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Only map BIOS space when it was actually loaded.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3408 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-10-18 15:05:11 +00:00
parent 8279006411
commit b533415989
1 changed files with 8 additions and 9 deletions
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17
hw/mips_mipssim.c
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@ -82,7 +82,7 @@ mips_mipssim_init (int ram_size, int vga_ram_size, int boot_device,
char buf[1024];
unsigned long bios_offset;
CPUState *env;
int ret;
int bios_size;
mips_def_t *def;
/* Init CPUs. */
@ -103,25 +103,24 @@ mips_mipssim_init (int ram_size, int vga_ram_size, int boot_device,
/* Allocate RAM. */
cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
/* Map the BIOS / boot exception handler. */
bios_offset = ram_size + vga_ram_size;
/* Load a BIOS / boot exception handler image. */
bios_offset = ram_size + vga_ram_size;
if (bios_name == NULL)
bios_name = BIOS_FILENAME;
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
ret = load_image(buf, phys_ram_base + bios_offset);
if ((ret < 0 || ret > BIOS_SIZE) && !kernel_filename) {
bios_size = load_image(buf, phys_ram_base + bios_offset);
if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) {
/* Bail out if we have neither a kernel image nor boot vector code. */
fprintf(stderr,
"qemu: Could not load MIPS bios '%s', and no -kernel argument was specified\n",
buf);
exit(1);
} else {
/* We have a boot vector start address. */
env->PC[env->current_tc] = (target_long)0xbfc00000;
/* Map the BIOS / boot exception handler. */
cpu_register_physical_memory(0x1fc00000LL,
ret, bios_offset | IO_MEM_ROM);
bios_size, bios_offset | IO_MEM_ROM);
/* We have a boot vector start address. */
env->PC[env->current_tc] = (target_long)(int32_t)0xbfc00000;
}
if (kernel_filename) {