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/* sfi.h Simple Firmware Interface */ |
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/* |
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This file is provided under a dual BSD/GPLv2 license. When using or |
redistributing this file, you may do so under either license. |
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GPL LICENSE SUMMARY |
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Copyright(c) 2009 Intel Corporation. All rights reserved. |
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This program is free software; you can redistribute it and/or modify |
it under the terms of version 2 of the GNU General Public License as |
published by the Free Software Foundation. |
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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. |
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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. |
The full GNU General Public License is included in this distribution |
in the file called LICENSE.GPL. |
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BSD LICENSE |
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Copyright(c) 2009 Intel Corporation. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
modification, are permitted provided that the following conditions |
are met: |
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* Redistributions of source code must retain the above copyright |
notice, this list of conditions and the following disclaimer. |
* Redistributions in binary form must reproduce the above copyright |
notice, this list of conditions and the following disclaimer in |
the documentation and/or other materials provided with the |
distribution. |
* Neither the name of Intel Corporation nor the names of its |
contributors may be used to endorse or promote products derived |
from this software without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef _LINUX_SFI_H |
#define _LINUX_SFI_H |
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//#include <linux/init.h> |
#include <linux/types.h> |
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/* Table signatures reserved by the SFI specification */ |
#define SFI_SIG_SYST "SYST" |
#define SFI_SIG_FREQ "FREQ" |
#define SFI_SIG_IDLE "IDLE" |
#define SFI_SIG_CPUS "CPUS" |
#define SFI_SIG_MTMR "MTMR" |
#define SFI_SIG_MRTC "MRTC" |
#define SFI_SIG_MMAP "MMAP" |
#define SFI_SIG_APIC "APIC" |
#define SFI_SIG_XSDT "XSDT" |
#define SFI_SIG_WAKE "WAKE" |
#define SFI_SIG_DEVS "DEVS" |
#define SFI_SIG_GPIO "GPIO" |
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#define SFI_SIGNATURE_SIZE 4 |
#define SFI_OEM_ID_SIZE 6 |
#define SFI_OEM_TABLE_ID_SIZE 8 |
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#define SFI_NAME_LEN 16 |
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#define SFI_SYST_SEARCH_BEGIN 0x000E0000 |
#define SFI_SYST_SEARCH_END 0x000FFFFF |
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#define SFI_GET_NUM_ENTRIES(ptable, entry_type) \ |
((ptable->header.len - sizeof(struct sfi_table_header)) / \ |
(sizeof(entry_type))) |
/* |
* Table structures must be byte-packed to match the SFI specification, |
* as they are provided by the BIOS. |
*/ |
struct sfi_table_header { |
char sig[SFI_SIGNATURE_SIZE]; |
u32 len; |
u8 rev; |
u8 csum; |
char oem_id[SFI_OEM_ID_SIZE]; |
char oem_table_id[SFI_OEM_TABLE_ID_SIZE]; |
} __packed; |
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struct sfi_table_simple { |
struct sfi_table_header header; |
u64 pentry[1]; |
} __packed; |
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/* Comply with UEFI spec 2.1 */ |
struct sfi_mem_entry { |
u32 type; |
u64 phys_start; |
u64 virt_start; |
u64 pages; |
u64 attrib; |
} __packed; |
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struct sfi_cpu_table_entry { |
u32 apic_id; |
} __packed; |
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struct sfi_cstate_table_entry { |
u32 hint; /* MWAIT hint */ |
u32 latency; /* latency in ms */ |
} __packed; |
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struct sfi_apic_table_entry { |
u64 phys_addr; /* phy base addr for APIC reg */ |
} __packed; |
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struct sfi_freq_table_entry { |
u32 freq_mhz; /* in MHZ */ |
u32 latency; /* transition latency in ms */ |
u32 ctrl_val; /* value to write to PERF_CTL */ |
} __packed; |
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struct sfi_wake_table_entry { |
u64 phys_addr; /* pointer to where the wake vector locates */ |
} __packed; |
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struct sfi_timer_table_entry { |
u64 phys_addr; /* phy base addr for the timer */ |
u32 freq_hz; /* in HZ */ |
u32 irq; |
} __packed; |
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struct sfi_rtc_table_entry { |
u64 phys_addr; /* phy base addr for the RTC */ |
u32 irq; |
} __packed; |
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struct sfi_device_table_entry { |
u8 type; /* bus type, I2C, SPI or ...*/ |
#define SFI_DEV_TYPE_SPI 0 |
#define SFI_DEV_TYPE_I2C 1 |
#define SFI_DEV_TYPE_UART 2 |
#define SFI_DEV_TYPE_HSI 3 |
#define SFI_DEV_TYPE_IPC 4 |
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u8 host_num; /* attached to host 0, 1...*/ |
u16 addr; |
u8 irq; |
u32 max_freq; |
char name[SFI_NAME_LEN]; |
} __packed; |
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struct sfi_gpio_table_entry { |
char controller_name[SFI_NAME_LEN]; |
u16 pin_no; |
char pin_name[SFI_NAME_LEN]; |
} __packed; |
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typedef int (*sfi_table_handler) (struct sfi_table_header *table); |
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#ifdef CONFIG_SFI |
extern void __init sfi_init(void); |
extern int __init sfi_platform_init(void); |
extern void __init sfi_init_late(void); |
extern int sfi_table_parse(char *signature, char *oem_id, char *oem_table_id, |
sfi_table_handler handler); |
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extern int sfi_disabled; |
static inline void disable_sfi(void) |
{ |
sfi_disabled = 1; |
} |
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#else /* !CONFIG_SFI */ |
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static inline void sfi_init(void) |
{ |
} |
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static inline void sfi_init_late(void) |
{ |
} |
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#define sfi_disabled 0 |
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static inline int sfi_table_parse(char *signature, char *oem_id, |
char *oem_table_id, |
sfi_table_handler handler) |
{ |
return -1; |
} |
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#endif /* !CONFIG_SFI */ |
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#endif /*_LINUX_SFI_H*/ |