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