diff options
Diffstat (limited to 'arch')
26 files changed, 364 insertions, 70 deletions
diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h index 3088ef72704e..4bdd930167c0 100644 --- a/arch/arm/include/asm/efi.h +++ b/arch/arm/include/asm/efi.h @@ -17,6 +17,7 @@ #ifdef CONFIG_EFI void efi_init(void); +void arm_efi_init(void); int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md); int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md); @@ -37,7 +38,7 @@ void efi_virtmap_load(void); void efi_virtmap_unload(void); #else -#define efi_init() +#define arm_efi_init() #endif /* CONFIG_EFI */ /* arch specific definitions used by the stub code */ diff --git a/arch/arm/kernel/efi.c b/arch/arm/kernel/efi.c index e57dbcc89123..e50ad7eefc02 100644 --- a/arch/arm/kernel/efi.c +++ b/arch/arm/kernel/efi.c @@ -4,6 +4,7 @@ */ #include <linux/efi.h> +#include <linux/memblock.h> #include <asm/efi.h> #include <asm/mach/map.h> #include <asm/mmu_context.h> @@ -73,3 +74,81 @@ int __init efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md) return efi_set_mapping_permissions(mm, md); return 0; } + +static unsigned long __initdata screen_info_table = EFI_INVALID_TABLE_ADDR; +static unsigned long __initdata cpu_state_table = EFI_INVALID_TABLE_ADDR; + +const efi_config_table_type_t efi_arch_tables[] __initconst = { + {LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID, &screen_info_table}, + {LINUX_EFI_ARM_CPU_STATE_TABLE_GUID, &cpu_state_table}, + {} +}; + +static void __init load_screen_info_table(void) +{ + struct screen_info *si; + + if (screen_info_table != EFI_INVALID_TABLE_ADDR) { + si = early_memremap_ro(screen_info_table, sizeof(*si)); + if (!si) { + pr_err("Could not map screen_info config table\n"); + return; + } + screen_info = *si; + early_memunmap(si, sizeof(*si)); + + /* dummycon on ARM needs non-zero values for columns/lines */ + screen_info.orig_video_cols = 80; + screen_info.orig_video_lines = 25; + + if (memblock_is_map_memory(screen_info.lfb_base)) + memblock_mark_nomap(screen_info.lfb_base, + screen_info.lfb_size); + } +} + +static void __init load_cpu_state_table(void) +{ + if (cpu_state_table != EFI_INVALID_TABLE_ADDR) { + struct efi_arm_entry_state *state; + bool dump_state = true; + + state = early_memremap_ro(cpu_state_table, + sizeof(struct efi_arm_entry_state)); + if (state == NULL) { + pr_warn("Unable to map CPU entry state table.\n"); + return; + } + + if ((state->sctlr_before_ebs & 1) == 0) + pr_warn(FW_BUG "EFI stub was entered with MMU and Dcache disabled, please fix your firmware!\n"); + else if ((state->sctlr_after_ebs & 1) == 0) + pr_warn(FW_BUG "ExitBootServices() returned with MMU and Dcache disabled, please fix your firmware!\n"); + else + dump_state = false; + + if (dump_state || efi_enabled(EFI_DBG)) { + pr_info("CPSR at EFI stub entry : 0x%08x\n", + state->cpsr_before_ebs); + pr_info("SCTLR at EFI stub entry : 0x%08x\n", + state->sctlr_before_ebs); + pr_info("CPSR after ExitBootServices() : 0x%08x\n", + state->cpsr_after_ebs); + pr_info("SCTLR after ExitBootServices(): 0x%08x\n", + state->sctlr_after_ebs); + } + early_memunmap(state, sizeof(struct efi_arm_entry_state)); + } +} + +void __init arm_efi_init(void) +{ + efi_init(); + + load_screen_info_table(); + + /* ARM does not permit early mappings to persist across paging_init() */ + efi_memmap_unmap(); + + load_cpu_state_table(); +} diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 1e8a50a97edf..cb88c6e69377 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -1141,7 +1141,7 @@ void __init setup_arch(char **cmdline_p) #endif setup_dma_zone(mdesc); xen_early_init(); - efi_init(); + arm_efi_init(); /* * Make sure the calculation for lowmem/highmem is set appropriately * before reserving/allocating any memory diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 6d9d4a58b898..a82bb3599094 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -151,12 +151,17 @@ libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a # Default target when executing plain make boot := arch/arm64/boot + +ifeq ($(CONFIG_EFI_ZBOOT),) KBUILD_IMAGE := $(boot)/Image.gz +else +KBUILD_IMAGE := $(boot)/vmlinuz.efi +endif -all: Image.gz +all: $(notdir $(KBUILD_IMAGE)) -Image: vmlinux +Image vmlinuz.efi: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ Image.%: Image diff --git a/arch/arm64/boot/.gitignore b/arch/arm64/boot/.gitignore index 9a7a9009d43a..af5dc61f8b43 100644 --- a/arch/arm64/boot/.gitignore +++ b/arch/arm64/boot/.gitignore @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only Image Image.gz +vmlinuz* diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile index a0e3dedd2883..c65aee088410 100644 --- a/arch/arm64/boot/Makefile +++ b/arch/arm64/boot/Makefile @@ -38,3 +38,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE $(obj)/Image.zst: $(obj)/Image FORCE $(call if_changed,zstd) + +EFI_ZBOOT_PAYLOAD := Image +EFI_ZBOOT_BFD_TARGET := elf64-littleaarch64 +EFI_ZBOOT_MACH_TYPE := ARM64 + +include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h index 4aaa5f3d1f65..8151412653de 100644 --- a/arch/arm64/kernel/image-vars.h +++ b/arch/arm64/kernel/image-vars.h @@ -24,9 +24,6 @@ PROVIDE(__efistub_primary_entry_offset = primary_entry - _text); */ PROVIDE(__efistub_memcmp = __pi_memcmp); PROVIDE(__efistub_memchr = __pi_memchr); -PROVIDE(__efistub_memcpy = __pi_memcpy); -PROVIDE(__efistub_memmove = __pi_memmove); -PROVIDE(__efistub_memset = __pi_memset); PROVIDE(__efistub_strlen = __pi_strlen); PROVIDE(__efistub_strnlen = __pi_strnlen); PROVIDE(__efistub_strcmp = __pi_strcmp); @@ -40,16 +37,6 @@ PROVIDE(__efistub__edata = _edata); PROVIDE(__efistub_screen_info = screen_info); PROVIDE(__efistub__ctype = _ctype); -/* - * The __ prefixed memcpy/memset/memmove symbols are provided by KASAN, which - * instruments the conventional ones. Therefore, any references from the EFI - * stub or other position independent, low level C code should be redirected to - * the non-instrumented versions as well. - */ -PROVIDE(__efistub___memcpy = __pi_memcpy); -PROVIDE(__efistub___memmove = __pi_memmove); -PROVIDE(__efistub___memset = __pi_memset); - PROVIDE(__pi___memcpy = __pi_memcpy); PROVIDE(__pi___memmove = __pi_memmove); PROVIDE(__pi___memset = __pi_memset); diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 551dd99e98b8..cfd976065a0d 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -105,8 +105,6 @@ config LOONGARCH select MODULES_USE_ELF_RELA if MODULES select NEED_PER_CPU_EMBED_FIRST_CHUNK select NEED_PER_CPU_PAGE_FIRST_CHUNK - select OF - select OF_EARLY_FLATTREE select PCI select PCI_DOMAINS_GENERIC select PCI_ECAM if ACPI @@ -313,12 +311,20 @@ config DMI config EFI bool "EFI runtime service support" select UCS2_STRING - select EFI_PARAMS_FROM_FDT select EFI_RUNTIME_WRAPPERS help This enables the kernel to use EFI runtime services that are available (such as the EFI variable services). +config EFI_STUB + bool "EFI boot stub support" + default y + depends on EFI + select EFI_GENERIC_STUB + help + This kernel feature allows the kernel to be loaded directly by + EFI firmware without the use of a bootloader. + config SMP bool "Multi-Processing support" help diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile index ec3de6191276..84689c3ee3af 100644 --- a/arch/loongarch/Makefile +++ b/arch/loongarch/Makefile @@ -7,7 +7,14 @@ boot := arch/loongarch/boot KBUILD_DEFCONFIG := loongson3_defconfig -KBUILD_IMAGE = $(boot)/vmlinux +image-name-y := vmlinux +image-name-$(CONFIG_EFI_ZBOOT) := vmlinuz + +ifndef CONFIG_EFI_STUB +KBUILD_IMAGE := $(boot)/vmlinux.elf +else +KBUILD_IMAGE := $(boot)/$(image-name-y).efi +endif # # Select the object file format to substitute into the linker script. @@ -75,6 +82,7 @@ endif head-y := arch/loongarch/kernel/head.o libs-y += arch/loongarch/lib/ +libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a ifeq ($(KBUILD_EXTMOD),) prepare: vdso_prepare @@ -86,13 +94,13 @@ PHONY += vdso_install vdso_install: $(Q)$(MAKE) $(build)=arch/loongarch/vdso $@ -all: $(KBUILD_IMAGE) +all: $(notdir $(KBUILD_IMAGE)) -$(KBUILD_IMAGE): vmlinux - $(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $@ +vmlinux.elf vmlinux.efi vmlinuz.efi: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(bootvars-y) $(boot)/$@ install: - $(Q)install -D -m 755 $(KBUILD_IMAGE) $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) + $(Q)install -D -m 755 $(KBUILD_IMAGE) $(INSTALL_PATH)/$(image-name-y)-$(KERNELRELEASE) $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) diff --git a/arch/loongarch/boot/.gitignore b/arch/loongarch/boot/.gitignore index 49423ee96ef3..e5dc594dc4b6 100644 --- a/arch/loongarch/boot/.gitignore +++ b/arch/loongarch/boot/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only vmlinux* +vmlinuz* diff --git a/arch/loongarch/boot/Makefile b/arch/loongarch/boot/Makefile index 0125b17edc98..4e1c374c5782 100644 --- a/arch/loongarch/boot/Makefile +++ b/arch/loongarch/boot/Makefile @@ -8,9 +8,19 @@ drop-sections := .comment .note .options .note.gnu.build-id strip-flags := $(addprefix --remove-section=,$(drop-sections)) -S OBJCOPYFLAGS_vmlinux.efi := -O binary $(strip-flags) -targets := vmlinux quiet_cmd_strip = STRIP $@ cmd_strip = $(STRIP) -s -o $@ $< -$(obj)/vmlinux: vmlinux FORCE +targets := vmlinux.elf +$(obj)/vmlinux.elf: vmlinux FORCE $(call if_changed,strip) + +targets += vmlinux.efi +$(obj)/vmlinux.efi: vmlinux FORCE + $(call if_changed,objcopy) + +EFI_ZBOOT_PAYLOAD := vmlinux.efi +EFI_ZBOOT_BFD_TARGET := elf64-loongarch +EFI_ZBOOT_MACH_TYPE := LOONGARCH64 + +include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot diff --git a/arch/loongarch/include/asm/bootinfo.h b/arch/loongarch/include/asm/bootinfo.h index e02ac4af7f6e..8e5881bc5ad1 100644 --- a/arch/loongarch/include/asm/bootinfo.h +++ b/arch/loongarch/include/asm/bootinfo.h @@ -36,7 +36,7 @@ struct loongson_system_configuration { }; extern u64 efi_system_table; -extern unsigned long fw_arg0, fw_arg1; +extern unsigned long fw_arg0, fw_arg1, fw_arg2; extern struct loongson_board_info b_info; extern struct loongson_system_configuration loongson_sysconf; diff --git a/arch/loongarch/include/asm/efi.h b/arch/loongarch/include/asm/efi.h index 9d44c6948be1..174567b00ddb 100644 --- a/arch/loongarch/include/asm/efi.h +++ b/arch/loongarch/include/asm/efi.h @@ -17,9 +17,16 @@ void efifb_setup_from_dmi(struct screen_info *si, const char *opt); #define arch_efi_call_virt_teardown() #define EFI_ALLOC_ALIGN SZ_64K +#define EFI_RT_VIRTUAL_OFFSET CSR_DMW0_BASE -struct screen_info *alloc_screen_info(void); -void free_screen_info(struct screen_info *si); +static inline struct screen_info *alloc_screen_info(void) +{ + return &screen_info; +} + +static inline void free_screen_info(struct screen_info *si) +{ +} static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr) { diff --git a/arch/loongarch/kernel/efi-header.S b/arch/loongarch/kernel/efi-header.S new file mode 100644 index 000000000000..8c1d229a2afa --- /dev/null +++ b/arch/loongarch/kernel/efi-header.S @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ + +#include <linux/pe.h> +#include <linux/sizes.h> + + .macro __EFI_PE_HEADER + .long PE_MAGIC +.Lcoff_header: + .short IMAGE_FILE_MACHINE_LOONGARCH64 /* Machine */ + .short .Lsection_count /* NumberOfSections */ + .long 0 /* TimeDateStamp */ + .long 0 /* PointerToSymbolTable */ + .long 0 /* NumberOfSymbols */ + .short .Lsection_table - .Loptional_header /* SizeOfOptionalHeader */ + .short IMAGE_FILE_DEBUG_STRIPPED | \ + IMAGE_FILE_EXECUTABLE_IMAGE | \ + IMAGE_FILE_LINE_NUMS_STRIPPED /* Characteristics */ + +.Loptional_header: + .short PE_OPT_MAGIC_PE32PLUS /* PE32+ format */ + .byte 0x02 /* MajorLinkerVersion */ + .byte 0x14 /* MinorLinkerVersion */ + .long __inittext_end - .Lefi_header_end /* SizeOfCode */ + .long _end - __initdata_begin /* SizeOfInitializedData */ + .long 0 /* SizeOfUninitializedData */ + .long __efistub_efi_pe_entry - _head /* AddressOfEntryPoint */ + .long .Lefi_header_end - _head /* BaseOfCode */ + +.Lextra_header_fields: + .quad 0 /* ImageBase */ + .long PECOFF_SEGMENT_ALIGN /* SectionAlignment */ + .long PECOFF_FILE_ALIGN /* FileAlignment */ + .short 0 /* MajorOperatingSystemVersion */ + .short 0 /* MinorOperatingSystemVersion */ + .short LINUX_EFISTUB_MAJOR_VERSION /* MajorImageVersion */ + .short LINUX_EFISTUB_MINOR_VERSION /* MinorImageVersion */ + .short 0 /* MajorSubsystemVersion */ + .short 0 /* MinorSubsystemVersion */ + .long 0 /* Win32VersionValue */ + + .long _end - _head /* SizeOfImage */ + + /* Everything before the kernel image is considered part of the header */ + .long .Lefi_header_end - _head /* SizeOfHeaders */ + .long 0 /* CheckSum */ + .short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */ + .short 0 /* DllCharacteristics */ + .quad 0 /* SizeOfStackReserve */ + .quad 0 /* SizeOfStackCommit */ + .quad 0 /* SizeOfHeapReserve */ + .quad 0 /* SizeOfHeapCommit */ + .long 0 /* LoaderFlags */ + .long (.Lsection_table - .) / 8 /* NumberOfRvaAndSizes */ + + .quad 0 /* ExportTable */ + .quad 0 /* ImportTable */ + .quad 0 /* ResourceTable */ + .quad 0 /* ExceptionTable */ + .quad 0 /* CertificationTable */ + .quad 0 /* BaseRelocationTable */ + + /* Section table */ +.Lsection_table: + .ascii ".text\0\0\0" + .long __inittext_end - .Lefi_header_end /* VirtualSize */ + .long .Lefi_header_end - _head /* VirtualAddress */ + .long __inittext_end - .Lefi_header_end /* SizeOfRawData */ + .long .Lefi_header_end - _head /* PointerToRawData */ + + .long 0 /* PointerToRelocations */ + .long 0 /* PointerToLineNumbers */ + .short 0 /* NumberOfRelocations */ + .short 0 /* NumberOfLineNumbers */ + .long IMAGE_SCN_CNT_CODE | \ + IMAGE_SCN_MEM_READ | \ + IMAGE_SCN_MEM_EXECUTE /* Characteristics */ + + .ascii ".data\0\0\0" + .long _end - __initdata_begin /* VirtualSize */ + .long __initdata_begin - _head /* VirtualAddress */ + .long _edata - __initdata_begin /* SizeOfRawData */ + .long __initdata_begin - _head /* PointerToRawData */ + + .long 0 /* PointerToRelocations */ + .long 0 /* PointerToLineNumbers */ + .short 0 /* NumberOfRelocations */ + .short 0 /* NumberOfLineNumbers */ + .long IMAGE_SCN_CNT_INITIALIZED_DATA | \ + IMAGE_SCN_MEM_READ | \ + IMAGE_SCN_MEM_WRITE /* Characteristics */ + + .set .Lsection_count, (. - .Lsection_table) / 40 + + .balign 0x10000 /* PECOFF_SEGMENT_ALIGN */ +.Lefi_header_end: + .endm diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c index a50b60c587fa..a31329971133 100644 --- a/arch/loongarch/kernel/efi.c +++ b/arch/loongarch/kernel/efi.c @@ -27,8 +27,13 @@ static unsigned long efi_nr_tables; static unsigned long efi_config_table; +static unsigned long __initdata boot_memmap = EFI_INVALID_TABLE_ADDR; + static efi_system_table_t *efi_systab; -static efi_config_table_type_t arch_tables[] __initdata = {{},}; +static efi_config_table_type_t arch_tables[] __initdata = { + {LINUX_EFI_BOOT_MEMMAP_GUID, &boot_memmap, "MEMMAP" }, + {}, +}; void __init efi_runtime_init(void) { @@ -51,6 +56,7 @@ void __init efi_init(void) { int size; void *config_tables; + struct efi_boot_memmap *tbl; if (!efi_system_table) return; @@ -61,6 +67,8 @@ void __init efi_init(void) return; } + efi_systab_report_header(&efi_systab->hdr, efi_systab->fw_vendor); + set_bit(EFI_64BIT, &efi.flags); efi_nr_tables = efi_systab->nr_tables; efi_config_table = (unsigned long)efi_systab->tables; @@ -69,4 +77,27 @@ void __init efi_init(void) config_tables = early_memremap(efi_config_table, efi_nr_tables * size); efi_config_parse_tables(config_tables, efi_systab->nr_tables, arch_tables); early_memunmap(config_tables, efi_nr_tables * size); + + set_bit(EFI_CONFIG_TABLES, &efi.flags); + + if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) + memblock_reserve(screen_info.lfb_base, screen_info.lfb_size); + + if (boot_memmap == EFI_INVALID_TABLE_ADDR) + return; + + tbl = early_memremap_ro(boot_memmap, sizeof(*tbl)); + if (tbl) { + struct efi_memory_map_data data; + + data.phys_map = boot_memmap + sizeof(*tbl); + data.size = tbl->map_size; + data.desc_size = tbl->desc_size; + data.desc_version = tbl->desc_ver; + + if (efi_memmap_init_early(&data) < 0) + panic("Unable to map EFI memory map.\n"); + + early_memunmap(tbl, sizeof(*tbl)); + } } diff --git a/arch/loongarch/kernel/env.c b/arch/loongarch/kernel/env.c index 82b478a5c665..6d56a463b091 100644 --- a/arch/loongarch/kernel/env.c +++ b/arch/loongarch/kernel/env.c @@ -8,7 +8,6 @@ #include <linux/efi.h> #include <linux/export.h> #include <linux/memblock.h> -#include <linux/of_fdt.h> #include <asm/early_ioremap.h> #include <asm/bootinfo.h> #include <asm/loongson.h> @@ -20,21 +19,17 @@ EXPORT_SYMBOL(loongson_sysconf); void __init init_environ(void) { int efi_boot = fw_arg0; - struct efi_memory_map_data data; - void *fdt_ptr = early_memremap_ro(fw_arg1, SZ_64K); + char *cmdline = early_memremap_ro(fw_arg1, COMMAND_LINE_SIZE); if (efi_boot) set_bit(EFI_BOOT, &efi.flags); else clear_bit(EFI_BOOT, &efi.flags); - early_init_dt_scan(fdt_ptr); - early_init_fdt_reserve_self(); - efi_system_table = efi_get_fdt_params(&data); + strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE); + early_memunmap(cmdline, COMMAND_LINE_SIZE); - efi_memmap_init_early(&data); - memblock_reserve(data.phys_map & PAGE_MASK, - PAGE_ALIGN(data.size + (data.phys_map & ~PAGE_MASK))); + efi_system_table = fw_arg2; } static int __init init_cpu_fullname(void) diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S index 331864369e49..7e57ae8741b1 100644 --- a/arch/loongarch/kernel/head.S +++ b/arch/loongarch/kernel/head.S @@ -12,6 +12,26 @@ #include <asm/loongarch.h> #include <asm/stackframe.h> +#ifdef CONFIG_EFI_STUB + +#include "efi-header.S" + + __HEAD + +_head: + .word MZ_MAGIC /* "MZ", MS-DOS header */ + .org 0x3c /* 0x04 ~ 0x3b reserved */ + .long pe_header - _head /* Offset to the PE header */ + +pe_header: + __EFI_PE_HEADER + +SYM_DATA(kernel_asize, .long _end - _text); +SYM_DATA(kernel_fsize, .long _edata - _text); +SYM_DATA(kernel_offset, .long kernel_offset - _text); + +#endif + __REF .align 12 @@ -49,6 +69,8 @@ SYM_CODE_START(kernel_entry) # kernel entry point st.d a0, t0, 0 # firmware arguments la t0, fw_arg1 st.d a1, t0, 0 + la t0, fw_arg2 + st.d a2, t0, 0 /* KSave3 used for percpu base, initialized as 0 */ csrwr zero, PERCPU_BASE_KS diff --git a/arch/loongarch/kernel/image-vars.h b/arch/loongarch/kernel/image-vars.h new file mode 100644 index 000000000000..88f5d81702df --- /dev/null +++ b/arch/loongarch/kernel/image-vars.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ +#ifndef __LOONGARCH_KERNEL_IMAGE_VARS_H +#define __LOONGARCH_KERNEL_IMAGE_VARS_H + +#ifdef CONFIG_EFI_STUB + +__efistub_memcmp = memcmp; +__efistub_memchr = memchr; +__efistub_strcat = strcat; +__efistub_strcmp = strcmp; +__efistub_strlen = strlen; +__efistub_strncat = strncat; +__efistub_strnstr = strnstr; +__efistub_strnlen = strnlen; +__efistub_strrchr = strrchr; +__efistub_kernel_entry = kernel_entry; +__efistub_kernel_asize = kernel_asize; +__efistub_kernel_fsize = kernel_fsize; +__efistub_kernel_offset = kernel_offset; +__efistub_screen_info = screen_info; + +#endif + +#endif /* __LOONGARCH_KERNEL_IMAGE_VARS_H */ diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index d97c69dbe553..6ca5a0dcbb1c 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -49,11 +49,9 @@ #define SMBIOS_CORE_PACKAGE_OFFSET 0x23 #define LOONGSON_EFI_ENABLE (1 << 3) -#ifdef CONFIG_VT -struct screen_info screen_info; -#endif +struct screen_info screen_info __section(".data"); -unsigned long fw_arg0, fw_arg1; +unsigned long fw_arg0, fw_arg1, fw_arg2; DEFINE_PER_CPU(unsigned long, kernelsp); struct cpuinfo_loongarch cpu_data[NR_CPUS] __read_mostly; @@ -122,16 +120,9 @@ static void __init parse_cpu_table(const struct dmi_header *dm) static void __init parse_bios_table(const struct dmi_header *dm) { - int bios_extern; char *dmi_data = (char *)dm; - bios_extern = *(dmi_data + SMBIOS_BIOSEXTERN_OFFSET); b_info.bios_size = (*(dmi_data + SMBIOS_BIOSSIZE_OFFSET) + 1) << 6; - - if (bios_extern & LOONGSON_EFI_ENABLE) - set_bit(EFI_BOOT, &efi.flags); - else - clear_bit(EFI_BOOT, &efi.flags); } static void __init find_tokens(const struct dmi_header *dm, void *dummy) @@ -196,7 +187,6 @@ early_param("mem", early_parse_mem); void __init platform_init(void) { - efi_init(); #ifdef CONFIG_ACPI_TABLE_UPGRADE acpi_table_upgrade(); #endif @@ -356,6 +346,7 @@ void __init setup_arch(char **cmdline_p) *cmdline_p = boot_command_line; init_environ(); + efi_init(); memblock_init(); parse_early_param(); diff --git a/arch/loongarch/kernel/vmlinux.lds.S b/arch/loongarch/kernel/vmlinux.lds.S index f4831df5d2f9..e5890bec2bf6 100644 --- a/arch/loongarch/kernel/vmlinux.lds.S +++ b/arch/loongarch/kernel/vmlinux.lds.S @@ -12,6 +12,7 @@ #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir) #include <asm-generic/vmlinux.lds.h> +#include "image-vars.h" /* * Max avaliable Page Size is 64K, so we set SectionAlignment diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 3fa8ef336822..d63295e21373 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -136,10 +136,14 @@ ifneq ($(CONFIG_XIP_KERNEL),y) ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_CANAAN),yy) KBUILD_IMAGE := $(boot)/loader.bin else +ifeq ($(CONFIG_EFI_ZBOOT),) KBUILD_IMAGE := $(boot)/Image.gz +else +KBUILD_IMAGE := $(boot)/vmlinuz.efi +endif endif endif -BOOT_TARGETS := Image Image.gz loader loader.bin xipImage +BOOT_TARGETS := Image Image.gz loader loader.bin xipImage vmlinuz.efi all: $(notdir $(KBUILD_IMAGE)) diff --git a/arch/riscv/boot/.gitignore b/arch/riscv/boot/.gitignore index 0cea9f7fa9d5..e1bc507e8cb2 100644 --- a/arch/riscv/boot/.gitignore +++ b/arch/riscv/boot/.gitignore @@ -4,4 +4,5 @@ Image.* loader loader.lds loader.bin +vmlinuz* xipImage diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile index becd0621071c..d1a49adcb1d7 100644 --- a/arch/riscv/boot/Makefile +++ b/arch/riscv/boot/Makefile @@ -58,3 +58,9 @@ $(obj)/Image.lzo: $(obj)/Image FORCE $(obj)/loader.bin: $(obj)/loader FORCE $(call if_changed,objcopy) + +EFI_ZBOOT_PAYLOAD := Image +EFI_ZBOOT_BFD_TARGET := elf$(BITS)-littleriscv +EFI_ZBOOT_MACH_TYPE := RISCV$(BITS) + +include $(srctree)/drivers/firmware/efi/libstub/Makefile.zboot diff --git a/arch/riscv/kernel/image-vars.h b/arch/riscv/kernel/image-vars.h index 71a76a623257..d6e5f739905e 100644 --- a/arch/riscv/kernel/image-vars.h +++ b/arch/riscv/kernel/image-vars.h @@ -25,21 +25,12 @@ */ __efistub_memcmp = memcmp; __efistub_memchr = memchr; -__efistub_memcpy = memcpy; -__efistub_memmove = memmove; -__efistub_memset = memset; __efistub_strlen = strlen; __efistub_strnlen = strnlen; __efistub_strcmp = strcmp; __efistub_strncmp = strncmp; __efistub_strrchr = strrchr; -#ifdef CONFIG_KASAN -__efistub___memcpy = memcpy; -__efistub___memmove = memmove; -__efistub___memset = memset; -#endif - __efistub__start = _start; __efistub__start_kernel = _start_kernel; __efistub__end = _end; diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 1f3675453a57..b36596bf0fc3 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -176,7 +176,8 @@ virt_to_phys_or_null_size(void *va, unsigned long size) int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) { - unsigned long pfn, text, pf, rodata; + extern const u8 __efi64_thunk_ret_tramp[]; + unsigned long pfn, text, pf, rodata, tramp; struct page *page; unsigned npages; pgd_t *pgd = efi_mm.pgd; @@ -238,11 +239,9 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) npages = (_etext - _text) >> PAGE_SHIFT; text = __pa(_text); - pfn = text >> PAGE_SHIFT; - pf = _PAGE_ENC; - if (kernel_map_pages_in_pgd(pgd, pfn, text, npages, pf)) { - pr_err("Failed to map kernel text 1:1\n"); + if (kernel_unmap_pages_in_pgd(pgd, text, npages)) { + pr_err("Failed to unmap kernel text 1:1 mapping\n"); return 1; } @@ -256,6 +255,15 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) return 1; } + tramp = __pa(__efi64_thunk_ret_tramp); + pfn = tramp >> PAGE_SHIFT; + + pf = _PAGE_ENC; + if (kernel_map_pages_in_pgd(pgd, pfn, tramp, 1, pf)) { + pr_err("Failed to map mixed mode return trampoline\n"); + return 1; + } + return 0; } diff --git a/arch/x86/platform/efi/efi_thunk_64.S b/arch/x86/platform/efi/efi_thunk_64.S index 4e5257a4811b..c4b1144f99f6 100644 --- a/arch/x86/platform/efi/efi_thunk_64.S +++ b/arch/x86/platform/efi/efi_thunk_64.S @@ -23,7 +23,6 @@ #include <linux/objtool.h> #include <asm/page_types.h> #include <asm/segment.h> -#include <asm/nospec-branch.h> .text .code64 @@ -73,10 +72,18 @@ STACK_FRAME_NON_STANDARD __efi64_thunk pushq %rdi /* EFI runtime service address */ lretq + // This return instruction is not needed for correctness, as it will + // never be reached. It only exists to make objtool happy, which will + // otherwise complain about unreachable instructions in the callers. + RET +SYM_FUNC_END(__efi64_thunk) + + .section ".rodata", "a", @progbits + .balign 16 +SYM_DATA_START(__efi64_thunk_ret_tramp) 1: movq 0x20(%rsp), %rsp pop %rbx pop %rbp - ANNOTATE_UNRET_SAFE ret int3 @@ -84,7 +91,7 @@ STACK_FRAME_NON_STANDARD __efi64_thunk 2: pushl $__KERNEL_CS pushl %ebp lret -SYM_FUNC_END(__efi64_thunk) +SYM_DATA_END(__efi64_thunk_ret_tramp) .bss .balign 8 |