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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * Verified Boot for Embedded (VBE) support
- * See doc/develop/vbe.rst
- *
- * Copyright 2022 Google LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
- #ifndef __VBE_H
- #define __VBE_H
- /**
- * enum vbe_phase_t - current phase of VBE
- *
- * VBE operates in two distinct phases. In VPL it has to choose which firmware
- * to run (SPL, U-Boot, OP-TEE, etc.). It then carries on running until it gets
- * to U-Boot, where it decides which OS to run
- *
- * @VBE_PHASE_FIRMWARE: Selecting the firmware to run
- * @VBE_PHASE_OS: Selecting the Operating System to run
- */
- enum vbe_phase_t {
- VBE_PHASE_FIRMWARE,
- VBE_PHASE_OS,
- };
- /**
- * struct vbe_handoff - information about VBE progress
- *
- * @phases: Indicates which phases used the VBE bootmeth (1 << PHASE_...)
- */
- struct vbe_handoff {
- u8 phases;
- };
- /**
- * vbe_phase() - get current VBE phase
- *
- * Returns: Current VBE phase
- */
- static inline enum vbe_phase_t vbe_phase(void)
- {
- if (IS_ENABLED(CONFIG_SPL_BUILD))
- return VBE_PHASE_FIRMWARE;
- return VBE_PHASE_OS;
- }
- /**
- * vbe_list() - List the VBE bootmeths
- *
- * This shows a list of the VBE bootmeth devices
- *
- * @return 0 (always)
- */
- int vbe_list(void);
- /**
- * vbe_find_by_any() - Find a VBE bootmeth by name or sequence
- *
- * @name: name (e.g. "vbe-simple"), or sequence ("2") to find
- * @devp: returns the device found, on success
- * Return: 0 if OK, -ve on error
- */
- int vbe_find_by_any(const char *name, struct udevice **devp);
- /**
- * vbe_find_first_device() - Find the first VBE bootmeth
- *
- * @devp: Returns first available VBE bootmeth, or NULL if none
- * Returns: 0 (always)
- */
- int vbe_find_first_device(struct udevice **devp);
- /**
- * vbe_find_next_device() - Find the next available VBE bootmeth
- *
- * @devp: Previous device to start from. Returns next available VBE bootmeth,
- * or NULL if none
- * Returns: 0 (always)
- */
- int vbe_find_next_device(struct udevice **devp);
- #endif
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