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efi_loader: enable UEFI variables at runtime

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Enable UEFI variables at runtime.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-03-24 19:54:53 +00:00
parent ab7296c99c
commit b02a707152
3 changed files with 17 additions and 5 deletions
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2
lib/efi_loader/efi_runtime.c
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@ -121,6 +121,8 @@ efi_status_t efi_init_runtime_supported(void)
rt_table->version = EFI_RT_PROPERTIES_TABLE_VERSION;
rt_table->length = sizeof(struct efi_rt_properties_table);
rt_table->runtime_services_supported =
EFI_RT_SUPPORTED_GET_VARIABLE |
EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME |
EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP |
EFI_RT_SUPPORTED_CONVERT_POINTER;

6
lib/efi_loader/efi_var_file.c
View file

@ -183,9 +183,9 @@ static efi_status_t __maybe_unused efi_var_restore(struct efi_var_file *buf)
u16 *data = var->name + u16_strlen(var->name) + 1;
if (var->attr & EFI_VARIABLE_NON_VOLATILE && var->length) {
ret = efi_set_variable_int(var->name, &var->guid,
var->attr, var->length,
data, true);
ret = efi_var_mem_ins(var->name, &var->guid, var->attr,
var->length, data, 0, NULL,
var->time);
if (ret != EFI_SUCCESS)
log_err("Failed to set EFI variable %ls\n",
var->name);

14
lib/efi_loader/efi_variable.c
View file

@ -668,7 +668,16 @@ static efi_status_t __efi_runtime EFIAPI
efi_get_variable_runtime(u16 *variable_name, const efi_guid_t *vendor,
u32 *attributes, efi_uintn_t *data_size, void *data)
{
return EFI_UNSUPPORTED;
efi_status_t ret;
ret = efi_get_variable_int(variable_name, vendor, attributes,
data_size, data, NULL);
/* Remove EFI_VARIABLE_READ_ONLY flag */
if (attributes)
*attributes &= EFI_VARIABLE_MASK;
return ret;
}
/**
@ -684,7 +693,8 @@ static efi_status_t __efi_runtime EFIAPI
efi_get_next_variable_name_runtime(efi_uintn_t *variable_name_size,
u16 *variable_name, efi_guid_t *vendor)
{
return EFI_UNSUPPORTED;
return efi_get_next_variable_name_int(variable_name_size, variable_name,
vendor);
}
/**