uboot/board/sbc8641d/sbc8641d.c
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   1/*
   2 * Copyright 2007 Wind River Systemes, Inc. <www.windriver.com>
   3 * Copyright 2007 Embedded Specialties, Inc.
   4 * Joe Hamman joe.hamman@embeddedspecialties.com
   5 *
   6 * Copyright 2004 Freescale Semiconductor.
   7 * Jeff Brown
   8 * Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
   9 *
  10 * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
  11 *
  12 * SPDX-License-Identifier:     GPL-2.0+
  13 */
  14
  15#include <common.h>
  16#include <command.h>
  17#include <pci.h>
  18#include <asm/processor.h>
  19#include <asm/immap_86xx.h>
  20#include <asm/fsl_pci.h>
  21#include <fsl_ddr_sdram.h>
  22#include <asm/fsl_serdes.h>
  23#include <libfdt.h>
  24#include <fdt_support.h>
  25
  26DECLARE_GLOBAL_DATA_PTR;
  27
  28long int fixed_sdram (void);
  29
  30int board_early_init_f (void)
  31{
  32        return 0;
  33}
  34
  35int checkboard (void)
  36{
  37        puts ("Board: Wind River SBC8641D\n");
  38
  39        return 0;
  40}
  41
  42int dram_init(void)
  43{
  44        long dram_size = 0;
  45
  46#if defined(CONFIG_SPD_EEPROM)
  47        dram_size = fsl_ddr_sdram();
  48#else
  49        dram_size = fixed_sdram ();
  50#endif
  51
  52        debug ("    DDR: ");
  53        gd->ram_size = dram_size;
  54
  55        return 0;
  56}
  57
  58#if defined(CONFIG_SYS_DRAM_TEST)
  59int testdram (void)
  60{
  61        uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
  62        uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
  63        uint *p;
  64
  65        puts ("SDRAM test phase 1:\n");
  66        for (p = pstart; p < pend; p++)
  67                *p = 0xaaaaaaaa;
  68
  69        for (p = pstart; p < pend; p++) {
  70                if (*p != 0xaaaaaaaa) {
  71                        printf ("SDRAM test fails at: %08x\n", (uint) p);
  72                        return 1;
  73                }
  74        }
  75
  76        puts ("SDRAM test phase 2:\n");
  77        for (p = pstart; p < pend; p++)
  78                *p = 0x55555555;
  79
  80        for (p = pstart; p < pend; p++) {
  81                if (*p != 0x55555555) {
  82                        printf ("SDRAM test fails at: %08x\n", (uint) p);
  83                        return 1;
  84                }
  85        }
  86
  87        puts ("SDRAM test passed.\n");
  88        return 0;
  89}
  90#endif
  91
  92#if !defined(CONFIG_SPD_EEPROM)
  93/*
  94 * Fixed sdram init -- doesn't use serial presence detect.
  95 */
  96long int fixed_sdram (void)
  97{
  98#if !defined(CONFIG_SYS_RAMBOOT)
  99        volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
 100        volatile struct ccsr_ddr *ddr = &immap->im_ddr1;
 101
 102        ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS;
 103        ddr->cs1_bnds = CONFIG_SYS_DDR_CS1_BNDS;
 104        ddr->cs2_bnds = CONFIG_SYS_DDR_CS2_BNDS;
 105        ddr->cs3_bnds = CONFIG_SYS_DDR_CS3_BNDS;
 106        ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG;
 107        ddr->cs1_config = CONFIG_SYS_DDR_CS1_CONFIG;
 108        ddr->cs2_config = CONFIG_SYS_DDR_CS2_CONFIG;
 109        ddr->cs3_config = CONFIG_SYS_DDR_CS3_CONFIG;
 110        ddr->timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
 111        ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
 112        ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
 113        ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
 114        ddr->sdram_cfg = CONFIG_SYS_DDR_CFG_1A;
 115        ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CFG_2;
 116        ddr->sdram_mode = CONFIG_SYS_DDR_MODE_1;
 117        ddr->sdram_mode_2 = CONFIG_SYS_DDR_MODE_2;
 118        ddr->sdram_md_cntl = CONFIG_SYS_DDR_MODE_CTL;
 119        ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL;
 120        ddr->sdram_data_init = CONFIG_SYS_DDR_DATA_INIT;
 121        ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL;
 122
 123        asm ("sync;isync");
 124
 125        udelay (500);
 126
 127        ddr->sdram_cfg = CONFIG_SYS_DDR_CFG_1B;
 128        asm ("sync; isync");
 129
 130        udelay (500);
 131        ddr = &immap->im_ddr2;
 132
 133        ddr->cs0_bnds = CONFIG_SYS_DDR2_CS0_BNDS;
 134        ddr->cs1_bnds = CONFIG_SYS_DDR2_CS1_BNDS;
 135        ddr->cs2_bnds = CONFIG_SYS_DDR2_CS2_BNDS;
 136        ddr->cs3_bnds = CONFIG_SYS_DDR2_CS3_BNDS;
 137        ddr->cs0_config = CONFIG_SYS_DDR2_CS0_CONFIG;
 138        ddr->cs1_config = CONFIG_SYS_DDR2_CS1_CONFIG;
 139        ddr->cs2_config = CONFIG_SYS_DDR2_CS2_CONFIG;
 140        ddr->cs3_config = CONFIG_SYS_DDR2_CS3_CONFIG;
 141        ddr->timing_cfg_3 = CONFIG_SYS_DDR2_EXT_REFRESH;
 142        ddr->timing_cfg_0 = CONFIG_SYS_DDR2_TIMING_0;
 143        ddr->timing_cfg_1 = CONFIG_SYS_DDR2_TIMING_1;
 144        ddr->timing_cfg_2 = CONFIG_SYS_DDR2_TIMING_2;
 145        ddr->sdram_cfg = CONFIG_SYS_DDR2_CFG_1A;
 146        ddr->sdram_cfg_2 = CONFIG_SYS_DDR2_CFG_2;
 147        ddr->sdram_mode = CONFIG_SYS_DDR2_MODE_1;
 148        ddr->sdram_mode_2 = CONFIG_SYS_DDR2_MODE_2;
 149        ddr->sdram_md_cntl = CONFIG_SYS_DDR2_MODE_CTL;
 150        ddr->sdram_interval = CONFIG_SYS_DDR2_INTERVAL;
 151        ddr->sdram_data_init = CONFIG_SYS_DDR2_DATA_INIT;
 152        ddr->sdram_clk_cntl = CONFIG_SYS_DDR2_CLK_CTRL;
 153
 154        asm ("sync;isync");
 155
 156        udelay (500);
 157
 158        ddr->sdram_cfg = CONFIG_SYS_DDR2_CFG_1B;
 159        asm ("sync; isync");
 160
 161        udelay (500);
 162#endif
 163        return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 164}
 165#endif                          /* !defined(CONFIG_SPD_EEPROM) */
 166
 167#if defined(CONFIG_PCI)
 168/*
 169 * Initialize PCI Devices, report devices found.
 170 */
 171
 172void pci_init_board(void)
 173{
 174        fsl_pcie_init_board(0);
 175}
 176#endif /* CONFIG_PCI */
 177
 178
 179#if defined(CONFIG_OF_BOARD_SETUP)
 180int ft_board_setup(void *blob, bd_t *bd)
 181{
 182        ft_cpu_setup(blob, bd);
 183
 184        FT_FSL_PCI_SETUP;
 185
 186        return 0;
 187}
 188#endif
 189
 190void sbc8641d_reset_board (void)
 191{
 192        puts ("Resetting board....\n");
 193}
 194
 195/*
 196 * get_board_sys_clk
 197 *      Clock is fixed at 1GHz on this board. Used for CONFIG_SYS_CLK_FREQ
 198 */
 199
 200unsigned long get_board_sys_clk (ulong dummy)
 201{
 202        int i;
 203        ulong val = 0;
 204
 205        i = 5;
 206        i &= 0x07;
 207
 208        switch (i) {
 209        case 0:
 210                val = 33000000;
 211                break;
 212        case 1:
 213                val = 40000000;
 214                break;
 215        case 2:
 216                val = 50000000;
 217                break;
 218        case 3:
 219                val = 66000000;
 220                break;
 221        case 4:
 222                val = 83000000;
 223                break;
 224        case 5:
 225                val = 100000000;
 226                break;
 227        case 6:
 228                val = 134000000;
 229                break;
 230        case 7:
 231                val = 166000000;
 232                break;
 233        }
 234
 235        return val;
 236}
 237
 238void board_reset(void)
 239{
 240#ifdef CONFIG_SYS_RESET_ADDRESS
 241        ulong addr = CONFIG_SYS_RESET_ADDRESS;
 242
 243        /* flush and disable I/D cache */
 244        __asm__ __volatile__ ("mfspr    3, 1008"        ::: "r3");
 245        __asm__ __volatile__ ("ori      5, 5, 0xcc00"   ::: "r5");
 246        __asm__ __volatile__ ("ori      4, 3, 0xc00"    ::: "r4");
 247        __asm__ __volatile__ ("andc     5, 3, 5"        ::: "r5");
 248        __asm__ __volatile__ ("sync");
 249        __asm__ __volatile__ ("mtspr    1008, 4");
 250        __asm__ __volatile__ ("isync");
 251        __asm__ __volatile__ ("sync");
 252        __asm__ __volatile__ ("mtspr    1008, 5");
 253        __asm__ __volatile__ ("isync");
 254        __asm__ __volatile__ ("sync");
 255
 256        /*
 257         * SRR0 has system reset vector, SRR1 has default MSR value
 258         * rfi restores MSR from SRR1 and sets the PC to the SRR0 value
 259         */
 260        __asm__ __volatile__ ("mtspr    26, %0"         :: "r" (addr));
 261        __asm__ __volatile__ ("li       4, (1 << 6)"    ::: "r4");
 262        __asm__ __volatile__ ("mtspr    27, 4");
 263        __asm__ __volatile__ ("rfi");
 264#endif
 265}
 266