[U-Boot] [PATCH v2 6/6] rockchip: kylin: Check fastboot request

[Jeffy Chen]

Hi Simon,

Just know our guys are upstreaming our reboot mode support with our 
legacy reboot mode definitions(in our legacy loader & kernel):
https://lkml.org/lkml/2015/12/21/161

and that serial seems close to get accepted, so i think maybe i should 
use that definitions too...

On 2016-1-8 18:33, Jeffy Chen wrote:
> We will save boot mode flag in grf's os_reg[0], if fastboot
> requested or fastboot key pressed, try to enter fastboot mode
> at preboot stage.
>
> Signed-off-by: Jeffy Chen <jeffy.chen at rock-chips.com>
> Acked-by: Simon Glass <sjg at chromium.org>
> ---
>
> Changes in v2: None
>
>   board/kylin/kylin_rk3036/kylin_rk3036.c | 32 ++++++++++++++++++++++++++++++++
>   include/configs/kylin_rk3036.h          |  3 +++
>   2 files changed, 35 insertions(+)
>
> diff --git a/board/kylin/kylin_rk3036/kylin_rk3036.c b/board/kylin/kylin_rk3036/kylin_rk3036.c
> index 40d6b52..df2c123 100644
> --- a/board/kylin/kylin_rk3036/kylin_rk3036.c
> +++ b/board/kylin/kylin_rk3036/kylin_rk3036.c
> @@ -8,10 +8,15 @@
>   #include <dm.h>
>   #include <asm/io.h>
>   #include <asm/arch/uart.h>
> +#include <asm/arch-rockchip/grf_rk3036.h>
>   #include <asm/arch/sdram_rk3036.h>
> +#include <asm/gpio.h>
>   
>   DECLARE_GLOBAL_DATA_PTR;
>   
> +#define GRF_BASE	0x20008000
> +static struct rk3036_grf * const grf = (void *)GRF_BASE;
> +
>   void get_ddr_config(struct rk3036_ddr_config *config)
>   {
>   	/* K4B4G1646Q config */
> @@ -28,6 +33,33 @@ void get_ddr_config(struct rk3036_ddr_config *config)
>   	config->bw = 1;
>   }
>   
> +#define FASTBOOT_KEY_GPIO 93
> +#define ROCKCHIP_BOOT_MODE_NORMAL	0
> +#define ROCKCHIP_BOOT_MODE_FASTBOOT	1
> +
> +int fastboot_key_pressed(void)
> +{
> +	gpio_request(FASTBOOT_KEY_GPIO, "fastboot_key");
> +	gpio_direction_input(FASTBOOT_KEY_GPIO);
> +	return !gpio_get_value(FASTBOOT_KEY_GPIO);
> +}
> +
> +int board_late_init(void)
> +{
> +	int boot_mode = readl(&grf->os_reg[0]);
> +
> +	/* Clear boot mode */
> +	writel(ROCKCHIP_BOOT_MODE_NORMAL, &grf->os_reg[0]);
> +
> +	if (boot_mode == ROCKCHIP_BOOT_MODE_FASTBOOT ||
> +	    fastboot_key_pressed()) {
> +		printf("enter fastboot!\n");
> +		setenv("preboot", "setenv preboot; fastboot usb0");
> +	}
> +
> +	return 0;
> +}
> +
>   int board_init(void)
>   {
>   	return 0;
> diff --git a/include/configs/kylin_rk3036.h b/include/configs/kylin_rk3036.h
> index 49997ec..424e81b 100644
> --- a/include/configs/kylin_rk3036.h
> +++ b/include/configs/kylin_rk3036.h
> @@ -39,6 +39,9 @@
>   	"mmcpart=5\0" \
>   	"loadaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
>   
> +#define CONFIG_BOARD_LATE_INIT
> +#define CONFIG_PREBOOT
> +
>   #define CONFIG_ANDROID_BOOT_IMAGE
>   #define CONFIG_SYS_BOOT_RAMDISK_HIGH
>   #define CONFIG_SYS_HUSH_PARSER