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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-02-11 15:40:02 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2021-02-15 20:09:46 +0100
commit4590d98f5a4f466d17e5c81d7c9fc796da9a8cee (patch)
tree7e9dd8cece2b3e5b1047817cd406920bb8f1cd22 /drivers
parent73f70d6c200ba85f61818ed3efe7f800c78d2953 (diff)
sfi: Remove framework for deprecated firmware
SFI-based platforms are gone. So does this framework. This removes mention of SFI through the drivers and other code as well. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/Makefile2
-rw-r--r--drivers/platform/x86/intel_scu_pcidrv.c22
-rw-r--r--drivers/sfi/Kconfig18
-rw-r--r--drivers/sfi/Makefile4
-rw-r--r--drivers/sfi/sfi_acpi.c214
-rw-r--r--drivers/sfi/sfi_core.c522
-rw-r--r--drivers/sfi/sfi_core.h81
7 files changed, 5 insertions, 858 deletions
diff --git a/drivers/Makefile b/drivers/Makefile
index fd11b9ac4cc3..b2af1514a6b3 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -27,7 +27,7 @@ obj-y += idle/
obj-y += char/ipmi/
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/
diff --git a/drivers/platform/x86/intel_scu_pcidrv.c b/drivers/platform/x86/intel_scu_pcidrv.c
index 8c5fd8240da9..80abc708e4f2 100644
--- a/drivers/platform/x86/intel_scu_pcidrv.c
+++ b/drivers/platform/x86/intel_scu_pcidrv.c
@@ -17,7 +17,6 @@
static int intel_scu_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
- void (*setup_fn)(void) = (void (*)(void))id->driver_data;
struct intel_scu_ipc_data scu_data = {};
struct intel_scu_ipc_dev *scu;
int ret;
@@ -30,27 +29,14 @@ static int intel_scu_pci_probe(struct pci_dev *pdev,
scu_data.irq = pdev->irq;
scu = intel_scu_ipc_register(&pdev->dev, &scu_data);
- if (IS_ERR(scu))
- return PTR_ERR(scu);
-
- if (setup_fn)
- setup_fn();
- return 0;
-}
-
-static void intel_mid_scu_setup(void)
-{
- intel_scu_devices_create();
+ return PTR_ERR_OR_ZERO(scu);
}
static const struct pci_device_id pci_ids[] = {
- { PCI_VDEVICE(INTEL, 0x080e),
- .driver_data = (kernel_ulong_t)intel_mid_scu_setup },
- { PCI_VDEVICE(INTEL, 0x08ea),
- .driver_data = (kernel_ulong_t)intel_mid_scu_setup },
+ { PCI_VDEVICE(INTEL, 0x080e) },
+ { PCI_VDEVICE(INTEL, 0x08ea) },
{ PCI_VDEVICE(INTEL, 0x0a94) },
- { PCI_VDEVICE(INTEL, 0x11a0),
- .driver_data = (kernel_ulong_t)intel_mid_scu_setup },
+ { PCI_VDEVICE(INTEL, 0x11a0) },
{ PCI_VDEVICE(INTEL, 0x1a94) },
{ PCI_VDEVICE(INTEL, 0x5a94) },
{}
diff --git a/drivers/sfi/Kconfig b/drivers/sfi/Kconfig
deleted file mode 100644
index 3d0b64db214e..000000000000
--- a/drivers/sfi/Kconfig
+++ /dev/null
@@ -1,18 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# 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.
diff --git a/drivers/sfi/Makefile b/drivers/sfi/Makefile
deleted file mode 100644
index ca9436b12386..000000000000
--- a/drivers/sfi/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y += sfi_acpi.o
-obj-y += sfi_core.o
-
diff --git a/drivers/sfi/sfi_acpi.c b/drivers/sfi/sfi_acpi.c
deleted file mode 100644
index d277b36eb389..000000000000
--- a/drivers/sfi/sfi_acpi.c
+++ /dev/null
@@ -1,214 +0,0 @@
-/* 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 <linux/sfi_acpi.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;
-}
-
-static ssize_t sfi_acpi_table_show(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr, char *buf,
- loff_t offset, size_t count)
-{
- struct sfi_table_attr *tbl_attr =
- container_of(bin_attr, struct sfi_table_attr, attr);
- struct acpi_table_header *th = NULL;
- struct sfi_table_key key;
- ssize_t cnt;
-
- key.sig = tbl_attr->name;
- key.oem_id = NULL;
- key.oem_table_id = NULL;
-
- th = sfi_acpi_get_table(&key);
- if (!th)
- return 0;
-
- cnt = memory_read_from_buffer(buf, count, &offset,
- th, th->length);
- sfi_acpi_put_table(th);
-
- return cnt;
-}
-
-
-void __init sfi_acpi_sysfs_init(void)
-{
- u32 tbl_cnt, i;
- struct sfi_table_attr *tbl_attr;
-
- tbl_cnt = XSDT_GET_NUM_ENTRIES(xsdt_va, u64);
- for (i = 0; i < tbl_cnt; i++) {
- tbl_attr =
- sfi_sysfs_install_table(xsdt_va->table_offset_entry[i]);
- tbl_attr->attr.read = sfi_acpi_table_show;
- }
-
- return;
-}
diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c
deleted file mode 100644
index a5136901dd8a..000000000000
--- a/drivers/sfi/sfi_core.c
+++ /dev/null
@@ -1,522 +0,0 @@
-/* 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/memblock.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 <linux/slab.h>
-#include <linux/io.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 memremap() is ready, so a flag is needed
- * to indicating this
- */
-static u32 sfi_use_memremap __read_mostly;
-
-/*
- * sfi_un/map_memory calls early_memremap/memunmap which is a __init function
- * and introduces section mismatch. So use __ref to make it calm.
- */
-static void __iomem * __ref sfi_map_memory(u64 phys, u32 size)
-{
- if (!phys || !size)
- return NULL;
-
- if (sfi_use_memremap)
- return memremap(phys, size, MEMREMAP_WB);
- else
- return early_memremap(phys, size);
-}
-
-static void __ref sfi_unmap_memory(void __iomem *virt, u32 size)
-{
- if (!virt || !size)
- return;
-
- if (sfi_use_memremap)
- memunmap(virt);
- else
- early_memunmap(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 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.
- */
-static 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.
- */
-static 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
- *
- * This two cases are from two different functions with two different
- * sections and causes section mismatch warning. So use __ref to tell
- * modpost not to make any noise.
- *
- * 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 *
- __ref 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;
-}
-
-static struct kobject *sfi_kobj;
-static struct kobject *tables_kobj;
-
-static ssize_t sfi_table_show(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr, char *buf,
- loff_t offset, size_t count)
-{
- struct sfi_table_attr *tbl_attr =
- container_of(bin_attr, struct sfi_table_attr, attr);
- struct sfi_table_header *th = NULL;
- struct sfi_table_key key;
- ssize_t cnt;
-
- key.sig = tbl_attr->name;
- key.oem_id = NULL;
- key.oem_table_id = NULL;
-
- if (strncmp(SFI_SIG_SYST, tbl_attr->name, SFI_SIGNATURE_SIZE)) {
- th = sfi_get_table(&key);
- if (!th)
- return 0;
-
- cnt = memory_read_from_buffer(buf, count, &offset,
- th, th->len);
- sfi_put_table(th);
- } else
- cnt = memory_read_from_buffer(buf, count, &offset,
- syst_va, syst_va->header.len);
-
- return cnt;
-}
-
-struct sfi_table_attr __init *sfi_sysfs_install_table(u64 pa)
-{
- struct sfi_table_attr *tbl_attr;
- struct sfi_table_header *th;
- int ret;
-
- tbl_attr = kzalloc(sizeof(struct sfi_table_attr), GFP_KERNEL);
- if (!tbl_attr)
- return NULL;
-
- th = sfi_map_table(pa);
- if (!th || !th->sig[0]) {
- kfree(tbl_attr);
- return NULL;
- }
-
- sysfs_attr_init(&tbl_attr->attr.attr);
- memcpy(tbl_attr->name, th->sig, SFI_SIGNATURE_SIZE);
-
- tbl_attr->attr.size = 0;
- tbl_attr->attr.read = sfi_table_show;
- tbl_attr->attr.attr.name = tbl_attr->name;
- tbl_attr->attr.attr.mode = 0400;
-
- ret = sysfs_create_bin_file(tables_kobj,
- &tbl_attr->attr);
- if (ret) {
- kfree(tbl_attr);
- tbl_attr = NULL;
- }
-
- sfi_unmap_table(th);
- return tbl_attr;
-}
-
-static int __init sfi_sysfs_init(void)
-{
- int tbl_cnt, i;
-
- if (sfi_disabled)
- return 0;
-
- sfi_kobj = kobject_create_and_add("sfi", firmware_kobj);
- if (!sfi_kobj)
- return 0;
-
- tables_kobj = kobject_create_and_add("tables", sfi_kobj);
- if (!tables_kobj) {
- kobject_put(sfi_kobj);
- return 0;
- }
-
- sfi_sysfs_install_table(syst_pa);
-
- tbl_cnt = SFI_GET_NUM_ENTRIES(syst_va, u64);
-
- for (i = 0; i < tbl_cnt; i++)
- sfi_sysfs_install_table(syst_va->pentry[i]);
-
- sfi_acpi_sysfs_init();
- kobject_uevent(sfi_kobj, KOBJ_ADD);
- kobject_uevent(tables_kobj, KOBJ_ADD);
- pr_info("SFI sysfs interfaces init success\n");
- return 0;
-}
-
-void __init sfi_init(void)
-{
- if (!acpi_disabled)
- disable_sfi();
-
- if (sfi_disabled)
- return;
-
- pr_info("Simple Firmware Interface v0.81 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 memremap now after it is ready */
- sfi_use_memremap = 1;
- syst_va = sfi_map_memory(syst_pa, length);
-
- sfi_acpi_init();
-}
-
-/*
- * The reason we put it here because we need wait till the /sys/firmware
- * is setup, then our interface can be registered in /sys/firmware/sfi
- */
-core_initcall(sfi_sysfs_init);
diff --git a/drivers/sfi/sfi_core.h b/drivers/sfi/sfi_core.h
deleted file mode 100644
index 1d5cfe854cf7..000000000000
--- a/drivers/sfi/sfi_core.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/* 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.
-
-*/
-
-#include <linux/sysfs.h>
-
-struct sfi_table_key{
- char *sig;
- char *oem_id;
- char *oem_table_id;
-};
-
-/* sysfs interface */
-struct sfi_table_attr {
- struct bin_attribute attr;
- char name[8];
-};
-
-#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);
-extern struct sfi_table_attr __init *sfi_sysfs_install_table(u64 pa);
-extern void __init sfi_acpi_sysfs_init(void);