Enter download mode if the download key pressed.
Signed-off-by: Andy Yan andy.yan@rock-chips.com ---
arch/arm/mach-rockchip/boot_mode.c | 27 ++++++++++++++++++++++++++- board/rockchip/evb_rk3399/evb-rk3399.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-rockchip/boot_mode.c b/arch/arm/mach-rockchip/boot_mode.c index 7b3cbc5..bff1cbc 100644 --- a/arch/arm/mach-rockchip/boot_mode.c +++ b/arch/arm/mach-rockchip/boot_mode.c @@ -8,11 +8,36 @@ #include <asm/io.h> #include <asm/arch/boot_mode.h>
+void set_back_to_bootrom_dnl_flag(void) +{ + writel(BOOT_BROM_DOWNLOAD, CONFIG_ROCKCHIP_BOOT_MODE_REG); +} + +/* + * some boards use a adc key, but some use gpio + */ +__weak int rockchip_dnl_key_pressed(void) +{ + return false; +} + +void rockchip_dnl_mode_check(void) +{ + if (rockchip_dnl_key_pressed()) { + printf("download key pressed, enter download mode..."); + set_back_to_bootrom_dnl_flag(); + do_reset(NULL, 0, 0, NULL); + } +} + int setup_boot_mode(void) { void* reg = (void *)CONFIG_ROCKCHIP_BOOT_MODE_REG; - int boot_mode = readl(reg); + int boot_mode; + + rockchip_dnl_mode_check();
+ boot_mode = readl(reg); debug("boot mode %x.\n", boot_mode);
/* Clear boot mode */ diff --git a/board/rockchip/evb_rk3399/evb-rk3399.c b/board/rockchip/evb_rk3399/evb-rk3399.c index d50c59d..738d942 100644 --- a/board/rockchip/evb_rk3399/evb-rk3399.c +++ b/board/rockchip/evb_rk3399/evb-rk3399.c @@ -4,6 +4,7 @@ * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> +#include <adc.h> #include <dm.h> #include <ram.h> #include <dm/pinctrl.h> @@ -13,6 +14,33 @@
DECLARE_GLOBAL_DATA_PTR;
+#define KEY_DOWN_MIN_VAL 1 +#define KEY_DOWN_MAX_VAL 20 + +int rockchip_dnl_key_pressed(void) +{ + unsigned int ret; + unsigned int i; + unsigned int val; + int cnt = 0; + + for (i = 0; i < 10; i++) { + ret = adc_channel_single_shot("saradc", 1, &val); + if (ret) { + printf("%s adc_channel_single_shot fail!\n", __func__); + break; + } + + if ((val >= KEY_DOWN_MIN_VAL) && (val <= KEY_DOWN_MAX_VAL)) + cnt++; + } + + if (cnt >= 8) + return true; + else + return false; +} + int board_init(void) { struct udevice *pinctrl, *regulator;