sys/arch/evbppc/pmppc/machdep.c

   1 /*      $NetBSD: machdep.c,v 1.7 2009/03/18 10:22:28 cegger Exp $       */
   2
   3 /*
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
  34  * Copyright (C) 1995, 1996 TooLs GmbH.
  35  * All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by TooLs GmbH.
  48  * 4. The name of TooLs GmbH may not be used to endorse or promote products
  49  *    derived from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
  52  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  53  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  54  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  56  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  57  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  58  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  59  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  60  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  */
  62
  63 #include <sys/cdefs.h>
  64 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.7 2009/03/18 10:22:28 cegger Exp $");
  65
  66 #include "opt_compat_netbsd.h"
  67 #include "opt_ddb.h"
  68 #include "opt_ddbparam.h"
  69 #include "opt_inet.h"
  70 #include "opt_ccitt.h"
  71 #include "opt_iso.h"
  72 #include "opt_ns.h"
  73 #include "opt_ipkdb.h"
  74
  75 #include <sys/param.h>
  76 #include <sys/buf.h>
  77 #include <sys/conf.h>
  78 #include <sys/device.h>
  79 #include <sys/exec.h>
  80 #include <sys/extent.h>
  81 #include <sys/kernel.h>
  82 #include <sys/kgdb.h>
  83 #include <sys/malloc.h>
  84 #include <sys/mbuf.h>
  85 #include <sys/mount.h>
  86 #include <sys/msgbuf.h>
  87 #include <sys/proc.h>
  88 #include <sys/reboot.h>
  89 #include <sys/syscallargs.h>
  90 #include <sys/syslog.h>
  91 #include <sys/sysctl.h>
  92 #include <sys/systm.h>
  93 #include <sys/ksyms.h>
  94
  95 #include <uvm/uvm.h>
  96 #include <uvm/uvm_extern.h>
  97
  98 #include <net/netisr.h>
  99
 100 #include <machine/bus.h>
 101 #include <machine/db_machdep.h>
 102 #include <machine/intr.h>
 103 #include <machine/pio.h>
 104 #include <machine/pmap.h>
 105 #include <machine/powerpc.h>
 106 #include <machine/trap.h>
 107 #include <machine/pmppc.h>
 108
 109 #include <powerpc/oea/bat.h>
 110 #include <arch/powerpc/pic/picvar.h>
 111
 112 #include <ddb/db_extern.h>
 113
 114 #include <dev/cons.h>
 115
 116 #include <dev/ic/cpc700reg.h>
 117 #include <dev/ic/cpc700uic.h>
 118
 119 #include "com.h"
 120 #if (NCOM > 0)
 121 #include <sys/termios.h>
 122 #include <dev/ic/comreg.h>
 123 #include <dev/ic/comvar.h>
 124 #endif
 125
 126 #include "ksyms.h"
 127
 128 struct powerpc_bus_space pmppc_mem_tag = {
 129         _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
 130         0, 0, 0xffffffff,
 131         NULL,
 132 };
 133 struct powerpc_bus_space pmppc_pci_io_tag = {
 134         _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
 135         0, CPC_PCI_IO_BASE, 0xffffffff,
 136         NULL,
 137 };
 138
 139 static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)]
 140     __attribute__((aligned(8)));
 141
 142
 143 #ifdef KGDB
 144 char kgdb_devname[] = KGDB_DEVNAME;
 145 int comkgdbaddr = KGDB_DEVADDR;
 146 int comkgdbrate = KGDB_DEVRATE;
 147
 148 #ifndef KGDB_DEVMODE
 149 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
 150 #endif
 151 int comkgdbmode = KGDB_DEVMODE;
 152
 153 void kgdb_port_init(void);
 154 #endif /* KGDB */
 155
 156 /*
 157  * Global variables used here and there
 158  */
 159 struct mem_region physmemr[2], availmemr[2];
 160
 161 struct a_config a_config;
 162
 163 void initppc(u_int, u_int, u_int, void *); /* Called from locore */
 164 void pmppc_setup(void);
 165 void setleds(int leds);
 166
 167 /*
 168  * Force cpu_info to be in the data segment to avoid the
 169  * memset() blowing away the data set up by locore.S.
 170  */
 171 #if 0
 172  /* this is defined in powerpc/oea/cpu_subr.c, I don't understand the above
 173   * comment however.
 174   */
 175 struct cpu_info cpu_info[1] = { { .ci_curlwp = &lwp0, }, };
 176 #endif
 177
 178 void
 179 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo)
 180 {
 181         extern void consinit(void);
 182         extern u_long ticks_per_sec;
 183         extern unsigned char edata[], end[];
 184
 185         memset(&edata, 0, end - edata); /* clear BSS */
 186
 187         pmppc_setup();
 188
 189         physmemr[0].start = 0;
 190         physmemr[0].size = a_config.a_mem_size;
 191         physmemr[1].size = 0;
 192         availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
 193         availmemr[0].size = a_config.a_mem_size - availmemr[0].start;
 194         availmemr[1].size = 0;
 195
 196 #ifdef BOOTHOWTO
 197         /*
 198          * boothowto
 199          */
 200         boothowto = BOOTHOWTO;
 201 #endif
 202
 203         if (bus_space_init(&pmppc_mem_tag, "iomem",
 204                            ex_storage[0], sizeof(ex_storage[0])))
 205                 panic("bus_space_init failed");
 206
 207         /*
 208          * Get CPU clock
 209          */
 210         ticks_per_sec = a_config.a_bus_freq;
 211         ticks_per_sec /= 4;     /* 4 cycles per DEC tick */
 212         cpu_timebase = ticks_per_sec;
 213         cpu_initclocks();
 214
 215         /*
 216          * Initialize the BAT registers
 217          */
 218         oea_batinit(
 219             PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */
 220             CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */
 221             CPC_PCI_IO_BASE,  BAT_BL_128M, /* PCI I/O 128M area */
 222             0);
 223
 224         /*
 225          * Set up trap vectors
 226          */
 227         oea_init(NULL);
 228
 229         /*
 230          * Set up console.
 231          */
 232         consinit();             /* XXX should not be here */
 233
 234         printf("console set up\n");
 235
 236         /*
 237          * Set the page size.
 238          */
 239         uvm_setpagesize();
 240
 241         /*
 242          * Initialize pmap module.
 243          */
 244         pmap_bootstrap(startkernel, endkernel);
 245
 246 #ifdef IPKDB
 247         /*
 248          * Now trap to IPKDB
 249          */
 250         ipkdb_init();
 251         if (boothowto & RB_KDB)
 252                 ipkdb_connect(0);
 253 #endif
 254 #ifdef KGDB
 255         kgdb_port_init();
 256         if (boothowto & RB_KDB) {
 257                 kgdb_debug_init = 1;
 258                 kgdb_connect(1);
 259         }
 260 #endif
 261 }
 262
 263 void
 264 mem_regions(struct mem_region **mem, struct mem_region **avail)
 265 {
 266         *mem = physmemr;
 267         *avail = availmemr;
 268 }
 269
 270 /*
 271  * Machine dependent startup code.
 272  */
 273 void
 274 cpu_startup(void)
 275 {
 276
 277         oea_startup(NULL);
 278
 279         /*
 280          * Now that we have VM, malloc()s are OK in bus_space.
 281          */
 282         bus_space_mallocok();
 283
 284         /* Set up the PCI bus tag. */
 285         if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0))
 286                 panic("bus_space_init pci failed");
 287
 288         /* Set up interrupt controller */
 289         cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE,
 290             CPC_INTR_MASK(PMPPC_I_ETH_INT), 0);
 291
 292         pic_init();
 293         (void)setup_cpc700();
 294         oea_install_extint(pic_ext_intr);
 295
 296 #if 0
 297 /* XXX doesn't seem to be needed anymore */
 298         /*
 299          * Now allow hardware interrupts.
 300          */
 301         __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
 302             : "=r"(msr) : "K"(PSL_EE));
 303 #endif
 304 }
 305
 306 /*
 307  * consinit
 308  * Initialize system console.
 309  */
 310 void
 311 consinit(void)
 312 {
 313         static int initted;
 314 #if (NCOM > 0)
 315         bus_space_tag_t tag;
 316 #endif
 317
 318         if (initted)
 319                 return;
 320         initted = 1;
 321
 322 #if (NCOM > 0)
 323         tag = &pmppc_mem_tag;
 324
 325         if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq),
 326             COM_TYPE_NORMAL,
 327             ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)))
 328                 panic("can't init serial console");
 329         else
 330                 return;
 331 #endif
 332
 333         panic("console device missing -- serial console not in kernel");
 334         /* Of course, this is moot if there is no console... */
 335 }
 336
 337 #ifdef KGDB
 338 void
 339 kgdb_port_init(void)
 340 {
 341 #if (NCOM > 0)
 342         if(!strcmp(kgdb_devname, "com")) {
 343                 bus_space_tag_t tag = &pmppc_mem_tag;
 344                 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate,
 345                                 CPC_COM_SPEED(a_config.a_bus_freq),
 346                                 COM_TYPE_NORMAL, comkgdbmode);
 347         }
 348 #endif
 349 }
 350 #endif
 351
 352 /*
 353  * Halt or reboot the machine after syncing/dumping according to howto.
 354  */
 355 void
 356 cpu_reboot(int howto, char *what)
 357 {
 358         static int syncing;
 359         static char str[256];
 360         char *ap = str, *ap1 = ap;
 361         extern void disable_intr(void);
 362
 363         boothowto = howto;
 364         if (!cold && !(howto & RB_NOSYNC) && !syncing) {
 365                 syncing = 1;
 366                 vfs_shutdown();         /* sync */
 367                 resettodr();            /* set wall clock */
 368         }
 369         splhigh();
 370         if (howto & RB_HALT) {
 371                 doshutdownhooks();
 372                 pmf_system_shutdown(boothowto);
 373                 printf("halted\n\n");
 374                 while(1);
 375         }
 376         if (!cold && (howto & RB_DUMP))
 377                 oea_dumpsys();
 378         doshutdownhooks();
 379
 380         pmf_system_shutdown(boothowto);
 381         printf("rebooting\n\n");
 382         if (what && *what) {
 383                 if (strlen(what) > sizeof str - 5)
 384                         printf("boot string too large, ignored\n");
 385                 else {
 386                         strcpy(str, what);
 387                         ap1 = ap = str + strlen(str);
 388                         *ap++ = ' ';
 389                 }
 390         }
 391         *ap++ = '-';
 392         if (howto & RB_SINGLE)
 393                 *ap++ = 's';
 394         if (howto & RB_KDB)
 395                 *ap++ = 'd';
 396         *ap++ = 0;
 397         if (ap[-2] == '-')
 398                 *ap1 = 0;
 399
 400         disable_intr();
 401
 402         /* Write the two byte reset sequence to the reset register. */
 403         out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1);
 404         out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2);
 405
 406         while (1);
 407 }
 408
 409 void
 410 setleds(int leds)
 411 {
 412         out8(PMPPC_LEDS, leds);
 413 }
 414
 415 void
 416 pmppc_setup(void)
 417 {
 418         uint config0, config1;
 419
 420         config0 = in8(PMPPC_CONFIG0);
 421         config1 = in8(PMPPC_CONFIG1);
 422
 423         /* from page 2-8 in the Artesyn User's manual */
 424         a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM;
 425         a_config.a_has_ecc = (config1 & 0x40) != 0;
 426         switch (config1 & 0x30) {
 427         case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break;
 428         case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break;
 429         case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break;
 430         case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break;
 431         }
 432         a_config.a_l2_cache = (config1 >> 2) & 3;
 433         switch (config1 & 0x03) {
 434         case 0x00: a_config.a_bus_freq = 66666666; break;
 435         case 0x01: a_config.a_bus_freq = 83333333; break;
 436         case 0x02: a_config.a_bus_freq = 100000000; break;
 437         case 0x03: a_config.a_bus_freq = 0; break; /* XXX */
 438         }
 439         a_config.a_is_monarch = (config0 & 0x80) == 0;
 440         a_config.a_has_eth = (config0 & 0x20) != 0;
 441         a_config.a_has_rtc = (config0 & 0x10) == 0;
 442         switch (config0 & 0x0c) {
 443         case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break;
 444         case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break;
 445         case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break;
 446         case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break;
 447         }
 448         switch (config0 & 0x03) {
 449         case 0x00: a_config.a_flash_width = 64; break;
 450         case 0x01: a_config.a_flash_width = 32; break;
 451         case 0x02: a_config.a_flash_width = 16; break;
 452         case 0x03: a_config.a_flash_width = 0; break;
 453         }
 454 }