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/*
* QEMU PC System Emulator
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*
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* Copyright ( c ) 2003 - 2004 Fabrice Bellard
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*
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* 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 .
*/
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# include "hw.h"
# include "pc.h"
# include "fdc.h"
# include "pci.h"
# include "block.h"
# include "sysemu.h"
# include "audio/audio.h"
# include "net.h"
# include "smbus.h"
# include "boards.h"
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# include "console.h"
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# include "fw_cfg.h"
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# include "virtio-blk.h"
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# include "virtio-balloon.h"
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/* output Bochs bios info messages */
// # define DEBUG_BIOS
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# define BIOS_FILENAME "bios.bin"
# define VGABIOS_FILENAME "vgabios.bin"
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# define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
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# define PC_MAX_BIOS_SIZE ( 4 * 1024 * 1024 )
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/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
# define ACPI_DATA_SIZE 0x10000
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# define BIOS_CFG_IOPORT 0x510
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# define MAX_IDE_BUS 2
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static fdctrl_t * floppy_controller ;
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static RTCState * rtc_state ;
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static PITState * pit ;
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static IOAPICState * ioapic ;
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static PCIDevice * i440fx_state ;
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static void ioport80_write ( void * opaque , uint32_t addr , uint32_t data )
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{
}
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/* MSDOS compatibility mode FPU exception support */
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static qemu_irq ferr_irq ;
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/* XXX: add IGNNE support */
void cpu_set_ferr ( CPUX86State * s )
{
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qemu_irq_raise ( ferr_irq );
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}
static void ioportF0_write ( void * opaque , uint32_t addr , uint32_t data )
{
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qemu_irq_lower ( ferr_irq );
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}
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/* TSC handling */
uint64_t cpu_get_tsc ( CPUX86State * env )
{
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/* Note : when using kqemu , it is more logical to return the host TSC
because kqemu does not trap the RDTSC instruction for
performance reasons */
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# ifdef USE_KQEMU
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if ( env -> kqemu_enabled ) {
return cpu_get_real_ticks ();
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} else
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# endif
{
return cpu_get_ticks ();
}
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}
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/* SMM support */
void cpu_smm_update ( CPUState * env )
{
if ( i440fx_state && env == first_cpu )
i440fx_set_smm ( i440fx_state , ( env -> hflags >> HF_SMM_SHIFT ) & 1 );
}
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/* IRQ handling */
int cpu_get_pic_interrupt ( CPUState * env )
{
int intno ;
intno = apic_get_interrupt ( env );
if ( intno >= 0 ) {
/* set irq request if a PIC irq is still pending */
/* XXX: improve that */
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pic_update_irq ( isa_pic );
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return intno ;
}
/* read the irq from the PIC */
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if ( ! apic_accept_pic_intr ( env ))
return - 1 ;
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intno = pic_read_irq ( isa_pic );
return intno ;
}
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static void pic_irq_request ( void * opaque , int irq , int level )
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{
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CPUState * env = first_cpu ;
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if ( env -> apic_state ) {
while ( env ) {
if ( apic_accept_pic_intr ( env ))
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apic_deliver_pic_intr ( env , level );
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env = env -> next_cpu ;
}
} else {
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if ( level )
cpu_interrupt ( env , CPU_INTERRUPT_HARD );
else
cpu_reset_interrupt ( env , CPU_INTERRUPT_HARD );
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}
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}
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/* PC cmos mappings */
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# define REG_EQUIPMENT_BYTE 0x14
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static int cmos_get_fd_drive_type ( int fd0 )
{
int val ;
switch ( fd0 ) {
case 0 :
/* 1.44 Mb 3"5 drive */
val = 4 ;
break ;
case 1 :
/* 2.88 Mb 3"5 drive */
val = 5 ;
break ;
case 2 :
/* 1.2 Mb 5"5 drive */
val = 2 ;
break ;
default :
val = 0 ;
break ;
}
return val ;
}
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static void cmos_init_hd ( int type_ofs , int info_ofs , BlockDriverState * hd )
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{
RTCState * s = rtc_state ;
int cylinders , heads , sectors ;
bdrv_get_geometry_hint ( hd , & cylinders , & heads , & sectors );
rtc_set_memory ( s , type_ofs , 47 );
rtc_set_memory ( s , info_ofs , cylinders );
rtc_set_memory ( s , info_ofs + 1 , cylinders >> 8 );
rtc_set_memory ( s , info_ofs + 2 , heads );
rtc_set_memory ( s , info_ofs + 3 , 0xff );
rtc_set_memory ( s , info_ofs + 4 , 0xff );
rtc_set_memory ( s , info_ofs + 5 , 0xc0 | (( heads > 8 ) << 3 ));
rtc_set_memory ( s , info_ofs + 6 , cylinders );
rtc_set_memory ( s , info_ofs + 7 , cylinders >> 8 );
rtc_set_memory ( s , info_ofs + 8 , sectors );
}
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/* convert boot_device letter to something recognizable by the bios */
static int boot_device2nibble ( char boot_device )
{
switch ( boot_device ) {
case 'a' :
case 'b' :
return 0x01 ; /* floppy boot */
case 'c' :
return 0x02 ; /* hard drive boot */
case 'd' :
return 0x03 ; /* CD-ROM boot */
case 'n' :
return 0x04 ; /* Network boot */
}
return 0 ;
}
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/* copy / pasted from cmos_init , should be made a general function
and used there as well */
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static int pc_boot_set ( void * opaque , const char * boot_device )
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{
# define PC_MAX_BOOT_DEVICES 3
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RTCState * s = ( RTCState * ) opaque ;
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int nbds , bds [ 3 ] = { 0 , };
int i ;
nbds = strlen ( boot_device );
if ( nbds > PC_MAX_BOOT_DEVICES ) {
term_printf ( "Too many boot devices for PC \n " );
return ( 1 );
}
for ( i = 0 ; i < nbds ; i ++ ) {
bds [ i ] = boot_device2nibble ( boot_device [ i ]);
if ( bds [ i ] == 0 ) {
term_printf ( "Invalid boot device for PC: '%c' \n " ,
boot_device [ i ]);
return ( 1 );
}
}
rtc_set_memory ( s , 0x3d , ( bds [ 1 ] << 4 ) | bds [ 0 ]);
rtc_set_memory ( s , 0x38 , ( bds [ 2 ] << 4 ));
return ( 0 );
}
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/* hd_table must contain 4 block drivers */
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static void cmos_init ( ram_addr_t ram_size , ram_addr_t above_4g_mem_size ,
const char * boot_device , BlockDriverState ** hd_table )
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{
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RTCState * s = rtc_state ;
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int nbds , bds [ 3 ] = { 0 , };
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int val ;
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int fd0 , fd1 , nb ;
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int i ;
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/* various important CMOS locations needed by PC/Bochs bios */
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/* memory size */
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val = 640 ; /* base memory in K */
rtc_set_memory ( s , 0x15 , val );
rtc_set_memory ( s , 0x16 , val >> 8 );
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val = ( ram_size / 1024 ) - 1024 ;
if ( val > 65535 )
val = 65535 ;
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rtc_set_memory ( s , 0x17 , val );
rtc_set_memory ( s , 0x18 , val >> 8 );
rtc_set_memory ( s , 0x30 , val );
rtc_set_memory ( s , 0x31 , val >> 8 );
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if ( above_4g_mem_size ) {
rtc_set_memory ( s , 0x5b , ( unsigned int ) above_4g_mem_size >> 16 );
rtc_set_memory ( s , 0x5c , ( unsigned int ) above_4g_mem_size >> 24 );
rtc_set_memory ( s , 0x5d , ( uint64_t ) above_4g_mem_size >> 32 );
}
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if ( ram_size > ( 16 * 1024 * 1024 ))
val = ( ram_size / 65536 ) - (( 16 * 1024 * 1024 ) / 65536 );
else
val = 0 ;
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if ( val > 65535 )
val = 65535 ;
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rtc_set_memory ( s , 0x34 , val );
rtc_set_memory ( s , 0x35 , val >> 8 );
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/* set the number of CPU */
rtc_set_memory ( s , 0x5f , smp_cpus - 1 );
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/* set boot devices, and disable floppy signature check if requested */
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# define PC_MAX_BOOT_DEVICES 3
nbds = strlen ( boot_device );
if ( nbds > PC_MAX_BOOT_DEVICES ) {
fprintf ( stderr , "Too many boot devices for PC \n " );
exit ( 1 );
}
for ( i = 0 ; i < nbds ; i ++ ) {
bds [ i ] = boot_device2nibble ( boot_device [ i ]);
if ( bds [ i ] == 0 ) {
fprintf ( stderr , "Invalid boot device for PC: '%c' \n " ,
boot_device [ i ]);
exit ( 1 );
}
}
rtc_set_memory ( s , 0x3d , ( bds [ 1 ] << 4 ) | bds [ 0 ]);
rtc_set_memory ( s , 0x38 , ( bds [ 2 ] << 4 ) | ( fd_bootchk ? 0x0 : 0x1 ));
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/* floppy type */
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fd0 = fdctrl_get_drive_type ( floppy_controller , 0 );
fd1 = fdctrl_get_drive_type ( floppy_controller , 1 );
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val = ( cmos_get_fd_drive_type ( fd0 ) << 4 ) | cmos_get_fd_drive_type ( fd1 );
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rtc_set_memory ( s , 0x10 , val );
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val = 0 ;
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nb = 0 ;
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if ( fd0 < 3 )
nb ++ ;
if ( fd1 < 3 )
nb ++ ;
switch ( nb ) {
case 0 :
break ;
case 1 :
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val |= 0x01 ; /* 1 drive, ready for boot */
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break ;
case 2 :
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val |= 0x41 ; /* 2 drives, ready for boot */
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break ;
}
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val |= 0x02 ; /* FPU is there */
val |= 0x04 ; /* PS/2 mouse installed */
rtc_set_memory ( s , REG_EQUIPMENT_BYTE , val );
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/* hard drives */
rtc_set_memory ( s , 0x12 , ( hd_table [ 0 ] ? 0xf0 : 0 ) | ( hd_table [ 1 ] ? 0x0f : 0 ));
if ( hd_table [ 0 ])
cmos_init_hd ( 0x19 , 0x1b , hd_table [ 0 ]);
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if ( hd_table [ 1 ])
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cmos_init_hd ( 0x1a , 0x24 , hd_table [ 1 ]);
val = 0 ;
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for ( i = 0 ; i < 4 ; i ++ ) {
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if ( hd_table [ i ]) {
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int cylinders , heads , sectors , translation ;
/* NOTE : bdrv_get_geometry_hint () returns the physical
geometry . It is always such that : 1 <= sects <= 63 , 1
<= heads <= 16 , 1 <= cylinders <= 16383 . The BIOS
geometry can be different if a translation is done . */
translation = bdrv_get_translation_hint ( hd_table [ i ]);
if ( translation == BIOS_ATA_TRANSLATION_AUTO ) {
bdrv_get_geometry_hint ( hd_table [ i ], & cylinders , & heads , & sectors );
if ( cylinders <= 1024 && heads <= 16 && sectors <= 63 ) {
/* No translation. */
translation = 0 ;
} else {
/* LBA translation. */
translation = 1 ;
}
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} else {
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translation -- ;
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}
val |= translation << ( i * 2 );
}
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}
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rtc_set_memory ( s , 0x39 , val );
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}
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void ioport_set_a20 ( int enable )
{
/* XXX: send to all CPUs ? */
cpu_x86_set_a20 ( first_cpu , enable );
}
int ioport_get_a20 ( void )
{
return (( first_cpu -> a20_mask >> 20 ) & 1 );
}
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static void ioport92_write ( void * opaque , uint32_t addr , uint32_t val )
{
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ioport_set_a20 (( val >> 1 ) & 1 );
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/* XXX: bit 0 is fast reset */
}
static uint32_t ioport92_read ( void * opaque , uint32_t addr )
{
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return ioport_get_a20 () << 1 ;
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}
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/***********************************************************/
/* Bochs BIOS debug ports */
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static void bochs_bios_write ( void * opaque , uint32_t addr , uint32_t val )
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{
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static const char shutdown_str [ 8 ] = "Shutdown" ;
static int shutdown_index = 0 ;
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switch ( addr ) {
/* Bochs BIOS messages */
case 0x400 :
case 0x401 :
fprintf ( stderr , "BIOS panic at rombios.c, line %d \n " , val );
exit ( 1 );
case 0x402 :
case 0x403 :
# ifdef DEBUG_BIOS
fprintf ( stderr , "%c" , val );
# endif
break ;
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case 0x8900 :
/* same as Bochs power off */
if ( val == shutdown_str [ shutdown_index ]) {
shutdown_index ++ ;
if ( shutdown_index == 8 ) {
shutdown_index = 0 ;
qemu_system_shutdown_request ();
}
} else {
shutdown_index = 0 ;
}
break ;
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/* LGPL'ed VGA BIOS messages */
case 0x501 :
case 0x502 :
fprintf ( stderr , "VGA BIOS panic, line %d \n " , val );
exit ( 1 );
case 0x500 :
case 0x503 :
# ifdef DEBUG_BIOS
fprintf ( stderr , "%c" , val );
# endif
break ;
}
}
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static void bochs_bios_init ( void )
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{
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void * fw_cfg ;
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register_ioport_write ( 0x400 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x401 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x402 , 1 , 1 , bochs_bios_write , NULL );
register_ioport_write ( 0x403 , 1 , 1 , bochs_bios_write , NULL );
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register_ioport_write ( 0x8900 , 1 , 1 , bochs_bios_write , NULL );
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register_ioport_write ( 0x501 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x502 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x500 , 1 , 1 , bochs_bios_write , NULL );
register_ioport_write ( 0x503 , 1 , 1 , bochs_bios_write , NULL );
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fw_cfg = fw_cfg_init ( BIOS_CFG_IOPORT , BIOS_CFG_IOPORT + 1 , 0 , 0 );
fw_cfg_add_i32 ( fw_cfg , FW_CFG_ID , 1 );
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fw_cfg_add_i64 ( fw_cfg , FW_CFG_RAM_SIZE , ( uint64_t ) ram_size );
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}
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/* Generate an initial boot sector which sets state and jump to
a specified vector */
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static void generate_bootsect ( uint8_t * option_rom ,
uint32_t gpr [ 8 ], uint16_t segs [ 6 ], uint16_t ip )
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{
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uint8_t rom [ 512 ], * p , * reloc ;
uint8_t sum ;
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int i ;
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memset ( rom , 0 , sizeof ( rom ));
p = rom ;
/* Make sure we have an option rom signature */
* p ++ = 0x55 ;
* p ++ = 0xaa ;
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/* ROM size in sectors*/
* p ++ = 1 ;
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/* Hook int19 */
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* p ++ = 0x50 ; /* push ax */
* p ++ = 0x1e ; /* push ds */
* p ++ = 0x31 ; * p ++ = 0xc0 ; /* xor ax, ax */
* p ++ = 0x8e ; * p ++ = 0xd8 ; /* mov ax, ds */
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* p ++ = 0xc7 ; * p ++ = 0x06 ; /* movvw _start,0x64 */
* p ++ = 0x64 ; * p ++ = 0x00 ;
reloc = p ;
* p ++ = 0x00 ; * p ++ = 0x00 ;
* p ++ = 0x8c ; * p ++ = 0x0e ; /* mov cs,0x66 */
* p ++ = 0x66 ; * p ++ = 0x00 ;
* p ++ = 0x1f ; /* pop ds */
* p ++ = 0x58 ; /* pop ax */
* p ++ = 0xcb ; /* lret */
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/* Actual code */
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* reloc = ( p - rom );
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* p ++ = 0xfa ; /* CLI */
* p ++ = 0xfc ; /* CLD */
for ( i = 0 ; i < 6 ; i ++ ) {
if ( i == 1 ) /* Skip CS */
continue ;
* p ++ = 0xb8 ; /* MOV AX,imm16 */
* p ++ = segs [ i ];
* p ++ = segs [ i ] >> 8 ;
* p ++ = 0x8e ; /* MOV <seg>,AX */
* p ++ = 0xc0 + ( i << 3 );
}
for ( i = 0 ; i < 8 ; i ++ ) {
* p ++ = 0x66 ; /* 32-bit operand size */
* p ++ = 0xb8 + i ; /* MOV <reg>,imm32 */
* p ++ = gpr [ i ];
* p ++ = gpr [ i ] >> 8 ;
* p ++ = gpr [ i ] >> 16 ;
* p ++ = gpr [ i ] >> 24 ;
}
* p ++ = 0xea ; /* JMP FAR */
* p ++ = ip ; /* IP */
* p ++ = ip >> 8 ;
* p ++ = segs [ 1 ]; /* CS */
* p ++ = segs [ 1 ] >> 8 ;
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/* sign rom */
sum = 0 ;
for ( i = 0 ; i < ( sizeof ( rom ) - 1 ); i ++ )
sum += rom [ i ];
rom [ sizeof ( rom ) - 1 ] = - sum ;
memcpy ( option_rom , rom , sizeof ( rom ));
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}
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static long get_file_size ( FILE * f )
{
long where , size ;
/* XXX: on Unix systems, using fstat() probably makes more sense */
where = ftell ( f );
fseek ( f , 0 , SEEK_END );
size = ftell ( f );
fseek ( f , where , SEEK_SET );
return size ;
}
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static void load_linux ( uint8_t * option_rom ,
const char * kernel_filename ,
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const char * initrd_filename ,
const char * kernel_cmdline )
{
uint16_t protocol ;
uint32_t gpr [ 8 ];
uint16_t seg [ 6 ];
uint16_t real_seg ;
int setup_size , kernel_size , initrd_size , cmdline_size ;
uint32_t initrd_max ;
uint8_t header [ 1024 ];
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target_phys_addr_t real_addr , prot_addr , cmdline_addr , initrd_addr ;
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FILE * f , * fi ;
/* Align to 16 bytes as a paranoia measure */
cmdline_size = ( strlen ( kernel_cmdline ) + 16 ) & ~ 15 ;
/* load the kernel header */
f = fopen ( kernel_filename , "rb" );
if ( ! f || ! ( kernel_size = get_file_size ( f )) ||
fread ( header , 1 , 1024 , f ) != 1024 ) {
fprintf ( stderr , "qemu: could not load kernel '%s' \n " ,
kernel_filename );
exit ( 1 );
}
/* kernel protocol version */
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# if 0
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fprintf ( stderr , "header magic: %#x \n " , ldl_p ( header + 0x202 ));
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# endif
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if ( ldl_p ( header + 0x202 ) == 0x53726448 )
protocol = lduw_p ( header + 0x206 );
else
protocol = 0 ;
if ( protocol < 0x200 || ! ( header [ 0x211 ] & 0x01 )) {
/* Low kernel */
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real_addr = 0x90000 ;
cmdline_addr = 0x9a000 - cmdline_size ;
prot_addr = 0x10000 ;
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} else if ( protocol < 0x202 ) {
/* High but ancient kernel */
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real_addr = 0x90000 ;
cmdline_addr = 0x9a000 - cmdline_size ;
prot_addr = 0x100000 ;
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} else {
/* High and recent kernel */
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real_addr = 0x10000 ;
cmdline_addr = 0x20000 ;
prot_addr = 0x100000 ;
ths
authored
18 years ago
585
586
}
587
# if 0
ths
authored
18 years ago
588
fprintf ( stderr ,
589
590
591
"qemu: real_addr = 0x" TARGET_FMT_plx " \n "
"qemu: cmdline_addr = 0x" TARGET_FMT_plx " \n "
"qemu: prot_addr = 0x" TARGET_FMT_plx " \n " ,
592
593
594
real_addr ,
cmdline_addr ,
prot_addr );
595
# endif
ths
authored
18 years ago
596
597
598
599
600
601
602
603
604
605
606
/* highest address for loading the initrd */
if ( protocol >= 0x203 )
initrd_max = ldl_p ( header + 0x22c );
else
initrd_max = 0x37ffffff ;
if ( initrd_max >= ram_size - ACPI_DATA_SIZE )
initrd_max = ram_size - ACPI_DATA_SIZE - 1 ;
/* kernel command line */
607
pstrcpy_targphys ( cmdline_addr , 4096 , kernel_cmdline );
ths
authored
18 years ago
608
609
if ( protocol >= 0x202 ) {
610
stl_p ( header + 0x228 , cmdline_addr );
ths
authored
18 years ago
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
} else {
stw_p ( header + 0x20 , 0xA33F );
stw_p ( header + 0x22 , cmdline_addr - real_addr );
}
/* loader type */
/* High nybble = B reserved for Qemu ; low nybble is revision number .
If this code is substantially changed , you may want to consider
incrementing the revision . */
if ( protocol >= 0x200 )
header [ 0x210 ] = 0xB0 ;
/* heap */
if ( protocol >= 0x201 ) {
header [ 0x211 ] |= 0x80 ; /* CAN_USE_HEAP */
stw_p ( header + 0x224 , cmdline_addr - real_addr - 0x200 );
}
/* load initrd */
if ( initrd_filename ) {
if ( protocol < 0x200 ) {
fprintf ( stderr , "qemu: linux kernel too old to load a ram disk \n " );
exit ( 1 );
}
fi = fopen ( initrd_filename , "rb" );
if ( ! fi ) {
fprintf ( stderr , "qemu: could not load initial ram disk '%s' \n " ,
initrd_filename );
exit ( 1 );
}
initrd_size = get_file_size ( fi );
644
initrd_addr = ( initrd_max - initrd_size ) & ~ 4095 ;
ths
authored
18 years ago
645
646
647
fprintf ( stderr , "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
" \n " , initrd_size , initrd_addr );
ths
authored
18 years ago
648
649
if ( ! fread_targphys_ok ( initrd_addr , initrd_size , fi )) {
ths
authored
18 years ago
650
651
652
653
654
655
fprintf ( stderr , "qemu: read error on initial ram disk '%s' \n " ,
initrd_filename );
exit ( 1 );
}
fclose ( fi );
656
stl_p ( header + 0x218 , initrd_addr );
ths
authored
18 years ago
657
658
659
660
stl_p ( header + 0x21c , initrd_size );
}
/* store the finalized header and load the rest of the kernel */
661
cpu_physical_memory_write ( real_addr , header , 1024 );
ths
authored
18 years ago
662
663
664
665
666
667
668
669
setup_size = header [ 0x1f1 ];
if ( setup_size == 0 )
setup_size = 4 ;
setup_size = ( setup_size + 1 ) * 512 ;
kernel_size -= setup_size ; /* Size of protected-mode code */
670
671
if ( ! fread_targphys_ok ( real_addr + 1024 , setup_size - 1024 , f ) ||
! fread_targphys_ok ( prot_addr , kernel_size , f )) {
ths
authored
18 years ago
672
673
674
675
676
677
678
fprintf ( stderr , "qemu: read error on kernel '%s' \n " ,
kernel_filename );
exit ( 1 );
}
fclose ( f );
/* generate bootsector to set up the initial register state */
679
real_seg = real_addr >> 4 ;
ths
authored
18 years ago
680
681
682
683
684
seg [ 0 ] = seg [ 2 ] = seg [ 3 ] = seg [ 4 ] = seg [ 4 ] = real_seg ;
seg [ 1 ] = real_seg + 0x20 ; /* CS */
memset ( gpr , 0 , sizeof gpr );
gpr [ 4 ] = cmdline_addr - real_addr - 16 ; /* SP (-16 is paranoia) */
685
generate_bootsect ( option_rom , gpr , seg , 0 );
ths
authored
18 years ago
686
687
}
688
689
690
691
692
693
static void main_cpu_reset ( void * opaque )
{
CPUState * env = opaque ;
cpu_reset ( env );
}
694
695
696
697
698
699
static const int ide_iobase [ 2 ] = { 0x1f0 , 0x170 };
static const int ide_iobase2 [ 2 ] = { 0x3f6 , 0x376 };
static const int ide_irq [ 2 ] = { 14 , 15 };
# define NE2000_NB_MAX 6
700
static int ne2000_io [ NE2000_NB_MAX ] = { 0x300 , 0x320 , 0x340 , 0x360 , 0x280 , 0x380 };
701
702
static int ne2000_irq [ NE2000_NB_MAX ] = { 9 , 10 , 11 , 3 , 4 , 5 };
703
704
705
static int serial_io [ MAX_SERIAL_PORTS ] = { 0x3f8 , 0x2f8 , 0x3e8 , 0x2e8 };
static int serial_irq [ MAX_SERIAL_PORTS ] = { 4 , 3 , 4 , 3 };
706
707
708
static int parallel_io [ MAX_PARALLEL_PORTS ] = { 0x378 , 0x278 , 0x3bc };
static int parallel_irq [ MAX_PARALLEL_PORTS ] = { 7 , 7 , 7 };
709
# ifdef HAS_AUDIO
710
static void audio_init ( PCIBus * pci_bus , qemu_irq * pic )
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
{
struct soundhw * c ;
int audio_enabled = 0 ;
for ( c = soundhw ; ! audio_enabled && c -> name ; ++ c ) {
audio_enabled = c -> enabled ;
}
if ( audio_enabled ) {
AudioState * s ;
s = AUD_init ();
if ( s ) {
for ( c = soundhw ; c -> name ; ++ c ) {
if ( c -> enabled ) {
if ( c -> isa ) {
727
c -> init . init_isa ( s , pic );
728
729
730
731
732
733
734
735
736
737
738
739
740
}
else {
if ( pci_bus ) {
c -> init . init_pci ( pci_bus , s );
}
}
}
}
}
}
}
# endif
741
static void pc_init_ne2k_isa ( NICInfo * nd , qemu_irq * pic )
742
743
744
745
746
{
static int nb_ne2k = 0 ;
if ( nb_ne2k == NE2000_NB_MAX )
return ;
747
isa_ne2000_init ( ne2000_io [ nb_ne2k ], pic [ ne2000_irq [ nb_ne2k ]], nd );
748
749
750
nb_ne2k ++ ;
}
751
/* PC hardware initialisation */
752
static void pc_init1 ( ram_addr_t ram_size , int vga_ram_size ,
753
const char * boot_device , DisplayState * ds ,
754
const char * kernel_filename , const char * kernel_cmdline ,
755
const char * initrd_filename ,
756
int pci_enabled , const char * cpu_model )
757
758
{
char buf [ 1024 ];
ths
authored
18 years ago
759
int ret , linux_boot , i ;
760
ram_addr_t ram_addr , vga_ram_addr , bios_offset , vga_bios_offset ;
761
ram_addr_t below_4g_mem_size , above_4g_mem_size = 0 ;
762
int bios_size , isa_bios_size , vga_bios_size ;
763
PCIBus * pci_bus ;
764
int piix3_devfn = - 1 ;
765
CPUState * env ;
766
NICInfo * nd ;
767
768
qemu_irq * cpu_irq ;
qemu_irq * i8259 ;
ths
authored
17 years ago
769
770
771
int index ;
BlockDriverState * hd [ MAX_IDE_BUS * MAX_IDE_DEVS ];
BlockDriverState * fd [ MAX_FD ];
772
773
774
775
776
777
778
779
if ( ram_size >= 0xe0000000 ) {
above_4g_mem_size = ram_size - 0xe0000000 ;
below_4g_mem_size = 0xe0000000 ;
} else {
below_4g_mem_size = ram_size ;
}
780
781
linux_boot = ( kernel_filename != NULL );
782
/* init CPUs */
783
784
785
786
787
788
789
790
if ( cpu_model == NULL ) {
# ifdef TARGET_X86_64
cpu_model = "qemu64" ;
# else
cpu_model = "qemu32" ;
# endif
}
791
for ( i = 0 ; i < smp_cpus ; i ++ ) {
792
793
794
795
796
env = cpu_init ( cpu_model );
if ( ! env ) {
fprintf ( stderr , "Unable to find x86 CPU definition \n " );
exit ( 1 );
}
797
if ( i != 0 )
798
env -> halted = 1 ;
799
800
801
802
803
804
805
806
807
808
if ( smp_cpus > 1 ) {
/* XXX: enable it in all cases */
env -> cpuid_features |= CPUID_APIC ;
}
qemu_register_reset ( main_cpu_reset , env );
if ( pci_enabled ) {
apic_init ( env );
}
}
809
810
vmport_init ();
811
/* allocate RAM */
812
813
814
815
816
817
818
819
820
821
822
823
ram_addr = qemu_ram_alloc ( 0xa0000 );
cpu_register_physical_memory ( 0 , 0xa0000 , ram_addr );
/* Allocate , even though we won ' t register , so we don ' t break the
* phys_ram_base + PA assumption . This range includes vga ( 0xa0000 - 0xc0000 ),
* and some bios areas , which will be registered later
*/
ram_addr = qemu_ram_alloc ( 0x100000 - 0xa0000 );
ram_addr = qemu_ram_alloc ( below_4g_mem_size - 0x100000 );
cpu_register_physical_memory ( 0x100000 ,
below_4g_mem_size - 0x100000 ,
ram_addr );
824
825
826
/* above 4giga memory allocation */
if ( above_4g_mem_size > 0 ) {
827
828
ram_addr = qemu_ram_alloc ( above_4g_mem_size );
cpu_register_physical_memory ( 0x100000000ULL ,
829
above_4g_mem_size ,
830
ram_addr );
831
}
832
833
834
835
/* allocate VGA RAM */
vga_ram_addr = qemu_ram_alloc ( vga_ram_size );
836
837
/* BIOS load */
838
839
840
if ( bios_name == NULL )
bios_name = BIOS_FILENAME ;
snprintf ( buf , sizeof ( buf ), "%s/%s" , bios_dir , bios_name );
841
bios_size = get_image_size ( buf );
ths
authored
18 years ago
842
if ( bios_size <= 0 ||
843
( bios_size % 65536 ) != 0 ) {
844
845
goto bios_error ;
}
846
bios_offset = qemu_ram_alloc ( bios_size );
847
848
849
ret = load_image ( buf , phys_ram_base + bios_offset );
if ( ret != bios_size ) {
bios_error :
850
fprintf ( stderr , "qemu: could not load PC BIOS '%s' \n " , buf );
851
852
exit ( 1 );
}
853
854
/* VGA BIOS load */
855
856
857
858
859
if ( cirrus_vga_enabled ) {
snprintf ( buf , sizeof ( buf ), "%s/%s" , bios_dir , VGABIOS_CIRRUS_FILENAME );
} else {
snprintf ( buf , sizeof ( buf ), "%s/%s" , bios_dir , VGABIOS_FILENAME );
}
860
vga_bios_size = get_image_size ( buf );
ths
authored
18 years ago
861
if ( vga_bios_size <= 0 || vga_bios_size > 65536 )
862
863
864
goto vga_bios_error ;
vga_bios_offset = qemu_ram_alloc ( 65536 );
865
ret = load_image ( buf , phys_ram_base + vga_bios_offset );
866
867
868
869
870
871
if ( ret != vga_bios_size ) {
vga_bios_error :
fprintf ( stderr , "qemu: could not load VGA BIOS '%s' \n " , buf );
exit ( 1 );
}
872
/* setup basic memory access */
ths
authored
18 years ago
873
cpu_register_physical_memory ( 0xc0000 , 0x10000 ,
874
875
876
877
878
879
vga_bios_offset | IO_MEM_ROM );
/* map the last 128KB of the BIOS in ISA space */
isa_bios_size = bios_size ;
if ( isa_bios_size > ( 128 * 1024 ))
isa_bios_size = 128 * 1024 ;
ths
authored
18 years ago
880
881
cpu_register_physical_memory ( 0x100000 - isa_bios_size ,
isa_bios_size ,
882
( bios_offset + bios_size - isa_bios_size ) | IO_MEM_ROM );
ths
authored
18 years ago
883
884
885
886
887
888
{
ram_addr_t option_rom_offset ;
int size , offset ;
offset = 0 ;
889
890
891
892
893
894
895
896
897
if ( linux_boot ) {
option_rom_offset = qemu_ram_alloc ( TARGET_PAGE_SIZE );
load_linux ( phys_ram_base + option_rom_offset ,
kernel_filename , initrd_filename , kernel_cmdline );
cpu_register_physical_memory ( 0xd0000 , TARGET_PAGE_SIZE ,
option_rom_offset | IO_MEM_ROM );
offset = TARGET_PAGE_SIZE ;
}
898
899
900
for ( i = 0 ; i < nb_option_roms ; i ++ ) {
size = get_image_size ( option_rom [ i ]);
if ( size < 0 ) {
ths
authored
18 years ago
901
fprintf ( stderr , "Could not load option rom '%s' \n " ,
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
option_rom [ i ]);
exit ( 1 );
}
if ( size > ( 0x10000 - offset ))
goto option_rom_error ;
option_rom_offset = qemu_ram_alloc ( size );
ret = load_image ( option_rom [ i ], phys_ram_base + option_rom_offset );
if ( ret != size ) {
option_rom_error :
fprintf ( stderr , "Too many option ROMS \n " );
exit ( 1 );
}
size = ( size + 4095 ) & ~ 4095 ;
cpu_register_physical_memory ( 0xd0000 + offset ,
size , option_rom_offset | IO_MEM_ROM );
offset += size ;
}
ths
authored
18 years ago
919
920
}
921
/* map all the bios at the top of memory */
ths
authored
18 years ago
922
cpu_register_physical_memory (( uint32_t )( - bios_size ),
923
bios_size , bios_offset | IO_MEM_ROM );
ths
authored
18 years ago
924
925
926
bochs_bios_init ();
927
cpu_irq = qemu_allocate_irqs ( pic_irq_request , NULL , 1 );
928
929
930
i8259 = i8259_init ( cpu_irq [ 0 ]);
ferr_irq = i8259 [ 13 ];
931
if ( pci_enabled ) {
932
pci_bus = i440fx_init ( & i440fx_state , i8259 );
ths
authored
18 years ago
933
piix3_devfn = piix3_init ( pci_bus , - 1 );
934
935
} else {
pci_bus = NULL ;
936
937
}
938
/* init basic PC hardware */
939
register_ioport_write ( 0x80 , 1 , 1 , ioport80_write , NULL );
940
941
942
register_ioport_write ( 0xf0 , 1 , 1 , ioportF0_write , NULL );
943
944
if ( cirrus_vga_enabled ) {
if ( pci_enabled ) {
ths
authored
18 years ago
945
946
pci_cirrus_vga_init ( pci_bus ,
ds , phys_ram_base + vga_ram_addr ,
947
vga_ram_addr , vga_ram_size );
948
} else {
ths
authored
18 years ago
949
isa_cirrus_vga_init ( ds , phys_ram_base + vga_ram_addr ,
950
vga_ram_addr , vga_ram_size );
951
}
ths
authored
18 years ago
952
953
} else if ( vmsvga_enabled ) {
if ( pci_enabled )
954
955
pci_vmsvga_init ( pci_bus , ds , phys_ram_base + vga_ram_addr ,
vga_ram_addr , vga_ram_size );
ths
authored
18 years ago
956
957
else
fprintf ( stderr , "%s: vmware_vga: no PCI bus \n " , __FUNCTION__ );
958
} else {
959
if ( pci_enabled ) {
ths
authored
18 years ago
960
pci_vga_init ( pci_bus , ds , phys_ram_base + vga_ram_addr ,
961
vga_ram_addr , vga_ram_size , 0 , 0 );
962
} else {
ths
authored
18 years ago
963
isa_vga_init ( ds , phys_ram_base + vga_ram_addr ,
964
vga_ram_addr , vga_ram_size );
965
}
966
}
967
968
rtc_state = rtc_init ( 0x70 , i8259 [ 8 ]);
969
970
971
qemu_register_boot_set ( pc_boot_set , rtc_state );
972
973
974
register_ioport_read ( 0x92 , 1 , 1 , ioport92_read , NULL );
register_ioport_write ( 0x92 , 1 , 1 , ioport92_write , NULL );
975
976
977
if ( pci_enabled ) {
ioapic = ioapic_init ();
}
978
pit = pit_init ( 0x40 , i8259 [ 0 ]);
979
pcspk_init ( pit );
980
981
982
if ( pci_enabled ) {
pic_set_alt_irq_func ( isa_pic , ioapic_set_irq , ioapic );
}
983
984
985
for ( i = 0 ; i < MAX_SERIAL_PORTS ; i ++ ) {
if ( serial_hds [ i ]) {
986
987
serial_init ( serial_io [ i ], i8259 [ serial_irq [ i ]], 115200 ,
serial_hds [ i ]);
988
989
}
}
990
991
992
for ( i = 0 ; i < MAX_PARALLEL_PORTS ; i ++ ) {
if ( parallel_hds [ i ]) {
993
994
parallel_init ( parallel_io [ i ], i8259 [ parallel_irq [ i ]],
parallel_hds [ i ]);
995
996
997
}
}
998
999
1000
1001
1002
1003
1004
1005
for ( i = 0 ; i < nb_nics ; i ++ ) {
nd = & nd_table [ i ];
if ( ! nd -> model ) {
if ( pci_enabled ) {
nd -> model = "ne2k_pci" ;
} else {
nd -> model = "ne2k_isa" ;
}
1006
}
1007
if ( strcmp ( nd -> model , "ne2k_isa" ) == 0 ) {
1008
pc_init_ne2k_isa ( nd , i8259 );
1009
} else if ( pci_enabled ) {
1010
1011
if ( strcmp ( nd -> model , "?" ) == 0 )
fprintf ( stderr , "qemu: Supported ISA NICs: ne2k_isa \n " );
ths
authored
18 years ago
1012
pci_nic_init ( pci_bus , nd , - 1 );
1013
1014
1015
} else if ( strcmp ( nd -> model , "?" ) == 0 ) {
fprintf ( stderr , "qemu: Supported ISA NICs: ne2k_isa \n " );
exit ( 1 );
1016
1017
1018
} else {
fprintf ( stderr , "qemu: Unsupported NIC: %s \n " , nd -> model );
exit ( 1 );
1019
}
1020
}
1021
ths
authored
17 years ago
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
if ( drive_get_max_bus ( IF_IDE ) >= MAX_IDE_BUS ) {
fprintf ( stderr , "qemu: too many IDE bus \n " );
exit ( 1 );
}
for ( i = 0 ; i < MAX_IDE_BUS * MAX_IDE_DEVS ; i ++ ) {
index = drive_get_index ( IF_IDE , i / MAX_IDE_DEVS , i % MAX_IDE_DEVS );
if ( index != - 1 )
hd [ i ] = drives_table [ index ]. bdrv ;
else
hd [ i ] = NULL ;
}
1035
if ( pci_enabled ) {
ths
authored
17 years ago
1036
pci_piix3_ide_init ( pci_bus , hd , piix3_devfn + 1 , i8259 );
1037
} else {
ths
authored
17 years ago
1038
for ( i = 0 ; i < MAX_IDE_BUS ; i ++ ) {
1039
isa_ide_init ( ide_iobase [ i ], ide_iobase2 [ i ], i8259 [ ide_irq [ i ]],
ths
authored
17 years ago
1040
hd [ MAX_IDE_DEVS * i ], hd [ MAX_IDE_DEVS * i + 1 ]);
1041
}
1042
}
1043
1044
i8042_init ( i8259 [ 1 ], i8259 [ 12 ], 0x60 );
1045
DMA_init ( 0 );
1046
# ifdef HAS_AUDIO
1047
audio_init ( pci_enabled ? pci_bus : NULL , i8259 );
1048
# endif
1049
ths
authored
17 years ago
1050
1051
1052
1053
1054
1055
1056
1057
for ( i = 0 ; i < MAX_FD ; i ++ ) {
index = drive_get_index ( IF_FLOPPY , 0 , i );
if ( index != - 1 )
fd [ i ] = drives_table [ index ]. bdrv ;
else
fd [ i ] = NULL ;
}
floppy_controller = fdctrl_init ( i8259 [ 6 ], 2 , 0 , 0x3f0 , fd );
1058
1059
cmos_init ( below_4g_mem_size , above_4g_mem_size , boot_device , hd );
1060
1061
if ( pci_enabled && usb_enabled ) {
ths
authored
18 years ago
1062
usb_uhci_piix3_init ( pci_bus , piix3_devfn + 2 );
1063
1064
}
1065
if ( pci_enabled && acpi_enabled ) {
ths
authored
18 years ago
1066
uint8_t * eeprom_buf = qemu_mallocz ( 8 * 256 ); /* XXX: make this persistent */
1067
1068
1069
i2c_bus * smbus ;
/* TODO: Populate SPD eeprom data. */
1070
smbus = piix4_pm_init ( pci_bus , piix3_devfn + 3 , 0xb100 , i8259 [ 9 ]);
ths
authored
18 years ago
1071
for ( i = 0 ; i < 8 ; i ++ ) {
1072
smbus_eeprom_device_init ( smbus , 0x50 + i , eeprom_buf + ( i * 256 ));
ths
authored
18 years ago
1073
}
1074
}
ths
authored
18 years ago
1075
1076
1077
1078
if ( i440fx_state ) {
i440fx_init_memory_mappings ( i440fx_state );
}
ths
authored
17 years ago
1079
1080
if ( pci_enabled ) {
ths
authored
17 years ago
1081
1082
int max_bus ;
int bus , unit ;
1083
void * scsi ;
ths
authored
18 years ago
1084
ths
authored
17 years ago
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
max_bus = drive_get_max_bus ( IF_SCSI );
for ( bus = 0 ; bus <= max_bus ; bus ++ ) {
scsi = lsi_scsi_init ( pci_bus , - 1 );
for ( unit = 0 ; unit < LSI_MAX_DEVS ; unit ++ ) {
index = drive_get_index ( IF_SCSI , bus , unit );
if ( index == - 1 )
continue ;
lsi_scsi_attach ( scsi , drives_table [ index ]. bdrv , unit );
}
}
1096
}
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
/* Add virtio block devices */
if ( pci_enabled ) {
int index ;
int unit_id = 0 ;
while (( index = drive_get_index ( IF_VIRTIO , 0 , unit_id )) != - 1 ) {
virtio_blk_init ( pci_bus , 0x1AF4 , 0x1001 ,
drives_table [ index ]. bdrv );
unit_id ++ ;
}
}
1109
1110
1111
1112
/* Add virtio balloon device */
if ( pci_enabled )
virtio_balloon_init ( pci_bus );
1113
}
1114
1115
static void pc_init_pci ( ram_addr_t ram_size , int vga_ram_size ,
1116
const char * boot_device , DisplayState * ds ,
ths
authored
18 years ago
1117
const char * kernel_filename ,
1118
const char * kernel_cmdline ,
1119
1120
const char * initrd_filename ,
const char * cpu_model )
1121
{
1122
pc_init1 ( ram_size , vga_ram_size , boot_device , ds ,
1123
kernel_filename , kernel_cmdline ,
1124
initrd_filename , 1 , cpu_model );
1125
1126
}
1127
static void pc_init_isa ( ram_addr_t ram_size , int vga_ram_size ,
1128
const char * boot_device , DisplayState * ds ,
ths
authored
18 years ago
1129
const char * kernel_filename ,
1130
const char * kernel_cmdline ,
1131
1132
const char * initrd_filename ,
const char * cpu_model )
1133
{
1134
pc_init1 ( ram_size , vga_ram_size , boot_device , ds ,
1135
kernel_filename , kernel_cmdline ,
1136
initrd_filename , 0 , cpu_model );
1137
1138
}
1139
QEMUMachine pc_machine = {
1140
1141
1142
1143
. name = "pc" ,
. desc = "Standard PC" ,
. init = pc_init_pci ,
. ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE ,
1144
. max_cpus = 255 ,
1145
1146
1147
};
QEMUMachine isapc_machine = {
1148
1149
1150
1151
. name = "isapc" ,
. desc = "ISA-only PC" ,
. init = pc_init_isa ,
. ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE ,
1152
. max_cpus = 1 ,
1153
};