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bootstd: Introduce programmatic boot

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At present bootstd requires CONFIG_CMDLINE to operate. Add a new
'programmatic' boot which can be used when no command line is available.
For now it does almost nothing, since most bootmeths require the
command line.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-11-18 14:05:19 -07:00 • committed by Tom Rini
parent 984e6fedb5
commit 1047b5340c
5 changed files with 85 additions and 0 deletions
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51
boot/prog_boot.c Normal file
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2021 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEGORY UCLASS_BOOTSTD
#include <bootflow.h>
#include <bootstd.h>
#include <command.h>
#include <dm.h>
/*
* show_bootmeths() - List available bootmeths
*
* We could refactor this to use do_bootmeth_list() if more detail (or ordering)
* are needed
*/
static void show_bootmeths(void)
{
struct udevice *dev;
struct uclass *uc;
printf("Bootmeths: ");
uclass_id_foreach_dev(UCLASS_BOOTMETH, dev, uc)
printf(" %s", dev->name);
printf("\n");
}
int bootstd_prog_boot(void)
{
struct bootflow_iter iter;
struct bootflow bflow;
int ret, flags, i;
printf("Programmatic boot starting\n");
show_bootmeths();
flags = BOOTFLOWIF_HUNT | BOOTFLOWIF_SHOW | BOOTFLOWIF_SKIP_GLOBAL;
bootstd_clear_glob();
for (i = 0, ret = bootflow_scan_first(NULL, NULL, &iter, flags, &bflow);
i < 1000 && ret != -ENODEV;
i++, ret = bootflow_scan_next(&iter, &bflow)) {
if (!bflow.err)
bootflow_run_boot(&iter, &bflow);
bootflow_free(&bflow);
}
return -EFAULT;
}