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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/drivers/bootcount/bootcount_env.c

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bootcount: store bootcount var in environment If no softreset save registers are found on the hardware "bootcount" is stored in the environment. To prevent a saveenv on all reboots, the environment variable "upgrade_available" is introduced. If "upgrade_available" is 0, "bootcount" is always 0 therefore no need to save the environment on u-boot boot, if "upgrade_available" is 1 "bootcount" is incremented in the environment and environment gets written on u-boot start. So the Userspace Applikation must set the "upgrade_available" and "bootcount" variable to 0 (for example with fw_setenv), if a boot was successfully. Signed-off-by: Heiko Schocher <hs@denx.de>
11 years ago
/*
* (C) Copyright 2013
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
void bootcount_store(ulong a)
{
int upgrade_available = getenv_ulong("upgrade_available", 10, 0);
if (upgrade_available) {
setenv_ulong("bootcount", a);
saveenv();
}
}
ulong bootcount_load(void)
{
int upgrade_available = getenv_ulong("upgrade_available", 10, 0);
ulong val = 0;
if (upgrade_available)
val = getenv_ulong("bootcount", 10, 0);
return val;
}