u-boot/board/ti/am62x/evm.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Board specific initialization for AM62x platforms
 *
 * Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com/
 *	Suman Anna <s-anna@ti.com>
 *
 */

#include <env.h>
#include <spl.h>
#include <video.h>
#include <splash.h>
#include <k3-ddrss.h>
#include <fdt_support.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <dm/uclass.h>

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_SPLASH_SCREEN
static struct splash_location default_splash_locations[] = {
	{
		.name		= "mmc",
		.storage	= SPLASH_STORAGE_MMC,
		.flags		= SPLASH_STORAGE_FS,
		.devpart	= "1:1",
	},
};

int splash_screen_prepare(void)
{
	return splash_source_load(default_splash_locations,
				ARRAY_SIZE(default_splash_locations));
}
#endif

int board_init(void)
{
	return 0;
}

int dram_init(void)
{
	return fdtdec_setup_mem_size_base();
}

int dram_init_banksize(void)
{
	return fdtdec_setup_memory_banksize();
}

#if defined(CONFIG_SPL_BUILD)
#if defined(CONFIG_K3_AM64_DDRSS)
static void fixup_ddr_driver_for_ecc(struct spl_image_info *spl_image)
{
	struct udevice *dev;
	int ret;

	dram_init_banksize();

	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
	if (ret)
		panic("Cannot get RAM device for ddr size fixup: %d\n", ret);

	ret = k3_ddrss_ddr_fdt_fixup(dev, spl_image->fdt_addr, gd->bd);
	if (ret)
		printf("Error fixing up ddr node for ECC use! %d\n", ret);
}
#else
static void fixup_memory_node(struct spl_image_info *spl_image)
{
	u64 start[CONFIG_NR_DRAM_BANKS];
	u64 size[CONFIG_NR_DRAM_BANKS];
	int bank;
	int ret;

	dram_init();
	dram_init_banksize();

	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
		start[bank] =  gd->bd->bi_dram[bank].start;
		size[bank] = gd->bd->bi_dram[bank].size;
	}

	/* dram_init functions use SPL fdt, and we must fixup u-boot fdt */
	ret = fdt_fixup_memory_banks(spl_image->fdt_addr, start, size,
				     CONFIG_NR_DRAM_BANKS);
	if (ret)
		printf("Error fixing up memory node! %d\n", ret);
}
#endif

void spl_perform_fixups(struct spl_image_info *spl_image)
{
#if defined(CONFIG_K3_AM64_DDRSS)
	fixup_ddr_driver_for_ecc(spl_image);
#else
	fixup_memory_node(spl_image);
#endif
}
#endif