2283ab0538
It is useful to be able to inspect things before the OS is actually booted, perhaps to check that all is well or to adjust the kernel command-line. Implement the 'read_all()' method to allow this. Provide a simple test to check that the images are found. For now it is not possible to actually continue the uninterrupted boot, without re-reading all the images. Signed-off-by: Simon Glass <sjg@chromium.org>
83 lines
2.3 KiB
C
83 lines
2.3 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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* 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);
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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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