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/*
* Freescale Android Recovery mode checking routing
* Copyright (C) 2010 Freescale Semiconductor, Inc.
*
* This software may be used and distributed according to the
* terms of the GNU Public License, Version 2, incorporated
* herein by reference.
*
*/
#include <common.h>
#include <malloc.h>
#include "recovery.h"
#ifdef CONFIG_MXC_KPD
#include <mxc_keyb.h>
#endif
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;
int state = 0, keys, i;
mxc_kpp_init();
puts("Detecting HOME+POWER key for recovery ...\n");
/* Check for home + power */
keys = mxc_kpp_getc(&key_info);
if (keys < 2)
return 0;
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;
}
free(key_info);
if ((state & RECOVERY_KEY_MASK) == RECOVERY_KEY_MASK)
return 1;
return 0;
}
#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_args, *boot_cmd;
int bootdev = get_boot_device();
boot_cmd = supported_reco_envs[bootdev].cmd;
boot_args = supported_reco_envs[bootdev].args;
if (boot_cmd == NULL) {
printf("Unsupported bootup device for recovery\n");
return;
}
printf("setup env for recovery..\n");
env = getenv("bootargs_android_recovery");
/* Set env to recovery mode */
/* Only set recovery env when these env not exist, give user a
* chance to change their recovery env */
if (!env)
setenv("bootargs_android_recovery", boot_args);
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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