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/*
* Freescale Android Recovery mode checking routing
*
* Copyright (C) 2010-2012 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <common.h>
#include <malloc.h>
#include <recovery.h>
#ifdef CONFIG_MXC_KPD
#include <mxc_keyb.h>
#endif
extern int check_powerkey_pressed(void);
extern int check_recovery_cmd_file(void);
extern enum boot_device get_boot_device(void);
#ifdef CONFIG_MXC_KPD
#define PRESSED_HOME 0x01
#define PRESSED_POWER 0x02
#define RECOVERY_KEY_MASK (PRESSED_HOME | 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);
if (!check_powerkey_pressed())
keys = 0;
#ifdef CONFIG_MX6SL_EVK
/* For mx6sl-evk, hold power+vol_down when boot
will enter recovery mode */
printf("Detecting VOL_DOWN+POWER key for recovery(%d:%d) ...\n",
keys, keys ? key_info->val : 0);
if (keys > 0) {
for (i = 0; i < keys; i++) {
if (test_key(CONFIG_VOL_DOWN_KEY, &key_info[i])) {
ret = 1;
break;
}
}
}
#else
puts("Detecting HOME+POWER key for recovery ...\n");
if (keys > 1) {
for (i = 0; i < keys; i++) {
if (test_key(CONFIG_POWER_KEY, &key_info[i]))
state |= PRESSED_HOME;
else if (test_key(CONFIG_HOME_KEY, &key_info[i]))
state |= PRESSED_POWER;
}
}
if ((state & RECOVERY_KEY_MASK) == RECOVERY_KEY_MASK)
ret = 1;
#endif
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
extern struct reco_envs supported_reco_envs[];
void setup_recovery_env(void)
{
char *env, *boot_cmd;
int bootdev = get_boot_device();
boot_cmd = supported_reco_envs[bootdev].cmd;
if (boot_cmd == NULL) {
printf("Unsupported bootup device for recovery: dev: %d\n", bootdev);
return;
}
printf("setup env for recovery..\n");
env = getenv("bootcmd_android_recovery");
if (!env)
setenv("bootcmd_android_recovery", boot_cmd);
setenv("bootcmd", "run bootcmd_android_recovery");
}
/* export to lib_arm/board.c */
void check_recovery_mode(void)
{
if (check_key_pressing())
setup_recovery_env();
else if (check_recovery_cmd_file()) {
puts("Recovery command file founded!\n");
setup_recovery_env();
}
}
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