mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 03:06:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2016 Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <adc.h>
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#include <asm/io.h>
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#include <asm/arch/boot_mode.h>
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#if (CONFIG_ROCKCHIP_BOOT_MODE_REG == 0)
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int setup_boot_mode(void)
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{
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return 0;
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}
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#else
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void set_back_to_bootrom_dnl_flag(void)
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{
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writel(BOOT_BROM_DOWNLOAD, CONFIG_ROCKCHIP_BOOT_MODE_REG);
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}
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/*
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* detect download key status by adc, most rockchip
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* based boards use adc sample the download key status,
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* but there are also some use gpio. So it's better to
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* make this a weak function that can be override by
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* some special boards.
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*/
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#define KEY_DOWN_MIN_VAL 0
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#define KEY_DOWN_MAX_VAL 30
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__weak int rockchip_dnl_key_pressed(void)
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{
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unsigned int val;
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if (adc_channel_single_shot("saradc", 1, &val)) {
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pr_err("%s: adc_channel_single_shot fail!\n", __func__);
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return false;
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}
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if ((val >= KEY_DOWN_MIN_VAL) && (val <= KEY_DOWN_MAX_VAL))
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return true;
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else
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return false;
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}
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void rockchip_dnl_mode_check(void)
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{
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if (rockchip_dnl_key_pressed()) {
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printf("download key pressed, entering download mode...");
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set_back_to_bootrom_dnl_flag();
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do_reset(NULL, 0, 0, NULL);
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}
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}
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int setup_boot_mode(void)
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{
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void *reg = (void *)CONFIG_ROCKCHIP_BOOT_MODE_REG;
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int boot_mode = readl(reg);
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rockchip_dnl_mode_check();
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boot_mode = readl(reg);
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debug("%s: boot mode 0x%08x\n", __func__, boot_mode);
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/* Clear boot mode */
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writel(BOOT_NORMAL, reg);
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switch (boot_mode) {
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case BOOT_FASTBOOT:
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debug("%s: enter fastboot!\n", __func__);
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env_set("preboot", "setenv preboot; fastboot usb0");
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break;
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case BOOT_UMS:
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debug("%s: enter UMS!\n", __func__);
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env_set("preboot", "setenv preboot; ums mmc 0");
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break;
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}
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return 0;
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}
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#endif
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