+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Extensible Firmware Interface
* Based on 'Extensible Firmware Interface Specification' version 0.9,
#ifndef _EFI_H
#define _EFI_H
+#include <linux/linkage.h>
#include <linux/string.h>
#include <linux/types.h>
-#ifdef CONFIG_EFI_STUB_64BIT
-/* EFI uses the Microsoft ABI which is not the default for GCC */
+/*
+ * EFI on x86_64 uses the Microsoft ABI which is not the default for GCC.
+ *
+ * There are two scenarios for EFI on x86_64: building a 64-bit EFI stub
+ * codes (CONFIG_EFI_STUB_64BIT) and building a 64-bit U-Boot (CONFIG_X86_64).
+ * Either needs to be properly built with the '-m64' compiler flag, and hence
+ * it is enough to only check the compiler provided define __x86_64__ here.
+ */
+#ifdef __x86_64__
#define EFIAPI __attribute__((ms_abi))
+#define efi_va_list __builtin_ms_va_list
+#define efi_va_start __builtin_ms_va_start
+#define efi_va_arg __builtin_va_arg
+#define efi_va_end __builtin_ms_va_end
#else
-#define EFIAPI
-#endif
+#define EFIAPI asmlinkage
+#define efi_va_list va_list
+#define efi_va_start va_start
+#define efi_va_arg va_arg
+#define efi_va_end va_end
+#endif /* __x86_64__ */
+
+#define EFI32_LOADER_SIGNATURE "EL32"
+#define EFI64_LOADER_SIGNATURE "EL64"
struct efi_device_path;
-#define EFI_BITS_PER_LONG BITS_PER_LONG
-
-/* With 64-bit EFI stub, EFI_BITS_PER_LONG has to be 64 */
-#ifdef CONFIG_EFI_STUB_64BIT
-#undef EFI_BITS_PER_LONG
-#define EFI_BITS_PER_LONG 64
-#endif
-
-#define EFI_SUCCESS 0
-#define EFI_LOAD_ERROR (1 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_INVALID_PARAMETER (2 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_UNSUPPORTED (3 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_BAD_BUFFER_SIZE (4 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_BUFFER_TOO_SMALL (5 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_NOT_READY (6 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_DEVICE_ERROR (7 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_WRITE_PROTECTED (8 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_OUT_OF_RESOURCES (9 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_NOT_FOUND (14 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_ACCESS_DENIED (15 | (1UL << (EFI_BITS_PER_LONG - 1)))
-#define EFI_SECURITY_VIOLATION (26 | (1UL << (EFI_BITS_PER_LONG - 1)))
+typedef struct {
+ u8 b[16];
+} efi_guid_t __attribute__((aligned(8)));
+
+#define EFI_BITS_PER_LONG (sizeof(long) * 8)
+
+/* Bit mask for EFI status code with error */
+#define EFI_ERROR_MASK (1UL << (EFI_BITS_PER_LONG - 1))
+/* Status codes returned by EFI protocols */
+#define EFI_SUCCESS 0
+#define EFI_LOAD_ERROR (EFI_ERROR_MASK | 1)
+#define EFI_INVALID_PARAMETER (EFI_ERROR_MASK | 2)
+#define EFI_UNSUPPORTED (EFI_ERROR_MASK | 3)
+#define EFI_BAD_BUFFER_SIZE (EFI_ERROR_MASK | 4)
+#define EFI_BUFFER_TOO_SMALL (EFI_ERROR_MASK | 5)
+#define EFI_NOT_READY (EFI_ERROR_MASK | 6)
+#define EFI_DEVICE_ERROR (EFI_ERROR_MASK | 7)
+#define EFI_WRITE_PROTECTED (EFI_ERROR_MASK | 8)
+#define EFI_OUT_OF_RESOURCES (EFI_ERROR_MASK | 9)
+#define EFI_VOLUME_CORRUPTED (EFI_ERROR_MASK | 10)
+#define EFI_VOLUME_FULL (EFI_ERROR_MASK | 11)
+#define EFI_NO_MEDIA (EFI_ERROR_MASK | 12)
+#define EFI_MEDIA_CHANGED (EFI_ERROR_MASK | 13)
+#define EFI_NOT_FOUND (EFI_ERROR_MASK | 14)
+#define EFI_ACCESS_DENIED (EFI_ERROR_MASK | 15)
+#define EFI_NO_RESPONSE (EFI_ERROR_MASK | 16)
+#define EFI_NO_MAPPING (EFI_ERROR_MASK | 17)
+#define EFI_TIMEOUT (EFI_ERROR_MASK | 18)
+#define EFI_NOT_STARTED (EFI_ERROR_MASK | 19)
+#define EFI_ALREADY_STARTED (EFI_ERROR_MASK | 20)
+#define EFI_ABORTED (EFI_ERROR_MASK | 21)
+#define EFI_ICMP_ERROR (EFI_ERROR_MASK | 22)
+#define EFI_TFTP_ERROR (EFI_ERROR_MASK | 23)
+#define EFI_PROTOCOL_ERROR (EFI_ERROR_MASK | 24)
+#define EFI_INCOMPATIBLE_VERSION (EFI_ERROR_MASK | 25)
+#define EFI_SECURITY_VIOLATION (EFI_ERROR_MASK | 26)
+#define EFI_CRC_ERROR (EFI_ERROR_MASK | 27)
+#define EFI_END_OF_MEDIA (EFI_ERROR_MASK | 28)
+#define EFI_END_OF_FILE (EFI_ERROR_MASK | 31)
+#define EFI_INVALID_LANGUAGE (EFI_ERROR_MASK | 32)
+#define EFI_COMPROMISED_DATA (EFI_ERROR_MASK | 33)
+#define EFI_IP_ADDRESS_CONFLICT (EFI_ERROR_MASK | 34)
+#define EFI_HTTP_ERROR (EFI_ERROR_MASK | 35)
+
+#define EFI_WARN_DELETE_FAILURE 2
typedef unsigned long efi_status_t;
typedef u64 efi_physical_addr_t;
typedef u64 efi_virtual_addr_t;
-typedef void *efi_handle_t;
+typedef struct efi_object *efi_handle_t;
#define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
- ((efi_guid_t) \
{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, \
((a) >> 24) & 0xff, \
(b) & 0xff, ((b) >> 8) & 0xff, \
(c) & 0xff, ((c) >> 8) & 0xff, \
- (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } })
+ (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) } }
/* Generic EFI table header */
struct efi_table_hdr {
/* The code portions of a loaded Boot Services Driver */
EFI_BOOT_SERVICES_CODE,
/*
- * The data portions of a loaded Boot Serves Driver and
+ * The data portions of a loaded Boot Services Driver and
* the default data allocation type used by a Boot Services
* Driver to allocate pool memory.
*/
* part of the processor.
*/
EFI_PAL_CODE,
+ /*
+ * Non-volatile memory.
+ */
+ EFI_PERSISTENT_MEMORY_TYPE,
EFI_MAX_MEMORY_TYPE,
EFI_TABLE_END, /* For efi_build_mem_table() */
};
/* Attribute values */
-enum {
- EFI_MEMORY_UC_SHIFT = 0, /* uncached */
- EFI_MEMORY_WC_SHIFT = 1, /* write-coalescing */
- EFI_MEMORY_WT_SHIFT = 2, /* write-through */
- EFI_MEMORY_WB_SHIFT = 3, /* write-back */
- EFI_MEMORY_UCE_SHIFT = 4, /* uncached, exported */
- EFI_MEMORY_WP_SHIFT = 12, /* write-protect */
- EFI_MEMORY_RP_SHIFT = 13, /* read-protect */
- EFI_MEMORY_XP_SHIFT = 14, /* execute-protect */
- EFI_MEMORY_RUNTIME_SHIFT = 63, /* range requires runtime mapping */
-
- EFI_MEMORY_RUNTIME = 1ULL << EFI_MEMORY_RUNTIME_SHIFT,
- EFI_MEM_DESC_VERSION = 1,
-};
+#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
+#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
+#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
+#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
+#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
+#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
+#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
+#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
+#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
+#define EFI_MEMORY_MORE_RELIABLE \
+ ((u64)0x0000000000010000ULL) /* higher reliability */
+#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
+#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
+#define EFI_MEM_DESC_VERSION 1
#define EFI_PAGE_SHIFT 12
-#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
+#define EFI_PAGE_SIZE (1ULL << EFI_PAGE_SHIFT)
#define EFI_PAGE_MASK (EFI_PAGE_SIZE - 1)
struct efi_mem_desc {
};
enum efi_locate_search_type {
- all_handles,
- by_register_notify,
- by_protocol
+ ALL_HANDLES,
+ BY_REGISTER_NOTIFY,
+ BY_PROTOCOL
};
struct efi_open_protocol_info_entry {
enum efi_entry_t {
EFIET_END, /* Signals this is the last (empty) entry */
EFIET_MEMORY_MAP,
+ EFIET_GOP_MODE,
+ EFIET_SYS_TABLE,
/* Number of entries */
EFIET_MEMORY_COUNT,
struct efi_mem_desc desc[];
};
+/**
+ * struct efi_entry_gopmode - a GOP mode table passed to U-Boot
+ *
+ * @fb_base: EFI's framebuffer base address
+ * @fb_size: EFI's framebuffer size
+ * @info_size: GOP mode info structure size
+ * @info: Start address of the GOP mode info structure
+ */
+struct efi_entry_gopmode {
+ efi_physical_addr_t fb_base;
+ /*
+ * Not like the ones in 'struct efi_gop_mode' which are 'unsigned
+ * long', @fb_size and @info_size have to be 'u64' here. As the EFI
+ * stub codes may have different bit size from the U-Boot payload,
+ * using 'long' will cause mismatch between the producer (stub) and
+ * the consumer (payload).
+ */
+ u64 fb_size;
+ u64 info_size;
+ /*
+ * We cannot directly use 'struct efi_gop_mode_info info[]' here as
+ * it causes compiler to complain: array type has incomplete element
+ * type 'struct efi_gop_mode_info'.
+ */
+ struct /* efi_gop_mode_info */ {
+ u32 version;
+ u32 width;
+ u32 height;
+ u32 pixel_format;
+ u32 pixel_bitmask[4];
+ u32 pixels_per_scanline;
+ } info[];
+};
+
+/**
+ * struct efi_entry_systable - system table passed to U-Boot
+ *
+ * @sys_table: EFI system table address
+ */
+struct efi_entry_systable {
+ efi_physical_addr_t sys_table;
+};
+
static inline struct efi_mem_desc *efi_get_next_mem_desc(
struct efi_entry_memmap *map, struct efi_mem_desc *desc)
{
/* Start and end of U-Boot image (for payload) */
extern char _binary_u_boot_bin_start[], _binary_u_boot_bin_end[];
+/*
+ * Variable Attributes
+ */
+#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
+#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
+#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
+#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
+#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
+#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
+#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
+
+#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | \
+ EFI_VARIABLE_RUNTIME_ACCESS | \
+ EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
+ EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
+ EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
+ EFI_VARIABLE_APPEND_WRITE)
+
/**
* efi_get_sys_table() - Get access to the main EFI system table
*
projects / oweals / u-boot.git / blobdiff