drivers/ddr/fsl: Dual-license DDR driver

[u-boot] / drivers / ddr / fsl / mpc85xx_ddr_gen3.c

diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c
index c8050864163a30a0c6e25380c22fe405dbf3b141..e58f76ae65f2b47487af72bf14cf2d8575991843 100644 (file)
--- a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c
+++ b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c
@@ -1,9 +1,7 @@
 /*
  * Copyright 2008-2012 Freescale Semiconductor, Inc.
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * Version 2 as published by the Free Software Foundation.
+ * SPDX-License-Identifier:    GPL-2.0 BSD-3-Clause
  */
 
 #include <common.h>
@@ -15,7 +13,6 @@
 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
 #endif
 
-
 /*
  * regs has the to-be-set values for DDR controller registers
  * ctrl_num is the DDR controller number
@@ -47,17 +44,17 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        case 0:
                ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
                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;
                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;
                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;
                break;
@@ -119,7 +116,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        out_be32(&ddr->timing_cfg_0, regs->timing_cfg_0);
        out_be32(&ddr->timing_cfg_1, regs->timing_cfg_1);
        out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2);
-       out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
        out_be32(&ddr->sdram_mode, regs->ddr_sdram_mode);
        out_be32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
        out_be32(&ddr->sdram_mode_3, regs->ddr_sdram_mode_3);
@@ -132,9 +128,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval);
        out_be32(&ddr->sdram_data_init, regs->ddr_data_init);
        out_be32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
-       out_be32(&ddr->init_addr, regs->ddr_init_addr);
-       out_be32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
-
        out_be32(&ddr->timing_cfg_4, regs->timing_cfg_4);
        out_be32(&ddr->timing_cfg_5, regs->timing_cfg_5);
        out_be32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
@@ -155,7 +148,24 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
        out_be32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
        out_be32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
        out_be32(&ddr->ddr_cdr1, regs->ddr_cdr1);
-       out_be32(&ddr->ddr_cdr2, regs->ddr_cdr2);
+#ifdef CONFIG_DEEP_SLEEP
+       if (is_warm_boot()) {
+               out_be32(&ddr->sdram_cfg_2,
+                        regs->ddr_sdram_cfg_2 & ~SDRAM_CFG2_D_INIT);
+               out_be32(&ddr->init_addr, CONFIG_SYS_SDRAM_BASE);
+               out_be32(&ddr->init_ext_addr, DDR_INIT_ADDR_EXT_UIA);
+
+               /* DRAM VRef will not be trained */
+               out_be32(&ddr->ddr_cdr2,
+                        regs->ddr_cdr2 & ~DDR_CDR2_VREF_TRAIN_EN);
+       } else
+#endif
+       {
+               out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
+               out_be32(&ddr->init_addr, regs->ddr_init_addr);
+               out_be32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
+               out_be32(&ddr->ddr_cdr2, regs->ddr_cdr2);
+       }
        out_be32(&ddr->err_disable, regs->err_disable);
        out_be32(&ddr->err_int_en, regs->err_int_en);
        for (i = 0; i < 32; i++) {
@@ -164,9 +174,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
                        out_be32(&ddr->debug[i], regs->debug[i]);
                }
        }
-#ifdef CONFIG_SYS_FSL_ERRATUM_A_004934
-       out_be32(&ddr->debug[28], 0x30003000);
-#endif
 
 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR_A003474
        out_be32(&ddr->debug[12], 0x00000015);
@@ -374,8 +381,18 @@ step2:
        udelay(500);
        asm volatile("sync;isync");
 
+#ifdef CONFIG_DEEP_SLEEP
+       if (is_warm_boot()) {
+               /* enter self-refresh */
+               setbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_FRC_SR);
+               /* do board specific memory setup */
+               board_mem_sleep_setup();
+               temp_sdram_cfg = (in_be32(&ddr->sdram_cfg) | SDRAM_CFG_BI);
+       } else
+#endif
+               temp_sdram_cfg = (in_be32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI);
+
        /* Let the controller go */
-       temp_sdram_cfg = in_be32(&ddr->sdram_cfg) & ~SDRAM_CFG_BI;
        out_be32(&ddr->sdram_cfg, temp_sdram_cfg | SDRAM_CFG_MEM_EN);
        asm volatile("sync;isync");
 
@@ -404,7 +421,7 @@ step2:
        bus_width = 3 - ((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)) << 1;
+               (get_ddr_freq(ctrl_num) >> 20)) << 1;
 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
        timeout_save = timeout;
 #endif
@@ -516,14 +533,21 @@ step2:
                case 1:
                        out_be32(&ddr->cs1_bnds, regs->cs[csn].bnds);
                        break;
+#if CONFIG_CHIP_SELECTS_PER_CTRL > 2
                case 2:
                        out_be32(&ddr->cs2_bnds, regs->cs[csn].bnds);
                        break;
                case 3:
                        out_be32(&ddr->cs3_bnds, regs->cs[csn].bnds);
                        break;
+#endif
                }
                clrbits_be32(&ddr->sdram_cfg, 0x2);
        }
 #endif /* CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134 */
+#ifdef CONFIG_DEEP_SLEEP
+       if (is_warm_boot())
+               /* exit self-refresh */
+               clrbits_be32(&ddr->sdram_cfg_2, SDRAM_CFG2_FRC_SR);
+#endif
 }