arch/mips/bcm47xx/setup.c

   1 /*
   2  *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
   3  *  Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
   4  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   5  *  Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
   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/fw/cfe/cfe_api.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 static void str2eaddr(char *str, char *dest)
  60 {
  61         int i = 0;
  62
  63         if (str == NULL) {
  64                 memset(dest, 0, 6);
  65                 return;
  66         }
  67
  68         for (;;) {
  69                 dest[i++] = (char) simple_strtoul(str, NULL, 16);
  70                 str += 2;
  71                 if (!*str++ || i == 6)
  72                         break;
  73         }
  74 }
  75
  76 static int bcm47xx_get_invariants(struct ssb_bus *bus,
  77                                    struct ssb_init_invariants *iv)
  78 {
  79         char buf[100];
  80
  81         /* Fill boardinfo structure */
  82         memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
  83
  84         if (cfe_getenv("boardvendor", buf, sizeof(buf)) >= 0)
  85                 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
  86         if (cfe_getenv("boardtype", buf, sizeof(buf)) >= 0)
  87                 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
  88         if (cfe_getenv("boardrev", buf, sizeof(buf)) >= 0)
  89                 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
  90
  91         /* Fill sprom structure */
  92         memset(&(iv->sprom), 0, sizeof(struct ssb_sprom));
  93         iv->sprom.revision = 3;
  94
  95         if (cfe_getenv("et0macaddr", buf, sizeof(buf)) >= 0)
  96                 str2eaddr(buf, iv->sprom.et0mac);
  97         if (cfe_getenv("et1macaddr", buf, sizeof(buf)) >= 0)
  98                 str2eaddr(buf, iv->sprom.et1mac);
  99         if (cfe_getenv("et0phyaddr", buf, sizeof(buf)) >= 0)
 100                 iv->sprom.et0phyaddr = simple_strtoul(buf, NULL, 10);
 101         if (cfe_getenv("et1phyaddr", buf, sizeof(buf)) >= 0)
 102                 iv->sprom.et1phyaddr = simple_strtoul(buf, NULL, 10);
 103         if (cfe_getenv("et0mdcport", buf, sizeof(buf)) >= 0)
 104                 iv->sprom.et0mdcport = simple_strtoul(buf, NULL, 10);
 105         if (cfe_getenv("et1mdcport", buf, sizeof(buf)) >= 0)
 106                 iv->sprom.et1mdcport = simple_strtoul(buf, NULL, 10);
 107
 108         return 0;
 109 }
 110
 111 void __init plat_mem_setup(void)
 112 {
 113         int err;
 114
 115         err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
 116                                       bcm47xx_get_invariants);
 117         if (err)
 118                 panic("Failed to initialize SSB bus (err %d)\n", err);
 119
 120         _machine_restart = bcm47xx_machine_restart;
 121         _machine_halt = bcm47xx_machine_halt;
 122         pm_power_off = bcm47xx_machine_halt;
 123 }