RK Android7.1 使用POWER按键才能开机

KrisFei       [RK3399][Android7.1] Uboot启动过程小结

在board_fbt_preboot中 检测power键的状态 

u-bootoard ockchipcommon kloaderkey.c

__maybe_unused static key_config key_rockusb;
__maybe_unused static key_config key_recovery;
__maybe_unused static key_config key_fastboot;
__maybe_unused static key_config key_power;

　　　开机就循环 检测key_power

diff --git a/u-boot/board/rockchip/common/rkboot/fastboot.c b/u-boot/board/rockchip/common/rkboot/fastboot.c
index ce6a0a1..5c07172 100755
--- a/u-boot/board/rockchip/common/rkboot/fastboot.c
+++ b/u-boot/board/rockchip/common/rkboot/fastboot.c
@@ -429,6 +429,12 @@ static void board_fbt_low_power_off(void)
 }
 #endif /* CONFIG_RK_POWER */
 
+#define POWER_ON_KEY_DECT_BOOT
+
+#ifdef POWER_ON_KEY_DECT_BOOT
+extern void PowerOnKeyDectBoot(void);
+#endif
+
 bool board_fbt_exit_uboot_charge(void)
 {
 	int ret;
@@ -459,6 +465,7 @@ bool board_fbt_exit_uboot_charge(void)
 	return false;
 }
 
+
 /*
  * Determine if we should enter fastboot mode based on board specific
  * key press or parameter left in memory from previous boot.
@@ -470,6 +477,7 @@ bool board_fbt_exit_uboot_charge(void)
 void board_fbt_preboot(void)
 {
 	enum fbt_reboot_type frt;
+	int frt2 = 0;
 	__maybe_unused bool charge_enable = false;
 #ifdef CONFIG_UBOOT_CHARGE
 	int charge_node;			/*device node*/
@@ -483,6 +491,7 @@ void board_fbt_preboot(void)
 #endif
 
 	frt = board_fbt_get_reboot_type();
+	frt2 = frt;
 	/* cold boot */
 	if (frt == FASTBOOT_REBOOT_UNKNOWN)
 		charge_enable = true;
@@ -498,6 +507,15 @@ void board_fbt_preboot(void)
 		board_fbt_set_reboot_type(FASTBOOT_REBOOT_NORMAL);
 	}
 
+printf("board_fbt_preboot:%d
",frt);
+
+ if(frt2 == FASTBOOT_REBOOT_UNKNOWN)
+ {
+	#ifdef POWER_ON_KEY_DECT_BOOT
+	PowerOnKeyDectBoot();
+	#endif
+ }
+
 #ifdef CONFIG_RK_POWER
 	board_fbt_low_power_check();
 #endif
diff --git a/u-boot/board/rockchip/common/rkloader/key.c b/u-boot/board/rockchip/common/rkloader/key.c
index 3dcb758..0a14c0b 100755
--- a/u-boot/board/rockchip/common/rkloader/key.c
+++ b/u-boot/board/rockchip/common/rkloader/key.c
@@ -163,6 +163,17 @@ __maybe_unused static void FastbootKeyInit(void)
 	key_fastboot.key.adc.ctrl = SARADC_BASE + 8;
 }
 
+void PowerOnKeyDectBoot(void)
+{
+ int state=1;
+
+ while(1)
+ {
+ state = gpio_get_value(key_power.key.ioint.gpio);
+ if(state == 0)
+ break;
+ }
+}
 
 __maybe_unused static void PowerKeyInit(void)
 {