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cleanups to xbox_memory_init

This commit is contained in:
espes 2013-03-20 23:51:31 +11:00
parent 1c0a9e6984
commit 1e400474d0
1 changed files with 7 additions and 27 deletions
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34
hw/i386/xbox.c
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@ -47,12 +47,11 @@ static void xbox_memory_init(MemoryRegion *system_memory,
MemoryRegion **ram_memory) MemoryRegion **ram_memory)
{ {
MemoryRegion *ram; MemoryRegion *ram;
MemoryRegion *ram_below_4g;
int ret; int ret;
char *filename; char *filename;
int bios_size, isa_bios_size; int bios_size;
MemoryRegion *bios, *isa_bios; MemoryRegion *bios;
MemoryRegion *map_bios; MemoryRegion *map_bios;
uint32_t map_loc; uint32_t map_loc;
@ -62,17 +61,14 @@ static void xbox_memory_init(MemoryRegion *system_memory,
* with older qemus that used qemu_ram_alloc(). * with older qemus that used qemu_ram_alloc().
*/ */
ram = g_malloc(sizeof(*ram)); ram = g_malloc(sizeof(*ram));
memory_region_init_ram(ram, "pc.ram", mem_size); memory_region_init_ram(ram, "xbox.ram", mem_size);
vmstate_register_ram_global(ram); vmstate_register_ram_global(ram);
*ram_memory = ram; *ram_memory = ram;
ram_below_4g = g_malloc(sizeof(*ram_below_4g)); memory_region_add_subregion(system_memory, 0, ram);
memory_region_init_alias(ram_below_4g, "ram-below-4g", ram,
0, mem_size);
memory_region_add_subregion(system_memory, 0, ram_below_4g);
/* Load the bios. (mostly from pc_sysfw) /* Load the bios. (mostly from pc_sysfw)
* Can't use it verbatim, since we need the bios repeated\ * Can't use it verbatim, since we need the bios repeated
* over top 1MB of memory. * over top 1MB of memory.
*/ */
if (bios_name == NULL) { if (bios_name == NULL) {
@ -85,12 +81,12 @@ static void xbox_memory_init(MemoryRegion *system_memory,
bios_size = -1; bios_size = -1;
} }
bios = g_malloc(sizeof(*bios)); bios = g_malloc(sizeof(*bios));
memory_region_init_ram(bios, "pc.bios", bios_size); memory_region_init_ram(bios, "xbox.bios", bios_size);
vmstate_register_ram_global(bios); vmstate_register_ram_global(bios);
memory_region_set_readonly(bios, true); memory_region_set_readonly(bios, true);
ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1); ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1);
if (ret != 0) { if (ret != 0) {
fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name); fprintf(stderr, "qemu: could not load xbox BIOS '%s'\n", bios_name);
exit(1); exit(1);
} }
if (filename) { if (filename) {
@ -98,22 +94,6 @@ static void xbox_memory_init(MemoryRegion *system_memory,
} }
/* 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;
}
isa_bios = g_malloc(sizeof(*isa_bios));
memory_region_init_alias(isa_bios, "isa-bios", bios,
bios_size - isa_bios_size, isa_bios_size);
memory_region_add_subregion_overlap(rom_memory,
0x100000 - isa_bios_size,
isa_bios,
1);
memory_region_set_readonly(isa_bios, true);
/* map the bios repeated at the top of memory */ /* map the bios repeated at the top of memory */
for (map_loc=(uint32_t)(-bios_size); map_loc >= 0xff000000; map_loc-=bios_size) { for (map_loc=(uint32_t)(-bios_size); map_loc >= 0xff000000; map_loc-=bios_size) {
map_bios = g_malloc(sizeof(*map_bios)); map_bios = g_malloc(sizeof(*map_bios));