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efi_loader: define UpdateCapsule api

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In this commit, skeleton functions for capsule-related API's are
added under CONFIG_EFI_UPDATE_CAPSULE configuration.
Detailed implementation for a specific capsule type will be added
in the succeeding patches.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
This commit is contained in:
AKASHI Takahiro 2020-11-17 09:27:55 +09:00 • committed by Heinrich Schuchardt
parent 96ec4b1a18
commit 2bc27ca8a0
7 changed files with 316 additions and 54 deletions
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64
lib/efi_loader/efi_setup.c
View file

@ -100,9 +100,9 @@ static efi_status_t efi_init_secure_boot(void)
ret = efi_set_variable_int(L"SignatureSupport",
&efi_global_variable_guid,
EFI_VARIABLE_READ_ONLY |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_READ_ONLY,
EFI_VARIABLE_RUNTIME_ACCESS,
sizeof(signature_types),
&signature_types, false);
if (ret != EFI_SUCCESS)
@ -117,6 +117,53 @@ static efi_status_t efi_init_secure_boot(void)
}
#endif /* CONFIG_EFI_SECURE_BOOT */
/**
* efi_init_capsule - initialize capsule update state
*
* Return: status code
*/
static efi_status_t efi_init_capsule(void)
{
efi_status_t ret = EFI_SUCCESS;
if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_UPDATE)) {
ret = efi_set_variable_int(L"CapsuleMax",
&efi_guid_capsule_report,
EFI_VARIABLE_READ_ONLY |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
22, L"CapsuleFFFF", false);
if (ret != EFI_SUCCESS)
printf("EFI: cannot initialize CapsuleMax variable\n");
}
return ret;
}
/**
* efi_init_os_indications() - indicate supported features for OS requests
*
* Set the OsIndicationsSupported variable.
*
* Return: status code
*/
static efi_status_t efi_init_os_indications(void)
{
u64 os_indications_supported = 0;
if (IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT))
os_indications_supported |=
EFI_OS_INDICATIONS_CAPSULE_RESULT_VAR_SUPPORTED;
return efi_set_variable_int(L"OsIndicationsSupported",
&efi_global_variable_guid,
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_READ_ONLY,
sizeof(os_indications_supported),
&os_indications_supported, false);
}
/**
* efi_init_obj_list() - Initialize and populate EFI object list
*
@ -124,7 +171,6 @@ static efi_status_t efi_init_secure_boot(void)
*/
efi_status_t efi_init_obj_list(void)
{
u64 os_indications_supported = 0; /* None */
efi_status_t ret = EFI_SUCCESS;
/* Initialize once only */
@ -168,13 +214,7 @@ efi_status_t efi_init_obj_list(void)
goto out;
/* Indicate supported features */
ret = efi_set_variable_int(L"OsIndicationsSupported",
&efi_global_variable_guid,
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS |
EFI_VARIABLE_READ_ONLY,
sizeof(os_indications_supported),
&os_indications_supported, false);
ret = efi_init_os_indications();
if (ret != EFI_SUCCESS)
goto out;
@ -233,6 +273,10 @@ efi_status_t efi_init_obj_list(void)
if (ret != EFI_SUCCESS)
goto out;
ret = efi_init_capsule();
if (ret != EFI_SUCCESS)
goto out;
/* Initialize EFI runtime services */
ret = efi_reset_system_init();
if (ret != EFI_SUCCESS)