gwj / at91sam9263 · Commits

Commit a80274c31bd94f7a345934d2544075a6d183ebac

Authored by pbrook
1 parent 0aeaa8ce

Large kernel initrd fix (initial patch by Daniel Jacobowitz). 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2562 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 1 changed file with 26 additions and 3 deletions
... ... @@ -32,9 +32,11 @@
32 32 #define LINUX_BOOT_FILENAME "linux_boot.bin"
33 33  
34 34 #define KERNEL_LOAD_ADDR 0x00100000
35   -#define INITRD_LOAD_ADDR 0x00600000
  35 +#define MAX_INITRD_LOAD_ADDR 0x38000000
36 36 #define KERNEL_PARAMS_ADDR 0x00090000
37 37 #define KERNEL_CMDLINE_ADDR 0x00099000
  38 +/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
  39 +#define ACPI_DATA_SIZE 0x10000
38 40  
39 41 static fdctrl_t *floppy_controller;
40 42 static RTCState *rtc_state;
... ... @@ -452,6 +454,7 @@ static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
452 454 char buf[1024];
453 455 int ret, linux_boot, initrd_size, i;
454 456 ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
  457 + ram_addr_t initrd_offset;
455 458 int bios_size, isa_bios_size, vga_bios_size;
456 459 PCIBus *pci_bus;
457 460 int piix3_devfn = -1;
... ... @@ -599,8 +602,28 @@ static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
599 602  
600 603 /* load initrd */
601 604 initrd_size = 0;
  605 + initrd_offset = 0;
602 606 if (initrd_filename) {
603   - initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
  607 + initrd_size = get_image_size (initrd_filename);
  608 + if (initrd_size > 0) {
  609 + initrd_offset = (ram_size - initrd_size) & TARGET_PAGE_MASK;
  610 + /* Leave space for BIOS ACPI tables. */
  611 + initrd_offset -= ACPI_DATA_SIZE;
  612 + /* Avoid the last 64k to avoid 2.2.x kernel bugs. */
  613 + initrd_offset -= 0x10000;
  614 + if (initrd_offset > MAX_INITRD_LOAD_ADDR)
  615 + initrd_offset = MAX_INITRD_LOAD_ADDR;
  616 +
  617 + if (initrd_size > ram_size
  618 + || initrd_offset < KERNEL_LOAD_ADDR + ret) {
  619 + fprintf(stderr,
  620 + "qemu: memory too small for initial ram disk '%s'\n",
  621 + initrd_filename);
  622 + exit(1);
  623 + }
  624 + initrd_size = load_image(initrd_filename,
  625 + phys_ram_base + initrd_offset);
  626 + }
604 627 if (initrd_size < 0) {
605 628 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
606 629 initrd_filename);
... ... @@ -608,7 +631,7 @@ static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
608 631 }
609 632 }
610 633 if (initrd_size > 0) {
611   - stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
  634 + stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, initrd_offset);
612 635 stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
613 636 }
614 637 pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
... ...