epia-m support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1655 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Ronald G. Minnich
@@ -3,6 +3,10 @@
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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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/* ACPI FADT, FACS, and DSDT table support added by
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* Nick Barker <nick.barker9@btinternet.com>, and those portions
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* (C) Copyright 2004 Nick Barker
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*/
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#include <console/console.h>
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#include <string.h>
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@@ -22,7 +26,15 @@
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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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// FIX ME - define needs declaring / setting in Config files
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#define HAVE_ACPI_FADT
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#ifdef HAVE_ACPI_FADT
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extern unsigned char AmlCode[];
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#endif
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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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@@ -43,13 +55,15 @@ static void acpi_add_table(acpi_rsdt_t *rsdt, void *table)
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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 length to stop kernel winging about invalid entries */
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rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
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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+1);
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printk_debug("ACPI: added table %d/8 Length now %d\n",i+1,rsdt->header.length);
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return;
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}
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}
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@@ -181,6 +195,22 @@ static void acpi_create_hpet(acpi_hpet_t *hpet)
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header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
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}
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static void acpi_create_facs(acpi_facs_t *facs)
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{
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memset( (void *)facs,0, sizeof(acpi_facs_t));
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memcpy(facs->signature,"FACS",4);
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facs->length = sizeof(acpi_facs_t);
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facs->hardware_signature = 0;
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facs->firmware_waking_vector = 0;
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facs->global_lock = 0;
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facs->flags = 0;
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facs->x_firmware_waking_vector_l = 0;
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facs->x_firmware_waking_vector_h = 0;
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facs->version = 1;
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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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@@ -222,6 +252,9 @@ unsigned long write_acpi_tables(unsigned long start)
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acpi_rsdt_t *rsdt;
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acpi_hpet_t *hpet;
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acpi_madt_t *madt;
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acpi_fadt_t *fadt;
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acpi_facs_t *facs;
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acpi_header_t *dsdt;
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/* Align ACPI tables to 16byte */
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start = ( start + 0x0f ) & -0x10;
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@@ -244,7 +277,6 @@ unsigned long write_acpi_tables(unsigned long start)
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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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@@ -263,6 +295,35 @@ unsigned long write_acpi_tables(unsigned long start)
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#endif
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#ifdef HAVE_ACPI_FADT
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printk_debug("ACPI: * FACS\n");
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facs = (acpi_facs_t *) current;
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current += sizeof(acpi_facs_t);
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acpi_create_facs(facs);
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dsdt = (acpi_header_t *)current;
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current += ((acpi_header_t *)AmlCode)->length;
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memcpy((void *)dsdt,(void *)AmlCode, ((acpi_header_t *)AmlCode)->length);
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dsdt->checksum = 0; // don't trust intel iasl compiler to get this right
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dsdt->checksum = acpi_checksum(dsdt,dsdt->length);
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printk_debug("ACPI: * DSDT @ %08x Length %x\n",dsdt,dsdt->length);
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printk_debug("ACPI: * FADT\n");
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fadt = (acpi_fadt_t *) current;
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current += sizeof(acpi_fadt_t);
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acpi_create_fadt(fadt,facs,dsdt);
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acpi_add_table(rsdt,fadt);
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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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@@ -60,8 +60,13 @@ struct lb_memory *write_tables(struct mem_range *mem, unsigned long *processor_m
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low_table_end = write_smp_table(low_table_end, processor_map);
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/* Write ACPI tables */
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low_table_end = write_acpi_tables(low_table_end);
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/* write them in the rom area because DSDT can be large (8K on epia-m) which
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* pushes linuxbios table out of first 4K if set up in low table area
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*/
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rom_table_end = write_acpi_tables(rom_table_end);
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rom_table_end = (rom_table_end+1023) & ~1023;
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/* Don't write anything in the traditional x86 BIOS data segment */
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if (low_table_end < 0x500) {
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low_table_end = 0x500;
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@@ -7,6 +7,9 @@
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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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/* ACPI FADT & FACS added by Nick Barker <nick.barker9@btinternet.com>
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* those parts (C) 2004 Nick Barker
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*/
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#ifndef __ASM_ACPI_H
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@@ -134,7 +137,77 @@ typedef struct acpi_madt_irqoverride {
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} __attribute__ ((packed)) acpi_madt_irqoverride_t;
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typedef struct acpi_fadt {
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struct acpi_table_header header;
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u32 firmware_ctrl;
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u32 dsdt;
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u8 res1;
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u8 preferred_pm_profile;
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u16 sci_int;
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u32 smi_cmd;
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u8 acpi_enable;
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u8 acpi_disable;
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u8 s4bios_req;
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u8 pstate_cnt;
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u32 pm1a_evt_blk;
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u32 pm1b_evt_blk;
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u32 pm1a_cnt_blk;
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u32 pm1b_cnt_blk;
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u32 pm2_cnt_blk;
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u32 pm_tmr_blk;
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u32 gpe0_blk;
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u32 gpe1_blk;
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u8 pm1_evt_len;
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u8 pm1_cnt_len;
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u8 pm2_cnt_len;
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u8 pm_tmr_len;
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u8 gpe0_blk_len;
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u8 gpe1_blk_len;
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u8 gpe1_base;
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u8 cst_cnt;
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u16 p_lvl2_lat;
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u16 p_lvl3_lat;
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u16 flush_size;
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u16 flush_stride;
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u8 duty_offset;
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u8 duty_width;
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u8 day_alrm;
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u8 mon_alrm;
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u8 century;
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u16 iapc_boot_arch;
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u8 res2;
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u32 flags;
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struct acpi_gen_regaddr reset_reg;
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u8 reset_value;
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u8 res3;
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u8 res4;
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u8 res5;
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u32 x_firmware_ctl_l;
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u32 x_firmware_ctl_h;
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u32 x_dsdt_l;
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u32 x_dsdt_h;
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struct acpi_gen_regaddr x_pm1a_evt_blk;
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struct acpi_gen_regaddr x_pm1b_evt_blk;
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struct acpi_gen_regaddr x_pm1a_cnt_blk;
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struct acpi_gen_regaddr x_pm1b_cnt_blk;
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struct acpi_gen_regaddr x_pm2_cnt_blk;
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struct acpi_gen_regaddr x_pm_tmr_blk;
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struct acpi_gen_regaddr x_gpe0_blk;
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struct acpi_gen_regaddr x_gpe1_blk;
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} __attribute__ ((packed)) acpi_fadt_t;
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typedef struct acpi_facs {
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char signature[4];
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u32 length;
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u32 hardware_signature;
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u32 firmware_waking_vector;
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u32 global_lock;
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u32 flags;
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u32 x_firmware_waking_vector_l;
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u32 x_firmware_waking_vector_h;
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u8 version;
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u8 resv[33];
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} __attribute__ ((packed)) acpi_facs_t;
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unsigned long write_acpi_tables(unsigned long addr);
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@@ -116,7 +116,7 @@ gdt:
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.word 0x0000, 0x0000 /* dummy */
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.byte 0x00, 0x00, 0x00, 0x00
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#if defined(CONFIG_VGABIOS) && (CONFIG_VGABIOS == 1)
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#if defined(CONFIG_LEGACY_VGABIOS) && (CONFIG_LEGACY_VGABIOS == 1)
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// from monty:
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/* 0x00009a00,0000ffffULL, 20h: 16-bit 64k code at 0x00000000 */
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/* 0x00009200,0000ffffULL 28h: 16-bit 64k data at 0x00000000 */
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