u-boot/board/freescale/ls1021atsn/ls1021atsn.c

// SPDX-License-Identifier: GPL-2.0
/* Copyright 2016-2019, 2021 NXP
 */
#include <common.h>
#include <clock_legacy.h>
#include <fdt_support.h>
#include <init.h>
#include <net.h>
#include <asm/arch-ls102xa/ls102xa_soc.h>
#include <asm/arch/ls102xa_devdis.h>
#include <asm/arch/immap_ls102xa.h>
#include <asm/arch/ls102xa_soc.h>
#include <asm/arch/fsl_serdes.h>
#include <asm/global_data.h>
#include <asm/sections.h>
#include <linux/delay.h>
#include "../common/sleep.h"
#include <fsl_validate.h>
#include <fsl_immap.h>
#include <fsl_csu.h>
#include <netdev.h>
#include <spl.h>
#ifdef CONFIG_U_QE
#include <fsl_qe.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

static void ddrmc_init(void)
{
#if (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD))
	struct ccsr_ddr *ddr = (struct ccsr_ddr *)CFG_SYS_FSL_DDR_ADDR;
	u32 temp_sdram_cfg, tmp;

	out_be32(&ddr->sdram_cfg, DDR_SDRAM_CFG);

	out_be32(&ddr->cs0_bnds, DDR_CS0_BNDS);
	out_be32(&ddr->cs0_config, DDR_CS0_CONFIG);

	out_be32(&ddr->timing_cfg_0, DDR_TIMING_CFG_0);
	out_be32(&ddr->timing_cfg_1, DDR_TIMING_CFG_1);
	out_be32(&ddr->timing_cfg_2, DDR_TIMING_CFG_2);
	out_be32(&ddr->timing_cfg_3, DDR_TIMING_CFG_3);
	out_be32(&ddr->timing_cfg_4, DDR_TIMING_CFG_4);
	out_be32(&ddr->timing_cfg_5, DDR_TIMING_CFG_5);

#ifdef CONFIG_DEEP_SLEEP
	if (is_warm_boot()) {
		out_be32(&ddr->sdram_cfg_2,
			 DDR_SDRAM_CFG_2 & ~SDRAM_CFG2_D_INIT);
		out_be32(&ddr->init_addr, CFG_SYS_SDRAM_BASE);
		out_be32(&ddr->init_ext_addr, (1 << 31));

		/* DRAM VRef will not be trained */
		out_be32(&ddr->ddr_cdr2,
			 DDR_DDR_CDR2 & ~DDR_CDR2_VREF_TRAIN_EN);
	} else
#endif
	{
		out_be32(&ddr->sdram_cfg_2, DDR_SDRAM_CFG_2);
		out_be32(&ddr->ddr_cdr2, DDR_DDR_CDR2);
	}

	out_be32(&ddr->sdram_mode, DDR_SDRAM_MODE);
	out_be32(&ddr->sdram_mode_2, DDR_SDRAM_MODE_2);

	out_be32(&ddr->sdram_interval, DDR_SDRAM_INTERVAL);

	out_be32(&ddr->ddr_wrlvl_cntl, DDR_DDR_WRLVL_CNTL);

	out_be32(&ddr->ddr_wrlvl_cntl_2, DDR_DDR_WRLVL_CNTL_2);
	out_be32(&ddr->ddr_wrlvl_cntl_3, DDR_DDR_WRLVL_CNTL_3);

	out_be32(&ddr->ddr_cdr1, DDR_DDR_CDR1);

	out_be32(&ddr->sdram_clk_cntl, DDR_SDRAM_CLK_CNTL);
	out_be32(&ddr->ddr_zq_cntl, DDR_DDR_ZQ_CNTL);

	out_be32(&ddr->cs0_config_2, DDR_CS0_CONFIG_2);

	/* DDR erratum A-009942 */
	tmp = in_be32(&ddr->debug[28]);
	out_be32(&ddr->debug[28], tmp | 0x0070006f);

	udelay(1);

#ifdef CONFIG_DEEP_SLEEP
	if (is_warm_boot()) {
		/* enter self-refresh */
		temp_sdram_cfg = in_be32(&ddr->sdram_cfg_2);
		temp_sdram_cfg |= SDRAM_CFG2_FRC_SR;
		out_be32(&ddr->sdram_cfg_2, temp_sdram_cfg);

		temp_sdram_cfg = (DDR_SDRAM_CFG_MEM_EN | SDRAM_CFG_BI);
	} else
#endif
		temp_sdram_cfg = (DDR_SDRAM_CFG_MEM_EN & ~SDRAM_CFG_BI);

	out_be32(&ddr->sdram_cfg, DDR_SDRAM_CFG | temp_sdram_cfg);

#ifdef CONFIG_DEEP_SLEEP
	if (is_warm_boot()) {
		/* exit self-refresh */
		temp_sdram_cfg = in_be32(&ddr->sdram_cfg_2);
		temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR;
		out_be32(&ddr->sdram_cfg_2, temp_sdram_cfg);
	}
#endif
#endif /* !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD) */
}

int dram_init(void)
{
	ddrmc_init();

	erratum_a008850_post();

	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);

#if defined(CONFIG_DEEP_SLEEP) && !defined(CONFIG_SPL_BUILD)
	fsl_dp_resume();
#endif

	return 0;
}

int board_eth_init(struct bd_info *bis)
{
	return pci_eth_init(bis);
}

int board_early_init_f(void)
{
	struct ccsr_scfg *scfg = (struct ccsr_scfg *)CFG_SYS_FSL_SCFG_ADDR;

#ifdef CONFIG_TSEC_ENET
	/*
	 * Clear BD & FR bits for big endian BD's and frame data (aka set
	 * correct eTSEC endianness). This is crucial in ensuring that it does
	 * not report Data Parity Errors in its RX/TX FIFOs when attempting to
	 * send traffic.
	 */
	clrbits_be32(&scfg->etsecdmamcr, SCFG_ETSECDMAMCR_LE_BD_FR);
	/* EC3_GTX_CLK125 (of enet2) used for all RGMII interfaces */
	out_be32(&scfg->etsecmcr, SCFG_ETSECCMCR_GE2_CLK125);
#endif

	arch_soc_init();

#if defined(CONFIG_DEEP_SLEEP)
	if (is_warm_boot()) {
		timer_init();
		dram_init();
	}
#endif

	return 0;
}

#ifdef CONFIG_SPL_BUILD
void board_init_f(ulong dummy)
{
	void (*second_uboot)(void);

	/* Clear the BSS */
	memset(__bss_start, 0, __bss_end - __bss_start);

	get_clocks();

#if defined(CONFIG_DEEP_SLEEP)
	if (is_warm_boot())
		fsl_dp_disable_console();
#endif

	preloader_console_init();

	dram_init();

	/* Allow OCRAM access permission as R/W */
#ifdef CONFIG_LAYERSCAPE_NS_ACCESS
	enable_layerscape_ns_access();
	enable_layerscape_ns_access();
#endif

	/*
	 * if it is woken up from deep sleep, then jump to second
	 * stage U-Boot and continue executing without recopying
	 * it from SD since it has already been reserved in memory
	 * in last boot.
	 */
	if (is_warm_boot()) {
		second_uboot = (void (*)(void))CONFIG_TEXT_BASE;
		second_uboot();
	}

	board_init_r(NULL, 0);
}
#endif

int board_init(void)
{
#ifndef CONFIG_SYS_FSL_NO_SERDES
	fsl_serdes_init();
#endif
	ls102xa_smmu_stream_id_init();

#ifdef CONFIG_LAYERSCAPE_NS_ACCESS
	enable_layerscape_ns_access();
#endif

#ifdef CONFIG_U_QE
	u_qe_init();
#endif

	return 0;
}

#if defined(CONFIG_SPL_BUILD)
void spl_board_init(void)
{
	ls102xa_smmu_stream_id_init();
}
#endif

#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
#ifdef CONFIG_CHAIN_OF_TRUST
	fsl_setenv_chain_of_trust();
#endif

	return 0;
}
#endif

#if defined(CONFIG_MISC_INIT_R)
int misc_init_r(void)
{
#ifdef CONFIG_FSL_DEVICE_DISABLE
	device_disable(devdis_tbl, ARRAY_SIZE(devdis_tbl));
#endif
	return 0;
}
#endif

#if defined(CONFIG_DEEP_SLEEP)
void board_sleep_prepare(void)
{
#ifdef CONFIG_LAYERSCAPE_NS_ACCESS
	enable_layerscape_ns_access();
#endif
}
#endif

int ft_board_setup(void *blob, struct bd_info *bd)
{
	ft_cpu_setup(blob, bd);

#ifdef CONFIG_PCI
	ft_pci_setup(blob, bd);
#endif

	return 0;
}