[GIT PULL] EFI updates for v5.5
From: Ingo Molnar
Date: Mon Nov 25 2019 - 06:04:24 EST
Linus,
Please pull the latest efi-core-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git efi-core-for-linus
# HEAD: 2278f452a12d5b5b01f96441a7a4336710365022 Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core
The main changes in this cycle were:
- Wire up the EFI RNG code for x86. This enables an additional source of
entropy during early boot.
- Enable the TPM event log code on ARM platforms.
- Update Ard's email address.
Thanks,
Ingo
------------------>
Ard Biesheuvel (1):
MAINTAINERS: update Ard's email address to @kernel.org
Dominik Brodowski (2):
efi/random: use arch-independent efi_call_proto()
x86: efi/random: Invoke EFI_RNG_PROTOCOL to seed the UEFI RNG table
Xinwei Kong (1):
efi: libstub/tpm: enable tpm eventlog function for ARM platforms
.mailmap | 1 +
MAINTAINERS | 8 ++++----
arch/x86/boot/compressed/eboot.c | 3 +++
drivers/firmware/efi/libstub/Makefile | 5 +++--
drivers/firmware/efi/libstub/arm-stub.c | 2 ++
drivers/firmware/efi/libstub/efistub.h | 2 --
drivers/firmware/efi/libstub/random.c | 23 ++++++++++++++++++-----
include/linux/efi.h | 2 ++
8 files changed, 33 insertions(+), 13 deletions(-)
diff --git a/.mailmap b/.mailmap
index 83d7e750c2fc..5d3b741a3f95 100644
--- a/.mailmap
+++ b/.mailmap
@@ -32,6 +32,7 @@ Andy Adamson <andros@xxxxxxxxxxxxxx>
Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx>
Antonio Ospite <ao2@xxxxxx> <ao2@xxxxxxxxxxxxxxxxxxxx>
Archit Taneja <archit@xxxxxx>
+Ard Biesheuvel <ardb@xxxxxxxxxx> <ard.biesheuvel@xxxxxxxxxx>
Arnaud Patard <arnaud.patard@xxxxxxxxxxx>
Arnd Bergmann <arnd@xxxxxxxx>
Axel Dyks <xl@xxxxxxxxxxxx>
diff --git a/MAINTAINERS b/MAINTAINERS
index cba1095547fd..cc9f02ab9316 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6003,14 +6003,14 @@ F: sound/usb/misc/ua101.c
EFI TEST DRIVER
L: linux-efi@xxxxxxxxxxxxxxx
M: Ivan Hu <ivan.hu@xxxxxxxxxxxxx>
-M: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
+M: Ard Biesheuvel <ardb@xxxxxxxxxx>
S: Maintained
F: drivers/firmware/efi/test/
EFI VARIABLE FILESYSTEM
M: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
M: Jeremy Kerr <jk@xxxxxxxxxx>
-M: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
+M: Ard Biesheuvel <ardb@xxxxxxxxxx>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git
L: linux-efi@xxxxxxxxxxxxxxx
S: Maintained
@@ -6189,7 +6189,7 @@ S: Supported
F: security/integrity/evm/
EXTENSIBLE FIRMWARE INTERFACE (EFI)
-M: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
+M: Ard Biesheuvel <ardb@xxxxxxxxxx>
L: linux-efi@xxxxxxxxxxxxxxx
T: git git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git
S: Maintained
@@ -15006,7 +15006,7 @@ F: include/media/soc_camera.h
F: drivers/staging/media/soc_camera/
SOCIONEXT SYNQUACER I2C DRIVER
-M: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
+M: Ard Biesheuvel <ardb@xxxxxxxxxx>
L: linux-i2c@xxxxxxxxxxxxxxx
S: Maintained
F: drivers/i2c/busses/i2c-synquacer.c
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 82bc60c8acb2..68945c5700bf 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -782,6 +782,9 @@ efi_main(struct efi_config *c, struct boot_params *boot_params)
/* Ask the firmware to clear memory on unclean shutdown */
efi_enable_reset_attack_mitigation(sys_table);
+
+ efi_random_get_seed(sys_table);
+
efi_retrieve_tpm2_eventlog(sys_table);
setup_graphics(boot_params);
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index ee0661ddb25b..c35f893897e1 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -38,7 +38,8 @@ OBJECT_FILES_NON_STANDARD := y
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
KCOV_INSTRUMENT := n
-lib-y := efi-stub-helper.o gop.o secureboot.o tpm.o
+lib-y := efi-stub-helper.o gop.o secureboot.o tpm.o \
+ random.o
# include the stub's generic dependencies from lib/ when building for ARM/arm64
arm-deps-y := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c fdt_empty_tree.c fdt_sw.c
@@ -47,7 +48,7 @@ arm-deps-$(CONFIG_ARM64) += sort.c
$(obj)/lib-%.o: $(srctree)/lib/%.c FORCE
$(call if_changed_rule,cc_o_c)
-lib-$(CONFIG_EFI_ARMSTUB) += arm-stub.o fdt.o string.o random.o \
+lib-$(CONFIG_EFI_ARMSTUB) += arm-stub.o fdt.o string.o \
$(patsubst %.c,lib-%.o,$(arm-deps-y))
lib-$(CONFIG_ARM) += arm32-stub.o
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index c382a48c6678..817237ce2420 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -189,6 +189,8 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table,
goto fail_free_cmdline;
}
+ efi_retrieve_tpm2_eventlog(sys_table);
+
/* Ask the firmware to clear memory on unclean shutdown */
efi_enable_reset_attack_mitigation(sys_table);
diff --git a/drivers/firmware/efi/libstub/efistub.h b/drivers/firmware/efi/libstub/efistub.h
index 7f1556fd867d..05739ae013c8 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -63,8 +63,6 @@ efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg,
efi_status_t check_platform_features(efi_system_table_t *sys_table_arg);
-efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg);
-
void *get_efi_config_table(efi_system_table_t *sys_table, efi_guid_t guid);
/* Helper macros for the usual case of using simple C variables: */
diff --git a/drivers/firmware/efi/libstub/random.c b/drivers/firmware/efi/libstub/random.c
index b4b1d1dcb5fd..53f1466f7de6 100644
--- a/drivers/firmware/efi/libstub/random.c
+++ b/drivers/firmware/efi/libstub/random.c
@@ -9,6 +9,18 @@
#include "efistub.h"
+typedef struct efi_rng_protocol efi_rng_protocol_t;
+
+typedef struct {
+ u32 get_info;
+ u32 get_rng;
+} efi_rng_protocol_32_t;
+
+typedef struct {
+ u64 get_info;
+ u64 get_rng;
+} efi_rng_protocol_64_t;
+
struct efi_rng_protocol {
efi_status_t (*get_info)(struct efi_rng_protocol *,
unsigned long *, efi_guid_t *);
@@ -28,7 +40,7 @@ efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table_arg,
if (status != EFI_SUCCESS)
return status;
- return rng->get_rng(rng, NULL, size, out);
+ return efi_call_proto(efi_rng_protocol, get_rng, rng, NULL, size, out);
}
/*
@@ -161,15 +173,16 @@ efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg)
if (status != EFI_SUCCESS)
return status;
- status = rng->get_rng(rng, &rng_algo_raw, EFI_RANDOM_SEED_SIZE,
- seed->bits);
+ status = efi_call_proto(efi_rng_protocol, get_rng, rng, &rng_algo_raw,
+ EFI_RANDOM_SEED_SIZE, seed->bits);
+
if (status == EFI_UNSUPPORTED)
/*
* Use whatever algorithm we have available if the raw algorithm
* is not implemented.
*/
- status = rng->get_rng(rng, NULL, EFI_RANDOM_SEED_SIZE,
- seed->bits);
+ status = efi_call_proto(efi_rng_protocol, get_rng, rng, NULL,
+ EFI_RANDOM_SEED_SIZE, seed->bits);
if (status != EFI_SUCCESS)
goto err_freepool;
diff --git a/include/linux/efi.h b/include/linux/efi.h
index d87acf62958e..028efa7a9f3b 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -1645,6 +1645,8 @@ static inline void
efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg) { }
#endif
+efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg);
+
void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table);
/*