Rudolf Marek | 293b5f5 | 2009-02-01 18:35:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2009 Rudolf Marek <r.marek@assembler.cz> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License v2 as published by |
| 8 | * the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | /* how many nesting we support */ |
| 21 | #define ACPIGEN_LENSTACK_SIZE 10 |
| 22 | |
| 23 | /* if you need to change this, change the acpigen_write_f and |
| 24 | acpigen_patch_len */ |
| 25 | |
| 26 | #define ACPIGEN_MAXLEN 0xfff |
| 27 | |
| 28 | #include <string.h> |
| 29 | #include <arch/acpigen.h> |
| 30 | #include <console/console.h> |
| 31 | |
| 32 | static char *gencurrent; |
| 33 | |
| 34 | char *len_stack[ACPIGEN_LENSTACK_SIZE]; |
| 35 | int ltop = 0; |
| 36 | |
| 37 | static int acpigen_write_len_f() |
| 38 | { |
| 39 | ASSERT(ltop < (ACPIGEN_LENSTACK_SIZE - 1)) |
| 40 | len_stack[ltop++] = gencurrent; |
| 41 | acpigen_emit_byte(0); |
| 42 | acpigen_emit_byte(0); |
| 43 | return 2; |
| 44 | } |
| 45 | |
| 46 | void acpigen_patch_len(int len) |
| 47 | { |
| 48 | ASSERT(len <= ACPIGEN_MAXLEN) |
| 49 | ASSERT(ltop > 0) |
| 50 | char *p = len_stack[--ltop]; |
| 51 | /* generate store length for 0xfff max */ |
| 52 | p[0] = (0x40 | (len & 0xf)); |
| 53 | p[1] = (len >> 4 & 0xff); |
| 54 | |
| 55 | } |
| 56 | |
| 57 | void acpigen_set_current(char *curr) { |
| 58 | gencurrent = curr; |
| 59 | } |
| 60 | |
| 61 | char *acpigen_get_current(void) { |
| 62 | return gencurrent; |
| 63 | } |
| 64 | |
| 65 | int acpigen_emit_byte(unsigned char b) |
| 66 | { |
| 67 | (*gencurrent++) = b; |
| 68 | return 1; |
| 69 | } |
| 70 | |
| 71 | int acpigen_write_package(int nr_el) |
| 72 | { |
| 73 | int len; |
| 74 | /* package op */ |
| 75 | acpigen_emit_byte(0x12); |
| 76 | len = acpigen_write_len_f(); |
| 77 | acpigen_emit_byte(nr_el); |
| 78 | return len + 2; |
| 79 | } |
| 80 | |
| 81 | int acpigen_write_byte(unsigned int data) |
| 82 | { |
| 83 | /* byte op */ |
| 84 | acpigen_emit_byte(0xa); |
| 85 | acpigen_emit_byte(data & 0xff); |
| 86 | return 2; |
| 87 | } |
| 88 | |
| 89 | int acpigen_write_dword(unsigned int data) |
| 90 | { |
| 91 | /* dword op */ |
| 92 | acpigen_emit_byte(0xc); |
| 93 | acpigen_emit_byte(data & 0xff); |
| 94 | acpigen_emit_byte((data >> 8) & 0xff); |
| 95 | acpigen_emit_byte((data >> 16) & 0xff); |
| 96 | acpigen_emit_byte((data >> 24) & 0xff); |
| 97 | return 5; |
| 98 | } |
| 99 | |
| 100 | int acpigen_write_name_byte(char *name, uint8_t val) { |
| 101 | int len; |
| 102 | len = acpigen_write_name(name); |
| 103 | len += acpigen_write_byte(val); |
| 104 | return len; |
| 105 | } |
| 106 | |
| 107 | int acpigen_write_name_dword(char *name, uint32_t val) { |
| 108 | int len; |
| 109 | len = acpigen_write_name(name); |
| 110 | len += acpigen_write_dword(val); |
| 111 | return len; |
| 112 | } |
| 113 | |
| 114 | int acpigen_emit_stream(char *data, int size) { |
| 115 | int i; |
| 116 | for (i = 0; i < size; i++) { |
| 117 | acpigen_emit_byte(data[i]); |
| 118 | } |
| 119 | return size; |
| 120 | } |
| 121 | |
| 122 | int acpigen_write_name(char *name) |
| 123 | { |
| 124 | int len = strlen(name); |
| 125 | /* name op */ |
| 126 | acpigen_emit_byte(0x8); |
| 127 | acpigen_emit_stream(name, len); |
| 128 | return len + 1; |
| 129 | } |
| 130 | |
| 131 | int acpigen_write_scope(char *name) |
| 132 | { |
| 133 | int len; |
| 134 | /* scope op */ |
| 135 | acpigen_emit_byte(0x10); |
| 136 | len = acpigen_write_len_f(); |
| 137 | return len + acpigen_emit_stream(name, strlen(name)) + 1; |
| 138 | } |
Rudolf Marek | f997b55 | 2009-02-14 15:40:23 +0000 | [diff] [blame^] | 139 | |
| 140 | int acpigen_write_processor(u8 cpuindex, u32 pblock_addr, u8 pblock_len) |
| 141 | { |
| 142 | /* |
| 143 | Processor (\_PR.CPUcpuindex, cpuindex, pblock_addr, pblock_len) |
| 144 | { |
| 145 | */ |
| 146 | char pscope[16]; |
| 147 | int len; |
| 148 | /* processor op */ |
| 149 | acpigen_emit_byte(0x5b); |
| 150 | acpigen_emit_byte(0x83); |
| 151 | len = acpigen_write_len_f(); |
| 152 | |
| 153 | sprintf(pscope, "\\._PR_CPU%x", (unsigned int) cpuindex); |
| 154 | len += acpigen_emit_stream(pscope, strlen(pscope)); |
| 155 | acpigen_emit_byte(cpuindex); |
| 156 | acpigen_emit_byte(pblock_addr & 0xff); |
| 157 | acpigen_emit_byte((pblock_addr >> 8) & 0xff); |
| 158 | acpigen_emit_byte((pblock_addr >> 16) & 0xff); |
| 159 | acpigen_emit_byte((pblock_addr >> 24) & 0xff); |
| 160 | acpigen_emit_byte(pblock_len); |
| 161 | return 6 + 2 + len; |
| 162 | } |
| 163 | |
| 164 | int acpigen_write_empty_PCT(void) |
| 165 | { |
| 166 | /* |
| 167 | Name (_PCT, Package (0x02) |
| 168 | { |
| 169 | ResourceTemplate () |
| 170 | { |
| 171 | Register (FFixedHW, |
| 172 | 0x00, // Bit Width |
| 173 | 0x00, // Bit Offset |
| 174 | 0x0000000000000000, // Address |
| 175 | ,) |
| 176 | }, |
| 177 | |
| 178 | ResourceTemplate () |
| 179 | { |
| 180 | Register (FFixedHW, |
| 181 | 0x00, // Bit Width |
| 182 | 0x00, // Bit Offset |
| 183 | 0x0000000000000000, // Address |
| 184 | ,) |
| 185 | } |
| 186 | }) |
| 187 | */ |
| 188 | static char stream[] = { |
| 189 | 0x08, 0x5F, 0x50, 0x43, 0x54, 0x12, 0x2C, /* 00000030 "0._PCT.," */ |
| 190 | 0x02, 0x11, 0x14, 0x0A, 0x11, 0x82, 0x0C, 0x00, /* 00000038 "........" */ |
| 191 | 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000040 "........" */ |
| 192 | 0x00, 0x00, 0x00, 0x00, 0x79, 0x00, 0x11, 0x14, /* 00000048 "....y..." */ |
| 193 | 0x0A, 0x11, 0x82, 0x0C, 0x00, 0x7F, 0x00, 0x00, /* 00000050 "........" */ |
| 194 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00000058 "........" */ |
| 195 | 0x00, 0x79, 0x00 |
| 196 | }; |
| 197 | return acpigen_emit_stream(stream, ARRAY_SIZE(stream)); |
| 198 | } |
| 199 | |
| 200 | /* generates a func with max supported P states */ |
| 201 | int acpigen_write_PPC(u8 nr) |
| 202 | { |
| 203 | /* |
| 204 | Method (_PPC, 0, NotSerialized) |
| 205 | { |
| 206 | Return (nr) |
| 207 | } |
| 208 | */ |
| 209 | int len; |
| 210 | /* method op */ |
| 211 | acpigen_emit_byte(0x14); |
| 212 | len = acpigen_write_len_f(); |
| 213 | len += acpigen_emit_stream("_PPC", 4); |
| 214 | /* no fnarg */ |
| 215 | acpigen_emit_byte(0x00); |
| 216 | /* return */ |
| 217 | acpigen_emit_byte(0xa4); |
| 218 | /* arg */ |
| 219 | len += acpigen_write_byte(nr); |
| 220 | acpigen_patch_len(len - 1); |
| 221 | return len + 3; |
| 222 | } |
| 223 | |
| 224 | int acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat, |
| 225 | u32 control, u32 status) |
| 226 | { |
| 227 | int len; |
| 228 | len = acpigen_write_package(6); |
| 229 | len += acpigen_write_dword(coreFreq); |
| 230 | len += acpigen_write_dword(power); |
| 231 | len += acpigen_write_dword(transLat); |
| 232 | len += acpigen_write_dword(busmLat); |
| 233 | len += acpigen_write_dword(control); |
| 234 | len += acpigen_write_dword(status); |
| 235 | //pkglen without the len opcode |
| 236 | acpigen_patch_len(len - 1); |
| 237 | return len; |
| 238 | } |