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initrd support (Blue Swirl)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1306 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-02-22 19:08:41 +00:00
parent 0b9dc5e4c3
commit 713c45faf8
1 changed files with 24 additions and 1 deletions
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25
hw/sun4m.c
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@ -25,6 +25,7 @@
#include "m48t08.h"
#define KERNEL_LOAD_ADDR 0x00004000
#define INITRD_LOAD_ADDR 0x00800000
#define PROM_ADDR 0xffd00000
#define PROM_FILENAMEB "proll.bin"
#define PROM_FILENAMEE "proll.elf"
@ -135,7 +136,8 @@ void sun4m_init(int ram_size, int vga_ram_size, int boot_device,
{
char buf[1024];
int ret, linux_boot;
unsigned long vram_size = 0x100000, prom_offset;
unsigned int i;
unsigned long vram_size = 0x100000, prom_offset, initrd_size;
linux_boot = (kernel_filename != NULL);
@ -180,5 +182,26 @@ void sun4m_init(int ram_size, int vga_ram_size, int boot_device,
kernel_filename);
exit(1);
}
/* load initrd */
initrd_size = 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);
}
}
if (initrd_size > 0) {
for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i)
== 0x48647253) { // HdrS
stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size);
break;
}
}
}
}
}