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
--
2.1.4
