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epia-m support

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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1655 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Ronald G. Minnich
2004-10-06 17:33:54 +00:00
parent 4fa89208a1
commit 02fa3b2743
32 changed files with 1945 additions and 405 deletions
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67
src/arch/i386/boot/acpi.c
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@@ -3,6 +3,10 @@
* written by Stefan Reinauer <stepan@openbios.org>
* (C) 2004 SUSE LINUX AG
*/
/* ACPI FADT, FACS, and DSDT table support added by
* Nick Barker <nick.barker9@btinternet.com>, and those portions
* (C) Copyright 2004 Nick Barker
*/
#include <console/console.h>
#include <string.h>
@@ -22,7 +26,15 @@
#define OEM_ID "LXBIOS"
#define ASLC "NONE"
static u8 acpi_checksum(u8 *table, u32 length)
// FIX ME - define needs declaring / setting in Config files
#define HAVE_ACPI_FADT
#ifdef HAVE_ACPI_FADT
extern unsigned char AmlCode[];
#endif
u8 acpi_checksum(u8 *table, u32 length)
{
u8 ret=0;
while (length--) {
@@ -43,13 +55,15 @@ static void acpi_add_table(acpi_rsdt_t *rsdt, void *table)
for (i=0; i<8; i++) {
if(rsdt->entry[i]==0) {
rsdt->entry[i]=(u32)table;
/* fix length to stop kernel winging about invalid entries */
rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
/* fix checksum */
/* hope this won't get optimized away */
rsdt->header.checksum=0;
rsdt->header.checksum=acpi_checksum((u8 *)rsdt,
rsdt->header.length);
printk_debug("ACPI: added table %d/8\n",i+1);
printk_debug("ACPI: added table %d/8 Length now %d\n",i+1,rsdt->header.length);
return;
}
}
@@ -181,6 +195,22 @@ static void acpi_create_hpet(acpi_hpet_t *hpet)
header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
}
static void acpi_create_facs(acpi_facs_t *facs)
{
memset( (void *)facs,0, sizeof(acpi_facs_t));
memcpy(facs->signature,"FACS",4);
facs->length = sizeof(acpi_facs_t);
facs->hardware_signature = 0;
facs->firmware_waking_vector = 0;
facs->global_lock = 0;
facs->flags = 0;
facs->x_firmware_waking_vector_l = 0;
facs->x_firmware_waking_vector_h = 0;
facs->version = 1;
}
static void acpi_write_rsdt(acpi_rsdt_t *rsdt)
{
acpi_header_t *header=&(rsdt->header);
@@ -222,6 +252,9 @@ unsigned long write_acpi_tables(unsigned long start)
acpi_rsdt_t *rsdt;
acpi_hpet_t *hpet;
acpi_madt_t *madt;
acpi_fadt_t *fadt;
acpi_facs_t *facs;
acpi_header_t *dsdt;
/* Align ACPI tables to 16byte */
start = ( start + 0x0f ) & -0x10;
@@ -244,7 +277,6 @@ unsigned long write_acpi_tables(unsigned long start)
/*
* We explicitly add these tables later on:
*/
#define HAVE_ACPI_HPET
#ifdef HAVE_ACPI_HPET
printk_debug("ACPI: * HPET\n");
@@ -263,6 +295,35 @@ unsigned long write_acpi_tables(unsigned long start)
#endif
#ifdef HAVE_ACPI_FADT
printk_debug("ACPI: * FACS\n");
facs = (acpi_facs_t *) current;
current += sizeof(acpi_facs_t);
acpi_create_facs(facs);
dsdt = (acpi_header_t *)current;
current += ((acpi_header_t *)AmlCode)->length;
memcpy((void *)dsdt,(void *)AmlCode, ((acpi_header_t *)AmlCode)->length);
dsdt->checksum = 0; // don't trust intel iasl compiler to get this right
dsdt->checksum = acpi_checksum(dsdt,dsdt->length);
printk_debug("ACPI: * DSDT @ %08x Length %x\n",dsdt,dsdt->length);
printk_debug("ACPI: * FADT\n");
fadt = (acpi_fadt_t *) current;
current += sizeof(acpi_fadt_t);
acpi_create_fadt(fadt,facs,dsdt);
acpi_add_table(rsdt,fadt);
#endif
printk_info("ACPI: done.\n");
return current;
}