[U-Boot] [PATCH v2 12/14] ddr: altera: stratix10: Add DDR support for Stratix10 SoC

chin.liang.see at intel.com chin.liang.see at intel.com
Thu Oct 5 13:07:29 UTC 2017


From: Chin Liang See <chin.liang.see at intel.com>

Add DDR support for Stratix SoC

Signed-off-by: Chin Liang See <chin.liang.see at intel.com>
---
 arch/arm/mach-socfpga/include/mach/sdram_s10.h | 333 +++++++++++++++++++++
 drivers/ddr/altera/Makefile                    |   1 +
 drivers/ddr/altera/sdram_s10.c                 | 382 +++++++++++++++++++++++++
 3 files changed, 716 insertions(+)
 create mode 100644 arch/arm/mach-socfpga/include/mach/sdram_s10.h
 create mode 100644 drivers/ddr/altera/sdram_s10.c

diff --git a/arch/arm/mach-socfpga/include/mach/sdram_s10.h b/arch/arm/mach-socfpga/include/mach/sdram_s10.h
new file mode 100644
index 0000000..d0fd958
--- /dev/null
+++ b/arch/arm/mach-socfpga/include/mach/sdram_s10.h
@@ -0,0 +1,333 @@
+/*
+ * Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef	_SDRAM_S10_H_
+#define	_SDRAM_S10_H_
+
+unsigned long sdram_calculate_size(void);
+int sdram_mmr_init_full(unsigned int sdr_phy_reg);
+int sdram_calibration_full(void);
+
+#define DDR_TWR				15
+#define DDR_READ_LATENCY_DELAY		40
+#define DDR_ACTIVATE_FAWBANK		0x1
+
+
+struct socfpga_ecc_hmc {
+	uint32_t ip_rev_id;
+	uint32_t _pad_0x4_0x7;
+	uint32_t ddrioctrl;
+	uint32_t ddrcalstat;
+	uint32_t mpr_0beat1;
+	uint32_t mpr_1beat1;
+	uint32_t mpr_2beat1;
+	uint32_t mpr_3beat1;
+	uint32_t mpr_4beat1;
+	uint32_t mpr_5beat1;
+	uint32_t mpr_6beat1;
+	uint32_t mpr_7beat1;
+	uint32_t mpr_8beat1;
+	uint32_t mpr_0beat2;
+	uint32_t mpr_1beat2;
+	uint32_t mpr_2beat2;
+	uint32_t mpr_3beat2;
+	uint32_t mpr_4beat2;
+	uint32_t mpr_5beat2;
+	uint32_t mpr_6beat2;
+	uint32_t mpr_7beat2;
+	uint32_t mpr_8beat2;
+	uint32_t _pad_0x58_0x5f[2];
+	uint32_t auto_precharge;
+	uint32_t _pad_0x64_0xdf[31];
+	uint32_t dramaddrwidth;
+	uint32_t _pad_0xe4_0xff[7];
+	uint32_t eccctrl;
+	uint32_t eccctrl2;
+	uint32_t _pad_0x108_0x10f[2];
+	uint32_t errinten;
+	uint32_t errintens;
+	uint32_t errintenr;
+	uint32_t intmode;
+	uint32_t intstat;
+	uint32_t diaginttest;
+	uint32_t modstat;
+	uint32_t derraddra;
+	uint32_t serraddra;
+	uint32_t _pad_0x134_0x137;
+	uint32_t autowb_corraddr;
+	uint32_t serrcntreg;
+	uint32_t autowb_drop_cntreg;
+	uint32_t ecc_reg2wreccdatabus;
+	uint32_t ecc_rdeccdata2regbus;
+	uint32_t ecc_reg2rdeccdatabus;
+	uint32_t ecc_diagon;
+	uint32_t ecc_decstat;
+	uint32_t _pad_0x158_0x15f[2];
+	uint32_t ecc_errgenaddr_0;
+	uint32_t ecc_errgenaddr_1;
+	uint32_t ecc_errgenaddr_2;
+	uint32_t ecc_errgenaddr_3;
+	uint32_t ecc_ref2rddatabus_beat0;
+	uint32_t ecc_ref2rddatabus_beat1;
+	uint32_t ecc_ref2rddatabus_beat2;
+	uint32_t ecc_ref2rddatabus_beat3;
+	uint32_t ecc_errgenhaddr_0;
+	uint32_t ecc_errgenhaddr_1;
+	uint32_t ecc_errgenhaddr_2;
+	uint32_t ecc_errgenhaddr_3;
+	uint32_t ecc_rdeccdata2regbus_beat0;
+	uint32_t ecc_rdeccdata2regbus_beat1;
+	uint32_t ecc_rdeccdata2regbus_beat2;
+	uint32_t ecc_rdeccdata2regbus_beat3;
+	uint32_t _pad_0x1a0_0x1af[4];
+	uint32_t derrhaddr;
+	uint32_t serrhaddr;
+	uint32_t _pad_0x1b8_0x1bb;
+	uint32_t autowb_corrhaddr;
+	uint32_t _pad_0x1c0_0x20f[20];
+	uint32_t hpsintfcsel;
+	uint32_t rsthandshakectrl;
+	uint32_t rsthandshakestat;
+};
+
+struct socfpga_noc_ddr_scheduler {
+	uint32_t main_scheduler_id_coreid;
+	uint32_t main_scheduler_id_revisionid;
+	uint32_t main_scheduler_ddrconf;
+	uint32_t main_scheduler_ddrtiming;
+	uint32_t main_scheduler_ddrmode;
+	uint32_t main_scheduler_readlatency;
+	uint32_t _pad_0x18_0x37[8];
+	uint32_t main_scheduler_activate;
+	uint32_t main_scheduler_devtodev;
+	uint32_t main_scheduler_ddr4timing;
+};
+
+struct socfpga_io48_mmr {
+	uint32_t dbgcfg0;
+	uint32_t dbgcfg1;
+	uint32_t dbgcfg2;
+	uint32_t dbgcfg3;
+	uint32_t dbgcfg4;
+	uint32_t dbgcfg5;
+	uint32_t dbgcfg6;
+	uint32_t reserve0;
+	uint32_t reserve1;
+	uint32_t reserve2;
+	uint32_t ctrlcfg0;
+	uint32_t ctrlcfg1;
+	uint32_t ctrlcfg2;
+	uint32_t ctrlcfg3;
+	uint32_t ctrlcfg4;
+	uint32_t ctrlcfg5;
+	uint32_t ctrlcfg6;
+	uint32_t ctrlcfg7;
+	uint32_t ctrlcfg8;
+	uint32_t ctrlcfg9;
+	uint32_t dramtiming0;
+	uint32_t dramodt0;
+	uint32_t dramodt1;
+	uint32_t sbcfg0;
+	uint32_t sbcfg1;
+	uint32_t sbcfg2;
+	uint32_t sbcfg3;
+	uint32_t sbcfg4;
+	uint32_t sbcfg5;
+	uint32_t sbcfg6;
+	uint32_t sbcfg7;
+	uint32_t caltiming0;
+	uint32_t caltiming1;
+	uint32_t caltiming2;
+	uint32_t caltiming3;
+	uint32_t caltiming4;
+	uint32_t caltiming5;
+	uint32_t caltiming6;
+	uint32_t caltiming7;
+	uint32_t caltiming8;
+	uint32_t caltiming9;
+	uint32_t caltiming10;
+	uint32_t dramaddrw;
+	uint32_t sideband0;
+	uint32_t sideband1;
+	uint32_t sideband2;
+	uint32_t sideband3;
+	uint32_t sideband4;
+	uint32_t sideband5;
+	uint32_t sideband6;
+	uint32_t sideband7;
+	uint32_t sideband8;
+	uint32_t sideband9;
+	uint32_t sideband10;
+	uint32_t sideband11;
+	uint32_t sideband12;
+	uint32_t sideband13;
+	uint32_t sideband14;
+	uint32_t sideband15;
+	uint32_t dramsts;
+	uint32_t dbgdone;
+	uint32_t dbgsignals;
+	uint32_t dbgreset;
+	uint32_t dbgmatch;
+	uint32_t counter0mask;
+	uint32_t counter1mask;
+	uint32_t counter0match;
+	uint32_t counter1match;
+	uint32_t niosreserve0;
+	uint32_t niosreserve1;
+	uint32_t niosreserve2;
+};
+
+union dramaddrw_reg {
+	struct {
+		u32 cfg_col_addr_width:5;
+		u32 cfg_row_addr_width:5;
+		u32 cfg_bank_addr_width:4;
+		u32 cfg_bank_group_addr_width:2;
+		u32 cfg_cs_addr_width:3;
+		u32 reserved:13;
+	};
+	u32 word;
+};
+
+union ctrlcfg0_reg {
+	struct {
+		u32 cfg_mem_type:4;
+		u32 cfg_dimm_type:3;
+		u32 cfg_ac_pos:2;
+		u32 cfg_ctrl_burst_len:5;
+		u32 reserved:18;  /* Other fields unused */
+	};
+	u32 word;
+};
+
+union ctrlcfg1_reg {
+	struct {
+		u32 cfg_dbc3_burst_len:5;
+		u32 cfg_addr_order:2;
+		u32 cfg_ctrl_enable_ecc:1;
+		u32 reserved:24;  /* Other fields unused */
+	};
+	u32 word;
+};
+
+union dramtiming0_reg {
+	struct {
+		u32 cfg_tcl:6;
+		u32 reserved:8;  /* Other fields unused */
+	};
+	u32 word;
+};
+
+union caltiming0_reg {
+	struct {
+		u32 cfg_act_to_rdwr:6;
+		u32 cfg_act_to_pch:6;
+		u32 cfg_act_to_act:6;
+		u32 cfg_act_to_act_db:6;
+		u32 reserved:8;  /* Other fields unused */
+	};
+	u32 word;
+};
+
+union caltiming1_reg {
+	struct {
+		u32 cfg_rd_to_rd:6;
+		u32 cfg_rd_to_rd_dc:6;
+		u32 cfg_rd_to_rd_db:6;
+		u32 cfg_rd_to_wr:6;
+		u32 cfg_rd_to_wr_dc:6;
+		u32 reserved:2;
+	};
+	u32 word;
+};
+
+union caltiming2_reg {
+	struct {
+		u32 cfg_rd_to_wr_db:6;
+		u32 cfg_rd_to_pch:6;
+		u32 cfg_rd_ap_to_valid:6;
+		u32 cfg_wr_to_wr:6;
+		u32 cfg_wr_to_wr_dc:6;
+		u32 reserved:2;
+	};
+	u32 word;
+};
+
+union caltiming3_reg {
+	struct {
+		u32 cfg_wr_to_wr_db:6;
+		u32 cfg_wr_to_rd:6;
+		u32 cfg_wr_to_rd_dc:6;
+		u32 cfg_wr_to_rd_db:6;
+		u32 cfg_wr_to_pch:6;
+		u32 reserved:2;
+	};
+	u32 word;
+};
+
+union caltiming4_reg {
+	struct {
+		u32 cfg_wr_ap_to_valid:6;
+		u32 cfg_pch_to_valid:6;
+		u32 cfg_pch_all_to_valid:6;
+		u32 cfg_arf_to_valid:8;
+		u32 cfg_pdn_to_valid:6;
+	};
+	u32 word;
+};
+
+union caltiming9_reg {
+	struct {
+		u32 cfg_4_act_to_act:8;
+		u32 reserved:24;
+	};
+	u32 word;
+};
+
+#define DDR_SCHED_DDRTIMING_ACTTOACT_OFFSET	0
+#define DDR_SCHED_DDRTIMING_RDTOMISS_OFFSET	6
+#define DDR_SCHED_DDRTIMING_WRTOMISS_OFFSET	12
+#define DDR_SCHED_DDRTIMING_BURSTLEN_OFFSET	18
+#define DDR_SCHED_DDRTIMING_RDTOWR_OFFSET	21
+#define DDR_SCHED_DDRTIMING_WRTORD_OFFSET	26
+#define DDR_SCHED_DDRTIMING_BWRATIO_OFFSET	31
+#define DDR_SCHED_DDRMOD_BWRATIOEXTENDED_OFFSET	1
+#define DDR_SCHED_ACTIVATE_RRD_OFFSET		0
+#define DDR_SCHED_ACTIVATE_FAW_OFFSET		4
+#define DDR_SCHED_ACTIVATE_FAWBANK_OFFSET	10
+#define DDR_SCHED_DEVTODEV_BUSRDTORD_OFFSET	0
+#define DDR_SCHED_DEVTODEV_BUSRDTOWR_OFFSET	2
+#define DDR_SCHED_DEVTODEV_BUSWRTORD_OFFSET	4
+#define DDR_HMC_DDRIOCTRL_IOSIZE_MSK		0x00000003
+#define DDR_HMC_DDRCALSTAT_CAL_MSK		0x00000001
+#define DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK	0x00010000
+#define DDR_HMC_ECCCTL_CNT_RST_SET_MSK		0x00000100
+#define DDR_HMC_ECCCTL_ECC_EN_SET_MSK		0x00000001
+#define DDR_HMC_ECCCTL2_RMW_EN_SET_MSK		0x00000100
+#define DDR_HMC_ECCCTL2_AWB_EN_SET_MSK		0x00000001
+#define DDR_HMC_RSTHANDSHAKE_MASK		0x000000ff
+#define DDR_HMC_CORE2SEQ_INT_REQ		0xF
+#define DDR_HMC_SEQ2CORE_INT_RESP_MASK		0x8
+#define DDR_HMC_HPSINTFCSEL_ENABLE_MASK		0x001f1f1f
+
+#define CCU_CPU0_MPRT_ADBASE_DDRREG_ADDR	0xf7004400
+#define CCU_CPU0_MPRT_ADBASE_MEMSPACE0_ADDR	0xf70045c0
+#define CCU_CPU0_MPRT_ADBASE_MEMSPACE1A_ADDR	0xf70045e0
+#define CCU_CPU0_MPRT_ADBASE_MEMSPACE1B_ADDR	0xf7004600
+#define CCU_CPU0_MPRT_ADBASE_MEMSPACE1C_ADDR	0xf7004620
+#define CCU_CPU0_MPRT_ADBASE_MEMSPACE1D_ADDR	0xf7004640
+#define CCU_CPU0_MPRT_ADBASE_MEMSPACE1E_ADDR	0xf7004660
+
+#define CCU_IOM_MPRT_ADBASE_MEMSPACE0_ADDR	0xf7018560
+#define CCU_IOM_MPRT_ADBASE_MEMSPACE1A_ADDR	0xf7018580
+#define CCU_IOM_MPRT_ADBASE_MEMSPACE1B_ADDR	0xf70185a0
+#define CCU_IOM_MPRT_ADBASE_MEMSPACE1C_ADDR	0xf70185c0
+#define CCU_IOM_MPRT_ADBASE_MEMSPACE1D_ADDR	0xf70185e0
+#define CCU_IOM_MPRT_ADBASE_MEMSPACE1E_ADDR	0xf7018600
+
+#define CCU_ADBASE_DI_MASK			0x00000010
+
+#endif /* _SDRAM_S10_H_ */
diff --git a/drivers/ddr/altera/Makefile b/drivers/ddr/altera/Makefile
index bdd2872..943b6cd 100644
--- a/drivers/ddr/altera/Makefile
+++ b/drivers/ddr/altera/Makefile
@@ -10,4 +10,5 @@
 
 ifdef CONFIG_ALTERA_SDRAM
 obj-$(CONFIG_TARGET_SOCFPGA_GEN5) += sdram.o sequencer.o
+obj-$(CONFIG_TARGET_SOCFPGA_STRATIX10) += sdram_s10.o
 endif
diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c
new file mode 100644
index 0000000..c488caf
--- /dev/null
+++ b/drivers/ddr/altera/sdram_s10.c
@@ -0,0 +1,382 @@
+/*
+ * Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <div64.h>
+#include <asm/io.h>
+#include <watchdog.h>
+#include <asm/arch/sdram_s10.h>
+#include <asm/arch/system_manager.h>
+#include <asm/arch/reset_manager.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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_io48_mmr *socfpga_io48_mmr_base =
+		(void *)SOCFPGA_HMC_MMR_IO48_ADDRESS;
+static const struct socfpga_system_manager *sysmgr_regs =
+		(void *)SOCFPGA_SYSMGR_ADDRESS;
+
+#define DDR_CONFIG(A, B, C, R)	((A<<24)|(B<<16)|(C<<8)|R)
+
+/* The followring are the supported configurations */
+u32 ddr_config[] = {
+	/* DDR_CONFIG(Address order,Bank,Column,Row) */
+	/* List for DDR3 or LPDDR3 (pinout order > chip, row, bank, column) */
+	DDR_CONFIG(0, 3, 10, 12),
+	DDR_CONFIG(0, 3,  9, 13),
+	DDR_CONFIG(0, 3, 10, 13),
+	DDR_CONFIG(0, 3,  9, 14),
+	DDR_CONFIG(0, 3, 10, 14),
+	DDR_CONFIG(0, 3, 10, 15),
+	DDR_CONFIG(0, 3, 11, 14),
+	DDR_CONFIG(0, 3, 11, 15),
+	DDR_CONFIG(0, 3, 10, 16),
+	DDR_CONFIG(0, 3, 11, 16),
+	DDR_CONFIG(0, 3, 12, 15),	/* 0xa */
+	/* List for DDR4 only (pinout order > chip, bank, row, column) */
+	DDR_CONFIG(1, 3, 10, 14),
+	DDR_CONFIG(1, 4, 10, 14),
+	DDR_CONFIG(1, 3, 10, 15),
+	DDR_CONFIG(1, 4, 10, 15),
+	DDR_CONFIG(1, 3, 10, 16),
+	DDR_CONFIG(1, 4, 10, 16),
+	DDR_CONFIG(1, 3, 10, 17),
+	DDR_CONFIG(1, 4, 10, 17),
+};
+
+#define DDR_CONFIG_ELEMENTS	(sizeof(ddr_config)/sizeof(u32))
+
+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)
+{
+	u32 s2c, i;
+
+	writel(0, &socfpga_ecc_hmc_base->rsthandshakectrl);
+	s2c = readl(&socfpga_ecc_hmc_base->rsthandshakestat) &
+	      DDR_HMC_RSTHANDSHAKE_MASK;
+
+	for (i = 1000; (i > 0) && s2c; i--) {
+		WATCHDOG_RESET();
+		mdelay(1);
+		s2c = readl(&socfpga_ecc_hmc_base->rsthandshakestat) &
+		      DDR_HMC_RSTHANDSHAKE_MASK;
+	}
+	return !s2c;
+}
+
+static int emif_reset(void)
+{
+	u32 c2s, s2c, i;
+
+	c2s = readl(&socfpga_ecc_hmc_base->rsthandshakectrl) &
+	      DDR_HMC_RSTHANDSHAKE_MASK;
+	s2c = readl(&socfpga_ecc_hmc_base->rsthandshakestat) &
+	      DDR_HMC_RSTHANDSHAKE_MASK;
+
+	debug("DDR: c2s=%08x s2c=%08x nr0=%08x nr1=%08x nr2=%08x dst=%08x\n",
+	      c2s, s2c, readl(&socfpga_io48_mmr_base->niosreserve0),
+	      readl(&socfpga_io48_mmr_base->niosreserve1),
+	      readl(&socfpga_io48_mmr_base->niosreserve2),
+	      readl(&socfpga_io48_mmr_base->dramsts));
+
+	if (s2c && emif_clear()) {
+		printf("DDR: emif_clear() failed\n");
+		return -1;
+	}
+
+	puts("DDR: Triggerring emif_reset\n");
+	writel(DDR_HMC_CORE2SEQ_INT_REQ,
+	       &socfpga_ecc_hmc_base->rsthandshakectrl);
+
+	for (i = 1000; i > 0; i--) {
+		/* if seq2core[3] = 0, we are good */
+		if (!(readl(&socfpga_ecc_hmc_base->rsthandshakestat) &
+		    DDR_HMC_SEQ2CORE_INT_RESP_MASK))
+			break;
+		WATCHDOG_RESET();
+		mdelay(1);
+	}
+
+	if (!i) {
+		printf("DDR: failed to get ack from EMIF\n");
+		return -2;
+	}
+
+	if (emif_clear()) {
+		printf("DDR: emif_clear() failed\n");
+		return -3;
+	}
+
+	printf("DDR: emif_reset triggered successly\n");
+	return 0;
+}
+
+static int poll_hmc_clock_status(void)
+{
+	u32 status, i;
+
+	for (i = 1000; i > 0; i--) {
+		status = readl(&sysmgr_regs->hmc_clk) &
+			 SYSMGR_HMC_CLK_STATUS_MSK;
+		udelay(1);
+		if (status)
+			break;
+		WATCHDOG_RESET();
+	}
+	return status;
+}
+
+/**
+ * sdram_mmr_init_full() - Function to initialize SDRAM MMR
+ *
+ * Initialize the SDRAM MMR.
+ */
+int sdram_mmr_init_full(unsigned int unused)
+{
+	u32 update_value, io48_value, ddrioctl;
+	u32 i, j, cal_success;
+
+	/* Enable access to DDR from CPU master */
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_DDRREG_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_MEMSPACE0_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_MEMSPACE1A_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_MEMSPACE1B_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_MEMSPACE1C_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_MEMSPACE1D_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_CPU0_MPRT_ADBASE_MEMSPACE1E_ADDR, CCU_ADBASE_DI_MASK);
+
+	/* Enable access to DDR from IO master */
+	clrbits_le32(CCU_IOM_MPRT_ADBASE_MEMSPACE0_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_IOM_MPRT_ADBASE_MEMSPACE1A_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_IOM_MPRT_ADBASE_MEMSPACE1B_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_IOM_MPRT_ADBASE_MEMSPACE1C_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_IOM_MPRT_ADBASE_MEMSPACE1D_ADDR, CCU_ADBASE_DI_MASK);
+	clrbits_le32(CCU_IOM_MPRT_ADBASE_MEMSPACE1E_ADDR, CCU_ADBASE_DI_MASK);
+
+	/* this enables nonsecure access to DDR */
+	/* mpuregion0addr_limit */
+	writel(0xFFFF0000, 0xF8020118);
+	writel(0x1F, 0xF802011c);
+
+	/* nonmpuregion0addr_limit */
+	writel(0xFFFF0000, 0xF8020198);
+	writel(0x1F, 0xF802019C);
+
+	/* Enable mpuregion0enable and nonmpuregion0enable */
+	writel(BIT(0) | BIT(8), 0xF8020100);
+
+	/* Ensure HMC clock is running */
+	if (!poll_hmc_clock_status()) {
+		puts("DDR: Error as HMC clock not running\n");
+		return -1;
+	}
+
+	/* release DDR scheduler from reset */
+	socfpga_per_reset(SOCFPGA_RESET(SDR), 0);
+
+	/* Try 3 times to do a calibration */
+	for (i = 0; i < 3; i++) {
+		cal_success = readl(&socfpga_ecc_hmc_base->ddrcalstat) &
+			      DDR_HMC_DDRCALSTAT_CAL_MSK;
+		/* A delay to wait for calibration bit to set */
+		for (j = 0; (j < 1000) && !cal_success; j++) {
+			WATCHDOG_RESET();
+			mdelay(1);
+			cal_success = readl(&socfpga_ecc_hmc_base->ddrcalstat)
+				      & DDR_HMC_DDRCALSTAT_CAL_MSK;
+		}
+
+		if (cal_success)
+			break;
+		else
+			emif_reset();
+	}
+
+	if (!cal_success) {
+		puts("DDR: Error as SDRAM calibration failed\n");
+		return -1;
+	}
+	puts("DDR: Calibration success\n");
+
+	union ctrlcfg0_reg ctrlcfg0 = (union ctrlcfg0_reg)
+				readl(&socfpga_io48_mmr_base->ctrlcfg0);
+	union ctrlcfg1_reg ctrlcfg1 = (union ctrlcfg1_reg)
+				readl(&socfpga_io48_mmr_base->ctrlcfg1);
+	union dramaddrw_reg dramaddrw = (union dramaddrw_reg)
+				readl(&socfpga_io48_mmr_base->dramaddrw);
+	union dramtiming0_reg dramtim0 = (union dramtiming0_reg)
+				readl(&socfpga_io48_mmr_base->dramtiming0);
+	union caltiming0_reg caltim0 = (union caltiming0_reg)
+				readl(&socfpga_io48_mmr_base->caltiming0);
+	union caltiming1_reg caltim1 = (union caltiming1_reg)
+				readl(&socfpga_io48_mmr_base->caltiming1);
+	union caltiming2_reg caltim2 = (union caltiming2_reg)
+				readl(&socfpga_io48_mmr_base->caltiming2);
+	union caltiming3_reg caltim3 = (union caltiming3_reg)
+				readl(&socfpga_io48_mmr_base->caltiming3);
+	union caltiming4_reg caltim4 = (union caltiming4_reg)
+				readl(&socfpga_io48_mmr_base->caltiming4);
+	union caltiming9_reg caltim9 = (union caltiming9_reg)
+				readl(&socfpga_io48_mmr_base->caltiming9);
+
+	/*
+	 * Configure the DDR IO size [0xFFCFB008]
+	 * niosreserve0: Used to indicate DDR width &
+	 *	bit[7:0] = Number of data bits (bit[6:5] 0x01=32bit, 0x10=64bit)
+	 *	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 #
+	 */
+	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);
+
+	/* enable HPS interface to HMC */
+	writel(DDR_HMC_HPSINTFCSEL_ENABLE_MASK,
+	       &socfpga_ecc_hmc_base->hpsintfcsel);
+
+	/* Set the DDR Configuration */
+	io48_value = DDR_CONFIG(ctrlcfg1.cfg_addr_order,
+				(dramaddrw.cfg_bank_addr_width +
+				 dramaddrw.cfg_bank_group_addr_width),
+				dramaddrw.cfg_col_addr_width,
+				dramaddrw.cfg_row_addr_width);
+
+	update_value = match_ddr_conf(io48_value);
+	if (update_value)
+		writel(update_value,
+		       &socfpga_noc_ddr_scheduler_base->main_scheduler_ddrconf);
+
+	/* Configure HMC dramaddrw */
+	writel(readl(&socfpga_io48_mmr_base->dramaddrw),
+	       &socfpga_ecc_hmc_base->dramaddrwidth);
+
+	/*
+	 * Configure DDR timing
+	 *  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
+	 */
+	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 = (((dramtim0.cfg_tcl + 2 + DDR_TWR +
+		      (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 << DDR_SCHED_DDRTIMING_ACTTOACT_OFFSET) |
+		(update_value << DDR_SCHED_DDRTIMING_RDTOMISS_OFFSET) |
+		(io48_value << DDR_SCHED_DDRTIMING_WRTOMISS_OFFSET) |
+		((ctrlcfg0.cfg_ctrl_burst_len >> 2) <<
+			DDR_SCHED_DDRTIMING_BURSTLEN_OFFSET) |
+		(caltim1.cfg_rd_to_wr << DDR_SCHED_DDRTIMING_RDTOWR_OFFSET) |
+		(caltim3.cfg_wr_to_rd << DDR_SCHED_DDRTIMING_WRTORD_OFFSET) |
+		(((ddrioctl == 1) ? 1 : 0) <<
+			DDR_SCHED_DDRTIMING_BWRATIO_OFFSET)),
+		&socfpga_noc_ddr_scheduler_base->main_scheduler_ddrtiming);
+
+	/* Configure DDR mode [precharge = 0] */
+	writel(((ddrioctl ? 0 : 1) << DDR_SCHED_DDRMOD_BWRATIOEXTENDED_OFFSET),
+	       &socfpga_noc_ddr_scheduler_base->main_scheduler_ddrmode);
+
+	/* Configure the read latency */
+	writel((dramtim0.cfg_tcl >> 1) + DDR_READ_LATENCY_DELAY,
+	       &socfpga_noc_ddr_scheduler_base->main_scheduler_readlatency);
+
+	/*
+	 * Configuring timing values concerning activate commands
+	 * [FAWBANK alway 1 because always 4 bank DDR]
+	 */
+	writel(((caltim0.cfg_act_to_act_db << DDR_SCHED_ACTIVATE_RRD_OFFSET) |
+	       (caltim9.cfg_4_act_to_act << DDR_SCHED_ACTIVATE_FAW_OFFSET) |
+	       (DDR_ACTIVATE_FAWBANK << DDR_SCHED_ACTIVATE_FAWBANK_OFFSET)),
+	       &socfpga_noc_ddr_scheduler_base->main_scheduler_activate);
+
+	/*
+	 * Configuring timing values concerning device to device data bus
+	 * ownership change
+	 */
+	writel(((caltim1.cfg_rd_to_rd_dc <<
+			DDR_SCHED_DEVTODEV_BUSRDTORD_OFFSET) |
+	       (caltim1.cfg_rd_to_wr_dc <<
+			DDR_SCHED_DEVTODEV_BUSRDTOWR_OFFSET) |
+	       (caltim3.cfg_wr_to_rd_dc <<
+			DDR_SCHED_DEVTODEV_BUSWRTORD_OFFSET)),
+	       &socfpga_noc_ddr_scheduler_base->main_scheduler_devtodev);
+
+	/* Enable or disable the SDRAM ECC */
+	if (ctrlcfg1.cfg_ctrl_enable_ecc) {
+		setbits_le32(&socfpga_ecc_hmc_base->eccctrl,
+			     (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK |
+			      DDR_HMC_ECCCTL_CNT_RST_SET_MSK |
+			      DDR_HMC_ECCCTL_ECC_EN_SET_MSK));
+		clrbits_le32(&socfpga_ecc_hmc_base->eccctrl,
+			     (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK |
+			      DDR_HMC_ECCCTL_CNT_RST_SET_MSK));
+		setbits_le32(&socfpga_ecc_hmc_base->eccctrl2,
+			     (DDR_HMC_ECCCTL2_RMW_EN_SET_MSK |
+			      DDR_HMC_ECCCTL2_AWB_EN_SET_MSK));
+	} else {
+		clrbits_le32(&socfpga_ecc_hmc_base->eccctrl,
+			     (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK |
+			      DDR_HMC_ECCCTL_CNT_RST_SET_MSK |
+			      DDR_HMC_ECCCTL_ECC_EN_SET_MSK));
+		clrbits_le32(&socfpga_ecc_hmc_base->eccctrl2,
+			     (DDR_HMC_ECCCTL2_RMW_EN_SET_MSK |
+			      DDR_HMC_ECCCTL2_AWB_EN_SET_MSK));
+	}
+
+	puts("DDR: HMC init success\n");
+	return 0;
+}
+
+/**
+ * sdram_calculate_size() - Calculate SDRAM size
+ *
+ * Calculate SDRAM device size based on SDRAM controller parameters.
+ * Size is specified in bytes.
+ */
+unsigned long sdram_calculate_size(void)
+{
+	union dramaddrw_reg dramaddrw =
+		(union dramaddrw_reg)readl(&socfpga_io48_mmr_base->dramaddrw);
+
+	u32 size = (1 << (dramaddrw.cfg_cs_addr_width +
+		    dramaddrw.cfg_bank_group_addr_width +
+		    dramaddrw.cfg_bank_addr_width +
+		    dramaddrw.cfg_row_addr_width +
+		    dramaddrw.cfg_col_addr_width));
+
+	size *= (2 << (readl(&socfpga_ecc_hmc_base->ddrioctrl) &
+		       DDR_HMC_DDRIOCTRL_IOSIZE_MSK));
+
+	return size;
+}
-- 
2.2.2



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