Merge branch 'sfi-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6
* 'sfi-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6: SFI: remove unneeded includes sfi: Remove unused code SFI: Hook PCI MMCONFIG x86: add arch-specific SFI support SFI: add capability to parse ACPI tables SFI: add platform-independent core support SFI: create linux/sfi.h SFI: Simple Firmware Interface - MAINTAINERS, Kconfig
This commit is contained in:
Linus Torvalds
Коммит
746942d06a
12
MAINTAINERS
12
MAINTAINERS
|
|
@ -4669,6 +4669,18 @@ L: linux-pci@vger.kernel.org
|
|||
S: Supported
|
||||
F: drivers/pci/hotplug/shpchp*
|
||||
|
||||
SIMPLE FIRMWARE INTERFACE (SFI)
|
||||
P: Len Brown
|
||||
M: lenb@kernel.org
|
||||
L: sfi-devel@simplefirmware.org
|
||||
W: http://simplefirmware.org/
|
||||
T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6.git
|
||||
S: Supported
|
||||
F: arch/x86/kernel/*sfi*
|
||||
F: drivers/sfi/
|
||||
F: include/linux/sfi*.h
|
||||
|
||||
|
||||
SIMTEC EB110ATX (Chalice CATS)
|
||||
P: Ben Dooks
|
||||
M: Vincent Sanders <support@simtec.co.uk>
|
||||
|
|
|
|||
|
|
@ -1666,6 +1666,8 @@ source "kernel/power/Kconfig"
|
|||
|
||||
source "drivers/acpi/Kconfig"
|
||||
|
||||
source "drivers/sfi/Kconfig"
|
||||
|
||||
config X86_APM_BOOT
|
||||
bool
|
||||
default y
|
||||
|
|
@ -1861,7 +1863,7 @@ config PCI_DIRECT
|
|||
|
||||
config PCI_MMCONFIG
|
||||
def_bool y
|
||||
depends on X86_32 && PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
|
||||
depends on X86_32 && PCI && (ACPI || SFI) && (PCI_GOMMCONFIG || PCI_GOANY)
|
||||
|
||||
config PCI_OLPC
|
||||
def_bool y
|
||||
|
|
|
|||
|
|
@ -56,6 +56,7 @@ obj-$(CONFIG_INTEL_TXT) += tboot.o
|
|||
obj-$(CONFIG_STACKTRACE) += stacktrace.o
|
||||
obj-y += cpu/
|
||||
obj-y += acpi/
|
||||
obj-$(CONFIG_SFI) += sfi.o
|
||||
obj-y += reboot.o
|
||||
obj-$(CONFIG_MCA) += mca_32.o
|
||||
obj-$(CONFIG_X86_MSR) += msr.o
|
||||
|
|
|
|||
|
|
@ -27,6 +27,7 @@
|
|||
#include <linux/screen_info.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/sfi.h>
|
||||
#include <linux/apm_bios.h>
|
||||
#include <linux/initrd.h>
|
||||
#include <linux/bootmem.h>
|
||||
|
|
@ -985,6 +986,8 @@ void __init setup_arch(char **cmdline_p)
|
|||
*/
|
||||
acpi_boot_init();
|
||||
|
||||
sfi_init();
|
||||
|
||||
/*
|
||||
* get boot-time SMP configuration:
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,122 @@
|
|||
/*
|
||||
* sfi.c - x86 architecture SFI support.
|
||||
*
|
||||
* Copyright (c) 2009, Intel Corporation.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope 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.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#define KMSG_COMPONENT "SFI"
|
||||
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
|
||||
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/sfi.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <asm/io_apic.h>
|
||||
#include <asm/mpspec.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/apic.h>
|
||||
|
||||
#ifdef CONFIG_X86_LOCAL_APIC
|
||||
static unsigned long sfi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
|
||||
|
||||
void __init mp_sfi_register_lapic_address(unsigned long address)
|
||||
{
|
||||
mp_lapic_addr = address;
|
||||
|
||||
set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr);
|
||||
if (boot_cpu_physical_apicid == -1U)
|
||||
boot_cpu_physical_apicid = read_apic_id();
|
||||
|
||||
pr_info("Boot CPU = %d\n", boot_cpu_physical_apicid);
|
||||
}
|
||||
|
||||
/* All CPUs enumerated by SFI must be present and enabled */
|
||||
void __cpuinit mp_sfi_register_lapic(u8 id)
|
||||
{
|
||||
if (MAX_APICS - id <= 0) {
|
||||
pr_warning("Processor #%d invalid (max %d)\n",
|
||||
id, MAX_APICS);
|
||||
return;
|
||||
}
|
||||
|
||||
pr_info("registering lapic[%d]\n", id);
|
||||
|
||||
generic_processor_info(id, GET_APIC_VERSION(apic_read(APIC_LVR)));
|
||||
}
|
||||
|
||||
static int __init sfi_parse_cpus(struct sfi_table_header *table)
|
||||
{
|
||||
struct sfi_table_simple *sb;
|
||||
struct sfi_cpu_table_entry *pentry;
|
||||
int i;
|
||||
int cpu_num;
|
||||
|
||||
sb = (struct sfi_table_simple *)table;
|
||||
cpu_num = SFI_GET_NUM_ENTRIES(sb, struct sfi_cpu_table_entry);
|
||||
pentry = (struct sfi_cpu_table_entry *)sb->pentry;
|
||||
|
||||
for (i = 0; i < cpu_num; i++) {
|
||||
mp_sfi_register_lapic(pentry->apic_id);
|
||||
pentry++;
|
||||
}
|
||||
|
||||
smp_found_config = 1;
|
||||
return 0;
|
||||
}
|
||||
#endif /* CONFIG_X86_LOCAL_APIC */
|
||||
|
||||
#ifdef CONFIG_X86_IO_APIC
|
||||
static u32 gsi_base;
|
||||
|
||||
static int __init sfi_parse_ioapic(struct sfi_table_header *table)
|
||||
{
|
||||
struct sfi_table_simple *sb;
|
||||
struct sfi_apic_table_entry *pentry;
|
||||
int i, num;
|
||||
|
||||
sb = (struct sfi_table_simple *)table;
|
||||
num = SFI_GET_NUM_ENTRIES(sb, struct sfi_apic_table_entry);
|
||||
pentry = (struct sfi_apic_table_entry *)sb->pentry;
|
||||
|
||||
for (i = 0; i < num; i++) {
|
||||
mp_register_ioapic(i, pentry->phys_addr, gsi_base);
|
||||
gsi_base += io_apic_get_redir_entries(i);
|
||||
pentry++;
|
||||
}
|
||||
|
||||
WARN(pic_mode, KERN_WARNING
|
||||
"SFI: pic_mod shouldn't be 1 when IOAPIC table is present\n");
|
||||
pic_mode = 0;
|
||||
return 0;
|
||||
}
|
||||
#endif /* CONFIG_X86_IO_APIC */
|
||||
|
||||
/*
|
||||
* sfi_platform_init(): register lapics & io-apics
|
||||
*/
|
||||
int __init sfi_platform_init(void)
|
||||
{
|
||||
#ifdef CONFIG_X86_LOCAL_APIC
|
||||
mp_sfi_register_lapic_address(sfi_lapic_addr);
|
||||
sfi_table_parse(SFI_SIG_CPUS, NULL, NULL, sfi_parse_cpus);
|
||||
#endif
|
||||
#ifdef CONFIG_X86_IO_APIC
|
||||
sfi_table_parse(SFI_SIG_APIC, NULL, NULL, sfi_parse_ioapic);
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -13,10 +13,12 @@
|
|||
#include <linux/pci.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/sfi_acpi.h>
|
||||
#include <linux/bitmap.h>
|
||||
#include <linux/sort.h>
|
||||
#include <asm/e820.h>
|
||||
#include <asm/pci_x86.h>
|
||||
#include <asm/acpi.h>
|
||||
|
||||
#define PREFIX "PCI: "
|
||||
|
||||
|
|
@ -493,7 +495,7 @@ static void __init pci_mmcfg_reject_broken(int early)
|
|||
(unsigned int)cfg->start_bus_number,
|
||||
(unsigned int)cfg->end_bus_number);
|
||||
|
||||
if (!early)
|
||||
if (!early && !acpi_disabled)
|
||||
valid = is_mmconf_reserved(is_acpi_reserved, addr, size, i, cfg, 0);
|
||||
|
||||
if (valid)
|
||||
|
|
@ -608,7 +610,7 @@ static void __init __pci_mmcfg_init(int early)
|
|||
}
|
||||
|
||||
if (!known_bridge)
|
||||
acpi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
|
||||
acpi_sfi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
|
||||
|
||||
pci_mmcfg_reject_broken(early);
|
||||
|
||||
|
|
|
|||
|
|
@ -11,9 +11,9 @@
|
|||
|
||||
#include <linux/pci.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/acpi.h>
|
||||
#include <asm/e820.h>
|
||||
#include <asm/pci_x86.h>
|
||||
#include <acpi/acpi.h>
|
||||
|
||||
/* Assume systems with more busses have correct MCFG */
|
||||
#define mmcfg_virt_addr ((void __iomem *) fix_to_virt(FIX_PCIE_MCFG))
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@ obj-$(CONFIG_PARISC) += parisc/
|
|||
obj-$(CONFIG_RAPIDIO) += rapidio/
|
||||
obj-y += video/
|
||||
obj-$(CONFIG_ACPI) += acpi/
|
||||
obj-$(CONFIG_SFI) += sfi/
|
||||
# PnP must come after ACPI since it will eventually need to check if acpi
|
||||
# was used and do nothing if so
|
||||
obj-$(CONFIG_PNP) += pnp/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,17 @@
|
|||
#
|
||||
# SFI Configuration
|
||||
#
|
||||
|
||||
menuconfig SFI
|
||||
bool "SFI (Simple Firmware Interface) Support"
|
||||
---help---
|
||||
The Simple Firmware Interface (SFI) provides a lightweight method
|
||||
for platform firmware to pass information to the operating system
|
||||
via static tables in memory. Kernel SFI support is required to
|
||||
boot on SFI-only platforms. Currently, all SFI-only platforms are
|
||||
based on the 2nd generation Intel Atom processor platform,
|
||||
code-named Moorestown.
|
||||
|
||||
For more information, see http://simplefirmware.org
|
||||
|
||||
Say 'Y' here to enable the kernel to boot on SFI-only platforms.
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
obj-y += sfi_acpi.o
|
||||
obj-y += sfi_core.o
|
||||
|
||||
|
|
@ -0,0 +1,175 @@
|
|||
/* sfi_acpi.c Simple Firmware Interface - ACPI extensions */
|
||||
|
||||
/*
|
||||
|
||||
This file is provided under a dual BSD/GPLv2 license. When using or
|
||||
redistributing this file, you may do so under either license.
|
||||
|
||||
GPL LICENSE SUMMARY
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
BSD LICENSE
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* 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.
|
||||
|
||||
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.
|
||||
|
||||
*/
|
||||
|
||||
#define KMSG_COMPONENT "SFI"
|
||||
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <acpi/acpi.h>
|
||||
|
||||
#include <linux/sfi.h>
|
||||
#include "sfi_core.h"
|
||||
|
||||
/*
|
||||
* SFI can access ACPI-defined tables via an optional ACPI XSDT.
|
||||
*
|
||||
* This allows re-use, and avoids re-definition, of standard tables.
|
||||
* For example, the "MCFG" table is defined by PCI, reserved by ACPI,
|
||||
* and is expected to be present many SFI-only systems.
|
||||
*/
|
||||
|
||||
static struct acpi_table_xsdt *xsdt_va __read_mostly;
|
||||
|
||||
#define XSDT_GET_NUM_ENTRIES(ptable, entry_type) \
|
||||
((ptable->header.length - sizeof(struct acpi_table_header)) / \
|
||||
(sizeof(entry_type)))
|
||||
|
||||
static inline struct sfi_table_header *acpi_to_sfi_th(
|
||||
struct acpi_table_header *th)
|
||||
{
|
||||
return (struct sfi_table_header *)th;
|
||||
}
|
||||
|
||||
static inline struct acpi_table_header *sfi_to_acpi_th(
|
||||
struct sfi_table_header *th)
|
||||
{
|
||||
return (struct acpi_table_header *)th;
|
||||
}
|
||||
|
||||
/*
|
||||
* sfi_acpi_parse_xsdt()
|
||||
*
|
||||
* Parse the ACPI XSDT for later access by sfi_acpi_table_parse().
|
||||
*/
|
||||
static int __init sfi_acpi_parse_xsdt(struct sfi_table_header *th)
|
||||
{
|
||||
struct sfi_table_key key = SFI_ANY_KEY;
|
||||
int tbl_cnt, i;
|
||||
void *ret;
|
||||
|
||||
xsdt_va = (struct acpi_table_xsdt *)th;
|
||||
tbl_cnt = XSDT_GET_NUM_ENTRIES(xsdt_va, u64);
|
||||
for (i = 0; i < tbl_cnt; i++) {
|
||||
ret = sfi_check_table(xsdt_va->table_offset_entry[i], &key);
|
||||
if (IS_ERR(ret)) {
|
||||
disable_sfi();
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int __init sfi_acpi_init(void)
|
||||
{
|
||||
struct sfi_table_key xsdt_key = { .sig = SFI_SIG_XSDT };
|
||||
|
||||
sfi_table_parse(SFI_SIG_XSDT, NULL, NULL, sfi_acpi_parse_xsdt);
|
||||
|
||||
/* Only call the get_table to keep the table mapped */
|
||||
xsdt_va = (struct acpi_table_xsdt *)sfi_get_table(&xsdt_key);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct acpi_table_header *sfi_acpi_get_table(struct sfi_table_key *key)
|
||||
{
|
||||
u32 tbl_cnt, i;
|
||||
void *ret;
|
||||
|
||||
tbl_cnt = XSDT_GET_NUM_ENTRIES(xsdt_va, u64);
|
||||
for (i = 0; i < tbl_cnt; i++) {
|
||||
ret = sfi_check_table(xsdt_va->table_offset_entry[i], key);
|
||||
if (!IS_ERR(ret) && ret)
|
||||
return sfi_to_acpi_th(ret);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void sfi_acpi_put_table(struct acpi_table_header *table)
|
||||
{
|
||||
sfi_put_table(acpi_to_sfi_th(table));
|
||||
}
|
||||
|
||||
/*
|
||||
* sfi_acpi_table_parse()
|
||||
*
|
||||
* Find specified table in XSDT, run handler on it and return its return value
|
||||
*/
|
||||
int sfi_acpi_table_parse(char *signature, char *oem_id, char *oem_table_id,
|
||||
int(*handler)(struct acpi_table_header *))
|
||||
{
|
||||
struct acpi_table_header *table = NULL;
|
||||
struct sfi_table_key key;
|
||||
int ret = 0;
|
||||
|
||||
if (sfi_disabled)
|
||||
return -1;
|
||||
|
||||
key.sig = signature;
|
||||
key.oem_id = oem_id;
|
||||
key.oem_table_id = oem_table_id;
|
||||
|
||||
table = sfi_acpi_get_table(&key);
|
||||
if (!table)
|
||||
return -EINVAL;
|
||||
|
||||
ret = handler(table);
|
||||
sfi_acpi_put_table(table);
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -0,0 +1,407 @@
|
|||
/* sfi_core.c Simple Firmware Interface - core internals */
|
||||
|
||||
/*
|
||||
|
||||
This file is provided under a dual BSD/GPLv2 license. When using or
|
||||
redistributing this file, you may do so under either license.
|
||||
|
||||
GPL LICENSE SUMMARY
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
BSD LICENSE
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* 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.
|
||||
|
||||
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.
|
||||
|
||||
*/
|
||||
|
||||
#define KMSG_COMPONENT "SFI"
|
||||
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
|
||||
|
||||
#include <linux/bootmem.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/acpi.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/sfi.h>
|
||||
|
||||
#include "sfi_core.h"
|
||||
|
||||
#define ON_SAME_PAGE(addr1, addr2) \
|
||||
(((unsigned long)(addr1) & PAGE_MASK) == \
|
||||
((unsigned long)(addr2) & PAGE_MASK))
|
||||
#define TABLE_ON_PAGE(page, table, size) (ON_SAME_PAGE(page, table) && \
|
||||
ON_SAME_PAGE(page, table + size))
|
||||
|
||||
int sfi_disabled __read_mostly;
|
||||
EXPORT_SYMBOL(sfi_disabled);
|
||||
|
||||
static u64 syst_pa __read_mostly;
|
||||
static struct sfi_table_simple *syst_va __read_mostly;
|
||||
|
||||
/*
|
||||
* FW creates and saves the SFI tables in memory. When these tables get
|
||||
* used, they may need to be mapped to virtual address space, and the mapping
|
||||
* can happen before or after the ioremap() is ready, so a flag is needed
|
||||
* to indicating this
|
||||
*/
|
||||
static u32 sfi_use_ioremap __read_mostly;
|
||||
|
||||
static void __iomem *sfi_map_memory(u64 phys, u32 size)
|
||||
{
|
||||
if (!phys || !size)
|
||||
return NULL;
|
||||
|
||||
if (sfi_use_ioremap)
|
||||
return ioremap(phys, size);
|
||||
else
|
||||
return early_ioremap(phys, size);
|
||||
}
|
||||
|
||||
static void sfi_unmap_memory(void __iomem *virt, u32 size)
|
||||
{
|
||||
if (!virt || !size)
|
||||
return;
|
||||
|
||||
if (sfi_use_ioremap)
|
||||
iounmap(virt);
|
||||
else
|
||||
early_iounmap(virt, size);
|
||||
}
|
||||
|
||||
static void sfi_print_table_header(unsigned long long pa,
|
||||
struct sfi_table_header *header)
|
||||
{
|
||||
pr_info("%4.4s %llX, %04X (v%d %6.6s %8.8s)\n",
|
||||
header->sig, pa,
|
||||
header->len, header->rev, header->oem_id,
|
||||
header->oem_table_id);
|
||||
}
|
||||
|
||||
/*
|
||||
* sfi_verify_table()
|
||||
* Sanity check table lengh, calculate checksum
|
||||
*/
|
||||
static __init int sfi_verify_table(struct sfi_table_header *table)
|
||||
{
|
||||
|
||||
u8 checksum = 0;
|
||||
u8 *puchar = (u8 *)table;
|
||||
u32 length = table->len;
|
||||
|
||||
/* Sanity check table length against arbitrary 1MB limit */
|
||||
if (length > 0x100000) {
|
||||
pr_err("Invalid table length 0x%x\n", length);
|
||||
return -1;
|
||||
}
|
||||
|
||||
while (length--)
|
||||
checksum += *puchar++;
|
||||
|
||||
if (checksum) {
|
||||
pr_err("Checksum %2.2X should be %2.2X\n",
|
||||
table->csum, table->csum - checksum);
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* sfi_map_table()
|
||||
*
|
||||
* Return address of mapped table
|
||||
* Check for common case that we can re-use mapping to SYST,
|
||||
* which requires syst_pa, syst_va to be initialized.
|
||||
*/
|
||||
struct sfi_table_header *sfi_map_table(u64 pa)
|
||||
{
|
||||
struct sfi_table_header *th;
|
||||
u32 length;
|
||||
|
||||
if (!TABLE_ON_PAGE(syst_pa, pa, sizeof(struct sfi_table_header)))
|
||||
th = sfi_map_memory(pa, sizeof(struct sfi_table_header));
|
||||
else
|
||||
th = (void *)syst_va + (pa - syst_pa);
|
||||
|
||||
/* If table fits on same page as its header, we are done */
|
||||
if (TABLE_ON_PAGE(th, th, th->len))
|
||||
return th;
|
||||
|
||||
/* Entire table does not fit on same page as SYST */
|
||||
length = th->len;
|
||||
if (!TABLE_ON_PAGE(syst_pa, pa, sizeof(struct sfi_table_header)))
|
||||
sfi_unmap_memory(th, sizeof(struct sfi_table_header));
|
||||
|
||||
return sfi_map_memory(pa, length);
|
||||
}
|
||||
|
||||
/*
|
||||
* sfi_unmap_table()
|
||||
*
|
||||
* Undoes effect of sfi_map_table() by unmapping table
|
||||
* if it did not completely fit on same page as SYST.
|
||||
*/
|
||||
void sfi_unmap_table(struct sfi_table_header *th)
|
||||
{
|
||||
if (!TABLE_ON_PAGE(syst_va, th, th->len))
|
||||
sfi_unmap_memory(th, TABLE_ON_PAGE(th, th, th->len) ?
|
||||
sizeof(*th) : th->len);
|
||||
}
|
||||
|
||||
static int sfi_table_check_key(struct sfi_table_header *th,
|
||||
struct sfi_table_key *key)
|
||||
{
|
||||
|
||||
if (strncmp(th->sig, key->sig, SFI_SIGNATURE_SIZE)
|
||||
|| (key->oem_id && strncmp(th->oem_id,
|
||||
key->oem_id, SFI_OEM_ID_SIZE))
|
||||
|| (key->oem_table_id && strncmp(th->oem_table_id,
|
||||
key->oem_table_id, SFI_OEM_TABLE_ID_SIZE)))
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function will be used in 2 cases:
|
||||
* 1. used to enumerate and verify the tables addressed by SYST/XSDT,
|
||||
* thus no signature will be given (in kernel boot phase)
|
||||
* 2. used to parse one specific table, signature must exist, and
|
||||
* the mapped virt address will be returned, and the virt space
|
||||
* will be released by call sfi_put_table() later
|
||||
*
|
||||
* Return value:
|
||||
* NULL: when can't find a table matching the key
|
||||
* ERR_PTR(error): error value
|
||||
* virt table address: when a matched table is found
|
||||
*/
|
||||
struct sfi_table_header *sfi_check_table(u64 pa, struct sfi_table_key *key)
|
||||
{
|
||||
struct sfi_table_header *th;
|
||||
void *ret = NULL;
|
||||
|
||||
th = sfi_map_table(pa);
|
||||
if (!th)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
if (!key->sig) {
|
||||
sfi_print_table_header(pa, th);
|
||||
if (sfi_verify_table(th))
|
||||
ret = ERR_PTR(-EINVAL);
|
||||
} else {
|
||||
if (!sfi_table_check_key(th, key))
|
||||
return th; /* Success */
|
||||
}
|
||||
|
||||
sfi_unmap_table(th);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* sfi_get_table()
|
||||
*
|
||||
* Search SYST for the specified table with the signature in
|
||||
* the key, and return the mapped table
|
||||
*/
|
||||
struct sfi_table_header *sfi_get_table(struct sfi_table_key *key)
|
||||
{
|
||||
struct sfi_table_header *th;
|
||||
u32 tbl_cnt, i;
|
||||
|
||||
tbl_cnt = SFI_GET_NUM_ENTRIES(syst_va, u64);
|
||||
for (i = 0; i < tbl_cnt; i++) {
|
||||
th = sfi_check_table(syst_va->pentry[i], key);
|
||||
if (!IS_ERR(th) && th)
|
||||
return th;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void sfi_put_table(struct sfi_table_header *th)
|
||||
{
|
||||
sfi_unmap_table(th);
|
||||
}
|
||||
|
||||
/* Find table with signature, run handler on it */
|
||||
int sfi_table_parse(char *signature, char *oem_id, char *oem_table_id,
|
||||
sfi_table_handler handler)
|
||||
{
|
||||
struct sfi_table_header *table = NULL;
|
||||
struct sfi_table_key key;
|
||||
int ret = -EINVAL;
|
||||
|
||||
if (sfi_disabled || !handler || !signature)
|
||||
goto exit;
|
||||
|
||||
key.sig = signature;
|
||||
key.oem_id = oem_id;
|
||||
key.oem_table_id = oem_table_id;
|
||||
|
||||
table = sfi_get_table(&key);
|
||||
if (!table)
|
||||
goto exit;
|
||||
|
||||
ret = handler(table);
|
||||
sfi_put_table(table);
|
||||
exit:
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(sfi_table_parse);
|
||||
|
||||
/*
|
||||
* sfi_parse_syst()
|
||||
* Checksum all the tables in SYST and print their headers
|
||||
*
|
||||
* success: set syst_va, return 0
|
||||
*/
|
||||
static int __init sfi_parse_syst(void)
|
||||
{
|
||||
struct sfi_table_key key = SFI_ANY_KEY;
|
||||
int tbl_cnt, i;
|
||||
void *ret;
|
||||
|
||||
syst_va = sfi_map_memory(syst_pa, sizeof(struct sfi_table_simple));
|
||||
if (!syst_va)
|
||||
return -ENOMEM;
|
||||
|
||||
tbl_cnt = SFI_GET_NUM_ENTRIES(syst_va, u64);
|
||||
for (i = 0; i < tbl_cnt; i++) {
|
||||
ret = sfi_check_table(syst_va->pentry[i], &key);
|
||||
if (IS_ERR(ret))
|
||||
return PTR_ERR(ret);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* The OS finds the System Table by searching 16-byte boundaries between
|
||||
* physical address 0x000E0000 and 0x000FFFFF. The OS shall search this region
|
||||
* starting at the low address and shall stop searching when the 1st valid SFI
|
||||
* System Table is found.
|
||||
*
|
||||
* success: set syst_pa, return 0
|
||||
* fail: return -1
|
||||
*/
|
||||
static __init int sfi_find_syst(void)
|
||||
{
|
||||
unsigned long offset, len;
|
||||
void *start;
|
||||
|
||||
len = SFI_SYST_SEARCH_END - SFI_SYST_SEARCH_BEGIN;
|
||||
start = sfi_map_memory(SFI_SYST_SEARCH_BEGIN, len);
|
||||
if (!start)
|
||||
return -1;
|
||||
|
||||
for (offset = 0; offset < len; offset += 16) {
|
||||
struct sfi_table_header *syst_hdr;
|
||||
|
||||
syst_hdr = start + offset;
|
||||
if (strncmp(syst_hdr->sig, SFI_SIG_SYST,
|
||||
SFI_SIGNATURE_SIZE))
|
||||
continue;
|
||||
|
||||
if (syst_hdr->len > PAGE_SIZE)
|
||||
continue;
|
||||
|
||||
sfi_print_table_header(SFI_SYST_SEARCH_BEGIN + offset,
|
||||
syst_hdr);
|
||||
|
||||
if (sfi_verify_table(syst_hdr))
|
||||
continue;
|
||||
|
||||
/*
|
||||
* Enforce SFI spec mandate that SYST reside within a page.
|
||||
*/
|
||||
if (!ON_SAME_PAGE(syst_pa, syst_pa + syst_hdr->len)) {
|
||||
pr_info("SYST 0x%llx + 0x%x crosses page\n",
|
||||
syst_pa, syst_hdr->len);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Success */
|
||||
syst_pa = SFI_SYST_SEARCH_BEGIN + offset;
|
||||
sfi_unmap_memory(start, len);
|
||||
return 0;
|
||||
}
|
||||
|
||||
sfi_unmap_memory(start, len);
|
||||
return -1;
|
||||
}
|
||||
|
||||
void __init sfi_init(void)
|
||||
{
|
||||
if (!acpi_disabled)
|
||||
disable_sfi();
|
||||
|
||||
if (sfi_disabled)
|
||||
return;
|
||||
|
||||
pr_info("Simple Firmware Interface v0.7 http://simplefirmware.org\n");
|
||||
|
||||
if (sfi_find_syst() || sfi_parse_syst() || sfi_platform_init())
|
||||
disable_sfi();
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
void __init sfi_init_late(void)
|
||||
{
|
||||
int length;
|
||||
|
||||
if (sfi_disabled)
|
||||
return;
|
||||
|
||||
length = syst_va->header.len;
|
||||
sfi_unmap_memory(syst_va, sizeof(struct sfi_table_simple));
|
||||
|
||||
/* Use ioremap now after it is ready */
|
||||
sfi_use_ioremap = 1;
|
||||
syst_va = sfi_map_memory(syst_pa, length);
|
||||
|
||||
sfi_acpi_init();
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
/* sfi_core.h Simple Firmware Interface, internal header */
|
||||
|
||||
/*
|
||||
|
||||
This file is provided under a dual BSD/GPLv2 license. When using or
|
||||
redistributing this file, you may do so under either license.
|
||||
|
||||
GPL LICENSE SUMMARY
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
BSD LICENSE
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* 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.
|
||||
|
||||
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.
|
||||
|
||||
*/
|
||||
struct sfi_table_key{
|
||||
char *sig;
|
||||
char *oem_id;
|
||||
char *oem_table_id;
|
||||
};
|
||||
|
||||
#define SFI_ANY_KEY { .sig = NULL, .oem_id = NULL, .oem_table_id = NULL }
|
||||
|
||||
extern int __init sfi_acpi_init(void);
|
||||
extern struct sfi_table_header *sfi_check_table(u64 paddr,
|
||||
struct sfi_table_key *key);
|
||||
struct sfi_table_header *sfi_get_table(struct sfi_table_key *key);
|
||||
extern void sfi_put_table(struct sfi_table_header *table);
|
||||
|
|
@ -0,0 +1,206 @@
|
|||
/* sfi.h Simple Firmware Interface */
|
||||
|
||||
/*
|
||||
|
||||
This file is provided under a dual BSD/GPLv2 license. When using or
|
||||
redistributing this file, you may do so under either license.
|
||||
|
||||
GPL LICENSE SUMMARY
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
BSD LICENSE
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* 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.
|
||||
|
||||
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.
|
||||
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_SFI_H
|
||||
#define _LINUX_SFI_H
|
||||
|
||||
/* 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_SPIB "SPIB"
|
||||
#define SFI_SIG_I2CB "I2CB"
|
||||
#define SFI_SIG_GPEM "GPEM"
|
||||
|
||||
#define SFI_SIGNATURE_SIZE 4
|
||||
#define SFI_OEM_ID_SIZE 6
|
||||
#define SFI_OEM_TABLE_ID_SIZE 8
|
||||
|
||||
#define SFI_SYST_SEARCH_BEGIN 0x000E0000
|
||||
#define SFI_SYST_SEARCH_END 0x000FFFFF
|
||||
|
||||
#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;
|
||||
|
||||
struct sfi_table_simple {
|
||||
struct sfi_table_header header;
|
||||
u64 pentry[1];
|
||||
} __packed;
|
||||
|
||||
/* Comply with UEFI spec 2.1 */
|
||||
struct sfi_mem_entry {
|
||||
u32 type;
|
||||
u64 phys_start;
|
||||
u64 virt_start;
|
||||
u64 pages;
|
||||
u64 attrib;
|
||||
} __packed;
|
||||
|
||||
struct sfi_cpu_table_entry {
|
||||
u32 apic_id;
|
||||
} __packed;
|
||||
|
||||
struct sfi_cstate_table_entry {
|
||||
u32 hint; /* MWAIT hint */
|
||||
u32 latency; /* latency in ms */
|
||||
} __packed;
|
||||
|
||||
struct sfi_apic_table_entry {
|
||||
u64 phys_addr; /* phy base addr for APIC reg */
|
||||
} __packed;
|
||||
|
||||
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;
|
||||
|
||||
struct sfi_wake_table_entry {
|
||||
u64 phys_addr; /* pointer to where the wake vector locates */
|
||||
} __packed;
|
||||
|
||||
struct sfi_timer_table_entry {
|
||||
u64 phys_addr; /* phy base addr for the timer */
|
||||
u32 freq_hz; /* in HZ */
|
||||
u32 irq;
|
||||
} __packed;
|
||||
|
||||
struct sfi_rtc_table_entry {
|
||||
u64 phys_addr; /* phy base addr for the RTC */
|
||||
u32 irq;
|
||||
} __packed;
|
||||
|
||||
struct sfi_spi_table_entry {
|
||||
u16 host_num; /* attached to host 0, 1...*/
|
||||
u16 cs; /* chip select */
|
||||
u16 irq_info;
|
||||
char name[16];
|
||||
u8 dev_info[10];
|
||||
} __packed;
|
||||
|
||||
struct sfi_i2c_table_entry {
|
||||
u16 host_num;
|
||||
u16 addr; /* slave addr */
|
||||
u16 irq_info;
|
||||
char name[16];
|
||||
u8 dev_info[10];
|
||||
} __packed;
|
||||
|
||||
struct sfi_gpe_table_entry {
|
||||
u16 logical_id; /* logical id */
|
||||
u16 phys_id; /* physical GPE id */
|
||||
} __packed;
|
||||
|
||||
|
||||
typedef int (*sfi_table_handler) (struct sfi_table_header *table);
|
||||
|
||||
#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);
|
||||
|
||||
extern int sfi_disabled;
|
||||
static inline void disable_sfi(void)
|
||||
{
|
||||
sfi_disabled = 1;
|
||||
}
|
||||
|
||||
#else /* !CONFIG_SFI */
|
||||
|
||||
static inline void sfi_init(void)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void sfi_init_late(void)
|
||||
{
|
||||
}
|
||||
|
||||
#define sfi_disabled 0
|
||||
|
||||
static inline int sfi_table_parse(char *signature, char *oem_id,
|
||||
char *oem_table_id,
|
||||
sfi_table_handler handler)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
#endif /* !CONFIG_SFI */
|
||||
|
||||
#endif /*_LINUX_SFI_H*/
|
||||
|
|
@ -0,0 +1,93 @@
|
|||
/* sfi.h Simple Firmware Interface */
|
||||
|
||||
/*
|
||||
|
||||
This file is provided under a dual BSD/GPLv2 license. When using or
|
||||
redistributing this file, you may do so under either license.
|
||||
|
||||
GPL LICENSE SUMMARY
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
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.
|
||||
|
||||
BSD LICENSE
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* 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.
|
||||
|
||||
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.
|
||||
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_SFI_ACPI_H
|
||||
#define _LINUX_SFI_ACPI_H
|
||||
|
||||
#ifdef CONFIG_SFI
|
||||
#include <acpi/acpi.h> /* struct acpi_table_header */
|
||||
|
||||
extern int sfi_acpi_table_parse(char *signature, char *oem_id,
|
||||
char *oem_table_id,
|
||||
int (*handler)(struct acpi_table_header *));
|
||||
|
||||
static inline int acpi_sfi_table_parse(char *signature,
|
||||
int (*handler)(struct acpi_table_header *))
|
||||
{
|
||||
if (!acpi_table_parse(signature, handler))
|
||||
return 0;
|
||||
|
||||
return sfi_acpi_table_parse(signature, NULL, NULL, handler);
|
||||
}
|
||||
#else /* !CONFIG_SFI */
|
||||
|
||||
static inline int sfi_acpi_table_parse(char *signature, char *oem_id,
|
||||
char *oem_table_id,
|
||||
int (*handler)(struct acpi_table_header *))
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
static inline int acpi_sfi_table_parse(char *signature,
|
||||
int (*handler)(struct acpi_table_header *))
|
||||
{
|
||||
return acpi_table_parse(signature, handler);
|
||||
}
|
||||
#endif /* !CONFIG_SFI */
|
||||
|
||||
#endif /*_LINUX_SFI_ACPI_H*/
|
||||
|
|
@ -68,6 +68,7 @@
|
|||
#include <linux/async.h>
|
||||
#include <linux/kmemcheck.h>
|
||||
#include <linux/kmemtrace.h>
|
||||
#include <linux/sfi.h>
|
||||
#include <linux/shmem_fs.h>
|
||||
#include <trace/boot.h>
|
||||
|
||||
|
|
@ -689,6 +690,7 @@ asmlinkage void __init start_kernel(void)
|
|||
check_bugs();
|
||||
|
||||
acpi_early_init(); /* before LAPIC and SMP init */
|
||||
sfi_init_late();
|
||||
|
||||
ftrace_init();
|
||||
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче