u-boot/common/bootretry.c
Simon Glass 00caae6d47 env: Rename getenv/_f() to env_get()
We are now using an env_ prefix for environment functions. Rename these
two functions for consistency. Also add function comments in common.h.

Quite a few places use getenv() in a condition context, provoking a
warning from checkpatch. These are fixed up in this patch also.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:30:24 -04:00

60 lines
1.3 KiB
C

/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <bootretry.h>
#include <cli.h>
#include <errno.h>
#include <watchdog.h>
#ifndef CONFIG_BOOT_RETRY_MIN
#define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
#endif
static uint64_t endtime; /* must be set, default is instant timeout */
static int retry_time = -1; /* -1 so can call readline before main_loop */
/***************************************************************************
* initialize command line timeout
*/
void bootretry_init_cmd_timeout(void)
{
char *s = env_get("bootretry");
if (s != NULL)
retry_time = (int)simple_strtol(s, NULL, 10);
else
retry_time = CONFIG_BOOT_RETRY_TIME;
if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
retry_time = CONFIG_BOOT_RETRY_MIN;
}
/***************************************************************************
* reset command line timeout to retry_time seconds
*/
void bootretry_reset_cmd_timeout(void)
{
endtime = endtick(retry_time);
}
int bootretry_tstc_timeout(void)
{
while (!tstc()) { /* while no incoming data */
if (retry_time >= 0 && get_ticks() > endtime)
return -ETIMEDOUT;
WATCHDOG_RESET();
}
return 0;
}
void bootretry_dont_retry(void)
{
retry_time = -1;
}