53b02e1015
If a load-only FIT has already provided a devicetree, PXE boot may need to restart the bootm sequence, rather than starting an entirely new one, so that the devicetree is preserved and used for booting. Add support for this by adding a new field in the context and updating extlinux_boot() to receive the value as a new parameter. Signed-off-by: Simon Glass <sjg@chromium.org>
85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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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 __extlinux_h
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#define __extlinux_h
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#include <pxe_utils.h>
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#define EXTLINUX_FNAME "extlinux/extlinux.conf"
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/**
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* struct extlinux_info - useful information for extlinux_getfile()
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*
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* @dev: bootmethod device being used to boot
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* @bflow: bootflow being booted
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*/
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struct extlinux_info {
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struct udevice *dev;
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struct bootflow *bflow;
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};
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/**
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* struct extlinux_plat - locate state for this bootmeth
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*
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* @use_falllback: true to boot with the fallback option
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* @ctx: holds the PXE context, if it should be saved
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* @info: information used for the getfile() method
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*/
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struct extlinux_plat {
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bool use_fallback;
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struct pxe_context ctx;
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struct extlinux_info info;
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};
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/**
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* extlinux_set_property() - set an extlinux property
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*
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* This allows the setting of bootmeth-specific properties to enable
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* automated finer-grained control of the boot process
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*
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* @name: String containing the name of the relevant boot method
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* @property: String containing the name of the property to set
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* @value: String containing the value to be set for the specified property
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* Return: 0 if OK, -EINVAL if an unknown property or invalid value is provided
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*/
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int extlinux_set_property(struct udevice *dev, const char *property,
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const char *value);
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/**
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* extlinux_boot() - Boot a bootflow
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*
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* @dev: bootmeth device
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* @bflow: Bootflow to boot
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* @getfile: Function to use to read files
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* @allow_abs_path: true to allow absolute paths
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* @bootfile: Bootfile whose directory loaded files are relative to, NULL if
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* none
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* @restart: true to use BOOTM_STATE_RESTART instead of BOOTM_STATE_START (only
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* supported with FIT / bootm)
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* Return: 0 if OK, -ve error code on failure
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*/
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int extlinux_boot(struct udevice *dev, struct bootflow *bflow,
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pxe_getfile_func getfile, bool allow_abs_path,
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const char *bootfile, bool restart);
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/**
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* extlinux_read_all() - read all files for a bootflow
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*
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* @dev: Bootmethod device to boot
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* @bflow: Bootflow to read
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* @getfile: Function to use to read files
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* @allow_abs_path: true to allow absolute paths
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* @bootfile: Bootfile whose directory loaded files are relative to, NULL if
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* none
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* Return: 0 if OK, -EIO on I/O error, other -ve on other error
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*/
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int extlinux_read_all(struct udevice *dev, struct bootflow *bflow,
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pxe_getfile_func getfile, bool allow_abs_path,
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const char *bootfile);
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#endif
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