Blame view
board/embedian/common/recovery.c
1.71 KB
b03fe7950
Initial Commit fo...
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 |
/*
* Copyright (C) 2010-2016 Freescale Semiconductor, Inc. All Rights Reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <recovery.h>
#ifdef CONFIG_MXC_KPD
#include <mxc_keyb.h>
#endif
#include <asm/imx-common/boot_mode.h>
#ifdef CONFIG_MXC_KPD
#define PRESSED_VOL_DOWN 0x01
#define PRESSED_POWER 0x02
#define RECOVERY_KEY_MASK (PRESSED_VOL_DOWN | PRESSED_POWER)
inline int test_key(int value, struct kpp_key_info *ki)
{
return (ki->val == value) && (ki->evt == KDepress);
}
int check_key_pressing(void)
{
struct kpp_key_info *key_info = NULL;
int state = 0, keys, i;
int ret = 0;
mxc_kpp_init();
/* due to glitch suppression circuit,
wait sometime to let all keys scanned. */
udelay(1000);
keys = mxc_kpp_getc(&key_info);
printf("Detecting VOL_DOWN+POWER key for recovery(%d:%d) ...
",
keys, keys ? key_info->val : 0);
if (keys > 1) {
for (i = 0; i < keys; i++) {
if (test_key(CONFIG_POWER_KEY, &key_info[i]))
state |= PRESSED_POWER;
else if (test_key(CONFIG_VOL_DOWN_KEY, &key_info[i]))
state |= PRESSED_VOL_DOWN;
}
}
if ((state & RECOVERY_KEY_MASK) == RECOVERY_KEY_MASK)
ret = 1;
if (key_info)
free(key_info);
return ret;
}
#else
/* If not using mxc keypad, currently we will detect power key on board */
int check_key_pressing(void)
{
return 0;
}
#endif
void setup_recovery_env(void)
{
board_recovery_setup();
}
/* export to lib_arm/board.c */
void check_recovery_mode(void)
{
if (check_key_pressing()) {
puts("Fastboot: Recovery key pressing got!
");
setup_recovery_env();
} else if (check_recovery_cmd_file()) {
puts("Fastboot: Recovery command file found!
");
setup_recovery_env();
} else {
puts("Fastboot: Normal
");
}
}
|