haraldwolff/qemu-patch-raspberry4
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suport device driver initialization model

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According to PnP specification, Appendix B, Option ROMs
that support DDIM (device driver initialization model) should
have their memory space writeable.

KVM deviates from us here, by removing the IO_MEM_ROM flag,
to allow for PCI option ROMs (they require DDIM). However,
there's absolutely no reason we can't do the same.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Glauber Costa 2009-04-23 15:20:55 -04:00 committed by Anthony Liguori
parent 8b91408b62
commit 49669fc551
1 changed files with 1 additions and 2 deletions
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3
hw/pc.c
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@ -920,8 +920,7 @@ static void pc_init1(ram_addr_t ram_size, int vga_ram_size,
option_rom_offset = qemu_ram_alloc(0x20000);
oprom_area_size = 0;
cpu_register_physical_memory(0xc0000, 0x20000,
option_rom_offset | IO_MEM_ROM);
cpu_register_physical_memory(0xc0000, 0x20000, option_rom_offset);
if (using_vga) {
/* VGA BIOS load */