diff options
| -rw-r--r-- | include/efi_loader.h | 3 | ||||
| -rw-r--r-- | lib/efi_loader/efi_rng.c | 30 | ||||
| -rw-r--r-- | lib/efi_loader/efi_root_node.c | 4 | ||||
| -rw-r--r-- | lib/efi_loader/efi_setup.c | 5 |
4 files changed, 36 insertions, 6 deletions
diff --git a/include/efi_loader.h b/include/efi_loader.h index 0baa1d2324..7eea5566fd 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -154,7 +154,6 @@ 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); @@ -404,6 +403,8 @@ efi_status_t EFIAPI efi_convert_pointer(efi_uintn_t debug_disposition, efi_status_t efi_console_register(void); /* Called by bootefi to make all disk storage accessible as EFI objects */ efi_status_t efi_disk_register(void); +/* Called by efi_init_obj_list() to install EFI_RNG_PROTOCOL */ +efi_status_t efi_rng_register(void); /* Create handles and protocols for the partitions of a block device */ int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc, const char *if_typename, int diskid, diff --git a/lib/efi_loader/efi_rng.c b/lib/efi_loader/efi_rng.c index caef4085b0..a8a87007b6 100644 --- a/lib/efi_loader/efi_rng.c +++ b/lib/efi_loader/efi_rng.c @@ -3,6 +3,8 @@ * Copyright (c) 2019, Linaro Limited */ +#define LOG_CATEGORY LOGC_EFI + #include <common.h> #include <dm.h> #include <efi_loader.h> @@ -144,7 +146,33 @@ back: return EFI_EXIT(status); } -const struct efi_rng_protocol efi_rng_protocol = { +static const struct efi_rng_protocol efi_rng_protocol = { .get_info = rng_getinfo, .get_rng = getrng, }; + +/** + * efi_rng_register() - register EFI_RNG_PROTOCOL + * + * If a RNG device is available, the Random Number Generator Protocol is + * registered. + * + * Return: An error status is only returned if adding the protocol fails. + */ +efi_status_t efi_rng_register(void) +{ + efi_status_t ret; + struct udevice *dev; + + ret = platform_get_rng_device(&dev); + if (ret != EFI_SUCCESS) { + log_warning("Missing RNG device for EFI_RNG_PROTOCOL"); + return EFI_SUCCESS; + } + ret = efi_add_protocol(efi_root, &efi_guid_rng_protocol, + (void *)&efi_rng_protocol); + if (ret != EFI_SUCCESS) + log_err("Cannot install EFI_RNG_PROTOCOL"); + + return ret; +} diff --git a/lib/efi_loader/efi_root_node.c b/lib/efi_loader/efi_root_node.c index 76d18fb1a4..f68b0fdc61 100644 --- a/lib/efi_loader/efi_root_node.c +++ b/lib/efi_loader/efi_root_node.c @@ -81,10 +81,6 @@ efi_status_t efi_root_node_register(void) &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; return ret; diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c index 6196c0a06c..45226c5c1a 100644 --- a/lib/efi_loader/efi_setup.c +++ b/lib/efi_loader/efi_setup.c @@ -151,6 +151,11 @@ efi_status_t efi_init_obj_list(void) if (ret != EFI_SUCCESS) goto out; #endif + if (IS_ENABLED(CONFIG_EFI_RNG_PROTOCOL)) { + ret = efi_rng_register(); + if (ret != EFI_SUCCESS) + goto out; + } /* Initialize variable services */ ret = efi_init_variables(); if (ret != EFI_SUCCESS) |