board/oxc/oxc.c

   1 /*
   2  * (C) Copyright 2000
   3  * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <mpc824x.h>
  26 #include <pci.h>
  27 #include <i2c.h>
  28
  29 int checkboard (void)
  30 {
  31         puts (  "Board: OXC8240\n" );
  32         return 0;
  33 }
  34
  35 long int initdram (int board_type)
  36 {
  37 #ifndef CFG_RAMBOOT
  38         int              i, cnt;
  39         volatile uchar * base= CFG_SDRAM_BASE;
  40         volatile ulong * addr;
  41         ulong            save[32];
  42         ulong            val, ret  = 0;
  43
  44         for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) {
  45                 addr = (volatile ulong *)base + cnt;
  46                 save[i++] = *addr;
  47                 *addr = ~cnt;
  48         }
  49
  50         addr = (volatile ulong *)base;
  51         save[i] = *addr;
  52         *addr = 0;
  53
  54         if (*addr != 0) {
  55                 *addr = save[i];
  56                 goto Done;
  57         }
  58
  59         for (cnt = 1; cnt <= CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) {
  60                 addr = (volatile ulong *)base + cnt;
  61                 val = *addr;
  62                 *addr = save[--i];
  63                 if (val != ~cnt) {
  64                         ulong new_bank0_end = cnt * sizeof(long) - 1;
  65                         ulong mear1  = mpc824x_mpc107_getreg(MEAR1);
  66                         ulong emear1 = mpc824x_mpc107_getreg(EMEAR1);
  67                         mear1 =  (mear1  & 0xFFFFFF00) |
  68                         ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
  69                         emear1 = (emear1 & 0xFFFFFF00) |
  70                         ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
  71                         mpc824x_mpc107_setreg(MEAR1,  mear1);
  72                         mpc824x_mpc107_setreg(EMEAR1, emear1);
  73
  74                         ret = cnt * sizeof(long);
  75                         goto Done;
  76                 }
  77         }
  78
  79         ret = CFG_MAX_RAM_SIZE;
  80 Done:
  81         return ret;
  82 #else
  83         /* if U-Boot starts from RAM, then suppose we have 16Mb of RAM */
  84         return (16 << 20);
  85 #endif
  86 }
  87
  88 /*
  89  * Initialize PCI Devices, report devices found.
  90  */
  91 #ifndef CONFIG_PCI_PNP
  92 static struct pci_config_table pci_oxc_config_table[] = {
  93         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x14, PCI_ANY_ID,
  94           pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
  95                                        PCI_ENET0_MEMADDR,
  96                                        PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
  97         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x15, PCI_ANY_ID,
  98           pci_cfgfunc_config_device, { PCI_ENET1_IOADDR,
  99                                        PCI_ENET1_MEMADDR,
 100                                        PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
 101         { }
 102 };
 103 #endif
 104
 105 static struct pci_controller hose = {
 106 #ifndef CONFIG_PCI_PNP
 107         config_table: pci_oxc_config_table,
 108 #endif
 109 };
 110
 111 void pci_init_board (void)
 112 {
 113         pci_mpc824x_init(&hose);
 114 }
 115
 116 int board_pre_init (void)
 117 {
 118         *(volatile unsigned char *)(CFG_CPLD_RESET) = 0x89;
 119         return 0;
 120 }
 121
 122 #ifdef CONFIG_WATCHDOG
 123 void oxc_wdt_reset(void)
 124 {
 125         *(volatile unsigned char *)(CFG_CPLD_WATCHDOG) = 0xff;
 126 }
 127
 128 void watchdog_reset(void)
 129 {
 130         int re_enable = disable_interrupts();
 131
 132         oxc_wdt_reset();
 133         if (re_enable)
 134                 enable_interrupts();
 135 }
 136 #endif
 137
 138 static int oxc_get_expander(unsigned char addr, unsigned char * val)
 139 {
 140         return i2c_read(addr, 0, 0, val, 1);
 141 }
 142
 143 static int oxc_set_expander(unsigned char addr, unsigned char val)
 144 {
 145         return i2c_write(addr, 0, 0, &val, 1);
 146 }
 147
 148 static int expander0alive = 0;
 149
 150 #ifdef CONFIG_SHOW_ACTIVITY
 151 static int ledtoggle = 0;
 152 static int ledstatus = 1;
 153
 154 void oxc_toggle_activeled(void)
 155 {
 156         ledtoggle++;
 157 }
 158
 159 void board_show_activity (ulong timestamp)
 160 {
 161         if ((timestamp % (CFG_HZ / 10)) == 0)
 162                 oxc_toggle_activeled ();
 163 }
 164
 165 void show_activity(int arg)
 166 {
 167         static unsigned char led = 0;
 168         unsigned char val;
 169
 170         if (!expander0alive) return;
 171
 172         if ((ledtoggle > (2 * arg)) && ledstatus) {
 173                 led ^= 0x80;
 174                 oxc_get_expander(CFG_I2C_EXPANDER0_ADDR, &val);
 175                 udelay(200);
 176                 oxc_set_expander(CFG_I2C_EXPANDER0_ADDR, (val & 0x7F) | led);
 177                 ledtoggle = 0;
 178         }
 179 }
 180 #endif
 181
 182 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 183 void show_boot_progress(int arg)
 184 {
 185         unsigned char val;
 186
 187         if (!expander0alive) return;
 188
 189         if (arg > 0 && ledstatus) {
 190                 ledstatus = 0;
 191                 oxc_get_expander(CFG_I2C_EXPANDER0_ADDR, &val);
 192                 udelay(200);
 193                 oxc_set_expander(CFG_I2C_EXPANDER0_ADDR, val | 0x80);
 194         } else if (arg < 0) {
 195                 oxc_get_expander(CFG_I2C_EXPANDER0_ADDR, &val);
 196                 udelay(200);
 197                 oxc_set_expander(CFG_I2C_EXPANDER0_ADDR, val & 0x7F);
 198                 ledstatus = 1;
 199         }
 200 }
 201 #endif
 202
 203 int misc_init_r (void)
 204 {
 205         /* check whether the i2c expander #0 is accessible */
 206         if (!oxc_set_expander(CFG_I2C_EXPANDER0_ADDR, 0x7F)) {
 207                 udelay(200);
 208                 expander0alive = 1;
 209         }
 210
 211 #ifdef CFG_OXC_GENERATE_IP
 212         {
 213                 DECLARE_GLOBAL_DATA_PTR;
 214
 215                 char str[32];
 216                 unsigned long ip = CFG_OXC_IPMASK;
 217                 bd_t *bd = gd->bd;
 218
 219                 if (expander0alive) {
 220                         unsigned char val;
 221
 222                         if (!oxc_get_expander(CFG_I2C_EXPANDER0_ADDR, &val)) {
 223                                 ip = (ip & 0xffffff00) | ((val & 0x7c) >> 2);
 224                         }
 225                 }
 226
 227                 if ((ip & 0xff) < 3) {
 228                         /* if fail, set x.x.x.254 */
 229                         ip = (ip & 0xffffff00) | 0xfe;
 230                 }
 231
 232                 bd->bi_ip_addr = ip;
 233                 sprintf(str, "%ld.%ld.%ld.%ld",
 234                         (bd->bi_ip_addr & 0xff000000) >> 24,
 235                         (bd->bi_ip_addr & 0x00ff0000) >> 16,
 236                         (bd->bi_ip_addr & 0x0000ff00) >> 8,
 237                         (bd->bi_ip_addr & 0x000000ff));
 238                 setenv("ipaddr", str);
 239                 printf("ip:    %s\n", str);
 240         }
 241 #endif
 242         return (0);
 243 }