diff options
| -rw-r--r-- | hw/mips/mips_malta.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c index 05d9bf5..2edc8e1 100644 --- a/hw/mips/mips_malta.c +++ b/hw/mips/mips_malta.c @@ -793,7 +793,7 @@ void mips_malta_init(QEMUMachineInitArgs *args) pflash_t *fl; MemoryRegion *system_memory = get_system_memory(); MemoryRegion *ram = g_new(MemoryRegion, 1); - MemoryRegion *bios, *bios_alias = g_new(MemoryRegion, 1); + MemoryRegion *bios, *bios_copy = g_new(MemoryRegion, 1); target_long bios_size = FLASH_SIZE; int64_t kernel_entry; PCIBus *pci_bus; @@ -933,14 +933,23 @@ void mips_malta_init(QEMUMachineInitArgs *args) #endif } - /* Map the BIOS at a 2nd physical location, as on the real board. */ - memory_region_init_alias(bios_alias, NULL, "bios.1fc", bios, 0, BIOS_SIZE); - memory_region_add_subregion(system_memory, RESET_ADDRESS, bios_alias); + /* + * Map the BIOS at a 2nd physical location, as on the real board. + * Copy it so that we can patch in the MIPS revision, which cannot be + * handled by an overlapping region as the resulting ROM code subpage + * regions are not executable. + */ + memory_region_init_ram(bios_copy, NULL, "bios.1fc", BIOS_SIZE); + if (!rom_copy(memory_region_get_ram_ptr(bios_copy), + FLASH_ADDRESS, bios_size)) { + memcpy(memory_region_get_ram_ptr(bios_copy), + memory_region_get_ram_ptr(bios), bios_size); + } + memory_region_set_readonly(bios_copy, true); + memory_region_add_subregion(system_memory, RESET_ADDRESS, bios_copy); - /* Board ID = 0x420 (Malta Board with CoreLV) - XXX: theoretically 0x1e000010 should map to flash and 0x1fc00010 should - map to the board ID. */ - stl_p(memory_region_get_ram_ptr(bios) + 0x10, 0x00000420); + /* Board ID = 0x420 (Malta Board with CoreLV) */ + stl_p(memory_region_get_ram_ptr(bios_copy) + 0x10, 0x00000420); /* Init internal devices */ cpu_mips_irq_init_cpu(env); |