summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/arm/cpu/armv7/omap-common/Makefile1
-rw-r--r--arch/arm/cpu/armv7/omap-common/utils.c57
-rw-r--r--arch/arm/cpu/armv7/omap4/board.c9
-rw-r--r--arch/arm/cpu/armv7/omap4/emif.c739
-rw-r--r--arch/arm/cpu/armv7/omap4/sdram_elpida.c151
-rw-r--r--arch/arm/include/asm/arch-omap4/emif.h9
-rw-r--r--arch/arm/include/asm/arch-omap4/omap4.h10
-rw-r--r--arch/arm/include/asm/arch-omap4/sys_proto.h1
-rw-r--r--include/configs/omap4_panda.h5
-rw-r--r--include/configs/omap4_sdp4430.h5
10 files changed, 977 insertions, 10 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
index dc01ee5..8f698f8 100644
--- a/arch/arm/cpu/armv7/omap-common/Makefile
+++ b/arch/arm/cpu/armv7/omap-common/Makefile
@@ -28,6 +28,7 @@ LIB = $(obj)libomap-common.o
SOBJS := reset.o
COBJS := timer.o
+COBJS += utils.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/arch/arm/cpu/armv7/omap-common/utils.c b/arch/arm/cpu/armv7/omap-common/utils.c
new file mode 100644
index 0000000..ea935da
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/utils.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2011 Linaro Limited
+ * Aneesh V <aneesh@ti.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 <common.h>
+static void do_cancel_out(u32 *num, u32 *den, u32 factor)
+{
+ while (1) {
+ if (((*num)/factor*factor == (*num)) &&
+ ((*den)/factor*factor == (*den))) {
+ (*num) /= factor;
+ (*den) /= factor;
+ } else
+ break;
+ }
+}
+
+/*
+ * Cancel out the denominator and numerator of a fraction
+ * to get smaller numerator and denominator.
+ */
+void cancel_out(u32 *num, u32 *den, u32 den_limit)
+{
+ do_cancel_out(num, den, 2);
+ do_cancel_out(num, den, 3);
+ do_cancel_out(num, den, 5);
+ do_cancel_out(num, den, 7);
+ do_cancel_out(num, den, 11);
+ do_cancel_out(num, den, 13);
+ do_cancel_out(num, den, 17);
+ while ((*den) > den_limit) {
+ *num /= 2;
+ /*
+ * Round up the denominator so that the final fraction
+ * (num/den) is always <= the desired value
+ */
+ *den = (*den + 1) / 2;
+ }
+}
diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c
index ca107f7..786c239 100644
--- a/arch/arm/cpu/armv7/omap4/board.c
+++ b/arch/arm/cpu/armv7/omap4/board.c
@@ -32,6 +32,7 @@
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
#include <asm/sizes.h>
+#include <asm/arch/emif.h>
#include "omap4_mux_data.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -193,13 +194,13 @@ u32 omap4_sdram_size(void)
{
u32 section, i, total_size = 0, size, addr;
for (i = 0; i < 4; i++) {
- section = __raw_readl(DMM_LISA_MAP_BASE + i*4);
- addr = section & DMM_LISA_MAP_SYS_ADDR_MASK;
+ section = __raw_readl(OMAP44XX_DMM_LISA_MAP_BASE + i*4);
+ addr = section & OMAP44XX_SYS_ADDR_MASK;
/* See if the address is valid */
if ((addr >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
(addr < OMAP44XX_DRAM_ADDR_SPACE_END)) {
- size = ((section & DMM_LISA_MAP_SYS_SIZE_MASK) >>
- DMM_LISA_MAP_SYS_SIZE_SHIFT);
+ size = ((section & OMAP44XX_SYS_SIZE_MASK) >>
+ OMAP44XX_SYS_SIZE_SHIFT);
size = 1 << size;
size *= SZ_16M;
total_size += size;
diff --git a/arch/arm/cpu/armv7/omap4/emif.c b/arch/arm/cpu/armv7/omap4/emif.c
index b25c1ee..ceead9e 100644
--- a/arch/arm/cpu/armv7/omap4/emif.c
+++ b/arch/arm/cpu/armv7/omap4/emif.c
@@ -170,6 +170,628 @@ static void emif_update_timings(u32 base, const struct emif_regs *regs)
}
}
+#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+#define print_timing_reg(reg) debug(#reg" - 0x%08x\n", (reg))
+
+static u32 *const T_num = (u32 *)OMAP4_SRAM_SCRATCH_EMIF_T_NUM;
+static u32 *const T_den = (u32 *)OMAP4_SRAM_SCRATCH_EMIF_T_DEN;
+static u32 *const emif_sizes = (u32 *)OMAP4_SRAM_SCRATCH_EMIF_SIZE;
+
+/*
+ * Organization and refresh requirements for LPDDR2 devices of different
+ * types and densities. Derived from JESD209-2 section 2.4
+ */
+const struct lpddr2_addressing addressing_table[] = {
+ /* Banks tREFIx10 rowx32,rowx16 colx32,colx16 density */
+ {BANKS4, T_REFI_15_6, {ROW_12, ROW_12}, {COL_7, COL_8} },/*64M */
+ {BANKS4, T_REFI_15_6, {ROW_12, ROW_12}, {COL_8, COL_9} },/*128M */
+ {BANKS4, T_REFI_7_8, {ROW_13, ROW_13}, {COL_8, COL_9} },/*256M */
+ {BANKS4, T_REFI_7_8, {ROW_13, ROW_13}, {COL_9, COL_10} },/*512M */
+ {BANKS8, T_REFI_7_8, {ROW_13, ROW_13}, {COL_9, COL_10} },/*1GS4 */
+ {BANKS8, T_REFI_3_9, {ROW_14, ROW_14}, {COL_9, COL_10} },/*2GS4 */
+ {BANKS8, T_REFI_3_9, {ROW_14, ROW_14}, {COL_10, COL_11} },/*4G */
+ {BANKS8, T_REFI_3_9, {ROW_15, ROW_15}, {COL_10, COL_11} },/*8G */
+ {BANKS4, T_REFI_7_8, {ROW_14, ROW_14}, {COL_9, COL_10} },/*1GS2 */
+ {BANKS4, T_REFI_3_9, {ROW_15, ROW_15}, {COL_9, COL_10} },/*2GS2 */
+};
+
+static const u32 lpddr2_density_2_size_in_mbytes[] = {
+ 8, /* 64Mb */
+ 16, /* 128Mb */
+ 32, /* 256Mb */
+ 64, /* 512Mb */
+ 128, /* 1Gb */
+ 256, /* 2Gb */
+ 512, /* 4Gb */
+ 1024, /* 8Gb */
+ 2048, /* 16Gb */
+ 4096 /* 32Gb */
+};
+
+/*
+ * Calculate the period of DDR clock from frequency value and set the
+ * denominator and numerator in global variables for easy access later
+ */
+static void set_ddr_clk_period(u32 freq)
+{
+ /*
+ * period = 1/freq
+ * period_in_ns = 10^9/freq
+ */
+ *T_num = 1000000000;
+ *T_den = freq;
+ cancel_out(T_num, T_den, 200);
+
+}
+
+/*
+ * Convert time in nano seconds to number of cycles of DDR clock
+ */
+static inline u32 ns_2_cycles(u32 ns)
+{
+ return ((ns * (*T_den)) + (*T_num) - 1) / (*T_num);
+}
+
+/*
+ * ns_2_cycles with the difference that the time passed is 2 times the actual
+ * value(to avoid fractions). The cycles returned is for the original value of
+ * the timing parameter
+ */
+static inline u32 ns_x2_2_cycles(u32 ns)
+{
+ return ((ns * (*T_den)) + (*T_num) * 2 - 1) / ((*T_num) * 2);
+}
+
+/*
+ * Find addressing table index based on the device's type(S2 or S4) and
+ * density
+ */
+s8 addressing_table_index(u8 type, u8 density, u8 width)
+{
+ u8 index;
+ if ((density > LPDDR2_DENSITY_8Gb) || (width == LPDDR2_IO_WIDTH_8))
+ return -1;
+
+ /*
+ * Look at the way ADDR_TABLE_INDEX* values have been defined
+ * in emif.h compared to LPDDR2_DENSITY_* values
+ * The table is layed out in the increasing order of density
+ * (ignoring type). The exceptions 1GS2 and 2GS2 have been placed
+ * at the end
+ */
+ if ((type == LPDDR2_TYPE_S2) && (density == LPDDR2_DENSITY_1Gb))
+ index = ADDR_TABLE_INDEX1GS2;
+ else if ((type == LPDDR2_TYPE_S2) && (density == LPDDR2_DENSITY_2Gb))
+ index = ADDR_TABLE_INDEX2GS2;
+ else
+ index = density;
+
+ debug("emif: addressing table index %d\n", index);
+
+ return index;
+}
+
+/*
+ * Find the the right timing table from the array of timing
+ * tables of the device using DDR clock frequency
+ */
+static const struct lpddr2_ac_timings *get_timings_table(const struct
+ lpddr2_ac_timings const *const *device_timings,
+ u32 freq)
+{
+ u32 i, temp, freq_nearest;
+ const struct lpddr2_ac_timings *timings = 0;
+
+ emif_assert(freq <= MAX_LPDDR2_FREQ);
+ emif_assert(device_timings);
+
+ /*
+ * Start with the maximum allowed frequency - that is always safe
+ */
+ freq_nearest = MAX_LPDDR2_FREQ;
+ /*
+ * Find the timings table that has the max frequency value:
+ * i. Above or equal to the DDR frequency - safe
+ * ii. The lowest that satisfies condition (i) - optimal
+ */
+ for (i = 0; (i < MAX_NUM_SPEEDBINS) && device_timings[i]; i++) {
+ temp = device_timings[i]->max_freq;
+ if ((temp >= freq) && (temp <= freq_nearest)) {
+ freq_nearest = temp;
+ timings = device_timings[i];
+ }
+ }
+ debug("emif: timings table: %d\n", freq_nearest);
+ return timings;
+}
+
+/*
+ * Finds the value of emif_sdram_config_reg
+ * All parameters are programmed based on the device on CS0.
+ * If there is a device on CS1, it will be same as that on CS0 or
+ * it will be NVM. We don't support NVM yet.
+ * If cs1_device pointer is NULL it is assumed that there is no device
+ * on CS1
+ */
+static u32 get_sdram_config_reg(const struct lpddr2_device_details *cs0_device,
+ const struct lpddr2_device_details *cs1_device,
+ const struct lpddr2_addressing *addressing,
+ u8 RL)
+{
+ u32 config_reg = 0;
+
+ config_reg |= (cs0_device->type + 4) << OMAP44XX_REG_SDRAM_TYPE_SHIFT;
+ config_reg |= EMIF_INTERLEAVING_POLICY_MAX_INTERLEAVING <<
+ OMAP44XX_REG_IBANK_POS_SHIFT;
+
+ config_reg |= cs0_device->io_width << OMAP44XX_REG_NARROW_MODE_SHIFT;
+
+ config_reg |= RL << OMAP44XX_REG_CL_SHIFT;
+
+ config_reg |= addressing->row_sz[cs0_device->io_width] <<
+ OMAP44XX_REG_ROWSIZE_SHIFT;
+
+ config_reg |= addressing->num_banks << OMAP44XX_REG_IBANK_SHIFT;
+
+ config_reg |= (cs1_device ? EBANK_CS1_EN : EBANK_CS1_DIS) <<
+ OMAP44XX_REG_EBANK_SHIFT;
+
+ config_reg |= addressing->col_sz[cs0_device->io_width] <<
+ OMAP44XX_REG_PAGESIZE_SHIFT;
+
+ return config_reg;
+}
+
+static u32 get_sdram_ref_ctrl(u32 freq,
+ const struct lpddr2_addressing *addressing)
+{
+ u32 ref_ctrl = 0, val = 0, freq_khz;
+ freq_khz = freq / 1000;
+ /*
+ * refresh rate to be set is 'tREFI * freq in MHz
+ * division by 10000 to account for khz and x10 in t_REFI_us_x10
+ */
+ val = addressing->t_REFI_us_x10 * freq_khz / 10000;
+ ref_ctrl |= val << OMAP44XX_REG_REFRESH_RATE_SHIFT;
+
+ return ref_ctrl;
+}
+
+static u32 get_sdram_tim_1_reg(const struct lpddr2_ac_timings *timings,
+ const struct lpddr2_min_tck *min_tck,
+ const struct lpddr2_addressing *addressing)
+{
+ u32 tim1 = 0, val = 0;
+ val = max(min_tck->tWTR, ns_x2_2_cycles(timings->tWTRx2)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_WTR_SHIFT;
+
+ if (addressing->num_banks == BANKS8)
+ val = (timings->tFAW * (*T_den) + 4 * (*T_num) - 1) /
+ (4 * (*T_num)) - 1;
+ else
+ val = max(min_tck->tRRD, ns_2_cycles(timings->tRRD)) - 1;
+
+ tim1 |= val << OMAP44XX_REG_T_RRD_SHIFT;
+
+ val = ns_2_cycles(timings->tRASmin + timings->tRPab) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RC_SHIFT;
+
+ val = max(min_tck->tRAS_MIN, ns_2_cycles(timings->tRASmin)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RAS_SHIFT;
+
+ val = max(min_tck->tWR, ns_2_cycles(timings->tWR)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_WR_SHIFT;
+
+ val = max(min_tck->tRCD, ns_2_cycles(timings->tRCD)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RCD_SHIFT;
+
+ val = max(min_tck->tRP_AB, ns_2_cycles(timings->tRPab)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RP_SHIFT;
+
+ return tim1;
+}
+
+static u32 get_sdram_tim_2_reg(const struct lpddr2_ac_timings *timings,
+ const struct lpddr2_min_tck *min_tck)
+{
+ u32 tim2 = 0, val = 0;
+ val = max(min_tck->tCKE, timings->tCKE) - 1;
+ tim2 |= val << OMAP44XX_REG_T_CKE_SHIFT;
+
+ val = max(min_tck->tRTP, ns_x2_2_cycles(timings->tRTPx2)) - 1;
+ tim2 |= val << OMAP44XX_REG_T_RTP_SHIFT;
+
+ /*
+ * tXSRD = tRFCab + 10 ns. XSRD and XSNR should have the
+ * same value
+ */
+ val = ns_2_cycles(timings->tXSR) - 1;
+ tim2 |= val << OMAP44XX_REG_T_XSRD_SHIFT;
+ tim2 |= val << OMAP44XX_REG_T_XSNR_SHIFT;
+
+ val = max(min_tck->tXP, ns_x2_2_cycles(timings->tXPx2)) - 1;
+ tim2 |= val << OMAP44XX_REG_T_XP_SHIFT;
+
+ return tim2;
+}
+
+static u32 get_sdram_tim_3_reg(const struct lpddr2_ac_timings *timings,
+ const struct lpddr2_min_tck *min_tck,
+ const struct lpddr2_addressing *addressing)
+{
+ u32 tim3 = 0, val = 0;
+ val = min(timings->tRASmax * 10 / addressing->t_REFI_us_x10 - 1, 0xF);
+ tim3 |= val << OMAP44XX_REG_T_RAS_MAX_SHIFT;
+
+ val = ns_2_cycles(timings->tRFCab) - 1;
+ tim3 |= val << OMAP44XX_REG_T_RFC_SHIFT;
+
+ val = ns_x2_2_cycles(timings->tDQSCKMAXx2) - 1;
+ tim3 |= val << OMAP44XX_REG_T_TDQSCKMAX_SHIFT;
+
+ val = ns_2_cycles(timings->tZQCS) - 1;
+ tim3 |= val << OMAP44XX_REG_ZQ_ZQCS_SHIFT;
+
+ val = max(min_tck->tCKESR, ns_2_cycles(timings->tCKESR)) - 1;
+ tim3 |= val << OMAP44XX_REG_T_CKESR_SHIFT;
+
+ return tim3;
+}
+
+static u32 get_zq_config_reg(const struct lpddr2_device_details *cs1_device,
+ const struct lpddr2_addressing *addressing,
+ u8 volt_ramp)
+{
+ u32 zq = 0, val = 0;
+ if (volt_ramp)
+ val =
+ EMIF_ZQCS_INTERVAL_DVFS_IN_US * 10 /
+ addressing->t_REFI_us_x10;
+ else
+ val =
+ EMIF_ZQCS_INTERVAL_NORMAL_IN_US * 10 /
+ addressing->t_REFI_us_x10;
+ zq |= val << OMAP44XX_REG_ZQ_REFINTERVAL_SHIFT;
+
+ zq |= (REG_ZQ_ZQCL_MULT - 1) << OMAP44XX_REG_ZQ_ZQCL_MULT_SHIFT;
+
+ zq |= (REG_ZQ_ZQINIT_MULT - 1) << OMAP44XX_REG_ZQ_ZQINIT_MULT_SHIFT;
+
+ zq |= REG_ZQ_SFEXITEN_ENABLE << OMAP44XX_REG_ZQ_SFEXITEN_SHIFT;
+
+ /*
+ * Assuming that two chipselects have a single calibration resistor
+ * If there are indeed two calibration resistors, then this flag should
+ * be enabled to take advantage of dual calibration feature.
+ * This data should ideally come from board files. But considering
+ * that none of the boards today have calibration resistors per CS,
+ * it would be an unnecessary overhead.
+ */
+ zq |= REG_ZQ_DUALCALEN_DISABLE << OMAP44XX_REG_ZQ_DUALCALEN_SHIFT;
+
+ zq |= REG_ZQ_CS0EN_ENABLE << OMAP44XX_REG_ZQ_CS0EN_SHIFT;
+
+ zq |= (cs1_device ? 1 : 0) << OMAP44XX_REG_ZQ_CS1EN_SHIFT;
+
+ return zq;
+}
+
+static u32 get_temp_alert_config(const struct lpddr2_device_details *cs1_device,
+ const struct lpddr2_addressing *addressing,
+ u8 is_derated)
+{
+ u32 alert = 0, interval;
+ interval =
+ TEMP_ALERT_POLL_INTERVAL_MS * 10000 / addressing->t_REFI_us_x10;
+ if (is_derated)
+ interval *= 4;
+ alert |= interval << OMAP44XX_REG_TA_REFINTERVAL_SHIFT;
+
+ alert |= TEMP_ALERT_CONFIG_DEVCT_1 << OMAP44XX_REG_TA_DEVCNT_SHIFT;
+
+ alert |= TEMP_ALERT_CONFIG_DEVWDT_32 << OMAP44XX_REG_TA_DEVWDT_SHIFT;
+
+ alert |= 1 << OMAP44XX_REG_TA_SFEXITEN_SHIFT;
+
+ alert |= 1 << OMAP44XX_REG_TA_CS0EN_SHIFT;
+
+ alert |= (cs1_device ? 1 : 0) << OMAP44XX_REG_TA_CS1EN_SHIFT;
+
+ return alert;
+}
+
+static u32 get_read_idle_ctrl_reg(u8 volt_ramp)
+{
+ u32 idle = 0, val = 0;
+ if (volt_ramp)
+ val = ns_2_cycles(READ_IDLE_INTERVAL_DVFS) / 64 + 1;
+ else
+ /*Maximum value in normal conditions - suggested by hw team */
+ val = 0x1FF;
+ idle |= val << OMAP44XX_REG_READ_IDLE_INTERVAL_SHIFT;
+
+ idle |= EMIF_REG_READ_IDLE_LEN_VAL << OMAP44XX_REG_READ_IDLE_LEN_SHIFT;
+
+ return idle;
+}
+
+static u32 get_ddr_phy_ctrl_1(u32 freq, u8 RL)
+{
+ u32 phy = 0, val = 0;
+
+ phy |= (RL + 2) << OMAP44XX_REG_READ_LATENCY_SHIFT;
+
+ if (freq <= 100000000)
+ val = EMIF_DLL_SLAVE_DLY_CTRL_100_MHZ_AND_LESS;
+ else if (freq <= 200000000)
+ val = EMIF_DLL_SLAVE_DLY_CTRL_200_MHZ;
+ else
+ val = EMIF_DLL_SLAVE_DLY_CTRL_400_MHZ;
+ phy |= val << OMAP44XX_REG_DLL_SLAVE_DLY_CTRL_SHIFT;
+
+ /* Other fields are constant magic values. Hardcode them together */
+ phy |= EMIF_DDR_PHY_CTRL_1_BASE_VAL <<
+ OMAP44XX_EMIF_DDR_PHY_CTRL_1_BASE_VAL_SHIFT;
+
+ return phy;
+}
+
+static u32 get_emif_mem_size(struct emif_device_details *devices)
+{
+ u32 size_mbytes = 0, temp;
+
+ if (!devices)
+ return 0;
+
+ if (devices->cs0_device_details) {
+ temp = devices->cs0_device_details->density;
+ size_mbytes += lpddr2_density_2_size_in_mbytes[temp];
+ }
+
+ if (devices->cs1_device_details) {
+ temp = devices->cs1_device_details->density;
+ size_mbytes += lpddr2_density_2_size_in_mbytes[temp];
+ }
+ /* convert to bytes */
+ return size_mbytes << 20;
+}
+
+/* Gets the encoding corresponding to a given DMM section size */
+u32 get_dmm_section_size_map(u32 section_size)
+{
+ /*
+ * Section size mapping:
+ * 0x0: 16-MiB section
+ * 0x1: 32-MiB section
+ * 0x2: 64-MiB section
+ * 0x3: 128-MiB section
+ * 0x4: 256-MiB section
+ * 0x5: 512-MiB section
+ * 0x6: 1-GiB section
+ * 0x7: 2-GiB section
+ */
+ section_size >>= 24; /* divide by 16 MB */
+ return log_2_n_round_down(section_size);
+}
+
+static void emif_calculate_regs(
+ const struct emif_device_details *emif_dev_details,
+ u32 freq, struct emif_regs *regs)
+{
+ u32 temp, sys_freq;
+ const struct lpddr2_addressing *addressing;
+ const struct lpddr2_ac_timings *timings;
+ const struct lpddr2_min_tck *min_tck;
+ const struct lpddr2_device_details *cs0_dev_details =
+ emif_dev_details->cs0_device_details;
+ const struct lpddr2_device_details *cs1_dev_details =
+ emif_dev_details->cs1_device_details;
+ const struct lpddr2_device_timings *cs0_dev_timings =
+ emif_dev_details->cs0_device_timings;
+
+ emif_assert(emif_dev_details);
+ emif_assert(regs);
+ /*
+ * You can not have a device on CS1 without one on CS0
+ * So configuring EMIF without a device on CS0 doesn't
+ * make sense
+ */
+ emif_assert(cs0_dev_details);
+ emif_assert(cs0_dev_details->type != LPDDR2_TYPE_NVM);
+ /*
+ * If there is a device on CS1 it should be same type as CS0
+ * (or NVM. But NVM is not supported in this driver yet)
+ */
+ emif_assert((cs1_dev_details == NULL) ||
+ (cs1_dev_details->type == LPDDR2_TYPE_NVM) ||
+ (cs0_dev_details->type == cs1_dev_details->type));
+ emif_assert(freq <= MAX_LPDDR2_FREQ);
+
+ set_ddr_clk_period(freq);
+
+ /*
+ * The device on CS0 is used for all timing calculations
+ * There is only one set of registers for timings per EMIF. So, if the
+ * second CS(CS1) has a device, it should have the same timings as the
+ * device on CS0
+ */
+ timings = get_timings_table(cs0_dev_timings->ac_timings, freq);
+ emif_assert(timings);
+ min_tck = cs0_dev_timings->min_tck;
+
+ temp = addressing_table_index(cs0_dev_details->type,
+ cs0_dev_details->density,
+ cs0_dev_details->io_width);
+
+ emif_assert((temp >= 0));
+ addressing = &(addressing_table[temp]);
+ emif_assert(addressing);
+
+ sys_freq = get_sys_clk_freq();
+
+ regs->sdram_config_init = get_sdram_config_reg(cs0_dev_details,
+ cs1_dev_details,
+ addressing, RL_BOOT);
+
+ regs->sdram_config = get_sdram_config_reg(cs0_dev_details,
+ cs1_dev_details,
+ addressing, RL_FINAL);
+
+ regs->ref_ctrl = get_sdram_ref_ctrl(freq, addressing);
+
+ regs->sdram_tim1 = get_sdram_tim_1_reg(timings, min_tck, addressing);
+
+ regs->sdram_tim2 = get_sdram_tim_2_reg(timings, min_tck);
+
+ regs->sdram_tim3 = get_sdram_tim_3_reg(timings, min_tck, addressing);
+
+ regs->read_idle_ctrl = get_read_idle_ctrl_reg(LPDDR2_VOLTAGE_STABLE);
+
+ regs->temp_alert_config =
+ get_temp_alert_config(cs1_dev_details, addressing, 0);
+
+ regs->zq_config = get_zq_config_reg(cs1_dev_details, addressing,
+ LPDDR2_VOLTAGE_STABLE);
+
+ regs->emif_ddr_phy_ctlr_1_init =
+ get_ddr_phy_ctrl_1(sys_freq / 2, RL_BOOT);
+
+ regs->emif_ddr_phy_ctlr_1 =
+ get_ddr_phy_ctrl_1(freq, RL_FINAL);
+
+ regs->freq = freq;
+
+ print_timing_reg(regs->sdram_config_init);
+ print_timing_reg(regs->sdram_config);
+ print_timing_reg(regs->ref_ctrl);
+ print_timing_reg(regs->sdram_tim1);
+ print_timing_reg(regs->sdram_tim2);
+ print_timing_reg(regs->sdram_tim3);
+ print_timing_reg(regs->read_idle_ctrl);
+ print_timing_reg(regs->temp_alert_config);
+ print_timing_reg(regs->zq_config);
+ print_timing_reg(regs->emif_ddr_phy_ctlr_1);
+ print_timing_reg(regs->emif_ddr_phy_ctlr_1_init);
+}
+#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
+
+#ifdef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
+/* Base AC Timing values specified by JESD209-2 for 400MHz operation */
+static const struct lpddr2_ac_timings timings_jedec_400_mhz = {
+ .max_freq = 400000000,
+ .RL = 6,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 15,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+/* Base AC Timing values specified by JESD209-2 for 333 MHz operation */
+static const struct lpddr2_ac_timings timings_jedec_333_mhz = {
+ .max_freq = 333000000,
+ .RL = 5,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 15,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+/* Base AC Timing values specified by JESD209-2 for 200 MHz operation */
+static const struct lpddr2_ac_timings timings_jedec_200_mhz = {
+ .max_freq = 200000000,
+ .RL = 3,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 20,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+/*
+ * Min tCK values specified by JESD209-2
+ * Min tCK specifies the minimum duration of some AC timing parameters in terms
+ * of the number of cycles. If the calculated number of cycles based on the
+ * absolute time value is less than the min tCK value, min tCK value should
+ * be used instead. This typically happens at low frequencies.
+ */
+static const struct lpddr2_min_tck min_tck_jedec = {
+ .tRL = 3,
+ .tRP_AB = 3,
+ .tRCD = 3,
+ .tWR = 3,
+ .tRAS_MIN = 3,
+ .tRRD = 2,
+ .tWTR = 2,
+ .tXP = 2,
+ .tRTP = 2,
+ .tCKE = 3,
+ .tCKESR = 3,
+ .tFAW = 8
+};
+
+static const struct lpddr2_ac_timings const*
+ jedec_ac_timings[MAX_NUM_SPEEDBINS] = {
+ &timings_jedec_200_mhz,
+ &timings_jedec_333_mhz,
+ &timings_jedec_400_mhz
+};
+
+static const struct lpddr2_device_timings jedec_default_timings = {
+ .ac_timings = jedec_ac_timings,
+ .min_tck = &min_tck_jedec
+};
+
+void emif_get_device_timings(u32 emif_nr,
+ const struct lpddr2_device_timings **cs0_device_timings,
+ const struct lpddr2_device_timings **cs1_device_timings)
+{
+ /* Assume Identical devices on EMIF1 & EMIF2 */
+ *cs0_device_timings = &jedec_default_timings;
+ *cs1_device_timings = &jedec_default_timings;
+}
+#endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */
+
static void do_sdram_init(u32 base)
{
const struct emif_regs *regs;
@@ -180,11 +802,54 @@ static void do_sdram_init(u32 base)
in_sdram = running_from_sdram();
emif_nr = (base == OMAP44XX_EMIF1) ? 1 : 2;
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
emif_get_reg_dump(emif_nr, &regs);
if (!regs) {
debug("EMIF: reg dump not provided\n");
return;
}
+#else
+ /*
+ * The user has not provided the register values. We need to
+ * calculate it based on the timings and the DDR frequency
+ */
+ struct emif_device_details dev_details;
+ struct emif_regs calculated_regs;
+
+ /*
+ * Get device details:
+ * - Discovered if CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION is set
+ * - Obtained from user otherwise
+ */
+ struct lpddr2_device_details cs0_dev_details, cs1_dev_details;
+ emif_get_device_details(emif_nr, &cs0_dev_details,
+ &cs1_dev_details);
+ dev_details.cs0_device_details = &cs0_dev_details;
+ dev_details.cs1_device_details = &cs1_dev_details;
+
+ /* Return if no devices on this EMIF */
+ if (!dev_details.cs0_device_details &&
+ !dev_details.cs1_device_details) {
+ emif_sizes[emif_nr - 1] = 0;
+ return;
+ }
+
+ if (!in_sdram)
+ emif_sizes[emif_nr - 1] = get_emif_mem_size(&dev_details);
+
+ /*
+ * Get device timings:
+ * - Default timings specified by JESD209-2 if
+ * CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS is set
+ * - Obtained from user otherwise
+ */
+ emif_get_device_timings(emif_nr, &dev_details.cs0_device_timings,
+ &dev_details.cs1_device_timings);
+
+ /* Calculate the register values */
+ emif_calculate_regs(&dev_details, omap4_ddr_clk(), &calculated_regs);
+ regs = &calculated_regs;
+#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
/*
* Initializing the LPDDR2 device can not happen from SDRAM.
@@ -242,8 +907,82 @@ static void dmm_init(u32 base)
{
const struct dmm_lisa_map_regs *lisa_map_regs;
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
emif_get_dmm_regs(&lisa_map_regs);
+#else
+ u32 emif1_size, emif2_size, mapped_size, section_map = 0;
+ u32 section_cnt, sys_addr;
+ struct dmm_lisa_map_regs lis_map_regs_calculated = {0};
+
+ mapped_size = 0;
+ section_cnt = 3;
+ sys_addr = CONFIG_SYS_SDRAM_BASE;
+ emif1_size = emif_sizes[0];
+ emif2_size = emif_sizes[1];
+ debug("emif1_size 0x%x emif2_size 0x%x\n", emif1_size, emif2_size);
+
+ if (!emif1_size && !emif2_size)
+ return;
+
+ /* symmetric interleaved section */
+ if (emif1_size && emif2_size) {
+ mapped_size = min(emif1_size, emif2_size);
+ section_map = DMM_LISA_MAP_INTERLEAVED_BASE_VAL;
+ section_map |= 0 << OMAP44XX_SDRC_ADDR_SHIFT;
+ /* only MSB */
+ section_map |= (sys_addr >> 24) <<
+ OMAP44XX_SYS_ADDR_SHIFT;
+ section_map |= get_dmm_section_size_map(mapped_size * 2)
+ << OMAP44XX_SYS_SIZE_SHIFT;
+ lis_map_regs_calculated.dmm_lisa_map_3 = section_map;
+ emif1_size -= mapped_size;
+ emif2_size -= mapped_size;
+ sys_addr += (mapped_size * 2);
+ section_cnt--;
+ }
+
+ /*
+ * Single EMIF section(we can have a maximum of 1 single EMIF
+ * section- either EMIF1 or EMIF2 or none, but not both)
+ */
+ if (emif1_size) {
+ section_map = DMM_LISA_MAP_EMIF1_ONLY_BASE_VAL;
+ section_map |= get_dmm_section_size_map(emif1_size)
+ << OMAP44XX_SYS_SIZE_SHIFT;
+ /* only MSB */
+ section_map |= (mapped_size >> 24) <<
+ OMAP44XX_SDRC_ADDR_SHIFT;
+ /* only MSB */
+ section_map |= (sys_addr >> 24) << OMAP44XX_SYS_ADDR_SHIFT;
+ section_cnt--;
+ }
+ if (emif2_size) {
+ section_map = DMM_LISA_MAP_EMIF2_ONLY_BASE_VAL;
+ section_map |= get_dmm_section_size_map(emif2_size) <<
+ OMAP44XX_SYS_SIZE_SHIFT;
+ /* only MSB */
+ section_map |= mapped_size >> 24 << OMAP44XX_SDRC_ADDR_SHIFT;
+ /* only MSB */
+ section_map |= sys_addr >> 24 << OMAP44XX_SYS_ADDR_SHIFT;
+ section_cnt--;
+ }
+
+ if (section_cnt == 2) {
+ /* Only 1 section - either symmetric or single EMIF */
+ lis_map_regs_calculated.dmm_lisa_map_3 = section_map;
+ lis_map_regs_calculated.dmm_lisa_map_2 = 0;
+ lis_map_regs_calculated.dmm_lisa_map_1 = 0;
+ } else {
+ /* 2 sections - 1 symmetric, 1 single EMIF */
+ lis_map_regs_calculated.dmm_lisa_map_2 = section_map;
+ lis_map_regs_calculated.dmm_lisa_map_1 = 0;
+ }
+
+ /* TRAP for invalid TILER mappings in section 0 */
+ lis_map_regs_calculated.dmm_lisa_map_0 = DMM_LISA_MAP_0_INVAL_ADDR_TRAP;
+ lisa_map_regs = &lis_map_regs_calculated;
+#endif
struct dmm_lisa_map_regs *hw_lisa_map_regs =
(struct dmm_lisa_map_regs *)base;
diff --git a/arch/arm/cpu/armv7/omap4/sdram_elpida.c b/arch/arm/cpu/armv7/omap4/sdram_elpida.c
index c950c87..7757aad 100644
--- a/arch/arm/cpu/armv7/omap4/sdram_elpida.c
+++ b/arch/arm/cpu/armv7/omap4/sdram_elpida.c
@@ -46,6 +46,8 @@
* - emif_get_device_timings()
*/
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+
static const struct emif_regs emif_regs_elpida_200_mhz_2cs = {
.sdram_config_init = 0x80000eb9,
.sdram_config = 0x80001ab9,
@@ -129,3 +131,152 @@ static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs)
__attribute__((weak, alias("emif_get_dmm_regs_sdp")));
+
+#else
+
+static const struct lpddr2_device_details elpida_2G_S4_details = {
+ .type = LPDDR2_TYPE_S4,
+ .density = LPDDR2_DENSITY_2Gb,
+ .io_width = LPDDR2_IO_WIDTH_32,
+ .manufacturer = LPDDR2_MANUFACTURER_ELPIDA
+};
+
+static void emif_get_device_details_sdp(u32 emif_nr,
+ struct lpddr2_device_details *cs0_device_details,
+ struct lpddr2_device_details *cs1_device_details)
+{
+ u32 omap_rev = omap_revision();
+
+ /* EMIF1 & EMIF2 have identical configuration */
+ *cs0_device_details = elpida_2G_S4_details;
+
+ if (omap_rev == OMAP4430_ES1_0)
+ cs1_device_details = NULL;
+ else
+ *cs1_device_details = elpida_2G_S4_details;
+}
+
+void emif_get_device_details(u32 emif_nr,
+ struct lpddr2_device_details *cs0_device_details,
+ struct lpddr2_device_details *cs1_device_details)
+ __attribute__((weak, alias("emif_get_device_details_sdp")));
+
+#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
+
+#ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
+static const struct lpddr2_ac_timings timings_elpida_400_mhz = {
+ .max_freq = 400000000,
+ .RL = 6,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 15,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+static const struct lpddr2_ac_timings timings_elpida_333_mhz = {
+ .max_freq = 333000000,
+ .RL = 5,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 15,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+static const struct lpddr2_ac_timings timings_elpida_200_mhz = {
+ .max_freq = 200000000,
+ .RL = 3,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 20,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+static const struct lpddr2_min_tck min_tck_elpida = {
+ .tRL = 3,
+ .tRP_AB = 3,
+ .tRCD = 3,
+ .tWR = 3,
+ .tRAS_MIN = 3,
+ .tRRD = 2,
+ .tWTR = 2,
+ .tXP = 2,
+ .tRTP = 2,
+ .tCKE = 3,
+ .tCKESR = 3,
+ .tFAW = 8
+};
+
+static const struct lpddr2_ac_timings *elpida_ac_timings[MAX_NUM_SPEEDBINS] = {
+ &timings_elpida_200_mhz,
+ &timings_elpida_333_mhz,
+ &timings_elpida_400_mhz
+};
+
+static const struct lpddr2_device_timings elpida_2G_S4_timings = {
+ .ac_timings = elpida_ac_timings,
+ .min_tck = &min_tck_elpida,
+};
+
+void emif_get_device_timings_sdp(u32 emif_nr,
+ const struct lpddr2_device_timings **cs0_device_timings,
+ const struct lpddr2_device_timings **cs1_device_timings)
+{
+ u32 omap_rev = omap_revision();
+
+ /* Identical devices on EMIF1 & EMIF2 */
+ *cs0_device_timings = &elpida_2G_S4_timings;
+
+ if (omap_rev == OMAP4430_ES1_0)
+ *cs1_device_timings = NULL;
+ else
+ *cs1_device_timings = &elpida_2G_S4_timings;
+}
+
+void emif_get_device_timings(u32 emif_nr,
+ const struct lpddr2_device_timings **cs0_device_timings,
+ const struct lpddr2_device_timings **cs1_device_timings)
+ __attribute__((weak, alias("emif_get_device_timings_sdp")));
+
+#endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */
diff --git a/arch/arm/include/asm/arch-omap4/emif.h b/arch/arm/include/asm/arch-omap4/emif.h
index 09e9baa..a167508 100644
--- a/arch/arm/include/asm/arch-omap4/emif.h
+++ b/arch/arm/include/asm/arch-omap4/emif.h
@@ -1019,7 +1019,16 @@ struct emif_regs {
#define emif_assert(c) ({ if (0) hang(); })
#endif
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs);
void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs);
+#else
+void emif_get_device_details(u32 emif_nr,
+ struct lpddr2_device_details *cs0_device_details,
+ struct lpddr2_device_details *cs1_device_details);
+void emif_get_device_timings(u32 emif_nr,
+ const struct lpddr2_device_timings **cs0_device_timings,
+ const struct lpddr2_device_timings **cs1_device_timings);
+#endif
#endif
diff --git a/arch/arm/include/asm/arch-omap4/omap4.h b/arch/arm/include/asm/arch-omap4/omap4.h
index c9c86e1..a8dbedb 100644
--- a/arch/arm/include/asm/arch-omap4/omap4.h
+++ b/arch/arm/include/asm/arch-omap4/omap4.h
@@ -84,12 +84,6 @@
/* GPMC */
#define OMAP44XX_GPMC_BASE 0x50000000
-/* DMM */
-#define OMAP44XX_DMM_BASE 0x4E000000
-#define DMM_LISA_MAP_BASE (OMAP44XX_DMM_BASE + 0x40)
-#define DMM_LISA_MAP_SYS_SIZE_MASK (7 << 20)
-#define DMM_LISA_MAP_SYS_SIZE_SHIFT 20
-#define DMM_LISA_MAP_SYS_ADDR_MASK (0xFF << 24)
/*
* Hardware Register Details
*/
@@ -137,6 +131,10 @@ struct s32ktimer {
#define SRAM_SCRATCH_SPACE_ADDR NON_SECURE_SRAM_START
/* SRAM scratch space entries */
#define OMAP4_SRAM_SCRATCH_OMAP4_REV SRAM_SCRATCH_SPACE_ADDR
+#define OMAP4_SRAM_SCRATCH_EMIF_SIZE (SRAM_SCRATCH_SPACE_ADDR + 0x4)
+#define OMAP4_SRAM_SCRATCH_EMIF_T_NUM (SRAM_SCRATCH_SPACE_ADDR + 0xC)
+#define OMAP4_SRAM_SCRATCH_EMIF_T_DEN (SRAM_SCRATCH_SPACE_ADDR + 0x10)
+#define OMAP4_SRAM_SCRATCH_SPACE_END (SRAM_SCRATCH_SPACE_ADDR + 0x14)
/* Silicon revisions */
#define OMAP4430_SILICON_ID_INVALID 0xFFFFFFFF
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 7183a90..1e62878 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -49,6 +49,7 @@ void bypass_dpll(u32 *const base);
void freq_update_core(void);
u32 get_sys_clk_freq(void);
u32 omap4_ddr_clk(void);
+void cancel_out(u32 *num, u32 *den, u32 den_limit);
void sdram_init(void);
u32 omap4_sdram_size(void);
diff --git a/include/configs/omap4_panda.h b/include/configs/omap4_panda.h
index 1daffb7..9f82ef4 100644
--- a/include/configs/omap4_panda.h
+++ b/include/configs/omap4_panda.h
@@ -237,4 +237,9 @@
#define CONFIG_SYS_PL310_BASE 0x48242000
#endif
+/* Defines for SDRAM init */
+#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+#define CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
+#endif
+
#endif /* __CONFIG_H */
diff --git a/include/configs/omap4_sdp4430.h b/include/configs/omap4_sdp4430.h
index 68ffa87..6df1c3d 100644
--- a/include/configs/omap4_sdp4430.h
+++ b/include/configs/omap4_sdp4430.h
@@ -243,4 +243,9 @@
#define CONFIG_SYS_PL310_BASE 0x48242000
#endif
+/* Defines for SDRAM init */
+#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+#define CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
+#endif
+
#endif /* __CONFIG_H */