diff mbox series

[6/7] MIPS: Define MIPS EFI related bits everywhere

Message ID 20240517-mips-efi-v1-6-79096e3ca3b3@flygoat.com
State New
Delegated to: Heinrich Schuchardt
Headers show
Series MIPS: Enable EFI support | expand

Commit Message

Jiaxun Yang May 17, 2024, 4:32 p.m. UTC 
Various file names, instruction defines, magic numbers
related to MIPS's EFI implementation.

PE magic numbers are from winnt.h, DHCP numbers are
from IANA page, boot file names are from other
implementations.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 include/asm-generic/pe.h                          |  5 +++++
 include/config_distro_bootcmd.h                   |  6 ++++++
 include/efi_default_filename.h                    |  8 ++++++++
 include/elf.h                                     |  8 ++++++++
 lib/efi_loader/efi_image_loader.c                 | 17 +++++++++++++++++
 lib/efi_selftest/efi_selftest_miniapp_exception.c |  2 ++
 6 files changed, 46 insertions(+)
diff mbox series

Patch

diff --git a/include/asm-generic/pe.h b/include/asm-generic/pe.h
index cd5b6ad62bf0..42c4cbedbc95 100644
--- a/include/asm-generic/pe.h
+++ b/include/asm-generic/pe.h
@@ -31,6 +31,11 @@ 
 
 /* Machine types */
 #define IMAGE_FILE_MACHINE_I386			0x014c
+#define IMAGE_FILE_MACHINE_R3000_BE		0x0160
+#define IMAGE_FILE_MACHINE_R3000		0x0162
+#define IMAGE_FILE_MACHINE_R4000_BE		0x0164
+#define IMAGE_FILE_MACHINE_R4000		0x0166
+#define IMAGE_FILE_MACHINE_R10000		0x0168
 #define IMAGE_FILE_MACHINE_ARM			0x01c0
 #define IMAGE_FILE_MACHINE_THUMB		0x01c2
 #define IMAGE_FILE_MACHINE_ARMNT		0x01c4
diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h
index 2a136b96a6d9..9e03d10acec5 100644
--- a/include/config_distro_bootcmd.h
+++ b/include/config_distro_bootcmd.h
@@ -366,6 +366,12 @@ 
 #elif defined(CONFIG_ARCH_RV64I) || ((defined(__riscv) && __riscv_xlen == 64))
 #define BOOTENV_EFI_PXE_ARCH "0x1b"
 #define BOOTENV_EFI_PXE_VCI "PXEClient:Arch:00027:UNDI:003000"
+#elif defined(CONFIG_CPU_MIPS32) || ((defined(__mips) && __mips == 32))
+#define BOOTENV_EFI_PXE_ARCH "0x21"
+#define BOOTENV_EFI_PXE_VCI "PXEClient:Arch:00033:UNDI:003000"
+#elif defined(CONFIG_CPU_MIPS64) || ((defined(__mips) && __mips == 64))
+#define BOOTENV_EFI_PXE_ARCH "0x22"
+#define BOOTENV_EFI_PXE_VCI "PXEClient:Arch:00034:UNDI:003000"
 #elif defined(CONFIG_SANDBOX)
 # error "sandbox EFI support is only supported on ARM and x86"
 #else
diff --git a/include/efi_default_filename.h b/include/efi_default_filename.h
index 77932984b557..eb94a54514bc 100644
--- a/include/efi_default_filename.h
+++ b/include/efi_default_filename.h
@@ -47,6 +47,14 @@ 
 #define BOOTEFI_NAME "BOOTRISCV32.EFI"
 #elif defined(CONFIG_ARCH_RV64I)
 #define BOOTEFI_NAME "BOOTRISCV64.EFI"
+#elif defined(CONFIG_CPU_MIPS32) && defined(CONFIG_SYS_BIG_ENDIAN)
+#define BOOTEFI_NAME "BOOTMIPS.EFI"
+#elif defined(CONFIG_CPU_MIPS32) && defined(CONFIG_SYS_LITTLE_ENDIAN)
+#define BOOTEFI_NAME "BOOTMIPSEL.EFI"
+#elif defined(CONFIG_CPU_MIPS64) && defined(CONFIG_SYS_BIG_ENDIAN)
+#define BOOTEFI_NAME "BOOTMIPS64.EFI"
+#elif defined(CONFIG_CPU_MIPS64) && defined(CONFIG_SYS_LITTLE_ENDIAN)
+#define BOOTEFI_NAME "BOOTMIPS64EL.EFI"
 #else
 #error Unsupported UEFI architecture
 #endif
diff --git a/include/elf.h b/include/elf.h
index a4ba74d8abeb..95de6ffbce31 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -545,6 +545,9 @@  typedef struct {
 #define DT_LOPROC	0x70000000	/* reserved range for processor */
 #define DT_HIPROC	0x7fffffff	/* specific dynamic array tags */
 
+/* MIPS */
+#define DT_MIPS_LOCAL_GOTNO	0x7000000a	/* Number of local got entries */
+
 /* Dynamic Tag Flags - d_un.d_val */
 #define DF_ORIGIN	0x01		/* Object may use DF_ORIGIN */
 #define DF_SYMBOLIC	0x02		/* Symbol resolutions starts here */
@@ -699,6 +702,11 @@  unsigned long elf_hash(const unsigned char *name);
 #define R_RISCV_64		2
 #define R_RISCV_RELATIVE	3
 
+/* MIPS Relocations */
+#define R_MIPS_NONE		0
+#define R_MIPS_REL32		3
+#define R_MIPS_64		18
+
 #ifndef __ASSEMBLY__
 int valid_elf_image(unsigned long addr);
 unsigned long load_elf64_image_phdr(unsigned long addr);
diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c
index cedc4d822fe7..8df469851851 100644
--- a/lib/efi_loader/efi_image_loader.c
+++ b/lib/efi_loader/efi_image_loader.c
@@ -51,6 +51,23 @@  static int machines[] = {
 	IMAGE_FILE_MACHINE_RISCV64,
 #endif
 
+#if defined(__mips__) && (__mips == 32) && defined(__BIG_ENDIAN)
+	IMAGE_FILE_MACHINE_R3000_BE,
+#endif
+
+#if defined(__mips__) && (__mips == 32) && defined(__LITTLE_ENDIAN)
+	IMAGE_FILE_MACHINE_R3000,
+#endif
+
+#if defined(__mips__) && (__mips == 64) && defined(__BIG_ENDIAN)
+	IMAGE_FILE_MACHINE_R4000_BE,
+#endif
+
+#if defined(__mips__) && (__mips == 64) && defined(__LITTLE_ENDIAN)
+	IMAGE_FILE_MACHINE_R4000,
+	IMAGE_FILE_MACHINE_R10000,
+#endif
+
 	0 };
 
 /**
diff --git a/lib/efi_selftest/efi_selftest_miniapp_exception.c b/lib/efi_selftest/efi_selftest_miniapp_exception.c
index f668cdac4ab2..f3b4ee926f8f 100644
--- a/lib/efi_selftest/efi_selftest_miniapp_exception.c
+++ b/lib/efi_selftest/efi_selftest_miniapp_exception.c
@@ -33,6 +33,8 @@  efi_status_t EFIAPI efi_main(efi_handle_t handle,
 	asm volatile (".word 0xe7f7defb\n");
 #elif defined(CONFIG_RISCV)
 	asm volatile (".word 0xffffffff\n");
+#elif defined(CONFIG_MIPS)
+	asm volatile ("break 0xf\n");
 #elif defined(CONFIG_X86)
 	asm volatile (".word 0xffff\n");
 #elif defined(CONFIG_SANDBOX)