mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
15f09a1a83
Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common header file path, so that we can get the correct path directly. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <adc.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch-rockchip/boot_mode.h>
|
|
|
|
#if (CONFIG_ROCKCHIP_BOOT_MODE_REG == 0)
|
|
|
|
int setup_boot_mode(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
void set_back_to_bootrom_dnl_flag(void)
|
|
{
|
|
writel(BOOT_BROM_DOWNLOAD, CONFIG_ROCKCHIP_BOOT_MODE_REG);
|
|
}
|
|
|
|
/*
|
|
* detect download key status by adc, most rockchip
|
|
* based boards use adc sample the download key status,
|
|
* but there are also some use gpio. So it's better to
|
|
* make this a weak function that can be override by
|
|
* some special boards.
|
|
*/
|
|
#define KEY_DOWN_MIN_VAL 0
|
|
#define KEY_DOWN_MAX_VAL 30
|
|
|
|
__weak int rockchip_dnl_key_pressed(void)
|
|
{
|
|
unsigned int val;
|
|
|
|
if (adc_channel_single_shot("saradc", 1, &val)) {
|
|
pr_err("%s: adc_channel_single_shot fail!\n", __func__);
|
|
return false;
|
|
}
|
|
|
|
if ((val >= KEY_DOWN_MIN_VAL) && (val <= KEY_DOWN_MAX_VAL))
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
void rockchip_dnl_mode_check(void)
|
|
{
|
|
if (rockchip_dnl_key_pressed()) {
|
|
printf("download key pressed, entering 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);
|
|
|
|
rockchip_dnl_mode_check();
|
|
|
|
boot_mode = readl(reg);
|
|
debug("%s: boot mode 0x%08x\n", __func__, boot_mode);
|
|
|
|
/* Clear boot mode */
|
|
writel(BOOT_NORMAL, reg);
|
|
|
|
switch (boot_mode) {
|
|
case BOOT_FASTBOOT:
|
|
debug("%s: enter fastboot!\n", __func__);
|
|
env_set("preboot", "setenv preboot; fastboot usb0");
|
|
break;
|
|
case BOOT_UMS:
|
|
debug("%s: enter UMS!\n", __func__);
|
|
env_set("preboot", "setenv preboot; ums mmc 0");
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|