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fdt: allow bootdelay to be specified via device tree

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This can be useful to force bootcmd to execute as soon as U-Boot has
started.

My use-case is: An SoC-specific tool pushes U-Boot into RAM, along with
an image to be written to device boot flash, with the DT config property
"bootcmd" set to contain a command to write that image to flash. In this
scenario, we don't want to allow any stale bootdelay value taken from
the current flash content to affect how long it takes before the
flashing process starts.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Gerald Van Baren <vanbaren@cideas.com>
This commit is contained in:
Stephen Warren 2013-05-14 08:02:56 +00:00 committed by Tom Rini
parent df637fa6da
commit 99bd544ee7
1 changed files with 5 additions and 0 deletions
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5
common/main.c
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@ -358,6 +358,11 @@ static void process_boot_delay(void)
s = getenv ("bootdelay");
bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
#ifdef CONFIG_OF_CONTROL
bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay",
bootdelay);
#endif
debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
#if defined(CONFIG_MENU_SHOW)