uboot/board/sbc8641d/sbc8641d.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2007 Wind River Systemes, Inc. <www.windriver.com>
   4 * Copyright 2007 Embedded Specialties, Inc.
   5 * Joe Hamman joe.hamman@embeddedspecialties.com
   6 *
   7 * Copyright 2004 Freescale Semiconductor.
   8 * Jeff Brown
   9 * Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
  10 *
  11 * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
  12 */
  13
  14#include <common.h>
  15#include <command.h>
  16#include <pci.h>
  17#include <asm/processor.h>
  18#include <asm/immap_86xx.h>
  19#include <asm/fsl_pci.h>
  20#include <fsl_ddr_sdram.h>
  21#include <asm/fsl_serdes.h>
  22#include <linux/libfdt.h>
  23#include <fdt_support.h>
  24
  25DECLARE_GLOBAL_DATA_PTR;
  26
  27long int fixed_sdram (void);
  28
  29int board_early_init_f (void)
  30{
  31        return 0;
  32}
  33
  34int checkboard (void)
  35{
  36        puts ("Board: Wind River SBC8641D\n");
  37
  38        return 0;
  39}
  40
  41int dram_init(void)
  42{
  43        long dram_size = 0;
  44
  45#if defined(CONFIG_SPD_EEPROM)
  46        dram_size = fsl_ddr_sdram();
  47#else
  48        dram_size = fixed_sdram ();
  49#endif
  50
  51        debug ("    DDR: ");
  52        gd->ram_size = dram_size;
  53
  54        return 0;
  55}
  56
  57#if defined(CONFIG_SYS_DRAM_TEST)
  58int testdram (void)
  59{
  60        uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
  61        uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
  62        uint *p;
  63
  64        puts ("SDRAM test phase 1:\n");
  65        for (p = pstart; p < pend; p++)
  66                *p = 0xaaaaaaaa;
  67
  68        for (p = pstart; p < pend; p++) {
  69                if (*p != 0xaaaaaaaa) {
  70                        printf ("SDRAM test fails at: %08x\n", (uint) p);
  71                        return 1;
  72                }
  73        }
  74
  75        puts ("SDRAM test phase 2:\n");
  76        for (p = pstart; p < pend; p++)
  77                *p = 0x55555555;
  78
  79        for (p = pstart; p < pend; p++) {
  80                if (*p != 0x55555555) {
  81                        printf ("SDRAM test fails at: %08x\n", (uint) p);
  82                        return 1;
  83                }
  84        }
  85
  86        puts ("SDRAM test passed.\n");
  87        return 0;
  88}
  89#endif
  90
  91#if !defined(CONFIG_SPD_EEPROM)
  92/*
  93 * Fixed sdram init -- doesn't use serial presence detect.
  94 */
  95long int fixed_sdram (void)
  96{
  97#if !defined(CONFIG_SYS_RAMBOOT)
  98        volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
  99        volatile struct ccsr_ddr *ddr = &immap->im_ddr1;
 100
 101        ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS;
 102        ddr->cs1_bnds = CONFIG_SYS_DDR_CS1_BNDS;
 103        ddr->cs2_bnds = CONFIG_SYS_DDR_CS2_BNDS;
 104        ddr->cs3_bnds = CONFIG_SYS_DDR_CS3_BNDS;
 105        ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG;
 106        ddr->cs1_config = CONFIG_SYS_DDR_CS1_CONFIG;
 107        ddr->cs2_config = CONFIG_SYS_DDR_CS2_CONFIG;
 108        ddr->cs3_config = CONFIG_SYS_DDR_CS3_CONFIG;
 109        ddr->timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
 110        ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
 111        ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
 112        ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
 113        ddr->sdram_cfg = CONFIG_SYS_DDR_CFG_1A;
 114        ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CFG_2;
 115        ddr->sdram_mode = CONFIG_SYS_DDR_MODE_1;
 116        ddr->sdram_mode_2 = CONFIG_SYS_DDR_MODE_2;
 117        ddr->sdram_md_cntl = CONFIG_SYS_DDR_MODE_CTL;
 118        ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL;
 119        ddr->sdram_data_init = CONFIG_SYS_DDR_DATA_INIT;
 120        ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL;
 121
 122        asm ("sync;isync");
 123
 124        udelay (500);
 125
 126        ddr->sdram_cfg = CONFIG_SYS_DDR_CFG_1B;
 127        asm ("sync; isync");
 128
 129        udelay (500);
 130        ddr = &immap->im_ddr2;
 131
 132        ddr->cs0_bnds = CONFIG_SYS_DDR2_CS0_BNDS;
 133        ddr->cs1_bnds = CONFIG_SYS_DDR2_CS1_BNDS;
 134        ddr->cs2_bnds = CONFIG_SYS_DDR2_CS2_BNDS;
 135        ddr->cs3_bnds = CONFIG_SYS_DDR2_CS3_BNDS;
 136        ddr->cs0_config = CONFIG_SYS_DDR2_CS0_CONFIG;
 137        ddr->cs1_config = CONFIG_SYS_DDR2_CS1_CONFIG;
 138        ddr->cs2_config = CONFIG_SYS_DDR2_CS2_CONFIG;
 139        ddr->cs3_config = CONFIG_SYS_DDR2_CS3_CONFIG;
 140        ddr->timing_cfg_3 = CONFIG_SYS_DDR2_EXT_REFRESH;
 141        ddr->timing_cfg_0 = CONFIG_SYS_DDR2_TIMING_0;
 142        ddr->timing_cfg_1 = CONFIG_SYS_DDR2_TIMING_1;
 143        ddr->timing_cfg_2 = CONFIG_SYS_DDR2_TIMING_2;
 144        ddr->sdram_cfg = CONFIG_SYS_DDR2_CFG_1A;
 145        ddr->sdram_cfg_2 = CONFIG_SYS_DDR2_CFG_2;
 146        ddr->sdram_mode = CONFIG_SYS_DDR2_MODE_1;
 147        ddr->sdram_mode_2 = CONFIG_SYS_DDR2_MODE_2;
 148        ddr->sdram_md_cntl = CONFIG_SYS_DDR2_MODE_CTL;
 149        ddr->sdram_interval = CONFIG_SYS_DDR2_INTERVAL;
 150        ddr->sdram_data_init = CONFIG_SYS_DDR2_DATA_INIT;
 151        ddr->sdram_clk_cntl = CONFIG_SYS_DDR2_CLK_CTRL;
 152
 153        asm ("sync;isync");
 154
 155        udelay (500);
 156
 157        ddr->sdram_cfg = CONFIG_SYS_DDR2_CFG_1B;
 158        asm ("sync; isync");
 159
 160        udelay (500);
 161#endif
 162        return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 163}
 164#endif                          /* !defined(CONFIG_SPD_EEPROM) */
 165
 166#if defined(CONFIG_PCI)
 167/*
 168 * Initialize PCI Devices, report devices found.
 169 */
 170
 171void pci_init_board(void)
 172{
 173        fsl_pcie_init_board(0);
 174}
 175#endif /* CONFIG_PCI */
 176
 177
 178#if defined(CONFIG_OF_BOARD_SETUP)
 179int ft_board_setup(void *blob, bd_t *bd)
 180{
 181        ft_cpu_setup(blob, bd);
 182
 183        FT_FSL_PCI_SETUP;
 184
 185        return 0;
 186}
 187#endif
 188
 189void sbc8641d_reset_board (void)
 190{
 191        puts ("Resetting board....\n");
 192}
 193
 194/*
 195 * get_board_sys_clk
 196 *      Clock is fixed at 1GHz on this board. Used for CONFIG_SYS_CLK_FREQ
 197 */
 198
 199unsigned long get_board_sys_clk (ulong dummy)
 200{
 201        int i;
 202        ulong val = 0;
 203
 204        i = 5;
 205        i &= 0x07;
 206
 207        switch (i) {
 208        case 0:
 209                val = 33000000;
 210                break;
 211        case 1:
 212                val = 40000000;
 213                break;
 214        case 2:
 215                val = 50000000;
 216                break;
 217        case 3:
 218                val = 66000000;
 219                break;
 220        case 4:
 221                val = 83000000;
 222                break;
 223        case 5:
 224                val = 100000000;
 225                break;
 226        case 6:
 227                val = 134000000;
 228                break;
 229        case 7:
 230                val = 166000000;
 231                break;
 232        }
 233
 234        return val;
 235}
 236
 237void board_reset(void)
 238{
 239#ifdef CONFIG_SYS_RESET_ADDRESS
 240        ulong addr = CONFIG_SYS_RESET_ADDRESS;
 241
 242        /* flush and disable I/D cache */
 243        __asm__ __volatile__ ("mfspr    3, 1008"        ::: "r3");
 244        __asm__ __volatile__ ("ori      5, 5, 0xcc00"   ::: "r5");
 245        __asm__ __volatile__ ("ori      4, 3, 0xc00"    ::: "r4");
 246        __asm__ __volatile__ ("andc     5, 3, 5"        ::: "r5");
 247        __asm__ __volatile__ ("sync");
 248        __asm__ __volatile__ ("mtspr    1008, 4");
 249        __asm__ __volatile__ ("isync");
 250        __asm__ __volatile__ ("sync");
 251        __asm__ __volatile__ ("mtspr    1008, 5");
 252        __asm__ __volatile__ ("isync");
 253        __asm__ __volatile__ ("sync");
 254
 255        /*
 256         * SRR0 has system reset vector, SRR1 has default MSR value
 257         * rfi restores MSR from SRR1 and sets the PC to the SRR0 value
 258         */
 259        __asm__ __volatile__ ("mtspr    26, %0"         :: "r" (addr));
 260        __asm__ __volatile__ ("li       4, (1 << 6)"    ::: "r4");
 261        __asm__ __volatile__ ("mtspr    27, 4");
 262        __asm__ __volatile__ ("rfi");
 263#endif
 264}
 265