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 DECLARE_GLOBAL_DATA_PTR;
  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         S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
  75         S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
  76
  77         /* to reduce PLL lock time, adjust the LOCKTIME register */
  78         clk_power->LOCKTIME = 0xFFFFFF;
  79
  80         /* configure MPLL */
  81         clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
  82
  83         /* some delay between MPLL and UPLL */
  84         delay (4000);
  85
  86         /* configure UPLL */
  87         clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
  88
  89         /* some delay between MPLL and UPLL */
  90         delay (8000);
  91
  92         /* set up the I/O ports */
  93         gpio->GPACON = 0x007FFFFF;
  94         gpio->GPBCON = 0x002AAAAA;
  95         gpio->GPBUP = 0x000002BF;
  96         gpio->GPCCON = 0xAAAAAAAA;
  97         gpio->GPCUP = 0x0000FFFF;
  98         gpio->GPDCON = 0xAAAAAAAA;
  99         gpio->GPDUP = 0x0000FFFF;
 100         gpio->GPECON = 0xAAAAAAAA;
 101         gpio->GPEUP = 0x000037F7;
 102         gpio->GPFCON = 0x00000000;
 103         gpio->GPFUP = 0x00000000;
 104         gpio->GPGCON = 0xFFEAFF5A;
 105         gpio->GPGUP = 0x0000F0DC;
 106         gpio->GPHCON = 0x0028AAAA;
 107         gpio->GPHUP = 0x00000656;
 108
 109         /* setup correct IRQ modes for NIC */
 110         gpio->EXTINT2 = (gpio->EXTINT2 & ~(7<<8)) | (4<<8); /* rising edge mode */
 111
 112         /* select USB port 2 to be host or device (fix to host for now) */
 113         gpio->MISCCR |= 0x08;
 114
 115         /* init serial */
 116         gd->baudrate = CONFIG_BAUDRATE;
 117         gd->have_console = 1;
 118         serial_init();
 119
 120         /* arch number of VCMA9-Board */
 121         gd->bd->bi_arch_number = MACH_TYPE_MPL_VCMA9;
 122
 123         /* adress of boot parameters */
 124         gd->bd->bi_boot_params = 0x30000100;
 125
 126         icache_enable();
 127         dcache_enable();
 128
 129         return 0;
 130 }
 131
 132 /*
 133  * NAND flash initialization.
 134  */
 135 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 136 extern ulong
 137 nand_probe(ulong physadr);
 138
 139
 140 static inline void NF_Reset(void)
 141 {
 142     int i;
 143
 144     NF_SetCE(NFCE_LOW);
 145     NF_Cmd(0xFF);               /* reset command */
 146     for(i = 0; i < 10; i++);    /* tWB = 100ns. */
 147     NF_WaitRB();                /* wait 200~500us; */
 148     NF_SetCE(NFCE_HIGH);
 149 }
 150
 151
 152 static inline void NF_Init(void)
 153 {
 154 #if 0 /* a little bit too optimistic */
 155 #define TACLS   0
 156 #define TWRPH0  3
 157 #define TWRPH1  0
 158 #else
 159 #define TACLS   0
 160 #define TWRPH0  4
 161 #define TWRPH1  2
 162 #endif
 163
 164     NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
 165     /*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
 166     /* 1  1    1     1,   1      xxx,  r xxx,   r xxx */
 167     /* En 512B 4step ECCR nFCE=H tACLS   tWRPH0   tWRPH1 */
 168
 169     NF_Reset();
 170 }
 171
 172 void
 173 nand_init(void)
 174 {
 175         S3C2410_NAND * const nand = S3C2410_GetBase_NAND();
 176
 177         NF_Init();
 178 #ifdef DEBUG
 179         printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
 180 #endif
 181         printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
 182 }
 183 #endif
 184
 185 /*
 186  * Get some Board/PLD Info
 187  */
 188
 189 static u8 Get_PLD_ID(void)
 190 {
 191         VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
 192
 193         return(pld->ID);
 194 }
 195
 196 static u8 Get_PLD_BOARD(void)
 197 {
 198         VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
 199
 200         return(pld->BOARD);
 201 }
 202
 203 static u8 Get_PLD_SDRAM(void)
 204 {
 205         VCMA9_PLD * const pld = VCMA9_GetBase_PLD();
 206
 207         return(pld->SDRAM);
 208 }
 209
 210 static u8 Get_PLD_Version(void)
 211 {
 212         return((Get_PLD_ID() >> 4) & 0x0F);
 213 }
 214
 215 static u8 Get_PLD_Revision(void)
 216 {
 217         return(Get_PLD_ID() & 0x0F);
 218 }
 219
 220 #if 0   /* not used */
 221 static int Get_Board_Config(void)
 222 {
 223         u8 config = Get_PLD_BOARD() & 0x03;
 224
 225         if (config == 3)
 226             return 1;
 227         else
 228             return 0;
 229 }
 230 #endif
 231
 232 static uchar Get_Board_PCB(void)
 233 {
 234         return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
 235 }
 236
 237 static u8 Get_SDRAM_ChipNr(void)
 238 {
 239         switch ((Get_PLD_SDRAM() >> 4) & 0x0F) {
 240                 case 0: return 4;
 241                 case 1: return 1;
 242                 case 2: return 2;
 243                 default: return 0;
 244         }
 245 }
 246
 247 static ulong Get_SDRAM_ChipSize(void)
 248 {
 249         switch (Get_PLD_SDRAM() & 0x0F) {
 250                 case 0: return 16 * (1024*1024);
 251                 case 1: return 32 * (1024*1024);
 252                 case 2: return  8 * (1024*1024);
 253                 case 3: return  8 * (1024*1024);
 254                 default: return 0;
 255         }
 256 }
 257 static const char * Get_SDRAM_ChipGeom(void)
 258 {
 259         switch (Get_PLD_SDRAM() & 0x0F) {
 260                 case 0: return "4Mx8x4";
 261                 case 1: return "8Mx8x4";
 262                 case 2: return "2Mx8x4";
 263                 case 3: return "4Mx8x2";
 264                 default: return "unknown";
 265         }
 266 }
 267
 268 static void Show_VCMA9_Info(char *board_name, char *serial)
 269 {
 270         printf("Board: %s SN: %s  PCB Rev: %c PLD(%d,%d)\n",
 271                 board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision());
 272         printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom());
 273 }
 274
 275 int dram_init(void)
 276 {
 277         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 278         gd->bd->bi_dram[0].size = Get_SDRAM_ChipSize() * Get_SDRAM_ChipNr();
 279
 280         return 0;
 281 }
 282
 283 /* ------------------------------------------------------------------------- */
 284
 285 /*
 286  * Check Board Identity:
 287  */
 288
 289 int checkboard(void)
 290 {
 291         unsigned char s[50];
 292         int i;
 293         backup_t *b = (backup_t *) s;
 294
 295         i = getenv_r("serial#", s, 32);
 296         if ((i < 0) || strncmp (s, "VCMA9", 5)) {
 297                 get_backup_values (b);
 298                 if (strncmp (b->signature, "MPL\0", 4) != 0) {
 299                         puts ("### No HW ID - assuming VCMA9");
 300                 } else {
 301                         b->serial_name[5] = 0;
 302                         Show_VCMA9_Info(b->serial_name, &b->serial_name[6]);
 303                 }
 304         } else {
 305                 s[5] = 0;
 306                 Show_VCMA9_Info(s, &s[6]);
 307         }
 308         /*printf("\n");*/
 309         return(0);
 310 }
 311
 312
 313 extern void mem_test_reloc(void);
 314
 315 int last_stage_init(void)
 316 {
 317         mem_test_reloc();
 318         checkboard();
 319         show_stdio_dev();
 320         check_env();
 321         return 0;
 322 }
 323
 324 /***************************************************************************
 325  * some helping routines
 326  */
 327 #if !CONFIG_USB_KEYBOARD
 328 int overwrite_console(void)
 329 {
 330         /* return TRUE if console should be overwritten */
 331         return 0;
 332 }
 333 #endif
 334
 335 /************************************************************************
 336 * Print VCMA9 Info
 337 ************************************************************************/
 338 void print_vcma9_info(void)
 339 {
 340         unsigned char s[50];
 341         int i;
 342
 343         if ((i = getenv_r("serial#", s, 32)) < 0) {
 344                 puts ("### No HW ID - assuming VCMA9");
 345                 printf("i %d", i*24);
 346         } else {
 347                 s[5] = 0;
 348                 Show_VCMA9_Info(s, &s[6]);
 349         }
 350 }