aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMasahisa Kojima <masahisa.kojima@linaro.org>2021-05-14 09:53:36 +0900
committerHeinrich Schuchardt <xypron.glpk@gmx.de>2021-05-25 13:06:57 +0200
commitf6081a8a1e45e4864e36d83ccc236eef62478b1f (patch)
tree3a8ebc1a543f78b0beedfc4a0ce3df5a742daadf
parent6754e24b54da3229c37ae50526df0e79ba6e67fa (diff)
downloadu-boot-f6081a8a1e45e4864e36d83ccc236eef62478b1f.zip
u-boot-f6081a8a1e45e4864e36d83ccc236eef62478b1f.tar.gz
u-boot-f6081a8a1e45e4864e36d83ccc236eef62478b1f.tar.bz2
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>
-rw-r--r--lib/efi_loader/Kconfig5
-rw-r--r--lib/efi_loader/Makefile2
-rw-r--r--lib/efi_loader/efi_image_loader.c64
-rw-r--r--lib/efi_loader/efi_signature.c67
-rw-r--r--lib/efi_loader/efi_var_common.c3
5 files changed, 73 insertions, 68 deletions
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index eb5c4d6..98845b8 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -175,6 +175,7 @@ config EFI_CAPSULE_AUTHENTICATE
select PKCS7_VERIFY
select IMAGE_SIGN_INFO
select HASH_CALCULATE
+ select EFI_SIGNATURE_SUPPORT
default n
help
Select this option if you want to enable capsule
@@ -344,6 +345,7 @@ config EFI_SECURE_BOOT
select PKCS7_MESSAGE_PARSER
select PKCS7_VERIFY
select HASH_CALCULATE
+ select EFI_SIGNATURE_SUPPORT
default n
help
Select this option to enable EFI secure boot support.
@@ -351,6 +353,9 @@ config EFI_SECURE_BOOT
it is signed with a trusted key. To do that, you need to install,
at least, PK, KEK and db.
+config EFI_SIGNATURE_SUPPORT
+ bool
+
config EFI_ESRT
bool "Enable the UEFI ESRT generation"
depends on EFI_CAPSULE_FIRMWARE_MANAGEMENT
diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
index 8bd343e..fd344ce 100644
--- a/lib/efi_loader/Makefile
+++ b/lib/efi_loader/Makefile
@@ -63,7 +63,7 @@ obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += efi_smbios.o
obj-$(CONFIG_EFI_RNG_PROTOCOL) += efi_rng.o
obj-$(CONFIG_EFI_TCG2_PROTOCOL) += efi_tcg2.o
obj-$(CONFIG_EFI_LOAD_FILE2_INITRD) += efi_load_initrd.o
-obj-y += efi_signature.o
+obj-$(CONFIG_EFI_SIGNATURE_SUPPORT) += efi_signature.o
EFI_VAR_SEED_FILE := $(subst $\",,$(CONFIG_EFI_VAR_SEED_FILE))
$(obj)/efi_var_seed.o: $(srctree)/$(EFI_VAR_SEED_FILE)
diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c
index f53ef36..fe1ee19 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 = &regs->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(&regs->reg[j + 1], &regs->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 = &regs->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
diff --git a/lib/efi_loader/efi_signature.c b/lib/efi_loader/efi_signature.c
index c7ec275..bdd0988 100644
--- a/lib/efi_loader/efi_signature.c
+++ b/lib/efi_loader/efi_signature.c
@@ -15,18 +15,16 @@
#include <crypto/public_key.h>
#include <linux/compat.h>
#include <linux/oid_registry.h>
+#include <u-boot/hash-checksum.h>
#include <u-boot/rsa.h>
#include <u-boot/sha256.h>
-const efi_guid_t efi_guid_image_security_database =
- EFI_IMAGE_SECURITY_DATABASE_GUID;
const efi_guid_t efi_guid_sha256 = EFI_CERT_SHA256_GUID;
const efi_guid_t efi_guid_cert_rsa2048 = EFI_CERT_RSA2048_GUID;
const efi_guid_t efi_guid_cert_x509 = EFI_CERT_X509_GUID;
const efi_guid_t efi_guid_cert_x509_sha256 = EFI_CERT_X509_SHA256_GUID;
const efi_guid_t efi_guid_cert_type_pkcs7 = EFI_CERT_TYPE_PKCS7_GUID;
-#if defined(CONFIG_EFI_SECURE_BOOT) || defined(CONFIG_EFI_CAPSULE_AUTHENTICATE)
static u8 pkcs7_hdr[] = {
/* SEQUENCE */
0x30, 0x82, 0x05, 0xc7,
@@ -540,68 +538,6 @@ out:
}
/**
- * 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 = &regs->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(&regs->reg[j + 1], &regs->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 = &regs->reg[i];
- reg->data = start;
- reg->size = end - start;
- regs->num++;
-
- return EFI_SUCCESS;
-}
-
-/**
* efi_sigstore_free - free signature store
* @sigstore: Pointer to signature store structure
*
@@ -846,4 +782,3 @@ struct efi_signature_store *efi_sigstore_parse_sigdb(u16 *name)
return efi_build_signature_store(db, db_size);
}
-#endif /* CONFIG_EFI_SECURE_BOOT || CONFIG_EFI_CAPSULE_AUTHENTICATE */
diff --git a/lib/efi_loader/efi_var_common.c b/lib/efi_loader/efi_var_common.c
index b11ed91..83479dd 100644
--- a/lib/efi_loader/efi_var_common.c
+++ b/lib/efi_loader/efi_var_common.c
@@ -24,6 +24,9 @@ struct efi_auth_var_name_type {
const enum efi_auth_var_type type;
};
+const efi_guid_t efi_guid_image_security_database =
+ EFI_IMAGE_SECURITY_DATABASE_GUID;
+
static const struct efi_auth_var_name_type name_type[] = {
{u"PK", &efi_global_variable_guid, EFI_AUTH_VAR_PK},
{u"KEK", &efi_global_variable_guid, EFI_AUTH_VAR_KEK},