From 107654552cb442b8b95c1f3ebc18dd64c6c0f0d5 Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Wed, 3 May 2006 21:24:55 +0000
Subject: [PATCH] more correct e820 ranges for ACPI compatibility

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1901 c046a42c-6fe2-441c-8c8c-71466251a162
---
 pc-bios/bios.bin  | Bin 65536 -> 65536 bytes
 pc-bios/bios.diff | 146 +++++++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 138 insertions(+), 8 deletions(-)

diff --git a/pc-bios/bios.bin b/pc-bios/bios.bin
index 537851abbd2efdac93913844455002989b16515c..64be517b248ec359e109217b9021517050ec30e3 100644
GIT binary patch
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DJxX!+

diff --git a/pc-bios/bios.diff b/pc-bios/bios.diff
index 647025b..e875927 100644
--- a/pc-bios/bios.diff
+++ b/pc-bios/bios.diff
@@ -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
-- 
2.7.4