openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

bios: disable processor SSDT generation. Fixes high idle load on 

x86/x86-64.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4270 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-04-27 23:46:00 +00:00
parent aa92310171
commit e6e514c529
2 changed files with 67 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

BIN
pc-bios/bios.bin
View File

Binary file not shown.

111
pc-bios/bios.diff
View File

@ -1,14 +1,14 @@
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");
retrieving revision 1.207
diff -u -d -p -r1.207 rombios.c
--- rombios.c 21 Apr 2008 14:22:01 -0000 1.207
+++ rombios.c 27 Apr 2008 23:40:19 -0000
@@ -4404,22 +4404,25 @@ 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;
@ -24,7 +24,7 @@ diff -u -d -p -r1.205 rombios.c
- 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);
@ -32,22 +32,22 @@ diff -u -d -p -r1.205 rombios.c
- 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)
@@ -4432,7 +4435,9 @@ 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
@@ -4506,11 +4511,18 @@ 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);
@ -64,7 +64,7 @@ diff -u -d -p -r1.205 rombios.c
regs.u.r32.ebx = 1;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4510,7 +4522,7 @@ ASM_END
@@ -4519,7 +4531,7 @@ ASM_END
break;
case 1:
set_e820_range(ES, regs.u.r16.di,
@ -73,7 +73,7 @@ diff -u -d -p -r1.205 rombios.c
regs.u.r32.ebx = 2;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4519,7 +4531,7 @@ ASM_END
@@ -4528,7 +4540,7 @@ ASM_END
break;
case 2:
set_e820_range(ES, regs.u.r16.di,
@ -82,16 +82,16 @@ diff -u -d -p -r1.205 rombios.c
regs.u.r32.ebx = 3;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4529,7 +4541,7 @@ ASM_END
case 3:
@@ -4539,7 +4551,7 @@ ASM_END
#if BX_ROMBIOS32
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
#else
set_e820_range(ES, regs.u.r16.di,
@@ -4555,7 +4567,7 @@ ASM_END
case 4:
set_e820_range(ES, regs.u.r16.di,
extended_memory_size - ACPI_DATA_SIZE,
@ -100,7 +100,7 @@ diff -u -d -p -r1.205 rombios.c
regs.u.r32.ebx = 5;
regs.u.r32.eax = 0x534D4150;
regs.u.r32.ecx = 0x14;
@@ -4549,7 +4561,20 @@ ASM_END
@@ -4565,7 +4577,20 @@ ASM_END
case 5:
/* 256KB BIOS area at the end of 4 GB */
set_e820_range(ES, regs.u.r16.di,
@ -128,7 +128,7 @@ 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 10 Apr 2008 09:47:48 -0000
+++ rombios.h 27 Apr 2008 23:40:19 -0000
@@ -19,7 +19,7 @@
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
@ -141,11 +141,11 @@ diff -u -d -p -r1.6 rombios.h
Index: rombios32.c
===================================================================
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 10 Apr 2008 09:47:48 -0000
@@ -477,7 +477,12 @@ void smp_probe(void)
retrieving revision 1.26
diff -u -d -p -r1.26 rombios32.c
--- rombios32.c 8 Apr 2008 16:41:18 -0000 1.26
+++ rombios32.c 27 Apr 2008 23:40:19 -0000
@@ -478,7 +478,12 @@ void smp_probe(void)
sipi_vector = AP_BOOT_ADDR >> 12;
writel(APIC_BASE + APIC_ICR_LOW, 0x000C4600 | sipi_vector);
@ -158,19 +158,42 @@ diff -u -d -p -r1.24 rombios32.c
smp_cpus = readw((void *)CPU_COUNT_ADDR);
}
Index: rombios32start.S
===================================================================
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 10 Apr 2008 09:47:48 -0000
@@ -42,7 +42,7 @@ _start:
smp_ap_boot_code_start:
xor %ax, %ax
mov %ax, %ds
- incw CPU_COUNT_ADDR
+ lock incw CPU_COUNT_ADDR
1:
hlt
jmp 1b
@@ -1081,7 +1086,7 @@ struct rsdp_descriptor /* Root S
struct rsdt_descriptor_rev1
{
ACPI_TABLE_HEADER_DEF /* ACPI common table header */
- uint32_t table_offset_entry [3]; /* Array of pointers to other */
+ uint32_t table_offset_entry [2]; /* Array of pointers to other */
/* ACPI tables */
};
@@ -1335,8 +1340,8 @@ void acpi_bios_init(void)
struct fadt_descriptor_rev1 *fadt;
struct facs_descriptor_rev1 *facs;
struct multiple_apic_table *madt;
- uint8_t *dsdt, *ssdt;
- uint32_t base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr, ssdt_addr;
+ uint8_t *dsdt;
+ uint32_t base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr;
uint32_t acpi_tables_size, madt_addr, madt_size;
int i;
@@ -1370,10 +1375,6 @@ void acpi_bios_init(void)
dsdt = (void *)(addr);
addr += sizeof(AmlCode);
- ssdt_addr = addr;
- ssdt = (void *)(addr);
- addr += acpi_build_processor_ssdt(ssdt);
-
addr = (addr + 7) & ~7;
madt_addr = addr;
madt_size = sizeof(*madt) +
@@ -1403,7 +1404,6 @@ void acpi_bios_init(void)
memset(rsdt, 0, sizeof(*rsdt));
rsdt->table_offset_entry[0] = cpu_to_le32(fadt_addr);
rsdt->table_offset_entry[1] = cpu_to_le32(madt_addr);
- rsdt->table_offset_entry[2] = cpu_to_le32(ssdt_addr);
acpi_build_table_header((struct acpi_table_header *)rsdt,
"RSDT", sizeof(*rsdt), 1);