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/export.h>
  30 #include <linux/types.h>
  31 #include <linux/ssb/ssb.h>
  32 #include <linux/ssb/ssb_embedded.h>
  33 #include <linux/bcma/bcma_soc.h>
  34 #include <asm/bootinfo.h>
  35 #include <asm/reboot.h>
  36 #include <asm/time.h>
  37 #include <bcm47xx.h>
  38 #include <asm/mach-bcm47xx/nvram.h>
  39
  40 union bcm47xx_bus bcm47xx_bus;
  41 EXPORT_SYMBOL(bcm47xx_bus);
  42
  43 enum bcm47xx_bus_type bcm47xx_bus_type;
  44 EXPORT_SYMBOL(bcm47xx_bus_type);
  45
  46 static void bcm47xx_machine_restart(char *command)
  47 {
  48         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  49         local_irq_disable();
  50         /* Set the watchdog timer to reset immediately */
  51         switch (bcm47xx_bus_type) {
  52 #ifdef CONFIG_BCM47XX_SSB
  53         case BCM47XX_BUS_TYPE_SSB:
  54                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
  55                 break;
  56 #endif
  57 #ifdef CONFIG_BCM47XX_BCMA
  58         case BCM47XX_BUS_TYPE_BCMA:
  59                 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
  60                 break;
  61 #endif
  62         }
  63         while (1)
  64                 cpu_relax();
  65 }
  66
  67 static void bcm47xx_machine_halt(void)
  68 {
  69         /* Disable interrupts and watchdog and spin forever */
  70         local_irq_disable();
  71         switch (bcm47xx_bus_type) {
  72 #ifdef CONFIG_BCM47XX_SSB
  73         case BCM47XX_BUS_TYPE_SSB:
  74                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
  75                 break;
  76 #endif
  77 #ifdef CONFIG_BCM47XX_BCMA
  78         case BCM47XX_BUS_TYPE_BCMA:
  79                 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
  80                 break;
  81 #endif
  82         }
  83         while (1)
  84                 cpu_relax();
  85 }
  86
  87 #ifdef CONFIG_BCM47XX_SSB
  88 #define READ_FROM_NVRAM(_outvar, name, buf) \
  89         if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
  90                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  91
  92 #define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \
  93         if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \
  94             nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\
  95                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  96
  97 static inline int nvram_getprefix(const char *prefix, char *name,
  98                                   char *buf, int len)
  99 {
 100         if (prefix) {
 101                 char key[100];
 102
 103                 snprintf(key, sizeof(key), "%s%s", prefix, name);
 104                 return nvram_getenv(key, buf, len);
 105         }
 106
 107         return nvram_getenv(name, buf, len);
 108 }
 109
 110 static u32 nvram_getu32(const char *name, char *buf, int len)
 111 {
 112         int rv;
 113         char key[100];
 114         u16 var0, var1;
 115
 116         snprintf(key, sizeof(key), "%s0", name);
 117         rv = nvram_getenv(key, buf, len);
 118         /* return 0 here so this looks like unset */
 119         if (rv < 0)
 120                 return 0;
 121         var0 = simple_strtoul(buf, NULL, 0);
 122
 123         snprintf(key, sizeof(key), "%s1", name);
 124         rv = nvram_getenv(key, buf, len);
 125         if (rv < 0)
 126                 return 0;
 127         var1 = simple_strtoul(buf, NULL, 0);
 128         return var1 << 16 | var0;
 129 }
 130
 131 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
 132 {
 133         char buf[100];
 134         u32 boardflags;
 135
 136         memset(sprom, 0, sizeof(struct ssb_sprom));
 137
 138         sprom->revision = 1; /* Fallback: Old hardware does not define this. */
 139         READ_FROM_NVRAM(revision, "sromrev", buf);
 140         if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 ||
 141             nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0)
 142                 nvram_parse_macaddr(buf, sprom->il0mac);
 143         if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
 144                 nvram_parse_macaddr(buf, sprom->et0mac);
 145         if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
 146                 nvram_parse_macaddr(buf, sprom->et1mac);
 147         READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
 148         READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
 149         READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
 150         READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
 151         READ_FROM_NVRAM(board_rev, "boardrev", buf);
 152         READ_FROM_NVRAM(country_code, "ccode", buf);
 153         READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
 154         READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
 155         READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
 156         READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
 157         READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
 158         READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
 159         READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
 160         READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
 161         READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
 162         READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
 163         READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
 164         READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
 165         READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
 166         READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
 167         READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf);
 168         READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf);
 169         READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf);
 170         READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf);
 171         READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf);
 172         READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf);
 173         READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf);
 174         READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf);
 175         READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf);
 176         READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf);
 177         READ_FROM_NVRAM(tri2g, "tri2g", buf);
 178         READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
 179         READ_FROM_NVRAM(tri5g, "tri5g", buf);
 180         READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
 181         READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf);
 182         READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf);
 183         READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf);
 184         READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf);
 185         READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf);
 186         READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf);
 187         READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf);
 188         READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf);
 189         READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf);
 190         READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf);
 191         READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf);
 192         READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf);
 193         READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf);
 194         READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf);
 195         READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf);
 196         READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf);
 197         READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
 198         READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
 199         READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
 200         READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
 201         READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
 202         READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
 203         READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
 204         READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
 205         READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
 206         READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
 207         READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
 208
 209         sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf));
 210         sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf));
 211         sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf));
 212         sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf));
 213
 214         READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf);
 215         READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf);
 216         READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf);
 217         READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf);
 218         memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24,
 219                sizeof(sprom->antenna_gain.ghz5));
 220
 221         if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
 222                 boardflags = simple_strtoul(buf, NULL, 0);
 223                 if (boardflags) {
 224                         sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
 225                         sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
 226                 }
 227         }
 228         if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
 229                 boardflags = simple_strtoul(buf, NULL, 0);
 230                 if (boardflags) {
 231                         sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
 232                         sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
 233                 }
 234         }
 235 }
 236
 237 int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
 238 {
 239         char prefix[10];
 240
 241         if (bus->bustype == SSB_BUSTYPE_PCI) {
 242                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 243                          bus->host_pci->bus->number + 1,
 244                          PCI_SLOT(bus->host_pci->devfn));
 245                 bcm47xx_fill_sprom(out, prefix);
 246                 return 0;
 247         } else {
 248                 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
 249                 return -EINVAL;
 250         }
 251 }
 252
 253 static int bcm47xx_get_invariants(struct ssb_bus *bus,
 254                                    struct ssb_init_invariants *iv)
 255 {
 256         char buf[20];
 257
 258         /* Fill boardinfo structure */
 259         memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
 260
 261         if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
 262                 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
 263         else
 264                 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
 265         if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
 266                 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
 267         if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
 268                 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
 269
 270         bcm47xx_fill_sprom(&iv->sprom, NULL);
 271
 272         if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
 273                 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
 274
 275         return 0;
 276 }
 277
 278 static void __init bcm47xx_register_ssb(void)
 279 {
 280         int err;
 281         char buf[100];
 282         struct ssb_mipscore *mcore;
 283
 284         err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
 285         if (err)
 286                 printk(KERN_WARNING "bcm47xx: someone else already registered"
 287                         " a ssb SPROM callback handler (err %d)\n", err);
 288
 289         err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
 290                                       bcm47xx_get_invariants);
 291         if (err)
 292                 panic("Failed to initialize SSB bus (err %d)\n", err);
 293
 294         mcore = &bcm47xx_bus.ssb.mipscore;
 295         if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 296                 if (strstr(buf, "console=ttyS1")) {
 297                         struct ssb_serial_port port;
 298
 299                         printk(KERN_DEBUG "Swapping serial ports!\n");
 300                         /* swap serial ports */
 301                         memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 302                         memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
 303                                sizeof(port));
 304                         memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 305                 }
 306         }
 307 }
 308 #endif
 309
 310 #ifdef CONFIG_BCM47XX_BCMA
 311 static void __init bcm47xx_register_bcma(void)
 312 {
 313         int err;
 314
 315         err = bcma_host_soc_register(&bcm47xx_bus.bcma);
 316         if (err)
 317                 panic("Failed to initialize BCMA bus (err %d)\n", err);
 318 }
 319 #endif
 320
 321 void __init plat_mem_setup(void)
 322 {
 323         struct cpuinfo_mips *c = &current_cpu_data;
 324
 325         if (c->cputype == CPU_74K) {
 326                 printk(KERN_INFO "bcm47xx: using bcma bus\n");
 327 #ifdef CONFIG_BCM47XX_BCMA
 328                 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
 329                 bcm47xx_register_bcma();
 330 #endif
 331         } else {
 332                 printk(KERN_INFO "bcm47xx: using ssb bus\n");
 333 #ifdef CONFIG_BCM47XX_SSB
 334                 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
 335                 bcm47xx_register_ssb();
 336 #endif
 337         }
 338
 339         _machine_restart = bcm47xx_machine_restart;
 340         _machine_halt = bcm47xx_machine_halt;
 341         pm_power_off = bcm47xx_machine_halt;
 342 }
 343
 344 static int __init bcm47xx_register_bus_complete(void)
 345 {
 346         switch (bcm47xx_bus_type) {
 347 #ifdef CONFIG_BCM47XX_SSB
 348         case BCM47XX_BUS_TYPE_SSB:
 349                 /* Nothing to do */
 350                 break;
 351 #endif
 352 #ifdef CONFIG_BCM47XX_BCMA
 353         case BCM47XX_BUS_TYPE_BCMA:
 354                 bcma_bus_register(&bcm47xx_bus.bcma.bus);
 355                 break;
 356 #endif
 357         }
 358         return 0;
 359 }
 360 device_initcall(bcm47xx_register_bus_complete);