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https://github.com/smaeul/u-boot.git
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4c7418f3ef
Create a new bootmeth for VBE along with a library to handle finding the VBE methods. Signed-off-by: Simon Glass <sjg@chromium.org>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Standard U-Boot boot framework
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*
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* Copyright 2021 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#ifndef __bootstd_h
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#define __bootstd_h
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struct udevice;
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/**
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* struct bootstd_priv - priv data for the bootstd driver
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*
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* This is attached to the (only) bootstd device, so there is only one instance
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* of this struct. It provides overall information about bootdevs and bootflows.
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*
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* @prefixes: NULL-terminated list of prefixes to use for bootflow filenames,
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* e.g. "/", "/boot/"; NULL if none
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* @bootdev_order: Order to use for bootdevs (or NULL if none), with each item
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* being a bootdev label, e.g. "mmc2", "mmc1";
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* @cur_bootdev: Currently selected bootdev (for commands)
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* @cur_bootflow: Currently selected bootflow (for commands)
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* @glob_head: Head for the global list of all bootflows across all bootdevs
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* @bootmeth_count: Number of bootmeth devices in @bootmeth_order
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* @bootmeth_order: List of bootmeth devices to use, in order, NULL-terminated
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* @vbe_bootmeth: Currently selected VBE bootmeth, NULL if none
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*/
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struct bootstd_priv {
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const char **prefixes;
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const char **bootdev_order;
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struct udevice *cur_bootdev;
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struct bootflow *cur_bootflow;
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struct list_head glob_head;
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int bootmeth_count;
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struct udevice **bootmeth_order;
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struct udevice *vbe_bootmeth;
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};
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/**
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* bootstd_get_bootdev_order() - Get the boot-order list
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*
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* This reads the boot order, e.g. {"mmc0", "mmc2", NULL}
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*
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* The list is alloced by the bootstd driver so should not be freed. That is the
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* reason for all the const stuff in the function signature
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*
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* Return: list of string points, terminated by NULL; or NULL if no boot order
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*/
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const char *const *const bootstd_get_bootdev_order(struct udevice *dev);
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/**
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* bootstd_get_prefixes() - Get the filename-prefixes list
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*
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* This reads the prefixes, e.g. {"/", "/bpot", NULL}
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*
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* The list is alloced by the bootstd driver so should not be freed. That is the
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* reason for all the const stuff in the function signature
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*
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* Return: list of string points, terminated by NULL; or NULL if no boot order
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*/
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const char *const *const bootstd_get_prefixes(struct udevice *dev);
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/**
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* bootstd_get_priv() - Get the (single) state for the bootstd system
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*
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* The state holds a global list of all bootflows that have been found.
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*
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* Return: 0 if OK, -ve if the uclass does not exist
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*/
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int bootstd_get_priv(struct bootstd_priv **stdp);
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/**
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* bootstd_clear_glob() - Clear the global list of bootflows
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*
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* This removes all bootflows globally and across all bootdevs.
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*/
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void bootstd_clear_glob(void);
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#endif
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