37 lines
764 B
C
37 lines
764 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include <linux/efi_embedded_fw.h>
|
|
#include <linux/property.h>
|
|
#include <linux/security.h>
|
|
#include <linux/vmalloc.h>
|
|
|
|
#include "fallback.h"
|
|
#include "firmware.h"
|
|
|
|
int firmware_fallback_platform(struct fw_priv *fw_priv, u32 opt_flags)
|
|
{
|
|
const u8 *data;
|
|
size_t size;
|
|
int rc;
|
|
|
|
if (!(opt_flags & FW_OPT_FALLBACK_PLATFORM))
|
|
return -ENOENT;
|
|
|
|
rc = security_kernel_load_data(LOADING_FIRMWARE_EFI_EMBEDDED);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = efi_get_embedded_fw(fw_priv->fw_name, &data, &size);
|
|
if (rc)
|
|
return rc; /* rc == -ENOENT when the fw was not found */
|
|
|
|
fw_priv->data = vmalloc(size);
|
|
if (!fw_priv->data)
|
|
return -ENOMEM;
|
|
|
|
memcpy(fw_priv->data, data, size);
|
|
fw_priv->size = size;
|
|
fw_state_done(fw_priv);
|
|
return 0;
|
|
}
|