fc1906ea72
Add a new extlinux_setup() function which sets things up so that the bootflow can either be booted, or just probed. Provide a readall() method so that images can be read into memory, without booting the OS. Adjust the boot() method so that it can boot, after any changes have been made by the user. Update the test to change the bootargs and check that they are booted with the changes intact. Signed-off-by: Simon Glass <sjg@chromium.org>
140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Common functions for extlinux and PXE
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*
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* Copyright 2024 Collabora
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* Written by Martyn Welch <martyn.welch@collabora.com>
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*/
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#define LOG_CATEGORY UCLASS_BOOTSTD
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#include <dm.h>
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#include <extlinux.h>
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#include <mapmem.h>
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#include <linux/string.h>
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enum extlinux_option_type {
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EO_FALLBACK,
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EO_INVALID
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};
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struct extlinux_option {
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char *name;
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enum extlinux_option_type option;
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};
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static const struct extlinux_option options[] = {
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{"fallback", EO_FALLBACK},
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{NULL, EO_INVALID}
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};
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static enum extlinux_option_type extlinux_get_option(const char *option)
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{
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int i = 0;
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while (options[i].name) {
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if (!strcmp(options[i].name, option))
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return options[i].option;
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i++;
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}
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return EO_INVALID;
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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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struct extlinux_plat *plat;
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static enum extlinux_option_type option;
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plat = dev_get_plat(dev);
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option = extlinux_get_option(property);
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if (option == EO_INVALID) {
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printf("Invalid option\n");
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return -EINVAL;
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}
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switch (option) {
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case EO_FALLBACK:
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if (!strcmp(value, "1")) {
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plat->use_fallback = true;
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} else if (!strcmp(value, "0")) {
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plat->use_fallback = false;
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} else {
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printf("Unexpected value '%s'\n", value);
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return -EINVAL;
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}
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break;
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default:
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printf("Unrecognised property '%s'\n", property);
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return -EINVAL;
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}
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return 0;
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}
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static int extlinux_setup(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, struct pxe_context *ctx)
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{
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struct extlinux_plat *plat = dev_get_plat(dev);
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int ret;
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plat->info.dev = dev;
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plat->info.bflow = bflow;
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ret = pxe_setup_ctx(ctx, getfile, &plat->info, allow_abs_path, bootfile,
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false, plat->use_fallback, bflow);
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if (ret)
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return log_msg_ret("ctx", ret);
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return 0;
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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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struct extlinux_plat *plat = dev_get_plat(dev);
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ulong addr;
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int ret;
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/* if we have already selected a label, just boot it */
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if (plat->ctx.label) {
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ret = pxe_do_boot(&plat->ctx);
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} else {
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ret = extlinux_setup(dev, bflow, getfile, allow_abs_path,
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bootfile, &plat->ctx);
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if (ret)
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return log_msg_ret("elb", ret);
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addr = map_to_sysmem(bflow->buf);
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ret = pxe_process(&plat->ctx, addr, false);
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}
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if (ret)
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return log_msg_ret("elb", -EFAULT);
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return 0;
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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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{
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struct extlinux_plat *plat = dev_get_plat(dev);
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ulong addr;
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int ret;
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ret = extlinux_setup(dev, bflow, getfile, allow_abs_path, bootfile,
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&plat->ctx);
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if (ret)
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return log_msg_ret("era", ret);
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addr = map_to_sysmem(bflow->buf);
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ret = pxe_probe(&plat->ctx, addr, false);
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if (ret)
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return log_msg_ret("elb", -EFAULT);
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return 0;
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}
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