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efi_rng_protocol: Install the efi_rng_protocol on the root node

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Install the EFI_RNG_PROTOCOL implementation for it's subsequent use by
the kernel for features like kaslr.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Sughosh Ganu 2019-12-29 00:01:06 +05:30 committed by Heinrich Schuchardt
parent f552fa496c
commit 33c37d9784
3 changed files with 10 additions and 0 deletions
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4
include/efi_loader.h
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@ -133,6 +133,7 @@ extern const struct efi_hii_config_routing_protocol efi_hii_config_routing;
extern const struct efi_hii_config_access_protocol efi_hii_config_access;
extern const struct efi_hii_database_protocol efi_hii_database;
extern const struct efi_hii_string_protocol efi_hii_string;
extern const struct efi_rng_protocol efi_rng_protocol;
uint16_t *efi_dp_str(struct efi_device_path *dp);
@ -178,6 +179,9 @@ extern const efi_guid_t efi_guid_hii_config_access_protocol;
extern const efi_guid_t efi_guid_hii_database_protocol;
extern const efi_guid_t efi_guid_hii_string_protocol;
/* GUID of RNG protocol */
extern const efi_guid_t efi_guid_rng_protocol;
extern unsigned int __efi_runtime_start, __efi_runtime_stop;
extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;

2
lib/efi_loader/efi_rng.c
View File

@ -11,6 +11,8 @@
DECLARE_GLOBAL_DATA_PTR;
const efi_guid_t efi_guid_rng_protocol = EFI_RNG_PROTOCOL_GUID;
__weak efi_status_t platform_get_rng_device(struct udevice **dev)
{
int ret;

4
lib/efi_loader/efi_root_node.c
View File

@ -80,6 +80,10 @@ efi_status_t efi_root_node_register(void)
/* HII configuration routing protocol */
&efi_guid_hii_config_routing_protocol,
(void *)&efi_hii_config_routing,
#endif
#if CONFIG_IS_ENABLED(EFI_RNG_PROTOCOL)
&efi_guid_rng_protocol,
(void *)&efi_rng_protocol,
#endif
NULL));
efi_root->type = EFI_OBJECT_TYPE_U_BOOT_FIRMWARE;