Werner Zeh | c42a613 | 2015-02-12 12:40:15 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2012 Google Inc. |
| 5 | * Copyright (C) 2013-2014 Sage Electronic Engineering, LLC. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #include <types.h> |
| 22 | #include <string.h> |
| 23 | #include <cbmem.h> |
| 24 | #include <console/console.h> |
| 25 | #include <arch/acpi.h> |
| 26 | #include <arch/ioapic.h> |
| 27 | #include <arch/acpigen.h> |
| 28 | #include <arch/smp/mpspec.h> |
| 29 | #include <device/device.h> |
| 30 | #include <device/pci.h> |
| 31 | #include <device/pci_ids.h> |
| 32 | #include <cpu/cpu.h> |
| 33 | #include <cpu/x86/msr.h> |
| 34 | #include <baytrail/acpi.h> |
| 35 | #include <baytrail/nvs.h> |
| 36 | #include <baytrail/iomap.h> |
| 37 | |
| 38 | |
| 39 | extern const unsigned char AmlCode[]; |
| 40 | |
| 41 | static void acpi_create_gnvs(global_nvs_t *gnvs) |
| 42 | { |
| 43 | acpi_init_gnvs(gnvs); |
| 44 | |
| 45 | /* Enable USB ports in S3 */ |
| 46 | gnvs->s3u0 = 1; |
| 47 | gnvs->s3u1 = 1; |
| 48 | |
| 49 | /* Disable USB ports in S5 */ |
| 50 | gnvs->s5u0 = 0; |
| 51 | gnvs->s5u1 = 0; |
| 52 | |
| 53 | /* TPM Present */ |
| 54 | gnvs->tpmp = 0; |
| 55 | |
| 56 | /* Enable DPTF */ |
| 57 | gnvs->dpte = 0; |
| 58 | } |
| 59 | |
| 60 | unsigned long acpi_fill_madt(unsigned long current) |
| 61 | { |
| 62 | /* Local APICs */ |
| 63 | current = acpi_create_madt_lapics(current); |
| 64 | |
| 65 | /* IOAPIC */ |
| 66 | current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, |
| 67 | 2, IO_APIC_ADDR, 0); |
| 68 | |
| 69 | current = acpi_madt_irq_overrides(current); |
| 70 | |
| 71 | return current; |
| 72 | } |
| 73 | |
| 74 | unsigned long acpi_fill_ssdt_generator(unsigned long current, |
| 75 | const char *oem_table_id) |
| 76 | { |
| 77 | generate_cpu_entries(); |
| 78 | return (unsigned long) (acpigen_get_current()); |
| 79 | } |
| 80 | |
| 81 | unsigned long acpi_fill_slit(unsigned long current) |
| 82 | { |
| 83 | // Not implemented |
| 84 | return current; |
| 85 | } |
| 86 | |
| 87 | unsigned long acpi_fill_srat(unsigned long current) |
| 88 | { |
| 89 | /* No NUMA, no SRAT */ |
| 90 | return current; |
| 91 | } |
| 92 | |
| 93 | #define ALIGN_CURRENT current = (ALIGN(current, 16)) |
| 94 | unsigned long write_acpi_tables(unsigned long start) |
| 95 | { |
| 96 | unsigned long current; |
| 97 | int i; |
| 98 | acpi_rsdp_t *rsdp; |
| 99 | acpi_rsdt_t *rsdt; |
| 100 | acpi_xsdt_t *xsdt; |
| 101 | acpi_hpet_t *hpet; |
| 102 | acpi_madt_t *madt; |
| 103 | acpi_mcfg_t *mcfg; |
| 104 | acpi_fadt_t *fadt; |
| 105 | acpi_facs_t *facs; |
| 106 | acpi_header_t *ssdt; |
| 107 | acpi_header_t *ssdt2; |
| 108 | acpi_header_t *dsdt; |
| 109 | global_nvs_t *gnvs; |
| 110 | |
| 111 | current = start; |
| 112 | |
| 113 | /* Align ACPI tables to 16byte */ |
| 114 | ALIGN_CURRENT; |
| 115 | |
| 116 | printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start); |
| 117 | |
| 118 | /* We need at least an RSDP and an RSDT Table */ |
| 119 | rsdp = (acpi_rsdp_t *) current; |
| 120 | current += sizeof(acpi_rsdp_t); |
| 121 | ALIGN_CURRENT; |
| 122 | rsdt = (acpi_rsdt_t *) current; |
| 123 | current += sizeof(acpi_rsdt_t); |
| 124 | ALIGN_CURRENT; |
| 125 | xsdt = (acpi_xsdt_t *) current; |
| 126 | current += sizeof(acpi_xsdt_t); |
| 127 | ALIGN_CURRENT; |
| 128 | |
| 129 | /* clear all table memory */ |
| 130 | memset((void *) start, 0, current - start); |
| 131 | |
| 132 | acpi_write_rsdp(rsdp, rsdt, xsdt); |
| 133 | acpi_write_rsdt(rsdt); |
| 134 | acpi_write_xsdt(xsdt); |
| 135 | |
| 136 | facs = (acpi_facs_t *) current; |
| 137 | current += sizeof(acpi_facs_t); |
| 138 | ALIGN_CURRENT; |
| 139 | acpi_create_facs(facs); |
| 140 | printk(BIOS_DEBUG, "ACPI: * FACS @ %p Length %x", facs, |
| 141 | facs->length); |
| 142 | |
| 143 | dsdt = (acpi_header_t *) current; |
| 144 | memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); |
| 145 | current += dsdt->length; |
| 146 | ALIGN_CURRENT; |
| 147 | memcpy(dsdt, &AmlCode, dsdt->length); |
| 148 | printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x", dsdt, |
| 149 | dsdt->length); |
| 150 | |
| 151 | fadt = (acpi_fadt_t *) current; |
| 152 | current += sizeof(acpi_fadt_t); |
| 153 | ALIGN_CURRENT; |
| 154 | acpi_create_fadt(fadt, facs, dsdt); |
| 155 | acpi_add_table(rsdp, fadt); |
| 156 | printk(BIOS_DEBUG, "ACPI: * FADT @ %p Length %x", fadt, |
| 157 | fadt->header.length); |
| 158 | |
| 159 | /* |
| 160 | * We explicitly add these tables later on: |
| 161 | */ |
| 162 | hpet = (acpi_hpet_t *) current; |
| 163 | current += sizeof(acpi_hpet_t); |
| 164 | ALIGN_CURRENT; |
| 165 | acpi_create_intel_hpet(hpet); |
| 166 | acpi_add_table(rsdp, hpet); |
| 167 | printk(BIOS_DEBUG, "ACPI: * HPET @ %p Length %x\n", hpet, |
| 168 | hpet->header.length); |
| 169 | |
| 170 | /* If we want to use HPET Timers Linux wants an MADT */ |
| 171 | madt = (acpi_madt_t *) current; |
| 172 | acpi_create_madt(madt); |
| 173 | current += madt->header.length; |
| 174 | ALIGN_CURRENT; |
| 175 | acpi_add_table(rsdp, madt); |
| 176 | printk(BIOS_DEBUG, "ACPI: * MADT @ %p Length %x\n",madt, |
| 177 | madt->header.length); |
| 178 | |
| 179 | mcfg = (acpi_mcfg_t *) current; |
| 180 | acpi_create_mcfg(mcfg); |
| 181 | current += mcfg->header.length; |
| 182 | ALIGN_CURRENT; |
| 183 | acpi_add_table(rsdp, mcfg); |
| 184 | printk(BIOS_DEBUG, "ACPI: * MCFG @ %p Length %x\n",mcfg, |
| 185 | mcfg->header.length); |
| 186 | |
| 187 | /* Update GNVS pointer into CBMEM */ |
| 188 | gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); |
| 189 | if (!gnvs) { |
| 190 | printk(BIOS_DEBUG, "ACPI: Could not find CBMEM GNVS\n"); |
| 191 | gnvs = (global_nvs_t *)current; |
| 192 | } |
| 193 | |
| 194 | for (i=0; i < dsdt->length; i++) { |
| 195 | if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) { |
| 196 | printk(BIOS_DEBUG, "ACPI: Patching up global NVS in " |
| 197 | "DSDT at offset 0x%04x -> %p\n", i, gnvs); |
| 198 | *(u32*)(((u32)dsdt) + i) = (unsigned long)gnvs; |
| 199 | acpi_save_gnvs((unsigned long)gnvs); |
| 200 | break; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | /* And fill it */ |
| 205 | acpi_create_gnvs(gnvs); |
| 206 | |
| 207 | /* And tell SMI about it */ |
| 208 | #if CONFIG_HAVE_SMI_HANDLER |
| 209 | smm_setup_structures(gnvs, NULL, NULL); |
| 210 | #endif |
| 211 | |
| 212 | current += sizeof(global_nvs_t); |
| 213 | ALIGN_CURRENT; |
| 214 | |
| 215 | /* We patched up the DSDT, so we need to recalculate the checksum */ |
| 216 | dsdt->checksum = 0; |
| 217 | dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length); |
| 218 | |
| 219 | printk(BIOS_DEBUG, "ACPI Updated DSDT @ %p Length %x\n", dsdt, |
| 220 | dsdt->length); |
| 221 | |
| 222 | ssdt = (acpi_header_t *)current; |
| 223 | memset(ssdt, 0, sizeof(acpi_header_t)); |
| 224 | acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR); |
| 225 | if (ssdt->length) { |
| 226 | current += ssdt->length; |
| 227 | acpi_add_table(rsdp, ssdt); |
| 228 | printk(BIOS_DEBUG, "ACPI: * SSDT @ %p Length %x\n",ssdt, |
| 229 | ssdt->length); |
| 230 | ALIGN_CURRENT; |
| 231 | } else { |
| 232 | ssdt = NULL; |
| 233 | printk(BIOS_DEBUG, "ACPI: * SSDT not generated.\n"); |
| 234 | } |
| 235 | |
| 236 | ssdt2 = (acpi_header_t *)current; |
| 237 | memset(ssdt2, 0, sizeof(acpi_header_t)); |
| 238 | acpi_create_serialio_ssdt(ssdt2); |
| 239 | if (ssdt2->length) { |
| 240 | current += ssdt2->length; |
| 241 | acpi_add_table(rsdp, ssdt2); |
| 242 | printk(BIOS_DEBUG, "ACPI: * SSDT2 @ %p Length %x\n",ssdt2, |
| 243 | ssdt2->length); |
| 244 | ALIGN_CURRENT; |
| 245 | } else { |
| 246 | ssdt2 = NULL; |
| 247 | printk(BIOS_DEBUG, "ACPI: * SSDT2 not generated.\n"); |
| 248 | } |
| 249 | |
| 250 | printk(BIOS_DEBUG, "current = %lx\n", current); |
| 251 | |
| 252 | printk(BIOS_INFO, "ACPI: done.\n"); |
| 253 | return current; |
| 254 | } |