Hi,
I need to following to fix multiboot booting for me.
Should linuxboot.bin and multiboot.bin end up in pc-bios instead of
pc-bios/optionrom?
Signed-off-by: Adam Lackorzynski <a...@os.inf.tu-dresden.de>
---
hw/pc.c | 4 ++--
pc-bios/optionrom/multiboot.S | 5 ++++-
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/hw/pc.c b/hw/pc.c
index 7c791c4..1c8f95c 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -661,7 +661,7 @@ static int load_multiboot(void *fw_cfg,
/* append module data at the end of last module */
mb_kernel_data = qemu_realloc(mb_kernel_data,
- mh_load_addr - mb_mod_end);
+ mb_mod_end - mh_load_addr);
load_image(initrd_filename,
mb_kernel_data + mb_mod_start - mh_load_addr);
@@ -720,7 +720,7 @@ static int load_multiboot(void *fw_cfg,
fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, mb_bootinfo_data,
sizeof(bootinfo));
- option_rom[nb_option_roms] = "multiboot.bin";
+ option_rom[nb_option_roms] = "optionrom/multiboot.bin";
nb_option_roms++;
return 1; /* yes, we are multiboot */
diff --git a/pc-bios/optionrom/multiboot.S b/pc-bios/optionrom/multiboot.S
index be5c9fc..9131837 100644
--- a/pc-bios/optionrom/multiboot.S
+++ b/pc-bios/optionrom/multiboot.S
@@ -62,6 +62,9 @@ run_multiboot:
add %eax, %ebx
movl %ebx, %gs:GS_GDT_DESC + 2
+ xor %eax, %eax
+ mov %eax, %es
+
/* Read the bootinfo struct into RAM */
read_fw_blob(FW_CFG_INITRD)
@@ -71,7 +74,7 @@ run_multiboot:
mov %ax, %fs
/* ES = mmap_addr */
- mov %eax, %fs:0x48
+ mov %fs:48, %eax
shr $4, %eax
mov %ax, %es
--
1.6.5.2
Adam
--
Adam a...@os.inf.tu-dresden.de
Lackorzynski http://os.inf.tu-dresden.de/~adam/
