board/siemens/IAD210/IAD210.c

   1 /*
   2  * (C) Copyright 2001
   3  * Paul Geerinckx
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <mpc8xx.h>
  26 #include "atm.h"
  27 #include <i2c.h>
  28
  29 /* ------------------------------------------------------------------------- */
  30
  31 static long int dram_size (long int, long int *, long int);
  32
  33 /* ------------------------------------------------------------------------- */
  34
  35 /* used PLD registers */
  36 #  define PLD_GCR1_REG (unsigned char *) (0x10000000 + 0)
  37 #  define PLD_EXT_RES  (unsigned char *) (0x10000000 + 10)
  38 #  define PLD_EXT_FETH (unsigned char *) (0x10000000 + 11)
  39 #  define PLD_EXT_LED  (unsigned char *) (0x10000000 + 12)
  40 #  define PLD_EXT_X21  (unsigned char *) (0x10000000 + 13)
  41
  42 #define _NOT_USED_      0xFFFFFFFF
  43
  44 const uint sdram_table[] = {
  45         /*
  46          * Single Read. (Offset 0 in UPMA RAM)
  47          */
  48         0xFE2DB004, 0xF0AA7004, 0xF0A5F400, 0xF3AFFC47, /* last */
  49         _NOT_USED_,
  50         /*
  51          * SDRAM Initialization (offset 5 in UPMA RAM)
  52          *
  53          * This is no UPM entry point. The following definition uses
  54          * the remaining space to establish an initialization
  55          * sequence, which is executed by a RUN command.
  56          *
  57          */
  58         0xFFFAF834, 0xFFE5B435, /* last */
  59         _NOT_USED_,
  60         /*
  61          * Burst Read. (Offset 8 in UPMA RAM)
  62          */
  63         0xFE2DB004, 0xF0AF7404, 0xF0AFFC00, 0xF0AFFC00,
  64         0xF0AFFC00, 0xF0AAF800, 0xF1A5E447,     /* last */
  65         _NOT_USED_,
  66         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  67         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  68         /*
  69          * Single Write. (Offset 18 in UPMA RAM)
  70          */
  71         0xFE29B300, 0xF1A27304, 0xFFA5F747,     /* last */
  72         _NOT_USED_,
  73         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  74         /*
  75          * Burst Write. (Offset 20 in UPMA RAM)
  76          */
  77         0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
  78         0xF1AAF804, 0xFFA5F447, /* last */
  79         _NOT_USED_, _NOT_USED_,
  80         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  81         _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
  82         /*
  83          * Refresh  (Offset 30 in UPMA RAM)
  84          */
  85         0xFFAC3884, 0xFFAC3404, 0xFFAFFC04, 0xFFAFFC84,
  86         0xFFAFFC07,             /* last */
  87         _NOT_USED_, _NOT_USED_, _NOT_USED_,
  88         /*
  89          * MRS sequence  (Offset 38 in UPMA RAM)
  90          */
  91         0xFFAAB834, 0xFFA57434, 0xFFAFFC05,     /* last */
  92         _NOT_USED_,
  93         /*
  94          * Exception. (Offset 3c in UPMA RAM)
  95          */
  96         0xFFAFFC04, 0xFFAFFC05, /* last */
  97         _NOT_USED_, _NOT_USED_,
  98 };
  99
 100 /* ------------------------------------------------------------------------- */
 101
 102
 103 long int initdram (int board_type)
 104 {
 105         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 106         volatile memctl8xx_t *memctl = &immap->im_memctl;
 107         volatile iop8xx_t *iop = &immap->im_ioport;
 108         volatile fec_t *fecp = &immap->im_cpm.cp_fec;
 109         long int size;
 110
 111         upmconfig (UPMA, (uint *) sdram_table,
 112                    sizeof (sdram_table) / sizeof (uint));
 113
 114         /*
 115          * Preliminary prescaler for refresh (depends on number of
 116          * banks): This value is selected for four cycles every 62.4 us
 117          * with two SDRAM banks or four cycles every 31.2 us with one
 118          * bank. It will be adjusted after memory sizing.
 119          */
 120         memctl->memc_mptpr = CFG_MPTPR;
 121
 122         memctl->memc_mar = 0x00000088;
 123
 124         /*
 125          * Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at
 126          * preliminary addresses - these have to be modified after the
 127          * SDRAM size has been determined.
 128          */
 129         memctl->memc_or2 = CFG_OR2_PRELIM;
 130         memctl->memc_br2 = CFG_BR2_PRELIM;
 131
 132         memctl->memc_mamr = CFG_MAMR & (~(MAMR_PTAE));  /* no refresh yet */
 133
 134         udelay (200);
 135
 136         /* perform SDRAM initializsation sequence */
 137
 138         memctl->memc_mcr = 0x80004105;  /* SDRAM bank 0 */
 139         udelay (1);
 140         memctl->memc_mcr = 0x80004230;  /* SDRAM bank 0 - execute twice */
 141         udelay (1);
 142
 143         memctl->memc_mcr = 0x80004105;  /* SDRAM precharge */
 144         udelay (1);
 145         memctl->memc_mcr = 0x80004030;  /* SDRAM 16x autorefresh */
 146         udelay (1);
 147         memctl->memc_mcr = 0x80004138;  /* SDRAM upload parameters */
 148         udelay (1);
 149
 150         memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
 151
 152         udelay (1000);
 153
 154         /*
 155          * Check Bank 0 Memory Size for re-configuration
 156          *
 157          */
 158         size = dram_size (CFG_MAMR, (long *) SDRAM_BASE_PRELIM,
 159                           SDRAM_MAX_SIZE);
 160
 161         udelay (1000);
 162
 163
 164         memctl->memc_mamr = CFG_MAMR;
 165         udelay (1000);
 166
 167         /*
 168          * Final mapping
 169          */
 170         memctl->memc_or2 = ((-size) & 0xFFFF0000) | CFG_OR2_PRELIM;
 171         memctl->memc_br2 = ((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V);
 172
 173         udelay (10000);
 174
 175         /* prepare pin multiplexing for fast ethernet */
 176
 177         atmLoad ();
 178         fecp->fec_ecntrl = 0x00000004;  /* rev D3 pinmux SET */
 179         iop->iop_pdpar |= 0x0080;       /* set pin as MII_clock */
 180
 181
 182         return (size);
 183 }
 184
 185 /* ------------------------------------------------------------------------- */
 186
 187 /*
 188  * Check memory range for valid RAM. A simple memory test determines
 189  * the actually available RAM size between addresses `base' and
 190  * `base + maxsize'. Some (not all) hardware errors are detected:
 191  * - short between address lines
 192  * - short between data lines
 193  */
 194
 195 static long int dram_size (long int mamr_value, long int *base,
 196                            long int maxsize)
 197 {
 198         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 199         volatile memctl8xx_t *memctl = &immap->im_memctl;
 200
 201         memctl->memc_mamr = mamr_value;
 202
 203         return (get_ram_size (base, maxsize));
 204 }
 205
 206 /*
 207  * Check Board Identity:
 208  */
 209
 210 int checkboard (void)
 211 {
 212         return (0);
 213 }
 214
 215 void board_serial_init (void)
 216 {
 217         ;                       /* nothing to do here */
 218 }
 219
 220 void board_ether_init (void)
 221 {
 222         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 223         volatile iop8xx_t *iop = &immap->im_ioport;
 224         volatile fec_t *fecp = &immap->im_cpm.cp_fec;
 225
 226         atmLoad ();
 227         fecp->fec_ecntrl = 0x00000004;  /* rev D3 pinmux SET */
 228         iop->iop_pdpar |= 0x0080;       /* set pin as MII_clock */
 229 }
 230
 231 int board_early_init_f (void)
 232 {
 233         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 234         volatile cpmtimer8xx_t *timers = &immap->im_cpmtimer;
 235         volatile memctl8xx_t *memctl = &immap->im_memctl;
 236         volatile iop8xx_t *iop = &immap->im_ioport;
 237
 238         /* configure the LED timing output pins - port A pin 4 */
 239         iop->iop_papar = 0x0800;
 240         iop->iop_padir = 0x0800;
 241
 242         /* start timer 2 for the 4hz LED blink rate */
 243         timers->cpmt_tmr2 = 0xff2c;     /* 4hz for 64mhz */
 244         timers->cpmt_trr2 = 0x000003d0; /* clk/16 , prescale=256 */
 245         timers->cpmt_tgcr = 0x00000810; /* run timer 2 */
 246
 247         /* chip select for PLD access */
 248         memctl->memc_br6 = 0x10000401;
 249         memctl->memc_or6 = 0xFC000908;
 250
 251         /* PLD initial values ( set LEDs, remove reset on LXT) */
 252
 253         *PLD_GCR1_REG = 0x06;
 254         *PLD_EXT_RES = 0xC0;
 255         *PLD_EXT_FETH = 0x40;
 256         *PLD_EXT_LED = 0xFF;
 257         *PLD_EXT_X21 = 0x04;
 258         return 0;
 259 }
 260
 261 void board_get_enetaddr (uchar * addr)
 262 {
 263         int i;
 264         volatile immap_t *immap = (immap_t *) CFG_IMMR;
 265         volatile cpm8xx_t *cpm = &immap->im_cpm;
 266         unsigned int rccrtmp;
 267
 268         char default_mac_addr[] = { 0x00, 0x08, 0x01, 0x02, 0x03, 0x04 };
 269
 270         for (i = 0; i < 6; i++)
 271                 addr[i] = default_mac_addr[i];
 272
 273         printf ("There is an error in the i2c driver .. /n");
 274         printf ("You need to fix it first....../n");
 275
 276         rccrtmp = cpm->cp_rccr;
 277         cpm->cp_rccr |= 0x0020;
 278
 279         i2c_reg_read (0xa0, 0);
 280         printf ("seep = '-%c-%c-%c-%c-%c-%c-'\n",
 281                 i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0),
 282                 i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0),
 283                 i2c_reg_read (0xa0, 0), i2c_reg_read (0xa0, 0));
 284
 285         cpm->cp_rccr = rccrtmp;
 286 }