| Xie Xiaobo | ac19388 | 2013-06-24 15:01:30 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2013 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/mmu.h> |
| 11 | #include <asm/immap_85xx.h> |
| 12 | #include <asm/processor.h> |
| 13 | #include <asm/fsl_ddr_sdram.h> |
| 14 | #include <asm/fsl_ddr_dimm_params.h> |
| 15 | #include <asm/io.h> |
| 16 | #include <asm/fsl_law.h> |
| 17 | |
| 18 | /* Fixed sdram init -- doesn't use serial presence detect. */ |
| 19 | phys_size_t fixed_sdram(void) |
| 20 | { |
| 21 | sys_info_t sysinfo; |
| 22 | char buf[32]; |
| 23 | size_t ddr_size; |
| 24 | fsl_ddr_cfg_regs_t ddr_cfg_regs = { |
| 25 | .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS, |
| 26 | .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG, |
| 27 | .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2, |
| 28 | #if CONFIG_CHIP_SELECTS_PER_CTRL > 1 |
| 29 | .cs[1].bnds = CONFIG_SYS_DDR_CS1_BNDS, |
| 30 | .cs[1].config = CONFIG_SYS_DDR_CS1_CONFIG, |
| 31 | .cs[1].config_2 = CONFIG_SYS_DDR_CS1_CONFIG_2, |
| 32 | #endif |
| 33 | .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3, |
| 34 | .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0, |
| 35 | .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1, |
| 36 | .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2, |
| 37 | .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL, |
| 38 | .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2, |
| 39 | .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1, |
| 40 | .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2, |
| 41 | .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL, |
| 42 | .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL, |
| 43 | .ddr_data_init = CONFIG_SYS_DDR_DATA_INIT, |
| 44 | .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL, |
| 45 | .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR, |
| 46 | .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR, |
| 47 | .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4, |
| 48 | .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5, |
| 49 | .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL, |
| 50 | .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL, |
| 51 | .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR, |
| 52 | .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1, |
| 53 | .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2 |
| 54 | }; |
| 55 | |
| 56 | get_sys_info(&sysinfo); |
| 57 | printf("Configuring DDR for %s MT/s data rate\n", |
| 58 | strmhz(buf, sysinfo.freqDDRBus)); |
| 59 | |
| 60 | ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024; |
| 61 | |
| 62 | fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0); |
| 63 | |
| 64 | if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE, |
| 65 | ddr_size, LAW_TRGT_IF_DDR_1) < 0) { |
| 66 | printf("ERROR setting Local Access Windows for DDR\n"); |
| 67 | return 0; |
| 68 | }; |
| 69 | |
| 70 | return ddr_size; |
| 71 | } |