Sebastian Herbszt wrote:
Akio Takebe wrote:
Hi,
+ /* jump to BCV function entry pointer */
+ mov bp, sp ;; Call ROM BCV routine using seg:off on stack
+ db 0xff ;; call_far ss:[bp+0]
+ db 0x5e
+ db 0
+ cli ;; In case expansion ROM BIOS turns IF on
+ add sp, #2 ;; Pop offset value
+ pop cx ;; Pop seg value (restore CX)
+ ja no_bev
ja? not jmp?
Oops. yes jmp.
Can you please resend a fixed version?
Thanks
Sebastian
Sorry, and thank you for your review. I updeted our patch.
Signed-off-by: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>
Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
Best Regards,
Akio Takebe
Index: bios/rombios.c
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/rombios.c,v
retrieving revision 1.222
diff -u -r1.222 rombios.c
--- bios/rombios.c 15 Dec 2008 06:05:52 -0000 1.222
+++ bios/rombios.c 18 Dec 2008 06:15:52 -0000
@@ -10251,6 +10251,30 @@
mov ax, 2[bx]
cmp ax, #0x506e
jne no_bev
+
+ mov ax, 0x16[bx] ;; 0x16 is the offset of Boot Connection Vector
+ cmp ax, #0x0000
+ je no_bcv
+
+ ;; Option ROM has BCV. Run it now.
+ push cx ;; Push seg
+ push ax ;; Push offset
+
+ ;; Point ES:DI at "$PnP", which tells the ROM that we are a PnP BIOS.
+ mov bx, #0xf000
+ mov es, bx
+ lea di, pnp_string
+ /* jump to BCV function entry pointer */
+ mov bp, sp ;; Call ROM BCV routine using seg:off on stack
+ db 0xff ;; call_far ss:[bp+0]
+ db 0x5e
+ db 0
+ cli ;; In case expansion ROM BIOS turns IF on
+ add sp, #2 ;; Pop offset value
+ pop cx ;; Pop seg value (restore CX)
+ jmp no_bev
+
+no_bcv:
mov ax, 0x1a[bx] ;; 0x1A is also the offset into the expansion header of...
cmp ax, #0x0000 ;; the Bootstrap Entry Vector, or zero if there is none.
je no_bev
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