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Commit acb98efb authored by Aurelien Jarno's avatar Aurelien Jarno
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bios: add support to memory above the pci hole 

(Izik Eidus)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4237 c046a42c-6fe2-441c-8c8c-71466251a162
parent 4e14008f
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Index: rombios.c
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/rombios.c,v
retrieving revision 1.205
diff -u -d -p -r1.205 rombios.c
--- rombios.c 21 Mar 2008 19:06:31 -0000 1.205
+++ rombios.c 10 Apr 2008 09:47:48 -0000
@@ -4395,22 +4395,25 @@ BX_DEBUG_INT15("case default:\n");
#endif // BX_USE_PS2_MOUSE
-void set_e820_range(ES, DI, start, end, type)
+void set_e820_range(ES, DI, start, end, extra_start, extra_end, type)
Bit16u ES;
Bit16u DI;
Bit32u start;
Bit32u end;
+ Bit8u extra_start;
+ Bit8u extra_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+4, extra_start);
write_word(ES, DI+6, 0x00);
end -= start;
+ extra_end -= extra_start;
write_word(ES, DI+8, end);
write_word(ES, DI+10, end >> 16);
- write_word(ES, DI+12, 0x0000);
+ write_word(ES, DI+12, extra_end);
write_word(ES, DI+14, 0x0000);
write_word(ES, DI+16, type);
@@ -4423,7 +4426,9 @@ int15_function32(regs, ES, DS, FLAGS)
Bit16u ES, DS, FLAGS;
{
Bit32u extended_memory_size=0; // 64bits long
+ Bit32u extra_lowbits_memory_size=0;
Bit16u CX,DX;
+ Bit8u extra_highbits_memory_size=0;
BX_DEBUG_INT15("int15 AX=%04x\n",regs.u.r16.ax);
@@ -4497,11 +4502,18 @@ ASM_END
extended_memory_size += (1L * 1024 * 1024);
}
+ extra_lowbits_memory_size = inb_cmos(0x5c);
+ extra_lowbits_memory_size <<= 8;
+ extra_lowbits_memory_size |= inb_cmos(0x5b);
+ extra_lowbits_memory_size *= 64;
+ extra_lowbits_memory_size *= 1024;
+ extra_highbits_memory_size = inb_cmos(0x5d);
+
switch(regs.u.r16.bx)
{
case 0:
set_e820_range(ES, regs.u.r16.di,
- 0x0000000L, 0x0009fc00L, 1);
+ 0x0000000L, 0x0009fc00L, 0, 0, 1);
regs.u.r32.ebx = 1;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4510,7 +4522,7 @@ ASM_END
break;
case 1:
set_e820_range(ES, regs.u.r16.di,
- 0x0009fc00L, 0x000a0000L, 2);
+ 0x0009fc00L, 0x000a0000L, 0, 0, 2);
regs.u.r32.ebx = 2;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4519,7 +4531,7 @@ ASM_END
break;
case 2:
set_e820_range(ES, regs.u.r16.di,
- 0x000e8000L, 0x00100000L, 2);
+ 0x000e8000L, 0x00100000L, 0, 0, 2);
regs.u.r32.ebx = 3;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4529,7 +4541,7 @@ ASM_END
case 3:
set_e820_range(ES, regs.u.r16.di,
0x00100000L,
- extended_memory_size - ACPI_DATA_SIZE, 1);
+ extended_memory_size - ACPI_DATA_SIZE ,0, 0, 1);
regs.u.r32.ebx = 4;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4539,7 +4551,7 @@ ASM_END
case 4:
set_e820_range(ES, regs.u.r16.di,
extended_memory_size - ACPI_DATA_SIZE,
- extended_memory_size, 3); // ACPI RAM
+ extended_memory_size ,0, 0, 3); // ACPI RAM
regs.u.r32.ebx = 5;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4549,7 +4561,20 @@ ASM_END
case 5:
/* 256KB BIOS area at the end of 4 GB */
set_e820_range(ES, regs.u.r16.di,
- 0xfffc0000L, 0x00000000L, 2);
+ 0xfffc0000L, 0x00000000L ,0, 0, 2);
+ if (extra_highbits_memory_size || extra_lowbits_memory_size)
+ regs.u.r32.ebx = 6;
+ else
+ regs.u.r32.ebx = 0;
+ regs.u.r32.eax = 0x534D4150;
+ regs.u.r32.ecx = 0x14;
+ CLEAR_CF();
+ return;
+ case 6:
+ /* Maping of memory above 4 GB */
+ set_e820_range(ES, regs.u.r16.di, 0x00000000L,
+ extra_lowbits_memory_size, 1, extra_highbits_memory_size
+ + 1, 1);
regs.u.r32.ebx = 0;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
Index: rombios.h
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/rombios.h,v
retrieving revision 1.6
diff -u -d -p -r1.6 rombios.h
--- rombios.h 26 Jan 2008 09:15:27 -0000 1.6
+++ rombios.h 28 Mar 2008 10:22:04 -0000
+++ rombios.h 10 Apr 2008 09:47:48 -0000
@@ -19,7 +19,7 @@
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
......@@ -20,7 +144,7 @@ RCS file: /cvsroot/bochs/bochs/bios/rombios32.c,v
retrieving revision 1.24
diff -u -d -p -r1.24 rombios32.c
--- rombios32.c 6 Mar 2008 20:18:20 -0000 1.24
+++ rombios32.c 28 Mar 2008 10:22:04 -0000
+++ rombios32.c 10 Apr 2008 09:47:48 -0000
@@ -477,7 +477,12 @@ void smp_probe(void)
sipi_vector = AP_BOOT_ADDR >> 12;
writel(APIC_BASE + APIC_ICR_LOW, 0x000C4600 | sipi_vector);
......@@ -40,7 +164,7 @@ RCS file: /cvsroot/bochs/bochs/bios/rombios32start.S,v
retrieving revision 1.4
diff -u -d -p -r1.4 rombios32start.S
--- rombios32start.S 26 Jan 2008 09:15:27 -0000 1.4
+++ rombios32start.S 28 Mar 2008 10:22:04 -0000
+++ rombios32start.S 10 Apr 2008 09:47:48 -0000
@@ -42,7 +42,7 @@ _start:
smp_ap_boot_code_start:
xor %ax, %ax
......
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