please forgive me... ;)
* initial acpi support code * fix header git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1358 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer
parent
22489894e1
commit
688b385aec
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@ -1,4 +1,5 @@
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uses HAVE_PIRQ_TABLE
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uses HAVE_ACPI_TABLES
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object boot.o
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object linuxbios_table.o
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@ -6,4 +7,7 @@ object tables.o
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if HAVE_PIRQ_TABLE
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object pirq_routing.o
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end
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if HAVE_ACPI_TABLES
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object acpi.o
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end
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@ -0,0 +1,151 @@
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/*
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* LinuxBIOS ACPI Table support
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* written by Stefan Reinauer <stepan@openbios.org>
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* (C) 2004 SUSE LINUX AG
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*/
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#include <console/console.h>
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#include <string.h>
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#include <arch/acpi.h>
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#define RSDP_SIG "RSD PTR " /* RSDT Pointer signature */
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#define RSDP_NAME "RSDP"
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#define RSDT_NAME "RSDT"
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#define HPET_NAME "HPET"
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#define RSDT_TABLE " RSDT "
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#define HPET_TABLE "AMD64 "
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#define OEM_ID "LXBIOS"
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#define ASLC "NONE"
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static u8 acpi_checksum(u8 *table, u32 length)
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{
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u8 ret=0;
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while (length--) {
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ret += *table;
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table++;
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}
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return ret;
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}
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static void acpi_add_table(acpi_rsdt_t *rsdt, void *table)
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{
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int i;
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for (i=0; i<8; i++) {
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if(rsdt->entry[i]==0) {
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rsdt->entry[i]=(u32)table;
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/* fix checksum */
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/* hope this won't get optimized away */
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rsdt->header.checksum=0;
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rsdt->header.checksum=acpi_checksum((u8 *)rsdt,
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rsdt->header.length);
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printk_debug("ACPI: added table %d/8\n",i);
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return;
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}
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}
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printk_warning("ACPI: could not ACPI table. failed.\n");
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}
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static void acpi_create_hpet(acpi_hpet_t *hpet)
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{
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#define HPET_ADDR 0xfed00000ULL
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acpi_header_t *header=&(hpet->header);
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acpi_addr_t *addr=&(hpet->addr);
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/* fill out header fields */
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memcpy(header->signature, HPET_NAME, 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, HPET_TABLE, 8);
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memcpy(header->asl_compiler_id, ASLC, 4);
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header->length = sizeof(acpi_hpet_t);
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header->revision = 1;
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/* fill out HPET address */
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addr->space_id = 0; /* Memory */
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addr->bit_width = 64;
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addr->bit_offset = 0;
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addr->addrl = HPET_ADDR & 0xffffffff;
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addr->addrh = HPET_ADDR >> 32;
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hpet->id = 0x102282a0; /* AMD ? */
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hpet->number = 0;
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hpet->min_tick = 4096;
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}
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static void acpi_write_rsdt(acpi_rsdt_t *rsdt)
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{
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acpi_header_t *header=&(rsdt->header);
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/* fill out header fields */
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memcpy(header->signature, RSDT_NAME, 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, RSDT_TABLE, 8);
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memcpy(header->asl_compiler_id, ASLC, 4);
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header->length = sizeof(acpi_rsdt_t);
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header->revision = 1;
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/* fill out entries */
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// entries are filled in later, we come with an empty set.
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/* fix checksum */
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header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
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}
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static void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt)
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{
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memcpy(rsdp->signature, RSDP_SIG, 8);
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memcpy(rsdp->oem_id, OEM_ID, 6);
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rsdp->length = sizeof(acpi_rsdp_t);
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rsdp->rsdt_address = (u32)rsdt;
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rsdp->checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
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}
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unsigned long write_acpi_tables(unsigned long start)
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{
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unsigned long current = start;
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acpi_rsdp_t *rsdp;
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acpi_rsdt_t *rsdt;
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acpi_hpet_t *hpet;
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printk_info("ACPI: Writing ACPI tables at %lx...\n", start);
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/* We need at least an RSDP and an RSDT Table */
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rsdp = (acpi_rsdp_t *) current;
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current += sizeof(acpi_rsdp_t);
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rsdt = (acpi_rsdt_t *) current;
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current += sizeof(acpi_rsdt_t);
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/* clear all table memory */
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memset((void *)start, 0, current - start);
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acpi_write_rsdp(rsdp, rsdt);
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acpi_write_rsdt(rsdt);
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/*
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* We explicitly add these tables later on:
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*/
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#define HAVE_ACPI_HPET
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#ifdef HAVE_ACPI_HPET
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printk_debug("ACPI: * HPET\n");
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hpet = (acpi_hpet_t *) current;
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current += sizeof(acpi_hpet_t);
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acpi_create_hpet(hpet);
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acpi_add_table(rsdt,hpet);
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#endif
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printk_info("ACPI: done.\n");
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return current;
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}
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@ -5,6 +5,7 @@
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#include <boot/linuxbios_tables.h>
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#include <arch/pirq_routing.h>
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#include <arch/smp/mpspec.h>
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#include <arch/acpi.h>
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#include "linuxbios_table.h"
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#if CONFIG_SMP && CONFIG_MAX_PHYSICAL_CPUS && (CONFIG_MAX_PHYSICAL_CPUS < CONFIG_MAX_CPUS)
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@ -61,6 +62,10 @@ struct lb_memory *write_tables(struct mem_range *mem, unsigned long *processor_m
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if (low_table_end < 0x500) {
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low_table_end = 0x500;
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}
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/* Write ACPI tables */
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low_table_end = write_acpi_tables(low_table_end);
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/* The linuxbios table must be in 0-4K or 960K-1M */
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write_linuxbios_table(processor_map, mem,
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low_table_start, low_table_end,
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@ -0,0 +1,92 @@
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/*
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* Initial LinuxBIOS ACPI Support - headers and defines.
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*
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* written by Stefan Reinauer <stepan@openbios.org>
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* (C) 2004 SUSE LINUX AG
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*
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* The ACPI table structs are based on the Linux kernel sources.
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*
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*/
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#ifndef __ASM_ACPI_H
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#define __ASM_ACPI_H
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#if HAVE_ACPI_TABLES==1
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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typedef unsigned long long u64;
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#define RSDP_NAME "RSDP"
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#define RSDP_SIG "RSD PTR " /* RSDT Pointer signature */
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/* ACPI 2.0 table RSDP */
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typedef struct acpi_rsdp {
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char signature[8];
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u8 checksum;
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char oem_id[6];
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u8 revision;
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u32 rsdt_address;
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u32 length;
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u64 xsdt_address;
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u8 ext_checksum;
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u8 reserved[3];
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} __attribute__((packed)) acpi_rsdp_t;
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/* Generic Address Container */
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typedef struct acpi_gen_regaddr {
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u8 space_id;
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u8 bit_width;
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u8 bit_offset;
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u8 resv;
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u32 addrl;
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u32 addrh;
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} __attribute__ ((packed)) acpi_addr_t;
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/* Generic ACPI Header, provided by (almost) all tables */
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typedef struct acpi_table_header /* ACPI common table header */
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{
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char signature [4]; /* ACPI signature (4 ASCII characters) */\
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u32 length; /* Length of table, in bytes, including header */\
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u8 revision; /* ACPI Specification minor version # */\
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u8 checksum; /* To make sum of entire table == 0 */\
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char oem_id [6]; /* OEM identification */\
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char oem_table_id [8]; /* OEM table identification */\
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u32 oem_revision; /* OEM revision number */\
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char asl_compiler_id [4]; /* ASL compiler vendor ID */\
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u32 asl_compiler_revision; /* ASL compiler revision number */
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} __attribute__ ((packed)) acpi_header_t;
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/* RSDT */
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typedef struct acpi_rsdt {
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struct acpi_table_header header;
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u32 entry[8];
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} __attribute__ ((packed)) acpi_rsdt_t;
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/* HPET TIMERS */
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typedef struct acpi_hpet {
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struct acpi_table_header header;
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u32 id;
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struct acpi_gen_regaddr addr;
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u8 number;
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u16 min_tick;
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u8 attributes;
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} __attribute__ ((packed)) acpi_hpet_t;
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unsigned long write_acpi_tables(unsigned long addr);
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#else // HAVE_ACPI_TABLES
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#define write_acpi_tables(start) (start)
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#endif
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#endif
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@ -641,6 +641,13 @@ define FAKE_SPDROM
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comment "Use this to fake spd rom values"
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end
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define HAVE_ACPI_TABLES
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default 0
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export always
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comment "Define to build ACPI tables"
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end
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###############################################
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# Board specific options
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###############################################
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@ -1,5 +1,5 @@
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/* coherent hypertransport initialization for AMD64
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* written by Stefan Reinauer <stepan@openbios.info>
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* written by Stefan Reinauer <stepan@openbios.org>
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* (c) 2003 by SuSE Linux AG
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*
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* This code is licensed under GPL.
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