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Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull EFI changes from Ingo Molnar:
 "Main changes in this cycle are:

   - arm64 efi stub fixes, preservation of FP/SIMD registers across
     firmware calls, and conversion of the EFI stub code into a static
     library - Ard Biesheuvel

   - Xen EFI support - Daniel Kiper

   - Support for autoloading the efivars driver - Lee, Chun-Yi

   - Use the PE/COFF headers in the x86 EFI boot stub to request that
     the stub be loaded with CONFIG_PHYSICAL_ALIGN alignment - Michael
     Brown

   - Consolidate all the x86 EFI quirks into one file - Saurabh Tangri

   - Additional error logging in x86 EFI boot stub - Ulf Winkelvos

   - Support loading initrd above 4G in EFI boot stub - Yinghai Lu

   - EFI reboot patches for ACPI hardware reduced platforms"

* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  efi/arm64: Handle missing virtual mapping for UEFI System Table
  arch/x86/xen: Silence compiler warnings
  xen: Silence compiler warnings
  x86/efi: Request desired alignment via the PE/COFF headers
  x86/efi: Add better error logging to EFI boot stub
  efi: Autoload efivars
  efi: Update stale locking comment for struct efivars
  arch/x86: Remove efi_set_rtc_mmss()
  arch/x86: Replace plain strings with constants
  xen: Put EFI machinery in place
  xen: Define EFI related stuff
  arch/x86: Remove redundant set_bit(EFI_MEMMAP) call
  arch/x86: Remove redundant set_bit(EFI_SYSTEM_TABLES) call
  efi: Introduce EFI_PARAVIRT flag
  arch/x86: Do not access EFI memory map if it is not available
  efi: Use early_mem*() instead of early_io*()
  arch/ia64: Define early_memunmap()
  x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag
  efi/reboot: Allow powering off machines using EFI
  efi/reboot: Add generic wrapper around EfiResetSystem()
  ...
This commit is contained in:
Linus Torvalds
2014-08-04 17:13:50 -07:00
parent e9c9eecaba 99a5603e2a
commit 76f09aa464
40 changed files with 1509 additions and 623 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
include/linux/efi.h
View File

@@ -20,6 +20,7 @@
#include <linux/ioport.h>
#include <linux/pfn.h>
#include <linux/pstore.h>
#include <linux/reboot.h>
#include <asm/page.h>
@@ -521,6 +522,8 @@ typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
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
*/
@@ -870,11 +873,13 @@ extern int __init efi_uart_console_only (void);
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; \
@@ -916,7 +921,8 @@ extern int __init efi_setup_pcdp_console(char *);
#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
/*
@@ -926,11 +932,14 @@ static inline bool efi_enabled(int feature)
{
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
/*
@@ -1031,12 +1040,8 @@ struct efivar_operations {
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;
@@ -1161,4 +1166,46 @@ static inline void
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 */

123
include/xen/interface/platform.h
View File

@@ -108,11 +108,113 @@ struct xenpf_platform_quirk {
};
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;
@@ -144,6 +246,26 @@ struct xenpf_firmware_info {
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;
};
@@ -362,6 +484,7 @@ struct xen_platform_op {
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;

11
include/xen/xen-ops.h
View File

@@ -3,6 +3,7 @@
#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);
@@ -35,4 +36,14 @@ int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
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 */