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rockchip: kylin: Check fastboot request

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We will save boot mode flag in grf's os_reg[4], if fastboot
requested or fastboot key pressed, try to enter fastboot mode
at preboot stage.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Jeffy Chen 2016-01-14 10:19:40 +08:00 committed by Simon Glass
parent 197e14ea7a
commit e68f203667
2 changed files with 35 additions and 0 deletions
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32
board/kylin/kylin_rk3036/kylin_rk3036.c
View file

@ -8,10 +8,14 @@
#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
void get_ddr_config(struct rk3036_ddr_config *config)
{
/* K4B4G1646Q config */
@ -28,6 +32,34 @@ void get_ddr_config(struct rk3036_ddr_config *config)
config->bw = 1;
}
#define FASTBOOT_KEY_GPIO 93
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);
}
#define ROCKCHIP_BOOT_MODE_FASTBOOT 0x5242C309
int board_late_init(void)
{
struct rk3036_grf * const grf = (void *)GRF_BASE;
int boot_mode = readl(&grf->os_reg[4]);
/* Clear boot mode */
writel(0, &grf->os_reg[4]);
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;

3
include/configs/kylin_rk3036.h
View file

@ -38,4 +38,7 @@
#endif
#define CONFIG_BOARD_LATE_INIT
#define CONFIG_PREBOOT
#endif