board/esd/vme8349/vme8349.c

   1 /*
   2  * vme8349.c -- esd VME8349 board support
   3  *
   4  * Copyright (c) 2008-2009 esd gmbh.
   5  *
   6  * (C) Copyright 2006
   7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   8  *
   9  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
  10  * Based on board/mpc8349emds/mpc8349emds.c (and previous 834x releases.)
  11  *
  12  * See file CREDITS for list of people who contributed to this
  13  * project.
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License as
  17  * published by the Free Software Foundation; either version 2 of
  18  * the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  28  * MA 02111-1307 USA
  29  *
  30  */
  31
  32 #include <common.h>
  33 #include <ioports.h>
  34 #include <mpc83xx.h>
  35 #include <asm/mpc8349_pci.h>
  36 #if defined(CONFIG_OF_LIBFDT)
  37 #include <libfdt.h>
  38 #endif
  39 #include <asm/io.h>
  40 #include <asm/mmu.h>
  41 #include <spd.h>
  42 #include <spd_sdram.h>
  43 #include <i2c.h>
  44 #include <netdev.h>
  45
  46 void ddr_enable_ecc(unsigned int dram_size);
  47
  48 phys_size_t initdram(int board_type)
  49 {
  50         volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
  51         u32 msize = 0;
  52
  53         if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
  54                 return -1;
  55
  56         /* DDR SDRAM - Main memory */
  57         im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_BASE & LAWBAR_BAR;
  58
  59         msize = spd_sdram();
  60
  61 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
  62         /*
  63          * Initialize and enable DDR ECC.
  64          */
  65         ddr_enable_ecc(msize * 1024 * 1024);
  66 #endif
  67
  68         /* Now check memory size (after ECC is initialized) */
  69         msize = get_ram_size(0, msize);
  70
  71         /* return total bus SDRAM size(bytes)  -- DDR */
  72         return msize * 1024 * 1024;
  73 }
  74
  75 int checkboard(void)
  76 {
  77 #ifdef VME_CADDY2
  78         puts("Board: esd VME-CADDY/2\n");
  79 #else
  80         puts("Board: esd VME-CPU/8349\n");
  81 #endif
  82
  83         return 0;
  84 }
  85
  86 #ifdef VME_CADDY2
  87 int board_eth_init(bd_t *bis)
  88 {
  89         return pci_eth_init(bis);
  90 }
  91 #endif
  92
  93 #if defined(CONFIG_OF_BOARD_SETUP)
  94 void ft_board_setup(void *blob, bd_t *bd)
  95 {
  96         ft_cpu_setup(blob, bd);
  97
  98 #ifdef CONFIG_PCI
  99         ft_pci_setup(blob, bd);
 100 #endif
 101 }
 102 #endif
 103
 104 int misc_init_r()
 105 {
 106         immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
 107
 108         clrsetbits_be32(&im->im_lbc.lcrr, LBCR_LDIS, 0);
 109
 110         return 0;
 111 }
 112
 113 /*
 114  * Provide SPD values for spd_sdram(). Both boards (VME-CADDY/2
 115  * and VME-CADDY/2) have different SDRAM configurations.
 116  */
 117 #ifdef VME_CADDY2
 118 #define SMALL_RAM       0xff
 119 #define LARGE_RAM       0x00
 120 #else
 121 #define SMALL_RAM       0x00
 122 #define LARGE_RAM       0xff
 123 #endif
 124
 125 #define SPD_VAL(a, b)   (((a) & SMALL_RAM) | ((b) & LARGE_RAM))
 126
 127 static spd_eeprom_t default_spd_eeprom = {
 128         SPD_VAL(0x80, 0x80),    /* 00 use 128 Bytes */
 129         SPD_VAL(0x07, 0x07),    /* 01 use 128 Bytes */
 130         SPD_MEMTYPE_DDR2,       /* 02 type is DDR2 */
 131         SPD_VAL(0x0d, 0x0d),    /* 03 rows: 13 */
 132         SPD_VAL(0x09, 0x0a),    /* 04 cols:  9 / 10 */
 133         SPD_VAL(0x00, 0x00),    /* 05 */
 134         SPD_VAL(0x40, 0x40),    /* 06 */
 135         SPD_VAL(0x00, 0x00),    /* 07 */
 136         SPD_VAL(0x05, 0x05),    /* 08 */
 137         SPD_VAL(0x30, 0x30),    /* 09 */
 138         SPD_VAL(0x45, 0x45),    /* 10 */
 139         SPD_VAL(0x02, 0x02),    /* 11 ecc used */
 140         SPD_VAL(0x82, 0x82),    /* 12 */
 141         SPD_VAL(0x10, 0x10),    /* 13 */
 142         SPD_VAL(0x08, 0x08),    /* 14 */
 143         SPD_VAL(0x00, 0x00),    /* 15 */
 144         SPD_VAL(0x0c, 0x0c),    /* 16 */
 145         SPD_VAL(0x04, 0x08),    /* 17 banks: 4 / 8 */
 146         SPD_VAL(0x38, 0x38),    /* 18 */
 147         SPD_VAL(0x00, 0x00),    /* 19 */
 148         SPD_VAL(0x02, 0x02),    /* 20 */
 149         SPD_VAL(0x00, 0x00),    /* 21 */
 150         SPD_VAL(0x03, 0x03),    /* 22 */
 151         SPD_VAL(0x3d, 0x3d),    /* 23 */
 152         SPD_VAL(0x45, 0x45),    /* 24 */
 153         SPD_VAL(0x50, 0x50),    /* 25 */
 154         SPD_VAL(0x45, 0x45),    /* 26 */
 155         SPD_VAL(0x3c, 0x3c),    /* 27 */
 156         SPD_VAL(0x28, 0x28),    /* 28 */
 157         SPD_VAL(0x3c, 0x3c),    /* 29 */
 158         SPD_VAL(0x2d, 0x2d),    /* 30 */
 159         SPD_VAL(0x20, 0x80),    /* 31 */
 160         SPD_VAL(0x20, 0x20),    /* 32 */
 161         SPD_VAL(0x27, 0x27),    /* 33 */
 162         SPD_VAL(0x10, 0x10),    /* 34 */
 163         SPD_VAL(0x17, 0x17),    /* 35 */
 164         SPD_VAL(0x3c, 0x3c),    /* 36 */
 165         SPD_VAL(0x1e, 0x1e),    /* 37 */
 166         SPD_VAL(0x1e, 0x1e),    /* 38 */
 167         SPD_VAL(0x00, 0x00),    /* 39 */
 168         SPD_VAL(0x00, 0x06),    /* 40 */
 169         SPD_VAL(0x37, 0x37),    /* 41 */
 170         SPD_VAL(0x4b, 0x7f),    /* 42 */
 171         SPD_VAL(0x80, 0x80),    /* 43 */
 172         SPD_VAL(0x18, 0x18),    /* 44 */
 173         SPD_VAL(0x22, 0x22),    /* 45 */
 174         SPD_VAL(0x00, 0x00),    /* 46 */
 175         { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
 176         SPD_VAL(0x10, 0x10),    /* 62 */
 177         SPD_VAL(0x7e, 0x1d),    /* 63 */
 178         { 'e', 's', 'd', '-', 'g', 'm', 'b', 'h' },
 179         SPD_VAL(0x00, 0x00),    /* 72 */
 180 #ifdef VME_CADDY2
 181         { "vme-caddy/2 ram   " }
 182 #else
 183         { "vme-cpu/2 ram     " }
 184 #endif
 185 };
 186
 187 int vme8349_read_spd(uchar chip, uint addr, int alen, uchar *buffer, int len)
 188 {
 189         int old_bus = I2C_GET_BUS();
 190         unsigned int l, sum;
 191         int valid = 0;
 192
 193         I2C_SET_BUS(0);
 194
 195         if (i2c_read(chip, addr, alen, buffer, len) == 0)
 196                 if (memcmp(&buffer[64], &default_spd_eeprom.mid[0], 8) == 0) {
 197                         sum = 0;
 198                         for (l = 0; l < 63; l++)
 199                                 sum = (sum + buffer[l]) & 0xff;
 200                         if (sum == buffer[63])
 201                                 valid = 1;
 202                         else
 203                                 printf("Invalid checksum in EEPROM %02x %02x\n",
 204                                        sum, buffer[63]);
 205                 }
 206
 207         if (valid == 0) {
 208                 memcpy(buffer, (void *)&default_spd_eeprom, len);
 209                 sum = 0;
 210                 for (l = 0; l < 63; l++)
 211                         sum = (sum + buffer[l]) & 0xff;
 212                 if (sum != buffer[63])
 213                         printf("Invalid checksum in FLASH %02x %02x\n",
 214                                sum, buffer[63]);
 215                 buffer[63] = sum;
 216         }
 217
 218         I2C_SET_BUS(old_bus);
 219
 220         return 0;
 221 }