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-boot\board\rockchip\common\rkloader\key.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

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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\n",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)  {