drivers/ddr/altera/sdram_arria10.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2017 Intel Corporation <www.intel.com>
  */

 #include <common.h>
 #include <cpu_func.h>
 #include <errno.h>
 #include <fdtdec.h>
 #include <init.h>
 #include <log.h>
 #include <malloc.h>
 #include <wait_bit.h>
 #include <watchdog.h>
 #include <asm/cache.h>
 #include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/arch/fpga_manager.h>
 #include <asm/arch/misc.h>
 #include <asm/arch/reset_manager.h>
 #include <asm/arch/sdram.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>

 DECLARE_GLOBAL_DATA_PTR;

 static void sdram_mmr_init(void);
 static u64 sdram_size_calc(void);

 /* FAWBANK - Number of Bank of a given device involved in the FAW period. */
 #define ARRIA10_SDR_ACTIVATE_FAWBANK	(0x1)

 #define ARRIA_DDR_CONFIG(A, B, C, R) \
 	(((A) << 24) | ((B) << 16) | ((C) << 8) | (R))
 #define DDR_CONFIG_ELEMENTS	ARRAY_SIZE(ddr_config)
 #define DDR_REG_SEQ2CORE        0xFFD0507C
 #define DDR_REG_CORE2SEQ        0xFFD05078
 #define DDR_READ_LATENCY_DELAY	40
 #define DDR_SIZE_2GB_HEX	0x80000000

 #define IO48_MMR_DRAMSTS	0xFFCFA0EC
 #define IO48_MMR_NIOS2_RESERVE0	0xFFCFA110
 #define IO48_MMR_NIOS2_RESERVE1	0xFFCFA114
 #define IO48_MMR_NIOS2_RESERVE2	0xFFCFA118

 #define SEQ2CORE_MASK		0xF
 #define CORE2SEQ_INT_REQ	0xF
 #define SEQ2CORE_INT_RESP_BIT	3

 static const struct socfpga_ecc_hmc *socfpga_ecc_hmc_base =
 		(void *)SOCFPGA_SDR_ADDRESS;
 static const struct socfpga_noc_ddr_scheduler *socfpga_noc_ddr_scheduler_base =
 		(void *)SOCFPGA_SDR_SCHEDULER_ADDRESS;
 static const struct socfpga_noc_fw_ddr_mpu_fpga2sdram
 		*socfpga_noc_fw_ddr_mpu_fpga2sdram_base =
 		(void *)SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS;
 static const struct socfpga_noc_fw_ddr_l3 *socfpga_noc_fw_ddr_l3_base =
 		(void *)SOCFPGA_SDR_FIREWALL_L3_ADDRESS;
 static const struct socfpga_io48_mmr *socfpga_io48_mmr_base =
 		(void *)SOCFPGA_HMC_MMR_IO48_ADDRESS;

 /* The following are the supported configurations */
 static u32 ddr_config[] = {
 	/* Chip - Row - Bank - Column Style */
 	/* All Types */
 	ARRIA_DDR_CONFIG(0, 3, 10, 12),
 	ARRIA_DDR_CONFIG(0, 3, 10, 13),
 	ARRIA_DDR_CONFIG(0, 3, 10, 14),
 	ARRIA_DDR_CONFIG(0, 3, 10, 15),
 	ARRIA_DDR_CONFIG(0, 3, 10, 16),
 	ARRIA_DDR_CONFIG(0, 3, 10, 17),
 	/* LPDDR x16 */
 	ARRIA_DDR_CONFIG(0, 3, 11, 14),
 	ARRIA_DDR_CONFIG(0, 3, 11, 15),
 	ARRIA_DDR_CONFIG(0, 3, 11, 16),
 	ARRIA_DDR_CONFIG(0, 3, 12, 15),
 	/* DDR4 Only */
 	ARRIA_DDR_CONFIG(0, 4, 10, 14),
 	ARRIA_DDR_CONFIG(0, 4, 10, 15),
 	ARRIA_DDR_CONFIG(0, 4, 10, 16),
 	ARRIA_DDR_CONFIG(0, 4, 10, 17),	/* 14 */
 	/* Chip - Bank - Row - Column Style */
 	ARRIA_DDR_CONFIG(1, 3, 10, 12),
 	ARRIA_DDR_CONFIG(1, 3, 10, 13),
 	ARRIA_DDR_CONFIG(1, 3, 10, 14),
 	ARRIA_DDR_CONFIG(1, 3, 10, 15),
 	ARRIA_DDR_CONFIG(1, 3, 10, 16),
 	ARRIA_DDR_CONFIG(1, 3, 10, 17),
 	ARRIA_DDR_CONFIG(1, 3, 11, 14),
 	ARRIA_DDR_CONFIG(1, 3, 11, 15),
 	ARRIA_DDR_CONFIG(1, 3, 11, 16),
 	ARRIA_DDR_CONFIG(1, 3, 12, 15),
 	/* DDR4 Only */
 	ARRIA_DDR_CONFIG(1, 4, 10, 14),
 	ARRIA_DDR_CONFIG(1, 4, 10, 15),
 	ARRIA_DDR_CONFIG(1, 4, 10, 16),
 	ARRIA_DDR_CONFIG(1, 4, 10, 17),
 };

 static int match_ddr_conf(u32 ddr_conf)
 {
 	int i;

 	for (i = 0; i < DDR_CONFIG_ELEMENTS; i++) {
 		if (ddr_conf == ddr_config[i])
 			return i;
 	}
 	return 0;
 }

 static int emif_clear(void)
 {
 	writel(0, DDR_REG_CORE2SEQ);

 	return wait_for_bit_le32((u32 *)DDR_REG_SEQ2CORE,
 				SEQ2CORE_MASK, 0, 1000, 0);
 }

 static int emif_reset(void)
 {
 	u32 c2s, s2c;
 	int ret;

 	c2s = readl(DDR_REG_CORE2SEQ);
 	s2c = readl(DDR_REG_SEQ2CORE);

 	debug("c2s=%08x s2c=%08x nr0=%08x nr1=%08x nr2=%08x dst=%08x\n",
 	     c2s, s2c, readl(IO48_MMR_NIOS2_RESERVE0),
 	     readl(IO48_MMR_NIOS2_RESERVE1),
 	     readl(IO48_MMR_NIOS2_RESERVE2),
 	     readl(IO48_MMR_DRAMSTS));

 	if (s2c & SEQ2CORE_MASK) {
 		ret = emif_clear();
 		if (ret) {
 			debug("failed emif_clear()\n");
 			return -EPERM;
 		}
 	}

 	writel(CORE2SEQ_INT_REQ, DDR_REG_CORE2SEQ);

 	ret = wait_for_bit_le32((u32 *)DDR_REG_SEQ2CORE,
 				SEQ2CORE_INT_RESP_BIT, false, 1000, false);
 	if (ret) {
 		debug("emif_reset failed to see interrupt acknowledge\n");
 		emif_clear();
 		return ret;
 	}

 	mdelay(1);

 	ret = emif_clear();
 	if (ret) {
 		debug("emif_clear() failed\n");
 		return -EPERM;
 	}
 	debug("emif_reset interrupt cleared\n");

 	debug("nr0=%08x nr1=%08x nr2=%08x\n",
 	     readl(IO48_MMR_NIOS2_RESERVE0),
 	     readl(IO48_MMR_NIOS2_RESERVE1),
 	     readl(IO48_MMR_NIOS2_RESERVE2));

 	return 0;
 }

 static int ddr_setup(void)
 {
 	int i, ret;

 	/* Try 32 times to do a calibration */
 	for (i = 0; i < 32; i++) {
 		mdelay(500);
 		ret = wait_for_bit_le32(&socfpga_ecc_hmc_base->ddrcalstat,
 					BIT(0), true, 500, false);
 		if (!ret)
 			return 0;

 		ret = emif_reset();
 		if (ret)
 			puts("Error: Failed to reset EMIF\n");
 	}

 	puts("Error: Could Not Calibrate SDRAM\n");
 	return -EPERM;
 }

 static int sdram_is_ecc_enabled(void)
 {
 	return !!(readl(&socfpga_ecc_hmc_base->eccctrl) &
 		  ALT_ECC_HMC_OCP_ECCCTL_ECC_EN_SET_MSK);
 }

 /* Initialize SDRAM ECC bits to avoid false DBE */
 static void sdram_init_ecc_bits(u32 size)
 {
 	icache_enable();

 	memset(0, 0, 0x8000);
 	gd->arch.tlb_addr = 0x4000;
 	gd->arch.tlb_size = PGTABLE_SIZE;

 	dcache_enable();

 	printf("DDRCAL: Scrubbing ECC RAM (%i MiB).\n", size >> 20);
 	memset((void *)0x8000, 0, size - 0x8000);
 	flush_dcache_all();
 	printf("DDRCAL: Scrubbing ECC RAM done.\n");
 	dcache_disable();
 }

 /* Function to startup the SDRAM*/
 static int sdram_startup(void)
 {
 	/* Release NOC ddr scheduler from reset */
 	socfpga_reset_deassert_noc_ddr_scheduler();

 	/* Bringup the DDR (calibration and configuration) */
 	return ddr_setup();
 }

 static u64 sdram_size_calc(void)
 {
 	u32 dramaddrw = readl(&socfpga_io48_mmr_base->dramaddrw);

 	u64 size = BIT(((dramaddrw &
 		IO48_MMR_DRAMADDRW_CFG_CS_ADDR_WIDTH_MASK) >>
 		IO48_MMR_DRAMADDRW_CFG_CS_ADDR_WIDTH_SHIFT) +
 		((dramaddrw &
 		IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_MASK) >>
 		IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_SHIFT) +
 		((dramaddrw &
 		IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_MASK) >>
 		IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_SHIFT) +
 		((dramaddrw &
 		IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_MASK) >>
 		IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_SHIFT) +
 		(dramaddrw & IO48_MMR_DRAMADDRW_CFG_COL_ADDR_WIDTH_MASK));

 	size *= (2 << (readl(&socfpga_ecc_hmc_base->ddrioctrl) &
 		       ALT_ECC_HMC_OCP_DDRIOCTRL_IO_SIZE_MSK));

 	debug("SDRAM size=%llu\n", size);

 	return size;
 }

 /* Function to initialize SDRAM MMR and NOC DDR scheduler*/
 static void sdram_mmr_init(void)
 {
 	u32 update_value, io48_value;
 	u32 ctrlcfg0 = readl(&socfpga_io48_mmr_base->ctrlcfg0);
 	u32 ctrlcfg1 = readl(&socfpga_io48_mmr_base->ctrlcfg1);
 	u32 dramaddrw = readl(&socfpga_io48_mmr_base->dramaddrw);
 	u32 caltim0 = readl(&socfpga_io48_mmr_base->caltiming0);
 	u32 caltim1 = readl(&socfpga_io48_mmr_base->caltiming1);
 	u32 caltim2 = readl(&socfpga_io48_mmr_base->caltiming2);
 	u32 caltim3 = readl(&socfpga_io48_mmr_base->caltiming3);
 	u32 caltim4 = readl(&socfpga_io48_mmr_base->caltiming4);
 	u32 caltim9 = readl(&socfpga_io48_mmr_base->caltiming9);
 	u32 ddrioctl;

 	/*
 	 * Configure the DDR IO size [0xFFCFB008]
 	 * niosreserve0: Used to indicate DDR width &
 	 *	bit[7:0] = Number of data bits (0x20 for 32bit)
 	 *	bit[8]   = 1 if user-mode OCT is present
 	 *	bit[9]   = 1 if warm reset compiled into EMIF Cal Code
 	 *	bit[10]  = 1 if warm reset is on during generation in EMIF Cal
 	 * niosreserve1: IP ADCDS version encoded as 16 bit value
 	 *	bit[2:0] = Variant (0=not special,1=FAE beta, 2=Customer beta,
 	 *			    3=EAP, 4-6 are reserved)
 	 *	bit[5:3] = Service Pack # (e.g. 1)
 	 *	bit[9:6] = Minor Release #
 	 *	bit[14:10] = Major Release #
 	 */
 	if ((readl(&socfpga_io48_mmr_base->niosreserve1) >> 6) & 0x1FF) {
 		update_value = readl(&socfpga_io48_mmr_base->niosreserve0);
 		writel(((update_value & 0xFF) >> 5),
 		       &socfpga_ecc_hmc_base->ddrioctrl);
 	}

 	ddrioctl = readl(&socfpga_ecc_hmc_base->ddrioctrl);

 	/* Set the DDR Configuration [0xFFD12400] */
 	io48_value = ARRIA_DDR_CONFIG(
 			((ctrlcfg1 &
 			IO48_MMR_CTRLCFG1_ADDR_ORDER_MASK) >>
 			IO48_MMR_CTRLCFG1_ADDR_ORDER_SHIFT),
 			((dramaddrw &
 			IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_MASK) >>
 			IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_SHIFT) +
 			((dramaddrw &
 			IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_MASK) >>
 			IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_SHIFT),
 			(dramaddrw &
 			IO48_MMR_DRAMADDRW_CFG_COL_ADDR_WIDTH_MASK),
 			((dramaddrw &
 			IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_MASK) >>
 			IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_SHIFT));

 	update_value = match_ddr_conf(io48_value);
 	if (update_value)
 		writel(update_value,
 		&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_ddrconf);

 	/*
 	 * Configure DDR timing [0xFFD1240C]
 	 *  RDTOMISS = tRTP + tRP + tRCD - BL/2
 	 *  WRTOMISS = WL + tWR + tRP + tRCD and
 	 *    WL = RL + BL/2 + 2 - rd-to-wr ; tWR = 15ns  so...
 	 *  First part of equation is in memory clock units so divide by 2
 	 *  for HMC clock units. 1066MHz is close to 1ns so use 15 directly.
 	 *  WRTOMISS = ((RL + BL/2 + 2 + tWR) >> 1)- rd-to-wr + tRP + tRCD
 	 */
 	u32 ctrlcfg0_cfg_ctrl_burst_len =
 		(ctrlcfg0 & IO48_MMR_CTRLCFG0_CTRL_BURST_LENGTH_MASK) >>
 		IO48_MMR_CTRLCFG0_CTRL_BURST_LENGTH_SHIFT;

 	u32 caltim0_cfg_act_to_rdwr = caltim0 &
 		IO48_MMR_CALTIMING0_CFG_ACT_TO_RDWR_MASK;

 	u32 caltim0_cfg_act_to_act =
 		(caltim0 & IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_MASK) >>
 		IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_SHIFT;

 	u32 caltim0_cfg_act_to_act_db =
 		(caltim0 &
 		IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_DIFF_BANK_MASK) >>
 		IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_DIFF_BANK_SHIFT;

 	u32 caltim1_cfg_rd_to_wr =
 		(caltim1 & IO48_MMR_CALTIMING1_CFG_RD_TO_WR_MASK) >>
 		IO48_MMR_CALTIMING1_CFG_RD_TO_WR_SHIFT;

 	u32 caltim1_cfg_rd_to_rd_dc =
 		(caltim1 & IO48_MMR_CALTIMING1_CFG_RD_TO_RD_DC_MASK) >>
 		IO48_MMR_CALTIMING1_CFG_RD_TO_RD_DC_SHIFT;

 	u32 caltim1_cfg_rd_to_wr_dc =
 		(caltim1 & IO48_MMR_CALTIMING1_CFG_RD_TO_WR_DIFF_CHIP_MASK) >>
 		IO48_MMR_CALTIMING1_CFG_RD_TO_WR_DIFF_CHIP_SHIFT;

 	u32 caltim2_cfg_rd_to_pch =
 		(caltim2 & IO48_MMR_CALTIMING2_CFG_RD_TO_PCH_MASK) >>
 		IO48_MMR_CALTIMING2_CFG_RD_TO_PCH_SHIFT;

 	u32 caltim3_cfg_wr_to_rd =
 		(caltim3 & IO48_MMR_CALTIMING3_CFG_WR_TO_RD_MASK) >>
 		IO48_MMR_CALTIMING3_CFG_WR_TO_RD_SHIFT;

 	u32 caltim3_cfg_wr_to_rd_dc =
 		(caltim3 & IO48_MMR_CALTIMING3_CFG_WR_TO_RD_DIFF_CHIP_MASK) >>
 		IO48_MMR_CALTIMING3_CFG_WR_TO_RD_DIFF_CHIP_SHIFT;

 	u32 caltim4_cfg_pch_to_valid =
 		(caltim4 & IO48_MMR_CALTIMING4_CFG_PCH_TO_VALID_MASK) >>
 		IO48_MMR_CALTIMING4_CFG_PCH_TO_VALID_SHIFT;

 	u32 caltim9_cfg_4_act_to_act = caltim9 &
 		IO48_MMR_CALTIMING9_CFG_WR_4_ACT_TO_ACT_MASK;

 	update_value = (caltim2_cfg_rd_to_pch +  caltim4_cfg_pch_to_valid +
 			caltim0_cfg_act_to_rdwr -
 			(ctrlcfg0_cfg_ctrl_burst_len >> 2));

 	io48_value = ((((readl(&socfpga_io48_mmr_base->dramtiming0) &
 		      ALT_IO48_DRAMTIME_MEM_READ_LATENCY_MASK) + 2 + 15 +
 		      (ctrlcfg0_cfg_ctrl_burst_len >> 1)) >> 1) -
 		      /* Up to here was in memory cycles so divide by 2 */
 		      caltim1_cfg_rd_to_wr + caltim0_cfg_act_to_rdwr +
 		      caltim4_cfg_pch_to_valid);

 	writel(((caltim0_cfg_act_to_act <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_ACTTOACT_LSB) |
 		(update_value <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_RDTOMISS_LSB) |
 		(io48_value <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_WRTOMISS_LSB) |
 		((ctrlcfg0_cfg_ctrl_burst_len >> 2) <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_BURSTLEN_LSB) |
 		(caltim1_cfg_rd_to_wr <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_RDTOWR_LSB) |
 		(caltim3_cfg_wr_to_rd <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_WRTORD_LSB) |
 		(((ddrioctl == 1) ? 1 : 0) <<
 			ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_BWRATIO_LSB)),
 		&socfpga_noc_ddr_scheduler_base->
 			ddr_t_main_scheduler_ddrtiming);

 	/* Configure DDR mode [0xFFD12410] [precharge = 0] */
 	writel(((ddrioctl ? 0 : 1) <<
 		ALT_NOC_MPU_DDR_T_SCHED_DDRMOD_BWRATIOEXTENDED_LSB),
 		&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_ddrmode);

 	/* Configure the read latency [0xFFD12414] */
 	writel(((readl(&socfpga_io48_mmr_base->dramtiming0) &
 		ALT_IO48_DRAMTIME_MEM_READ_LATENCY_MASK) >> 1) +
 		DDR_READ_LATENCY_DELAY,
 		&socfpga_noc_ddr_scheduler_base->
 			ddr_t_main_scheduler_readlatency);

 	/*
 	 * Configuring timing values concerning activate commands
 	 * [0xFFD12438] [FAWBANK alway 1 because always 4 bank DDR]
 	 */
 	writel(((caltim0_cfg_act_to_act_db <<
 			ALT_NOC_MPU_DDR_T_SCHED_ACTIVATE_RRD_LSB) |
 		(caltim9_cfg_4_act_to_act <<
 			ALT_NOC_MPU_DDR_T_SCHED_ACTIVATE_FAW_LSB) |
 		(ARRIA10_SDR_ACTIVATE_FAWBANK <<
 			ALT_NOC_MPU_DDR_T_SCHED_ACTIVATE_FAWBANK_LSB)),
 		&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_activate);

 	/*
 	 * Configuring timing values concerning device to device data bus
 	 * ownership change [0xFFD1243C]
 	 */
 	writel(((caltim1_cfg_rd_to_rd_dc <<
 			ALT_NOC_MPU_DDR_T_SCHED_DEVTODEV_BUSRDTORD_LSB) |
 		(caltim1_cfg_rd_to_wr_dc <<
 			ALT_NOC_MPU_DDR_T_SCHED_DEVTODEV_BUSRDTOWR_LSB) |
 		(caltim3_cfg_wr_to_rd_dc <<
 			ALT_NOC_MPU_DDR_T_SCHED_DEVTODEV_BUSWRTORD_LSB)),
 		&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_devtodev);

 	/* Enable or disable the SDRAM ECC */
 	if (ctrlcfg1 & IO48_MMR_CTRLCFG1_CTRL_ENABLE_ECC) {
 		setbits_le32(&socfpga_ecc_hmc_base->eccctrl,
 			     (ALT_ECC_HMC_OCP_ECCCTL_AWB_CNT_RST_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL_CNT_RST_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL_ECC_EN_SET_MSK));
 		clrbits_le32(&socfpga_ecc_hmc_base->eccctrl,
 			     (ALT_ECC_HMC_OCP_ECCCTL_AWB_CNT_RST_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL_CNT_RST_SET_MSK));
 		setbits_le32(&socfpga_ecc_hmc_base->eccctrl2,
 			     (ALT_ECC_HMC_OCP_ECCCTL2_RMW_EN_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL2_AWB_EN_SET_MSK));
 	} else {
 		clrbits_le32(&socfpga_ecc_hmc_base->eccctrl,
 			     (ALT_ECC_HMC_OCP_ECCCTL_AWB_CNT_RST_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL_CNT_RST_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL_ECC_EN_SET_MSK));
 		clrbits_le32(&socfpga_ecc_hmc_base->eccctrl2,
 			     (ALT_ECC_HMC_OCP_ECCCTL2_RMW_EN_SET_MSK |
 			      ALT_ECC_HMC_OCP_ECCCTL2_AWB_EN_SET_MSK));
 	}
 }

 struct firewall_entry {
 	const char *prop_name;
 	const u32 cfg_addr;
 	const u32 en_addr;
 	const u32 en_bit;
 };
 #define FW_MPU_FPGA_ADDRESS \
 	((const struct socfpga_noc_fw_ddr_mpu_fpga2sdram *)\
 	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS)

 #define SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(ADDR) \
 		(SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS + \
 		offsetof(struct socfpga_noc_fw_ddr_mpu_fpga2sdram, ADDR))

 #define SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(ADDR) \
 		(SOCFPGA_SDR_FIREWALL_L3_ADDRESS + \
 		offsetof(struct socfpga_noc_fw_ddr_l3, ADDR))

 const struct firewall_entry firewall_table[] = {
 	{
 		"mpu0",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion0addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_MPUREG0EN_SET_MSK
 	},
 	{
 		"mpu1",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS +
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion1addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_MPUREG1EN_SET_MSK
 	},
 	{
 		"mpu2",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion2addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_MPUREG2EN_SET_MSK
 	},
 	{
 		"mpu3",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion3addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_MPUREG3EN_SET_MSK
 	},
 	{
 		"l3-0",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion0addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG0EN_SET_MSK
 	},
 	{
 		"l3-1",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion1addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG1EN_SET_MSK
 	},
 	{
 		"l3-2",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion2addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG2EN_SET_MSK
 	},
 	{
 		"l3-3",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion3addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG3EN_SET_MSK
 	},
 	{
 		"l3-4",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion4addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG4EN_SET_MSK
 	},
 	{
 		"l3-5",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion5addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG5EN_SET_MSK
 	},
 	{
 		"l3-6",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion6addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG6EN_SET_MSK
 	},
 	{
 		"l3-7",
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion7addr),
 		SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_HPSREG7EN_SET_MSK
 	},
 	{
 		"fpga2sdram0-0",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram0region0addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG0EN_SET_MSK
 	},
 	{
 		"fpga2sdram0-1",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram0region1addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG1EN_SET_MSK
 	},
 	{
 		"fpga2sdram0-2",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram0region2addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG2EN_SET_MSK
 	},
 	{
 		"fpga2sdram0-3",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram0region3addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG3EN_SET_MSK
 	},
 	{
 		"fpga2sdram1-0",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram1region0addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG0EN_SET_MSK
 	},
 	{
 		"fpga2sdram1-1",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram1region1addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG1EN_SET_MSK
 	},
 	{
 		"fpga2sdram1-2",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram1region2addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG2EN_SET_MSK
 	},
 	{
 		"fpga2sdram1-3",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram1region3addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG3EN_SET_MSK
 	},
 	{
 		"fpga2sdram2-0",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram2region0addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG0EN_SET_MSK
 	},
 	{
 		"fpga2sdram2-1",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram2region1addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG1EN_SET_MSK
 	},
 	{
 		"fpga2sdram2-2",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram2region2addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG2EN_SET_MSK
 	},
 	{
 		"fpga2sdram2-3",
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
 		(fpga2sdram2region3addr),
 		SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
 		ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG3EN_SET_MSK
 	},

 };

 static int of_sdram_firewall_setup(const void *blob)
 {
 	int child, i, node, ret;
 	u32 start_end[2];
 	char name[32];

 	node = fdtdec_next_compatible(blob, 0, COMPAT_ALTERA_SOCFPGA_NOC);
 	if (node < 0)
 		return -ENXIO;

 	child = fdt_first_subnode(blob, node);
 	if (child < 0)
 		return -ENXIO;

 	/* set to default state */
 	writel(0, &socfpga_noc_fw_ddr_mpu_fpga2sdram_base->enable);
 	writel(0, &socfpga_noc_fw_ddr_l3_base->enable);


 	for (i = 0; i < ARRAY_SIZE(firewall_table); i++) {
 		sprintf(name, "%s", firewall_table[i].prop_name);
 		ret = fdtdec_get_int_array(blob, child, name,
 					   start_end, 2);
 		if (ret) {
 			sprintf(name, "altr,%s", firewall_table[i].prop_name);
 			ret = fdtdec_get_int_array(blob, child, name,
 						   start_end, 2);
 			if (ret)
 				continue;
 		}

 		writel((start_end[0] & ALT_NOC_FW_DDR_ADDR_MASK) |
 		       (start_end[1] << ALT_NOC_FW_DDR_END_ADDR_LSB),
 		       firewall_table[i].cfg_addr);
 		setbits_le32(firewall_table[i].en_addr,
 			     firewall_table[i].en_bit);
 	}

 	return 0;
 }

 int ddr_calibration_sequence(void)
 {
 	schedule();

 	/* Check to see if SDRAM cal was success */
 	if (sdram_startup()) {
 		puts("DDRCAL: Failed\n");
 		return -EPERM;
 	}

 	puts("DDRCAL: Success\n");

 	schedule();

 	/* initialize the MMR register */
 	sdram_mmr_init();

 	/* assigning the SDRAM size */
 	u64 size = sdram_size_calc();

 	/*
 	 * If size is less than zero, this is invalid/weird value from
 	 * calculation, use default Config size.
 	 * Up to 2GB is supported, 2GB would be used if more than that.
 	 */
 	if (size <= 0)
 		gd->ram_size = PHYS_SDRAM_1_SIZE;
 	else if (DDR_SIZE_2GB_HEX <= size)
 		gd->ram_size = DDR_SIZE_2GB_HEX;
 	else
 		gd->ram_size = (u32)size;

 	/* setup the dram info within bd */
 	dram_init_banksize();

 	if (of_sdram_firewall_setup(gd->fdt_blob))
 		puts("FW: Error Configuring Firewall\n");

 	if (sdram_is_ecc_enabled())
 		sdram_init_ecc_bits(gd->ram_size);

 	return 0;
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (C) 2017 Intel Corporation <www.intel.com>
	*/

	#include <common.h>
	#include <cpu_func.h>
	#include <errno.h>
	#include <fdtdec.h>
	#include <init.h>
	#include <log.h>
	#include <malloc.h>
	#include <wait_bit.h>
	#include <watchdog.h>
	#include <asm/cache.h>
	#include <asm/global_data.h>
	#include <asm/io.h>
	#include <asm/arch/fpga_manager.h>
	#include <asm/arch/misc.h>
	#include <asm/arch/reset_manager.h>
	#include <asm/arch/sdram.h>
	#include <linux/bitops.h>
	#include <linux/delay.h>
	#include <linux/kernel.h>

	DECLARE_GLOBAL_DATA_PTR;

	static void sdram_mmr_init(void);
	static u64 sdram_size_calc(void);

	/* FAWBANK - Number of Bank of a given device involved in the FAW period. */
	#define ARRIA10_SDR_ACTIVATE_FAWBANK (0x1)

	#define ARRIA_DDR_CONFIG(A, B, C, R) \
	(((A) << 24) \| ((B) << 16) \| ((C) << 8) \| (R))
	#define DDR_CONFIG_ELEMENTS ARRAY_SIZE(ddr_config)
	#define DDR_REG_SEQ2CORE 0xFFD0507C
	#define DDR_REG_CORE2SEQ 0xFFD05078
	#define DDR_READ_LATENCY_DELAY 40
	#define DDR_SIZE_2GB_HEX 0x80000000

	#define IO48_MMR_DRAMSTS 0xFFCFA0EC
	#define IO48_MMR_NIOS2_RESERVE0 0xFFCFA110
	#define IO48_MMR_NIOS2_RESERVE1 0xFFCFA114
	#define IO48_MMR_NIOS2_RESERVE2 0xFFCFA118

	#define SEQ2CORE_MASK 0xF
	#define CORE2SEQ_INT_REQ 0xF
	#define SEQ2CORE_INT_RESP_BIT 3

	static const struct socfpga_ecc_hmc *socfpga_ecc_hmc_base =
	(void *)SOCFPGA_SDR_ADDRESS;
	static const struct socfpga_noc_ddr_scheduler *socfpga_noc_ddr_scheduler_base =
	(void *)SOCFPGA_SDR_SCHEDULER_ADDRESS;
	static const struct socfpga_noc_fw_ddr_mpu_fpga2sdram
	*socfpga_noc_fw_ddr_mpu_fpga2sdram_base =
	(void *)SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS;
	static const struct socfpga_noc_fw_ddr_l3 *socfpga_noc_fw_ddr_l3_base =
	(void *)SOCFPGA_SDR_FIREWALL_L3_ADDRESS;
	static const struct socfpga_io48_mmr *socfpga_io48_mmr_base =
	(void *)SOCFPGA_HMC_MMR_IO48_ADDRESS;

	/* The following are the supported configurations */
	static u32 ddr_config[] = {
	/* Chip - Row - Bank - Column Style */
	/* All Types */
	ARRIA_DDR_CONFIG(0, 3, 10, 12),
	ARRIA_DDR_CONFIG(0, 3, 10, 13),
	ARRIA_DDR_CONFIG(0, 3, 10, 14),
	ARRIA_DDR_CONFIG(0, 3, 10, 15),
	ARRIA_DDR_CONFIG(0, 3, 10, 16),
	ARRIA_DDR_CONFIG(0, 3, 10, 17),
	/* LPDDR x16 */
	ARRIA_DDR_CONFIG(0, 3, 11, 14),
	ARRIA_DDR_CONFIG(0, 3, 11, 15),
	ARRIA_DDR_CONFIG(0, 3, 11, 16),
	ARRIA_DDR_CONFIG(0, 3, 12, 15),
	/* DDR4 Only */
	ARRIA_DDR_CONFIG(0, 4, 10, 14),
	ARRIA_DDR_CONFIG(0, 4, 10, 15),
	ARRIA_DDR_CONFIG(0, 4, 10, 16),
	ARRIA_DDR_CONFIG(0, 4, 10, 17), /* 14 */
	/* Chip - Bank - Row - Column Style */
	ARRIA_DDR_CONFIG(1, 3, 10, 12),
	ARRIA_DDR_CONFIG(1, 3, 10, 13),
	ARRIA_DDR_CONFIG(1, 3, 10, 14),
	ARRIA_DDR_CONFIG(1, 3, 10, 15),
	ARRIA_DDR_CONFIG(1, 3, 10, 16),
	ARRIA_DDR_CONFIG(1, 3, 10, 17),
	ARRIA_DDR_CONFIG(1, 3, 11, 14),
	ARRIA_DDR_CONFIG(1, 3, 11, 15),
	ARRIA_DDR_CONFIG(1, 3, 11, 16),
	ARRIA_DDR_CONFIG(1, 3, 12, 15),
	/* DDR4 Only */
	ARRIA_DDR_CONFIG(1, 4, 10, 14),
	ARRIA_DDR_CONFIG(1, 4, 10, 15),
	ARRIA_DDR_CONFIG(1, 4, 10, 16),
	ARRIA_DDR_CONFIG(1, 4, 10, 17),
	};

	static int match_ddr_conf(u32 ddr_conf)
	{
	int i;

	for (i = 0; i < DDR_CONFIG_ELEMENTS; i++) {
	if (ddr_conf == ddr_config[i])
	return i;
	}
	return 0;
	}

	static int emif_clear(void)
	{
	writel(0, DDR_REG_CORE2SEQ);

	return wait_for_bit_le32((u32 *)DDR_REG_SEQ2CORE,
	SEQ2CORE_MASK, 0, 1000, 0);
	}

	static int emif_reset(void)
	{
	u32 c2s, s2c;
	int ret;

	c2s = readl(DDR_REG_CORE2SEQ);
	s2c = readl(DDR_REG_SEQ2CORE);

	debug("c2s=%08x s2c=%08x nr0=%08x nr1=%08x nr2=%08x dst=%08x\n",
	c2s, s2c, readl(IO48_MMR_NIOS2_RESERVE0),
	readl(IO48_MMR_NIOS2_RESERVE1),
	readl(IO48_MMR_NIOS2_RESERVE2),
	readl(IO48_MMR_DRAMSTS));

	if (s2c & SEQ2CORE_MASK) {
	ret = emif_clear();
	if (ret) {
	debug("failed emif_clear()\n");
	return -EPERM;
	}
	}

	writel(CORE2SEQ_INT_REQ, DDR_REG_CORE2SEQ);

	ret = wait_for_bit_le32((u32 *)DDR_REG_SEQ2CORE,
	SEQ2CORE_INT_RESP_BIT, false, 1000, false);
	if (ret) {
	debug("emif_reset failed to see interrupt acknowledge\n");
	emif_clear();
	return ret;
	}

	mdelay(1);

	ret = emif_clear();
	if (ret) {
	debug("emif_clear() failed\n");
	return -EPERM;
	}
	debug("emif_reset interrupt cleared\n");

	debug("nr0=%08x nr1=%08x nr2=%08x\n",
	readl(IO48_MMR_NIOS2_RESERVE0),
	readl(IO48_MMR_NIOS2_RESERVE1),
	readl(IO48_MMR_NIOS2_RESERVE2));

	return 0;
	}

	static int ddr_setup(void)
	{
	int i, ret;

	/* Try 32 times to do a calibration */
	for (i = 0; i < 32; i++) {
	mdelay(500);
	ret = wait_for_bit_le32(&socfpga_ecc_hmc_base->ddrcalstat,
	BIT(0), true, 500, false);
	if (!ret)
	return 0;

	ret = emif_reset();
	if (ret)
	puts("Error: Failed to reset EMIF\n");
	}

	puts("Error: Could Not Calibrate SDRAM\n");
	return -EPERM;
	}

	static int sdram_is_ecc_enabled(void)
	{
	return !!(readl(&socfpga_ecc_hmc_base->eccctrl) &
	ALT_ECC_HMC_OCP_ECCCTL_ECC_EN_SET_MSK);
	}

	/* Initialize SDRAM ECC bits to avoid false DBE */
	static void sdram_init_ecc_bits(u32 size)
	{
	icache_enable();

	memset(0, 0, 0x8000);
	gd->arch.tlb_addr = 0x4000;
	gd->arch.tlb_size = PGTABLE_SIZE;

	dcache_enable();

	printf("DDRCAL: Scrubbing ECC RAM (%i MiB).\n", size >> 20);
	memset((void *)0x8000, 0, size - 0x8000);
	flush_dcache_all();
	printf("DDRCAL: Scrubbing ECC RAM done.\n");
	dcache_disable();
	}

	/* Function to startup the SDRAM*/
	static int sdram_startup(void)
	{
	/* Release NOC ddr scheduler from reset */
	socfpga_reset_deassert_noc_ddr_scheduler();

	/* Bringup the DDR (calibration and configuration) */
	return ddr_setup();
	}

	static u64 sdram_size_calc(void)
	{
	u32 dramaddrw = readl(&socfpga_io48_mmr_base->dramaddrw);

	u64 size = BIT(((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_CS_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_CS_ADDR_WIDTH_SHIFT) +
	((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_SHIFT) +
	((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_SHIFT) +
	((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_SHIFT) +
	(dramaddrw & IO48_MMR_DRAMADDRW_CFG_COL_ADDR_WIDTH_MASK));

	size *= (2 << (readl(&socfpga_ecc_hmc_base->ddrioctrl) &
	ALT_ECC_HMC_OCP_DDRIOCTRL_IO_SIZE_MSK));

	debug("SDRAM size=%llu\n", size);

	return size;
	}

	/* Function to initialize SDRAM MMR and NOC DDR scheduler*/
	static void sdram_mmr_init(void)
	{
	u32 update_value, io48_value;
	u32 ctrlcfg0 = readl(&socfpga_io48_mmr_base->ctrlcfg0);
	u32 ctrlcfg1 = readl(&socfpga_io48_mmr_base->ctrlcfg1);
	u32 dramaddrw = readl(&socfpga_io48_mmr_base->dramaddrw);
	u32 caltim0 = readl(&socfpga_io48_mmr_base->caltiming0);
	u32 caltim1 = readl(&socfpga_io48_mmr_base->caltiming1);
	u32 caltim2 = readl(&socfpga_io48_mmr_base->caltiming2);
	u32 caltim3 = readl(&socfpga_io48_mmr_base->caltiming3);
	u32 caltim4 = readl(&socfpga_io48_mmr_base->caltiming4);
	u32 caltim9 = readl(&socfpga_io48_mmr_base->caltiming9);
	u32 ddrioctl;

	/*
	* Configure the DDR IO size [0xFFCFB008]
	* niosreserve0: Used to indicate DDR width &
	* bit[7:0] = Number of data bits (0x20 for 32bit)
	* bit[8] = 1 if user-mode OCT is present
	* bit[9] = 1 if warm reset compiled into EMIF Cal Code
	* bit[10] = 1 if warm reset is on during generation in EMIF Cal
	* niosreserve1: IP ADCDS version encoded as 16 bit value
	* bit[2:0] = Variant (0=not special,1=FAE beta, 2=Customer beta,
	* 3=EAP, 4-6 are reserved)
	* bit[5:3] = Service Pack # (e.g. 1)
	* bit[9:6] = Minor Release #
	* bit[14:10] = Major Release #
	*/
	if ((readl(&socfpga_io48_mmr_base->niosreserve1) >> 6) & 0x1FF) {
	update_value = readl(&socfpga_io48_mmr_base->niosreserve0);
	writel(((update_value & 0xFF) >> 5),
	&socfpga_ecc_hmc_base->ddrioctrl);
	}

	ddrioctl = readl(&socfpga_ecc_hmc_base->ddrioctrl);

	/* Set the DDR Configuration [0xFFD12400] */
	io48_value = ARRIA_DDR_CONFIG(
	((ctrlcfg1 &
	IO48_MMR_CTRLCFG1_ADDR_ORDER_MASK) >>
	IO48_MMR_CTRLCFG1_ADDR_ORDER_SHIFT),
	((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_BANK_ADDR_WIDTH_SHIFT) +
	((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_BANK_GROUP_ADDR_WIDTH_SHIFT),
	(dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_COL_ADDR_WIDTH_MASK),
	((dramaddrw &
	IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_MASK) >>
	IO48_MMR_DRAMADDRW_CFG_ROW_ADDR_WIDTH_SHIFT));

	update_value = match_ddr_conf(io48_value);
	if (update_value)
	writel(update_value,
	&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_ddrconf);

	/*
	* Configure DDR timing [0xFFD1240C]
	* RDTOMISS = tRTP + tRP + tRCD - BL/2
	* WRTOMISS = WL + tWR + tRP + tRCD and
	* WL = RL + BL/2 + 2 - rd-to-wr ; tWR = 15ns so...
	* First part of equation is in memory clock units so divide by 2
	* for HMC clock units. 1066MHz is close to 1ns so use 15 directly.
	* WRTOMISS = ((RL + BL/2 + 2 + tWR) >> 1)- rd-to-wr + tRP + tRCD
	*/
	u32 ctrlcfg0_cfg_ctrl_burst_len =
	(ctrlcfg0 & IO48_MMR_CTRLCFG0_CTRL_BURST_LENGTH_MASK) >>
	IO48_MMR_CTRLCFG0_CTRL_BURST_LENGTH_SHIFT;

	u32 caltim0_cfg_act_to_rdwr = caltim0 &
	IO48_MMR_CALTIMING0_CFG_ACT_TO_RDWR_MASK;

	u32 caltim0_cfg_act_to_act =
	(caltim0 & IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_MASK) >>
	IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_SHIFT;

	u32 caltim0_cfg_act_to_act_db =
	(caltim0 &
	IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_DIFF_BANK_MASK) >>
	IO48_MMR_CALTIMING0_CFG_ACT_TO_ACT_DIFF_BANK_SHIFT;

	u32 caltim1_cfg_rd_to_wr =
	(caltim1 & IO48_MMR_CALTIMING1_CFG_RD_TO_WR_MASK) >>
	IO48_MMR_CALTIMING1_CFG_RD_TO_WR_SHIFT;

	u32 caltim1_cfg_rd_to_rd_dc =
	(caltim1 & IO48_MMR_CALTIMING1_CFG_RD_TO_RD_DC_MASK) >>
	IO48_MMR_CALTIMING1_CFG_RD_TO_RD_DC_SHIFT;

	u32 caltim1_cfg_rd_to_wr_dc =
	(caltim1 & IO48_MMR_CALTIMING1_CFG_RD_TO_WR_DIFF_CHIP_MASK) >>
	IO48_MMR_CALTIMING1_CFG_RD_TO_WR_DIFF_CHIP_SHIFT;

	u32 caltim2_cfg_rd_to_pch =
	(caltim2 & IO48_MMR_CALTIMING2_CFG_RD_TO_PCH_MASK) >>
	IO48_MMR_CALTIMING2_CFG_RD_TO_PCH_SHIFT;

	u32 caltim3_cfg_wr_to_rd =
	(caltim3 & IO48_MMR_CALTIMING3_CFG_WR_TO_RD_MASK) >>
	IO48_MMR_CALTIMING3_CFG_WR_TO_RD_SHIFT;

	u32 caltim3_cfg_wr_to_rd_dc =
	(caltim3 & IO48_MMR_CALTIMING3_CFG_WR_TO_RD_DIFF_CHIP_MASK) >>
	IO48_MMR_CALTIMING3_CFG_WR_TO_RD_DIFF_CHIP_SHIFT;

	u32 caltim4_cfg_pch_to_valid =
	(caltim4 & IO48_MMR_CALTIMING4_CFG_PCH_TO_VALID_MASK) >>
	IO48_MMR_CALTIMING4_CFG_PCH_TO_VALID_SHIFT;

	u32 caltim9_cfg_4_act_to_act = caltim9 &
	IO48_MMR_CALTIMING9_CFG_WR_4_ACT_TO_ACT_MASK;

	update_value = (caltim2_cfg_rd_to_pch + caltim4_cfg_pch_to_valid +
	caltim0_cfg_act_to_rdwr -
	(ctrlcfg0_cfg_ctrl_burst_len >> 2));

	io48_value = ((((readl(&socfpga_io48_mmr_base->dramtiming0) &
	ALT_IO48_DRAMTIME_MEM_READ_LATENCY_MASK) + 2 + 15 +
	(ctrlcfg0_cfg_ctrl_burst_len >> 1)) >> 1) -
	/* Up to here was in memory cycles so divide by 2 */
	caltim1_cfg_rd_to_wr + caltim0_cfg_act_to_rdwr +
	caltim4_cfg_pch_to_valid);

	writel(((caltim0_cfg_act_to_act <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_ACTTOACT_LSB) \|
	(update_value <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_RDTOMISS_LSB) \|
	(io48_value <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_WRTOMISS_LSB) \|
	((ctrlcfg0_cfg_ctrl_burst_len >> 2) <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_BURSTLEN_LSB) \|
	(caltim1_cfg_rd_to_wr <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_RDTOWR_LSB) \|
	(caltim3_cfg_wr_to_rd <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_WRTORD_LSB) \|
	(((ddrioctl == 1) ? 1 : 0) <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRTIMING_BWRATIO_LSB)),
	&socfpga_noc_ddr_scheduler_base->
	ddr_t_main_scheduler_ddrtiming);

	/* Configure DDR mode [0xFFD12410] [precharge = 0] */
	writel(((ddrioctl ? 0 : 1) <<
	ALT_NOC_MPU_DDR_T_SCHED_DDRMOD_BWRATIOEXTENDED_LSB),
	&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_ddrmode);

	/* Configure the read latency [0xFFD12414] */
	writel(((readl(&socfpga_io48_mmr_base->dramtiming0) &
	ALT_IO48_DRAMTIME_MEM_READ_LATENCY_MASK) >> 1) +
	DDR_READ_LATENCY_DELAY,
	&socfpga_noc_ddr_scheduler_base->
	ddr_t_main_scheduler_readlatency);

	/*
	* Configuring timing values concerning activate commands
	* [0xFFD12438] [FAWBANK alway 1 because always 4 bank DDR]
	*/
	writel(((caltim0_cfg_act_to_act_db <<
	ALT_NOC_MPU_DDR_T_SCHED_ACTIVATE_RRD_LSB) \|
	(caltim9_cfg_4_act_to_act <<
	ALT_NOC_MPU_DDR_T_SCHED_ACTIVATE_FAW_LSB) \|
	(ARRIA10_SDR_ACTIVATE_FAWBANK <<
	ALT_NOC_MPU_DDR_T_SCHED_ACTIVATE_FAWBANK_LSB)),
	&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_activate);

	/*
	* Configuring timing values concerning device to device data bus
	* ownership change [0xFFD1243C]
	*/
	writel(((caltim1_cfg_rd_to_rd_dc <<
	ALT_NOC_MPU_DDR_T_SCHED_DEVTODEV_BUSRDTORD_LSB) \|
	(caltim1_cfg_rd_to_wr_dc <<
	ALT_NOC_MPU_DDR_T_SCHED_DEVTODEV_BUSRDTOWR_LSB) \|
	(caltim3_cfg_wr_to_rd_dc <<
	ALT_NOC_MPU_DDR_T_SCHED_DEVTODEV_BUSWRTORD_LSB)),
	&socfpga_noc_ddr_scheduler_base->ddr_t_main_scheduler_devtodev);

	/* Enable or disable the SDRAM ECC */
	if (ctrlcfg1 & IO48_MMR_CTRLCFG1_CTRL_ENABLE_ECC) {
	setbits_le32(&socfpga_ecc_hmc_base->eccctrl,
	(ALT_ECC_HMC_OCP_ECCCTL_AWB_CNT_RST_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL_CNT_RST_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL_ECC_EN_SET_MSK));
	clrbits_le32(&socfpga_ecc_hmc_base->eccctrl,
	(ALT_ECC_HMC_OCP_ECCCTL_AWB_CNT_RST_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL_CNT_RST_SET_MSK));
	setbits_le32(&socfpga_ecc_hmc_base->eccctrl2,
	(ALT_ECC_HMC_OCP_ECCCTL2_RMW_EN_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL2_AWB_EN_SET_MSK));
	} else {
	clrbits_le32(&socfpga_ecc_hmc_base->eccctrl,
	(ALT_ECC_HMC_OCP_ECCCTL_AWB_CNT_RST_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL_CNT_RST_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL_ECC_EN_SET_MSK));
	clrbits_le32(&socfpga_ecc_hmc_base->eccctrl2,
	(ALT_ECC_HMC_OCP_ECCCTL2_RMW_EN_SET_MSK \|
	ALT_ECC_HMC_OCP_ECCCTL2_AWB_EN_SET_MSK));
	}
	}

	struct firewall_entry {
	const char *prop_name;
	const u32 cfg_addr;
	const u32 en_addr;
	const u32 en_bit;
	};
	#define FW_MPU_FPGA_ADDRESS \
	((const struct socfpga_noc_fw_ddr_mpu_fpga2sdram *)\
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS)

	#define SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(ADDR) \
	(SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS + \
	offsetof(struct socfpga_noc_fw_ddr_mpu_fpga2sdram, ADDR))

	#define SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(ADDR) \
	(SOCFPGA_SDR_FIREWALL_L3_ADDRESS + \
	offsetof(struct socfpga_noc_fw_ddr_l3, ADDR))

	const struct firewall_entry firewall_table[] = {
	{
	"mpu0",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion0addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_MPUREG0EN_SET_MSK
	},
	{
	"mpu1",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS +
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion1addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_MPUREG1EN_SET_MSK
	},
	{
	"mpu2",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion2addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_MPUREG2EN_SET_MSK
	},
	{
	"mpu3",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(mpuregion3addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_MPUREG3EN_SET_MSK
	},
	{
	"l3-0",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion0addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG0EN_SET_MSK
	},
	{
	"l3-1",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion1addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG1EN_SET_MSK
	},
	{
	"l3-2",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion2addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG2EN_SET_MSK
	},
	{
	"l3-3",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion3addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG3EN_SET_MSK
	},
	{
	"l3-4",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion4addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG4EN_SET_MSK
	},
	{
	"l3-5",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion5addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG5EN_SET_MSK
	},
	{
	"l3-6",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion6addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG6EN_SET_MSK
	},
	{
	"l3-7",
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(hpsregion7addr),
	SOCFPGA_SDR_FIREWALL_L3_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_HPSREG7EN_SET_MSK
	},
	{
	"fpga2sdram0-0",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram0region0addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG0EN_SET_MSK
	},
	{
	"fpga2sdram0-1",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram0region1addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG1EN_SET_MSK
	},
	{
	"fpga2sdram0-2",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram0region2addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG2EN_SET_MSK
	},
	{
	"fpga2sdram0-3",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram0region3addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR0REG3EN_SET_MSK
	},
	{
	"fpga2sdram1-0",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram1region0addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG0EN_SET_MSK
	},
	{
	"fpga2sdram1-1",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram1region1addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG1EN_SET_MSK
	},
	{
	"fpga2sdram1-2",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram1region2addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG2EN_SET_MSK
	},
	{
	"fpga2sdram1-3",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram1region3addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR1REG3EN_SET_MSK
	},
	{
	"fpga2sdram2-0",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram2region0addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG0EN_SET_MSK
	},
	{
	"fpga2sdram2-1",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram2region1addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG1EN_SET_MSK
	},
	{
	"fpga2sdram2-2",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram2region2addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG2EN_SET_MSK
	},
	{
	"fpga2sdram2-3",
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET
	(fpga2sdram2region3addr),
	SOCFPGA_SDR_FIREWALL_MPU_FPGA_ADDRESS_OFFSET(enable),
	ALT_NOC_FW_DDR_SCR_EN_F2SDR2REG3EN_SET_MSK
	},

	};

	static int of_sdram_firewall_setup(const void *blob)
	{
	int child, i, node, ret;
	u32 start_end[2];
	char name[32];

	node = fdtdec_next_compatible(blob, 0, COMPAT_ALTERA_SOCFPGA_NOC);
	if (node < 0)
	return -ENXIO;

	child = fdt_first_subnode(blob, node);
	if (child < 0)
	return -ENXIO;

	/* set to default state */
	writel(0, &socfpga_noc_fw_ddr_mpu_fpga2sdram_base->enable);
	writel(0, &socfpga_noc_fw_ddr_l3_base->enable);


	for (i = 0; i < ARRAY_SIZE(firewall_table); i++) {
	sprintf(name, "%s", firewall_table[i].prop_name);
	ret = fdtdec_get_int_array(blob, child, name,
	start_end, 2);
	if (ret) {
	sprintf(name, "altr,%s", firewall_table[i].prop_name);
	ret = fdtdec_get_int_array(blob, child, name,
	start_end, 2);
	if (ret)
	continue;
	}

	writel((start_end[0] & ALT_NOC_FW_DDR_ADDR_MASK) \|
	(start_end[1] << ALT_NOC_FW_DDR_END_ADDR_LSB),
	firewall_table[i].cfg_addr);
	setbits_le32(firewall_table[i].en_addr,
	firewall_table[i].en_bit);
	}

	return 0;
	}

	int ddr_calibration_sequence(void)
	{
	schedule();

	/* Check to see if SDRAM cal was success */
	if (sdram_startup()) {
	puts("DDRCAL: Failed\n");
	return -EPERM;
	}

	puts("DDRCAL: Success\n");

	schedule();

	/* initialize the MMR register */
	sdram_mmr_init();

	/* assigning the SDRAM size */
	u64 size = sdram_size_calc();

	/*
	* If size is less than zero, this is invalid/weird value from
	* calculation, use default Config size.
	* Up to 2GB is supported, 2GB would be used if more than that.
	*/
	if (size <= 0)
	gd->ram_size = PHYS_SDRAM_1_SIZE;
	else if (DDR_SIZE_2GB_HEX <= size)
	gd->ram_size = DDR_SIZE_2GB_HEX;
	else
	gd->ram_size = (u32)size;

	/* setup the dram info within bd */
	dram_init_banksize();

	if (of_sdram_firewall_setup(gd->fdt_blob))
	puts("FW: Error Configuring Firewall\n");

	if (sdram_is_ecc_enabled())
	sdram_init_ecc_bits(gd->ram_size);

	return 0;
	}