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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Verified Boot for Embedded (VBE) vbe-simple common file
- *
- * Copyright 2022 Google LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
- #ifndef __VBE_SIMPLE_H
- #define __VBE_SIMPLE_H
- 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 simple_priv - information read from the device tree */
- struct simple_priv {
- u32 area_start;
- u32 area_size;
- u32 skip_offset;
- u32 state_offset;
- u32 state_size;
- u32 version_offset;
- u32 version_size;
- const char *storage;
- };
- /** struct simple_state - state information read from media
- *
- * @fw_version: Firmware version string
- * @fw_vernum: Firmware version number
- */
- struct simple_state {
- char fw_version[MAX_VERSION_LEN];
- u32 fw_vernum;
- };
- /**
- * vbe_simple_read_fw_bootflow() - Read a bootflow for firmware
- *
- * Locates and loads the firmware image (FIT) needed for the next phase. The FIT
- * should ideally use external data, to reduce the amount of it that needs to be
- * read.
- *
- * @bdev: bootdev device containing the firmwre
- * @blow: Place to put the created bootflow, on success
- * @return 0 if OK, -ve on error
- */
- int vbe_simple_read_bootflow_fw(struct udevice *dev, struct bootflow *bflow);
- /**
- * vbe_simple_read_state() - Read the VBE simple state information
- *
- * @dev: VBE bootmeth
- * @state: Place to put the state
- * @return 0 if OK, -ve on error
- */
- int vbe_simple_read_state(struct udevice *dev, struct simple_state *state);
- #endif /* __VBE_SIMPLE_H */
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