| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2012 Google Inc. |
| * |
| * 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 <types.h> |
| #include <string.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <arch/acpi.h> |
| #include <arch/ioapic.h> |
| #include <arch/acpigen.h> |
| #include <arch/smp/mpspec.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/msr.h> |
| #include <ec/google/chromeec/ec.h> |
| #include <vendorcode/google/chromeos/gnvs.h> |
| #include <baytrail/acpi.h> |
| #include <baytrail/nvs.h> |
| #include <baytrail/iomap.h> |
| |
| extern const unsigned char AmlCode[]; |
| |
| static void acpi_create_gnvs(global_nvs_t *gnvs) |
| { |
| gnvs->pcnt = dev_count_cpu(); |
| |
| /* Enable USB ports in S3 */ |
| gnvs->s3u0 = 1; |
| gnvs->s3u1 = 1; |
| |
| /* Disable USB ports in S5 */ |
| gnvs->s5u0 = 0; |
| gnvs->s5u1 = 0; |
| |
| /* CBMEM TOC */ |
| gnvs->cmem = 0; |
| |
| /* Top of Low Memory (start of resource allocation) */ |
| gnvs->tolm = nc_read_top_of_low_memory(); |
| |
| /* TPM Present */ |
| gnvs->tpmp = 1; |
| |
| #if CONFIG_CHROMEOS |
| chromeos_init_vboot(&(gnvs->chromeos)); |
| gnvs->chromeos.vbt2 = google_ec_running_ro() ? |
| ACTIVE_ECFW_RO : ACTIVE_ECFW_RW; |
| #endif |
| |
| /* Update the mem console pointer. */ |
| gnvs->cbmc = (u32)cbmem_find(CBMEM_ID_CONSOLE); |
| } |
| |
| unsigned long acpi_fill_madt(unsigned long current) |
| { |
| /* Local APICs */ |
| current = acpi_create_madt_lapics(current); |
| |
| /* IOAPIC */ |
| current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, |
| 2, IO_APIC_ADDR, 0); |
| |
| current = acpi_madt_irq_overrides(current); |
| |
| return current; |
| } |
| |
| unsigned long acpi_fill_ssdt_generator(unsigned long current, |
| const char *oem_table_id) |
| { |
| generate_cpu_entries(); |
| return (unsigned long) (acpigen_get_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 = (ALIGN(current, 16)) |
| unsigned long write_acpi_tables(unsigned long start) |
| { |
| unsigned long current; |
| int i; |
| acpi_rsdp_t *rsdp; |
| acpi_rsdt_t *rsdt; |
| acpi_xsdt_t *xsdt; |
| acpi_hpet_t *hpet; |
| acpi_madt_t *madt; |
| acpi_mcfg_t *mcfg; |
| acpi_fadt_t *fadt; |
| acpi_facs_t *facs; |
| acpi_header_t *ssdt; |
| acpi_header_t *dsdt; |
| global_nvs_t *gnvs; |
| |
| current = start; |
| |
| /* Align ACPI tables to 16byte */ |
| ALIGN_CURRENT; |
| |
| printk(BIOS_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; |
| xsdt = (acpi_xsdt_t *) current; |
| current += sizeof(acpi_xsdt_t); |
| ALIGN_CURRENT; |
| |
| /* clear all table memory */ |
| memset((void *) start, 0, current - start); |
| |
| acpi_write_rsdp(rsdp, rsdt, xsdt); |
| acpi_write_rsdt(rsdt); |
| acpi_write_xsdt(xsdt); |
| |
| printk(BIOS_DEBUG, "ACPI: * FACS\n"); |
| facs = (acpi_facs_t *) current; |
| current += sizeof(acpi_facs_t); |
| ALIGN_CURRENT; |
| acpi_create_facs(facs); |
| |
| printk(BIOS_DEBUG, "ACPI: * DSDT\n"); |
| dsdt = (acpi_header_t *) current; |
| memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); |
| current += dsdt->length; |
| memcpy(dsdt, &AmlCode, dsdt->length); |
| |
| ALIGN_CURRENT; |
| |
| printk(BIOS_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(rsdp, fadt); |
| |
| /* |
| * We explicitly add these tables later on: |
| */ |
| printk(BIOS_DEBUG, "ACPI: * HPET\n"); |
| |
| hpet = (acpi_hpet_t *) current; |
| current += sizeof(acpi_hpet_t); |
| ALIGN_CURRENT; |
| acpi_create_intel_hpet(hpet); |
| acpi_add_table(rsdp, hpet); |
| |
| /* If we want to use HPET Timers Linux wants an MADT */ |
| printk(BIOS_DEBUG, "ACPI: * MADT\n"); |
| |
| madt = (acpi_madt_t *) current; |
| acpi_create_madt(madt); |
| current += madt->header.length; |
| ALIGN_CURRENT; |
| acpi_add_table(rsdp, madt); |
| |
| printk(BIOS_DEBUG, "ACPI: * MCFG\n"); |
| mcfg = (acpi_mcfg_t *) current; |
| acpi_create_mcfg(mcfg); |
| current += mcfg->header.length; |
| ALIGN_CURRENT; |
| acpi_add_table(rsdp, mcfg); |
| |
| /* Update GNVS pointer into CBMEM */ |
| gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); |
| if (!gnvs) { |
| printk(BIOS_DEBUG, "ACPI: Could not find CBMEM GNVS\n"); |
| gnvs = (global_nvs_t *)current; |
| } |
| |
| for (i=0; i < dsdt->length; i++) { |
| if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) { |
| printk(BIOS_DEBUG, "ACPI: Patching up global NVS in " |
| "DSDT at offset 0x%04x -> %p\n", i, gnvs); |
| *(u32*)(((u32)dsdt) + i) = (unsigned long)gnvs; |
| acpi_save_gnvs((unsigned long)gnvs); |
| break; |
| } |
| } |
| |
| /* And fill it */ |
| acpi_create_gnvs(gnvs); |
| |
| /* And tell SMI about it */ |
| smm_setup_structures(gnvs, NULL, NULL); |
| |
| current += sizeof(global_nvs_t); |
| ALIGN_CURRENT; |
| |
| /* We patched up the DSDT, so we need to recalculate the checksum */ |
| dsdt->checksum = 0; |
| dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length); |
| |
| printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x\n", dsdt, |
| dsdt->length); |
| |
| printk(BIOS_DEBUG, "ACPI: * SSDT\n"); |
| ssdt = (acpi_header_t *)current; |
| acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR); |
| current += ssdt->length; |
| acpi_add_table(rsdp, ssdt); |
| ALIGN_CURRENT; |
| |
| printk(BIOS_DEBUG, "current = %lx\n", current); |
| printk(BIOS_INFO, "ACPI: done.\n"); |
| return current; |
| } |