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>
141 lines
3.0 KiB
C
141 lines
3.0 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, bool restart)
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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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plat->ctx.restart = restart;
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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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