u-boot/arch/arm/mach-rockchip/rk3188-board-spl.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00

223 lines
4.3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
*/
#include <clk.h>
#include <common.h>
#include <debug_uart.h>
#include <dm.h>
#include <fdtdec.h>
#include <led.h>
#include <malloc.h>
#include <ram.h>
#include <spl.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/bootrom.h>
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
#include <asm/arch/periph.h>
#include <asm/arch/pmu_rk3188.h>
#include <asm/arch/sdram.h>
#include <asm/arch/timer.h>
#include <dm/pinctrl.h>
#include <dm/root.h>
#include <dm/test.h>
#include <dm/util.h>
#include <power/regulator.h>
#include <syscon.h>
DECLARE_GLOBAL_DATA_PTR;
u32 spl_boot_device(void)
{
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
const void *blob = gd->fdt_blob;
struct udevice *dev;
const char *bootdev;
int node;
int ret;
bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
debug("Boot device %s\n", bootdev);
if (!bootdev)
goto fallback;
node = fdt_path_offset(blob, bootdev);
if (node < 0) {
debug("node=%d\n", node);
goto fallback;
}
ret = device_get_global_by_of_offset(node, &dev);
if (ret) {
debug("device at node %s/%d not found: %d\n", bootdev, node,
ret);
goto fallback;
}
debug("Found device %s\n", dev->name);
switch (device_get_uclass_id(dev)) {
case UCLASS_SPI_FLASH:
return BOOT_DEVICE_SPI;
case UCLASS_MMC:
return BOOT_DEVICE_MMC1;
default:
debug("Booting from device uclass '%s' not supported\n",
dev_get_uclass_name(dev));
}
fallback:
#endif
return BOOT_DEVICE_MMC1;
}
static int setup_arm_clock(void)
{
struct udevice *dev;
struct clk clk;
int ret;
ret = rockchip_get_clk(&dev);
if (ret)
return ret;
clk.id = CLK_ARM;
ret = clk_request(dev, &clk);
if (ret < 0)
return ret;
ret = clk_set_rate(&clk, 600000000);
clk_free(&clk);
return ret;
}
void board_init_f(ulong dummy)
{
struct udevice *pinctrl, *dev;
int ret;
/* Example code showing how to enable the debug UART on RK3188 */
#ifdef EARLY_UART
#include <asm/arch/grf_rk3188.h>
/* Enable early UART on the RK3188 */
#define GRF_BASE 0x20008000
struct rk3188_grf * const grf = (void *)GRF_BASE;
rk_clrsetreg(&grf->gpio1b_iomux,
GPIO1B1_MASK << GPIO1B1_SHIFT |
GPIO1B0_MASK << GPIO1B0_SHIFT,
GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
/*
* Debug UART can be used from here if required:
*
* debug_uart_init();
* printch('a');
* printhex8(0x1234);
* printascii("string");
*/
debug_uart_init();
printch('s');
printch('p');
printch('l');
printch('\n');
#endif
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
hang();
}
ret = rockchip_get_clk(&dev);
if (ret) {
debug("CLK init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("Pinctrl init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret) {
debug("DRAM init failed: %d\n", ret);
return;
}
setup_arm_clock();
#if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
back_to_bootrom(BROM_BOOT_NEXTSTAGE);
#endif
}
static int setup_led(void)
{
#ifdef CONFIG_SPL_LED
struct udevice *dev;
char *led_name;
int ret;
led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
if (!led_name)
return 0;
ret = led_get_by_label(led_name, &dev);
if (ret) {
debug("%s: get=%d\n", __func__, ret);
return ret;
}
ret = led_set_on(dev, 1);
if (ret)
return ret;
#endif
return 0;
}
void spl_board_init(void)
{
struct udevice *pinctrl;
int ret;
ret = setup_led();
if (ret) {
debug("LED ret=%d\n", ret);
hang();
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("%s: Cannot find pinctrl device\n", __func__);
goto err;
}
#ifdef CONFIG_SPL_MMC_SUPPORT
ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
if (ret) {
debug("%s: Failed to set up SD card\n", __func__);
goto err;
}
#endif
/* Enable debug UART */
ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
if (ret) {
debug("%s: Failed to set up console UART\n", __func__);
goto err;
}
preloader_console_init();
#if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
back_to_bootrom(BROM_BOOT_NEXTSTAGE);
#endif
return;
err:
printf("spl_board_init: Error %d\n", ret);
/* No way to report error here */
hang();
}