board/mini2440/mini2440.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  * (C) Copyright 2009
  10  * Michel Pollet <buserror@gmail.com>
  11  *
  12  * See file CREDITS for list of people who contributed to this
  13  * project.
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License as
  17  * published by the Free Software Foundation; either version 2 of
  18  * the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  28  * MA 02111-1307 USA
  29  */
  30
  31 #include <common.h>
  32 #include <s3c2440.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 /* FCLK = 405 MHz, HCLK = 101 MHz, PCLK = 50 MHz, UCLK = 48 MHz */
  37 #define CLKDIVN_VAL     5
  38 #define M_MDIV          0x7f
  39 #define M_PDIV          0x2
  40 #define M_SDIV          0x1
  41
  42 #define U_M_MDIV        0x38
  43 #define U_M_PDIV        0x2
  44 #define U_M_SDIV        0x2
  45
  46 static inline void delay (unsigned long loops)
  47 {
  48         __asm__ volatile ("1:\n"
  49           "subs %0, %1, #1\n"
  50           "bne 1b":"=r" (loops):"0" (loops));
  51 }
  52
  53 /*
  54  * Miscellaneous platform dependent initialisations
  55  */
  56
  57 int board_init (void)
  58 {
  59         S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
  60         S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
  61
  62         /* to reduce PLL lock time, adjust the LOCKTIME register */
  63         clk_power->LOCKTIME = 0xFFFFFF;
  64         clk_power->CLKDIVN = CLKDIVN_VAL;
  65
  66         /* configure UPLL */
  67         clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
  68         /* some delay between MPLL and UPLL */
  69         delay (10);
  70         /* configure MPLL */
  71         clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
  72
  73         /* some delay between MPLL and UPLL */
  74         delay (8000);
  75
  76         gpio->GPACON = 0x007FFFFF;
  77         // port B outputs reconfigured
  78         gpio->GPBCON =
  79                                         (0x1 <<  0) | // GPB0   OUT     TOUT0   PWM Buzzer
  80                                         (0x1 <<  2) | // GPB1   OUT                             LCD
  81                                         (0x1 <<  4) | // GPB2   OUT     L3MODE
  82                                         (0x1 <<  6) | // GBP3   OUT     L3DATA
  83                                         (0x1 <<  8) | // GBP4   OUT     L3CLOCK
  84                                         (0x1 << 10) | // GBP5   OUT     LED1
  85                                         (0x1 << 12) | // GBP6   OUT     LED2
  86                                         (0x1 << 14) | // GBP7   OUT     LED3
  87                                         (0x1 << 16) | // GBP8   OUT     LED4
  88                                         (0x2 << 18) | // GBP9   ---     nXDACK0         CON5 EBI
  89                                         (0x2 << 20) | // GBP10  ---     nXDREQ0         CON5 EBI
  90                                         0;
  91         gpio->GPBUP = (1 << 10) - 1; // disable pullup on all 10 pins
  92         gpio->GPBDAT = 0;
  93
  94         // lcd signals on C and D
  95         gpio->GPCCON = 0xAAAAAAAA;
  96         gpio->GPCUP = 0xFFFFFFFF;
  97         gpio->GPDCON = 0xAAAAAAAA;
  98         gpio->GPDUP = 0xFFFFFFFF;
  99         // port E is set for all it's special functions (i2c, spi etc)
 100     gpio->GPECON = 0xAAAAAAAA;
 101         gpio->GPEUP = 0x0000FFFF;
 102
 103         gpio->GPFCON =
 104                                         (0x1 <<  0) | // GPG0   EINT0   OUT
 105                                         (0x1 <<  2) | // GPG1   EINT1   OUT
 106                                         (0x1 <<  4) | // GPG2   EINT2   OUT
 107                                         (0x1 <<  6) | // GPG3   EINT3   OUT
 108                                         (0x1 <<  8) | // GPG4   EINT4   OUT
 109                                         (0x1 << 10) | // GPG5   EINT5   OUT
 110                                         (0x1 << 12) | // GPG6   EINT6   OUT
 111                                         (0x0 << 14) | // GPG7   EINT7   IN      DM9000
 112                                         0;
 113         gpio->GPFDAT = 0;
 114         gpio->GPFUP = ((1 << 7) - 1) // all disabled
 115                                         & ~( 1 << 7 ) // but for the ethernet one, we need it.
 116                                         ;
 117
 118         gpio->GPGCON =
 119                                         (0x0 <<  0) | // GPG0   EINT8   IN      Key1
 120                                         (0x1 <<  2) | // GPG1   EINT9   OUT                             Con5
 121                                         (0x1 <<  4) | // GPG2   EINT10  OUT
 122                                         (0x0 <<  6) | // GPG3   EINT11  IN      Key2
 123                                         (0x1 <<  8) | // GPG4   EINT12  OUT
 124                                         (0x0 << 10) | // GPG5   EINT13  IN      Key3
 125                                         (0x0 << 12) | // GPG6   EINT14  IN      Key4
 126                                         (0x0 << 14) | // GPG7   EINT15  IN      Key5
 127                                         (0x1 << 16) | // GPG8   EINT16  OUT     nCD_SD
 128                                         (0x1 << 18) | // GPG9   EINT17  OUT
 129                                         (0x1 << 20) | // GPG10  EINT18  OUT
 130                                         (0x0 << 22) | // GPG11  EINT19  IN      Key6
 131                                         (0x0 << 24) | // GPG12  EINT18  IN      // Datasheet says GPG[12..15] need to be inputs
 132                                         (0x0 << 26) | // GPG13  EINT18  IN      // hard pullups
 133                                         (0x0 << 28) | // GPG14  EINT18  IN
 134                                         (0x0 << 30) | // GPG15  EINT18  IN
 135                                         0;
 136         gpio->GPGUP = (1 << 15) -1;     // disable pullups for all pins
 137
 138         gpio->GPHCON =
 139                                         (0x2 <<  0) | // GPH0   nCTS0                   ---
 140                                         (0x2 <<  2) | // GPH1   nRTS0                   ---
 141                                         (0x2 <<  4) | // GPH2   TXD0                    ---
 142                                         (0x2 <<  6) | // GPH3   RXD0                    ---
 143                                         (0x2 <<  8) | // GPH4   TXD1                    ---
 144                                         (0x2 << 10) | // GPH5   RXD1                    ---
 145                                         (0x2 << 12) | // GPH6   [TXD2]  nRTS1
 146                                         (0x2 << 14) | // GPH7   [RXD2]  nCTS1
 147                                         (0x1 << 16) | // GPH8   UEXTCLK                 OUT
 148                                         (0x1 << 18) | // GPH9   CLKOUT0                 OUT
 149                                         (0x1 << 20) | // GPH10  CLKOUT1                 OUT
 150                                         0;
 151         gpio->GPHUP = (1 << 10) - 1; // disable pullups for all pins
 152
 153         gpio->EXTINT0=0x22222222;
 154         gpio->EXTINT1=0x22222222;
 155         gpio->EXTINT2=0x22222222;
 156
 157 #if 0
 158         /* USB Device Part */
 159         /*GPGCON is reset for USB Device */
 160         gpio->GPGCON = (gpio->GPGCON & ~(3 << 24)) | (1 << 24); /* Output Mode */
 161         gpio->GPGUP = gpio->GPGUP | ( 1 << 12);                 /* Pull up disable */
 162
 163         gpio->GPGDAT |= ( 1 << 12) ;
 164         gpio->GPGDAT &= ~( 1 << 12) ;
 165         udelay(20000);
 166         gpio->GPGDAT |= ( 1 << 12) ;
 167 #endif
 168
 169         /* arch number of SMDK2440-Board */
 170 //      gd->bd->bi_arch_number = MACH_TYPE_S3C2440;
 171 #ifndef MACH_TYPE_MINI2440
 172 #define MACH_TYPE_MINI2440 1999 /* from kernel post 2.6.28 */
 173 #endif
 174         gd->bd->bi_arch_number = MACH_TYPE_MINI2440;
 175
 176         /* adress of boot parameters */
 177         gd->bd->bi_boot_params = 0x30000100;
 178
 179         icache_enable();
 180         dcache_enable();
 181
 182         return 0;
 183 }
 184
 185 int dram_init (void)
 186 {
 187         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 188         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 189
 190         return 0;
 191 }
 192
 193 /* The sum of all part_size[]s must equal to the NAND size, i.e., 0x4000000.
 194    "initrd" is sized such that it can hold two uncompressed 16 bit 640*480
 195    images: 640*480*2*2 = 1228800 < 1245184. */
 196
 197 unsigned int dynpart_size[] = {
 198     CFG_UBOOT_SIZE, 0x20000, 0x200000, 0xa0000, 0x3d5c000-CFG_UBOOT_SIZE, 0 };
 199 char *dynpart_names[] = {
 200     "u-boot", "u-boot_env", "kernel", "splash", "rootfs", NULL };
 201
 202