board/omap5912osk/omap5912osk.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 2003
  10  * Texas Instruments, <www.ti.com>
  11  * Kshitij Gupta <Kshitij@ti.com>
  12  *
  13  * (C) Copyright 2004
  14  * Texas Instruments, <www.ti.com>
  15  * Rishi Bhattacharya <rishi@ti.com>
  16  *
  17  * See file CREDITS for list of people who contributed to this
  18  * project.
  19  *
  20  * This program is free software; you can redistribute it and/or
  21  * modify it under the terms of the GNU General Public License as
  22  * published by the Free Software Foundation; either version 2 of
  23  * the License, or (at your option) any later version.
  24  *
  25  * This program is distributed in the hope that it will be useful,
  26  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  * GNU General Public License for more details.
  29  *
  30  * You should have received a copy of the GNU General Public License
  31  * along with this program; if not, write to the Free Software
  32  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  33  * MA 02111-1307 USA
  34  */
  35
  36 #include <common.h>
  37 #if defined(CONFIG_OMAP1610)
  38 #include <./configs/omap1510.h>
  39 #endif
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 void flash__init (void);
  44 void ether__init (void);
  45 void set_muxconf_regs (void);
  46 void peripheral_power_enable (void);
  47
  48 #define COMP_MODE_ENABLE ((unsigned int)0x0000EAEF)
  49
  50 static inline void delay (unsigned long loops)
  51 {
  52         __asm__ volatile ("1:\n"
  53                 "subs %0, %1, #1\n"
  54                 "bne 1b":"=r" (loops):"0" (loops));
  55 }
  56
  57 /*
  58  * Miscellaneous platform dependent initialisations
  59  */
  60
  61 int board_init (void)
  62 {
  63         gd->bd->bi_arch_number = MACH_TYPE_OMAP_OSK;
  64
  65         /* adress of boot parameters */
  66         gd->bd->bi_boot_params = 0x10000100;
  67
  68         /* Configure MUX settings */
  69         set_muxconf_regs ();
  70         peripheral_power_enable ();
  71
  72 /* this speeds up your boot a quite a bit.  However to make it
  73  *  work, you need make sure your kernel startup flush bug is fixed.
  74  *  ... rkw ...
  75  */
  76         icache_enable ();
  77
  78         flash__init ();
  79         ether__init ();
  80         return 0;
  81 }
  82
  83
  84 int misc_init_r (void)
  85 {
  86         /* currently empty */
  87         return (0);
  88 }
  89
  90 /******************************
  91  Routine:
  92  Description:
  93 ******************************/
  94 void flash__init (void)
  95 {
  96 #define EMIFS_GlB_Config_REG 0xfffecc0c
  97         unsigned int regval;
  98         regval = *((volatile unsigned int *) EMIFS_GlB_Config_REG);
  99         /* Turn off write protection for flash devices. */
 100         regval = regval | 0x0001;
 101         *((volatile unsigned int *) EMIFS_GlB_Config_REG) = regval;
 102 }
 103 /*************************************************************
 104  Routine:ether__init
 105  Description: take the Ethernet controller out of reset and wait
 106                            for the EEPROM load to complete.
 107 *************************************************************/
 108 void ether__init (void)
 109 {
 110 #define ETH_CONTROL_REG 0x0480000b
 111         int i;
 112
 113         *((volatile unsigned short *) 0xfffece08) = 0x03FF;
 114         *((volatile unsigned short *) 0xfffb3824) = 0x8000;
 115         *((volatile unsigned short *) 0xfffb3830) = 0x0000;
 116         *((volatile unsigned short *) 0xfffb3834) = 0x0009;
 117         *((volatile unsigned short *) 0xfffb3838) = 0x0009;
 118         *((volatile unsigned short *) 0xfffb3818) = 0x0002;
 119         *((volatile unsigned short *) 0xfffb382C) = 0x0048;
 120         *((volatile unsigned short *) 0xfffb3824) = 0x8603;
 121         udelay (3);
 122         for (i=0;i<2000;i++);
 123         *((volatile unsigned short *) 0xfffb381C) = 0x6610;
 124         udelay (30);
 125         for (i=0;i<10000;i++);
 126
 127         *((volatile unsigned char *) ETH_CONTROL_REG) &= ~0x01;
 128         udelay (3);
 129
 130
 131 }
 132
 133 /******************************
 134  Routine:
 135  Description:
 136 ******************************/
 137 int dram_init (void)
 138 {
 139         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 140         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 141
 142         return 0;
 143 }
 144
 145 /******************************************************
 146  Routine: set_muxconf_regs
 147  Description: Setting up the configuration Mux registers
 148                           specific to the hardware
 149 *******************************************************/
 150 void set_muxconf_regs (void)
 151 {
 152         volatile unsigned int *MuxConfReg;
 153         /* set each registers to its reset value; */
 154         MuxConfReg =
 155                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_0);
 156         /* setup for UART1 */
 157         *MuxConfReg &= ~(0x02000000);   /* bit 25 */
 158         /* setup for UART2 */
 159         *MuxConfReg &= ~(0x01000000);   /* bit 24 */
 160         /* Disable Uwire CS Hi-Z */
 161         *MuxConfReg |= 0x08000000;
 162         MuxConfReg =
 163                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_3);
 164         *MuxConfReg = 0x00000000;
 165         MuxConfReg =
 166                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_4);
 167         *MuxConfReg = 0x00000000;
 168         MuxConfReg =
 169                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_5);
 170         *MuxConfReg = 0x00000000;
 171         MuxConfReg =
 172                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_6);
 173         /*setup mux for UART3 */
 174         *MuxConfReg |= 0x00000001;      /* bit3, 1, 0 (mux0 5,5,26) */
 175         *MuxConfReg &= ~0x0000003e;
 176         MuxConfReg =
 177                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_7);
 178         *MuxConfReg = 0x00000000;
 179         MuxConfReg =
 180                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_8);
 181         /* Disable Uwire CS Hi-Z */
 182         *MuxConfReg |= 0x00001200;      /*bit 9 for CS0 12 for CS3 */
 183         MuxConfReg =
 184                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_9);
 185         /*  Need to turn on bits 21 and 12 in FUNC_MUX_CTRL_9 so the  */
 186         /*  hardware will actually use TX and RTS based on bit 25 in  */
 187         /*  FUNC_MUX_CTRL_0.  I told you this thing was screwy!  */
 188         *MuxConfReg |= 0x00201000;
 189         MuxConfReg =
 190                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_A);
 191         *MuxConfReg = 0x00000000;
 192         MuxConfReg =
 193                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_B);
 194         *MuxConfReg = 0x00000000;
 195         MuxConfReg =
 196                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_C);
 197         /* setup for UART2 */
 198         /*  Need to turn on bits 27 and 24 in FUNC_MUX_CTRL_C so the  */
 199         /*  hardware will actually use TX and RTS based on bit 24 in  */
 200         /*  FUNC_MUX_CTRL_0. */
 201         *MuxConfReg |= 0x09000000;
 202         MuxConfReg =
 203         (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_D);
 204         *MuxConfReg |= 0x00000020;
 205         MuxConfReg =
 206                 (volatile unsigned int *) ((unsigned int) PULL_DWN_CTRL_0);
 207         *MuxConfReg = 0x00000000;
 208         MuxConfReg =
 209                 (volatile unsigned int *) ((unsigned int) PULL_DWN_CTRL_1);
 210         *MuxConfReg = 0x00000000;
 211         /* mux setup for SD/MMC driver */
 212         MuxConfReg =
 213                 (volatile unsigned int *) ((unsigned int) PULL_DWN_CTRL_2);
 214         *MuxConfReg &= 0xFFFE0FFF;
 215         MuxConfReg =
 216                 (volatile unsigned int *) ((unsigned int) PULL_DWN_CTRL_3);
 217         *MuxConfReg = 0x00000000;
 218         MuxConfReg =
 219                 (volatile unsigned int *) ((unsigned int) MOD_CONF_CTRL_0);
 220         /* bit 13 for MMC2 XOR_CLK */
 221         *MuxConfReg &= ~(0x00002000);
 222         /* bit 29 for UART 1 */
 223         *MuxConfReg &= ~(0x00002000);
 224         MuxConfReg =
 225                 (volatile unsigned int *) ((unsigned int) FUNC_MUX_CTRL_0);
 226         /* Configure for USB. Turn on VBUS_CTRL and VBUS_MODE. */
 227         *MuxConfReg |= 0x000C0000;
 228         MuxConfReg =
 229                 (volatile unsigned int *) ((unsigned int)USB_TRANSCEIVER_CTRL);
 230         *MuxConfReg &= ~(0x00000070);
 231         *MuxConfReg &= ~(0x00000008);
 232         *MuxConfReg |= 0x00000003;
 233         *MuxConfReg |= 0x00000180;
 234         MuxConfReg =
 235                 (volatile unsigned int *) ((unsigned int) MOD_CONF_CTRL_0);
 236         /* bit 17, software controls VBUS */
 237         *MuxConfReg &= ~(0x00020000);
 238         /* Enable USB 48 and 12M clocks */
 239         *MuxConfReg |= 0x00000200;
 240         *MuxConfReg &= ~(0x00000180);
 241         /*2.75V for MMCSDIO1 */
 242         MuxConfReg =
 243                 (volatile unsigned int *) ((unsigned int) VOLTAGE_CTRL_0);
 244         *MuxConfReg = 0x00001FE7;
 245         MuxConfReg =
 246                 (volatile unsigned int *) ((unsigned int) PU_PD_SEL_0);
 247         *MuxConfReg = 0x00000000;
 248         MuxConfReg =
 249                 (volatile unsigned int *) ((unsigned int) PU_PD_SEL_1);
 250         *MuxConfReg = 0x00000000;
 251         MuxConfReg =
 252                 (volatile unsigned int *) ((unsigned int) PU_PD_SEL_2);
 253         *MuxConfReg = 0x00000000;
 254         MuxConfReg =
 255                 (volatile unsigned int *) ((unsigned int) PU_PD_SEL_3);
 256         *MuxConfReg = 0x00000000;
 257         MuxConfReg =
 258                 (volatile unsigned int *) ((unsigned int) PU_PD_SEL_4);
 259         *MuxConfReg = 0x00000000;
 260         MuxConfReg =
 261                 (volatile unsigned int *) ((unsigned int) PULL_DWN_CTRL_4);
 262         *MuxConfReg = 0x00000000;
 263         /* Turn on UART2 48 MHZ clock */
 264         MuxConfReg =
 265                 (volatile unsigned int *) ((unsigned int) MOD_CONF_CTRL_0);
 266         *MuxConfReg |= 0x40000000;
 267         MuxConfReg =
 268                 (volatile unsigned int *) ((unsigned int) USB_OTG_CTRL);
 269         /* setup for USB VBus detection OMAP161x */
 270         *MuxConfReg |= 0x00040000;      /* bit 18 */
 271         MuxConfReg =
 272                 (volatile unsigned int *) ((unsigned int) PU_PD_SEL_2);
 273         /* PullUps for SD/MMC driver */
 274         *MuxConfReg |= ~(0xFFFE0FFF);
 275         MuxConfReg =
 276                 (volatile unsigned int *) ((unsigned int)COMP_MODE_CTRL_0);
 277         *MuxConfReg = COMP_MODE_ENABLE;
 278 }
 279
 280 /******************************************************
 281  Routine: peripheral_power_enable
 282  Description: Enable the power for UART1
 283 *******************************************************/
 284 void peripheral_power_enable (void)
 285 {
 286 #define UART1_48MHZ_ENABLE      ((unsigned short)0x0200)
 287 #define SW_CLOCK_REQUEST        ((volatile unsigned short *)0xFFFE0834)
 288
 289         *SW_CLOCK_REQUEST |= UART1_48MHZ_ENABLE;
 290 }
 291
 292 /*
 293  * Check Board Identity
 294  */
 295 int checkboard(void)
 296 {
 297         char *s = getenv("serial#");
 298
 299         puts("Board: OSK5912");
 300
 301         if (s != NULL) {
 302                 puts(", serial# ");
 303                 puts(s);
 304         }
 305         putc('\n');
 306
 307         return (0);
 308 }