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         S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
  76         S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
  77
  78         /* to reduce PLL lock time, adjust the LOCKTIME register */
  79         clk_power->LOCKTIME = 0xFFFFFF;
  80
  81         /* configure MPLL */
  82         clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
  83
  84         /* some delay between MPLL and UPLL */
  85         delay (4000);
  86
  87         /* configure UPLL */
  88         clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
  89
  90         /* some delay between MPLL and UPLL */
  91         delay (8000);
  92
  93         /* set up the I/O ports */
  94         gpio->GPACON = 0x007FFFFF;
  95         gpio->GPBCON = 0x002AAAAA;
  96         gpio->GPBUP = 0x000002BF;
  97         gpio->GPCCON = 0xAAAAAAAA;
  98         gpio->GPCUP = 0x0000FFFF;
  99         gpio->GPDCON = 0xAAAAAAAA;
 100         gpio->GPDUP = 0x0000FFFF;
 101         gpio->GPECON = 0xAAAAAAAA;
 102         gpio->GPEUP = 0x000037F7;
 103         gpio->GPFCON = 0x00000000;
 104         gpio->GPFUP = 0x00000000;
 105         gpio->GPGCON = 0xFFEAFF5A;
 106         gpio->GPGUP = 0x0000F0DC;
 107         gpio->GPHCON = 0x0028AAAA;
 108         gpio->GPHUP = 0x00000656;
 109
 110         /* setup correct IRQ modes for NIC */
 111         gpio->EXTINT2 = (gpio->EXTINT2 & ~(7<<8)) | (4<<8); /* rising edge mode */
 112
 113         /* select USB port 2 to be host or device (fix to host for now) */
 114         gpio->MISCCR |= 0x08;
 115
 116         /* init serial */
 117         gd->baudrate = CONFIG_BAUDRATE;
 118         gd->have_console = 1;
 119         serial_init();
 120
 121         /* arch number of VCMA9-Board */
 122         gd->bd->bi_arch_number = 227;
 123
 124         /* adress of boot parameters */
 125         gd->bd->bi_boot_params = 0x30000100;
 126
 127         icache_enable();
 128         dcache_enable();
 129
 130         return 0;
 131 }
 132
 133 /*
 134  * NAND flash initialization.
 135  */
 136 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 137 extern ulong
 138 nand_probe(ulong physadr);
 139
 140
 141 static inline void NF_Reset(void)
 142 {
 143     int i;
 144
 145     NF_SetCE(NFCE_LOW);
 146     NF_Cmd(0xFF);               /* reset command */
 147     for(i = 0; i < 10; i++);    /* tWB = 100ns. */
 148     NF_WaitRB();                /* wait 200~500us; */
 149     NF_SetCE(NFCE_HIGH);
 150 }
 151
 152
 153 static inline void NF_Init(void)
 154 {
 155 #if 0 /* a little bit too optimistic */
 156 #define TACLS   0
 157 #define TWRPH0  3
 158 #define TWRPH1  0
 159 #else
 160 #define TACLS   0
 161 #define TWRPH0  4
 162 #define TWRPH1  2
 163 #endif
 164
 165     NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
 166     /*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
 167     /* 1  1    1     1,   1      xxx,  r xxx,   r xxx */
 168     /* En 512B 4step ECCR nFCE=H tACLS   tWRPH0   tWRPH1 */
 169
 170     NF_Reset();
 171 }
 172
 173 void
 174 nand_init(void)
 175 {
 176         S3C2410_NAND * const nand = S3C2410_GetBase_NAND();
 177
 178         NF_Init();
 179 #ifdef DEBUG
 180         printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
 181 #endif
 182         printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
 183 }
 184 #endif
 185
 186 /*
 187  * Get some Board/PLD Info
 188  */
 189
 190 static u8 Get_PLD_ID(void)
 191 {
 192         VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
 193
 194         return(pld->ID);
 195 }
 196
 197 static u8 Get_PLD_BOARD(void)
 198 {
 199         VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
 200
 201         return(pld->BOARD);
 202 }
 203
 204 static u8 Get_PLD_SDRAM(void)
 205 {
 206         VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
 207
 208         return(pld->SDRAM);
 209 }
 210
 211 static u8 Get_PLD_Version(void)
 212 {
 213         return((Get_PLD_ID() >> 4) & 0x0F);
 214 }
 215
 216 static u8 Get_PLD_Revision(void)
 217 {
 218         return(Get_PLD_ID() & 0x0F);
 219 }
 220
 221 #if 0   /* not used */
 222 static int Get_Board_Config(void)
 223 {
 224         u8 config = Get_PLD_BOARD() & 0x03;
 225
 226         if (config == 3)
 227             return 1;
 228         else
 229             return 0;
 230 }
 231 #endif
 232
 233 static uchar Get_Board_PCB(void)
 234 {
 235         return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
 236 }
 237
 238 static u8 Get_SDRAM_ChipNr(void)
 239 {
 240         switch ((Get_PLD_SDRAM() >> 4) & 0x0F) {
 241                 case 0: return 4;
 242                 case 1: return 1;
 243                 case 2: return 2;
 244                 default: return 0;
 245         }
 246 }
 247
 248 static ulong Get_SDRAM_ChipSize(void)
 249 {
 250         switch (Get_PLD_SDRAM() & 0x0F) {
 251                 case 0: return 16 * (1024*1024);
 252                 case 1: return 32 * (1024*1024);
 253                 case 2: return  8 * (1024*1024);
 254                 case 3: return  8 * (1024*1024);
 255                 default: return 0;
 256         }
 257 }
 258 static const char * Get_SDRAM_ChipGeom(void)
 259 {
 260         switch (Get_PLD_SDRAM() & 0x0F) {
 261                 case 0: return "4Mx8x4";
 262                 case 1: return "8Mx8x4";
 263                 case 2: return "2Mx8x4";
 264                 case 3: return "4Mx8x2";
 265                 default: return "unknown";
 266         }
 267 }
 268
 269 static void Show_VCMA9_Info(char *board_name, char *serial)
 270 {
 271         printf("Board: %s SN: %s  PCB Rev: %c PLD(%d,%d)\n",
 272                 board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision());
 273         printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom());
 274 }
 275
 276 int dram_init(void)
 277 {
 278         DECLARE_GLOBAL_DATA_PTR;
 279
 280         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 281         gd->bd->bi_dram[0].size = Get_SDRAM_ChipSize() * Get_SDRAM_ChipNr();
 282
 283         return 0;
 284 }
 285
 286 /* ------------------------------------------------------------------------- */
 287
 288 /*
 289  * Check Board Identity:
 290  */
 291
 292 int checkboard(void)
 293 {
 294         unsigned char s[50];
 295         int i;
 296         backup_t *b = (backup_t *) s;
 297
 298         i = getenv_r("serial#", s, 32);
 299         if ((i < 0) || strncmp (s, "VCMA9", 5)) {
 300                 get_backup_values (b);
 301                 if (strncmp (b->signature, "MPL\0", 4) != 0) {
 302                         puts ("### No HW ID - assuming VCMA9");
 303                 } else {
 304                         b->serial_name[5] = 0;
 305                         Show_VCMA9_Info(b->serial_name, &b->serial_name[6]);
 306                 }
 307         } else {
 308                 s[5] = 0;
 309                 Show_VCMA9_Info(s, &s[6]);
 310         }
 311         /*printf("\n");*/
 312         return(0);
 313 }
 314
 315
 316 extern void mem_test_reloc(void);
 317
 318 int last_stage_init(void)
 319 {
 320         mem_test_reloc();
 321         checkboard();
 322         show_stdio_dev();
 323         check_env();
 324         return 0;
 325 }
 326
 327 /***************************************************************************
 328  * some helping routines
 329  */
 330
 331 int overwrite_console(void)
 332 {
 333         /* return TRUE if console should be overwritten */
 334         return 0;
 335 }
 336
 337
 338 /************************************************************************
 339 * Print VCMA9 Info
 340 ************************************************************************/
 341 void print_vcma9_info(void)
 342 {
 343         unsigned char s[50];
 344         int i;
 345
 346         if ((i = getenv_r("serial#", s, 32)) < 0) {
 347                 puts ("### No HW ID - assuming VCMA9");
 348                 printf("i %d", i*24);
 349         } else {
 350                 s[5] = 0;
 351                 Show_VCMA9_Info(s, &s[6]);
 352         }
 353 }