target/linux/brcm47xx/files/arch/mips/bcm947xx/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) 2006-2008 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/init.h>
  29 #include <linux/types.h>
  30 #include <linux/tty.h>
  31 #include <linux/serial.h>
  32 #include <linux/serial_core.h>
  33 #include <linux/serial_reg.h>
  34 #include <linux/serial_8250.h>
  35 #include <asm/bootinfo.h>
  36 #include <asm/time.h>
  37 #include <asm/reboot.h>
  38 #include <asm/cfe.h>
  39 #include <linux/pm.h>
  40 #include <linux/ssb/ssb.h>
  41 #include <linux/ssb/ssb_embedded.h>
  42
  43 #include <nvram.h>
  44
  45 extern void bcm47xx_pci_init(void);
  46 extern void bcm47xx_time_init(void);
  47
  48 struct ssb_bus ssb;
  49
  50 static void bcm47xx_machine_restart(char *command)
  51 {
  52         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  53         local_irq_disable();
  54         /* CFE has a reboot callback, but that does not work.
  55          * Oopses with: Reserved instruction in kernel code.
  56          */
  57
  58         /* Set the watchdog timer to reset immediately */
  59         if (ssb_watchdog_timer_set(&ssb, 1))
  60                 printk(KERN_EMERG "SSB watchdog-triggered reboot failed!\n");
  61         while (1)
  62                 cpu_relax();
  63 }
  64
  65 static void bcm47xx_machine_halt(void)
  66 {
  67         /* Disable interrupts and watchdog and spin forever */
  68         local_irq_disable();
  69         if (ssb_watchdog_timer_set(&ssb, 0))
  70                 printk(KERN_EMERG "Failed to disable SSB watchdog!\n");
  71         while (1)
  72                 cpu_relax();
  73 }
  74
  75 static void e_aton(char *str, char *dest)
  76 {
  77         int i = 0;
  78
  79         if (str == NULL) {
  80                 memset(dest, 0, 6);
  81                 return;
  82         }
  83
  84         for (;;) {
  85                 dest[i++] = (char) simple_strtoul(str, NULL, 16);
  86                 str += 2;
  87                 if (!*str++ || i == 6)
  88                         break;
  89         }
  90 }
  91
  92 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom)
  93 {
  94         char *s;
  95
  96         memset(sprom, 0xFF, sizeof(struct ssb_sprom));
  97
  98         sprom->revision = 1;
  99         if ((s = nvram_get("il0macaddr")))
 100                 e_aton(s, sprom->il0mac);
 101         if ((s = nvram_get("et0macaddr")))
 102                 e_aton(s, sprom->et0mac);
 103         if ((s = nvram_get("et1macaddr")))
 104                 e_aton(s, sprom->et1mac);
 105         if ((s = nvram_get("et0phyaddr")))
 106                 sprom->et0phyaddr = simple_strtoul(s, NULL, 0);
 107         if ((s = nvram_get("et1phyaddr")))
 108                 sprom->et1phyaddr = simple_strtoul(s, NULL, 0);
 109         if ((s = nvram_get("et0mdcport")))
 110                 sprom->et0mdcport = !!simple_strtoul(s, NULL, 10);
 111         if ((s = nvram_get("et1mdcport")))
 112                 sprom->et1mdcport = !!simple_strtoul(s, NULL, 10);
 113         if ((s = nvram_get("pa0b0")))
 114                 sprom->pa0b0 = simple_strtoul(s, NULL, 0);
 115         if ((s = nvram_get("pa0b1")))
 116                 sprom->pa0b1 = simple_strtoul(s, NULL, 0);
 117         if ((s = nvram_get("pa0b2")))
 118                 sprom->pa0b2 = simple_strtoul(s, NULL, 0);
 119         if ((s = nvram_get("pa1b0")))
 120                 sprom->pa1b0 = simple_strtoul(s, NULL, 0);
 121         if ((s = nvram_get("pa1b1")))
 122                 sprom->pa1b1 = simple_strtoul(s, NULL, 0);
 123         if ((s = nvram_get("pa1b2")))
 124                 sprom->pa1b2 = simple_strtoul(s, NULL, 0);
 125         if ((s = nvram_get("wl0gpio0")))
 126                 sprom->gpio0 = simple_strtoul(s, NULL, 0);
 127         if ((s = nvram_get("wl0gpio1")))
 128                 sprom->gpio1 = simple_strtoul(s, NULL, 0);
 129         if ((s = nvram_get("wl0gpio2")))
 130                 sprom->gpio2 = simple_strtoul(s, NULL, 0);
 131         if ((s = nvram_get("wl0gpio3")))
 132                 sprom->gpio3 = simple_strtoul(s, NULL, 0);
 133         if ((s = nvram_get("pa0maxpwr")))
 134                 sprom->maxpwr_bg = simple_strtoul(s, NULL, 0);
 135         if ((s = nvram_get("pa1maxpwr")))
 136                 sprom->maxpwr_a = simple_strtoul(s, NULL, 0);
 137         if ((s = nvram_get("pa0itssit")))
 138                 sprom->itssi_bg = simple_strtoul(s, NULL, 0);
 139         if ((s = nvram_get("pa1itssit")))
 140                 sprom->itssi_a = simple_strtoul(s, NULL, 0);
 141         sprom->boardflags_lo = 0;
 142         if ((s = nvram_get("boardflags")))
 143                 sprom->boardflags_lo = simple_strtoul(s, NULL, 0);
 144         sprom->boardflags_hi = 0;
 145         if ((s = nvram_get("boardflags2")))
 146                 sprom->boardflags_hi = simple_strtoul(s, NULL, 0);
 147 }
 148
 149 static int bcm47xx_get_invariants(struct ssb_bus *bus, struct ssb_init_invariants *iv)
 150 {
 151         char *s;
 152
 153         iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
 154         if ((s = nvram_get("boardtype")))
 155                 iv->boardinfo.type = (u16)simple_strtoul(s, NULL, 0);
 156         if ((s = nvram_get("boardrev")))
 157                 iv->boardinfo.rev = (u16)simple_strtoul(s, NULL, 0);
 158
 159         bcm47xx_fill_sprom(&iv->sprom);
 160
 161         return 0;
 162 }
 163
 164 void __init plat_mem_setup(void)
 165 {
 166         int i, err;
 167         char *s;
 168         struct ssb_mipscore *mcore;
 169
 170         err = ssb_bus_ssbbus_register(&ssb, SSB_ENUM_BASE, bcm47xx_get_invariants);
 171         if (err) {
 172                 const char *msg = "Failed to initialize SSB bus (err %d)\n";
 173                 cfe_printk(msg, err); /* Make sure the message gets out of the box. */
 174                 panic(msg, err);
 175         }
 176         mcore = &ssb.mipscore;
 177
 178         s = nvram_get("kernel_args");
 179         if (s && !strncmp(s, "console=ttyS1", 13)) {
 180                 struct ssb_serial_port port;
 181
 182                 cfe_printk("Swapping serial ports!\n");
 183                 /* swap serial ports */
 184                 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 185                 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], sizeof(port));
 186                 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 187         }
 188
 189         for (i = 0; i < mcore->nr_serial_ports; i++) {
 190                 struct ssb_serial_port *port = &(mcore->serial_ports[i]);
 191                 struct uart_port s;
 192
 193                 memset(&s, 0, sizeof(s));
 194                 s.line = i;
 195                 s.membase = port->regs;
 196                 s.irq = port->irq + 2;
 197                 s.uartclk = port->baud_base;
 198                 s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
 199                 s.iotype = SERIAL_IO_MEM;
 200                 s.regshift = port->reg_shift;
 201
 202                 early_serial_setup(&s);
 203         }
 204         cfe_printk("Serial init done.\n");
 205
 206         _machine_restart = bcm47xx_machine_restart;
 207         _machine_halt = bcm47xx_machine_halt;
 208         pm_power_off = bcm47xx_machine_halt;
 209         board_time_init = bcm47xx_time_init;
 210 }
 211
 212 EXPORT_SYMBOL(ssb);