diff options
| -rw-r--r-- | arch/arm/lib/crt0_aarch64_efi.S | 4 | ||||
| -rw-r--r-- | arch/arm/lib/crt0_arm_efi.S | 48 | ||||
| -rw-r--r-- | arch/arm/lib/elf_arm_efi.lds | 28 | ||||
| -rw-r--r-- | arch/riscv/lib/crt0_riscv_efi.S | 4 | ||||
| -rw-r--r-- | include/asm-generic/pe.h | 3 | ||||
| -rw-r--r-- | lib/efi_driver/Makefile | 1 | ||||
| -rw-r--r-- | lib/efi_driver/efi_reset_riscv.c | 29 | ||||
| -rw-r--r-- | lib/efi_loader/Kconfig | 2 |
8 files changed, 100 insertions, 19 deletions
diff --git a/arch/arm/lib/crt0_aarch64_efi.S b/arch/arm/lib/crt0_aarch64_efi.S index 3c2cef6ec73..fe6eca576ec 100644 --- a/arch/arm/lib/crt0_aarch64_efi.S +++ b/arch/arm/lib/crt0_aarch64_efi.S @@ -66,7 +66,11 @@ extra_header_fields: .long _start - ImageBase /* SizeOfHeaders */ .long 0 /* CheckSum */ .short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */ +#if CONFIG_VENDOR_EFI .short 0 /* DllCharacteristics */ +#else + .short IMAGE_DLLCHARACTERISTICS_NX_COMPAT +#endif .quad 0 /* SizeOfStackReserve */ .quad 0 /* SizeOfStackCommit */ .quad 0 /* SizeOfHeapReserve */ diff --git a/arch/arm/lib/crt0_arm_efi.S b/arch/arm/lib/crt0_arm_efi.S index 75ee37b7d31..b5dfd4e3819 100644 --- a/arch/arm/lib/crt0_arm_efi.S +++ b/arch/arm/lib/crt0_arm_efi.S @@ -23,7 +23,7 @@ pe_header: .long IMAGE_NT_SIGNATURE /* 'PE' */ coff_header: .short IMAGE_FILE_MACHINE_THUMB /* Mixed ARM/Thumb */ - .short 2 /* nr_sections */ + .short 3 /* nr_sections */ .long 0 /* TimeDateStamp */ .long 0 /* PointerToSymbolTable */ .long 0 /* NumberOfSymbols */ @@ -65,7 +65,11 @@ extra_header_fields: .long _start - image_base /* SizeOfHeaders */ .long 0 /* CheckSum */ .short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */ +#if CONFIG_VENDOR_EFI .short 0 /* DllCharacteristics */ +#else + .short IMAGE_DLLCHARACTERISTICS_NX_COMPAT +#endif .long 0 /* SizeOfStackReserve */ .long 0 /* SizeOfStackCommit */ .long 0 /* SizeOfHeapReserve */ @@ -98,31 +102,53 @@ section_table: .long 0 /* PointerToLineNumbers */ .short 0 /* NumberOfRelocations */ .short 0 /* NumberOfLineNumbers */ - .long 0x42100040 /* Characteristics (section flags) */ + /* Characteristics (section flags) */ + .long (IMAGE_SCN_MEM_READ | \ + IMAGE_SCN_MEM_DISCARDABLE | \ + IMAGE_SCN_CNT_INITIALIZED_DATA) .ascii ".text" .byte 0 .byte 0 .byte 0 /* end of 0 padding of section name */ - .long _edata - _start /* VirtualSize */ + .long _text_size /* VirtualSize */ .long _start - image_base /* VirtualAddress */ - .long _edata - _start /* SizeOfRawData */ + .long _text_size /* SizeOfRawData */ .long _start - image_base /* PointerToRawData */ + .long 0 /* PointerToRelocations */ + .long 0 /* PointerToLineNumbers */ + .short 0 /* NumberOfRelocations */ + .short 0 /* NumberOfLineNumbers */ + /* Characteristics (section flags) */ + .long (IMAGE_SCN_MEM_READ | \ + IMAGE_SCN_MEM_EXECUTE | \ + IMAGE_SCN_CNT_CODE) - .long 0 /* PointerToRelocations (0 for executables) */ - .long 0 /* PointerToLineNumbers (0 for executables) */ - .short 0 /* NumberOfRelocations (0 for executables) */ - .short 0 /* NumberOfLineNumbers (0 for executables) */ - .long 0xe0500020 /* Characteristics (section flags) */ + .ascii ".data" + .byte 0 + .byte 0 + .byte 0 /* end of 0 padding of section name */ + .long _data_size /* VirtualSize */ + .long _data - image_base /* VirtualAddress */ + .long _data_size /* SizeOfRawData */ + .long _data - image_base /* PointerToRawData */ + .long 0 /* PointerToRelocations */ + .long 0 /* PointerToLineNumbers */ + .short 0 /* NumberOfRelocations */ + .short 0 /* NumberOfLineNumbers */ + /* Characteristics (section flags) */ + .long (IMAGE_SCN_MEM_WRITE | \ + IMAGE_SCN_MEM_READ | \ + IMAGE_SCN_CNT_INITIALIZED_DATA) - .align 9 + .align 12 _start: stmfd sp!, {r0-r2, lr} adr r1, .L_DYNAMIC ldr r0, [r1] add r1, r0, r1 - adr r0, image_base + adrl r0, image_base bl _relocate teq r0, #0 bne 0f diff --git a/arch/arm/lib/elf_arm_efi.lds b/arch/arm/lib/elf_arm_efi.lds index 767ebda6351..41440594aa6 100644 --- a/arch/arm/lib/elf_arm_efi.lds +++ b/arch/arm/lib/elf_arm_efi.lds @@ -7,6 +7,12 @@ OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") OUTPUT_ARCH(arm) + +PHDRS +{ + data PT_LOAD FLAGS(3); /* PF_W | PF_X */ +} + ENTRY(_start) SECTIONS { @@ -18,11 +24,13 @@ SECTIONS *(.gnu.linkonce.t.*) *(.srodata) *(.rodata*) + . = ALIGN(16); + *(.dynamic); . = ALIGN(512); } _etext = .; _text_size = . - _text; - .dynamic : { *(.dynamic) } + . = ALIGN(4096); .data : { _data = .; *(.sdata) @@ -47,14 +55,20 @@ SECTIONS . = ALIGN(512); _bss_end = .; _edata = .; - } - .rel.dyn : { *(.rel.dyn) } - .rel.plt : { *(.rel.plt) } - .rel.got : { *(.rel.got) } - .rel.data : { *(.rel.data) *(.rel.data*) } - _data_size = . - _etext; + } :data + _data_size = . - _data; /DISCARD/ : { + /* + * We don't support relocations. These would have to be + * translated from ELF to PE format and added to the .reloc + * section. + */ + *(.rel.dyn) + *(.rel.plt) + *(.rel.got) + *(.rel.data) + *(.rel.data*) *(.rel.reloc) *(.eh_frame) *(.note.GNU-stack) diff --git a/arch/riscv/lib/crt0_riscv_efi.S b/arch/riscv/lib/crt0_riscv_efi.S index 46b08552371..c7a4559eac8 100644 --- a/arch/riscv/lib/crt0_riscv_efi.S +++ b/arch/riscv/lib/crt0_riscv_efi.S @@ -96,7 +96,11 @@ extra_header_fields: .long _start - ImageBase /* SizeOfHeaders */ .long 0 /* CheckSum */ .short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */ +#if CONFIG_VENDOR_EFI .short 0 /* DllCharacteristics */ +#else + .short IMAGE_DLLCHARACTERISTICS_NX_COMPAT +#endif #if __riscv_xlen == 32 .long 0 /* SizeOfStackReserve */ .long 0 /* SizeOfStackCommit */ diff --git a/include/asm-generic/pe.h b/include/asm-generic/pe.h index b9d674b6da4..cd5b6ad62bf 100644 --- a/include/asm-generic/pe.h +++ b/include/asm-generic/pe.h @@ -51,6 +51,9 @@ #define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12 #define IMAGE_SUBSYSTEM_EFI_ROM 13 +/* DLL characteristics */ +#define IMAGE_DLLCHARACTERISTICS_NX_COMPAT 0x100 + /* Section flags */ #define IMAGE_SCN_CNT_CODE 0x00000020 #define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 diff --git a/lib/efi_driver/Makefile b/lib/efi_driver/Makefile index f2b6c05cc24..0da20fe91d3 100644 --- a/lib/efi_driver/Makefile +++ b/lib/efi_driver/Makefile @@ -9,3 +9,4 @@ obj-y += efi_uclass.o ifeq ($(CONFIG_PARTITIONS),y) obj-y += efi_block_device.o endif +obj-$(CONFIG_SYSRESET_SBI) += efi_reset_riscv.o diff --git a/lib/efi_driver/efi_reset_riscv.c b/lib/efi_driver/efi_reset_riscv.c new file mode 100644 index 00000000000..89b23522e95 --- /dev/null +++ b/lib/efi_driver/efi_reset_riscv.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <efi_loader.h> +#include <asm/sbi.h> + +void __efi_runtime EFIAPI efi_reset_system(enum efi_reset_type reset_type, + efi_status_t reset_status, + unsigned long data_size, + void *reset_data) +{ + register unsigned long eid asm("a7") = SBI_EXT_SRST; + register unsigned long fid asm("a6") = SBI_EXT_SRST_RESET; + register unsigned long type asm("a0"); + register unsigned long reason asm("a1") = SBI_SRST_RESET_REASON_NONE; + + switch (reset_type) { + case EFI_RESET_WARM: + type = SBI_SRST_RESET_TYPE_WARM_REBOOT; + break; + case EFI_RESET_SHUTDOWN: + type = SBI_SRST_RESET_TYPE_SHUTDOWN; + break; + default: + type = SBI_SRST_RESET_TYPE_COLD_REBOOT; + break; + } + asm volatile ("ecall\n" + : : "r" (eid), "r" (fid), "r" (type), "r" (reason)); +} diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig index db5571de1d9..a7c3e05c13a 100644 --- a/lib/efi_loader/Kconfig +++ b/lib/efi_loader/Kconfig @@ -366,7 +366,7 @@ config EFI_HAVE_RUNTIME_RESET bool default y depends on ARCH_BCM283X || FSL_LAYERSCAPE || PSCI_RESET || \ - SANDBOX || SYSRESET_X86 + SANDBOX || SYSRESET_SBI || SYSRESET_X86 config EFI_GRUB_ARM32_WORKAROUND bool "Workaround for GRUB on 32bit ARM" |