[RK3288][Android6.0] 调试笔记 --- 系统识别不同硬件版本方法

Platform: Rockchip

OS: Android 6.0

Kernel: 3.10.92

需求:

硬件版本不一样,通过几个gpio的高低电平来表示不同版本,

u-boot/kernel/hal/framework/app层都需要用到,那么

可以使用系统自身的参数传递机制以及property API来实现.

以一个gpio为例.
改动:
u-boot

diff --git a/board/rockchip/rk32xx/rk32xx.c b/board/rockchip/rk32xx/rk32xx.c

index f043f77..e9a7466 100644

--- a/board/rockchip/rk32xx/rk32xx.c

+++ b/board/rockchip/rk32xx/rk32xx.c

@@ -164,6 +164,12 @@ static void board_init_adjust_env(void)

     }

 }
 //宏定义包起来

+/*Kris,161219, hw version verify. {*/

+#ifdef CONFIG_ECO_HW_REV

+u8 eco_hw_rev = 0;

+#endif

+/*Kris,161219, hw version verify. }*/

+

 #ifdef CONFIG_BOARD_LATE_INIT

 extern char bootloader_ver[24];

 int board_late_init(void)

@@ -182,6 +188,15 @@ int board_late_init(void)

     key_init();

 #endif

 

+/*Kris,161219, hw version verify. {*/

+#ifdef CONFIG_ECO_HW_REV

+#define GPIO_ECO_HW_REV                (GPIO_BANK8 | GPIO_A7)

       //获取gpio状态

+      gpio_direction_input(GPIO_ECO_HW_REV);

+      eco_hw_rev = gpio_get_value(GPIO_ECO_HW_REV);

+      printf("HW board check version:%d\n", gpio_get_value(GPIO_ECO_HW_REV));

+#endif

+/*Kris,161219, hw version verify. }*/

+

 #ifdef CONFIG_RK_POWER

     debug("pmic_init\n");

     pmic_init(0);

diff --git a/common/cmd_bootrk.c b/common/cmd_bootrk.c

index 17ad496..9f101c6 100755

--- a/common/cmd_bootrk.c

+++ b/common/cmd_bootrk.c

@@ -42,6 +42,14 @@ extern int do_bootm_linux(int flag, int argc, char *argv[],

 #if defined(CONFIG_POWER_RK818)

 extern bool is_rk81x_fg_init(void);

 #endif

+

+/*Kris,161219, hw version verify. {*/

+#ifdef CONFIG_ECO_HW_REV

+extern u8 eco_hw_rev;

+#endif

+/*Kris,161219, hw version verify. }*/

+

+

 extern int rkimage_load_image(rk_boot_img_hdr *hdr,

         const disk_partition_t *boot_ptn, const disk_partition_t *kernel_ptn);

 

@@ -486,6 +494,13 @@ static void rk_commandline_setenv(const char *boot_name, rk_boot_img_hdr *hdr, b

              "%s adc.incre=%d", command_line, g_increment);

 #endif

 

+/*Kris,161219, hw version verify. {*/

+#ifdef CONFIG_ECO_HW_REV
//利用u-boot到kernel的cmdline参数传递机制,传到kernel中.

+snprintf(command_line, sizeof(command_line),

+             "%s androidboot.eco_hw_rev=%s", command_line, eco_hw_rev?"Primary":"Secondary");

+#endif

+/*Kris,161219, hw version verify. }*/

+

     char *sn = getenv("fbt_sn#");

     if (sn != NULL) {

         /* append serial number if it wasn't in device_info already */

diff --git a/include/configs/rk32plat.h b/include/configs/rk32plat.h

index f80799f..ec5e41d 100755

--- a/include/configs/rk32plat.h

+++ b/include/configs/rk32plat.h

@@ -224,4 +224,8 @@

 

 #endif /* CONFIG_RK_POWER */

 

+

+/*Kris,161219, hw version verify.*/

+#define CONFIG_ECO_HW_REV

+

 #endif /* __RK32PLAT_CONFIG_H */

 
kernel:

diff --git a/arch/arm/mach-rockchip/common.c b/arch/arm/mach-rockchip/common.c

index e80880e..107b58c 100755

--- a/arch/arm/mach-rockchip/common.c

+++ b/arch/arm/mach-rockchip/common.c

@@ -340,6 +340,21 @@ static int __init rockchip_uboot_logo_setup(char *p)

 }

 early_param("uboot_logo", rockchip_uboot_logo_setup);

 

+/*Kris, 20161219, add check hw rev interface. {*/
//kernel中可以使用eco_hw_rev来判断了.

+int eco_hw_rev;

+static int __init early_eco_hw_rev(char *p)

+{

+       get_option(&p, &eco_hw_rev);

+       if (!strncmp(p, "Primary", 7))

+        eco_hw_rev = 1;

+    else if (!strncmp(p, "Secondary", 9))

+        eco_hw_rev = 0;

+       printk("androidboot.eco_hw_rev:%s\n", p);

+       return 0;

+}

+early_param("androidboot.eco_hw_rev", early_eco_hw_rev);

+/*Kris, 20161219, add check hw rev interface. }*/

+

userspace:

注意到cmdline的参数是androidboot.eco_hw_rev, ,在init进程中会解析以androidboot打头的cmdline参数,

可参考: http://blog.csdn.net/kris_fei/article/details/50925356
最终生成ro.boot.xxx格式的property. 而在HAL, Natvie, APP层都有对应的api去解析property,这样整个系统都可以使用了.