board/cray/L1/L1.c

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   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 <asm/processor.h>
  26 #include <4xx_i2c.h>
  27 #include <command.h>
  28 #include <rtc.h>
  29 #include <post.h>
  30 #include <net.h>
  31 #include <malloc.h>
  32
  33 #define L1_MEMSIZE (32*1024*1024)
  34
  35 /* the std. DHCP stufff */
  36 #define DHCP_ROUTER       3
  37 #define DHCP_NETMASK      1
  38 #define DHCP_BOOTFILE     67
  39 #define DHCP_ROOTPATH     17
  40 #define DHCP_HOSTNAME     12
  41
  42 /* some extras used by CRAY
  43  *
  44  * on the server this looks like:
  45  *
  46  * option L1-initrd-image code 224 = string;
  47  * option L1-initrd-image "/opt/craysv2/craymcu/l1/flash/initrd.image"
  48  */
  49 #define DHCP_L1_INITRD  224
  50
  51 /* new, [better?] way via official vendor-extensions, defining an option
  52  * space.
  53  * on the server this looks like:
  54  *
  55  * option space CRAYL1;
  56  * option CRAYL1.initrd     code 3 = string;
  57  * ..etc...
  58  */
  59 #define DHCP_VENDOR_SPECX   43
  60 #define DHCP_VX_INITRD       3
  61 #define DHCP_VX_BOOTCMD      4
  62 #define DHCP_VX_BOOTARGS     5
  63 #define DHCP_VX_ROOTDEV      6
  64 #define DHCP_VX_FROMFLASH    7
  65 #define DHCP_VX_BOOTSCRIPT   8
  66 #define DHCP_VX_RCFILE       9
  67 #define DHCP_VX_MAGIC        10
  68
  69 /* Things DHCP server can tellme about.  If there's no flash address, then
  70  * they dont participate in 'update' to flash, and we force their values
  71  * back to '0' every boot to be sure to get them fresh from DHCP.  Yes, I
  72  * know this is a pain...
  73  *
  74  * If I get no bootfile, boot from flash.  If rootpath, use that.  If no
  75  * rootpath use initrd in flash.
  76  */
  77 typedef struct dhcp_item_s {
  78         u8 dhcp_option;
  79         u8 dhcp_vendor_option;
  80         char *dhcpvalue;
  81         char *envname;
  82 } dhcp_item_t;
  83 static dhcp_item_t Things[] = {
  84         {DHCP_ROUTER, 0, NULL, "gateway"},
  85         {DHCP_NETMASK, 0, NULL, "netmask"},
  86         {DHCP_BOOTFILE, 0, NULL, "bootfile"},
  87         {DHCP_ROOTPATH, 0, NULL, "rootpath"},
  88         {DHCP_HOSTNAME, 0, NULL, "hostname"},
  89         {DHCP_L1_INITRD, 0, NULL, "initrd"},
  90 /* and the other way.. */
  91         {DHCP_VENDOR_SPECX, DHCP_VX_INITRD, NULL, "initrd"},
  92         {DHCP_VENDOR_SPECX, DHCP_VX_BOOTCMD, NULL, "bootcmd"},
  93         {DHCP_VENDOR_SPECX, DHCP_VX_FROMFLASH, NULL, "fromflash"},
  94         {DHCP_VENDOR_SPECX, DHCP_VX_BOOTSCRIPT, NULL, "bootscript"},
  95         {DHCP_VENDOR_SPECX, DHCP_VX_RCFILE, NULL, "rcfile"},
  96         {DHCP_VENDOR_SPECX, DHCP_VX_BOOTARGS, NULL, "xbootargs"},
  97         {DHCP_VENDOR_SPECX, DHCP_VX_ROOTDEV, NULL, NULL},
  98         {DHCP_VENDOR_SPECX, DHCP_VX_MAGIC, NULL, NULL}
  99 };
 100
 101 #define N_THINGS ((sizeof(Things))/(sizeof(dhcp_item_t)))
 102
 103 extern char bootscript[];
 104
 105 /* Here is the boot logic as HUSH script. Overridden by any TFP provided
 106  * bootscript file.
 107  */
 108
 109 static void init_sdram (void);
 110
 111 /* ------------------------------------------------------------------------- */
 112 int board_early_init_f (void)
 113 {
 114         /* Running from ROM: global data is still READONLY */
 115         init_sdram ();
 116         mtdcr (UIC0SR, 0xFFFFFFFF);     /* clear all ints */
 117         mtdcr (UIC0ER, 0x00000000);     /* disable all ints */
 118         mtdcr (UIC0CR, 0x00000020);     /* set all but FPGA SMI to be non-critical */
 119         mtdcr (UIC0PR, 0xFFFFFFE0);     /* set int polarities */
 120         mtdcr (UIC0TR, 0x10000000);     /* set int trigger levels */
 121         mtdcr (UIC0VCR, 0x00000001);    /* set vect base=0,INT0 highest priority */
 122         mtdcr (UIC0SR, 0xFFFFFFFF);     /* clear all ints */
 123         return 0;
 124 }
 125
 126 /* ------------------------------------------------------------------------- */
 127 int checkboard (void)
 128 {
 129         return (0);
 130 }
 131 /* ------------------------------------------------------------------------- */
 132
 133 /* ------------------------------------------------------------------------- */
 134 int misc_init_r (void)
 135 {
 136         char *s, *e;
 137         image_header_t *hdr;
 138         time_t timestamp;
 139         struct rtc_time tm;
 140         char bootcmd[32];
 141
 142         hdr = (image_header_t *) (CONFIG_SYS_MONITOR_BASE - image_get_header_size ());
 143 #if defined(CONFIG_FIT)
 144         if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
 145                 puts ("Non legacy image format not supported\n");
 146                 return -1;
 147         }
 148 #endif
 149
 150         timestamp = (time_t)image_get_time (hdr);
 151         to_tm (timestamp, &tm);
 152         printf ("Welcome to U-Boot on Cray L1. Compiled %4d-%02d-%02d  %2d:%02d:%02d (UTC)\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
 153
 154 #define FACTORY_SETTINGS 0xFFFC0000
 155         if ((s = getenv ("ethaddr")) == NULL) {
 156                 e = (char *) (FACTORY_SETTINGS);
 157                 if (*(e + 0) != '0'
 158                         || *(e + 1) != '0'
 159                         || *(e + 2) != ':'
 160                         || *(e + 3) != '4' || *(e + 4) != '0' || *(e + 17) != '\0') {
 161                         printf ("No valid MAC address in flash location 0x3C0000!\n");
 162                 } else {
 163                         printf ("Factory MAC: %s\n", e);
 164                         setenv ("ethaddr", e);
 165                 }
 166         }
 167         sprintf (bootcmd,"source %X",(unsigned)bootscript);
 168         setenv ("bootcmd", bootcmd);
 169         return (0);
 170 }
 171
 172 /* ------------------------------------------------------------------------- */
 173 phys_size_t initdram (int board_type)
 174 {
 175         return (L1_MEMSIZE);
 176 }
 177
 178 /* ------------------------------------------------------------------------- */
 179 /* stubs so we can print dates w/o any nvram RTC.*/
 180 int rtc_get (struct rtc_time *tmp)
 181 {
 182         return 0;
 183 }
 184 int rtc_set (struct rtc_time *tmp)
 185 {
 186         return 0;
 187 }
 188 void rtc_reset (void)
 189 {
 190         return;
 191 }
 192
 193 /* ------------------------------------------------------------------------- */
 194 /*  Do sdram bank init in C so I can read it..no console to print to yet!
 195  */
 196 static void init_sdram (void)
 197 {
 198  unsigned long tmp;
 199
 200         /* write SDRAM bank 0 register */
 201         mtdcr (SDRAM0_CFGADDR, mem_mb0cf);
 202         mtdcr (SDRAM0_CFGDATA, 0x00062001);
 203
 204 /* Set the SDRAM Timing reg, SDTR1 and the refresh timer reg, RTR.      */
 205 /* To set the appropriate timings, we need to know the SDRAM speed.     */
 206 /* We can use the PLB speed since the SDRAM speed is the same as        */
 207 /* the PLB speed. The PLB speed is the FBK divider times the            */
 208 /* 405GP reference clock, which on the L1 is 25MHz.                     */
 209 /* Thus, if FBK div is 2, SDRAM is 50MHz; if FBK div is 3, SDRAM is     */
 210 /* 150MHz; if FBK is 3, SDRAM is 150MHz.                                */
 211
 212         /* divisor = ((mfdcr(strap)>> 28) & 0x3); */
 213
 214 /* write SDRAM timing for 100MHz. */
 215         mtdcr (SDRAM0_CFGADDR, mem_sdtr1);
 216         mtdcr (SDRAM0_CFGDATA, 0x0086400D);
 217
 218 /* write SDRAM refresh interval register */
 219         mtdcr (SDRAM0_CFGADDR, mem_rtr);
 220         mtdcr (SDRAM0_CFGDATA, 0x05F00000);
 221         udelay (200);
 222
 223 /* sdram controller.*/
 224         mtdcr (SDRAM0_CFGADDR, mem_mcopt1);
 225         mtdcr (SDRAM0_CFGDATA, 0x90800000);
 226         udelay (200);
 227
 228 /* initially, disable ECC on all banks */
 229         udelay (200);
 230         mtdcr (SDRAM0_CFGADDR, mem_ecccf);
 231         tmp = mfdcr (SDRAM0_CFGDATA);
 232         tmp &= 0xff0fffff;
 233         mtdcr (SDRAM0_CFGADDR, mem_ecccf);
 234         mtdcr (SDRAM0_CFGDATA, tmp);
 235
 236         return;
 237 }
 238
 239 extern int memory_post_test (int flags);
 240
 241 int testdram (void)
 242 {
 243  unsigned long tmp;
 244         uint *pstart = (uint *) 0x00000000;
 245         uint *pend = (uint *) L1_MEMSIZE;
 246         uint *p;
 247
 248         if (getenv_r("booted",NULL,0) <= 0)
 249         {
 250                 printf ("testdram..");
 251         /*AA*/
 252                 for (p = pstart; p < pend; p++)
 253                         *p = 0xaaaaaaaa;
 254                 for (p = pstart; p < pend; p++) {
 255                         if (*p != 0xaaaaaaaa) {
 256                                 printf ("SDRAM test fails at: %08x, was %08x expected %08x\n",
 257                                                 (uint) p, *p, 0xaaaaaaaa);
 258                                 return 1;
 259                         }
 260                 }
 261         /*55*/
 262                 for (p = pstart; p < pend; p++)
 263                         *p = 0x55555555;
 264                 for (p = pstart; p < pend; p++) {
 265                         if (*p != 0x55555555) {
 266                                 printf ("SDRAM test fails at: %08x, was %08x expected %08x\n",
 267                                                 (uint) p, *p, 0x55555555);
 268                                 return 1;
 269                         }
 270                 }
 271         /*addr*/
 272                 for (p = pstart; p < pend; p++)
 273                         *p = (unsigned)p;
 274                 for (p = pstart; p < pend; p++) {
 275                         if (*p != (unsigned)p) {
 276                                 printf ("SDRAM test fails at: %08x, was %08x expected %08x\n",
 277                                                 (uint) p, *p, (uint)p);
 278                                 return 1;
 279                         }
 280                 }
 281                 printf ("Success. ");
 282         }
 283         printf ("Enable ECC..");
 284
 285         mtdcr (SDRAM0_CFGADDR, mem_mcopt1);
 286         tmp = (mfdcr (SDRAM0_CFGDATA) & ~0xFFE00000) | 0x90800000;
 287         mtdcr (SDRAM0_CFGADDR, mem_mcopt1);
 288         mtdcr (SDRAM0_CFGDATA, tmp);
 289         udelay (600);
 290         for (p = (unsigned long) 0; ((unsigned long) p < L1_MEMSIZE); *p++ = 0L)
 291                 ;
 292         udelay (400);
 293         mtdcr (SDRAM0_CFGADDR, mem_ecccf);
 294         tmp = mfdcr (SDRAM0_CFGDATA);
 295         tmp |= 0x00800000;
 296         mtdcr (SDRAM0_CFGDATA, tmp);
 297         udelay (400);
 298         printf ("enabled.\n");
 299         return (0);
 300 }
 301
 302 /* ------------------------------------------------------------------------- */
 303 static u8 *dhcp_env_update (u8 thing, u8 * pop)
 304 {
 305         u8 i, oplen;
 306
 307         oplen = *(pop + 1);
 308
 309         if ((Things[thing].dhcpvalue = malloc (oplen)) == NULL) {
 310                 printf ("Whoops! failed to malloc space for DHCP thing %s\n",
 311                                 Things[thing].envname);
 312                 return NULL;
 313         }
 314         for (i = 0; (i < oplen); i++)
 315                 if ((*(Things[thing].dhcpvalue + i) = *(pop + 2 + i)) == ' ')
 316                         break;
 317         *(Things[thing].dhcpvalue + i) = '\0';
 318
 319 /* set env. */
 320         if (Things[thing].envname)
 321         {
 322                 setenv (Things[thing].envname, Things[thing].dhcpvalue);
 323         }
 324         return ((u8 *)(Things[thing].dhcpvalue));
 325 }
 326
 327 /* ------------------------------------------------------------------------- */
 328 u8 *dhcp_vendorex_prep (u8 * e)
 329 {
 330         u8 thing;
 331
 332 /* ask for the things I want. */
 333         *e++ = 55;                                      /* Parameter Request List */
 334         *e++ = N_THINGS;
 335         for (thing = 0; thing < N_THINGS; thing++)
 336                 *e++ = Things[thing].dhcp_option;
 337         *e++ = 255;
 338
 339         return e;
 340 }
 341
 342 /* ------------------------------------------------------------------------- */
 343 /* .. return NULL means it wasnt mine, non-null means I got it..*/
 344 u8 *dhcp_vendorex_proc (u8 * pop)
 345 {
 346         u8 oplen, *sub_op, sub_oplen, *retval;
 347         u8 thing = 0;
 348
 349         retval = NULL;
 350         oplen = *(pop + 1);
 351 /* if pop is vender spec indicator, there are sub-options. */
 352         if (*pop == DHCP_VENDOR_SPECX) {
 353                 for (sub_op = pop + 2;
 354                      oplen && (sub_oplen = *(sub_op + 1));
 355                      oplen -= sub_oplen, sub_op += (sub_oplen + 2)) {
 356                         for (thing = 0; thing < N_THINGS; thing++) {
 357                             if (*sub_op == Things[thing].dhcp_vendor_option) {
 358                                         if (!(retval = dhcp_env_update (thing, sub_op))) {
 359                                                 return NULL;
 360                                         }
 361                             }
 362                         }
 363                 }
 364         } else {
 365                 for (thing = 0; thing < N_THINGS; thing++) {
 366                         if (*pop == Things[thing].dhcp_option)
 367                                 if (!(retval = dhcp_env_update (thing, pop)))
 368                                         return NULL;
 369                 }
 370         }
 371         return (pop);
 372 }