This is useful if you cannot or don't want to change the
command-line options your boot loader passes to the kernel.
+config EFI_STUB
+ bool
+
config EFI
bool "UEFI runtime support"
depends on OF && !CPU_BIG_ENDIAN
select LIBFDT
select UCS2_STRING
select EFI_PARAMS_FROM_FDT
+ select EFI_RUNTIME_WRAPPERS
+ select EFI_STUB
+ select EFI_ARMSTUB
default y
help
This option provides support for runtime services provided
core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
libs-y := arch/arm64/lib/ $(libs-y)
libs-y += $(LIBGCC)
+libs-$(CONFIG_EFI_STUB) += drivers/firmware/efi/libstub/
# Default target when executing plain make
KBUILD_IMAGE := Image.gz
#define _ASM_EFI_H
#include <asm/io.h>
+#include <asm/neon.h>
#ifdef CONFIG_EFI
extern void efi_init(void);
#define efi_idmap_init()
#endif
+#define efi_call_virt(f, ...) \
+({ \
+ efi_##f##_t *__f = efi.systab->runtime->f; \
+ efi_status_t __s; \
+ \
+ kernel_neon_begin(); \
+ __s = __f(__VA_ARGS__); \
+ kernel_neon_end(); \
+ __s; \
+})
+
+#define __efi_call_virt(f, ...) \
+({ \
+ efi_##f##_t *__f = efi.systab->runtime->f; \
+ \
+ kernel_neon_begin(); \
+ __f(__VA_ARGS__); \
+ kernel_neon_end(); \
+})
+
+/* arch specific definitions used by the stub code */
+
+/*
+ * AArch64 requires the DTB to be 8-byte aligned in the first 512MiB from
+ * start of kernel and may not cross a 2MiB boundary. We set alignment to
+ * 2MiB so we know it won't cross a 2MiB boundary.
+ */
+#define EFI_FDT_ALIGN SZ_2M /* used by allocate_new_fdt_and_exit_boot() */
+#define MAX_FDT_OFFSET SZ_512M
+
+#define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__)
+
#endif /* _ASM_EFI_H */
CPPFLAGS_vmlinux.lds := -DTEXT_OFFSET=$(TEXT_OFFSET)
AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
-CFLAGS_efi-stub.o := -DTEXT_OFFSET=$(TEXT_OFFSET) \
- -I$(src)/../../../scripts/dtc/libfdt
+CFLAGS_efi-stub.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_insn.o = -pg
*
*/
#include <linux/efi.h>
-#include <linux/libfdt.h>
+#include <asm/efi.h>
#include <asm/sections.h>
-/*
- * AArch64 requires the DTB to be 8-byte aligned in the first 512MiB from
- * start of kernel and may not cross a 2MiB boundary. We set alignment to
- * 2MiB so we know it won't cross a 2MiB boundary.
- */
-#define EFI_FDT_ALIGN SZ_2M /* used by allocate_new_fdt_and_exit_boot() */
-#define MAX_FDT_OFFSET SZ_512M
-
-#define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__)
-
-static void efi_char16_printk(efi_system_table_t *sys_table_arg,
- efi_char16_t *str);
-
-static efi_status_t efi_open_volume(efi_system_table_t *sys_table,
- void *__image, void **__fh);
-static efi_status_t efi_file_close(void *handle);
-
-static efi_status_t
-efi_file_read(void *handle, unsigned long *size, void *addr);
-
-static efi_status_t
-efi_file_size(efi_system_table_t *sys_table, void *__fh,
- efi_char16_t *filename_16, void **handle, u64 *file_sz);
-
-/* Include shared EFI stub code */
-#include "../../../drivers/firmware/efi/efi-stub-helper.c"
-#include "../../../drivers/firmware/efi/fdt.c"
-#include "../../../drivers/firmware/efi/arm-stub.c"
-
-
-static efi_status_t handle_kernel_image(efi_system_table_t *sys_table,
- unsigned long *image_addr,
- unsigned long *image_size,
- unsigned long *reserve_addr,
- unsigned long *reserve_size,
- unsigned long dram_base,
- efi_loaded_image_t *image)
+efi_status_t handle_kernel_image(efi_system_table_t *sys_table,
+ unsigned long *image_addr,
+ unsigned long *image_size,
+ unsigned long *reserve_addr,
+ unsigned long *reserve_size,
+ unsigned long dram_base,
+ efi_loaded_image_t *image)
{
efi_status_t status;
unsigned long kernel_size, kernel_memsize = 0;
if (*image_addr != (dram_base + TEXT_OFFSET)) {
pr_efi_err(sys_table, "Failed to alloc kernel memory\n");
efi_free(sys_table, kernel_memsize, *image_addr);
- return EFI_ERROR;
+ return EFI_LOAD_ERROR;
}
*image_size = kernel_memsize;
}
for_each_efi_memory_desc(&memmap, md) {
if (!(md->attribute & EFI_MEMORY_RUNTIME))
continue;
- if (remap_region(md, &virt_md))
- ++count;
+ if (!remap_region(md, &virt_md))
+ goto err_unmap;
+ ++count;
}
efi.systab = (__force void *)efi_lookup_mapped_addr(efi_system_table);
- if (efi.systab)
- set_bit(EFI_SYSTEM_TABLES, &efi.flags);
+ if (!efi.systab) {
+ /*
+ * If we have no virtual mapping for the System Table at this
+ * point, the memory map doesn't cover the physical offset where
+ * it resides. This means the System Table will be inaccessible
+ * to Runtime Services themselves once the virtual mapping is
+ * installed.
+ */
+ pr_err("Failed to remap EFI System Table -- buggy firmware?\n");
+ goto err_unmap;
+ }
+ set_bit(EFI_SYSTEM_TABLES, &efi.flags);
local_irq_save(flags);
cpu_switch_mm(idmap_pg_dir, &init_mm);
/* Set up runtime services function pointers */
runtime = efi.systab->runtime;
- efi.get_time = runtime->get_time;
- efi.set_time = runtime->set_time;
- efi.get_wakeup_time = runtime->get_wakeup_time;
- efi.set_wakeup_time = runtime->set_wakeup_time;
- efi.get_variable = runtime->get_variable;
- efi.get_next_variable = runtime->get_next_variable;
- efi.set_variable = runtime->set_variable;
- efi.query_variable_info = runtime->query_variable_info;
- efi.update_capsule = runtime->update_capsule;
- efi.query_capsule_caps = runtime->query_capsule_caps;
- efi.get_next_high_mono_count = runtime->get_next_high_mono_count;
- efi.reset_system = runtime->reset_system;
-
+ efi_native_runtime_setup();
set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
return 0;
+
+err_unmap:
+ /* unmap all mappings that succeeded: there are 'count' of those */
+ for (virt_md = virtmap; count--; virt_md += memmap.desc_size) {
+ md = virt_md;
+ iounmap((__force void __iomem *)md->virt_addr);
+ }
+ kfree(virtmap);
+ return -1;
}
early_initcall(arm64_enter_virtual_mode);
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);
+#define early_memunmap(addr, size) early_iounmap(addr, size)
static inline void __iomem * ioremap_cache (unsigned long phys_addr, unsigned long size)
{
return ioremap(phys_addr, size);
machine_restart (char *restart_cmd)
{
(void) notify_die(DIE_MACHINE_RESTART, restart_cmd, NULL, 0, 0, 0);
- (*efi.reset_system)(EFI_RESET_WARM, 0, 0, NULL);
+ efi_reboot(REBOOT_WARM, NULL);
}
void
bool "EFI runtime service support"
depends on ACPI
select UCS2_STRING
+ select EFI_RUNTIME_WRAPPERS
---help---
This enables the kernel to use EFI runtime services that are
available (such as the EFI variable services).
$(obj)/eboot.o: KBUILD_CFLAGS += -fshort-wchar -mno-red-zone
ifeq ($(CONFIG_EFI_STUB), y)
- VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
+ VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o \
+ $(objtree)/drivers/firmware/efi/libstub/lib.a
endif
$(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
static efi_system_table_t *sys_table;
-static struct efi_config *efi_early;
-
-#define efi_call_early(f, ...) \
- efi_early->call(efi_early->f, __VA_ARGS__);
+struct efi_config *efi_early;
#define BOOT_SERVICES(bits) \
static void setup_boot_services##bits(struct efi_config *c) \
BOOT_SERVICES(32);
BOOT_SERVICES(64);
-static void efi_printk(efi_system_table_t *, char *);
-static void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
+void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
static efi_status_t
__file_size32(void *__fh, efi_char16_t *filename_16,
return status;
}
-static efi_status_t
+efi_status_t
efi_file_size(efi_system_table_t *sys_table, void *__fh,
efi_char16_t *filename_16, void **handle, u64 *file_sz)
{
return __file_size32(__fh, filename_16, handle, file_sz);
}
-static inline efi_status_t
+efi_status_t
efi_file_read(void *handle, unsigned long *size, void *addr)
{
unsigned long func;
}
}
-static inline efi_status_t efi_file_close(void *handle)
+efi_status_t efi_file_close(void *handle)
{
if (efi_early->is64) {
efi_file_handle_64_t *fh = handle;
return status;
}
-static inline efi_status_t
+efi_status_t
efi_open_volume(efi_system_table_t *sys_table, void *__image, void **__fh)
{
if (efi_early->is64)
return __open_volume32(__image, __fh);
}
-static void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
+void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
{
unsigned long output_string;
size_t offset;
}
}
-#include "../../../../drivers/firmware/efi/efi-stub-helper.c"
-
static void find_bits(unsigned long mask, u8 *pos, u8 *size)
{
u8 first, len;
int i;
unsigned long ramdisk_addr;
unsigned long ramdisk_size;
+ unsigned long initrd_addr_max;
efi_early = c;
sys_table = (efi_system_table_t *)(unsigned long)efi_early->table;
memset(sdt, 0, sizeof(*sdt));
+ if (hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G)
+ initrd_addr_max = -1UL;
+ else
+ initrd_addr_max = hdr->initrd_addr_max;
+
status = handle_cmdline_files(sys_table, image,
(char *)(unsigned long)hdr->cmd_line_ptr,
- "initrd=", hdr->initrd_addr_max,
+ "initrd=", initrd_addr_max,
&ramdisk_addr, &ramdisk_size);
if (status != EFI_SUCCESS)
goto fail2;
- hdr->ramdisk_image = ramdisk_addr;
- hdr->ramdisk_size = ramdisk_size;
+ hdr->ramdisk_image = ramdisk_addr & 0xffffffff;
+ hdr->ramdisk_size = ramdisk_size & 0xffffffff;
+ boot_params->ext_ramdisk_image = (u64)ramdisk_addr >> 32;
+ boot_params->ext_ramdisk_size = (u64)ramdisk_size >> 32;
return boot_params;
fail2:
setup_graphics(boot_params);
- setup_efi_pci(boot_params);
+ status = setup_efi_pci(boot_params);
+ if (status != EFI_SUCCESS) {
+ efi_printk(sys_table, "setup_efi_pci() failed!\n");
+ }
status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
sizeof(*gdt), (void **)&gdt);
hdr->init_size, hdr->init_size,
hdr->pref_address,
hdr->kernel_alignment);
- if (status != EFI_SUCCESS)
+ if (status != EFI_SUCCESS) {
+ efi_printk(sys_table, "efi_relocate_kernel() failed!\n");
goto fail;
+ }
hdr->pref_address = hdr->code32_start;
hdr->code32_start = bzimage_addr;
}
status = exit_boot(boot_params, handle, is64);
- if (status != EFI_SUCCESS)
+ if (status != EFI_SUCCESS) {
+ efi_printk(sys_table, "exit_boot() failed!\n");
goto fail;
+ }
memset((char *)gdt->address, 0x0, gdt->size);
desc = (struct desc_struct *)gdt->address;
return boot_params;
fail:
+ efi_printk(sys_table, "efi_main() failed!\n");
return NULL;
}
void *blt;
};
-struct efi_config {
- u64 image_handle;
- u64 table;
- u64 allocate_pool;
- u64 allocate_pages;
- u64 get_memory_map;
- u64 free_pool;
- u64 free_pages;
- u64 locate_handle;
- u64 handle_protocol;
- u64 exit_boot_services;
- u64 text_output;
- efi_status_t (*call)(unsigned long, ...);
- bool is64;
-} __packed;
-
#endif /* BOOT_COMPRESSED_EBOOT_H */
#else
.quad 0 # ImageBase
#endif
- .long 0x20 # SectionAlignment
+ .long CONFIG_PHYSICAL_ALIGN # SectionAlignment
.long 0x20 # FileAlignment
.word 0 # MajorOperatingSystemVersion
.word 0 # MinorOperatingSystemVersion
extern void __init efi_runtime_mkexec(void);
extern void __init efi_dump_pagetable(void);
extern void __init efi_apply_memmap_quirks(void);
+extern int __init efi_reuse_config(u64 tables, int nr_tables);
+extern void efi_delete_dummy_variable(void);
struct efi_setup_data {
u64 fw_vendor;
return EFI_SUCCESS;
}
#endif /* CONFIG_EFI_MIXED */
+
+
+/* arch specific definitions used by the stub code */
+
+struct efi_config {
+ u64 image_handle;
+ u64 table;
+ u64 allocate_pool;
+ u64 allocate_pages;
+ u64 get_memory_map;
+ u64 free_pool;
+ u64 free_pages;
+ u64 locate_handle;
+ u64 handle_protocol;
+ u64 exit_boot_services;
+ u64 text_output;
+ efi_status_t (*call)(unsigned long, ...);
+ bool is64;
+} __packed;
+
+extern struct efi_config *efi_early;
+
+#define efi_call_early(f, ...) \
+ efi_early->call(efi_early->f, __VA_ARGS__);
+
+extern bool efi_reboot_required(void);
+
#else
/*
* IF EFI is not configured, have the EFI calls return -ENOSYS.
#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS)
#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS)
static inline void parse_efi_setup(u64 phys_addr, u32 data_len) {}
+static inline bool efi_reboot_required(void)
+{
+ return false;
+}
#endif /* CONFIG_EFI */
#endif /* _ASM_X86_EFI_H */
#include <linux/mc146818rtc.h>
#include <asm/realmode.h>
#include <asm/x86_init.h>
+#include <asm/efi.h>
/*
* Power off function, if any
static int __init reboot_init(void)
{
+ int rv;
+
/*
* Only do the DMI check if reboot_type hasn't been overridden
* on the command line
*/
- if (reboot_default)
- dmi_check_system(reboot_dmi_table);
+ if (!reboot_default)
+ return 0;
+
+ /*
+ * The DMI quirks table takes precedence. If no quirks entry
+ * matches and the ACPI Hardware Reduced bit is set, force EFI
+ * reboot.
+ */
+ rv = dmi_check_system(reboot_dmi_table);
+
+ if (!rv && efi_reboot_required())
+ reboot_type = BOOT_EFI;
+
return 0;
}
core_initcall(reboot_init);
break;
case BOOT_EFI:
- if (efi_enabled(EFI_RUNTIME_SERVICES))
- efi.reset_system(reboot_mode == REBOOT_WARM ?
- EFI_RESET_WARM :
- EFI_RESET_COLD,
- EFI_SUCCESS, 0, NULL);
+ efi_reboot(reboot_mode, NULL);
reboot_type = BOOT_BIOS;
break;
#endif
#ifdef CONFIG_EFI
if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
- "EL32", 4)) {
+ EFI32_LOADER_SIGNATURE, 4)) {
set_bit(EFI_BOOT, &efi.flags);
} else if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
- "EL64", 4)) {
+ EFI64_LOADER_SIGNATURE, 4)) {
set_bit(EFI_BOOT, &efi.flags);
set_bit(EFI_64BIT, &efi.flags);
}
-obj-$(CONFIG_EFI) += efi.o efi_$(BITS).o efi_stub_$(BITS).o
+obj-$(CONFIG_EFI) += quirks.o efi.o efi_$(BITS).o efi_stub_$(BITS).o
obj-$(CONFIG_ACPI_BGRT) += efi-bgrt.o
obj-$(CONFIG_EARLY_PRINTK_EFI) += early_printk.o
obj-$(CONFIG_EFI_MIXED) += efi_thunk_$(BITS).o
#define EFI_DEBUG
-#define EFI_MIN_RESERVE 5120
-
-#define EFI_DUMMY_GUID \
- EFI_GUID(0x4424ac57, 0xbe4b, 0x47dd, 0x9e, 0x97, 0xed, 0x50, 0xf0, 0x9f, 0x92, 0xa9)
-
-static efi_char16_t efi_dummy_name[6] = { 'D', 'U', 'M', 'M', 'Y', 0 };
-
struct efi_memory_map memmap;
static struct efi efi_phys __initdata;
}
early_param("add_efi_memmap", setup_add_efi_memmap);
-static bool efi_no_storage_paranoia;
-
-static int __init setup_storage_paranoia(char *arg)
-{
- efi_no_storage_paranoia = true;
- return 0;
-}
-early_param("efi_no_storage_paranoia", setup_storage_paranoia);
-
-static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
-{
- unsigned long flags;
- efi_status_t status;
-
- spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt(get_time, tm, tc);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return status;
-}
-
-static efi_status_t virt_efi_set_time(efi_time_t *tm)
-{
- unsigned long flags;
- efi_status_t status;
-
- spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt(set_time, tm);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return status;
-}
-
-static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
- efi_bool_t *pending,
- efi_time_t *tm)
-{
- unsigned long flags;
- efi_status_t status;
-
- spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt(get_wakeup_time, enabled, pending, tm);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return status;
-}
-
-static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
-{
- unsigned long flags;
- efi_status_t status;
-
- spin_lock_irqsave(&rtc_lock, flags);
- status = efi_call_virt(set_wakeup_time, enabled, tm);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return status;
-}
-
-static efi_status_t virt_efi_get_variable(efi_char16_t *name,
- efi_guid_t *vendor,
- u32 *attr,
- unsigned long *data_size,
- void *data)
-{
- return efi_call_virt(get_variable,
- name, vendor, attr,
- data_size, data);
-}
-
-static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
- efi_char16_t *name,
- efi_guid_t *vendor)
-{
- return efi_call_virt(get_next_variable,
- name_size, name, vendor);
-}
-
-static efi_status_t virt_efi_set_variable(efi_char16_t *name,
- efi_guid_t *vendor,
- u32 attr,
- unsigned long data_size,
- void *data)
-{
- return efi_call_virt(set_variable,
- name, vendor, attr,
- data_size, data);
-}
-
-static efi_status_t virt_efi_query_variable_info(u32 attr,
- u64 *storage_space,
- u64 *remaining_space,
- u64 *max_variable_size)
-{
- if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
- return EFI_UNSUPPORTED;
-
- return efi_call_virt(query_variable_info, attr, storage_space,
- remaining_space, max_variable_size);
-}
-
-static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
-{
- return efi_call_virt(get_next_high_mono_count, count);
-}
-
-static void virt_efi_reset_system(int reset_type,
- efi_status_t status,
- unsigned long data_size,
- efi_char16_t *data)
-{
- __efi_call_virt(reset_system, reset_type, status,
- data_size, data);
-}
-
-static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
- unsigned long count,
- unsigned long sg_list)
-{
- if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
- return EFI_UNSUPPORTED;
-
- return efi_call_virt(update_capsule, capsules, count, sg_list);
-}
-
-static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
- unsigned long count,
- u64 *max_size,
- int *reset_type)
-{
- if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
- return EFI_UNSUPPORTED;
-
- return efi_call_virt(query_capsule_caps, capsules, count, max_size,
- reset_type);
-}
-
static efi_status_t __init phys_efi_set_virtual_address_map(
unsigned long memory_map_size,
unsigned long descriptor_size,
return status;
}
-int efi_set_rtc_mmss(const struct timespec *now)
-{
- unsigned long nowtime = now->tv_sec;
- efi_status_t status;
- efi_time_t eft;
- efi_time_cap_t cap;
- struct rtc_time tm;
-
- status = efi.get_time(&eft, &cap);
- if (status != EFI_SUCCESS) {
- pr_err("Oops: efitime: can't read time!\n");
- return -1;
- }
-
- rtc_time_to_tm(nowtime, &tm);
- if (!rtc_valid_tm(&tm)) {
- eft.year = tm.tm_year + 1900;
- eft.month = tm.tm_mon + 1;
- eft.day = tm.tm_mday;
- eft.minute = tm.tm_min;
- eft.second = tm.tm_sec;
- eft.nanosecond = 0;
- } else {
- pr_err("%s: Invalid EFI RTC value: write of %lx to EFI RTC failed\n",
- __func__, nowtime);
- return -1;
- }
-
- status = efi.set_time(&eft);
- if (status != EFI_SUCCESS) {
- pr_err("Oops: efitime: can't write time!\n");
- return -1;
- }
- return 0;
-}
-
void efi_get_time(struct timespec *now)
{
efi_status_t status;
struct efi_info *e = &boot_params.efi_info;
unsigned long pmap;
+ if (efi_enabled(EFI_PARAVIRT))
+ return 0;
+
#ifdef CONFIG_X86_32
/* Can't handle data above 4GB at this time */
if (e->efi_memmap_hi) {
#endif /* EFI_DEBUG */
}
-void __init efi_reserve_boot_services(void)
-{
- void *p;
-
- for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
- efi_memory_desc_t *md = p;
- u64 start = md->phys_addr;
- u64 size = md->num_pages << EFI_PAGE_SHIFT;
-
- if (md->type != EFI_BOOT_SERVICES_CODE &&
- md->type != EFI_BOOT_SERVICES_DATA)
- continue;
- /* Only reserve where possible:
- * - Not within any already allocated areas
- * - Not over any memory area (really needed, if above?)
- * - Not within any part of the kernel
- * - Not the bios reserved area
- */
- if ((start + size > __pa_symbol(_text)
- && start <= __pa_symbol(_end)) ||
- !e820_all_mapped(start, start+size, E820_RAM) ||
- memblock_is_region_reserved(start, size)) {
- /* Could not reserve, skip it */
- md->num_pages = 0;
- memblock_dbg("Could not reserve boot range [0x%010llx-0x%010llx]\n",
- start, start+size-1);
- } else
- memblock_reserve(start, size);
- }
-}
-
void __init efi_unmap_memmap(void)
{
clear_bit(EFI_MEMMAP, &efi.flags);
if (memmap.map) {
- early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);
+ early_memunmap(memmap.map, memmap.nr_map * memmap.desc_size);
memmap.map = NULL;
}
}
-void __init efi_free_boot_services(void)
-{
- void *p;
-
- for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
- efi_memory_desc_t *md = p;
- unsigned long long start = md->phys_addr;
- unsigned long long size = md->num_pages << EFI_PAGE_SHIFT;
-
- if (md->type != EFI_BOOT_SERVICES_CODE &&
- md->type != EFI_BOOT_SERVICES_DATA)
- continue;
-
- /* Could not reserve boot area */
- if (!size)
- continue;
-
- free_bootmem_late(start, size);
- }
-
- efi_unmap_memmap();
-}
-
static int __init efi_systab_init(void *phys)
{
if (efi_enabled(EFI_64BIT)) {
if (!data)
return -ENOMEM;
}
- systab64 = early_ioremap((unsigned long)phys,
+ systab64 = early_memremap((unsigned long)phys,
sizeof(*systab64));
if (systab64 == NULL) {
pr_err("Couldn't map the system table!\n");
if (data)
- early_iounmap(data, sizeof(*data));
+ early_memunmap(data, sizeof(*data));
return -ENOMEM;
}
systab64->tables;
tmp |= data ? data->tables : systab64->tables;
- early_iounmap(systab64, sizeof(*systab64));
+ early_memunmap(systab64, sizeof(*systab64));
if (data)
- early_iounmap(data, sizeof(*data));
+ early_memunmap(data, sizeof(*data));
#ifdef CONFIG_X86_32
if (tmp >> 32) {
pr_err("EFI data located above 4GB, disabling EFI.\n");
} else {
efi_system_table_32_t *systab32;
- systab32 = early_ioremap((unsigned long)phys,
+ systab32 = early_memremap((unsigned long)phys,
sizeof(*systab32));
if (systab32 == NULL) {
pr_err("Couldn't map the system table!\n");
efi_systab.nr_tables = systab32->nr_tables;
efi_systab.tables = systab32->tables;
- early_iounmap(systab32, sizeof(*systab32));
+ early_memunmap(systab32, sizeof(*systab32));
}
efi.systab = &efi_systab;
{
efi_runtime_services_32_t *runtime;
- runtime = early_ioremap((unsigned long)efi.systab->runtime,
+ runtime = early_memremap((unsigned long)efi.systab->runtime,
sizeof(efi_runtime_services_32_t));
if (!runtime) {
pr_err("Could not map the runtime service table!\n");
efi_phys.set_virtual_address_map =
(efi_set_virtual_address_map_t *)
(unsigned long)runtime->set_virtual_address_map;
- early_iounmap(runtime, sizeof(efi_runtime_services_32_t));
+ early_memunmap(runtime, sizeof(efi_runtime_services_32_t));
return 0;
}
{
efi_runtime_services_64_t *runtime;
- runtime = early_ioremap((unsigned long)efi.systab->runtime,
+ runtime = early_memremap((unsigned long)efi.systab->runtime,
sizeof(efi_runtime_services_64_t));
if (!runtime) {
pr_err("Could not map the runtime service table!\n");
efi_phys.set_virtual_address_map =
(efi_set_virtual_address_map_t *)
(unsigned long)runtime->set_virtual_address_map;
- early_iounmap(runtime, sizeof(efi_runtime_services_64_t));
+ early_memunmap(runtime, sizeof(efi_runtime_services_64_t));
return 0;
}
* the runtime services table so that we can grab the physical
* address of several of the EFI runtime functions, needed to
* set the firmware into virtual mode.
+ *
+ * When EFI_PARAVIRT is in force then we could not map runtime
+ * service memory region because we do not have direct access to it.
+ * However, runtime services are available through proxy functions
+ * (e.g. in case of Xen dom0 EFI implementation they call special
+ * hypercall which executes relevant EFI functions) and that is why
+ * they are always enabled.
*/
- if (efi_enabled(EFI_64BIT))
- rv = efi_runtime_init64();
- else
- rv = efi_runtime_init32();
- if (rv)
- return rv;
+ if (!efi_enabled(EFI_PARAVIRT)) {
+ if (efi_enabled(EFI_64BIT))
+ rv = efi_runtime_init64();
+ else
+ rv = efi_runtime_init32();
+
+ if (rv)
+ return rv;
+ }
set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
static int __init efi_memmap_init(void)
{
+ if (efi_enabled(EFI_PARAVIRT))
+ return 0;
+
/* Map the EFI memory map */
- memmap.map = early_ioremap((unsigned long)memmap.phys_map,
+ memmap.map = early_memremap((unsigned long)memmap.phys_map,
memmap.nr_map * memmap.desc_size);
if (memmap.map == NULL) {
pr_err("Could not map the memory map!\n");
return 0;
}
-/*
- * A number of config table entries get remapped to virtual addresses
- * after entering EFI virtual mode. However, the kexec kernel requires
- * their physical addresses therefore we pass them via setup_data and
- * correct those entries to their respective physical addresses here.
- *
- * Currently only handles smbios which is necessary for some firmware
- * implementation.
- */
-static int __init efi_reuse_config(u64 tables, int nr_tables)
-{
- int i, sz, ret = 0;
- void *p, *tablep;
- struct efi_setup_data *data;
-
- if (!efi_setup)
- return 0;
-
- if (!efi_enabled(EFI_64BIT))
- return 0;
-
- data = early_memremap(efi_setup, sizeof(*data));
- if (!data) {
- ret = -ENOMEM;
- goto out;
- }
-
- if (!data->smbios)
- goto out_memremap;
-
- sz = sizeof(efi_config_table_64_t);
-
- p = tablep = early_memremap(tables, nr_tables * sz);
- if (!p) {
- pr_err("Could not map Configuration table!\n");
- ret = -ENOMEM;
- goto out_memremap;
- }
-
- for (i = 0; i < efi.systab->nr_tables; i++) {
- efi_guid_t guid;
-
- guid = ((efi_config_table_64_t *)p)->guid;
-
- if (!efi_guidcmp(guid, SMBIOS_TABLE_GUID))
- ((efi_config_table_64_t *)p)->table = data->smbios;
- p += sz;
- }
- early_iounmap(tablep, nr_tables * sz);
-
-out_memremap:
- early_iounmap(data, sizeof(*data));
-out:
- return ret;
-}
-
void __init efi_init(void)
{
efi_char16_t *c16;
if (efi_systab_init(efi_phys.systab))
return;
- set_bit(EFI_SYSTEM_TABLES, &efi.flags);
-
efi.config_table = (unsigned long)efi.systab->tables;
efi.fw_vendor = (unsigned long)efi.systab->fw_vendor;
efi.runtime = (unsigned long)efi.systab->runtime;
/*
* Show what we know for posterity
*/
- c16 = tmp = early_ioremap(efi.systab->fw_vendor, 2);
+ c16 = tmp = early_memremap(efi.systab->fw_vendor, 2);
if (c16) {
for (i = 0; i < sizeof(vendor) - 1 && *c16; ++i)
vendor[i] = *c16++;
vendor[i] = '\0';
} else
pr_err("Could not map the firmware vendor!\n");
- early_iounmap(tmp, 2);
+ early_memunmap(tmp, 2);
pr_info("EFI v%u.%.02u by %s\n",
efi.systab->hdr.revision >> 16,
if (efi_memmap_init())
return;
- set_bit(EFI_MEMMAP, &efi.flags);
-
print_efi_memmap();
}
(unsigned long long)md->phys_addr);
}
-static void native_runtime_setup(void)
-{
- efi.get_time = virt_efi_get_time;
- efi.set_time = virt_efi_set_time;
- efi.get_wakeup_time = virt_efi_get_wakeup_time;
- efi.set_wakeup_time = virt_efi_set_wakeup_time;
- efi.get_variable = virt_efi_get_variable;
- efi.get_next_variable = virt_efi_get_next_variable;
- efi.set_variable = virt_efi_set_variable;
- efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
- efi.reset_system = virt_efi_reset_system;
- efi.query_variable_info = virt_efi_query_variable_info;
- efi.update_capsule = virt_efi_update_capsule;
- efi.query_capsule_caps = virt_efi_query_capsule_caps;
-}
-
/* Merge contiguous regions of the same type and attribute */
static void __init efi_merge_regions(void)
{
*/
efi.runtime_version = efi_systab.hdr.revision;
- native_runtime_setup();
+ efi_native_runtime_setup();
efi.set_virtual_address_map = NULL;
runtime_code_page_mkexec();
/* clean DUMMY object */
- efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID,
- EFI_VARIABLE_NON_VOLATILE |
- EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS,
- 0, NULL);
+ efi_delete_dummy_variable();
#endif
}
efi.runtime_version = efi_systab.hdr.revision;
if (efi_is_native())
- native_runtime_setup();
+ efi_native_runtime_setup();
else
efi_thunk_runtime_setup();
free_pages((unsigned long)new_memmap, pg_shift);
/* clean DUMMY object */
- efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID,
- EFI_VARIABLE_NON_VOLATILE |
- EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS,
- 0, NULL);
+ efi_delete_dummy_variable();
}
void __init efi_enter_virtual_mode(void)
{
+ if (efi_enabled(EFI_PARAVIRT))
+ return;
+
if (efi_setup)
kexec_enter_virtual_mode();
else
efi_memory_desc_t *md;
void *p;
+ if (!efi_enabled(EFI_MEMMAP))
+ return 0;
+
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
md = p;
if ((md->phys_addr <= phys_addr) &&
return 0;
}
-/*
- * Some firmware implementations refuse to boot if there's insufficient space
- * in the variable store. Ensure that we never use more than a safe limit.
- *
- * Return EFI_SUCCESS if it is safe to write 'size' bytes to the variable
- * store.
- */
-efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
-{
- efi_status_t status;
- u64 storage_size, remaining_size, max_size;
-
- if (!(attributes & EFI_VARIABLE_NON_VOLATILE))
- return 0;
-
- status = efi.query_variable_info(attributes, &storage_size,
- &remaining_size, &max_size);
- if (status != EFI_SUCCESS)
- return status;
-
- /*
- * We account for that by refusing the write if permitting it would
- * reduce the available space to under 5KB. This figure was provided by
- * Samsung, so should be safe.
- */
- if ((remaining_size - size < EFI_MIN_RESERVE) &&
- !efi_no_storage_paranoia) {
-
- /*
- * Triggering garbage collection may require that the firmware
- * generate a real EFI_OUT_OF_RESOURCES error. We can force
- * that by attempting to use more space than is available.
- */
- unsigned long dummy_size = remaining_size + 1024;
- void *dummy = kzalloc(dummy_size, GFP_ATOMIC);
-
- if (!dummy)
- return EFI_OUT_OF_RESOURCES;
-
- status = efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID,
- EFI_VARIABLE_NON_VOLATILE |
- EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS,
- dummy_size, dummy);
-
- if (status == EFI_SUCCESS) {
- /*
- * This should have failed, so if it didn't make sure
- * that we delete it...
- */
- efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID,
- EFI_VARIABLE_NON_VOLATILE |
- EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS,
- 0, dummy);
- }
-
- kfree(dummy);
-
- /*
- * The runtime code may now have triggered a garbage collection
- * run, so check the variable info again
- */
- status = efi.query_variable_info(attributes, &storage_size,
- &remaining_size, &max_size);
-
- if (status != EFI_SUCCESS)
- return status;
-
- /*
- * There still isn't enough room, so return an error
- */
- if (remaining_size - size < EFI_MIN_RESERVE)
- return EFI_OUT_OF_RESOURCES;
- }
-
- return EFI_SUCCESS;
-}
-EXPORT_SYMBOL_GPL(efi_query_variable_store);
-
static int __init parse_efi_cmdline(char *str)
{
if (*str == '=')
return 0;
}
early_param("efi", parse_efi_cmdline);
-
-void __init efi_apply_memmap_quirks(void)
-{
- /*
- * Once setup is done earlier, unmap the EFI memory map on mismatched
- * firmware/kernel architectures since there is no support for runtime
- * services.
- */
- if (!efi_runtime_supported()) {
- pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n");
- efi_unmap_memmap();
- }
-
- /*
- * UV doesn't support the new EFI pagetable mapping yet.
- */
- if (is_uv_system())
- set_bit(EFI_OLD_MEMMAP, &efi.flags);
-}
--- /dev/null
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/time.h>
+#include <linux/types.h>
+#include <linux/efi.h>
+#include <linux/slab.h>
+#include <linux/memblock.h>
+#include <linux/bootmem.h>
+#include <linux/acpi.h>
+#include <asm/efi.h>
+#include <asm/uv/uv.h>
+
+#define EFI_MIN_RESERVE 5120
+
+#define EFI_DUMMY_GUID \
+ EFI_GUID(0x4424ac57, 0xbe4b, 0x47dd, 0x9e, 0x97, 0xed, 0x50, 0xf0, 0x9f, 0x92, 0xa9)
+
+static efi_char16_t efi_dummy_name[6] = { 'D', 'U', 'M', 'M', 'Y', 0 };
+
+static bool efi_no_storage_paranoia;
+
+/*
+ * Some firmware implementations refuse to boot if there's insufficient
+ * space in the variable store. The implementation of garbage collection
+ * in some FW versions causes stale (deleted) variables to take up space
+ * longer than intended and space is only freed once the store becomes
+ * almost completely full.
+ *
+ * Enabling this option disables the space checks in
+ * efi_query_variable_store() and forces garbage collection.
+ *
+ * Only enable this option if deleting EFI variables does not free up
+ * space in your variable store, e.g. if despite deleting variables
+ * you're unable to create new ones.
+ */
+static int __init setup_storage_paranoia(char *arg)
+{
+ efi_no_storage_paranoia = true;
+ return 0;
+}
+early_param("efi_no_storage_paranoia", setup_storage_paranoia);
+
+/*
+ * Deleting the dummy variable which kicks off garbage collection
+*/
+void efi_delete_dummy_variable(void)
+{
+ efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ 0, NULL);
+}
+
+/*
+ * Some firmware implementations refuse to boot if there's insufficient space
+ * in the variable store. Ensure that we never use more than a safe limit.
+ *
+ * Return EFI_SUCCESS if it is safe to write 'size' bytes to the variable
+ * store.
+ */
+efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
+{
+ efi_status_t status;
+ u64 storage_size, remaining_size, max_size;
+
+ if (!(attributes & EFI_VARIABLE_NON_VOLATILE))
+ return 0;
+
+ status = efi.query_variable_info(attributes, &storage_size,
+ &remaining_size, &max_size);
+ if (status != EFI_SUCCESS)
+ return status;
+
+ /*
+ * We account for that by refusing the write if permitting it would
+ * reduce the available space to under 5KB. This figure was provided by
+ * Samsung, so should be safe.
+ */
+ if ((remaining_size - size < EFI_MIN_RESERVE) &&
+ !efi_no_storage_paranoia) {
+
+ /*
+ * Triggering garbage collection may require that the firmware
+ * generate a real EFI_OUT_OF_RESOURCES error. We can force
+ * that by attempting to use more space than is available.
+ */
+ unsigned long dummy_size = remaining_size + 1024;
+ void *dummy = kzalloc(dummy_size, GFP_ATOMIC);
+
+ if (!dummy)
+ return EFI_OUT_OF_RESOURCES;
+
+ status = efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID,
+ EFI_VARIABLE_NON_VOLATILE |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS |
+ EFI_VARIABLE_RUNTIME_ACCESS,
+ dummy_size, dummy);
+
+ if (status == EFI_SUCCESS) {
+ /*
+ * This should have failed, so if it didn't make sure
+ * that we delete it...
+ */
+ efi_delete_dummy_variable();
+ }
+
+ kfree(dummy);
+
+ /*
+ * The runtime code may now have triggered a garbage collection
+ * run, so check the variable info again
+ */
+ status = efi.query_variable_info(attributes, &storage_size,
+ &remaining_size, &max_size);
+
+ if (status != EFI_SUCCESS)
+ return status;
+
+ /*
+ * There still isn't enough room, so return an error
+ */
+ if (remaining_size - size < EFI_MIN_RESERVE)
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ return EFI_SUCCESS;
+}
+EXPORT_SYMBOL_GPL(efi_query_variable_store);
+
+/*
+ * The UEFI specification makes it clear that the operating system is free to do
+ * whatever it wants with boot services code after ExitBootServices() has been
+ * called. Ignoring this recommendation a significant bunch of EFI implementations
+ * continue calling into boot services code (SetVirtualAddressMap). In order to
+ * work around such buggy implementations we reserve boot services region during
+ * EFI init and make sure it stays executable. Then, after SetVirtualAddressMap(), it
+* is discarded.
+*/
+void __init efi_reserve_boot_services(void)
+{
+ void *p;
+
+ for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
+ efi_memory_desc_t *md = p;
+ u64 start = md->phys_addr;
+ u64 size = md->num_pages << EFI_PAGE_SHIFT;
+
+ if (md->type != EFI_BOOT_SERVICES_CODE &&
+ md->type != EFI_BOOT_SERVICES_DATA)
+ continue;
+ /* Only reserve where possible:
+ * - Not within any already allocated areas
+ * - Not over any memory area (really needed, if above?)
+ * - Not within any part of the kernel
+ * - Not the bios reserved area
+ */
+ if ((start + size > __pa_symbol(_text)
+ && start <= __pa_symbol(_end)) ||
+ !e820_all_mapped(start, start+size, E820_RAM) ||
+ memblock_is_region_reserved(start, size)) {
+ /* Could not reserve, skip it */
+ md->num_pages = 0;
+ memblock_dbg("Could not reserve boot range [0x%010llx-0x%010llx]\n",
+ start, start+size-1);
+ } else
+ memblock_reserve(start, size);
+ }
+}
+
+void __init efi_free_boot_services(void)
+{
+ void *p;
+
+ for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
+ efi_memory_desc_t *md = p;
+ unsigned long long start = md->phys_addr;
+ unsigned long long size = md->num_pages << EFI_PAGE_SHIFT;
+
+ if (md->type != EFI_BOOT_SERVICES_CODE &&
+ md->type != EFI_BOOT_SERVICES_DATA)
+ continue;
+
+ /* Could not reserve boot area */
+ if (!size)
+ continue;
+
+ free_bootmem_late(start, size);
+ }
+
+ efi_unmap_memmap();
+}
+
+/*
+ * A number of config table entries get remapped to virtual addresses
+ * after entering EFI virtual mode. However, the kexec kernel requires
+ * their physical addresses therefore we pass them via setup_data and
+ * correct those entries to their respective physical addresses here.
+ *
+ * Currently only handles smbios which is necessary for some firmware
+ * implementation.
+ */
+int __init efi_reuse_config(u64 tables, int nr_tables)
+{
+ int i, sz, ret = 0;
+ void *p, *tablep;
+ struct efi_setup_data *data;
+
+ if (!efi_setup)
+ return 0;
+
+ if (!efi_enabled(EFI_64BIT))
+ return 0;
+
+ data = early_memremap(efi_setup, sizeof(*data));
+ if (!data) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (!data->smbios)
+ goto out_memremap;
+
+ sz = sizeof(efi_config_table_64_t);
+
+ p = tablep = early_memremap(tables, nr_tables * sz);
+ if (!p) {
+ pr_err("Could not map Configuration table!\n");
+ ret = -ENOMEM;
+ goto out_memremap;
+ }
+
+ for (i = 0; i < efi.systab->nr_tables; i++) {
+ efi_guid_t guid;
+
+ guid = ((efi_config_table_64_t *)p)->guid;
+
+ if (!efi_guidcmp(guid, SMBIOS_TABLE_GUID))
+ ((efi_config_table_64_t *)p)->table = data->smbios;
+ p += sz;
+ }
+ early_memunmap(tablep, nr_tables * sz);
+
+out_memremap:
+ early_memunmap(data, sizeof(*data));
+out:
+ return ret;
+}
+
+void __init efi_apply_memmap_quirks(void)
+{
+ /*
+ * Once setup is done earlier, unmap the EFI memory map on mismatched
+ * firmware/kernel architectures since there is no support for runtime
+ * services.
+ */
+ if (!efi_runtime_supported()) {
+ pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n");
+ efi_unmap_memmap();
+ }
+
+ /*
+ * UV doesn't support the new EFI pagetable mapping yet.
+ */
+ if (is_uv_system())
+ set_bit(EFI_OLD_MEMMAP, &efi.flags);
+}
+
+/*
+ * For most modern platforms the preferred method of powering off is via
+ * ACPI. However, there are some that are known to require the use of
+ * EFI runtime services and for which ACPI does not work at all.
+ *
+ * Using EFI is a last resort, to be used only if no other option
+ * exists.
+ */
+bool efi_reboot_required(void)
+{
+ if (!acpi_gbl_reduced_hardware)
+ return false;
+
+ efi_reboot_quirk_mode = EFI_RESET_WARM;
+ return true;
+}
+
+bool efi_poweroff_required(void)
+{
+ return !!acpi_gbl_reduced_hardware;
+}
obj-$(CONFIG_XEN_DEBUG_FS) += debugfs.o
obj-$(CONFIG_XEN_DOM0) += apic.o vga.o
obj-$(CONFIG_SWIOTLB_XEN) += pci-swiotlb-xen.o
+obj-$(CONFIG_XEN_EFI) += efi.o
--- /dev/null
+/*
+ * Copyright (c) 2014 Oracle Co., Daniel Kiper
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/efi.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <xen/xen-ops.h>
+
+#include <asm/setup.h>
+
+void __init xen_efi_init(void)
+{
+ efi_system_table_t *efi_systab_xen;
+
+ efi_systab_xen = xen_efi_probe();
+
+ if (efi_systab_xen == NULL)
+ return;
+
+ strncpy((char *)&boot_params.efi_info.efi_loader_signature, "Xen",
+ sizeof(boot_params.efi_info.efi_loader_signature));
+ boot_params.efi_info.efi_systab = (__u32)__pa(efi_systab_xen);
+ boot_params.efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32);
+
+ set_bit(EFI_BOOT, &efi.flags);
+ set_bit(EFI_PARAVIRT, &efi.flags);
+ set_bit(EFI_64BIT, &efi.flags);
+}
xen_setup_runstate_info(0);
+ xen_efi_init();
+
/* Start the world */
#ifdef CONFIG_X86_32
i386_start_kernel();
}
#endif
+#ifdef CONFIG_XEN_EFI
+extern void xen_efi_init(void);
+#else
+static inline void __init xen_efi_init(void)
+{
+}
+#endif
+
/* Declare an asm function, along with symbols needed to make it
inlineable */
#define DECL_ASM(ret, name, ...) \
the EFI runtime support gets system table address, memory
map address, and other parameters from the device tree.
+config EFI_RUNTIME_WRAPPERS
+ bool
+
+config EFI_ARMSTUB
+ bool
+
endmenu
config UEFI_CPER
#
# Makefile for linux kernel
#
-obj-$(CONFIG_EFI) += efi.o vars.o
+obj-$(CONFIG_EFI) += efi.o vars.o reboot.o
obj-$(CONFIG_EFI_VARS) += efivars.o
obj-$(CONFIG_EFI_VARS_PSTORE) += efi-pstore.o
obj-$(CONFIG_UEFI_CPER) += cper.o
obj-$(CONFIG_EFI_RUNTIME_MAP) += runtime-map.o
+obj-$(CONFIG_EFI_RUNTIME_WRAPPERS) += runtime-wrappers.o
+obj-$(CONFIG_EFI_STUB) += libstub/
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/io.h>
+#include <linux/platform_device.h>
struct efi __read_mostly efi = {
.mps = EFI_INVALID_TABLE_ADDR,
static umode_t efi_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
- umode_t mode = attr->mode;
-
- if (attr == &efi_attr_fw_vendor.attr)
- return (efi.fw_vendor == EFI_INVALID_TABLE_ADDR) ? 0 : mode;
- else if (attr == &efi_attr_runtime.attr)
- return (efi.runtime == EFI_INVALID_TABLE_ADDR) ? 0 : mode;
- else if (attr == &efi_attr_config_table.attr)
- return (efi.config_table == EFI_INVALID_TABLE_ADDR) ? 0 : mode;
+ if (attr == &efi_attr_fw_vendor.attr) {
+ if (efi_enabled(EFI_PARAVIRT) ||
+ efi.fw_vendor == EFI_INVALID_TABLE_ADDR)
+ return 0;
+ } else if (attr == &efi_attr_runtime.attr) {
+ if (efi.runtime == EFI_INVALID_TABLE_ADDR)
+ return 0;
+ } else if (attr == &efi_attr_config_table.attr) {
+ if (efi.config_table == EFI_INVALID_TABLE_ADDR)
+ return 0;
+ }
- return mode;
+ return attr->mode;
}
static struct attribute_group efi_subsys_attr_group = {
if (table64 >> 32) {
pr_cont("\n");
pr_err("Table located above 4GB, disabling EFI.\n");
- early_iounmap(config_tables,
+ early_memunmap(config_tables,
efi.systab->nr_tables * sz);
return -EINVAL;
}
tablep += sz;
}
pr_cont("\n");
- early_iounmap(config_tables, efi.systab->nr_tables * sz);
+ early_memunmap(config_tables, efi.systab->nr_tables * sz);
set_bit(EFI_CONFIG_TABLES, &efi.flags);
return 0;
}
+#ifdef CONFIG_EFI_VARS_MODULE
+static int __init efi_load_efivars(void)
+{
+ struct platform_device *pdev;
+
+ if (!efi_enabled(EFI_RUNTIME_SERVICES))
+ return 0;
+
+ pdev = platform_device_register_simple("efivars", 0, NULL, 0);
+ return IS_ERR(pdev) ? PTR_ERR(pdev) : 0;
+}
+device_initcall(efi_load_efivars);
+#endif
+
#ifdef CONFIG_EFI_PARAMS_FROM_FDT
#define UEFI_PARAM(name, prop, field) \
MODULE_DESCRIPTION("sysfs interface to EFI Variables");
MODULE_LICENSE("GPL");
MODULE_VERSION(EFIVARS_VERSION);
+MODULE_ALIAS("platform:efivars");
LIST_HEAD(efivar_sysfs_list);
EXPORT_SYMBOL_GPL(efivar_sysfs_list);
--- /dev/null
+#
+# The stub may be linked into the kernel proper or into a separate boot binary,
+# but in either case, it executes before the kernel does (with MMU disabled) so
+# things like ftrace and stack-protector are likely to cause trouble if left
+# enabled, even if doing so doesn't break the build.
+#
+cflags-$(CONFIG_X86_32) := -march=i386
+cflags-$(CONFIG_X86_64) := -mcmodel=small
+cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 \
+ -fPIC -fno-strict-aliasing -mno-red-zone \
+ -mno-mmx -mno-sse -DDISABLE_BRANCH_PROFILING
+
+cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS))
+cflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \
+ -fno-builtin -fpic -mno-single-pic-base
+
+KBUILD_CFLAGS := $(cflags-y) \
+ $(call cc-option,-ffreestanding) \
+ $(call cc-option,-fno-stack-protector)
+
+GCOV_PROFILE := n
+
+lib-y := efi-stub-helper.o
+lib-$(CONFIG_EFI_ARMSTUB) += arm-stub.o fdt.o
+
+CFLAGS_fdt.o += -I$(srctree)/scripts/dtc/libfdt/
*
*/
+#include <linux/efi.h>
+#include <asm/efi.h>
+
+#include "efistub.h"
+
static int __init efi_secureboot_enabled(efi_system_table_t *sys_table_arg)
{
static efi_guid_t const var_guid __initconst = EFI_GLOBAL_VARIABLE_GUID;
}
}
-static efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg,
- void *__image, void **__fh)
+efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg,
+ void *__image, void **__fh)
{
efi_file_io_interface_t *io;
efi_loaded_image_t *image = __image;
*__fh = fh;
return status;
}
-static efi_status_t efi_file_close(void *handle)
+
+efi_status_t efi_file_close(void *handle)
{
efi_file_handle_t *fh = handle;
return fh->close(handle);
}
-static efi_status_t
+efi_status_t
efi_file_read(void *handle, unsigned long *size, void *addr)
{
efi_file_handle_t *fh = handle;
}
-static efi_status_t
+efi_status_t
efi_file_size(efi_system_table_t *sys_table_arg, void *__fh,
efi_char16_t *filename_16, void **handle, u64 *file_sz)
{
-static void efi_char16_printk(efi_system_table_t *sys_table_arg,
+void efi_char16_printk(efi_system_table_t *sys_table_arg,
efi_char16_t *str)
{
struct efi_simple_text_output_protocol *out;
* must be reserved. On failure it is required to free all
* all allocations it has made.
*/
-static efi_status_t handle_kernel_image(efi_system_table_t *sys_table,
- unsigned long *image_addr,
- unsigned long *image_size,
- unsigned long *reserve_addr,
- unsigned long *reserve_size,
- unsigned long dram_base,
- efi_loaded_image_t *image);
+efi_status_t handle_kernel_image(efi_system_table_t *sys_table,
+ unsigned long *image_addr,
+ unsigned long *image_size,
+ unsigned long *reserve_addr,
+ unsigned long *reserve_size,
+ unsigned long dram_base,
+ efi_loaded_image_t *image);
/*
* EFI entry point for the arm/arm64 EFI stubs. This is the entrypoint
* that is described in the PE/COFF header. Most of the code is the same
* under the terms of the GNU General Public License version 2.
*
*/
-#define EFI_READ_CHUNK_SIZE (1024 * 1024)
-/* error code which can't be mistaken for valid address */
-#define EFI_ERROR (~0UL)
+#include <linux/efi.h>
+#include <asm/efi.h>
+
+#include "efistub.h"
+#define EFI_READ_CHUNK_SIZE (1024 * 1024)
struct file_info {
efi_file_handle_t *handle;
u64 size;
};
-static void efi_printk(efi_system_table_t *sys_table_arg, char *str)
+void efi_printk(efi_system_table_t *sys_table_arg, char *str)
{
char *s8;
}
}
-#define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
-#define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
-
-
-static efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
- efi_memory_desc_t **map,
- unsigned long *map_size,
- unsigned long *desc_size,
- u32 *desc_ver,
- unsigned long *key_ptr)
+efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
+ efi_memory_desc_t **map,
+ unsigned long *map_size,
+ unsigned long *desc_size,
+ u32 *desc_ver,
+ unsigned long *key_ptr)
{
efi_memory_desc_t *m = NULL;
efi_status_t status;
}
-static unsigned long __init get_dram_base(efi_system_table_t *sys_table_arg)
+unsigned long __init get_dram_base(efi_system_table_t *sys_table_arg)
{
efi_status_t status;
unsigned long map_size;
/*
* Allocate at the highest possible address that is not above 'max'.
*/
-static efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
- unsigned long size, unsigned long align,
- unsigned long *addr, unsigned long max)
+efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
+ unsigned long size, unsigned long align,
+ unsigned long *addr, unsigned long max)
{
unsigned long map_size, desc_size;
efi_memory_desc_t *map;
/*
* Allocate at the lowest possible address.
*/
-static efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
- unsigned long size, unsigned long align,
- unsigned long *addr)
+efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
+ unsigned long size, unsigned long align,
+ unsigned long *addr)
{
unsigned long map_size, desc_size;
efi_memory_desc_t *map;
return status;
}
-static void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
- unsigned long addr)
+void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
+ unsigned long addr)
{
unsigned long nr_pages;
* We only support loading a file from the same filesystem as
* the kernel image.
*/
-static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
- efi_loaded_image_t *image,
- char *cmd_line, char *option_string,
- unsigned long max_addr,
- unsigned long *load_addr,
- unsigned long *load_size)
+efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
+ efi_loaded_image_t *image,
+ char *cmd_line, char *option_string,
+ unsigned long max_addr,
+ unsigned long *load_addr,
+ unsigned long *load_size)
{
struct file_info *files;
unsigned long file_addr;
* address is not available the lowest available address will
* be used.
*/
-static efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
- unsigned long *image_addr,
- unsigned long image_size,
- unsigned long alloc_size,
- unsigned long preferred_addr,
- unsigned long alignment)
+efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
+ unsigned long *image_addr,
+ unsigned long image_size,
+ unsigned long alloc_size,
+ unsigned long preferred_addr,
+ unsigned long alignment)
{
unsigned long cur_image_addr;
unsigned long new_addr = 0;
* Size of memory allocated return in *cmd_line_len.
* Returns NULL on error.
*/
-static char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
- efi_loaded_image_t *image,
- int *cmd_line_len)
+char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
+ efi_loaded_image_t *image,
+ int *cmd_line_len)
{
const u16 *s2;
u8 *s1 = NULL;
--- /dev/null
+
+#ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H
+#define _DRIVERS_FIRMWARE_EFI_EFISTUB_H
+
+/* error code which can't be mistaken for valid address */
+#define EFI_ERROR (~0UL)
+
+void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
+
+efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image,
+ void **__fh);
+
+efi_status_t efi_file_size(efi_system_table_t *sys_table_arg, void *__fh,
+ efi_char16_t *filename_16, void **handle,
+ u64 *file_sz);
+
+efi_status_t efi_file_read(void *handle, unsigned long *size, void *addr);
+
+efi_status_t efi_file_close(void *handle);
+
+unsigned long get_dram_base(efi_system_table_t *sys_table_arg);
+
+efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
+ unsigned long orig_fdt_size,
+ void *fdt, int new_fdt_size, char *cmdline_ptr,
+ u64 initrd_addr, u64 initrd_size,
+ efi_memory_desc_t *memory_map,
+ unsigned long map_size, unsigned long desc_size,
+ u32 desc_ver);
+
+efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table,
+ void *handle,
+ unsigned long *new_fdt_addr,
+ unsigned long max_addr,
+ u64 initrd_addr, u64 initrd_size,
+ char *cmdline_ptr,
+ unsigned long fdt_addr,
+ unsigned long fdt_size);
+
+void *get_fdt(efi_system_table_t *sys_table);
+
+#endif
*
*/
-static efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
- unsigned long orig_fdt_size,
- void *fdt, int new_fdt_size, char *cmdline_ptr,
- u64 initrd_addr, u64 initrd_size,
- efi_memory_desc_t *memory_map,
- unsigned long map_size, unsigned long desc_size,
- u32 desc_ver)
+#include <linux/efi.h>
+#include <linux/libfdt.h>
+#include <asm/efi.h>
+
+efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
+ unsigned long orig_fdt_size,
+ void *fdt, int new_fdt_size, char *cmdline_ptr,
+ u64 initrd_addr, u64 initrd_size,
+ efi_memory_desc_t *memory_map,
+ unsigned long map_size, unsigned long desc_size,
+ u32 desc_ver)
{
int node, prev;
int status;
return EFI_LOAD_ERROR;
}
-static void *get_fdt(efi_system_table_t *sys_table)
+void *get_fdt(efi_system_table_t *sys_table)
{
efi_guid_t fdt_guid = DEVICE_TREE_GUID;
efi_config_table_t *tables;
--- /dev/null
+/*
+ * Copyright (C) 2014 Intel Corporation; author Matt Fleming
+ * Copyright (c) 2014 Red Hat, Inc., Mark Salter <msalter@redhat.com>
+ */
+#include <linux/efi.h>
+#include <linux/reboot.h>
+
+int efi_reboot_quirk_mode = -1;
+
+void efi_reboot(enum reboot_mode reboot_mode, const char *__unused)
+{
+ int efi_mode;
+
+ if (!efi_enabled(EFI_RUNTIME_SERVICES))
+ return;
+
+ switch (reboot_mode) {
+ case REBOOT_WARM:
+ case REBOOT_SOFT:
+ efi_mode = EFI_RESET_WARM;
+ break;
+ default:
+ efi_mode = EFI_RESET_COLD;
+ break;
+ }
+
+ /*
+ * If a quirk forced an EFI reset mode, always use that.
+ */
+ if (efi_reboot_quirk_mode != -1)
+ efi_mode = efi_reboot_quirk_mode;
+
+ efi.reset_system(efi_mode, EFI_SUCCESS, 0, NULL);
+}
+
+bool __weak efi_poweroff_required(void)
+{
+ return false;
+}
+
+static void efi_power_off(void)
+{
+ efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL);
+}
+
+static int __init efi_shutdown_init(void)
+{
+ if (!efi_enabled(EFI_RUNTIME_SERVICES))
+ return -ENODEV;
+
+ if (efi_poweroff_required())
+ pm_power_off = efi_power_off;
+
+ return 0;
+}
+late_initcall(efi_shutdown_init);
--- /dev/null
+/*
+ * runtime-wrappers.c - Runtime Services function call wrappers
+ *
+ * Copyright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
+ *
+ * Split off from arch/x86/platform/efi/efi.c
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 1999-2002 Hewlett-Packard Co.
+ * Copyright (C) 2005-2008 Intel Co.
+ * Copyright (C) 2013 SuSE Labs
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/efi.h>
+#include <linux/spinlock.h> /* spinlock_t */
+#include <asm/efi.h>
+
+/*
+ * As per commit ef68c8f87ed1 ("x86: Serialize EFI time accesses on rtc_lock"),
+ * the EFI specification requires that callers of the time related runtime
+ * functions serialize with other CMOS accesses in the kernel, as the EFI time
+ * functions may choose to also use the legacy CMOS RTC.
+ */
+__weak DEFINE_SPINLOCK(rtc_lock);
+
+static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
+{
+ unsigned long flags;
+ efi_status_t status;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ status = efi_call_virt(get_time, tm, tc);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return status;
+}
+
+static efi_status_t virt_efi_set_time(efi_time_t *tm)
+{
+ unsigned long flags;
+ efi_status_t status;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ status = efi_call_virt(set_time, tm);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return status;
+}
+
+static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
+ efi_bool_t *pending,
+ efi_time_t *tm)
+{
+ unsigned long flags;
+ efi_status_t status;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ status = efi_call_virt(get_wakeup_time, enabled, pending, tm);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return status;
+}
+
+static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
+{
+ unsigned long flags;
+ efi_status_t status;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ status = efi_call_virt(set_wakeup_time, enabled, tm);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return status;
+}
+
+static efi_status_t virt_efi_get_variable(efi_char16_t *name,
+ efi_guid_t *vendor,
+ u32 *attr,
+ unsigned long *data_size,
+ void *data)
+{
+ return efi_call_virt(get_variable, name, vendor, attr, data_size, data);
+}
+
+static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
+ efi_char16_t *name,
+ efi_guid_t *vendor)
+{
+ return efi_call_virt(get_next_variable, name_size, name, vendor);
+}
+
+static efi_status_t virt_efi_set_variable(efi_char16_t *name,
+ efi_guid_t *vendor,
+ u32 attr,
+ unsigned long data_size,
+ void *data)
+{
+ return efi_call_virt(set_variable, name, vendor, attr, data_size, data);
+}
+
+static efi_status_t virt_efi_query_variable_info(u32 attr,
+ u64 *storage_space,
+ u64 *remaining_space,
+ u64 *max_variable_size)
+{
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ return efi_call_virt(query_variable_info, attr, storage_space,
+ remaining_space, max_variable_size);
+}
+
+static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
+{
+ return efi_call_virt(get_next_high_mono_count, count);
+}
+
+static void virt_efi_reset_system(int reset_type,
+ efi_status_t status,
+ unsigned long data_size,
+ efi_char16_t *data)
+{
+ __efi_call_virt(reset_system, reset_type, status, data_size, data);
+}
+
+static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
+ unsigned long count,
+ unsigned long sg_list)
+{
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ return efi_call_virt(update_capsule, capsules, count, sg_list);
+}
+
+static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
+ unsigned long count,
+ u64 *max_size,
+ int *reset_type)
+{
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ return efi_call_virt(query_capsule_caps, capsules, count, max_size,
+ reset_type);
+}
+
+void efi_native_runtime_setup(void)
+{
+ efi.get_time = virt_efi_get_time;
+ efi.set_time = virt_efi_set_time;
+ efi.get_wakeup_time = virt_efi_get_wakeup_time;
+ efi.set_wakeup_time = virt_efi_set_wakeup_time;
+ efi.get_variable = virt_efi_get_variable;
+ efi.get_next_variable = virt_efi_get_next_variable;
+ efi.set_variable = virt_efi_set_variable;
+ efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
+ efi.reset_system = virt_efi_reset_system;
+ efi.query_variable_info = virt_efi_query_variable_info;
+ efi.update_capsule = virt_efi_update_capsule;
+ efi.query_capsule_caps = virt_efi_query_capsule_caps;
+}
config XEN_HAVE_PVMMU
bool
+config XEN_EFI
+ def_bool y
+ depends on X86_64 && EFI
+
endmenu
nostackp := $(call cc-option, -fno-stack-protector)
CFLAGS_features.o := $(nostackp)
+CFLAGS_efi.o += -fshort-wchar
+
dom0-$(CONFIG_PCI) += pci.o
dom0-$(CONFIG_USB_SUPPORT) += dbgp.o
dom0-$(CONFIG_ACPI) += acpi.o $(xen-pad-y)
obj-$(CONFIG_XEN_ACPI_HOTPLUG_MEMORY) += xen-acpi-memhotplug.o
obj-$(CONFIG_XEN_ACPI_HOTPLUG_CPU) += xen-acpi-cpuhotplug.o
obj-$(CONFIG_XEN_ACPI_PROCESSOR) += xen-acpi-processor.o
+obj-$(CONFIG_XEN_EFI) += efi.o
xen-evtchn-y := evtchn.o
xen-gntdev-y := gntdev.o
xen-gntalloc-y := gntalloc.o
--- /dev/null
+/*
+ * EFI support for Xen.
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 1999-2002 Hewlett-Packard Co.
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Stephane Eranian <eranian@hpl.hp.com>
+ * Copyright (C) 2005-2008 Intel Co.
+ * Fenghua Yu <fenghua.yu@intel.com>
+ * Bibo Mao <bibo.mao@intel.com>
+ * Chandramouli Narayanan <mouli@linux.intel.com>
+ * Huang Ying <ying.huang@intel.com>
+ * Copyright (C) 2011 Novell Co.
+ * Jan Beulich <JBeulich@suse.com>
+ * Copyright (C) 2011-2012 Oracle Co.
+ * Liang Tang <liang.tang@oracle.com>
+ * Copyright (c) 2014 Oracle Co., Daniel Kiper
+ */
+
+#include <linux/bug.h>
+#include <linux/efi.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <xen/interface/xen.h>
+#include <xen/interface/platform.h>
+#include <xen/xen.h>
+
+#include <asm/xen/hypercall.h>
+
+#define INIT_EFI_OP(name) \
+ {.cmd = XENPF_efi_runtime_call, \
+ .u.efi_runtime_call.function = XEN_EFI_##name, \
+ .u.efi_runtime_call.misc = 0}
+
+#define efi_data(op) (op.u.efi_runtime_call)
+
+static efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
+{
+ struct xen_platform_op op = INIT_EFI_OP(get_time);
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ if (tm) {
+ BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_time.time));
+ memcpy(tm, &efi_data(op).u.get_time.time, sizeof(*tm));
+ }
+
+ if (tc) {
+ tc->resolution = efi_data(op).u.get_time.resolution;
+ tc->accuracy = efi_data(op).u.get_time.accuracy;
+ tc->sets_to_zero = !!(efi_data(op).misc &
+ XEN_EFI_GET_TIME_SET_CLEARS_NS);
+ }
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_set_time(efi_time_t *tm)
+{
+ struct xen_platform_op op = INIT_EFI_OP(set_time);
+
+ BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_time));
+ memcpy(&efi_data(op).u.set_time, tm, sizeof(*tm));
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled,
+ efi_bool_t *pending,
+ efi_time_t *tm)
+{
+ struct xen_platform_op op = INIT_EFI_OP(get_wakeup_time);
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ if (tm) {
+ BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_wakeup_time));
+ memcpy(tm, &efi_data(op).u.get_wakeup_time, sizeof(*tm));
+ }
+
+ if (enabled)
+ *enabled = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_ENABLED);
+
+ if (pending)
+ *pending = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_PENDING);
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
+{
+ struct xen_platform_op op = INIT_EFI_OP(set_wakeup_time);
+
+ BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_wakeup_time));
+ if (enabled)
+ efi_data(op).misc = XEN_EFI_SET_WAKEUP_TIME_ENABLE;
+ if (tm)
+ memcpy(&efi_data(op).u.set_wakeup_time, tm, sizeof(*tm));
+ else
+ efi_data(op).misc |= XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY;
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_get_variable(efi_char16_t *name,
+ efi_guid_t *vendor,
+ u32 *attr,
+ unsigned long *data_size,
+ void *data)
+{
+ struct xen_platform_op op = INIT_EFI_OP(get_variable);
+
+ set_xen_guest_handle(efi_data(op).u.get_variable.name, name);
+ BUILD_BUG_ON(sizeof(*vendor) !=
+ sizeof(efi_data(op).u.get_variable.vendor_guid));
+ memcpy(&efi_data(op).u.get_variable.vendor_guid, vendor, sizeof(*vendor));
+ efi_data(op).u.get_variable.size = *data_size;
+ set_xen_guest_handle(efi_data(op).u.get_variable.data, data);
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ *data_size = efi_data(op).u.get_variable.size;
+ if (attr)
+ *attr = efi_data(op).misc;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
+ efi_char16_t *name,
+ efi_guid_t *vendor)
+{
+ struct xen_platform_op op = INIT_EFI_OP(get_next_variable_name);
+
+ efi_data(op).u.get_next_variable_name.size = *name_size;
+ set_xen_guest_handle(efi_data(op).u.get_next_variable_name.name, name);
+ BUILD_BUG_ON(sizeof(*vendor) !=
+ sizeof(efi_data(op).u.get_next_variable_name.vendor_guid));
+ memcpy(&efi_data(op).u.get_next_variable_name.vendor_guid, vendor,
+ sizeof(*vendor));
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ *name_size = efi_data(op).u.get_next_variable_name.size;
+ memcpy(vendor, &efi_data(op).u.get_next_variable_name.vendor_guid,
+ sizeof(*vendor));
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_set_variable(efi_char16_t *name,
+ efi_guid_t *vendor,
+ u32 attr,
+ unsigned long data_size,
+ void *data)
+{
+ struct xen_platform_op op = INIT_EFI_OP(set_variable);
+
+ set_xen_guest_handle(efi_data(op).u.set_variable.name, name);
+ efi_data(op).misc = attr;
+ BUILD_BUG_ON(sizeof(*vendor) !=
+ sizeof(efi_data(op).u.set_variable.vendor_guid));
+ memcpy(&efi_data(op).u.set_variable.vendor_guid, vendor, sizeof(*vendor));
+ efi_data(op).u.set_variable.size = data_size;
+ set_xen_guest_handle(efi_data(op).u.set_variable.data, data);
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_query_variable_info(u32 attr,
+ u64 *storage_space,
+ u64 *remaining_space,
+ u64 *max_variable_size)
+{
+ struct xen_platform_op op = INIT_EFI_OP(query_variable_info);
+
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ efi_data(op).u.query_variable_info.attr = attr;
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ *storage_space = efi_data(op).u.query_variable_info.max_store_size;
+ *remaining_space = efi_data(op).u.query_variable_info.remain_store_size;
+ *max_variable_size = efi_data(op).u.query_variable_info.max_size;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
+{
+ struct xen_platform_op op = INIT_EFI_OP(get_next_high_monotonic_count);
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ *count = efi_data(op).misc;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
+ unsigned long count,
+ unsigned long sg_list)
+{
+ struct xen_platform_op op = INIT_EFI_OP(update_capsule);
+
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ set_xen_guest_handle(efi_data(op).u.update_capsule.capsule_header_array,
+ capsules);
+ efi_data(op).u.update_capsule.capsule_count = count;
+ efi_data(op).u.update_capsule.sg_list = sg_list;
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ return efi_data(op).status;
+}
+
+static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
+ unsigned long count,
+ u64 *max_size,
+ int *reset_type)
+{
+ struct xen_platform_op op = INIT_EFI_OP(query_capsule_capabilities);
+
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ set_xen_guest_handle(efi_data(op).u.query_capsule_capabilities.capsule_header_array,
+ capsules);
+ efi_data(op).u.query_capsule_capabilities.capsule_count = count;
+
+ if (HYPERVISOR_dom0_op(&op) < 0)
+ return EFI_UNSUPPORTED;
+
+ *max_size = efi_data(op).u.query_capsule_capabilities.max_capsule_size;
+ *reset_type = efi_data(op).u.query_capsule_capabilities.reset_type;
+
+ return efi_data(op).status;
+}
+
+static efi_char16_t vendor[100] __initdata;
+
+static efi_system_table_t efi_systab_xen __initdata = {
+ .hdr = {
+ .signature = EFI_SYSTEM_TABLE_SIGNATURE,
+ .revision = 0, /* Initialized later. */
+ .headersize = 0, /* Ignored by Linux Kernel. */
+ .crc32 = 0, /* Ignored by Linux Kernel. */
+ .reserved = 0
+ },
+ .fw_vendor = EFI_INVALID_TABLE_ADDR, /* Initialized later. */
+ .fw_revision = 0, /* Initialized later. */
+ .con_in_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .con_in = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .con_out_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .con_out = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .stderr_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .stderr = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .runtime = (efi_runtime_services_t *)EFI_INVALID_TABLE_ADDR,
+ /* Not used under Xen. */
+ .boottime = (efi_boot_services_t *)EFI_INVALID_TABLE_ADDR,
+ /* Not used under Xen. */
+ .nr_tables = 0, /* Initialized later. */
+ .tables = EFI_INVALID_TABLE_ADDR /* Initialized later. */
+};
+
+static const struct efi efi_xen __initconst = {
+ .systab = NULL, /* Initialized later. */
+ .runtime_version = 0, /* Initialized later. */
+ .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,
+ .fw_vendor = EFI_INVALID_TABLE_ADDR,
+ .runtime = EFI_INVALID_TABLE_ADDR,
+ .config_table = EFI_INVALID_TABLE_ADDR,
+ .get_time = xen_efi_get_time,
+ .set_time = xen_efi_set_time,
+ .get_wakeup_time = xen_efi_get_wakeup_time,
+ .set_wakeup_time = xen_efi_set_wakeup_time,
+ .get_variable = xen_efi_get_variable,
+ .get_next_variable = xen_efi_get_next_variable,
+ .set_variable = xen_efi_set_variable,
+ .query_variable_info = xen_efi_query_variable_info,
+ .update_capsule = xen_efi_update_capsule,
+ .query_capsule_caps = xen_efi_query_capsule_caps,
+ .get_next_high_mono_count = xen_efi_get_next_high_mono_count,
+ .reset_system = NULL, /* Functionality provided by Xen. */
+ .set_virtual_address_map = NULL, /* Not used under Xen. */
+ .memmap = NULL, /* Not used under Xen. */
+ .flags = 0 /* Initialized later. */
+};
+
+efi_system_table_t __init *xen_efi_probe(void)
+{
+ struct xen_platform_op op = {
+ .cmd = XENPF_firmware_info,
+ .u.firmware_info = {
+ .type = XEN_FW_EFI_INFO,
+ .index = XEN_FW_EFI_CONFIG_TABLE
+ }
+ };
+ union xenpf_efi_info *info = &op.u.firmware_info.u.efi_info;
+
+ if (!xen_initial_domain() || HYPERVISOR_dom0_op(&op) < 0)
+ return NULL;
+
+ /* Here we know that Xen runs on EFI platform. */
+
+ efi = efi_xen;
+
+ efi_systab_xen.tables = info->cfg.addr;
+ efi_systab_xen.nr_tables = info->cfg.nent;
+
+ op.cmd = XENPF_firmware_info;
+ op.u.firmware_info.type = XEN_FW_EFI_INFO;
+ op.u.firmware_info.index = XEN_FW_EFI_VENDOR;
+ info->vendor.bufsz = sizeof(vendor);
+ set_xen_guest_handle(info->vendor.name, vendor);
+
+ if (HYPERVISOR_dom0_op(&op) == 0) {
+ efi_systab_xen.fw_vendor = __pa_symbol(vendor);
+ efi_systab_xen.fw_revision = info->vendor.revision;
+ } else
+ efi_systab_xen.fw_vendor = __pa_symbol(L"UNKNOWN");
+
+ op.cmd = XENPF_firmware_info;
+ op.u.firmware_info.type = XEN_FW_EFI_INFO;
+ op.u.firmware_info.index = XEN_FW_EFI_VERSION;
+
+ if (HYPERVISOR_dom0_op(&op) == 0)
+ efi_systab_xen.hdr.revision = info->version;
+
+ op.cmd = XENPF_firmware_info;
+ op.u.firmware_info.type = XEN_FW_EFI_INFO;
+ op.u.firmware_info.index = XEN_FW_EFI_RT_VERSION;
+
+ if (HYPERVISOR_dom0_op(&op) == 0)
+ efi.runtime_version = info->version;
+
+ return &efi_systab_xen;
+}
#include <linux/ioport.h>
#include <linux/pfn.h>
#include <linux/pstore.h>
+#include <linux/reboot.h>
#include <asm/page.h>
int *reset_type);
typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size);
+void efi_native_runtime_setup(void);
+
/*
* EFI Configuration Table and GUID definitions
*/
extern void efi_initialize_iomem_resources(struct resource *code_resource,
struct resource *data_resource, struct resource *bss_resource);
extern void efi_get_time(struct timespec *now);
-extern int efi_set_rtc_mmss(const struct timespec *now);
extern void efi_reserve_boot_services(void);
extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose);
extern struct efi_memory_map memmap;
+extern int efi_reboot_quirk_mode;
+extern bool efi_poweroff_required(void);
+
/* Iterate through an efi_memory_map */
#define for_each_efi_memory_desc(m, md) \
for ((md) = (m)->map; \
#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
#define EFI_64BIT 5 /* Is the firmware 64-bit? */
-#define EFI_ARCH_1 6 /* First arch-specific bit */
+#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
+#define EFI_ARCH_1 7 /* First arch-specific bit */
#ifdef CONFIG_EFI
/*
{
return test_bit(feature, &efi.flags) != 0;
}
+extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
#else
static inline bool efi_enabled(int feature)
{
return false;
}
+static inline void
+efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
#endif
/*
struct efivars {
/*
* ->lock protects two things:
- * 1) ->list - adds, removals, reads, writes
- * 2) ops.[gs]et_variable() calls.
- * It must not be held when creating sysfs entries or calling kmalloc.
- * ops.get_next_variable() is only called from register_efivars()
- * or efivar_update_sysfs_entries(),
- * which is protected by the BKL, so that path is safe.
+ * 1) efivarfs_list and efivars_sysfs_list
+ * 2) ->ops calls
*/
spinlock_t lock;
struct kset *kset;
efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
#endif
+/* prototypes shared between arch specific and generic stub code */
+
+#define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
+#define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
+
+void efi_printk(efi_system_table_t *sys_table_arg, char *str);
+
+void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
+ unsigned long addr);
+
+char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
+ efi_loaded_image_t *image, int *cmd_line_len);
+
+efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
+ efi_memory_desc_t **map,
+ unsigned long *map_size,
+ unsigned long *desc_size,
+ u32 *desc_ver,
+ unsigned long *key_ptr);
+
+efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
+ unsigned long size, unsigned long align,
+ unsigned long *addr);
+
+efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
+ unsigned long size, unsigned long align,
+ unsigned long *addr, unsigned long max);
+
+efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
+ unsigned long *image_addr,
+ unsigned long image_size,
+ unsigned long alloc_size,
+ unsigned long preferred_addr,
+ unsigned long alignment);
+
+efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
+ efi_loaded_image_t *image,
+ char *cmd_line, char *option_string,
+ unsigned long max_addr,
+ unsigned long *load_addr,
+ unsigned long *load_size);
+
#endif /* _LINUX_EFI_H */
};
DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);
+#define XENPF_efi_runtime_call 49
+#define XEN_EFI_get_time 1
+#define XEN_EFI_set_time 2
+#define XEN_EFI_get_wakeup_time 3
+#define XEN_EFI_set_wakeup_time 4
+#define XEN_EFI_get_next_high_monotonic_count 5
+#define XEN_EFI_get_variable 6
+#define XEN_EFI_set_variable 7
+#define XEN_EFI_get_next_variable_name 8
+#define XEN_EFI_query_variable_info 9
+#define XEN_EFI_query_capsule_capabilities 10
+#define XEN_EFI_update_capsule 11
+
+struct xenpf_efi_runtime_call {
+ uint32_t function;
+ /*
+ * This field is generally used for per sub-function flags (defined
+ * below), except for the XEN_EFI_get_next_high_monotonic_count case,
+ * where it holds the single returned value.
+ */
+ uint32_t misc;
+ xen_ulong_t status;
+ union {
+#define XEN_EFI_GET_TIME_SET_CLEARS_NS 0x00000001
+ struct {
+ struct xenpf_efi_time {
+ uint16_t year;
+ uint8_t month;
+ uint8_t day;
+ uint8_t hour;
+ uint8_t min;
+ uint8_t sec;
+ uint32_t ns;
+ int16_t tz;
+ uint8_t daylight;
+ } time;
+ uint32_t resolution;
+ uint32_t accuracy;
+ } get_time;
+
+ struct xenpf_efi_time set_time;
+
+#define XEN_EFI_GET_WAKEUP_TIME_ENABLED 0x00000001
+#define XEN_EFI_GET_WAKEUP_TIME_PENDING 0x00000002
+ struct xenpf_efi_time get_wakeup_time;
+
+#define XEN_EFI_SET_WAKEUP_TIME_ENABLE 0x00000001
+#define XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY 0x00000002
+ struct xenpf_efi_time set_wakeup_time;
+
+#define XEN_EFI_VARIABLE_NON_VOLATILE 0x00000001
+#define XEN_EFI_VARIABLE_BOOTSERVICE_ACCESS 0x00000002
+#define XEN_EFI_VARIABLE_RUNTIME_ACCESS 0x00000004
+ struct {
+ GUEST_HANDLE(void) name; /* UCS-2/UTF-16 string */
+ xen_ulong_t size;
+ GUEST_HANDLE(void) data;
+ struct xenpf_efi_guid {
+ uint32_t data1;
+ uint16_t data2;
+ uint16_t data3;
+ uint8_t data4[8];
+ } vendor_guid;
+ } get_variable, set_variable;
+
+ struct {
+ xen_ulong_t size;
+ GUEST_HANDLE(void) name; /* UCS-2/UTF-16 string */
+ struct xenpf_efi_guid vendor_guid;
+ } get_next_variable_name;
+
+ struct {
+ uint32_t attr;
+ uint64_t max_store_size;
+ uint64_t remain_store_size;
+ uint64_t max_size;
+ } query_variable_info;
+
+ struct {
+ GUEST_HANDLE(void) capsule_header_array;
+ xen_ulong_t capsule_count;
+ uint64_t max_capsule_size;
+ uint32_t reset_type;
+ } query_capsule_capabilities;
+
+ struct {
+ GUEST_HANDLE(void) capsule_header_array;
+ xen_ulong_t capsule_count;
+ uint64_t sg_list; /* machine address */
+ } update_capsule;
+ } u;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xenpf_efi_runtime_call);
+
+#define XEN_FW_EFI_VERSION 0
+#define XEN_FW_EFI_CONFIG_TABLE 1
+#define XEN_FW_EFI_VENDOR 2
+#define XEN_FW_EFI_MEM_INFO 3
+#define XEN_FW_EFI_RT_VERSION 4
+
#define XENPF_firmware_info 50
#define XEN_FW_DISK_INFO 1 /* from int 13 AH=08/41/48 */
#define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
#define XEN_FW_VBEDDC_INFO 3 /* from int 10 AX=4f15 */
+#define XEN_FW_EFI_INFO 4 /* from EFI */
#define XEN_FW_KBD_SHIFT_FLAGS 5 /* Int16, Fn02: Get keyboard shift flags. */
+
struct xenpf_firmware_info {
/* IN variables. */
uint32_t type;
GUEST_HANDLE(uchar) edid;
} vbeddc_info; /* XEN_FW_VBEDDC_INFO */
+ union xenpf_efi_info {
+ uint32_t version;
+ struct {
+ uint64_t addr; /* EFI_CONFIGURATION_TABLE */
+ uint32_t nent;
+ } cfg;
+ struct {
+ uint32_t revision;
+ uint32_t bufsz; /* input, in bytes */
+ GUEST_HANDLE(void) name;
+ /* UCS-2/UTF-16 string */
+ } vendor;
+ struct {
+ uint64_t addr;
+ uint64_t size;
+ uint64_t attr;
+ uint32_t type;
+ } mem;
+ } efi_info; /* XEN_FW_EFI_INFO */
+
uint8_t kbd_shift_flags; /* XEN_FW_KBD_SHIFT_FLAGS */
} u;
};
struct xenpf_read_memtype read_memtype;
struct xenpf_microcode_update microcode;
struct xenpf_platform_quirk platform_quirk;
+ struct xenpf_efi_runtime_call efi_runtime_call;
struct xenpf_firmware_info firmware_info;
struct xenpf_enter_acpi_sleep enter_acpi_sleep;
struct xenpf_change_freq change_freq;
#include <linux/percpu.h>
#include <linux/notifier.h>
+#include <linux/efi.h>
#include <asm/xen/interface.h>
DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
int numpgs, struct page **pages);
bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
+
+#ifdef CONFIG_XEN_EFI
+extern efi_system_table_t *xen_efi_probe(void);
+#else
+static inline efi_system_table_t __init *xen_efi_probe(void)
+{
+ return NULL;
+}
+#endif
+
#endif /* INCLUDE_XEN_OPS_H */
git.openpandora.org / pandora-kernel.git / commitdiff