/*
- * Copyright 2014 Freescale Semiconductor, Inc.
+ * Copyright 2014-2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/processor.h>
#include <fsl_immap.h>
#include <fsl_ddr.h>
+#include <fsl_errata.h>
+
+#if defined(CONFIG_SYS_FSL_ERRATUM_A008511) | \
+ defined(CONFIG_SYS_FSL_ERRATUM_A009803)
+static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
+{
+ int timeout = 1000;
+
+ ddr_out32(ptr, value);
+
+ while (ddr_in32(ptr) & bits) {
+ udelay(100);
+ timeout--;
+ }
+ if (timeout <= 0)
+ puts("Error: wait for clear timeout.\n");
+}
+#endif
#if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
#error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
u32 temp_sdram_cfg;
u32 total_gb_size_per_controller;
int timeout;
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008511
+ u32 temp32, mr6;
+ u32 vref_seq1[3] = {0x80, 0x96, 0x16}; /* for range 1 */
+ u32 vref_seq2[3] = {0xc0, 0xf0, 0x70}; /* for range 2 */
+ u32 *vref_seq = vref_seq1;
+#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009942
+ ulong ddr_freq;
+ u32 tmp;
+#endif
+#ifdef CONFIG_FSL_DDR_BIST
+ u32 mtcr, err_detect, err_sbe;
+ u32 cs0_bnds, cs1_bnds, cs2_bnds, cs3_bnds, cs0_config;
+#endif
+#ifdef CONFIG_FSL_DDR_BIST
+ char buffer[CONFIG_SYS_CBSIZE];
+#endif
switch (ctrl_num) {
case 0:
ddr_out32(&ddr->sdram_mode_15, regs->ddr_sdram_mode_15);
ddr_out32(&ddr->sdram_mode_16, regs->ddr_sdram_mode_16);
ddr_out32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009663
+ ddr_out32(&ddr->sdram_interval,
+ regs->ddr_sdram_interval & ~SDRAM_INTERVAL_BSTOPRE);
+#else
ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
+#endif
ddr_out32(&ddr->sdram_data_init, regs->ddr_data_init);
ddr_out32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
#ifndef CONFIG_SYS_FSL_DDR_EMU
ddr_out32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
ddr_out32(&ddr->ddr_cdr2, regs->ddr_cdr2);
}
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009803
+ /* part 1 of 2 */
+ if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) { /* for RDIMM */
+ ddr_out32(&ddr->ddr_sdram_rcw_2,
+ regs->ddr_sdram_rcw_2 & ~0x0f000000);
+ }
+
+ ddr_out32(&ddr->err_disable, regs->err_disable | DDR_ERR_DISABLE_APED);
+#else
ddr_out32(&ddr->err_disable, regs->err_disable);
+#endif
ddr_out32(&ddr->err_int_en, regs->err_int_en);
for (i = 0; i < 32; i++) {
if (regs->debug[i]) {
ddr_out32(&ddr->debug[i], regs->debug[i]);
}
}
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008378
+ /* Erratum applies when accumulated ECC is used, or DBI is enabled */
+#define IS_ACC_ECC_EN(v) ((v) & 0x4)
+#define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2)
+ if (has_erratum_a008378()) {
+ if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) ||
+ IS_DBI(regs->ddr_sdram_cfg_3))
+ ddr_setbits32(&ddr->debug[28], 0x9 << 20);
+ }
+#endif
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008511
+ /* Part 1 of 2 */
+ /* This erraum only applies to verion 5.2.0 */
+ if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
+ /* Disable DRAM VRef training */
+ ddr_out32(&ddr->ddr_cdr2,
+ regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
+ /* Disable deskew */
+ ddr_out32(&ddr->debug[28], 0x400);
+ /* Disable D_INIT */
+ ddr_out32(&ddr->sdram_cfg_2,
+ regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
+ ddr_out32(&ddr->debug[25], 0x9000);
+ }
+#endif
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009942
+ ddr_freq = get_ddr_freq(ctrl_num) / 1000000;
+ tmp = ddr_in32(&ddr->debug[28]);
+ if (ddr_freq <= 1333)
+ ddr_out32(&ddr->debug[28], tmp | 0x0080006a);
+ else if (ddr_freq <= 1600)
+ ddr_out32(&ddr->debug[28], tmp | 0x0070006f);
+ else if (ddr_freq <= 1867)
+ ddr_out32(&ddr->debug[28], tmp | 0x00700076);
+ else if (ddr_freq <= 2133)
+ ddr_out32(&ddr->debug[28], tmp | 0x0060007b);
+#endif
/*
* For RDIMMs, JEDEC spec requires clocks to be stable before reset is
mb();
isb();
+#if defined(CONFIG_SYS_FSL_ERRATUM_A008511) || \
+ defined(CONFIG_SYS_FSL_ERRATUM_A009803)
+ /* Part 2 of 2 */
+ /* This erraum only applies to verion 5.2.0 */
+ if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
+ /* Wait for idle */
+ timeout = 40;
+ while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
+ (timeout > 0)) {
+ udelay(1000);
+ timeout--;
+ }
+ if (timeout <= 0) {
+ printf("Controler %d timeout, debug_2 = %x\n",
+ ctrl_num, ddr_in32(&ddr->debug[1]));
+ }
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008511
+ /* The vref setting sequence is different for range 2 */
+ if (regs->ddr_cdr2 & DDR_CDR2_VREF_RANGE_2)
+ vref_seq = vref_seq2;
+
+ /* Set VREF */
+ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN))
+ continue;
+
+ mr6 = (regs->ddr_sdram_mode_10 >> 16) |
+ MD_CNTL_MD_EN |
+ MD_CNTL_CS_SEL(i) |
+ MD_CNTL_MD_SEL(6) |
+ 0x00200000;
+ temp32 = mr6 | vref_seq[0];
+ set_wait_for_bits_clear(&ddr->sdram_md_cntl,
+ temp32, MD_CNTL_MD_EN);
+ udelay(1);
+ debug("MR6 = 0x%08x\n", temp32);
+ temp32 = mr6 | vref_seq[1];
+ set_wait_for_bits_clear(&ddr->sdram_md_cntl,
+ temp32, MD_CNTL_MD_EN);
+ udelay(1);
+ debug("MR6 = 0x%08x\n", temp32);
+ temp32 = mr6 | vref_seq[2];
+ set_wait_for_bits_clear(&ddr->sdram_md_cntl,
+ temp32, MD_CNTL_MD_EN);
+ udelay(1);
+ debug("MR6 = 0x%08x\n", temp32);
+ }
+ ddr_out32(&ddr->sdram_md_cntl, 0);
+ ddr_out32(&ddr->debug[28], 0); /* Enable deskew */
+ ddr_out32(&ddr->debug[1], 0x400); /* restart deskew */
+ /* wait for idle */
+ timeout = 40;
+ while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
+ (timeout > 0)) {
+ udelay(1000);
+ timeout--;
+ }
+ if (timeout <= 0) {
+ printf("Controler %d timeout, debug_2 = %x\n",
+ ctrl_num, ddr_in32(&ddr->debug[1]));
+ }
+ /* Restore D_INIT */
+ ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
+#endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009803
+ /* if it's RDIMM */
+ if (regs->ddr_sdram_cfg & SDRAM_CFG_RD_EN) {
+ for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+ if (!(regs->cs[i].config & SDRAM_CS_CONFIG_EN))
+ continue;
+ set_wait_for_bits_clear(&ddr->sdram_md_cntl,
+ MD_CNTL_MD_EN |
+ MD_CNTL_CS_SEL(i) |
+ 0x070000ed,
+ MD_CNTL_MD_EN);
+ udelay(1);
+ }
+ }
+
+ ddr_out32(&ddr->err_disable,
+ regs->err_disable & ~DDR_ERR_DISABLE_APED);
+#endif
+ }
+#endif
+
total_gb_size_per_controller = 0;
for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
if (!(regs->cs[i].config & 0x80000000))
bus_width = 3 - ((ddr_in32(&ddr->sdram_cfg) & SDRAM_CFG_DBW_MASK)
>> SDRAM_CFG_DBW_SHIFT);
timeout = ((total_gb_size_per_controller << (6 - bus_width)) * 100 /
- (get_ddr_freq(0) >> 20)) << 2;
+ (get_ddr_freq(ctrl_num) >> 20)) << 2;
total_gb_size_per_controller >>= 4; /* shift down to gb size */
debug("total %d GB\n", total_gb_size_per_controller);
debug("Need to wait up to %d * 10ms\n", timeout);
if (timeout <= 0)
printf("Waiting for D_INIT timeout. Memory may not work.\n");
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009663
+ ddr_out32(&ddr->sdram_interval, regs->ddr_sdram_interval);
+#endif
+
#ifdef CONFIG_DEEP_SLEEP
if (is_warm_boot()) {
/* exit self-refresh */
ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
}
#endif
+
+#ifdef CONFIG_FSL_DDR_BIST
+#define BIST_PATTERN1 0xFFFFFFFF
+#define BIST_PATTERN2 0x0
+#define BIST_CR 0x80010000
+#define BIST_CR_EN 0x80000000
+#define BIST_CR_STAT 0x00000001
+#define CTLR_INTLV_MASK 0x20000000
+ /* Perform build-in test on memory. Three-way interleaving is not yet
+ * supported by this code. */
+ if (getenv_f("ddr_bist", buffer, CONFIG_SYS_CBSIZE) >= 0) {
+ puts("Running BIST test. This will take a while...");
+ cs0_config = ddr_in32(&ddr->cs0_config);
+ cs0_bnds = ddr_in32(&ddr->cs0_bnds);
+ cs1_bnds = ddr_in32(&ddr->cs1_bnds);
+ cs2_bnds = ddr_in32(&ddr->cs2_bnds);
+ cs3_bnds = ddr_in32(&ddr->cs3_bnds);
+ if (cs0_config & CTLR_INTLV_MASK) {
+ /* set bnds to non-interleaving */
+ ddr_out32(&ddr->cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1);
+ ddr_out32(&ddr->cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1);
+ ddr_out32(&ddr->cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1);
+ ddr_out32(&ddr->cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1);
+ }
+ ddr_out32(&ddr->mtp1, BIST_PATTERN1);
+ ddr_out32(&ddr->mtp2, BIST_PATTERN1);
+ ddr_out32(&ddr->mtp3, BIST_PATTERN2);
+ ddr_out32(&ddr->mtp4, BIST_PATTERN2);
+ ddr_out32(&ddr->mtp5, BIST_PATTERN1);
+ ddr_out32(&ddr->mtp6, BIST_PATTERN1);
+ ddr_out32(&ddr->mtp7, BIST_PATTERN2);
+ ddr_out32(&ddr->mtp8, BIST_PATTERN2);
+ ddr_out32(&ddr->mtp9, BIST_PATTERN1);
+ ddr_out32(&ddr->mtp10, BIST_PATTERN2);
+ mtcr = BIST_CR;
+ ddr_out32(&ddr->mtcr, mtcr);
+ timeout = 100;
+ while (timeout > 0 && (mtcr & BIST_CR_EN)) {
+ mdelay(1000);
+ timeout--;
+ mtcr = ddr_in32(&ddr->mtcr);
+ }
+ if (timeout <= 0)
+ puts("Timeout\n");
+ else
+ puts("Done\n");
+ err_detect = ddr_in32(&ddr->err_detect);
+ err_sbe = ddr_in32(&ddr->err_sbe);
+ if (mtcr & BIST_CR_STAT) {
+ printf("BIST test failed on controller %d.\n",
+ ctrl_num);
+ }
+ if (err_detect || (err_sbe & 0xffff)) {
+ printf("ECC error detected on controller %d.\n",
+ ctrl_num);
+ }
+
+ if (cs0_config & CTLR_INTLV_MASK) {
+ /* restore bnds registers */
+ ddr_out32(&ddr->cs0_bnds, cs0_bnds);
+ ddr_out32(&ddr->cs1_bnds, cs1_bnds);
+ ddr_out32(&ddr->cs2_bnds, cs2_bnds);
+ ddr_out32(&ddr->cs3_bnds, cs3_bnds);
+ }
+ }
+#endif
}
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