mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 02:01:24 +01:00
hvmloader: ROMBIOS must POST in big real mode, since it supports PMM,
and hence Option ROMs can expect noi segment limit checks. Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
This commit is contained in:
Keir Fraser committed
1 parent
2fa8c71b9f
commit
c2901a5cc4
2 files changed
+4
-4
No files matched your search
@@ -88,8 +88,8 @@ asm (
|
||||
" .align 8 \n"
|
||||
"gdt: \n"
|
||||
" .quad 0x0000000000000000 \n"
|
||||
" .quad 0x00009a000000ffff \n" /* Ring 0 code, base 0 limit 0xffff */
|
||||
" .quad 0x000092000000ffff \n" /* Ring 0 data, base 0 limit 0xffff */
|
||||
" .quad 0x008f9a000000ffff \n" /* Ring 0 16b code, base 0 limit 4G */
|
||||
" .quad 0x008f92000000ffff \n" /* Ring 0 16b data, base 0 limit 4G */
|
||||
"gdt_end: \n"
|
||||
" \n"
|
||||
" .bss \n"
|
||||
|
||||
@@ -56,13 +56,13 @@ gdt_entry_pm_32bit_cs:
|
||||
.byte 0x00, 0x9b, 0xcf, 0x00
|
||||
gdt_entry_pm_16bit_cs:
|
||||
.word 0xffff, 0x0000
|
||||
.byte REAL_MODE_CODE_OFFSET >> 16, 0x9b, 0x0, 0x0
|
||||
.byte REAL_MODE_CODE_OFFSET >> 16, 0x9b, 0x8f, 0x0
|
||||
gdt_entry_pm_32bit_ds:
|
||||
.word 0xffff, 0x0000
|
||||
.byte 0x0, 0x93, 0xcf, 0x0
|
||||
gdt_entry_pm_16bit_ds:
|
||||
.word 0xffff, 0x0000
|
||||
.byte 0x0, 0x93, 0x0, 0x0
|
||||
.byte 0x0, 0x93, 0x8f, 0x0
|
||||
gdt_entry_end:
|
||||
|
||||
protmode_gdtdesc:
|
||||
|
||||