2 * sbc8349.c -- WindRiver SBC8349 board support.
3 * Copyright (c) 2006-2007 Wind River Systems, Inc.
5 * Paul Gortmaker <paul.gortmaker@windriver.com>
6 * Based on board/mpc8349emds/mpc8349emds.c (and previous 834x releases.)
8 * SPDX-License-Identifier: GPL-2.0+
14 #include <asm/mpc8349_pci.h>
16 #include <spd_sdram.h>
18 #if defined(CONFIG_OF_LIBFDT)
22 int fixed_sdram(void);
23 void sdram_init(void);
25 #if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83xx)
26 void ddr_enable_ecc(unsigned int dram_size);
29 #ifdef CONFIG_BOARD_EARLY_INIT_F
30 int board_early_init_f (void)
36 #define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)
38 phys_size_t initdram (int board_type)
40 volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
43 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
46 /* DDR SDRAM - Main SODIMM */
47 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_BASE & LAWBAR_BAR;
48 #if defined(CONFIG_SPD_EEPROM)
51 msize = fixed_sdram();
54 * Initialize SDRAM if it is on local bus.
58 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
60 * Initialize and enable DDR ECC.
62 ddr_enable_ecc(msize * 1024 * 1024);
64 /* return total bus SDRAM size(bytes) -- DDR */
65 return (msize * 1024 * 1024);
68 #if !defined(CONFIG_SPD_EEPROM)
69 /*************************************************************************
70 * fixed sdram init -- doesn't use serial presence detect.
71 ************************************************************************/
74 volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
75 u32 msize = CONFIG_SYS_DDR_SIZE;
76 u32 ddr_size = msize << 20; /* DDR size in bytes */
77 u32 ddr_size_log2 = __ilog2(msize);
79 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000;
80 im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
82 #if (CONFIG_SYS_DDR_SIZE != 256)
83 #warning Currently any ddr size other than 256 is not supported
86 #if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
87 #warning Chip select bounds is only configurable in 16MB increments
89 im->ddr.csbnds[2].csbnds =
90 ((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
91 (((CONFIG_SYS_DDR_SDRAM_BASE + ddr_size - 1) >>
92 CSBNDS_EA_SHIFT) & CSBNDS_EA);
93 im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;
95 /* currently we use only one CS, so disable the other banks */
96 im->ddr.cs_config[0] = 0;
97 im->ddr.cs_config[1] = 0;
98 im->ddr.cs_config[3] = 0;
100 im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
101 im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
105 #if defined(CONFIG_DDR_2T_TIMING)
108 | SDRAM_CFG_SDRAM_TYPE_DDR1;
109 #if defined (CONFIG_DDR_32BIT)
110 /* for 32-bit mode burst length is 8 */
111 im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);
113 im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
115 im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
118 /* enable DDR controller */
119 im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
122 #endif/*!CONFIG_SYS_SPD_EEPROM*/
125 int checkboard (void)
127 puts("Board: Wind River SBC834x\n");
132 * if board is fitted with SDRAM
134 #if defined(CONFIG_SYS_BR2_PRELIM) \
135 && defined(CONFIG_SYS_OR2_PRELIM) \
136 && defined(CONFIG_SYS_LBLAWBAR2_PRELIM) \
137 && defined(CONFIG_SYS_LBLAWAR2_PRELIM)
139 * Initialize SDRAM memory on the Local Bus.
142 void sdram_init(void)
144 volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
145 volatile fsl_lbc_t *lbc = &immap->im_lbc;
146 uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
148 puts("\n SDRAM on Local Bus: ");
149 print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
152 * Setup SDRAM Base and Option Registers, already done in cpu_init.c
155 /* setup mtrpt, lsrt and lbcr for LB bus */
156 lbc->lbcr = CONFIG_SYS_LBC_LBCR;
157 lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
158 lbc->lsrt = CONFIG_SYS_LBC_LSRT;
162 * Configure the SDRAM controller Machine Mode Register.
164 lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_5; /* 0x40636733; normal operation */
166 lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_1; /* 0x68636733; precharge all the banks */
171 lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_2; /* 0x48636733; auto refresh */
198 /* 0x58636733; mode register write operation */
199 lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_4;
204 lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_5; /* 0x40636733; normal operation */
210 void sdram_init(void)
212 puts(" SDRAM on Local Bus: Disabled in config\n");
216 #if defined(CONFIG_OF_BOARD_SETUP)
217 void ft_board_setup(void *blob, bd_t *bd)
219 ft_cpu_setup(blob, bd);
221 ft_pci_setup(blob, bd);