Merge branch 'master' of git://git.denx.de/u-boot-samsung

1 files changed, 213 insertions, 0 deletions

diff --git a/arch/arm/mach-exynos/dmc_init_exynos4.c b/arch/arm/mach-exynos/dmc_init_exynos4.c
new file mode 100644
index 0000000000..ecddc72684
--- /dev/null
+++ b/arch/arm/mach-exynos/dmc_init_exynos4.c
@@ -0,0 +1,213 @@
+/*
+ * Memory setup for board based on EXYNOS4210
+ *
+ * Copyright (C) 2013 Samsung Electronics
+ * Rajeshwari Shinde <rajeshwari.s@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm/arch/dmc.h>
+#include "common_setup.h"
+#include "exynos4_setup.h"
+
+struct mem_timings mem = {
+	.direct_cmd_msr = {
+		DIRECT_CMD1, DIRECT_CMD2, DIRECT_CMD3, DIRECT_CMD4
+	},
+	.timingref = TIMINGREF_VAL,
+	.timingrow = TIMINGROW_VAL,
+	.timingdata = TIMINGDATA_VAL,
+	.timingpower = TIMINGPOWER_VAL,
+	.zqcontrol = ZQ_CONTROL_VAL,
+	.control0 = CONTROL0_VAL,
+	.control1 = CONTROL1_VAL,
+	.control2 = CONTROL2_VAL,
+	.concontrol = CONCONTROL_VAL,
+	.prechconfig = PRECHCONFIG,
+	.memcontrol = MEMCONTROL_VAL,
+	.memconfig0 = MEMCONFIG0_VAL,
+	.memconfig1 = MEMCONFIG1_VAL,
+	.dll_resync = FORCE_DLL_RESYNC,
+	.dll_on = DLL_CONTROL_ON,
+};
+static void phy_control_reset(int ctrl_no, struct exynos4_dmc *dmc)
+{
+	if (ctrl_no) {
+		writel((mem.control1 | (1 << mem.dll_resync)),
+		       &dmc->phycontrol1);
+		writel((mem.control1 | (0 << mem.dll_resync)),
+		       &dmc->phycontrol1);
+	} else {
+		writel((mem.control0 | (0 << mem.dll_on)),
+		       &dmc->phycontrol0);
+		writel((mem.control0 | (1 << mem.dll_on)),
+		       &dmc->phycontrol0);
+	}
+}
+
+static void dmc_config_mrs(struct exynos4_dmc *dmc, int chip)
+{
+	int i;
+	unsigned long mask = 0;
+
+	if (chip)
+		mask = DIRECT_CMD_CHIP1_SHIFT;
+
+	for (i = 0; i < MEM_TIMINGS_MSR_COUNT; i++) {
+		writel(mem.direct_cmd_msr[i] | mask,
+		       &dmc->directcmd);
+	}
+}
+
+static void dmc_init(struct exynos4_dmc *dmc)
+{
+	/*
+	 * DLL Parameter Setting:
+	 * Termination: Enable R/W
+	 * Phase Delay for DQS Cleaning: 180' Shift
+	 */
+	writel(mem.control1, &dmc->phycontrol1);
+
+	/*
+	 * ZQ Calibration
+	 * Termination: Disable
+	 * Auto Calibration Start: Enable
+	 */
+	writel(mem.zqcontrol, &dmc->phyzqcontrol);
+	sdelay(0x100000);
+
+	/*
+	 * Update DLL Information:
+	 * Force DLL Resyncronization
+	 */
+	phy_control_reset(1, dmc);
+	phy_control_reset(0, dmc);
+
+	/* Set DLL Parameters */
+	writel(mem.control1, &dmc->phycontrol1);
+
+	/* DLL Start */
+	writel((mem.control0 | CTRL_START | CTRL_DLL_ON), &dmc->phycontrol0);
+
+	writel(mem.control2, &dmc->phycontrol2);
+
+	/* Set Clock Ratio of Bus clock to Memory Clock */
+	writel(mem.concontrol, &dmc->concontrol);
+
+	/*
+	 * Memor Burst length: 8
+	 * Number of chips: 2
+	 * Memory Bus width: 32 bit
+	 * Memory Type: DDR3
+	 * Additional Latancy for PLL: 1 Cycle
+	 */
+	writel(mem.memcontrol, &dmc->memcontrol);
+
+	writel(mem.memconfig0, &dmc->memconfig0);
+	writel(mem.memconfig1, &dmc->memconfig1);
+
+	/* Config Precharge Policy */
+	writel(mem.prechconfig, &dmc->prechconfig);
+	/*
+	 * TimingAref, TimingRow, TimingData, TimingPower Setting:
+	 * Values as per Memory AC Parameters
+	 */
+	writel(mem.timingref, &dmc->timingref);
+	writel(mem.timingrow, &dmc->timingrow);
+	writel(mem.timingdata, &dmc->timingdata);
+	writel(mem.timingpower, &dmc->timingpower);
+
+	/* Chip0: NOP Command: Assert and Hold CKE to high level */
+	writel(DIRECT_CMD_NOP, &dmc->directcmd);
+	sdelay(0x100000);
+
+	/* Chip0: EMRS2, EMRS3, EMRS, MRS Commands Using Direct Command */
+	dmc_config_mrs(dmc, 0);
+	sdelay(0x100000);
+
+	/* Chip0: ZQINIT */
+	writel(DIRECT_CMD_ZQ, &dmc->directcmd);
+	sdelay(0x100000);
+
+	writel((DIRECT_CMD_NOP | DIRECT_CMD_CHIP1_SHIFT), &dmc->directcmd);
+	sdelay(0x100000);
+
+	/* Chip1: EMRS2, EMRS3, EMRS, MRS Commands Using Direct Command */
+	dmc_config_mrs(dmc, 1);
+	sdelay(0x100000);
+
+	/* Chip1: ZQINIT */
+	writel((DIRECT_CMD_ZQ | DIRECT_CMD_CHIP1_SHIFT), &dmc->directcmd);
+	sdelay(0x100000);
+
+	phy_control_reset(1, dmc);
+	sdelay(0x100000);
+
+	/* turn on DREX0, DREX1 */
+	writel((mem.concontrol | AREF_EN), &dmc->concontrol);
+}
+
+void mem_ctrl_init(int reset)
+{
+	struct exynos4_dmc *dmc;
+
+	/*
+	 * Async bridge configuration at CPU_core:
+	 * 1: half_sync
+	 * 0: full_sync
+	 */
+	writel(1, ASYNC_CONFIG);
+#ifdef CONFIG_ORIGEN
+	/* Interleave: 2Bit, Interleave_bit1: 0x15, Interleave_bit0: 0x7 */
+	writel(APB_SFR_INTERLEAVE_CONF_VAL, EXYNOS4_MIU_BASE +
+		APB_SFR_INTERLEAVE_CONF_OFFSET);
+	/* Update MIU Configuration */
+	writel(APB_SFR_ARBRITATION_CONF_VAL, EXYNOS4_MIU_BASE +
+		APB_SFR_ARBRITATION_CONF_OFFSET);
+#else
+	writel(APB_SFR_INTERLEAVE_CONF_VAL, EXYNOS4_MIU_BASE +
+		APB_SFR_INTERLEAVE_CONF_OFFSET);
+	writel(INTERLEAVE_ADDR_MAP_START_ADDR, EXYNOS4_MIU_BASE +
+		ABP_SFR_INTERLEAVE_ADDRMAP_START_OFFSET);
+	writel(INTERLEAVE_ADDR_MAP_END_ADDR, EXYNOS4_MIU_BASE +
+		ABP_SFR_INTERLEAVE_ADDRMAP_END_OFFSET);
+	writel(INTERLEAVE_ADDR_MAP_EN, EXYNOS4_MIU_BASE +
+		ABP_SFR_SLV_ADDRMAP_CONF_OFFSET);
+#ifdef CONFIG_MIU_LINEAR
+	writel(SLAVE0_SINGLE_ADDR_MAP_START_ADDR, EXYNOS4_MIU_BASE +
+		ABP_SFR_SLV0_SINGLE_ADDRMAP_START_OFFSET);
+	writel(SLAVE0_SINGLE_ADDR_MAP_END_ADDR, EXYNOS4_MIU_BASE +
+		ABP_SFR_SLV0_SINGLE_ADDRMAP_END_OFFSET);
+	writel(SLAVE1_SINGLE_ADDR_MAP_START_ADDR, EXYNOS4_MIU_BASE +
+		ABP_SFR_SLV1_SINGLE_ADDRMAP_START_OFFSET);
+	writel(SLAVE1_SINGLE_ADDR_MAP_END_ADDR, EXYNOS4_MIU_BASE +
+		ABP_SFR_SLV1_SINGLE_ADDRMAP_END_OFFSET);
+	writel(APB_SFR_SLV_ADDR_MAP_CONF_VAL, EXYNOS4_MIU_BASE +
+		ABP_SFR_SLV_ADDRMAP_CONF_OFFSET);
+#endif
+#endif
+	/* DREX0 */
+	dmc = (struct exynos4_dmc *)samsung_get_base_dmc_ctrl();
+	dmc_init(dmc);
+	dmc = (struct exynos4_dmc *)(samsung_get_base_dmc_ctrl()
+					+ DMC_OFFSET);
+	dmc_init(dmc);
+}