Merge branch 'master' of git://git.denx.de/u-boot-samsung
[platform/kernel/u-boot.git] / drivers / ddr / fsl / fsl_ddr_gen4.c
index 49e4688..3349fc5 100644 (file)
 #include <asm/processor.h>
 #include <fsl_immap.h>
 #include <fsl_ddr.h>
+#include <fsl_errata.h>
+#if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \
+       defined(CONFIG_ARM)
+#include <asm/arch/clock.h>
+#endif
 
-#ifdef CONFIG_SYS_FSL_ERRATUM_A008511
+#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;
@@ -23,9 +29,9 @@ static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
                timeout--;
        }
        if (timeout <= 0)
-               puts("Error: A007865 wait for clear timeout.\n");
+               puts("Error: wait for clear timeout.\n");
 }
-#endif /* CONFIG_SYS_FSL_ERRATUM_A008511 */
+#endif
 
 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
@@ -45,15 +51,15 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 {
        unsigned int i, bus_width;
        struct ccsr_ddr __iomem *ddr;
-       u32 temp_sdram_cfg;
+       u32 temp32;
        u32 total_gb_size_per_controller;
        int timeout;
-#if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
-       defined(CONFIG_SYS_FSL_ERRATUM_A008514)
-       u32 *eddrtqcr1;
-#endif
+
 #ifdef CONFIG_SYS_FSL_ERRATUM_A008511
-       u32 temp32, mr6;
+       u32 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_FSL_DDR_BIST
        u32 mtcr, err_detect, err_sbe;
@@ -62,40 +68,23 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 #ifdef CONFIG_FSL_DDR_BIST
        char buffer[CONFIG_SYS_CBSIZE];
 #endif
-
        switch (ctrl_num) {
        case 0:
                ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
-#if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
-       defined(CONFIG_SYS_FSL_ERRATUM_A008514)
-               eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR_ADDR + 0x800;
-#endif
                break;
-#if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
+#if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 1)
        case 1:
                ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR;
-#if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
-       defined(CONFIG_SYS_FSL_ERRATUM_A008514)
-               eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR2_ADDR + 0x800;
-#endif
                break;
 #endif
-#if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
+#if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 2)
        case 2:
                ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
-#if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
-       defined(CONFIG_SYS_FSL_ERRATUM_A008514)
-               eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR3_ADDR + 0x800;
-#endif
                break;
 #endif
-#if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
+#if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 3)
        case 3:
                ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
-#if defined(CONFIG_SYS_FSL_ERRATUM_A008336) || \
-       defined(CONFIG_SYS_FSL_ERRATUM_A008514)
-               eddrtqcr1 = (void *)CONFIG_SYS_FSL_DCSR_DDR4_ADDR + 0x800;
-#endif
                break;
 #endif
        default:
@@ -106,20 +95,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        if (step == 2)
                goto step2;
 
-#ifdef CONFIG_SYS_FSL_ERRATUM_A008336
-#ifdef CONFIG_LS2085A
-       /* A008336 only applies to general DDR controllers */
-       if ((ctrl_num == 0) || (ctrl_num == 1))
-#endif
-               ddr_out32(eddrtqcr1, 0x63b30002);
-#endif
-#ifdef CONFIG_SYS_FSL_ERRATUM_A008514
-#ifdef CONFIG_LS2085A
-       /* A008514 only applies to DP-DDR controler */
-       if (ctrl_num == 2)
-#endif
-               ddr_out32(eddrtqcr1, 0x63b20002);
-#endif
        if (regs->ddr_eor)
                ddr_out32(&ddr->eor, regs->ddr_eor);
 
@@ -181,7 +156,12 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        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
@@ -222,37 +202,70 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
                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_2 & SDRAM_CFG2_AP_EN) {
+               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++) {
+       for (i = 0; i < 64; i++) {
                if (regs->debug[i]) {
                        debug("Write to debug_%d as %08x\n",
                              i+1, 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 (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);
+               /* disable transmit bit deskew */
+               temp32 = ddr_in32(&ddr->debug[28]);
+               temp32 |= DDR_TX_BD_DIS;
+               ddr_out32(&ddr->debug[28], temp32);
                ddr_out32(&ddr->debug[25], 0x9000);
+       } else if (fsl_ddr_get_version(ctrl_num) == 0x50201) {
+               /* Output enable forced off */
+               ddr_out32(&ddr->debug[37], 1 << 31);
+               /* Enable Vref training */
+               ddr_out32(&ddr->ddr_cdr2,
+                         regs->ddr_cdr2 | DDR_CDR2_VREF_TRAIN_EN);
+       } else {
+               debug("Erratum A008511 doesn't apply.\n");
+       }
+#endif
+
+#if defined(CONFIG_SYS_FSL_ERRATUM_A009803) || \
+       defined(CONFIG_SYS_FSL_ERRATUM_A008511)
+       /* Disable D_INIT */
+       ddr_out32(&ddr->sdram_cfg_2,
+                 regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
+#endif
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009801
+       temp32 = ddr_in32(&ddr->debug[25]);
+       temp32 &= ~DDR_CAS_TO_PRE_SUB_MASK;
+       temp32 |= 9 << DDR_CAS_TO_PRE_SUB_SHIFT;
+       ddr_out32(&ddr->debug[25], temp32);
+#endif
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A010165
+       temp32 = get_ddr_freq(ctrl_num) / 1000000;
+       if ((temp32 > 1900) && (temp32 < 2300)) {
+               temp32 = ddr_in32(&ddr->debug[28]);
+               ddr_out32(&ddr->debug[28], temp32 | 0x000a0000);
        }
 #endif
        /*
@@ -270,9 +283,9 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 
 step2:
        /* Set, but do not enable the memory */
-       temp_sdram_cfg = regs->ddr_sdram_cfg;
-       temp_sdram_cfg &= ~(SDRAM_CFG_MEM_EN);
-       ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg);
+       temp32 = regs->ddr_sdram_cfg;
+       temp32 &= ~(SDRAM_CFG_MEM_EN);
+       ddr_out32(&ddr->sdram_cfg, temp32);
 
        /*
         * 500 painful micro-seconds must elapse between
@@ -287,36 +300,43 @@ step2:
 #ifdef CONFIG_DEEP_SLEEP
        if (is_warm_boot()) {
                /* enter self-refresh */
-               temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
-               temp_sdram_cfg |= SDRAM_CFG2_FRC_SR;
-               ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
+               temp32 = ddr_in32(&ddr->sdram_cfg_2);
+               temp32 |= SDRAM_CFG2_FRC_SR;
+               ddr_out32(&ddr->sdram_cfg_2, temp32);
                /* do board specific memory setup */
                board_mem_sleep_setup();
 
-               temp_sdram_cfg = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
+               temp32 = (ddr_in32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
        } else
 #endif
-               temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
+               temp32 = ddr_in32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
        /* Let the controller go */
-       ddr_out32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
+       ddr_out32(&ddr->sdram_cfg, temp32 | SDRAM_CFG_MEM_EN);
        mb();
        isb();
 
-#ifdef CONFIG_SYS_FSL_ERRATUM_A008511
+#if defined(CONFIG_SYS_FSL_ERRATUM_A008511) || \
+       defined(CONFIG_SYS_FSL_ERRATUM_A009803)
        /* Part 2 of 2 */
+       timeout = 40;
+       /* Wait for idle. D_INIT needs to be cleared earlier, or timeout */
+       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
        /* This erraum only applies to verion 5.2.0 */
        if (fsl_ddr_get_version(ctrl_num) == 0x50200) {
-               /* Wait for idle */
-               timeout = 200;
-               while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
-                      (timeout > 0)) {
-                       udelay(100);
-                       timeout--;
-               }
-               if (timeout <= 0) {
-                       printf("Controler %d timeout, debug_2 = %x\n",
-                              ctrl_num, ddr_in32(&ddr->debug[1]));
-               }
+               /* 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))
@@ -327,41 +347,65 @@ step2:
                                 MD_CNTL_CS_SEL(i)                      |
                                 MD_CNTL_MD_SEL(6)                      |
                                 0x00200000;
-                       temp32 = mr6 | 0xc0;
+                       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 | 0xf0;
+                       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 | 0x70;
+                       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 */
+               temp32 = ddr_in32(&ddr->debug[28]);
+               temp32 &= ~DDR_TX_BD_DIS; /* Enable deskew */
+               ddr_out32(&ddr->debug[28], temp32);
                ddr_out32(&ddr->debug[1], 0x400);       /* restart deskew */
                /* wait for idle */
-               timeout = 200;
+               timeout = 40;
                while (!(ddr_in32(&ddr->debug[1]) & 0x2) &&
                       (timeout > 0)) {
-                       udelay(100);
+                       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 (regs->ddr_sdram_cfg_2 & SDRAM_CFG2_AP_EN) {
+               /* 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
+       /* Restore D_INIT */
+       ddr_out32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
+#endif
+
        total_gb_size_per_controller = 0;
        for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
                if (!(regs->cs[i].config & 0x80000000))
@@ -402,12 +446,17 @@ step2:
 
        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 */
-               temp_sdram_cfg = ddr_in32(&ddr->sdram_cfg_2);
-               temp_sdram_cfg &= ~SDRAM_CFG2_FRC_SR;
-               ddr_out32(&ddr->sdram_cfg_2, temp_sdram_cfg);
+               temp32 = ddr_in32(&ddr->sdram_cfg_2);
+               temp32 &= ~SDRAM_CFG2_FRC_SR;
+               ddr_out32(&ddr->sdram_cfg_2, temp32);
        }
 #endif
 
@@ -423,16 +472,16 @@ step2:
        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) {
-                       cs0_bnds = ddr_in32(&cs0_bnds);
-                       cs1_bnds = ddr_in32(&cs1_bnds);
-                       cs2_bnds = ddr_in32(&cs2_bnds);
-                       cs3_bnds = ddr_in32(&cs3_bnds);
                        /* set bnds to non-interleaving */
-                       ddr_out32(&cs0_bnds, (cs0_bnds & 0xfffefffe) >> 1);
-                       ddr_out32(&cs1_bnds, (cs1_bnds & 0xfffefffe) >> 1);
-                       ddr_out32(&cs2_bnds, (cs2_bnds & 0xfffefffe) >> 1);
-                       ddr_out32(&cs3_bnds, (cs3_bnds & 0xfffefffe) >> 1);
+                       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);
@@ -469,10 +518,10 @@ step2:
 
                if (cs0_config & CTLR_INTLV_MASK) {
                        /* restore bnds registers */
-                       ddr_out32(&cs0_bnds, cs0_bnds);
-                       ddr_out32(&cs1_bnds, cs1_bnds);
-                       ddr_out32(&cs2_bnds, cs2_bnds);
-                       ddr_out32(&cs3_bnds, cs3_bnds);
+                       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