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  *
   7  *  This program is free software; you can redistribute  it and/or modify it
   8  *  under  the terms of  the GNU General  Public License as published by the
   9  *  Free Software Foundation;  either version 2 of the  License, or (at your
  10  *  option) any later version.
  11  *
  12  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  13  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  14  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  15  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  16  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  17  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  18  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  19  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  20  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  21  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  22  *
  23  *  You should have received a copy of the  GNU General Public License along
  24  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  25  *  675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #include <linux/types.h>
  29 #include <linux/ssb/ssb.h>
  30 #include <linux/ssb/ssb_embedded.h>
  31 #include <asm/bootinfo.h>
  32 #include <asm/reboot.h>
  33 #include <asm/time.h>
  34 #include <bcm47xx.h>
  35 #include <asm/mach-bcm47xx/nvram.h>
  36
  37 struct ssb_bus ssb_bcm47xx;
  38 EXPORT_SYMBOL(ssb_bcm47xx);
  39
  40 static void bcm47xx_machine_restart(char *command)
  41 {
  42         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  43         local_irq_disable();
  44         /* Set the watchdog timer to reset immediately */
  45         ssb_watchdog_timer_set(&ssb_bcm47xx, 1);
  46         while (1)
  47                 cpu_relax();
  48 }
  49
  50 static void bcm47xx_machine_halt(void)
  51 {
  52         /* Disable interrupts and watchdog and spin forever */
  53         local_irq_disable();
  54         ssb_watchdog_timer_set(&ssb_bcm47xx, 0);
  55         while (1)
  56                 cpu_relax();
  57 }
  58
  59 #define READ_FROM_NVRAM(_outvar, name, buf) \
  60         if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
  61                 sprom->_outvar = simple_strtoul(buf, NULL, 0);
  62
  63 static inline int nvram_getprefix(const char *prefix, char *name,
  64                                   char *buf, int len)
  65 {
  66         if (prefix) {
  67                 char key[100];
  68
  69                 snprintf(key, sizeof(key), "%s%s", prefix, name);
  70                 return nvram_getenv(key, buf, len);
  71         }
  72
  73         return nvram_getenv(name, buf, len);
  74 }
  75
  76 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
  77 {
  78         char buf[100];
  79         u32 boardflags;
  80
  81         memset(sprom, 0, sizeof(struct ssb_sprom));
  82
  83         sprom->revision = 1; /* Fallback: Old hardware does not define this. */
  84         READ_FROM_NVRAM(revision, "sromrev", buf);
  85         if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0)
  86                 nvram_parse_macaddr(buf, sprom->il0mac);
  87         if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
  88                 nvram_parse_macaddr(buf, sprom->et0mac);
  89         if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
  90                 nvram_parse_macaddr(buf, sprom->et1mac);
  91         READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
  92         READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
  93         READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
  94         READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
  95         READ_FROM_NVRAM(board_rev, "boardrev", buf);
  96         READ_FROM_NVRAM(country_code, "ccode", buf);
  97         READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
  98         READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
  99         READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
 100         READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
 101         READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
 102         READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
 103         READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
 104         READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
 105         READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
 106         READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
 107         READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
 108         READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
 109         READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
 110         READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
 111         READ_FROM_NVRAM(gpio0, "wl0gpio0", buf);
 112         READ_FROM_NVRAM(gpio1, "wl0gpio1", buf);
 113         READ_FROM_NVRAM(gpio2, "wl0gpio2", buf);
 114         READ_FROM_NVRAM(gpio3, "wl0gpio3", buf);
 115         READ_FROM_NVRAM(maxpwr_bg, "pa0maxpwr", buf);
 116         READ_FROM_NVRAM(maxpwr_al, "pa1lomaxpwr", buf);
 117         READ_FROM_NVRAM(maxpwr_a, "pa1maxpwr", buf);
 118         READ_FROM_NVRAM(maxpwr_ah, "pa1himaxpwr", buf);
 119         READ_FROM_NVRAM(itssi_a, "pa1itssit", buf);
 120         READ_FROM_NVRAM(itssi_bg, "pa0itssit", buf);
 121         READ_FROM_NVRAM(tri2g, "tri2g", buf);
 122         READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
 123         READ_FROM_NVRAM(tri5g, "tri5g", buf);
 124         READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
 125         READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
 126         READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
 127         READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
 128         READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
 129         READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
 130         READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
 131         READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
 132         READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
 133         READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
 134         READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
 135         READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
 136         READ_FROM_NVRAM(ofdm2gpo, "ofdm2gpo", buf);
 137         READ_FROM_NVRAM(ofdm5glpo, "ofdm5glpo", buf);
 138         READ_FROM_NVRAM(ofdm5gpo, "ofdm5gpo", buf);
 139         READ_FROM_NVRAM(ofdm5ghpo, "ofdm5ghpo", buf);
 140
 141         if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
 142                 boardflags = simple_strtoul(buf, NULL, 0);
 143                 if (boardflags) {
 144                         sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
 145                         sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
 146                 }
 147         }
 148         if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
 149                 boardflags = simple_strtoul(buf, NULL, 0);
 150                 if (boardflags) {
 151                         sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
 152                         sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
 153                 }
 154         }
 155 }
 156
 157 static int bcm47xx_get_invariants(struct ssb_bus *bus,
 158                                    struct ssb_init_invariants *iv)
 159 {
 160         char buf[20];
 161
 162         /* Fill boardinfo structure */
 163         memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
 164
 165         if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
 166                 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
 167         else
 168                 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
 169         if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
 170                 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
 171         if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
 172                 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
 173
 174         bcm47xx_fill_sprom(&iv->sprom, NULL);
 175
 176         if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
 177                 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
 178
 179         return 0;
 180 }
 181
 182 void __init plat_mem_setup(void)
 183 {
 184         int err;
 185         char buf[100];
 186         struct ssb_mipscore *mcore;
 187
 188         err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
 189                                       bcm47xx_get_invariants);
 190         if (err)
 191                 panic("Failed to initialize SSB bus (err %d)\n", err);
 192
 193         mcore = &ssb_bcm47xx.mipscore;
 194         if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 195                 if (strstr(buf, "console=ttyS1")) {
 196                         struct ssb_serial_port port;
 197
 198                         printk(KERN_DEBUG "Swapping serial ports!\n");
 199                         /* swap serial ports */
 200                         memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 201                         memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
 202                                sizeof(port));
 203                         memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 204                 }
 205         }
 206
 207         _machine_restart = bcm47xx_machine_restart;
 208         _machine_halt = bcm47xx_machine_halt;
 209         pm_power_off = bcm47xx_machine_halt;
 210 }