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vbe: Add initial support for VBE

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Create a new bootmeth for VBE along with a library to handle finding the
VBE methods.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-07-30 15:52:32 -06:00
committed by Tom Rini
parent 98887ab802
commit 4c7418f3ef
5 changed files with 181 additions and 0 deletions
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2
include/bootstd.h
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@@ -26,6 +26,7 @@ struct udevice;
* @glob_head: Head for the global list of all bootflows across all bootdevs
* @bootmeth_count: Number of bootmeth devices in @bootmeth_order
* @bootmeth_order: List of bootmeth devices to use, in order, NULL-terminated
* @vbe_bootmeth: Currently selected VBE bootmeth, NULL if none
*/
struct bootstd_priv {
const char **prefixes;
@@ -35,6 +36,7 @@ struct bootstd_priv {
struct list_head glob_head;
int bootmeth_count;
struct udevice **bootmeth_order;
struct udevice *vbe_bootmeth;
};
/**

48
include/vbe.h Normal file
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@@ -0,0 +1,48 @@
/* 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
/**
* 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