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 <netdev.h>
  30 #include <s3c2410.h>
  31 #include <stdio_dev.h>
  32 #include <i2c.h>
  33
  34 #include "vcma9.h"
  35 #include "../common/common_util.h"
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 #define FCLK_SPEED 1
  40
  41 #if FCLK_SPEED==0               /* Fout = 203MHz, Fin = 12MHz for Audio */
  42 #define M_MDIV  0xC3
  43 #define M_PDIV  0x4
  44 #define M_SDIV  0x1
  45 #elif FCLK_SPEED==1             /* Fout = 202.8MHz */
  46 #define M_MDIV  0xA1
  47 #define M_PDIV  0x3
  48 #define M_SDIV  0x1
  49 #endif
  50
  51 #define USB_CLOCK 1
  52
  53 #if USB_CLOCK==0
  54 #define U_M_MDIV        0xA1
  55 #define U_M_PDIV        0x3
  56 #define U_M_SDIV        0x1
  57 #elif USB_CLOCK==1
  58 #define U_M_MDIV        0x48
  59 #define U_M_PDIV        0x3
  60 #define U_M_SDIV        0x2
  61 #endif
  62
  63 static inline void delay(unsigned long loops)
  64 {
  65         __asm__ volatile ("1:\n"
  66           "subs %0, %1, #1\n"
  67           "bne 1b":"=r" (loops):"0" (loops));
  68 }
  69
  70 /*
  71  * Miscellaneous platform dependent initialisations
  72  */
  73
  74 int board_init(void)
  75 {
  76         struct s3c24x0_clock_power * const clk_power =
  77                                         s3c24x0_get_base_clock_power();
  78         struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
  79
  80         /* to reduce PLL lock time, adjust the LOCKTIME register */
  81         clk_power->LOCKTIME = 0xFFFFFF;
  82
  83         /* configure MPLL */
  84         clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
  85
  86         /* some delay between MPLL and UPLL */
  87         delay (4000);
  88
  89         /* configure UPLL */
  90         clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
  91
  92         /* some delay between MPLL and UPLL */
  93         delay (8000);
  94
  95         /* set up the I/O ports */
  96         gpio->GPACON = 0x007FFFFF;
  97         gpio->GPBCON = 0x002AAAAA;
  98         gpio->GPBUP = 0x000002BF;
  99         gpio->GPCCON = 0xAAAAAAAA;
 100         gpio->GPCUP = 0x0000FFFF;
 101         gpio->GPDCON = 0xAAAAAAAA;
 102         gpio->GPDUP = 0x0000FFFF;
 103         gpio->GPECON = 0xAAAAAAAA;
 104         gpio->GPEUP = 0x000037F7;
 105         gpio->GPFCON = 0x00000000;
 106         gpio->GPFUP = 0x00000000;
 107         gpio->GPGCON = 0xFFEAFF5A;
 108         gpio->GPGUP = 0x0000F0DC;
 109         gpio->GPHCON = 0x0028AAAA;
 110         gpio->GPHUP = 0x00000656;
 111
 112         /* setup correct IRQ modes for NIC */
 113         gpio->EXTINT2 = (gpio->EXTINT2 & ~(7<<8)) | (4<<8); /* rising edge mode */
 114
 115         /* select USB port 2 to be host or device (fix to host for now) */
 116         gpio->MISCCR |= 0x08;
 117
 118         /* init serial */
 119         gd->baudrate = CONFIG_BAUDRATE;
 120         gd->have_console = 1;
 121         serial_init();
 122
 123         /* arch number of VCMA9-Board */
 124         gd->bd->bi_arch_number = MACH_TYPE_MPL_VCMA9;
 125
 126         /* adress of boot parameters */
 127         gd->bd->bi_boot_params = 0x30000100;
 128
 129         icache_enable();
 130         dcache_enable();
 131
 132         return 0;
 133 }
 134
 135 /*
 136  * NAND flash initialization.
 137  */
 138 #if defined(CONFIG_CMD_NAND)
 139 extern ulong
 140 nand_probe(ulong physadr);
 141
 142
 143 static inline void NF_Reset(void)
 144 {
 145     int i;
 146
 147     NF_SetCE(NFCE_LOW);
 148     NF_Cmd(0xFF);               /* reset command */
 149     for(i = 0; i < 10; i++);    /* tWB = 100ns. */
 150     NF_WaitRB();                /* wait 200~500us; */
 151     NF_SetCE(NFCE_HIGH);
 152 }
 153
 154
 155 static inline void NF_Init(void)
 156 {
 157 #if 0 /* a little bit too optimistic */
 158 #define TACLS   0
 159 #define TWRPH0  3
 160 #define TWRPH1  0
 161 #else
 162 #define TACLS   0
 163 #define TWRPH0  4
 164 #define TWRPH1  2
 165 #endif
 166
 167     NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
 168     /*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
 169     /* 1  1    1     1,   1      xxx,  r xxx,   r xxx */
 170     /* En 512B 4step ECCR nFCE=H tACLS   tWRPH0   tWRPH1 */
 171
 172     NF_Reset();
 173 }
 174
 175 void
 176 nand_init(void)
 177 {
 178         struct s3c2410_nand * const nand = s3c2410_get_base_nand();
 179
 180         NF_Init();
 181 #ifdef DEBUG
 182         printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
 183 #endif
 184         printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
 185 }
 186 #endif
 187
 188 /*
 189  * Get some Board/PLD Info
 190  */
 191
 192 static u8 Get_PLD_ID(void)
 193 {
 194         VCMA9_PLD * const pld = VCMA9_get_base_PLD();
 195
 196         return(pld->ID);
 197 }
 198
 199 static u8 Get_PLD_BOARD(void)
 200 {
 201         VCMA9_PLD * const pld = VCMA9_get_base_PLD();
 202
 203         return(pld->BOARD);
 204 }
 205
 206 static u8 Get_PLD_SDRAM(void)
 207 {
 208         VCMA9_PLD * const pld = VCMA9_get_base_PLD();
 209
 210         return(pld->SDRAM);
 211 }
 212
 213 static u8 Get_PLD_Version(void)
 214 {
 215         return((Get_PLD_ID() >> 4) & 0x0F);
 216 }
 217
 218 static u8 Get_PLD_Revision(void)
 219 {
 220         return(Get_PLD_ID() & 0x0F);
 221 }
 222
 223 #if 0   /* not used */
 224 static int Get_Board_Config(void)
 225 {
 226         u8 config = Get_PLD_BOARD() & 0x03;
 227
 228         if (config == 3)
 229             return 1;
 230         else
 231             return 0;
 232 }
 233 #endif
 234
 235 static uchar Get_Board_PCB(void)
 236 {
 237         return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
 238 }
 239
 240 static u8 Get_SDRAM_ChipNr(void)
 241 {
 242         switch ((Get_PLD_SDRAM() >> 4) & 0x0F) {
 243                 case 0: return 4;
 244                 case 1: return 1;
 245                 case 2: return 2;
 246                 default: return 0;
 247         }
 248 }
 249
 250 static ulong Get_SDRAM_ChipSize(void)
 251 {
 252         switch (Get_PLD_SDRAM() & 0x0F) {
 253                 case 0: return 16 * (1024*1024);
 254                 case 1: return 32 * (1024*1024);
 255                 case 2: return  8 * (1024*1024);
 256                 case 3: return  8 * (1024*1024);
 257                 default: return 0;
 258         }
 259 }
 260 static const char * Get_SDRAM_ChipGeom(void)
 261 {
 262         switch (Get_PLD_SDRAM() & 0x0F) {
 263                 case 0: return "4Mx8x4";
 264                 case 1: return "8Mx8x4";
 265                 case 2: return "2Mx8x4";
 266                 case 3: return "4Mx8x2";
 267                 default: return "unknown";
 268         }
 269 }
 270
 271 static void Show_VCMA9_Info(char *board_name, char *serial)
 272 {
 273         printf("Board: %s SN: %s  PCB Rev: %c PLD(%d,%d)\n",
 274                 board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision());
 275         printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom());
 276 }
 277
 278 int dram_init(void)
 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         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 int last_stage_init(void)
 317 {
 318         checkboard();
 319         stdio_print_current_devices();
 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         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 }
 351
 352 #ifdef CONFIG_CMD_NET
 353 int board_eth_init(bd_t *bis)
 354 {
 355         int rc = 0;
 356 #ifdef CONFIG_CS8900
 357         rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
 358 #endif
 359         return rc;
 360 }
 361 #endif