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#include <common.h>
#include <errno.h>
#include <environment.h>
#include <asm/saradc.h>
#ifndef CONFIG_SARADC_CH
#define CONFIG_SARADC_CH 2
#endif
inline int get_source_key(int channel)
{
int adc_chan = channel;
int adc_val = get_adc_sample_gxbb(adc_chan);
//printf("get_source_key (%d) at channel (%d)\n", adc_val,adc_chan);
return adc_val;
}
static void check_auto_update(void)
{
int source_key_value = -1;
int times=40;
while (times--) {
udelay(100000);
source_key_value = get_source_key(CONFIG_SARADC_CH);
if ((source_key_value >= 0) && (source_key_value < 40)) {
//printk("press update key!\n");
} else {
return ;
}
}
printf("press update key!\n");
run_command ("run update", 0);
}
static void press_key_into_update(void)
{
saradc_enable();
check_auto_update();
//saradc_disable();
}
static int do_forceupdate(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
press_key_into_update();
return 0;
}
U_BOOT_CMD(
forceupdate, 1, 1, do_forceupdate,
"forceupdate",
"forceupdate - press adc key before power on\n"
);
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