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Following patch adds dynamically generated P-States infrastructure as well as 

M2V-MX SE as example how to do that. It is based on AMD code and mine code for
ACPI generation.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3946 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Rudolf Marek 2009-02-14 15:40:23 +00:00
parent 66948f7e8c
commit f997b5554a
5 changed files with 108 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
src/arch/i386/boot/acpigen.c
View File

@ -136,3 +136,103 @@ int acpigen_write_scope(char *name)
len = acpigen_write_len_f();
return len + acpigen_emit_stream(name, strlen(name)) + 1;
}
int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len)
{
/*
Processor (\_PR.CPUcpuindex, cpuindex, pblock_addr, pblock_len)
{
*/
char pscope[16];
int len;
/* processor op */
acpigen_emit_byte(0x5b);
acpigen_emit_byte(0x83);
len = acpigen_write_len_f();
sprintf(pscope, "\\._PR_CPU%x", (unsigned int) cpuindex);
len += acpigen_emit_stream(pscope, strlen(pscope));
acpigen_emit_byte(cpuindex);
acpigen_emit_byte(pblock_addr & 0xff);
acpigen_emit_byte((pblock_addr >> 8) & 0xff);
acpigen_emit_byte((pblock_addr >> 16) & 0xff);
acpigen_emit_byte((pblock_addr >> 24) & 0xff);
acpigen_emit_byte(pblock_len);
return 6 + 2 + len;
}
int acpigen_write_empty_PCT(void)
{
/*
Name (_PCT, Package (0x02)
{
ResourceTemplate ()
{
Register (FFixedHW,
0x00, // Bit Width
0x00, // Bit Offset
0x0000000000000000, // Address
,)
},
ResourceTemplate ()
{
Register (FFixedHW,
0x00, // Bit Width
0x00, // Bit Offset
0x0000000000000000, // Address
,)
}
})
*/
static char stream[] = {
0x08, 0x5F, 0x50, 0x43, 0x54, 0x12, 0x2C, /* 00000030 "0._PCT.," */
0x02, 0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, /* 00000038 "........" */
0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000040 "........" */
0x00, 0x00, 0x00, 0x00, 0x79, 0x00, 0x11, 0x14, /* 00000048 "....y..." */
0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, 0x00, 0x00, /* 00000050 "........" */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000058 "........" */
0x00, 0x79, 0x00
};
return acpigen_emit_stream(stream, ARRAY_SIZE(stream));
}
/* generates a func with max supported P states */
int acpigen_write_PPC(u8 nr)
{
/*
Method (_PPC, 0, NotSerialized)
{
Return (nr)
}
*/
int len;
/* method op */
acpigen_emit_byte(0x14);
len = acpigen_write_len_f();
len += acpigen_emit_stream("_PPC", 4);
/* no fnarg */
acpigen_emit_byte(0x00);
/* return */
acpigen_emit_byte(0xa4);
/* arg */
len += acpigen_write_byte(nr);
acpigen_patch_len(len - 1);
return len + 3;
}
int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat,
u32 control, u32 status)
{
int len;
len = acpigen_write_package(6);
len += acpigen_write_dword(coreFreq);
len += acpigen_write_dword(power);
len += acpigen_write_dword(transLat);
len += acpigen_write_dword(busmLat);
len += acpigen_write_dword(control);
len += acpigen_write_dword(status);
//pkglen without the len opcode
acpigen_patch_len(len - 1);
return len;
}

5
src/arch/i386/include/arch/acpigen.h
View File

@ -34,4 +34,9 @@ int acpigen_write_name(char *name);
int acpigen_write_name_dword(char *name, uint32_t val);
int acpigen_write_name_byte(char *name, uint8_t val);
int acpigen_write_scope(char *name);
int acpigen_write_PPC(u8 nr);
int acpigen_write_empty_PCT(void);
int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat,
u32 control, u32 status);
int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len);
#endif

1
src/cpu/amd/model_fxx/Config.lb
View File

@ -20,3 +20,4 @@ driver model_fxx_init.o
object apic_timer.o
object model_fxx_update_microcode.o
object processor_name.o
object powernow_acpi.o

3
src/mainboard/asus/m2v-mx_se/acpi_tables.c
View File

@ -31,6 +31,7 @@
#include <../../../southbridge/via/vt8237r/vt8237r.h>
#include <../../../southbridge/via/k8t890/k8t890.h>
#include <../../../northbridge/amd/amdk8/amdk8_acpi.h>
#include <cpu/amd/model_fxx_powernow.h>
extern unsigned char AmlCode[];
@ -83,7 +84,7 @@ unsigned long acpi_fill_madt(unsigned long current)
unsigned long acpi_fill_ssdt_generator(unsigned long current, char *oem_table_id) {
k8acpi_write_vars();
/* put PSTATES generator call here */
amd_model_fxx_generate_powernow(0, 0, 0);
return (unsigned long) (acpigen_get_current());
}

8
src/mainboard/asus/m2v-mx_se/dsdt.asl
View File

@ -24,14 +24,6 @@ DefinitionBlock ("DSDT.aml", "DSDT", 1, "LXBIOS", "LXB-DSDT", 1)
{
Include ("amdk8_util.asl")
/* Define the main processor.*/
Scope (\_PR)
{
Processor (\_PR.CPU0, 0x00, 0x000000, 0x00) {}
Processor (\_PR.CPU1, 0x01, 0x000000, 0x00) {}
}
/* For now only define 2 power states:
* - S0 which is fully on
* - S5 which is soft off