/* * This file is part of the coreboot project. * * Copyright (C) 2007-2008 coresystems GmbH * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; version 2 of * the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, * MA 02110-1301 USA */ #include #include #include #include #include #include #include "dmi.h" extern unsigned char AmlCode[]; typedef struct acpi_oemb { acpi_header_t header; u8 ss; u16 iost; u32 topm; u32 roms; u32 mg1b; u32 mg1l; u32 mg2b; u32 mg2l; u8 rsvd; u8 dmax; u32 hpta; u32 cpb0; u32 cpb1; u32 cpb2; u32 cpb3; u8 assb; u8 aotb; u32 aaxb; u8 smif; u8 dtse; u8 dts1; u8 dts2; u8 mpen; } __attribute__((packed)) acpi_oemb_t; void acpi_create_oemb(acpi_oemb_t *oemb) { acpi_header_t *header = &(oemb->header); unsigned long tolud; memset (oemb, 0, sizeof(oemb)); /* fill out header fields */ memcpy(header->signature, "OEMB", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_oemb_t); header->revision = 1; oemb->ss = 0x09; // ss1 + ss 4 oemb->iost = 0x0403; // ?? tolud = pci_read_config32(dev_find_slot(0, PCI_DEVFN(2, 0)), 0x5c); oemb->topm = tolud; oemb->roms = 0xfff00000; // 1M hardcoded oemb->mg1b = 0x000d0000; oemb->mg1l = 0x00010000; oemb->mg2b = tolud; oemb->mg2l = 0-tolud; oemb->dmax = 0x87; oemb->hpta = 0x000e36c0; header->checksum = acpi_checksum((void *) oemb, sizeof(acpi_oemb_t)); }; unsigned long acpi_fill_mcfg(unsigned long current) { device_t dev; u32 pciexbar = 0; u32 pciexbar_reg; int max_buses; dev = dev_find_device(0x8086, 0x27a0, 0); if (!dev) return current; // MMCFG not supported or not enabled. pciexbar_reg=pci_read_config32(dev, 0x48); if (!(pciexbar_reg & (1 << 0))) return current; switch ((pciexbar_reg >> 1) & 3) { case 0: // 256MB pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); max_buses = 256; break; case 1: // 128M pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)); max_buses = 128; break; case 2: // 64M pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26)); max_buses = 64; break; default: // RSVD return current; } if (!pciexbar) return current; current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, pciexbar, 0x0, 0x0, max_buses - 1); return current; } void acpi_create_intel_hpet(acpi_hpet_t * hpet) { #define HPET_ADDR 0xfed00000ULL acpi_header_t *header = &(hpet->header); acpi_addr_t *addr = &(hpet->addr); memset((void *) hpet, 0, sizeof(acpi_hpet_t)); /* fill out header fields */ memcpy(header->signature, HPET_NAME, 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_hpet_t); header->revision = 1; /* fill out HPET address */ addr->space_id = 0; /* Memory */ addr->bit_width = 64; addr->bit_offset = 0; addr->addrl = HPET_ADDR & 0xffffffff; addr->addrh = HPET_ADDR >> 32; hpet->id = 0x8086a201; /* Intel */ hpet->number = 0x00; hpet->min_tick = 0x0080; header->checksum = acpi_checksum((void *) hpet, sizeof(acpi_hpet_t)); } #define IO_APIC_ADDR 0xfec00000UL unsigned long acpi_fill_madt(unsigned long current) { /* Local Apic */ current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 1, 0); // This one is for the second core... Will it hurt? current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 2, 1); /* IOAPIC */ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 2, IO_APIC_ADDR, 0); /* INT_SRC_OVR */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 0, 2, 0); current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, 0x000d); // high/level return current; } unsigned long acpi_fill_slit(unsigned long current) { // Not implemented return current; } unsigned long acpi_fill_srat(unsigned long current) { /* No NUMA, no SRAT */ return current; } #define ALIGN_CURRENT current = ((current + 0x0f) & -0x10) unsigned long write_acpi_tables(unsigned long start) { unsigned long current; int i; acpi_rsdp_t *rsdp; acpi_rsdt_t *rsdt; acpi_hpet_t *hpet; acpi_madt_t *madt; acpi_mcfg_t *mcfg; acpi_fadt_t *fadt; acpi_facs_t *facs; acpi_oemb_t *oemb; acpi_header_t *dsdt; current = start; /* Align ACPI tables to 16byte */ ALIGN_CURRENT; printk_info("ACPI: Writing ACPI tables at %lx.\n", start); /* We need at least an RSDP and an RSDT Table */ rsdp = (acpi_rsdp_t *) current; current += sizeof(acpi_rsdp_t); ALIGN_CURRENT; rsdt = (acpi_rsdt_t *) current; current += sizeof(acpi_rsdt_t); ALIGN_CURRENT; /* clear all table memory */ memset((void *) start, 0, current - start); acpi_write_rsdp(rsdp, rsdt); acpi_write_rsdt(rsdt); /* * We explicitly add these tables later on: */ printk_debug("ACPI: * HPET\n"); hpet = (acpi_hpet_t *) current; current += sizeof(acpi_hpet_t); ALIGN_CURRENT; acpi_create_intel_hpet(hpet); acpi_add_table(rsdt, hpet); /* If we want to use HPET Timers Linux wants an MADT */ printk_debug("ACPI: * MADT\n"); madt = (acpi_madt_t *) current; acpi_create_madt(madt); current += madt->header.length; ALIGN_CURRENT; acpi_add_table(rsdt, madt); printk_debug("ACPI: * MCFG\n"); mcfg = (acpi_mcfg_t *) current; acpi_create_mcfg(mcfg); current += mcfg->header.length; ALIGN_CURRENT; acpi_add_table(rsdt, mcfg); printk_debug("ACPI: * OEMB\n"); oemb=(acpi_oemb_t *)current; current += sizeof(acpi_oemb_t); ALIGN_CURRENT; acpi_create_oemb(oemb); acpi_add_table(rsdt, oemb); printk_debug("ACPI: * FACS\n"); facs = (acpi_facs_t *) current; current += sizeof(acpi_facs_t); ALIGN_CURRENT; acpi_create_facs(facs); dsdt = (acpi_header_t *) current; current += ((acpi_header_t *) AmlCode)->length; ALIGN_CURRENT; memcpy((void *) dsdt, (void *) AmlCode, ((acpi_header_t *) AmlCode)->length); #if 1 for (i=0; i < dsdt->length; i++) { if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) { printk_debug("ACPI: Patching up DSDT at offset 0x%04x -> 0x%08x\n", i, 0x24 + (u32)oemb); *(u32*)(((u32)dsdt) + i) = 0x24 + (u32)oemb; break; } } /* We patched up the DSDT, so we need to recalculate the checksum */ dsdt->checksum = 0; dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length); #endif printk_debug("ACPI: * DSDT @ %p Length %x\n", dsdt, dsdt->length); printk_debug("ACPI: * FADT\n"); fadt = (acpi_fadt_t *) current; current += sizeof(acpi_fadt_t); ALIGN_CURRENT; acpi_create_fadt(fadt, facs, dsdt); acpi_add_table(rsdt, fadt); printk_debug("current = %lx\n", current); printk_debug("ACPI: * DMI (Linux workaround)\n"); memcpy((void *)0xfff80, dmi_table, DMI_TABLE_SIZE); #if CONFIG_HAVE_HIGH_TABLES == 1 memcpy((void *)current, dmi_table, DMI_TABLE_SIZE); current += DMI_TABLE_SIZE; ALIGN_CURRENT; #endif printk_info("ACPI: done.\n"); return current; }