projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 46ff4f11 KG |
1 | /* |
| 2 | * Copyright 2008 Freescale Semiconductor, Inc. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License | |
| 6 | * Version 2 as published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| 9 | #include <common.h> | |
| 10 | #include <asm/io.h> | |
| 11 | #include <asm/fsl_ddr_sdram.h> | |
| 12 | ||
| 13 | #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4) | |
| 14 | #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL | |
| 15 | #endif | |
| 16 | ||
| 17 | void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, | |
| 18 | unsigned int ctrl_num) | |
| 19 | { | |
| 20 | unsigned int i; | |
| 21 | volatile ccsr_ddr_t *ddr; | |
| 22 | ||
| 23 | switch (ctrl_num) { | |
| 24 | case 0: | |
| 6d0f6bcf | 25 | ddr = (void *)CONFIG_SYS_MPC86xx_DDR_ADDR; |
| 46ff4f11 KG |
26 | break; |
| 27 | case 1: | |
| 6d0f6bcf | 28 | ddr = (void *)CONFIG_SYS_MPC86xx_DDR2_ADDR; |
| 46ff4f11 KG |
29 | break; |
| 30 | default: | |
| 31 | printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num); | |
| 32 | return; | |
| 33 | } | |
| 34 | ||
| 35 | for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) { | |
| 36 | if (i == 0) { | |
| 46ff4f11 KG |
37 | out_be32(&ddr->cs0_bnds, regs->cs[i].bnds); |
| 38 | out_be32(&ddr->cs0_config, regs->cs[i].config); | |
| 39 | ||
| 40 | } else if (i == 1) { | |
| 41 | out_be32(&ddr->cs1_bnds, regs->cs[i].bnds); | |
| 42 | out_be32(&ddr->cs1_config, regs->cs[i].config); | |
| 43 | ||
| 44 | } else if (i == 2) { | |
| 45 | out_be32(&ddr->cs2_bnds, regs->cs[i].bnds); | |
| 46 | out_be32(&ddr->cs2_config, regs->cs[i].config); | |
| 47 | ||
| 48 | } else if (i == 3) { | |
| 49 | out_be32(&ddr->cs3_bnds, regs->cs[i].bnds); | |
| 50 | out_be32(&ddr->cs3_config, regs->cs[i].config); | |
| 51 | } | |
| 52 | } | |
| 53 | ||
| 54 | out_be32(&ddr->timing_cfg_3, regs->timing_cfg_3); | |
| 55 | out_be32(&ddr->timing_cfg_0, regs->timing_cfg_0); | |
| 56 | out_be32(&ddr->timing_cfg_1, regs->timing_cfg_1); | |
| 57 | out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2); | |
| 58 | out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2); | |
| 59 | out_be32(&ddr->sdram_mode_1, regs->ddr_sdram_mode); | |
| 60 | out_be32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2); | |
| 61 | out_be32(&ddr->sdram_mode_cntl, regs->ddr_sdram_md_cntl); | |
| 62 | out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval); | |
| 63 | out_be32(&ddr->sdram_data_init, regs->ddr_data_init); | |
| 64 | out_be32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl); | |
| 65 | out_be32(&ddr->init_addr, regs->ddr_init_addr); | |
| 66 | out_be32(&ddr->init_ext_addr, regs->ddr_init_ext_addr); | |
| 67 | ||
| 68 | debug("before go\n"); | |
| 69 | ||
| 70 | /* | |
| 71 | * 200 painful micro-seconds must elapse between | |
| 72 | * the DDR clock setup and the DDR config enable. | |
| 73 | */ | |
| 74 | udelay(200); | |
| 75 | asm volatile("sync;isync"); | |
| 76 | ||
| 77 | out_be32(&ddr->sdram_cfg_1, regs->ddr_sdram_cfg); | |
| 78 | ||
| 79 | /* | |
| 80 | * Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done | |
| 81 | */ | |
| 82 | while (in_be32(&ddr->sdram_cfg_2) & 0x10) { | |
| 83 | udelay(10000); /* throttle polling rate */ | |
| 84 | } | |
| 85 | } |