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 <mb@bu3sch.de>
   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 <asm/bootinfo.h>
  33 #include <asm/reboot.h>
  34 #include <asm/time.h>
  35 #include <bcm47xx.h>
  36 #include <asm/mach-bcm47xx/nvram.h>
  37
  38 struct ssb_bus ssb_bcm47xx;
  39 EXPORT_SYMBOL(ssb_bcm47xx);
  40
  41 static void bcm47xx_machine_restart(char *command)
  42 {
  43         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  44         local_irq_disable();
  45         /* Set the watchdog timer to reset immediately */
  46         ssb_watchdog_timer_set(&ssb_bcm47xx, 1);
  47         while (1)
  48                 cpu_relax();
  49 }
  50
  51 static void bcm47xx_machine_halt(void)
  52 {
  53         /* Disable interrupts and watchdog and spin forever */
  54         local_irq_disable();
  55         ssb_watchdog_timer_set(&ssb_bcm47xx, 0);
  56         while (1)
  57                 cpu_relax();
  58 }
  59
  60 #define READ_FROM_NVRAM(_outvar, name, buf) \
  61         if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
  62                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  63
  64 #define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \
  65         if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \
  66             nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\
  67                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  68
  69 static inline int nvram_getprefix(const char *prefix, char *name,
  70                                   char *buf, int len)
  71 {
  72         if (prefix) {
  73                 char key[100];
  74
  75                 snprintf(key, sizeof(key), "%s%s", prefix, name);
  76                 return nvram_getenv(key, buf, len);
  77         }
  78
  79         return nvram_getenv(name, buf, len);
  80 }
  81
  82 static u32 nvram_getu32(const char *name, char *buf, int len)
  83 {
  84         int rv;
  85         char key[100];
  86         u16 var0, var1;
  87
  88         snprintf(key, sizeof(key), "%s0", name);
  89         rv = nvram_getenv(key, buf, len);
  90         /* return 0 here so this looks like unset */
  91         if (rv < 0)
  92                 return 0;
  93         var0 = simple_strtoul(buf, NULL, 0);
  94
  95         snprintf(key, sizeof(key), "%s1", name);
  96         rv = nvram_getenv(key, buf, len);
  97         if (rv < 0)
  98                 return 0;
  99         var1 = simple_strtoul(buf, NULL, 0);
 100         return var1 << 16 | var0;
 101 }
 102
 103 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
 104 {
 105         char buf[100];
 106         u32 boardflags;
 107
 108         memset(sprom, 0, sizeof(struct ssb_sprom));
 109
 110         sprom->revision = 1; /* Fallback: Old hardware does not define this. */
 111         READ_FROM_NVRAM(revision, "sromrev", buf);
 112         if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 ||
 113             nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0)
 114                 nvram_parse_macaddr(buf, sprom->il0mac);
 115         if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
 116                 nvram_parse_macaddr(buf, sprom->et0mac);
 117         if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
 118                 nvram_parse_macaddr(buf, sprom->et1mac);
 119         READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
 120         READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
 121         READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
 122         READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
 123         READ_FROM_NVRAM(board_rev, "boardrev", buf);
 124         READ_FROM_NVRAM(country_code, "ccode", buf);
 125         READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
 126         READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
 127         READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
 128         READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
 129         READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
 130         READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
 131         READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
 132         READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
 133         READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
 134         READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
 135         READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
 136         READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
 137         READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
 138         READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
 139         READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf);
 140         READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf);
 141         READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf);
 142         READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf);
 143         READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf);
 144         READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf);
 145         READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf);
 146         READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf);
 147         READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf);
 148         READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf);
 149         READ_FROM_NVRAM(tri2g, "tri2g", buf);
 150         READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
 151         READ_FROM_NVRAM(tri5g, "tri5g", buf);
 152         READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
 153         READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf);
 154         READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf);
 155         READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf);
 156         READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf);
 157         READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf);
 158         READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf);
 159         READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf);
 160         READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf);
 161         READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf);
 162         READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf);
 163         READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf);
 164         READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf);
 165         READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf);
 166         READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf);
 167         READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf);
 168         READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf);
 169         READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
 170         READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
 171         READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
 172         READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
 173         READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
 174         READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
 175         READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
 176         READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
 177         READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
 178         READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
 179         READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
 180
 181         sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf));
 182         sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf));
 183         sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf));
 184         sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf));
 185
 186         READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf);
 187         READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf);
 188         READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf);
 189         READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf);
 190         memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24,
 191                sizeof(sprom->antenna_gain.ghz5));
 192
 193         if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
 194                 boardflags = simple_strtoul(buf, NULL, 0);
 195                 if (boardflags) {
 196                         sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
 197                         sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
 198                 }
 199         }
 200         if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
 201                 boardflags = simple_strtoul(buf, NULL, 0);
 202                 if (boardflags) {
 203                         sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
 204                         sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
 205                 }
 206         }
 207 }
 208
 209 int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
 210 {
 211         char prefix[10];
 212
 213         if (bus->bustype == SSB_BUSTYPE_PCI) {
 214                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 215                          bus->host_pci->bus->number + 1,
 216                          PCI_SLOT(bus->host_pci->devfn));
 217                 bcm47xx_fill_sprom(out, prefix);
 218                 return 0;
 219         } else {
 220                 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
 221                 return -EINVAL;
 222         }
 223 }
 224
 225 static int bcm47xx_get_invariants(struct ssb_bus *bus,
 226                                    struct ssb_init_invariants *iv)
 227 {
 228         char buf[20];
 229
 230         /* Fill boardinfo structure */
 231         memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
 232
 233         if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
 234                 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
 235         else
 236                 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
 237         if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
 238                 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
 239         if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
 240                 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
 241
 242         bcm47xx_fill_sprom(&iv->sprom, NULL);
 243
 244         if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
 245                 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
 246
 247         return 0;
 248 }
 249
 250 void __init plat_mem_setup(void)
 251 {
 252         int err;
 253         char buf[100];
 254         struct ssb_mipscore *mcore;
 255
 256         err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
 257         if (err)
 258                 printk(KERN_WARNING "bcm47xx: someone else already registered"
 259                         " a ssb SPROM callback handler (err %d)\n", err);
 260
 261         err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
 262                                       bcm47xx_get_invariants);
 263         if (err)
 264                 panic("Failed to initialize SSB bus (err %d)\n", err);
 265
 266         mcore = &ssb_bcm47xx.mipscore;
 267         if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 268                 if (strstr(buf, "console=ttyS1")) {
 269                         struct ssb_serial_port port;
 270
 271                         printk(KERN_DEBUG "Swapping serial ports!\n");
 272                         /* swap serial ports */
 273                         memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 274                         memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
 275                                sizeof(port));
 276                         memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 277                 }
 278         }
 279
 280         _machine_restart = bcm47xx_machine_restart;
 281         _machine_halt = bcm47xx_machine_halt;
 282         pm_power_off = bcm47xx_machine_halt;
 283 }