GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ACPI: Add function for writing _CST tables 

Change-Id: I4e16a0d37717c56a3529f9f9fdb05efec1d93f99
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/312
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Sven Schnelle 2011-10-21 21:46:47 +02:00
parent d17f3d7019
commit 0b86c76cfc
2 changed files with 70 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
src/arch/x86/boot/acpigen.c
View File

@ -374,6 +374,41 @@ int acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype)
return len + lenh;
}
static int acpigen_write_CST_package_entry(struct cst_entry *entry)
{
int len, len0;
char *start, *end;
len0 = acpigen_write_package(4);
len = acpigen_write_resourcetemplate_header();
start = acpigen_get_current();
acpigen_write_register(entry->type, entry->width, entry->offset, entry->addrsize, entry->address);
end = acpigen_get_current();
len += end-start;
len += acpigen_write_resourcetemplate_footer(len);
len += len0;
len += acpigen_write_dword(entry->ctype);
len += acpigen_write_dword(entry->latency);
len += acpigen_write_dword(entry->power);
acpigen_patch_len(len - 1);
return len;
}
int acpigen_write_CST_package(struct cst_entry *entry, int nentries)
{
int len, lenh, lenp, i;
lenh = acpigen_write_name("_CST");
lenp = acpigen_write_package(nentries+1);
len = acpigen_write_dword(nentries);
for (i = 0; i < nentries; i++)
len += acpigen_write_CST_package_entry(entry + i);
len += lenp;
acpigen_patch_len(len - 1);
return len + lenh;
}
int acpigen_write_mem32fixed(int readwrite, u32 base, u32 size)
{
/*
@ -399,6 +434,28 @@ int acpigen_write_mem32fixed(int readwrite, u32 base, u32 size)
return 12;
}
int acpigen_write_register(int type, int width, int offset, int addrsize, u64 address)
{
acpigen_emit_byte(0x82);
/* Byte 1+2: length (0x000c) */
acpigen_emit_byte(0x0c);
acpigen_emit_byte(0x00);
/* bit1-7 are ignored */
acpigen_emit_byte(type); /* FFixedHW */
acpigen_emit_byte(width); /* register width */
acpigen_emit_byte(offset); /* register offset */
acpigen_emit_byte(addrsize); /* register address size */
acpigen_emit_byte(address & 0xff); /* register address 0-7 */
acpigen_emit_byte((address >> 8) & 0xff); /* register address 8-15 */
acpigen_emit_byte((address >> 16) & 0xff); /* register address 16-23 */
acpigen_emit_byte((address >> 24) & 0xff); /* register address 24-31 */
acpigen_emit_byte((address >> 32) & 0xff); /* register address 32-39 */
acpigen_emit_byte((address >> 40) & 0xff); /* register address 40-47 */
acpigen_emit_byte((address >> 48) & 0xff); /* register address 48-55 */
acpigen_emit_byte((address >> 56) & 0xff); /* register address 56-63 */
return 15;
}
int acpigen_write_io16(u16 min, u16 max, u8 align, u8 len, u8 decode16)
{
/*

13
src/arch/x86/include/arch/acpigen.h
View File

@ -24,6 +24,17 @@
#include <stdlib.h>
#include <stdint.h>
struct cst_entry {
int type;
int width;
int offset;
int addrsize;
u64 address;
int ctype;
int latency;
int power;
};
void acpigen_patch_len(int len);
void acpigen_set_current(char *curr);
char *acpigen_get_current(void);
@ -45,9 +56,11 @@ int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat
u32 control, u32 status);
typedef enum { SW_ALL=0xfc, SW_ANY=0xfd, HW_ALL=0xfe } PSD_coord;
int acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype);
int acpigen_write_CST_package(struct cst_entry *entry, int nentries);
int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len);
int acpigen_write_mem32fixed(int readwrite, u32 base, u32 size);
int acpigen_write_io16(u16 min, u16 max, u8 align, u8 len, u8 decode16);
int acpigen_write_register(int type, int width, int offset, int addrsize, u64 address);
int acpigen_write_resourcetemplate_header(void);
int acpigen_write_resourcetemplate_footer(int len);
int acpigen_write_mainboard_resource_template(void);