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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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961 B · 45 lines
C
at master
12345678910111213141516171819202122232425262728293031323334353637383940414243444546// 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){ const u8 *data; size_t size; int rc;
if (!(fw_priv->opt_flags & FW_OPT_FALLBACK_PLATFORM)) return -ENOENT;
rc = security_kernel_load_data(LOADING_FIRMWARE, true); 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 */
if (fw_priv->data && size > fw_priv->allocated_size) return -ENOMEM;
rc = security_kernel_post_load_data((u8 *)data, size, LOADING_FIRMWARE, "platform"); if (rc) return rc;
if (!fw_priv->data) 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;}