diff options
Diffstat (limited to 'boot/vbe_common.h')
| -rw-r--r-- | boot/vbe_common.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/boot/vbe_common.h b/boot/vbe_common.h new file mode 100644 index 00000000000..1fc70ee74c8 --- /dev/null +++ b/boot/vbe_common.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Verified Boot for Embedded (VBE) common functions + * + * Copyright 2024 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#ifndef __VBE_COMMON_H +#define __VBE_COMMON_H + +#include <linux/types.h> + +struct udevice; + +enum { + MAX_VERSION_LEN = 256, + + NVD_HDR_VER_SHIFT = 0, + NVD_HDR_VER_MASK = 0xf, + NVD_HDR_SIZE_SHIFT = 4, + NVD_HDR_SIZE_MASK = 0xf << NVD_HDR_SIZE_SHIFT, + + /* Firmware key-version is in the top 16 bits of fw_ver */ + FWVER_KEY_SHIFT = 16, + FWVER_FW_MASK = 0xffff, + + NVD_HDR_VER_CUR = 1, /* current version */ +}; + +/** + * struct vbe_nvdata - basic storage format for non-volatile data + * + * This is used for all VBE methods + * + * @crc8: crc8 for the entire record except @crc8 field itself + * @hdr: header size and version (NVD_HDR_...) + * @spare1: unused, must be 0 + * @fw_vernum: version and key version (FWVER_...) + * @flags: Flags controlling operation (enum vbe_flags) + */ +struct vbe_nvdata { + u8 crc8; + u8 hdr; + u16 spare1; + u32 fw_vernum; + u32 flags; + u8 spare2[0x34]; +}; + +#endif /* __VBE_ABREC_H */ |