arch/mips/bcm47xx/setup.c

   1 /*
   2  *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
   3  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   4  *  Copyright (C) 2006 Michael Buesch <m@bues.ch>
   5  *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
   6  *  Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  14  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  15  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  16  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  17  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  19  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  21  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  *  You should have received a copy of the  GNU General Public License along
  25  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  26  *  675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/types.h>
  30 #include <linux/ssb/ssb.h>
  31 #include <linux/ssb/ssb_embedded.h>
  32 #include <linux/bcma/bcma_soc.h>
  33 #include <asm/bootinfo.h>
  34 #include <asm/reboot.h>
  35 #include <asm/time.h>
  36 #include <bcm47xx.h>
  37 #include <asm/mach-bcm47xx/nvram.h>
  38
  39 union bcm47xx_bus bcm47xx_bus;
  40 EXPORT_SYMBOL(bcm47xx_bus);
  41
  42 enum bcm47xx_bus_type bcm47xx_bus_type;
  43 EXPORT_SYMBOL(bcm47xx_bus_type);
  44
  45 static void bcm47xx_machine_restart(char *command)
  46 {
  47         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  48         local_irq_disable();
  49         /* Set the watchdog timer to reset immediately */
  50         switch (bcm47xx_bus_type) {
  51 #ifdef CONFIG_BCM47XX_SSB
  52         case BCM47XX_BUS_TYPE_SSB:
  53                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
  54                 break;
  55 #endif
  56 #ifdef CONFIG_BCM47XX_BCMA
  57         case BCM47XX_BUS_TYPE_BCMA:
  58                 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
  59                 break;
  60 #endif
  61         }
  62         while (1)
  63                 cpu_relax();
  64 }
  65
  66 static void bcm47xx_machine_halt(void)
  67 {
  68         /* Disable interrupts and watchdog and spin forever */
  69         local_irq_disable();
  70         switch (bcm47xx_bus_type) {
  71 #ifdef CONFIG_BCM47XX_SSB
  72         case BCM47XX_BUS_TYPE_SSB:
  73                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
  74                 break;
  75 #endif
  76 #ifdef CONFIG_BCM47XX_BCMA
  77         case BCM47XX_BUS_TYPE_BCMA:
  78                 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
  79                 break;
  80 #endif
  81         }
  82         while (1)
  83                 cpu_relax();
  84 }
  85
  86 #ifdef CONFIG_BCM47XX_SSB
  87 #define READ_FROM_NVRAM(_outvar, name, buf) \
  88         if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
  89                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  90
  91 #define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \
  92         if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \
  93             nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\
  94                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  95
  96 static inline int nvram_getprefix(const char *prefix, char *name,
  97                                   char *buf, int len)
  98 {
  99         if (prefix) {
 100                 char key[100];
 101
 102                 snprintf(key, sizeof(key), "%s%s", prefix, name);
 103                 return nvram_getenv(key, buf, len);
 104         }
 105
 106         return nvram_getenv(name, buf, len);
 107 }
 108
 109 static u32 nvram_getu32(const char *name, char *buf, int len)
 110 {
 111         int rv;
 112         char key[100];
 113         u16 var0, var1;
 114
 115         snprintf(key, sizeof(key), "%s0", name);
 116         rv = nvram_getenv(key, buf, len);
 117         /* return 0 here so this looks like unset */
 118         if (rv < 0)
 119                 return 0;
 120         var0 = simple_strtoul(buf, NULL, 0);
 121
 122         snprintf(key, sizeof(key), "%s1", name);
 123         rv = nvram_getenv(key, buf, len);
 124         if (rv < 0)
 125                 return 0;
 126         var1 = simple_strtoul(buf, NULL, 0);
 127         return var1 << 16 | var0;
 128 }
 129
 130 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
 131 {
 132         char buf[100];
 133         u32 boardflags;
 134
 135         memset(sprom, 0, sizeof(struct ssb_sprom));
 136
 137         sprom->revision = 1; /* Fallback: Old hardware does not define this. */
 138         READ_FROM_NVRAM(revision, "sromrev", buf);
 139         if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 ||
 140             nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0)
 141                 nvram_parse_macaddr(buf, sprom->il0mac);
 142         if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
 143                 nvram_parse_macaddr(buf, sprom->et0mac);
 144         if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
 145                 nvram_parse_macaddr(buf, sprom->et1mac);
 146         READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
 147         READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
 148         READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
 149         READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
 150         READ_FROM_NVRAM(board_rev, "boardrev", buf);
 151         READ_FROM_NVRAM(country_code, "ccode", buf);
 152         READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
 153         READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
 154         READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
 155         READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
 156         READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
 157         READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
 158         READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
 159         READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
 160         READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
 161         READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
 162         READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
 163         READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
 164         READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
 165         READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
 166         READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf);
 167         READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf);
 168         READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf);
 169         READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf);
 170         READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf);
 171         READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf);
 172         READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf);
 173         READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf);
 174         READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf);
 175         READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf);
 176         READ_FROM_NVRAM(tri2g, "tri2g", buf);
 177         READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
 178         READ_FROM_NVRAM(tri5g, "tri5g", buf);
 179         READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
 180         READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf);
 181         READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf);
 182         READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf);
 183         READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf);
 184         READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf);
 185         READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf);
 186         READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf);
 187         READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf);
 188         READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf);
 189         READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf);
 190         READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf);
 191         READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf);
 192         READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf);
 193         READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf);
 194         READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf);
 195         READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf);
 196         READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
 197         READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
 198         READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
 199         READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
 200         READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
 201         READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
 202         READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
 203         READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
 204         READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
 205         READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
 206         READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
 207
 208         sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf));
 209         sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf));
 210         sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf));
 211         sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf));
 212
 213         READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf);
 214         READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf);
 215         READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf);
 216         READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf);
 217         memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24,
 218                sizeof(sprom->antenna_gain.ghz5));
 219
 220         if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
 221                 boardflags = simple_strtoul(buf, NULL, 0);
 222                 if (boardflags) {
 223                         sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
 224                         sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
 225                 }
 226         }
 227         if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
 228                 boardflags = simple_strtoul(buf, NULL, 0);
 229                 if (boardflags) {
 230                         sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
 231                         sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
 232                 }
 233         }
 234 }
 235
 236 int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
 237 {
 238         char prefix[10];
 239
 240         if (bus->bustype == SSB_BUSTYPE_PCI) {
 241                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 242                          bus->host_pci->bus->number + 1,
 243                          PCI_SLOT(bus->host_pci->devfn));
 244                 bcm47xx_fill_sprom(out, prefix);
 245                 return 0;
 246         } else {
 247                 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
 248                 return -EINVAL;
 249         }
 250 }
 251
 252 static int bcm47xx_get_invariants(struct ssb_bus *bus,
 253                                    struct ssb_init_invariants *iv)
 254 {
 255         char buf[20];
 256
 257         /* Fill boardinfo structure */
 258         memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
 259
 260         if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
 261                 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
 262         else
 263                 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
 264         if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
 265                 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
 266         if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
 267                 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
 268
 269         bcm47xx_fill_sprom(&iv->sprom, NULL);
 270
 271         if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
 272                 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
 273
 274         return 0;
 275 }
 276
 277 static void __init bcm47xx_register_ssb(void)
 278 {
 279         int err;
 280         char buf[100];
 281         struct ssb_mipscore *mcore;
 282
 283         err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
 284         if (err)
 285                 printk(KERN_WARNING "bcm47xx: someone else already registered"
 286                         " a ssb SPROM callback handler (err %d)\n", err);
 287
 288         err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
 289                                       bcm47xx_get_invariants);
 290         if (err)
 291                 panic("Failed to initialize SSB bus (err %d)\n", err);
 292
 293         mcore = &bcm47xx_bus.ssb.mipscore;
 294         if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 295                 if (strstr(buf, "console=ttyS1")) {
 296                         struct ssb_serial_port port;
 297
 298                         printk(KERN_DEBUG "Swapping serial ports!\n");
 299                         /* swap serial ports */
 300                         memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 301                         memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
 302                                sizeof(port));
 303                         memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 304                 }
 305         }
 306 }
 307 #endif
 308
 309 #ifdef CONFIG_BCM47XX_BCMA
 310 static void __init bcm47xx_register_bcma(void)
 311 {
 312         int err;
 313
 314         err = bcma_host_soc_register(&bcm47xx_bus.bcma);
 315         if (err)
 316                 panic("Failed to initialize BCMA bus (err %d)\n", err);
 317 }
 318 #endif
 319
 320 void __init plat_mem_setup(void)
 321 {
 322         struct cpuinfo_mips *c = &current_cpu_data;
 323
 324         if (c->cputype == CPU_74K) {
 325                 printk(KERN_INFO "bcm47xx: using bcma bus\n");
 326 #ifdef CONFIG_BCM47XX_BCMA
 327                 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
 328                 bcm47xx_register_bcma();
 329 #endif
 330         } else {
 331                 printk(KERN_INFO "bcm47xx: using ssb bus\n");
 332 #ifdef CONFIG_BCM47XX_SSB
 333                 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
 334                 bcm47xx_register_ssb();
 335 #endif
 336         }
 337
 338         _machine_restart = bcm47xx_machine_restart;
 339         _machine_halt = bcm47xx_machine_halt;
 340         pm_power_off = bcm47xx_machine_halt;
 341 }
 342
 343 static int __init bcm47xx_register_bus_complete(void)
 344 {
 345         switch (bcm47xx_bus_type) {
 346 #ifdef CONFIG_BCM47XX_SSB
 347         case BCM47XX_BUS_TYPE_SSB:
 348                 /* Nothing to do */
 349                 break;
 350 #endif
 351 #ifdef CONFIG_BCM47XX_BCMA
 352         case BCM47XX_BUS_TYPE_BCMA:
 353                 bcma_bus_register(&bcm47xx_bus.bcma.bus);
 354                 break;
 355 #endif
 356         }
 357         return 0;
 358 }
 359 device_initcall(bcm47xx_register_bus_complete);