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more correct e820 ranges for ACPI compatibility

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1901 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-05-03 21:24:55 +00:00
parent ceb5caaf18
commit 107654552c
2 changed files with 138 additions and 8 deletions
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pc-bios/bios.bin
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pc-bios/bios.diff
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@ -4,7 +4,7 @@ RCS file: /cvsroot/bochs/bochs/bios/apmbios.S,v
retrieving revision 1.4
diff -u -w -r1.4 apmbios.S
--- apmbios.S 26 Dec 2005 10:35:51 -0000 1.4
+++ apmbios.S 28 Apr 2006 22:41:19 -0000
+++ apmbios.S 3 May 2006 21:22:46 -0000
@@ -225,6 +225,7 @@
APMSYM(05):
cmp al, #0x05
@ -19,7 +19,7 @@ RCS file: /cvsroot/bochs/bochs/bios/rombios.c,v
retrieving revision 1.160
diff -u -w -r1.160 rombios.c
--- rombios.c 25 Jan 2006 17:51:49 -0000 1.160
+++ rombios.c 28 Apr 2006 22:41:21 -0000
+++ rombios.c 3 May 2006 21:22:48 -0000
@@ -1816,6 +1816,7 @@
{
printf(BX_APPNAME" BIOS - build: %s\n%s\nOptions: ",
@ -38,7 +38,137 @@ diff -u -w -r1.160 rombios.c
}
//--------------------------------------------------------------------------
@@ -8713,6 +8717,7 @@
@@ -3999,6 +4003,29 @@
}
#endif
+
+void set_e820_range(ES, DI, start, end, type)
+ Bit16u ES;
+ Bit16u DI;
+ Bit32u start;
+ Bit32u end;
+ Bit16u type;
+{
+ write_word(ES, DI, start);
+ write_word(ES, DI+2, start >> 16);
+ write_word(ES, DI+4, 0x00);
+ write_word(ES, DI+6, 0x00);
+
+ end -= start;
+ write_word(ES, DI+8, end);
+ write_word(ES, DI+10, end >> 16);
+ write_word(ES, DI+12, 0x0000);
+ write_word(ES, DI+14, 0x0000);
+
+ write_word(ES, DI+16, type);
+ write_word(ES, DI+18, 0x0);
+}
+
void
int15_function32(regs, ES, DS, FLAGS)
pushad_regs_t regs; // REGS pushed via pushad
@@ -4063,19 +4090,8 @@
switch(regs.u.r16.bx)
{
case 0:
- write_word(ES, regs.u.r16.di, 0x00);
- write_word(ES, regs.u.r16.di+2, 0x00);
- write_word(ES, regs.u.r16.di+4, 0x00);
- write_word(ES, regs.u.r16.di+6, 0x00);
-
- write_word(ES, regs.u.r16.di+8, 0xFC00);
- write_word(ES, regs.u.r16.di+10, 0x0009);
- write_word(ES, regs.u.r16.di+12, 0x0000);
- write_word(ES, regs.u.r16.di+14, 0x0000);
-
- write_word(ES, regs.u.r16.di+16, 0x1);
- write_word(ES, regs.u.r16.di+18, 0x0);
-
+ set_e820_range(ES, regs.u.r16.di,
+ 0x0000000L, 0x0009fc00L, 1);
regs.u.r32.ebx = 1;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4083,6 +4099,24 @@
return;
break;
case 1:
+ set_e820_range(ES, regs.u.r16.di,
+ 0x0009fc00L, 0x000a0000L, 2);
+ regs.u.r32.ebx = 2;
+ regs.u.r32.eax = 0x534D4150;
+ regs.u.r32.ecx = 0x14;
+ CLEAR_CF();
+ return;
+ break;
+ case 2:
+ set_e820_range(ES, regs.u.r16.di,
+ 0x000e8000L, 0x00100000L, 2);
+ regs.u.r32.ebx = 3;
+ regs.u.r32.eax = 0x534D4150;
+ regs.u.r32.ecx = 0x14;
+ CLEAR_CF();
+ return;
+ break;
+ case 3:
extended_memory_size = inb_cmos(0x35);
extended_memory_size <<= 8;
extended_memory_size |= inb_cmos(0x34);
@@ -4092,9 +4126,9 @@
extended_memory_size = 0x3bc000; // everything after this is reserved memory until we get to 0x100000000
}
extended_memory_size *= 1024;
- extended_memory_size += 15728640; // make up for the 16mb of memory that is chopped off
+ extended_memory_size += (16L * 1024 * 1024);
- if(extended_memory_size <= 15728640)
+ if(extended_memory_size <= (16L * 1024 * 1024))
{
extended_memory_size = inb_cmos(0x31);
extended_memory_size <<= 8;
@@ -4102,28 +4136,23 @@
extended_memory_size *= 1024;
}
- write_word(ES, regs.u.r16.di, 0x0000);
- write_word(ES, regs.u.r16.di+2, 0x0010);
- write_word(ES, regs.u.r16.di+4, 0x0000);
- write_word(ES, regs.u.r16.di+6, 0x0000);
-
- write_word(ES, regs.u.r16.di+8, extended_memory_size);
- extended_memory_size >>= 16;
- write_word(ES, regs.u.r16.di+10, extended_memory_size);
- extended_memory_size >>= 16;
- write_word(ES, regs.u.r16.di+12, extended_memory_size);
- extended_memory_size >>= 16;
- write_word(ES, regs.u.r16.di+14, extended_memory_size);
-
- write_word(ES, regs.u.r16.di+16, 0x1);
- write_word(ES, regs.u.r16.di+18, 0x0);
-
- regs.u.r32.ebx = 0;
+ set_e820_range(ES, regs.u.r16.di,
+ 0x00100000L, extended_memory_size, 1);
+ regs.u.r32.ebx = 4;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
CLEAR_CF();
return;
break;
+ case 4:
+ /* 256KB BIOS area at the end of 4 GB */
+ set_e820_range(ES, regs.u.r16.di,
+ 0xfffc0000L, 0x00000000L, 2);
+ regs.u.r32.ebx = 0;
+ regs.u.r32.eax = 0x534D4150;
+ regs.u.r32.ecx = 0x14;
+ CLEAR_CF();
+ return;
default: /* AX=E820, DX=534D4150, BX unrecognized */
goto int15_unimplemented;
break;
@@ -8713,6 +8742,7 @@
mov al, #0x80
bios32_end:
popf
@ -46,7 +176,7 @@ diff -u -w -r1.160 rombios.c
retf
.align 16
@@ -8823,17 +8828,17 @@
@@ -8823,17 +8853,17 @@
pci_pro_fail:
pop edi
pop esi
@ -66,7 +196,7 @@ diff -u -w -r1.160 rombios.c
retf
pci_pro_select_reg:
@@ -8971,7 +8976,7 @@
@@ -8971,7 +9001,7 @@
jmp pci_real_ok
pci_real_f0d: ;; write configuration dword
cmp al, #0x0d
@ -75,7 +205,7 @@ diff -u -w -r1.160 rombios.c
call pci_real_select_reg
push dx
mov dx, #0x0cfc
@@ -8979,6 +8984,46 @@
@@ -8979,6 +9009,46 @@
out dx, eax
pop dx
jmp pci_real_ok
@ -122,7 +252,7 @@ diff -u -w -r1.160 rombios.c
pci_real_unknown:
mov ah, #0x81
pci_real_fail:
@@ -9019,6 +9064,7 @@
@@ -9019,6 +9089,7 @@
dw 0,0 ;; Miniport data
db 0,0,0,0,0,0,0,0,0,0,0 ;; reserved
db 0x07 ;; checksum
@ -130,7 +260,7 @@ diff -u -w -r1.160 rombios.c
;; first slot entry PCI-to-ISA (embedded)
db 0 ;; pci bus number
db 0x08 ;; pci device number (bit 7-3)
@@ -9097,6 +9143,7 @@
@@ -9097,6 +9168,7 @@
dw 0xdef8 ;; IRQ bitmap INTD#
db 5 ;; physical slot (0 = embedded)
db 0 ;; reserved