u-boot/arch/arm/mach-rockchip/board.c

/*
 * (C) Copyright 2015 Google, Inc
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <clk.h>
#include <dm.h>
#include <ram.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

int board_init(void)
{
	return 0;
}

int dram_init(void)
{
	struct ram_info ram;
	struct udevice *dev;
	int ret;

	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
	if (ret) {
		debug("DRAM init failed: %d\n", ret);
		return ret;
	}
	ret = ram_get_info(dev, &ram);
	if (ret) {
		debug("Cannot get DRAM size: %d\n", ret);
		return ret;
	}
	debug("SDRAM base=%lx, size=%x\n", ram.base, ram.size);
	gd->ram_size = ram.size;

	return 0;
}

#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
	/* Enable D-cache. I-cache is already enabled in start.S */
	dcache_enable();
}
#endif

void lowlevel_init(void)
{
}

static int do_clock(cmd_tbl_t *cmdtp, int flag, int argc,
		       char * const argv[])
{
	struct udevice *dev;

	for (uclass_first_device(UCLASS_CLK, &dev);
	     dev;
	     uclass_next_device(&dev)) {
		ulong rate;

		rate = clk_get_rate(dev);
		printf("%s: %lu\n", dev->name, rate);
	}

	return 0;
}

U_BOOT_CMD(
	clock, 2, 1, do_clock,
	"display information about clocks",
	""
);