> XER_BC) & 0x1f;
 }
  
-uint32_t _load_msr (void)
+uint32_t _load_msr (CPUState *env)
 {
     return (msr_pow << MSR_POW) |
         (msr_ile << MSR_ILE) |
@@ -699,8 +673,13 @@ uint32_t _load_msr (void)
         (msr_le << MSR_LE);
 }
  
-void _store_msr (uint32_t value)
+void _store_msr (CPUState *env, uint32_t value)
 {
+    if (((T0 >> MSR_IR) & 0x01) != msr_ir ||
+        ((T0 >> MSR_DR) & 0x01) != msr_dr) {
+        /* Flush all tlb when changing translation mode or privilege level */
+        do_tlbia();
+    }
     msr_pow = (value >> MSR_POW) & 0x03;
     msr_ile = (value >> MSR_ILE) & 0x01;
     msr_ee = (value >> MSR_EE) & 0x01;
@@ -729,47 +708,16 @@ void do_interrupt (CPUState *env)
     /* Dequeue PPC exceptions */
     if (excp < EXCP_PPC_MAX)
         env->exceptions &= ~(1 << excp);
-    msr = _load_msr();
+    msr = _load_msr(env);
 #if defined (DEBUG_EXCEPTIONS)
-    if (excp != EXCP_DECR && excp == EXCP_PROGRAM && excp < EXCP_PPC_MAX) 
+    if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1) 
     {
         if (loglevel > 0) {
             fprintf(logfile, "Raise exception at 0x%08x => 0x%08x (%02x)\n",
                     env->nip, excp << 8, env->error_code);
-        } else {
-            printf("Raise exception at 0x%08x => 0x%08x (%02x)\n",
-                   env->nip, excp << 8, env->error_code);
-        }
-        printf("nip=0x%08x LR=0x%08x CTR=0x%08x MSR=0x%08x DECR=0x%08x\n",
-               env->nip, env->lr, env->ctr, msr, env->decr);
-        {
-    int i;
-            for (i = 0; i < 32; i++) {
-                if ((i & 7) == 0)
-                    printf("GPR%02d:", i);
-                printf(" %08x", env->gpr[i]);
-                if ((i & 7) == 7)
-                    printf("\n");
-    }
-            printf("CR: 0x");
-    for (i = 0; i < 8; i++)
-                printf("%01x", env->crf[i]);
-            printf("  [");
-            for (i = 0; i < 8; i++) {
-                char a = '-';
-                if (env->crf[i] & 0x08)
-                    a = 'L';
-                else if (env->crf[i] & 0x04)
-                    a = 'G';
-                else if (env->crf[i] & 0x02)
-                    a = 'E';
-                printf(" %c%c", a, env->crf[i] & 0x01 ? 'O' : ' ');
     }
-            printf(" ] ");
-    }
-        printf("TB: 0x%08x %08x\n", env->tb[1], env->tb[0]);
-        printf("XER 0x%08x SRR0 0x%08x SRR1 0x%08x\n",
-               _load_xer(), env->spr[SRR0], env->spr[SRR1]);
+	if (loglevel > 0)
+	    cpu_ppc_dump_state(env, logfile, 0);
     }
 #endif
     /* Generate informations in save/restore registers */
@@ -812,26 +760,63 @@ void do_interrupt (CPUState *env)
         /* data location address has been stored
          * when the fault has been detected
      */
-        goto store_current;
+	msr &= ~0xFFFF0000;
+	env->spr[DSISR] = 0;
+	if (env->error_code &  EXCP_DSI_TRANSLATE)
+	    env->spr[DSISR] |= 0x40000000;
+	else if (env->error_code & EXCP_DSI_PROT)
+	    env->spr[DSISR] |= 0x08000000;
+	else if (env->error_code & EXCP_DSI_NOTSUP) {
+	    env->spr[DSISR] |= 0x80000000;
+	    if (env->error_code & EXCP_DSI_DIRECT)
+		env->spr[DSISR] |= 0x04000000;
+	}
+	if (env->error_code & EXCP_DSI_STORE)
+	    env->spr[DSISR] |= 0x02000000;
+	if ((env->error_code & 0xF) == EXCP_DSI_DABR)
+	    env->spr[DSISR] |= 0x00400000;
+	if (env->error_code & EXCP_DSI_ECXW)
+	    env->spr[DSISR] |= 0x00100000;
+#if defined (DEBUG_EXCEPTIONS)
+	if (loglevel) {
+	    fprintf(logfile, "DSI exception: DSISR=0x%08x, DAR=0x%08x\n",
+		    env->spr[DSISR], env->spr[DAR]);
+	} else {
+	    printf("DSI exception: DSISR=0x%08x, DAR=0x%08x nip=0x%08x\n",
+		   env->spr[DSISR], env->spr[DAR], env->nip);
+	}
+#endif
+        goto store_next;
     case EXCP_ISI:
         /* Store exception cause */
+	msr &= ~0xFFFF0000;
         if (env->error_code == EXCP_ISI_TRANSLATE)
             msr |= 0x40000000;
         else if (env->error_code == EXCP_ISI_NOEXEC ||
-            env->error_code == EXCP_ISI_GUARD)
+		 env->error_code == EXCP_ISI_GUARD ||
+		 env->error_code == EXCP_ISI_DIRECT)
             msr |= 0x10000000;
         else
             msr |= 0x08000000;
+#if defined (DEBUG_EXCEPTIONS)
+	if (loglevel) {
+	    fprintf(logfile, "ISI exception: msr=0x%08x, nip=0x%08x\n",
+		    msr, env->nip);
+	} else {
+	    printf("ISI exception: msr=0x%08x, nip=0x%08x tbl:0x%08x\n",
+		   msr, env->nip, env->spr[V_TBL]);
+	}
+#endif
         goto store_next;
     case EXCP_EXTERNAL:
         if (msr_ee == 0) {
 #if defined (DEBUG_EXCEPTIONS)
             if (loglevel > 0) {
                 fprintf(logfile, "Skipping hardware interrupt\n");
-            } else {
-                printf("Skipping hardware interrupt\n");
     }
 #endif
+            /* Requeue it */
+            do_queue_exception(EXCP_EXTERNAL);
             return;
             }
         goto store_next;
@@ -863,6 +848,7 @@ void do_interrupt (CPUState *env)
                 env->fpscr[7] |= 0x4;
         break;
         case EXCP_INVAL:
+	    printf("Invalid instruction at 0x%08x\n", env->nip);
             msr |= 0x00080000;
         break;
         case EXCP_PRIV:
@@ -888,8 +874,17 @@ void do_interrupt (CPUState *env)
         goto store_next;
     case EXCP_SYSCALL:
 #if defined (DEBUG_EXCEPTIONS)
-        printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n",
-               env->gpr[0], env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
+	if (msr_pr) {
+	    if (loglevel) {
+		fprintf(logfile, "syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n",
+			env->gpr[0], env->gpr[3], env->gpr[4],
+			env->gpr[5], env->gpr[6]);
+	    } else {
+		printf("syscall %d from 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
+		       env->gpr[0], env->nip, env->gpr[3], env->gpr[4],
+		       env->gpr[5], env->gpr[6]);
+	    }
+	}
 #endif
         goto store_next;
     case EXCP_TRACE:
@@ -898,20 +893,16 @@ void do_interrupt (CPUState *env)
         goto store_next;
     case EXCP_MTMSR:
         /* Nothing to do */
-#if defined (DEBUG_EXCEPTIONS)
-        printf("%s: escape EXCP_MTMSR\n", __func__);
-#endif
         return;
     case EXCP_BRANCH:
         /* Nothing to do */
-#if defined (DEBUG_EXCEPTIONS)
-        printf("%s: escape EXCP_BRANCH\n", __func__);
-#endif
         return;
     case EXCP_RFI:
         /* Restore user-mode state */
+	tb_flush(env);
 #if defined (DEBUG_EXCEPTIONS)
-        printf("%s: escape EXCP_RFI\n", __func__);
+	if (msr_pr == 1)
+	    printf("Return from exception => 0x%08x\n", (uint32_t)env->nip);
 #endif
         return;
     store_current:
@@ -18,11 +18,11 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
  
+//#define DEBUG_OP
+
 #include "config.h"
 #include "exec.h"
  
-//#define DEBUG_OP
-
 #define regs (env)
 #define Ts0 (int32_t)T0
 #define Ts1 (int32_t)T1
@@ -226,6 +226,17 @@ PPC_OP(process_exceptions)
     }
 }
  
+PPC_OP(debug)
+{
+    env->nip = PARAM(1);
+    env->brkstate = 1;
+#if defined (DEBUG_OP)
+    dump_state();
+#endif
+    do_queue_exception(EXCP_DEBUG);
+    RETURN();
+}
+
 /* Segment registers load and store with immediate index */
 PPC_OP(load_srin)
 {
@@ -1443,10 +1454,9 @@ PPC_OP(fneg)
 }
  
 /* Load and store */
-#if defined(CONFIG_USER_ONLY)
 #define MEMSUFFIX _raw
 #include "op_mem.h"
-#else
+#if !defined(CONFIG_USER_ONLY)
 #define MEMSUFFIX _user
 #include "op_mem.h"
  
@@ -1460,8 +1470,11 @@ PPC_OP(rfi)
     T0 = regs->spr[SRR1] & ~0xFFFF0000;
     do_store_msr();
     do_tlbia();
+#if defined (DEBUG_OP)
     dump_rfi();
+#endif
     regs->nip = regs->spr[SRR0] & ~0x00000003;
+    do_queue_exception(EXCP_RFI);
     if (env->exceptions != 0) {
         do_check_exception_state();
     }
@@ -20,10 +20,9 @@
 #include <math.h>
 #include "exec.h"
  
-#if defined(CONFIG_USER_ONLY)
 #define MEMSUFFIX _raw
 #include "op_helper_mem.h"
-#else
+#if !defined(CONFIG_USER_ONLY)
 #define MEMSUFFIX _user
 #include "op_helper_mem.h"
 #define MEMSUFFIX _kernel
@@ -122,8 +121,7 @@ void do_load_msr (void)
 void do_store_msr (void)
 {
     if (((T0 >> MSR_IR) & 0x01) != msr_ir ||
-        ((T0 >> MSR_DR) & 0x01) != msr_dr ||
-        ((T0 >> MSR_PR) & 0x01) != msr_pr) {
+        ((T0 >> MSR_DR) & 0x01) != msr_dr) {
         /* Flush all tlb when changing translation mode or privilege level */
         do_tlbia();
     }
@@ -371,44 +369,18 @@ void do_tlbie (void)
  
 /*****************************************************************************/
 /* Special helpers for debug */
+extern FILE *stdout;
+
+void dump_state (void)
+{
+    cpu_ppc_dump_state(env, stdout, 0);
+}
+
 void dump_rfi (void)
 {
 #if 0
-    printf("Return from interrupt\n");
-    printf("nip=0x%08x LR=0x%08x CTR=0x%08x MSR=0x%08x\n",
-           env->nip, env->lr, env->ctr,
-           (msr_pow << MSR_POW) | (msr_ile << MSR_ILE) | (msr_ee << MSR_EE) |
-           (msr_pr  << MSR_PR)  | (msr_fp  << MSR_FP)  | (msr_me << MSR_ME) |
-           (msr_fe0 << MSR_FE0) | (msr_se  << MSR_SE)  | (msr_be << MSR_BE) |
-           (msr_fe1 << MSR_FE1) | (msr_ip  << MSR_IP)  | (msr_ir << MSR_IR) |
-           (msr_dr  << MSR_DR)  | (msr_ri  << MSR_RI)  | (msr_le << MSR_LE));
-    {
-        int  i;
-        for (i = 0; i < 32; i++) {
-            if ((i & 7) == 0)
-                printf("GPR%02d:", i);
-            printf(" %08x", env->gpr[i]);
-            if ((i & 7) == 7)
-                printf("\n");
-        }
-        printf("CR: 0x");
-        for (i = 0; i < 8; i++)
-            printf("%01x", env->crf[i]);
-        printf("  [");
-        for (i = 0; i < 8; i++) {
-            char a = '-';
-            if (env->crf[i] & 0x08)
-                a = 'L';
-            else if (env->crf[i] & 0x04)
-                a = 'G';
-            else if (env->crf[i] & 0x02)
-                a = 'E';
-            printf(" %c%c", a, env->crf[i] & 0x01 ? 'O' : ' ');
-        }
-        printf(" ] ");
-    }
-    printf("TB: 0x%08x %08x\n", env->tb[1], env->tb[0]);
-    printf("SRR0 0x%08x SRR1 0x%08x\n", env->spr[SRR0], env->spr[SRR1]);
+    printf("Return from interrupt %d => 0x%08x\n", pos, env->nip);
+    //    cpu_ppc_dump_state(env, stdout, 0);
 #endif
 }
  
@@ -2168,22 +2168,48 @@ GEN_HANDLER(mtspr, 0x1F, 0x13, 0x0E, 0x00000001, PPC_MISC)
 /* dcbf */
 GEN_HANDLER(dcbf, 0x1F, 0x16, 0x02, 0x03E00001, PPC_CACHE)
 {
+    if (rA(ctx->opcode) == 0) {
+        gen_op_load_gpr_T0(rB(ctx->opcode));
+    } else {
+        gen_op_load_gpr_T0(rA(ctx->opcode));
+        gen_op_load_gpr_T1(rB(ctx->opcode));
+        gen_op_add();
+    }
+    op_ldst(lbz);
 }
  
 /* dcbi (Supervisor only) */
 GEN_HANDLER(dcbi, 0x1F, 0x16, 0x0E, 0x03E00001, PPC_CACHE)
 {
-#if !defined(CONFIG_USER_ONLY)
-    if (!ctx->supervisor)
-#endif
-    {
+#if defined(CONFIG_USER_ONLY)
+    RET_PRIVOPC();
+#else
+    if (!ctx->supervisor) {
         RET_PRIVOPC();
     }
+    if (rA(ctx->opcode) == 0) {
+        gen_op_load_gpr_T0(rB(ctx->opcode));
+    } else {
+        gen_op_load_gpr_T0(rA(ctx->opcode));
+        gen_op_load_gpr_T1(rB(ctx->opcode));
+        gen_op_add();
+    }
+    op_ldst(lbz);
+    op_ldst(stb);
+#endif
 }
  
 /* dcdst */
 GEN_HANDLER(dcbst, 0x1F, 0x16, 0x01, 0x03E00001, PPC_CACHE)
 {
+    if (rA(ctx->opcode) == 0) {
+        gen_op_load_gpr_T0(rB(ctx->opcode));
+    } else {
+        gen_op_load_gpr_T0(rA(ctx->opcode));
+        gen_op_load_gpr_T1(rB(ctx->opcode));
+        gen_op_add();
+    }
+    op_ldst(lbz);
 }
  
 /* dcbt */
@@ -2863,7 +2889,7 @@ void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags)
  
     fprintf(f, "nip=0x%08x LR=0x%08x CTR=0x%08x XER=0x%08x "
             "MSR=0x%08x\n", env->nip, env->lr, env->ctr,
-            _load_xer(), _load_msr());
+            _load_xer(env), _load_msr(env));
         for (i = 0; i < 32; i++) {
             if ((i & 7) == 0)
             fprintf(f, "GPR%02d:", i);
@@ -2894,8 +2920,8 @@ void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags)
             if ((i & 3) == 3)
             fprintf(f, "\n");
     }
-    fprintf(f, "SRR0 0x%08x SRR1 0x%08x\n",
-            env->spr[SRR0], env->spr[SRR1]);
+    fprintf(f, "SRR0 0x%08x SRR1 0x%08x DECR=0x%08x excp:0x%08x\n",
+            env->spr[SRR0], env->spr[SRR1], env->decr, env->exceptions);
     fprintf(f, "reservation 0x%08x\n", env->reserve);
     fflush(f);
 }
@@ -2934,6 +2960,7 @@ CPUPPCState *cpu_ppc_init(void)
 #if defined(CONFIG_USER_ONLY)
     msr_pr = 1;
 #endif
+    env->access_type = ACCESS_INT;
  
     return env;
 }
@@ -2977,6 +3004,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
     /* Single step trace mode */
     msr_se = 1;
 #endif
+    env->access_type = ACCESS_CODE;
     /* Set env in case of segfault during code fetch */
     while (ctx.exception == EXCP_NONE && gen_opc_ptr < gen_opc_end) {
         if (search_pc) {
@@ -3073,9 +3101,8 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
                 ctx.exception = EXCP_TRACE;
     }
         }
-        /* if too long translation, stop generation too */
-        if (gen_opc_ptr >= gen_opc_end ||
-            ((uint32_t)ctx.nip - pc_start) >= (TARGET_PAGE_SIZE - 32)) {
+        /* if we reach a page boundary, stop generation */
+        if (((uint32_t)ctx.nip & (TARGET_PAGE_SIZE - 1)) == 0) {
             if (ctx.exception == EXCP_NONE) {
         gen_op_b((long)ctx.tb, (uint32_t)ctx.nip);
                 ctx.exception = EXCP_BRANCH;
@@ -3111,6 +3138,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
     } else {
         tb->size = (uint32_t)ctx.nip - pc_start;
     }
+    env->access_type = ACCESS_INT;
 #ifdef DEBUG_DISAS
     if (loglevel > 0) {
         fprintf(logfile, "---------------- excp: %04x\n", ctx.exception);
@@ -230,6 +230,9 @@ int cpu_restore_state(TranslationBlock *tb,
         CASE3(lfs):
             type = ACCESS_FLOAT;
             break;
+        CASE3(lwarx):
+            type = ACCESS_RES;
+            break;
         CASE3(stwcx):
             type = ACCESS_RES;
             break;
@@ -68,6 +68,8 @@ extern void __sigaction();
  
 #include "exec-all.h"
  
+//#define DO_TB_FLUSH
+
 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
  
 //#define DEBUG_UNUSED_IOPORT
@@ -1201,6 +1203,9 @@ int qemu_loadvm(const char *filename)
         goto the_end;
     }
     for(;;) {
+#if defined (DO_TB_FLUSH)
+        tb_flush();
+#endif
         len = qemu_get_byte(f);
         if (feof(f))
             break;
@@ -1380,6 +1385,15 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
  
+#elif defined(TARGET_PPC)
+void cpu_save(QEMUFile *f, void *opaque)
+{
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    return 0;
+}
 #else
  
 #warning No CPU save/restore functions
@@ -1706,6 +1720,7 @@ int main(int argc, char **argv)
     const char *kernel_filename, *kernel_cmdline;
     DisplayState *ds = &display_state;
     int cyls, heads, secs;
+    int start_emulation = 1;
     uint8_t macaddr[6];
  
 #if !defined(CONFIG_SOFTMMU)
@@ -1744,7 +1759,7 @@ int main(int argc, char **argv)
         nd_table[i].fd = -1;
  
     for(;;) {
-        c = getopt_long_only(argc, argv, "hm:d:n:sp:L:", long_options, &long_index);
+        c = getopt_long_only(argc, argv, "hm:d:n:sp:L:S", long_options, &long_index);
         if (c == -1)
             break;
         switch(c) {
@@ -1915,6 +1930,9 @@ int main(int argc, char **argv)
         case 'L':
             bios_dir = optarg;
             break;
+	case 'S':
+	    start_emulation = 0;
+	    break;
         }
     }
  
@@ -2121,7 +2139,9 @@ int main(int argc, char **argv)
             ds, fd_filename, snapshot,
             kernel_filename, kernel_cmdline, initrd_filename);
 #elif defined(TARGET_PPC)
-    ppc_init();
+    ppc_init(ram_size, vga_ram_size, boot_device,
+	     ds, fd_filename, snapshot,
+	     kernel_filename, kernel_cmdline, initrd_filename);
 #endif
  
     /* launched after the device init so that it can display or not a
@@ -2142,6 +2162,7 @@ int main(int argc, char **argv)
         }
     } else 
 #endif
+    if (start_emulation)
     {
         vm_start();
     }