2 * This file is part of the coreboot project.
4 * Copyright (C) 2009 Rudolf Marek <r.marek@assembler.cz>
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.
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.
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
20 /* how many nesting we support */
21 #define ACPIGEN_LENSTACK_SIZE 10
23 /* if you need to change this, change the acpigen_write_f and
26 #define ACPIGEN_MAXLEN 0xfff
29 #include <arch/acpigen.h>
30 #include <console/console.h>
32 static char *gencurrent;
34 char *len_stack[ACPIGEN_LENSTACK_SIZE];
37 static int acpigen_write_len_f()
39 ASSERT(ltop < (ACPIGEN_LENSTACK_SIZE - 1))
40 len_stack[ltop++] = gencurrent;
46 void acpigen_patch_len(int len)
48 ASSERT(len <= ACPIGEN_MAXLEN)
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);
57 void acpigen_set_current(char *curr) {
61 char *acpigen_get_current(void) {
65 int acpigen_emit_byte(unsigned char b)
71 int acpigen_write_package(int nr_el)
75 acpigen_emit_byte(0x12);
76 len = acpigen_write_len_f();
77 acpigen_emit_byte(nr_el);
81 int acpigen_write_byte(unsigned int data)
84 acpigen_emit_byte(0xa);
85 acpigen_emit_byte(data & 0xff);
89 int acpigen_write_dword(unsigned int data)
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);
100 int acpigen_write_name_byte(char *name, uint8_t val) {
102 len = acpigen_write_name(name);
103 len += acpigen_write_byte(val);
107 int acpigen_write_name_dword(char *name, uint32_t val) {
109 len = acpigen_write_name(name);
110 len += acpigen_write_dword(val);
114 int acpigen_emit_stream(char *data, int size) {
116 for (i = 0; i < size; i++) {
117 acpigen_emit_byte(data[i]);
122 int acpigen_write_name(char *name)
124 int len = strlen(name);
126 acpigen_emit_byte(0x8);
127 acpigen_emit_stream(name, len);
131 int acpigen_write_scope(char *name)
135 acpigen_emit_byte(0x10);
136 len = acpigen_write_len_f();
137 return len + acpigen_emit_stream(name, strlen(name)) + 1;