1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2013 Freescale Semiconductor, Inc. 4 */ 5 6 #include <common.h> 7 #include <asm/mmu.h> 8 #include <asm/immap_85xx.h> 9 #include <asm/processor.h> 10 #include <fsl_ddr_sdram.h> 11 #include <fsl_ddr_dimm_params.h> 12 #include <asm/io.h> 13 #include <asm/fsl_law.h> 14 15 /* Fixed sdram init -- doesn't use serial presence detect. */ 16 phys_size_t fixed_sdram(void) 17 { 18 sys_info_t sysinfo; 19 char buf[32]; 20 size_t ddr_size; 21 fsl_ddr_cfg_regs_t ddr_cfg_regs = { 22 .cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS, 23 .cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG, 24 .cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2, 25 #if CONFIG_CHIP_SELECTS_PER_CTRL > 1 26 .cs[1].bnds = CONFIG_SYS_DDR_CS1_BNDS, 27 .cs[1].config = CONFIG_SYS_DDR_CS1_CONFIG, 28 .cs[1].config_2 = CONFIG_SYS_DDR_CS1_CONFIG_2, 29 #endif 30 .timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3, 31 .timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0, 32 .timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1, 33 .timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2, 34 .ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL, 35 .ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2, 36 .ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1, 37 .ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2, 38 .ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL, 39 .ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL, 40 .ddr_data_init = CONFIG_SYS_DDR_DATA_INIT, 41 .ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL, 42 .ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR, 43 .ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR, 44 .timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4, 45 .timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5, 46 .ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL, 47 .ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL, 48 .ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR, 49 .ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1, 50 .ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2 51 }; 52 53 get_sys_info(&sysinfo); 54 printf("Configuring DDR for %s MT/s data rate\n", 55 strmhz(buf, sysinfo.freq_ddrbus)); 56 57 ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024; 58 59 fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0); 60 61 if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE, 62 ddr_size, LAW_TRGT_IF_DDR_1) < 0) { 63 printf("ERROR setting Local Access Windows for DDR\n"); 64 return 0; 65 }; 66 67 return ddr_size; 68 } 69