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1 | /* sfi.h Simple Firmware Interface */ |
2 | |
3 | /* |
4 | |
5 | This file is provided under a dual BSD/GPLv2 license. When using or |
6 | redistributing this file, you may do so under either license. |
7 | |
8 | GPL LICENSE SUMMARY |
9 | |
10 | Copyright(c) 2009 Intel Corporation. All rights reserved. |
11 | |
12 | This program is free software; you can redistribute it and/or modify |
13 | it under the terms of version 2 of the GNU General Public License as |
14 | published by the Free Software Foundation. |
15 | |
16 | This program is distributed in the hope that it will be useful, but |
17 | WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
19 | General Public License for more details. |
20 | |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software |
23 | Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
24 | The full GNU General Public License is included in this distribution |
25 | in the file called LICENSE.GPL. |
26 | |
27 | BSD LICENSE |
28 | |
29 | Copyright(c) 2009 Intel Corporation. All rights reserved. |
30 | |
31 | Redistribution and use in source and binary forms, with or without |
32 | modification, are permitted provided that the following conditions |
33 | are met: |
34 | |
35 | * Redistributions of source code must retain the above copyright |
36 | notice, this list of conditions and the following disclaimer. |
37 | * Redistributions in binary form must reproduce the above copyright |
38 | notice, this list of conditions and the following disclaimer in |
39 | the documentation and/or other materials provided with the |
40 | distribution. |
41 | * Neither the name of Intel Corporation nor the names of its |
42 | contributors may be used to endorse or promote products derived |
43 | from this software without specific prior written permission. |
44 | |
45 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
46 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
47 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
48 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
49 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
50 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
51 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
52 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
53 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
54 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
55 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
56 | |
57 | */ |
58 | |
59 | #ifndef _LINUX_SFI_H |
60 | #define _LINUX_SFI_H |
61 | |
62 | /* Table signatures reserved by the SFI specification */ |
63 | #define SFI_SIG_SYST "SYST" |
64 | #define SFI_SIG_FREQ "FREQ" |
65 | #define SFI_SIG_IDLE "IDLE" |
66 | #define SFI_SIG_CPUS "CPUS" |
67 | #define SFI_SIG_MTMR "MTMR" |
68 | #define SFI_SIG_MRTC "MRTC" |
69 | #define SFI_SIG_MMAP "MMAP" |
70 | #define SFI_SIG_APIC "APIC" |
71 | #define SFI_SIG_XSDT "XSDT" |
72 | #define SFI_SIG_WAKE "WAKE" |
73 | #define SFI_SIG_DEVS "DEVS" |
74 | #define SFI_SIG_GPIO "GPIO" |
75 | |
76 | #define SFI_SIGNATURE_SIZE 4 |
77 | #define SFI_OEM_ID_SIZE 6 |
78 | #define SFI_OEM_TABLE_ID_SIZE 8 |
79 | |
80 | #define SFI_NAME_LEN 16 |
81 | |
82 | #define SFI_SYST_SEARCH_BEGIN 0x000E0000 |
83 | #define SFI_SYST_SEARCH_END 0x000FFFFF |
84 | |
85 | #define SFI_GET_NUM_ENTRIES(ptable, entry_type) \ |
86 | ((ptable->header.len - sizeof(struct sfi_table_header)) / \ |
87 | (sizeof(entry_type))) |
88 | /* |
89 | * Table structures must be byte-packed to match the SFI specification, |
90 | * as they are provided by the BIOS. |
91 | */ |
92 | struct sfi_table_header { |
93 | char sig[SFI_SIGNATURE_SIZE]; |
94 | u32 len; |
95 | u8 rev; |
96 | u8 csum; |
97 | char oem_id[SFI_OEM_ID_SIZE]; |
98 | char oem_table_id[SFI_OEM_TABLE_ID_SIZE]; |
99 | } __packed; |
100 | |
101 | struct sfi_table_simple { |
102 | struct sfi_table_header header; |
103 | u64 pentry[1]; |
104 | } __packed; |
105 | |
106 | /* Comply with UEFI spec 2.1 */ |
107 | struct sfi_mem_entry { |
108 | u32 type; |
109 | u64 phys_start; |
110 | u64 virt_start; |
111 | u64 pages; |
112 | u64 attrib; |
113 | } __packed; |
114 | |
115 | struct sfi_cpu_table_entry { |
116 | u32 apic_id; |
117 | } __packed; |
118 | |
119 | struct sfi_cstate_table_entry { |
120 | u32 hint; /* MWAIT hint */ |
121 | u32 latency; /* latency in ms */ |
122 | } __packed; |
123 | |
124 | struct sfi_apic_table_entry { |
125 | u64 phys_addr; /* phy base addr for APIC reg */ |
126 | } __packed; |
127 | |
128 | struct sfi_freq_table_entry { |
129 | u32 freq_mhz; /* in MHZ */ |
130 | u32 latency; /* transition latency in ms */ |
131 | u32 ctrl_val; /* value to write to PERF_CTL */ |
132 | } __packed; |
133 | |
134 | struct sfi_wake_table_entry { |
135 | u64 phys_addr; /* pointer to where the wake vector locates */ |
136 | } __packed; |
137 | |
138 | struct sfi_timer_table_entry { |
139 | u64 phys_addr; /* phy base addr for the timer */ |
140 | u32 freq_hz; /* in HZ */ |
141 | u32 irq; |
142 | } __packed; |
143 | |
144 | struct sfi_rtc_table_entry { |
145 | u64 phys_addr; /* phy base addr for the RTC */ |
146 | u32 irq; |
147 | } __packed; |
148 | |
149 | struct sfi_device_table_entry { |
150 | u8 type; /* bus type, I2C, SPI or ...*/ |
151 | #define SFI_DEV_TYPE_SPI 0 |
152 | #define SFI_DEV_TYPE_I2C 1 |
153 | #define SFI_DEV_TYPE_UART 2 |
154 | #define SFI_DEV_TYPE_HSI 3 |
155 | #define SFI_DEV_TYPE_IPC 4 |
156 | |
157 | u8 host_num; /* attached to host 0, 1...*/ |
158 | u16 addr; |
159 | u8 irq; |
160 | u32 max_freq; |
161 | char name[SFI_NAME_LEN]; |
162 | } __packed; |
163 | |
164 | struct sfi_gpio_table_entry { |
165 | char controller_name[SFI_NAME_LEN]; |
166 | u16 pin_no; |
167 | char pin_name[SFI_NAME_LEN]; |
168 | } __packed; |
169 | |
170 | typedef int (*sfi_table_handler) (struct sfi_table_header *table); |
171 | |
172 | #ifdef CONFIG_SFI |
173 | extern void __init sfi_init(void); |
174 | extern int __init sfi_platform_init(void); |
175 | extern void __init sfi_init_late(void); |
176 | extern int sfi_table_parse(char *signature, char *oem_id, char *oem_table_id, |
177 | sfi_table_handler handler); |
178 | |
179 | extern int sfi_disabled; |
180 | static inline void disable_sfi(void) |
181 | { |
182 | sfi_disabled = 1; |
183 | } |
184 | |
185 | #else /* !CONFIG_SFI */ |
186 | |
187 | static inline void sfi_init(void) |
188 | { |
189 | } |
190 | |
191 | static inline void sfi_init_late(void) |
192 | { |
193 | } |
194 | |
195 | #define sfi_disabled 0 |
196 | |
197 | static inline int sfi_table_parse(char *signature, char *oem_id, |
198 | char *oem_table_id, |
199 | sfi_table_handler handler) |
200 | { |
201 | return -1; |
202 | } |
203 | |
204 | #endif /* !CONFIG_SFI */ |
205 | |
206 | #endif /*_LINUX_SFI_H*/ |
207 |
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