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boot: Support restarting a bootm sequence from PXE

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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>
This commit is contained in:
Simon Glass
2025-08-02 07:00:08 +12:00
parent 8af19e54f7
commit 53b02e1015
6 changed files with 17 additions and 5 deletions
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7
boot/pxe_utils.c
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@@ -570,8 +570,13 @@ static int label_run_boot(struct pxe_context *ctx, struct pxe_label *label,
if (IS_ENABLED(CONFIG_CMD_BOOTM) && (fmt == IMAGE_FORMAT_FIT ||
fmt == IMAGE_FORMAT_LEGACY)) {
int states;
states = ctx->restart ? BOOTM_STATE_RESTART : BOOTM_STATE_START;
log_debug("using bootm\n");
ret = bootm_run(&bmi);
ret = boot_run(&bmi, "ext", states | BOOTM_STATE_FINDOS |
BOOTM_STATE_PRE_LOAD | BOOTM_STATE_FINDOTHER |
BOOTM_STATE_LOADOS);
/* Try booting an AArch64 Linux kernel image */
} else if (IS_ENABLED(CONFIG_CMD_BOOTI) && fmt == IMAGE_FORMAT_BOOTI) {
log_debug("using booti\n");