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author | Masahisa Kojima <masahisa.kojima@linaro.org> | 2021-05-14 03:53:36 +0300 |
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committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-05-25 14:06:57 +0300 |
commit | f6081a8a1e45e4864e36d83ccc236eef62478b1f (patch) | |
tree | 3a8ebc1a543f78b0beedfc4a0ce3df5a742daadf /lib/efi_loader/efi_image_loader.c | |
parent | 6754e24b54da3229c37ae50526df0e79ba6e67fa (diff) | |
download | u-boot-f6081a8a1e45e4864e36d83ccc236eef62478b1f.tar.xz |
efi_loader: expose efi_image_parse() even if UEFI Secure Boot is disabled
This is preparation for PE/COFF measurement support.
PE/COFF image hash calculation is same in both
UEFI Secure Boot image verification and measurement in
measured boot. PE/COFF image parsing functions are
gathered into efi_image_loader.c, and exposed even if
UEFI Secure Boot is not enabled.
This commit also adds the EFI_SIGNATURE_SUPPORT option
to decide if efi_signature.c shall be compiled.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib/efi_loader/efi_image_loader.c')
-rw-r--r-- | lib/efi_loader/efi_image_loader.c | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c index f53ef367ec..fe1ee198e2 100644 --- a/lib/efi_loader/efi_image_loader.c +++ b/lib/efi_loader/efi_image_loader.c @@ -213,7 +213,68 @@ static void efi_set_code_and_data_type( } } -#ifdef CONFIG_EFI_SECURE_BOOT +/** + * efi_image_region_add() - add an entry of region + * @regs: Pointer to array of regions + * @start: Start address of region (included) + * @end: End address of region (excluded) + * @nocheck: flag against overlapped regions + * + * Take one entry of region [@start, @end[ and insert it into the list. + * + * * If @nocheck is false, the list will be sorted ascending by address. + * Overlapping entries will not be allowed. + * + * * If @nocheck is true, the list will be sorted ascending by sequence + * of adding the entries. Overlapping is allowed. + * + * Return: status code + */ +efi_status_t efi_image_region_add(struct efi_image_regions *regs, + const void *start, const void *end, + int nocheck) +{ + struct image_region *reg; + int i, j; + + if (regs->num >= regs->max) { + EFI_PRINT("%s: no more room for regions\n", __func__); + return EFI_OUT_OF_RESOURCES; + } + + if (end < start) + return EFI_INVALID_PARAMETER; + + for (i = 0; i < regs->num; i++) { + reg = ®s->reg[i]; + if (nocheck) + continue; + + /* new data after registered region */ + if (start >= reg->data + reg->size) + continue; + + /* new data preceding registered region */ + if (end <= reg->data) { + for (j = regs->num - 1; j >= i; j--) + memcpy(®s->reg[j + 1], ®s->reg[j], + sizeof(*reg)); + break; + } + + /* new data overlapping registered region */ + EFI_PRINT("%s: new region already part of another\n", __func__); + return EFI_INVALID_PARAMETER; + } + + reg = ®s->reg[i]; + reg->data = start; + reg->size = end - start; + regs->num++; + + return EFI_SUCCESS; +} + /** * cmp_pe_section() - compare virtual addresses of two PE image sections * @arg1: pointer to pointer to first section header @@ -422,6 +483,7 @@ err: return false; } +#ifdef CONFIG_EFI_SECURE_BOOT /** * efi_image_unsigned_authenticate() - authenticate unsigned image with * SHA256 hash |