Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
961 B
C
46 lines
961 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)
|
|
{
|
|
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;
|
|
}
|