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Commit 9efff389 authored by Matt Fleming's avatar Matt Fleming
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Merge branch 'arm/efi-stub' into next

parents 6f9dd30c 258f6fd7
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Showing with 170 additions and 159 deletions
arch/ia64/include/asm/io.h
View file @ 9efff389
......@@ -424,6 +424,7 @@ extern void __iomem * ioremap(unsigned long offset, unsigned long size);
extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long size);
extern void iounmap (volatile void __iomem *addr);
extern void __iomem * early_ioremap (unsigned long phys_addr, unsigned long size);
#define early_memremap(phys_addr, size) early_ioremap(phys_addr, size)
extern void early_iounmap (volatile void __iomem *addr, unsigned long size);
static inline void __iomem * ioremap_cache (unsigned long phys_addr, unsigned long size)
{
......
arch/ia64/kernel/efi.c
View file @ 9efff389
......@@ -44,10 +44,15 @@
#define EFI_DEBUG 0
static __initdata unsigned long palo_phys;
static __initdata efi_config_table_type_t arch_tables[] = {
{PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID, "PALO", &palo_phys},
{NULL_GUID, NULL, 0},
};
extern efi_status_t efi_call_phys (void *, ...);
struct efi efi;
EXPORT_SYMBOL(efi);
static efi_runtime_services_t *runtime;
static u64 mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL;
......@@ -423,9 +428,9 @@ static u8 __init palo_checksum(u8 *buffer, u32 length)
* Parse and handle PALO table which is published at:
* http://www.dig64.org/home/DIG64_PALO_R1_0.pdf
*/
static void __init handle_palo(unsigned long palo_phys)
static void __init handle_palo(unsigned long phys_addr)
{
struct palo_table *palo = __va(palo_phys);
struct palo_table *palo = __va(phys_addr);
u8 checksum;
if (strncmp(palo->signature, PALO_SIG, sizeof(PALO_SIG) - 1)) {
......@@ -467,12 +472,10 @@ void __init
efi_init (void)
{
void *efi_map_start, *efi_map_end;
efi_config_table_t *config_tables;
efi_char16_t *c16;
u64 efi_desc_size;
char *cp, vendor[100] = "unknown";
int i;
unsigned long palo_phys;
/*
* It's too early to be able to use the standard kernel command line
......@@ -514,8 +517,6 @@ efi_init (void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff);
config_tables = __va(efi.systab->tables);
/* Show what we know for posterity */
c16 = __va(efi.systab->fw_vendor);
if (c16) {
......@@ -528,43 +529,10 @@ efi_init (void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff, vendor);
efi.mps = EFI_INVALID_TABLE_ADDR;
efi.acpi = EFI_INVALID_TABLE_ADDR;
efi.acpi20 = EFI_INVALID_TABLE_ADDR;
efi.smbios = EFI_INVALID_TABLE_ADDR;
efi.sal_systab = EFI_INVALID_TABLE_ADDR;
efi.boot_info = EFI_INVALID_TABLE_ADDR;
efi.hcdp = EFI_INVALID_TABLE_ADDR;
efi.uga = EFI_INVALID_TABLE_ADDR;
palo_phys = EFI_INVALID_TABLE_ADDR;
for (i = 0; i < (int) efi.systab->nr_tables; i++) {
if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) {
efi.mps = config_tables[i].table;
printk(" MPS=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) {
efi.acpi20 = config_tables[i].table;
printk(" ACPI 2.0=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) {
efi.acpi = config_tables[i].table;
printk(" ACPI=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) {
efi.smbios = config_tables[i].table;
printk(" SMBIOS=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) {
efi.sal_systab = config_tables[i].table;
printk(" SALsystab=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
efi.hcdp = config_tables[i].table;
printk(" HCDP=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid,
PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID) == 0) {
palo_phys = config_tables[i].table;
printk(" PALO=0x%lx", config_tables[i].table);
}
}
printk("\n");
if (efi_config_init(arch_tables) != 0)
return;
if (palo_phys != EFI_INVALID_TABLE_ADDR)
handle_palo(palo_phys);
......
arch/x86/platform/efi/efi.c
View file @ 9efff389
......@@ -60,19 +60,6 @@
static efi_char16_t efi_dummy_name[6] = { 'D', 'U', 'M', 'M', 'Y', 0 };
struct efi __read_mostly efi = {
.mps = EFI_INVALID_TABLE_ADDR,
.acpi = EFI_INVALID_TABLE_ADDR,
.acpi20 = EFI_INVALID_TABLE_ADDR,
.smbios = EFI_INVALID_TABLE_ADDR,
.sal_systab = EFI_INVALID_TABLE_ADDR,
.boot_info = EFI_INVALID_TABLE_ADDR,
.hcdp = EFI_INVALID_TABLE_ADDR,
.uga = EFI_INVALID_TABLE_ADDR,
.uv_systab = EFI_INVALID_TABLE_ADDR,
};
EXPORT_SYMBOL(efi);
struct efi_memory_map memmap;
static struct efi efi_phys __initdata;
......@@ -80,6 +67,13 @@ static efi_system_table_t efi_systab __initdata;
unsigned long x86_efi_facility;
static __initdata efi_config_table_type_t arch_tables[] = {
#ifdef CONFIG_X86_UV
{UV_SYSTEM_TABLE_GUID, "UVsystab", &efi.uv_systab},
#endif
{NULL_GUID, NULL, 0},
};
/*
* Returns 1 if 'facility' is enabled, 0 otherwise.
*/
......@@ -399,6 +393,8 @@ int __init efi_memblock_x86_reserve_range(void)
memblock_reserve(pmap, memmap.nr_map * memmap.desc_size);
efi.memmap = &memmap;
return 0;
}
......@@ -578,80 +574,6 @@ static int __init efi_systab_init(void *phys)
return 0;
}
static int __init efi_config_init(u64 tables, int nr_tables)
{
void *config_tables, *tablep;
int i, sz;
if (efi_enabled(EFI_64BIT))
sz = sizeof(efi_config_table_64_t);
else
sz = sizeof(efi_config_table_32_t);
/*
* Let's see what config tables the firmware passed to us.
*/
config_tables = early_ioremap(tables, nr_tables * sz);
if (config_tables == NULL) {
pr_err("Could not map Configuration table!\n");
return -ENOMEM;
}
tablep = config_tables;
pr_info("");
for (i = 0; i < efi.systab->nr_tables; i++) {
efi_guid_t guid;
unsigned long table;
if (efi_enabled(EFI_64BIT)) {
u64 table64;
guid = ((efi_config_table_64_t *)tablep)->guid;
table64 = ((efi_config_table_64_t *)tablep)->table;
table = table64;
#ifdef CONFIG_X86_32
if (table64 >> 32) {
pr_cont("\n");
pr_err("Table located above 4GB, disabling EFI.\n");
early_iounmap(config_tables,
efi.systab->nr_tables * sz);
return -EINVAL;
}
#endif
} else {
guid = ((efi_config_table_32_t *)tablep)->guid;
table = ((efi_config_table_32_t *)tablep)->table;
}
if (!efi_guidcmp(guid, MPS_TABLE_GUID)) {
efi.mps = table;
pr_cont(" MPS=0x%lx ", table);
} else if (!efi_guidcmp(guid, ACPI_20_TABLE_GUID)) {
efi.acpi20 = table;
pr_cont(" ACPI 2.0=0x%lx ", table);
} else if (!efi_guidcmp(guid, ACPI_TABLE_GUID)) {
efi.acpi = table;
pr_cont(" ACPI=0x%lx ", table);
} else if (!efi_guidcmp(guid, SMBIOS_TABLE_GUID)) {
efi.smbios = table;
pr_cont(" SMBIOS=0x%lx ", table);
#ifdef CONFIG_X86_UV
} else if (!efi_guidcmp(guid, UV_SYSTEM_TABLE_GUID)) {
efi.uv_systab = table;
pr_cont(" UVsystab=0x%lx ", table);
#endif
} else if (!efi_guidcmp(guid, HCDP_TABLE_GUID)) {
efi.hcdp = table;
pr_cont(" HCDP=0x%lx ", table);
} else if (!efi_guidcmp(guid, UGA_IO_PROTOCOL_GUID)) {
efi.uga = table;
pr_cont(" UGA=0x%lx ", table);
}
tablep += sz;
}
pr_cont("\n");
early_iounmap(config_tables, efi.systab->nr_tables * sz);
return 0;
}
static int __init efi_runtime_init(void)
{
efi_runtime_services_t *runtime;
......@@ -745,7 +667,7 @@ void __init efi_init(void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff, vendor);
if (efi_config_init(efi.systab->tables, efi.systab->nr_tables))
if (efi_config_init(arch_tables))
return;
set_bit(EFI_CONFIG_TABLES, &x86_efi_facility);
......@@ -816,34 +738,6 @@ static void __init runtime_code_page_mkexec(void)
}
}
/*
* We can't ioremap data in EFI boot services RAM, because we've already mapped
* it as RAM. So, look it up in the existing EFI memory map instead. Only
* callable after efi_enter_virtual_mode and before efi_free_boot_services.
*/
void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
{
void *p;
if (WARN_ON(!memmap.map))
return NULL;
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
efi_memory_desc_t *md = p;
u64 size = md->num_pages << EFI_PAGE_SHIFT;
u64 end = md->phys_addr + size;
if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
md->type != EFI_BOOT_SERVICES_CODE &&
md->type != EFI_BOOT_SERVICES_DATA)
continue;
if (!md->virt_addr)
continue;
if (phys_addr >= md->phys_addr && phys_addr < end) {
phys_addr += md->virt_addr - md->phys_addr;
return (__force void __iomem *)(unsigned long)phys_addr;
}
}
return NULL;
}
void efi_memory_uc(u64 addr, unsigned long size)
{
unsigned long page_shift = 1UL << EFI_PAGE_SHIFT;
......
drivers/firmware/efi/efi.c
View file @ 9efff389
......@@ -13,11 +13,27 @@
* This file is released under the GPLv2.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kobject.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/efi.h>
#include <linux/io.h>
struct efi __read_mostly efi = {
.mps = EFI_INVALID_TABLE_ADDR,
.acpi = EFI_INVALID_TABLE_ADDR,
.acpi20 = EFI_INVALID_TABLE_ADDR,
.smbios = EFI_INVALID_TABLE_ADDR,
.sal_systab = EFI_INVALID_TABLE_ADDR,
.boot_info = EFI_INVALID_TABLE_ADDR,
.hcdp = EFI_INVALID_TABLE_ADDR,
.uga = EFI_INVALID_TABLE_ADDR,
.uv_systab = EFI_INVALID_TABLE_ADDR,
};
EXPORT_SYMBOL(efi);
static struct kobject *efi_kobj;
static struct kobject *efivars_kobj;
......@@ -132,3 +148,127 @@ static int __init efisubsys_init(void)
}
subsys_initcall(efisubsys_init);
/*
* We can't ioremap data in EFI boot services RAM, because we've already mapped
* it as RAM. So, look it up in the existing EFI memory map instead. Only
* callable after efi_enter_virtual_mode and before efi_free_boot_services.
*/
void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
{
struct efi_memory_map *map;
void *p;
map = efi.memmap;
if (!map)
return NULL;
if (WARN_ON(!map->map))
return NULL;
for (p = map->map; p < map->map_end; p += map->desc_size) {
efi_memory_desc_t *md = p;
u64 size = md->num_pages << EFI_PAGE_SHIFT;
u64 end = md->phys_addr + size;
if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
md->type != EFI_BOOT_SERVICES_CODE &&
md->type != EFI_BOOT_SERVICES_DATA)
continue;
if (!md->virt_addr)
continue;
if (phys_addr >= md->phys_addr && phys_addr < end) {
phys_addr += md->virt_addr - md->phys_addr;
return (__force void __iomem *)(unsigned long)phys_addr;
}
}
return NULL;
}
static __initdata efi_config_table_type_t common_tables[] = {
{ACPI_20_TABLE_GUID, "ACPI 2.0", &efi.acpi20},
{ACPI_TABLE_GUID, "ACPI", &efi.acpi},
{HCDP_TABLE_GUID, "HCDP", &efi.hcdp},
{MPS_TABLE_GUID, "MPS", &efi.mps},
{SAL_SYSTEM_TABLE_GUID, "SALsystab", &efi.sal_systab},
{SMBIOS_TABLE_GUID, "SMBIOS", &efi.smbios},
{UGA_IO_PROTOCOL_GUID, "UGA", &efi.uga},
{NULL_GUID, NULL, 0},
};
static __init int match_config_table(efi_guid_t *guid,
unsigned long table,
efi_config_table_type_t *table_types)
{
u8 str[EFI_VARIABLE_GUID_LEN + 1];
int i;
if (table_types) {
efi_guid_unparse(guid, str);
for (i = 0; efi_guidcmp(table_types[i].guid, NULL_GUID); i++) {
efi_guid_unparse(&table_types[i].guid, str);
if (!efi_guidcmp(*guid, table_types[i].guid)) {
*(table_types[i].ptr) = table;
pr_cont(" %s=0x%lx ",
table_types[i].name, table);
return 1;
}
}
}
return 0;
}
int __init efi_config_init(efi_config_table_type_t *arch_tables)
{
void *config_tables, *tablep;
int i, sz;
if (efi_enabled(EFI_64BIT))
sz = sizeof(efi_config_table_64_t);
else
sz = sizeof(efi_config_table_32_t);
/*
* Let's see what config tables the firmware passed to us.
*/
config_tables = early_memremap(efi.systab->tables,
efi.systab->nr_tables * sz);
if (config_tables == NULL) {
pr_err("Could not map Configuration table!\n");
return -ENOMEM;
}
tablep = config_tables;
pr_info("");
for (i = 0; i < efi.systab->nr_tables; i++) {
efi_guid_t guid;
unsigned long table;
if (efi_enabled(EFI_64BIT)) {
u64 table64;
guid = ((efi_config_table_64_t *)tablep)->guid;
table64 = ((efi_config_table_64_t *)tablep)->table;
table = table64;
#ifndef CONFIG_64BIT
if (table64 >> 32) {
pr_cont("\n");
pr_err("Table located above 4GB, disabling EFI.\n");
early_iounmap(config_tables,
efi.systab->nr_tables * sz);
return -EINVAL;
}
#endif
} else {
guid = ((efi_config_table_32_t *)tablep)->guid;
table = ((efi_config_table_32_t *)tablep)->table;
}
if (!match_config_table(&guid, table, common_tables))
match_config_table(&guid, table, arch_tables);
tablep += sz;
}
pr_cont("\n");
early_iounmap(config_tables, efi.systab->nr_tables * sz);
return 0;
}
include/linux/efi.h
View file @ 9efff389
......@@ -404,6 +404,12 @@ typedef struct {
unsigned long table;
} efi_config_table_t;
typedef struct {
efi_guid_t guid;
const char *name;
unsigned long *ptr;
} efi_config_table_type_t;
#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
......@@ -552,6 +558,7 @@ extern struct efi {
efi_get_next_high_mono_count_t *get_next_high_mono_count;
efi_reset_system_t *reset_system;
efi_set_virtual_address_map_t *set_virtual_address_map;
struct efi_memory_map *memmap;
} efi;
static inline int
......@@ -587,6 +594,7 @@ static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned lon
}
#endif
extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
extern int efi_config_init(efi_config_table_type_t *arch_tables);
extern u64 efi_get_iobase (void);
extern u32 efi_mem_type (unsigned long phys_addr);
extern u64 efi_mem_attributes (unsigned long phys_addr);
......
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