forked from luck/tmp_suning_uos_patched
- Fix build regression on v4.8 and older
- Robustness fix for TPM log parsing code - kobject refcount fix for the ESRT parsing code - Two efivarfs fixes to make it behave more like an ordinary file system - Style fixup for zero length arrays - Fix a regression in path separator handling in the initrd loader - Fix a missing prototype warning - Add some kerneldoc headers for newly introduced stub routines - Allow support for SSDT overrides via EFI variables to be disabled - Report CPU mode and MMU state upon entry for 32-bit ARM - Use the correct stack pointer alignment when entering from mixed mode Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl74344RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1heMw//b9UPgWlkH2xnAjo9QeFvounyT8XrLLnW QkhkiIGDvM2qWUmRotRrxRq39P9A+AH4x0krWTZam67W1OuWleUjwQWrnYE8vhql xdIAJmD1oWTi07p4SFzLVA7mJvMX5xenCYvGTALoHtsGnLbOiRGSSTnuXZr1c6Kd 2XcY89kpcZGXgw9VCNV2Ez1g0OlCHS1N5LV31WGUcFl30Q3aZpdLmnFUzKLUbRgb sTNMlu2mLGSs/ZaTAaOGNzFkxGVJI2+0C+ApKvmR9WR7+5n9Brs27RSLgPMViXun BnsTewMdxNBXITgLxcUEtngPEWIzqrwJVbLaZVeWcWez0g11GIt0+wonpRnxWjHA XgQm00sK4HIvs+3YWUJ1PpXyjUmiPvOKZM5um9zsCiYml+RzzIm6bznII4Lh7rQe 4kOLXkxaww+LS4r3+si6Q16og4zd/zZs4MoxaF7frTJ6oiUWOpBJqdf92Kiz0DaS kfQ2I3d/PdZvWuNIiBCfX9bjd7q0zq0zyIghP7460lx88aaHb20samTtl+qjN4MM Wpik/soeYi5pICDRRwiAHhpgK+li4LLjP3D81rYX8pEaAiubpjCwqLxIexQ6XJCV UZAR4swswrYntdXfUMmRnPBsLWWLePq6sRAvlent2si2cp+65f8I1xZ0ClK7YMjr qXUW7jOp/88= =F0bv -----END PGP SIGNATURE----- Merge tag 'efi-urgent-2020-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull EFI fixes from Ingo Molnar: - Fix build regression on v4.8 and older - Robustness fix for TPM log parsing code - kobject refcount fix for the ESRT parsing code - Two efivarfs fixes to make it behave more like an ordinary file system - Style fixup for zero length arrays - Fix a regression in path separator handling in the initrd loader - Fix a missing prototype warning - Add some kerneldoc headers for newly introduced stub routines - Allow support for SSDT overrides via EFI variables to be disabled - Report CPU mode and MMU state upon entry for 32-bit ARM - Use the correct stack pointer alignment when entering from mixed mode * tag 'efi-urgent-2020-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/libstub: arm: Print CPU boot mode and MMU state at boot efi/libstub: arm: Omit arch specific config table matching array on arm64 efi/x86: Setup stack correctly for efi_pe_entry efi: Make it possible to disable efivar_ssdt entirely efi/libstub: Descriptions for stub helper functions efi/libstub: Fix path separator regression efi/libstub: Fix missing-prototype warning for skip_spaces() efi: Replace zero-length array and use struct_size() helper efivarfs: Don't return -EINTR when rate-limiting reads efivarfs: Update inode modification time for successful writes efi/esrt: Fix reference count leak in esre_create_sysfs_entry. efi/tpm: Verify event log header before parsing efi/x86: Fix build with gcc 4
This commit is contained in:
Linus Torvalds
commit
bc53f67d24
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@ -87,4 +87,11 @@ static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
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return dram_base + SZ_512M;
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}
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struct efi_arm_entry_state {
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u32 cpsr_before_ebs;
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u32 sctlr_before_ebs;
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u32 cpsr_after_ebs;
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u32 sctlr_after_ebs;
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};
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#endif /* _ASM_ARM_EFI_H */
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@ -213,7 +213,6 @@ SYM_FUNC_START(startup_32)
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* We place all of the values on our mini stack so lret can
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* used to perform that far jump.
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*/
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pushl $__KERNEL_CS
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leal startup_64(%ebp), %eax
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#ifdef CONFIG_EFI_MIXED
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movl efi32_boot_args(%ebp), %edi
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@ -224,11 +223,20 @@ SYM_FUNC_START(startup_32)
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movl efi32_boot_args+8(%ebp), %edx // saved bootparams pointer
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cmpl $0, %edx
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jnz 1f
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/*
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* efi_pe_entry uses MS calling convention, which requires 32 bytes of
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* shadow space on the stack even if all arguments are passed in
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* registers. We also need an additional 8 bytes for the space that
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* would be occupied by the return address, and this also results in
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* the correct stack alignment for entry.
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*/
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subl $40, %esp
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leal efi_pe_entry(%ebp), %eax
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movl %edi, %ecx // MS calling convention
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movl %esi, %edx
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1:
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#endif
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pushl $__KERNEL_CS
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pushl %eax
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/* Enter paged protected Mode, activating Long Mode */
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@ -784,6 +792,7 @@ SYM_DATA_LOCAL(boot_heap, .fill BOOT_HEAP_SIZE, 1, 0)
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SYM_DATA_START_LOCAL(boot_stack)
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.fill BOOT_STACK_SIZE, 1, 0
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.balign 16
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SYM_DATA_END_LABEL(boot_stack, SYM_L_LOCAL, boot_stack_end)
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/*
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@ -278,3 +278,14 @@ config EFI_EARLYCON
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depends on SERIAL_EARLYCON && !ARM && !IA64
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select FONT_SUPPORT
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select ARCH_USE_MEMREMAP_PROT
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config EFI_CUSTOM_SSDT_OVERLAYS
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bool "Load custom ACPI SSDT overlay from an EFI variable"
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depends on EFI_VARS && ACPI
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default ACPI_TABLE_UPGRADE
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help
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Allow loading of an ACPI SSDT overlay from an EFI variable specified
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by a kernel command line option.
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See Documentation/admin-guide/acpi/ssdt-overlays.rst for more
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information.
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|
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@ -52,9 +52,11 @@ static phys_addr_t __init efi_to_phys(unsigned long addr)
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}
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static __initdata unsigned long screen_info_table = EFI_INVALID_TABLE_ADDR;
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static __initdata unsigned long cpu_state_table = EFI_INVALID_TABLE_ADDR;
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static const efi_config_table_type_t arch_tables[] __initconst = {
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{LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID, &screen_info_table},
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{LINUX_EFI_ARM_CPU_STATE_TABLE_GUID, &cpu_state_table},
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{}
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};
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@ -62,7 +64,8 @@ static void __init init_screen_info(void)
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{
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struct screen_info *si;
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if (screen_info_table != EFI_INVALID_TABLE_ADDR) {
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if (IS_ENABLED(CONFIG_ARM) &&
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screen_info_table != EFI_INVALID_TABLE_ADDR) {
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si = early_memremap_ro(screen_info_table, sizeof(*si));
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if (!si) {
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pr_err("Could not map screen_info config table\n");
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@ -116,7 +119,8 @@ static int __init uefi_init(u64 efi_system_table)
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goto out;
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}
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retval = efi_config_parse_tables(config_tables, systab->nr_tables,
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arch_tables);
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IS_ENABLED(CONFIG_ARM) ? arch_tables
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: NULL);
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early_memunmap(config_tables, table_size);
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out:
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@ -238,9 +242,37 @@ void __init efi_init(void)
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init_screen_info();
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#ifdef CONFIG_ARM
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/* ARM does not permit early mappings to persist across paging_init() */
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if (IS_ENABLED(CONFIG_ARM))
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efi_memmap_unmap();
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efi_memmap_unmap();
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if (cpu_state_table != EFI_INVALID_TABLE_ADDR) {
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struct efi_arm_entry_state *state;
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bool dump_state = true;
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state = early_memremap_ro(cpu_state_table,
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sizeof(struct efi_arm_entry_state));
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if (state == NULL) {
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pr_warn("Unable to map CPU entry state table.\n");
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return;
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}
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if ((state->sctlr_before_ebs & 1) == 0)
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pr_warn(FW_BUG "EFI stub was entered with MMU and Dcache disabled, please fix your firmware!\n");
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else if ((state->sctlr_after_ebs & 1) == 0)
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pr_warn(FW_BUG "ExitBootServices() returned with MMU and Dcache disabled, please fix your firmware!\n");
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else
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dump_state = false;
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if (dump_state || efi_enabled(EFI_DBG)) {
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pr_info("CPSR at EFI stub entry : 0x%08x\n", state->cpsr_before_ebs);
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pr_info("SCTLR at EFI stub entry : 0x%08x\n", state->sctlr_before_ebs);
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pr_info("CPSR after ExitBootServices() : 0x%08x\n", state->cpsr_after_ebs);
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pr_info("SCTLR after ExitBootServices(): 0x%08x\n", state->sctlr_after_ebs);
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}
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early_memunmap(state, sizeof(struct efi_arm_entry_state));
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}
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#endif
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}
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static bool efifb_overlaps_pci_range(const struct of_pci_range *range)
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|
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|
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@ -189,7 +189,7 @@ static void generic_ops_unregister(void)
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efivars_unregister(&generic_efivars);
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}
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#if IS_ENABLED(CONFIG_ACPI)
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#ifdef CONFIG_EFI_CUSTOM_SSDT_OVERLAYS
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#define EFIVAR_SSDT_NAME_MAX 16
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static char efivar_ssdt[EFIVAR_SSDT_NAME_MAX] __initdata;
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static int __init efivar_ssdt_setup(char *str)
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@ -622,7 +622,8 @@ int __init efi_config_parse_tables(const efi_config_table_t *config_tables,
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rsv = (void *)(p + prsv % PAGE_SIZE);
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/* reserve the entry itself */
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memblock_reserve(prsv, EFI_MEMRESERVE_SIZE(rsv->size));
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memblock_reserve(prsv,
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struct_size(rsv, entry, rsv->size));
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for (i = 0; i < atomic_read(&rsv->count); i++) {
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memblock_reserve(rsv->entry[i].base,
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|
|
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|
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@ -181,7 +181,7 @@ static int esre_create_sysfs_entry(void *esre, int entry_num)
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rc = kobject_init_and_add(&entry->kobj, &esre1_ktype, NULL,
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"entry%d", entry_num);
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if (rc) {
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kfree(entry);
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kobject_put(&entry->kobj);
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return rc;
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}
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}
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|
|
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|
|
@ -6,7 +6,8 @@
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# enabled, even if doing so doesn't break the build.
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#
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cflags-$(CONFIG_X86_32) := -march=i386
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cflags-$(CONFIG_X86_64) := -mcmodel=small
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cflags-$(CONFIG_X86_64) := -mcmodel=small \
|
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$(call cc-option,-maccumulate-outgoing-args)
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cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ \
|
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-fPIC -fno-strict-aliasing -mno-red-zone \
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||||
-mno-mmx -mno-sse -fshort-wchar \
|
||||
|
|
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|||
|
|
@ -7,10 +7,49 @@
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|||
|
||||
#include "efistub.h"
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||||
|
||||
static efi_guid_t cpu_state_guid = LINUX_EFI_ARM_CPU_STATE_TABLE_GUID;
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|
||||
struct efi_arm_entry_state *efi_entry_state;
|
||||
|
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static void get_cpu_state(u32 *cpsr, u32 *sctlr)
|
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{
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asm("mrs %0, cpsr" : "=r"(*cpsr));
|
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if ((*cpsr & MODE_MASK) == HYP_MODE)
|
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asm("mrc p15, 4, %0, c1, c0, 0" : "=r"(*sctlr));
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else
|
||||
asm("mrc p15, 0, %0, c1, c0, 0" : "=r"(*sctlr));
|
||||
}
|
||||
|
||||
efi_status_t check_platform_features(void)
|
||||
{
|
||||
efi_status_t status;
|
||||
u32 cpsr, sctlr;
|
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int block;
|
||||
|
||||
get_cpu_state(&cpsr, &sctlr);
|
||||
|
||||
efi_info("Entering in %s mode with MMU %sabled\n",
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||||
((cpsr & MODE_MASK) == HYP_MODE) ? "HYP" : "SVC",
|
||||
(sctlr & 1) ? "en" : "dis");
|
||||
|
||||
status = efi_bs_call(allocate_pool, EFI_LOADER_DATA,
|
||||
sizeof(*efi_entry_state),
|
||||
(void **)&efi_entry_state);
|
||||
if (status != EFI_SUCCESS) {
|
||||
efi_err("allocate_pool() failed\n");
|
||||
return status;
|
||||
}
|
||||
|
||||
efi_entry_state->cpsr_before_ebs = cpsr;
|
||||
efi_entry_state->sctlr_before_ebs = sctlr;
|
||||
|
||||
status = efi_bs_call(install_configuration_table, &cpu_state_guid,
|
||||
efi_entry_state);
|
||||
if (status != EFI_SUCCESS) {
|
||||
efi_err("install_configuration_table() failed\n");
|
||||
goto free_state;
|
||||
}
|
||||
|
||||
/* non-LPAE kernels can run anywhere */
|
||||
if (!IS_ENABLED(CONFIG_ARM_LPAE))
|
||||
return EFI_SUCCESS;
|
||||
|
|
@ -19,9 +58,22 @@ efi_status_t check_platform_features(void)
|
|||
block = cpuid_feature_extract(CPUID_EXT_MMFR0, 0);
|
||||
if (block < 5) {
|
||||
efi_err("This LPAE kernel is not supported by your CPU\n");
|
||||
return EFI_UNSUPPORTED;
|
||||
status = EFI_UNSUPPORTED;
|
||||
goto drop_table;
|
||||
}
|
||||
return EFI_SUCCESS;
|
||||
|
||||
drop_table:
|
||||
efi_bs_call(install_configuration_table, &cpu_state_guid, NULL);
|
||||
free_state:
|
||||
efi_bs_call(free_pool, efi_entry_state);
|
||||
return status;
|
||||
}
|
||||
|
||||
void efi_handle_post_ebs_state(void)
|
||||
{
|
||||
get_cpu_state(&efi_entry_state->cpsr_after_ebs,
|
||||
&efi_entry_state->sctlr_after_ebs);
|
||||
}
|
||||
|
||||
static efi_guid_t screen_info_guid = LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID;
|
||||
|
|
|
|||
|
|
@ -32,6 +32,10 @@ bool __pure __efi_soft_reserve_enabled(void)
|
|||
return !efi_nosoftreserve;
|
||||
}
|
||||
|
||||
/**
|
||||
* efi_char16_puts() - Write a UCS-2 encoded string to the console
|
||||
* @str: UCS-2 encoded string
|
||||
*/
|
||||
void efi_char16_puts(efi_char16_t *str)
|
||||
{
|
||||
efi_call_proto(efi_table_attr(efi_system_table, con_out),
|
||||
|
|
@ -83,6 +87,10 @@ u32 utf8_to_utf32(const u8 **s8)
|
|||
return c32;
|
||||
}
|
||||
|
||||
/**
|
||||
* efi_puts() - Write a UTF-8 encoded string to the console
|
||||
* @str: UTF-8 encoded string
|
||||
*/
|
||||
void efi_puts(const char *str)
|
||||
{
|
||||
efi_char16_t buf[128];
|
||||
|
|
@ -113,6 +121,16 @@ void efi_puts(const char *str)
|
|||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* efi_printk() - Print a kernel message
|
||||
* @fmt: format string
|
||||
*
|
||||
* The first letter of the format string is used to determine the logging level
|
||||
* of the message. If the level is less then the current EFI logging level, the
|
||||
* message is suppressed. The message will be truncated to 255 bytes.
|
||||
*
|
||||
* Return: number of printed characters
|
||||
*/
|
||||
int efi_printk(const char *fmt, ...)
|
||||
{
|
||||
char printf_buf[256];
|
||||
|
|
@ -154,13 +172,18 @@ int efi_printk(const char *fmt, ...)
|
|||
return printed;
|
||||
}
|
||||
|
||||
/*
|
||||
* Parse the ASCII string 'cmdline' for EFI options, denoted by the efi=
|
||||
/**
|
||||
* efi_parse_options() - Parse EFI command line options
|
||||
* @cmdline: kernel command line
|
||||
*
|
||||
* Parse the ASCII string @cmdline for EFI options, denoted by the efi=
|
||||
* option, e.g. efi=nochunk.
|
||||
*
|
||||
* It should be noted that efi= is parsed in two very different
|
||||
* environments, first in the early boot environment of the EFI boot
|
||||
* stub, and subsequently during the kernel boot.
|
||||
*
|
||||
* Return: status code
|
||||
*/
|
||||
efi_status_t efi_parse_options(char const *cmdline)
|
||||
{
|
||||
|
|
@ -286,13 +309,21 @@ char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len)
|
|||
return (char *)cmdline_addr;
|
||||
}
|
||||
|
||||
/*
|
||||
/**
|
||||
* efi_exit_boot_services() - Exit boot services
|
||||
* @handle: handle of the exiting image
|
||||
* @map: pointer to receive the memory map
|
||||
* @priv: argument to be passed to @priv_func
|
||||
* @priv_func: function to process the memory map before exiting boot services
|
||||
*
|
||||
* Handle calling ExitBootServices according to the requirements set out by the
|
||||
* spec. Obtains the current memory map, and returns that info after calling
|
||||
* ExitBootServices. The client must specify a function to perform any
|
||||
* processing of the memory map data prior to ExitBootServices. A client
|
||||
* specific structure may be passed to the function via priv. The client
|
||||
* function may be called multiple times.
|
||||
*
|
||||
* Return: status code
|
||||
*/
|
||||
efi_status_t efi_exit_boot_services(void *handle,
|
||||
struct efi_boot_memmap *map,
|
||||
|
|
@ -361,6 +392,11 @@ efi_status_t efi_exit_boot_services(void *handle,
|
|||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* get_efi_config_table() - retrieve UEFI configuration table
|
||||
* @guid: GUID of the configuration table to be retrieved
|
||||
* Return: pointer to the configuration table or NULL
|
||||
*/
|
||||
void *get_efi_config_table(efi_guid_t guid)
|
||||
{
|
||||
unsigned long tables = efi_table_attr(efi_system_table, tables);
|
||||
|
|
@ -408,17 +444,18 @@ static const struct {
|
|||
};
|
||||
|
||||
/**
|
||||
* efi_load_initrd_dev_path - load the initrd from the Linux initrd device path
|
||||
* efi_load_initrd_dev_path() - load the initrd from the Linux initrd device path
|
||||
* @load_addr: pointer to store the address where the initrd was loaded
|
||||
* @load_size: pointer to store the size of the loaded initrd
|
||||
* @max: upper limit for the initrd memory allocation
|
||||
* @return: %EFI_SUCCESS if the initrd was loaded successfully, in which
|
||||
* case @load_addr and @load_size are assigned accordingly
|
||||
* %EFI_NOT_FOUND if no LoadFile2 protocol exists on the initrd
|
||||
* device path
|
||||
* %EFI_INVALID_PARAMETER if load_addr == NULL or load_size == NULL
|
||||
* %EFI_OUT_OF_RESOURCES if memory allocation failed
|
||||
* %EFI_LOAD_ERROR in all other cases
|
||||
*
|
||||
* Return:
|
||||
* * %EFI_SUCCESS if the initrd was loaded successfully, in which
|
||||
* case @load_addr and @load_size are assigned accordingly
|
||||
* * %EFI_NOT_FOUND if no LoadFile2 protocol exists on the initrd device path
|
||||
* * %EFI_INVALID_PARAMETER if load_addr == NULL or load_size == NULL
|
||||
* * %EFI_OUT_OF_RESOURCES if memory allocation failed
|
||||
* * %EFI_LOAD_ERROR in all other cases
|
||||
*/
|
||||
static
|
||||
efi_status_t efi_load_initrd_dev_path(unsigned long *load_addr,
|
||||
|
|
@ -481,6 +518,16 @@ efi_status_t efi_load_initrd_cmdline(efi_loaded_image_t *image,
|
|||
load_addr, load_size);
|
||||
}
|
||||
|
||||
/**
|
||||
* efi_load_initrd() - Load initial RAM disk
|
||||
* @image: EFI loaded image protocol
|
||||
* @load_addr: pointer to loaded initrd
|
||||
* @load_size: size of loaded initrd
|
||||
* @soft_limit: preferred size of allocated memory for loading the initrd
|
||||
* @hard_limit: minimum size of allocated memory
|
||||
*
|
||||
* Return: status code
|
||||
*/
|
||||
efi_status_t efi_load_initrd(efi_loaded_image_t *image,
|
||||
unsigned long *load_addr,
|
||||
unsigned long *load_size,
|
||||
|
|
@ -505,6 +552,15 @@ efi_status_t efi_load_initrd(efi_loaded_image_t *image,
|
|||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* efi_wait_for_key() - Wait for key stroke
|
||||
* @usec: number of microseconds to wait for key stroke
|
||||
* @key: key entered
|
||||
*
|
||||
* Wait for up to @usec microseconds for a key stroke.
|
||||
*
|
||||
* Return: status code, EFI_SUCCESS if key received
|
||||
*/
|
||||
efi_status_t efi_wait_for_key(unsigned long usec, efi_input_key_t *key)
|
||||
{
|
||||
efi_event_t events[2], timer;
|
||||
|
|
|
|||
|
|
@ -329,6 +329,9 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
|
|||
if (status != EFI_SUCCESS)
|
||||
goto fail_free_initrd;
|
||||
|
||||
if (IS_ENABLED(CONFIG_ARM))
|
||||
efi_handle_post_ebs_state();
|
||||
|
||||
efi_enter_kernel(image_addr, fdt_addr, fdt_totalsize((void *)fdt_addr));
|
||||
/* not reached */
|
||||
|
||||
|
|
|
|||
|
|
@ -157,8 +157,14 @@ typedef void (__efiapi *efi_event_notify_t)(efi_event_t, void *);
|
|||
#define EFI_EVT_NOTIFY_WAIT 0x00000100U
|
||||
#define EFI_EVT_NOTIFY_SIGNAL 0x00000200U
|
||||
|
||||
/*
|
||||
* boottime->wait_for_event takes an array of events as input.
|
||||
/**
|
||||
* efi_set_event_at() - add event to events array
|
||||
*
|
||||
* @events: array of UEFI events
|
||||
* @ids: index where to put the event in the array
|
||||
* @event: event to add to the aray
|
||||
*
|
||||
* boottime->wait_for_event() takes an array of events as input.
|
||||
* Provide a helper to set it up correctly for mixed mode.
|
||||
*/
|
||||
static inline
|
||||
|
|
@ -771,4 +777,6 @@ efi_status_t efi_load_initrd(efi_loaded_image_t *image,
|
|||
unsigned long soft_limit,
|
||||
unsigned long hard_limit);
|
||||
|
||||
void efi_handle_post_ebs_state(void);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -102,12 +102,20 @@ static int find_file_option(const efi_char16_t *cmdline, int cmdline_len,
|
|||
if (!found)
|
||||
return 0;
|
||||
|
||||
/* Skip any leading slashes */
|
||||
while (cmdline[i] == L'/' || cmdline[i] == L'\\')
|
||||
i++;
|
||||
|
||||
while (--result_len > 0 && i < cmdline_len) {
|
||||
if (cmdline[i] == L'\0' ||
|
||||
cmdline[i] == L'\n' ||
|
||||
cmdline[i] == L' ')
|
||||
efi_char16_t c = cmdline[i++];
|
||||
|
||||
if (c == L'\0' || c == L'\n' || c == L' ')
|
||||
break;
|
||||
*result++ = cmdline[i++];
|
||||
else if (c == L'/')
|
||||
/* Replace UNIX dir separators with EFI standard ones */
|
||||
*result++ = L'\\';
|
||||
else
|
||||
*result++ = c;
|
||||
}
|
||||
*result = L'\0';
|
||||
return i;
|
||||
|
|
|
|||
|
|
@ -1,6 +1,7 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
#include <linux/ctype.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
char *skip_spaces(const char *str)
|
||||
|
|
|
|||
|
|
@ -51,6 +51,7 @@ static ssize_t efivarfs_file_write(struct file *file,
|
|||
} else {
|
||||
inode_lock(inode);
|
||||
i_size_write(inode, datasize + sizeof(attributes));
|
||||
inode->i_mtime = current_time(inode);
|
||||
inode_unlock(inode);
|
||||
}
|
||||
|
||||
|
|
@ -72,10 +73,8 @@ static ssize_t efivarfs_file_read(struct file *file, char __user *userbuf,
|
|||
ssize_t size = 0;
|
||||
int err;
|
||||
|
||||
while (!__ratelimit(&file->f_cred->user->ratelimit)) {
|
||||
if (!msleep_interruptible(50))
|
||||
return -EINTR;
|
||||
}
|
||||
while (!__ratelimit(&file->f_cred->user->ratelimit))
|
||||
msleep(50);
|
||||
|
||||
err = efivar_entry_size(var, &datasize);
|
||||
|
||||
|
|
|
|||
|
|
@ -350,6 +350,7 @@ void efi_native_runtime_setup(void);
|
|||
* associated with ConOut
|
||||
*/
|
||||
#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
|
||||
#define LINUX_EFI_ARM_CPU_STATE_TABLE_GUID EFI_GUID(0xef79e4aa, 0x3c3d, 0x4989, 0xb9, 0x02, 0x07, 0xa9, 0x43, 0xe5, 0x50, 0xd2)
|
||||
#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
|
||||
#define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
|
||||
#define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa)
|
||||
|
|
@ -1236,14 +1237,11 @@ struct linux_efi_memreserve {
|
|||
struct {
|
||||
phys_addr_t base;
|
||||
phys_addr_t size;
|
||||
} entry[0];
|
||||
} entry[];
|
||||
};
|
||||
|
||||
#define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \
|
||||
(count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0]))
|
||||
|
||||
#define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \
|
||||
/ sizeof(((struct linux_efi_memreserve *)0)->entry[0]))
|
||||
/ sizeof_field(struct linux_efi_memreserve, entry[0]))
|
||||
|
||||
void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size);
|
||||
|
||||
|
|
|
|||
|
|
@ -81,6 +81,8 @@ struct tcg_efi_specid_event_algs {
|
|||
u16 digest_size;
|
||||
} __packed;
|
||||
|
||||
#define TCG_SPECID_SIG "Spec ID Event03"
|
||||
|
||||
struct tcg_efi_specid_event_head {
|
||||
u8 signature[16];
|
||||
u32 platform_class;
|
||||
|
|
@ -171,6 +173,7 @@ static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
|
|||
int i;
|
||||
int j;
|
||||
u32 count, event_type;
|
||||
const u8 zero_digest[sizeof(event_header->digest)] = {0};
|
||||
|
||||
marker = event;
|
||||
marker_start = marker;
|
||||
|
|
@ -198,10 +201,19 @@ static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
|
|||
count = READ_ONCE(event->count);
|
||||
event_type = READ_ONCE(event->event_type);
|
||||
|
||||
/* Verify that it's the log header */
|
||||
if (event_header->pcr_idx != 0 ||
|
||||
event_header->event_type != NO_ACTION ||
|
||||
memcmp(event_header->digest, zero_digest, sizeof(zero_digest))) {
|
||||
size = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
efispecid = (struct tcg_efi_specid_event_head *)event_header->event;
|
||||
|
||||
/* Check if event is malformed. */
|
||||
if (count > efispecid->num_algs) {
|
||||
if (memcmp(efispecid->signature, TCG_SPECID_SIG,
|
||||
sizeof(TCG_SPECID_SIG)) || count > efispecid->num_algs) {
|
||||
size = 0;
|
||||
goto out;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user