1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * sbc8349.c -- WindRiver SBC8349 board support. 4 * Copyright (c) 2006-2007 Wind River Systems, Inc. 5 * 6 * Paul Gortmaker <paul.gortmaker@windriver.com> 7 * Based on board/mpc8349emds/mpc8349emds.c (and previous 834x releases.) 8 */ 9 10#include <common.h> 11#include <ioports.h> 12#include <mpc83xx.h> 13#include <asm/mpc8349_pci.h> 14#include <i2c.h> 15#include <spd_sdram.h> 16#include <miiphy.h> 17#if defined(CONFIG_OF_LIBFDT) 18#include <linux/libfdt.h> 19#endif 20 21DECLARE_GLOBAL_DATA_PTR; 22 23int fixed_sdram(void); 24void sdram_init(void); 25 26#if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83xx) 27void ddr_enable_ecc(unsigned int dram_size); 28#endif 29 30#ifdef CONFIG_BOARD_EARLY_INIT_F 31int board_early_init_f (void) 32{ 33 return 0; 34} 35#endif 36 37#define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1) 38 39int dram_init(void) 40{ 41 volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR; 42 u32 msize = 0; 43 44 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im) 45 return -1; 46 47 /* DDR SDRAM - Main SODIMM */ 48 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & LAWBAR_BAR; 49#if defined(CONFIG_SPD_EEPROM) 50 msize = spd_sdram(); 51#else 52 msize = fixed_sdram(); 53#endif 54 /* 55 * Initialize SDRAM if it is on local bus. 56 */ 57 sdram_init(); 58 59#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) 60 /* 61 * Initialize and enable DDR ECC. 62 */ 63 ddr_enable_ecc(msize * 1024 * 1024); 64#endif 65 /* set total bus SDRAM size(bytes) -- DDR */ 66 gd->ram_size = msize * 1024 * 1024; 67 68 return 0; 69} 70 71#if !defined(CONFIG_SPD_EEPROM) 72/************************************************************************* 73 * fixed sdram init -- doesn't use serial presence detect. 74 ************************************************************************/ 75int fixed_sdram(void) 76{ 77 volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR; 78 u32 msize = CONFIG_SYS_DDR_SIZE; 79 u32 ddr_size = msize << 20; /* DDR size in bytes */ 80 u32 ddr_size_log2 = __ilog2(msize); 81 82 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000; 83 im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE); 84 85#if (CONFIG_SYS_DDR_SIZE != 256) 86#warning Currently any ddr size other than 256 is not supported 87#endif 88 89#if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0) 90#warning Chip select bounds is only configurable in 16MB increments 91#endif 92 im->ddr.csbnds[2].csbnds = 93 ((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) | 94 (((CONFIG_SYS_SDRAM_BASE + ddr_size - 1) >> 95 CSBNDS_EA_SHIFT) & CSBNDS_EA); 96 im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG; 97 98 /* currently we use only one CS, so disable the other banks */ 99 im->ddr.cs_config[0] = 0; 100 im->ddr.cs_config[1] = 0; 101 im->ddr.cs_config[3] = 0; 102 103 im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1; 104 im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2; 105 106 im->ddr.sdram_cfg = 107 SDRAM_CFG_SREN 108#if defined(CONFIG_DDR_2T_TIMING) 109 | SDRAM_CFG_2T_EN 110#endif 111 | SDRAM_CFG_SDRAM_TYPE_DDR1; 112#if defined (CONFIG_DDR_32BIT) 113 /* for 32-bit mode burst length is 8 */ 114 im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE); 115#endif 116 im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE; 117 118 im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL; 119 udelay(200); 120 121 /* enable DDR controller */ 122 im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN; 123 return msize; 124} 125#endif/*!CONFIG_SYS_SPD_EEPROM*/ 126 127 128int checkboard (void) 129{ 130 puts("Board: Wind River SBC834x\n"); 131 return 0; 132} 133 134/* 135 * if board is fitted with SDRAM 136 */ 137#if defined(CONFIG_SYS_BR2_PRELIM) \ 138 && defined(CONFIG_SYS_OR2_PRELIM) \ 139 && defined(CONFIG_SYS_LBLAWBAR2_PRELIM) \ 140 && defined(CONFIG_SYS_LBLAWAR2_PRELIM) 141/* 142 * Initialize SDRAM memory on the Local Bus. 143 */ 144 145void sdram_init(void) 146{ 147 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; 148 volatile fsl_lbc_t *lbc = &immap->im_lbc; 149 uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE; 150 const u32 lsdmr_common = LSDMR_RFEN | LSDMR_BSMA1516 | LSDMR_RFCR8 | 151 LSDMR_PRETOACT6 | LSDMR_ACTTORW3 | LSDMR_BL8 | 152 LSDMR_WRC3 | LSDMR_CL3; 153 154 puts("\n SDRAM on Local Bus: "); 155 print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n"); 156 157 /* 158 * Setup SDRAM Base and Option Registers, already done in cpu_init.c 159 */ 160 161 /* setup mtrpt, lsrt and lbcr for LB bus */ 162 lbc->lbcr = 0x00000000; 163 /* LB refresh timer prescal, 266MHz/32 */ 164 lbc->mrtpr = 0x20000000; 165 /* LB sdram refresh timer, about 6us */ 166 lbc->lsrt = 0x32000000; 167 asm("sync"); 168 169 /* 170 * Configure the SDRAM controller Machine Mode Register. 171 */ 172 /* 0x40636733; normal operation */ 173 lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL; 174 175 /* 0x68636733; precharge all the banks */ 176 lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL; 177 asm("sync"); 178 *sdram_addr = 0xff; 179 udelay(100); 180 181 /* 0x48636733; auto refresh */ 182 lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH; 183 asm("sync"); 184 /*1 times*/ 185 *sdram_addr = 0xff; 186 udelay(100); 187 /*2 times*/ 188 *sdram_addr = 0xff; 189 udelay(100); 190 /*3 times*/ 191 *sdram_addr = 0xff; 192 udelay(100); 193 /*4 times*/ 194 *sdram_addr = 0xff; 195 udelay(100); 196 /*5 times*/ 197 *sdram_addr = 0xff; 198 udelay(100); 199 /*6 times*/ 200 *sdram_addr = 0xff; 201 udelay(100); 202 /*7 times*/ 203 *sdram_addr = 0xff; 204 udelay(100); 205 /*8 times*/ 206 *sdram_addr = 0xff; 207 udelay(100); 208 209 /* 0x58636733; mode register write operation */ 210 lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW; 211 asm("sync"); 212 *sdram_addr = 0xff; 213 udelay(100); 214 215 /* 0x40636733; normal operation */ 216 lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL; 217 asm("sync"); 218 *sdram_addr = 0xff; 219 udelay(100); 220} 221#else 222void sdram_init(void) 223{ 224 puts(" SDRAM on Local Bus: Disabled in config\n"); 225} 226#endif 227 228#if defined(CONFIG_OF_BOARD_SETUP) 229int ft_board_setup(void *blob, bd_t *bd) 230{ 231 ft_cpu_setup(blob, bd); 232#ifdef CONFIG_PCI 233 ft_pci_setup(blob, bd); 234#endif 235 236 return 0; 237} 238#endif 239