board/mpl/vcma9/vcma9.c

   1 /*
   2  * (C) Copyright 2002
   3  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   4  * Marius Groeger <mgroeger@sysgo.de>
   5  *
   6  * (C) Copyright 2002
   7  * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <s3c2410.h>
  30 #include <i2c.h>
  31
  32 #include "vcma9.h"
  33 #include "../common/common_util.h"
  34
  35 /* ------------------------------------------------------------------------- */
  36
  37 #define FCLK_SPEED 1
  38
  39 #if FCLK_SPEED==0               /* Fout = 203MHz, Fin = 12MHz for Audio */
  40 #define M_MDIV  0xC3
  41 #define M_PDIV  0x4
  42 #define M_SDIV  0x1
  43 #elif FCLK_SPEED==1             /* Fout = 202.8MHz */
  44 #define M_MDIV  0xA1
  45 #define M_PDIV  0x3
  46 #define M_SDIV  0x1
  47 #endif
  48
  49 #define USB_CLOCK 1
  50
  51 #if USB_CLOCK==0
  52 #define U_M_MDIV        0xA1
  53 #define U_M_PDIV        0x3
  54 #define U_M_SDIV        0x1
  55 #elif USB_CLOCK==1
  56 #define U_M_MDIV        0x48
  57 #define U_M_PDIV        0x3
  58 #define U_M_SDIV        0x2
  59 #endif
  60
  61 static inline void delay(unsigned long loops)
  62 {
  63         __asm__ volatile ("1:\n"
  64           "subs %0, %1, #1\n"
  65           "bne 1b":"=r" (loops):"0" (loops));
  66 }
  67
  68 /*
  69  * Miscellaneous platform dependent initialisations
  70  */
  71
  72 int board_init(void)
  73 {
  74         DECLARE_GLOBAL_DATA_PTR;
  75
  76         /* to reduce PLL lock time, adjust the LOCKTIME register */
  77         rLOCKTIME = 0xFFFFFF;
  78
  79         /* configure MPLL */
  80         rMPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
  81
  82         /* some delay between MPLL and UPLL */
  83         delay (4000);
  84
  85         /* configure UPLL */
  86         rUPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
  87
  88         /* some delay between MPLL and UPLL */
  89         delay (8000);
  90
  91         /* set up the I/O ports */
  92         rGPACON = 0x007FFFFF;
  93         rGPBCON = 0x002AAAAA;
  94         rGPBUP = 0x000002BF;
  95         rGPCCON = 0xAAAAAAAA;
  96         rGPCUP = 0x0000FFFF;
  97         rGPDCON = 0xAAAAAAAA;
  98         rGPDUP = 0x0000FFFF;
  99         rGPECON = 0xAAAAAAAA;
 100         rGPEUP = 0x000037F7;
 101         rGPFCON = 0x00000000;
 102         rGPFUP = 0x00000000;
 103         rGPGCON = 0xFFEAFF5A;
 104         rGPGUP = 0x0000F0DC;
 105         rGPHCON = 0x0028AAAA;
 106         rGPHUP = 0x00000656;
 107
 108         /* setup correct IRQ modes for NIC */
 109         rEXTINT2 = (rEXTINT2 & ~(7<<8)) | (4<<8); /* rising edge mode */
 110
 111         /* init serial */
 112         gd->baudrate = CONFIG_BAUDRATE;
 113         gd->have_console = 1;
 114         serial_init();
 115
 116         /* arch number of VCMA9-Board */
 117         gd->bd->bi_arch_number = 227;
 118
 119         /* adress of boot parameters */
 120         gd->bd->bi_boot_params = 0x30000100;
 121
 122         icache_enable();
 123         dcache_enable();
 124
 125         return 0;
 126 }
 127
 128 int dram_init(void)
 129 {
 130         DECLARE_GLOBAL_DATA_PTR;
 131
 132         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 133         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 134
 135         return 0;
 136 }
 137
 138 /*
 139  * Get some Board/PLD Info
 140  */
 141
 142 static uchar Get_PLD_ID(void)
 143 {
 144         return(*(volatile uchar *)PLD_ID_REG);
 145 }
 146
 147 static uchar Get_PLD_BOARD(void)
 148 {
 149         return(*(volatile uchar *)PLD_BOARD_REG);
 150 }
 151
 152 static uchar Get_PLD_Version(void)
 153 {
 154         return((Get_PLD_ID() >> 4) & 0x0F);
 155 }
 156
 157 static uchar Get_PLD_Revision(void)
 158 {
 159         return(Get_PLD_ID() & 0x0F);
 160 }
 161
 162 static int Get_Board_Config(void)
 163 {
 164         uchar config = Get_PLD_BOARD() & 0x03;
 165
 166         if (config == 3)
 167             return 1;
 168         else
 169             return 0;
 170 }
 171
 172 static uchar Get_Board_PCB(void)
 173 {
 174         return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
 175 }
 176
 177 /* ------------------------------------------------------------------------- */
 178
 179 /*
 180  * Check Board Identity:
 181  */
 182
 183 int checkboard(void)
 184 {
 185         unsigned char s[50];
 186         unsigned char bc, var, rc;
 187         int i;
 188         backup_t *b = (backup_t *) s;
 189
 190         puts("Board: ");
 191
 192         i = getenv_r("serial#", s, 32);
 193         if ((i < 0) || strncmp (s, "VCMA9", 5)) {
 194                 get_backup_values (b);
 195                 if (strncmp (b->signature, "MPL\0", 4) != 0) {
 196                         puts ("### No HW ID - assuming VCMA9");
 197                 } else {
 198                         b->serial_name[5] = 0;
 199                         printf ("%s-%d Rev %c SN: %s", b->serial_name, Get_Board_Config(),
 200                                         Get_Board_PCB(), &b->serial_name[6]);
 201                 }
 202         } else {
 203                 s[5] = 0;
 204                 printf ("%s-%d Rev %c SN: %s", s, Get_Board_Config(), Get_Board_PCB(),
 205                                 &s[6]);
 206         }
 207         printf("\n");
 208         return(0);
 209 }
 210
 211
 212
 213 void print_vcma9_rev(void)
 214 {
 215         printf("Board: VCMA9-%d Rev: %c (PLD Ver: %d, Rev: %d)\n",
 216                 Get_Board_Config(), Get_Board_PCB(),
 217                 Get_PLD_Version(), Get_PLD_Revision());
 218 }
 219
 220
 221 int last_stage_init(void)
 222 {
 223         print_vcma9_rev();
 224         show_stdio_dev();
 225         check_env();
 226         return 0;
 227 }
 228
 229 /***************************************************************************
 230  * some helping routines
 231  */
 232
 233 int overwrite_console(void)
 234 {
 235         /* return TRUE if console should be overwritten */
 236         return 0;
 237 }
 238
 239
 240 /************************************************************************
 241 * Print VCMA9 Info
 242 ************************************************************************/
 243 void print_vcma9_info(void)
 244 {
 245     print_vcma9_rev();
 246 }
 247
 248