target/linux/brcm47xx-2.6/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 <asm/bootinfo.h>
  35 #include <asm/time.h>
  36 #include <asm/reboot.h>
  37 #include <asm/cfe.h>
  38 #include <linux/pm.h>
  39 #include <linux/ssb/ssb.h>
  40
  41 #include <nvram.h>
  42
  43 extern void bcm47xx_pci_init(void);
  44 extern void bcm47xx_time_init(void);
  45
  46 struct ssb_bus ssb;
  47
  48 static void bcm47xx_machine_restart(char *command)
  49 {
  50         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  51         local_irq_disable();
  52         /* CFE has a reboot callback, but that does not work.
  53          * Oopses with: Reserved instruction in kernel code.
  54          */
  55
  56         /* Set the watchdog timer to reset immediately */
  57         ssb_chipco_watchdog(&ssb.chipco, 1);
  58         while (1)
  59                 cpu_relax();
  60 }
  61
  62 static void bcm47xx_machine_halt(void)
  63 {
  64         /* Disable interrupts and watchdog and spin forever */
  65         local_irq_disable();
  66         ssb_chipco_watchdog(&ssb.chipco, 0);
  67         while (1)
  68                 cpu_relax();
  69 }
  70
  71 static void e_aton(char *str, char *dest)
  72 {
  73         int i = 0;
  74
  75         if (str == NULL) {
  76                 memset(dest, 0, 6);
  77                 return;
  78         }
  79
  80         for (;;) {
  81                 dest[i++] = (char) simple_strtoul(str, NULL, 16);
  82                 str += 2;
  83                 if (!*str++ || i == 6)
  84                         break;
  85         }
  86 }
  87
  88 static void bcm47xx_fill_sprom(struct ssb_sprom *sprom)
  89 {
  90         // TODO
  91 }
  92
  93 static void bcm47xx_fill_sprom_nvram(struct ssb_sprom *sprom)
  94 {
  95         char *s;
  96
  97         memset(sprom, 0, sizeof(struct ssb_sprom));
  98
  99         sprom->revision = 3;
 100         if ((s = nvram_get("et0macaddr")))
 101                 e_aton(s, sprom->r1.et0mac);
 102         if ((s = nvram_get("et1macaddr")))
 103                 e_aton(s, sprom->r1.et1mac);
 104         if ((s = nvram_get("et0phyaddr")))
 105                 sprom->r1.et0phyaddr = simple_strtoul(s, NULL, 10);
 106         if ((s = nvram_get("et1phyaddr")))
 107                 sprom->r1.et1phyaddr = simple_strtoul(s, NULL, 10);
 108 }
 109
 110 void __init plat_mem_setup(void)
 111 {
 112         int i, err;
 113         char *s;
 114         struct ssb_mipscore *mcore;
 115
 116         err = ssb_bus_ssbbus_register(&ssb, SSB_ENUM_BASE, bcm47xx_fill_sprom);
 117         if (err) {
 118                 const char *msg = "Failed to initialize SSB bus (err %d)\n";
 119                 cfe_printk(msg, err); /* Make sure the message gets out of the box. */
 120                 panic(msg, err);
 121         }
 122         mcore = &ssb.mipscore;
 123
 124         /* FIXME: the nvram init depends on the ssb being fully initializes,
 125          * can't use the fill_sprom callback yet! */
 126         bcm47xx_fill_sprom_nvram(&ssb.sprom);
 127
 128         s = nvram_get("kernel_args");
 129         if (s && !strncmp(s, "console=ttyS1", 13)) {
 130                 struct ssb_serial_port port;
 131
 132                 cfe_printk("Swapping serial ports!\n");
 133                 /* swap serial ports */
 134                 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 135                 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], sizeof(port));
 136                 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 137         }
 138
 139         for (i = 0; i < mcore->nr_serial_ports; i++) {
 140                 struct ssb_serial_port *port = &(mcore->serial_ports[i]);
 141                 struct uart_port s;
 142
 143                 memset(&s, 0, sizeof(s));
 144                 s.line = i;
 145                 s.membase = port->regs;
 146                 s.irq = port->irq + 2;//FIXME?
 147                 s.uartclk = port->baud_base;
 148                 s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
 149                 s.iotype = SERIAL_IO_MEM;
 150                 s.regshift = port->reg_shift;
 151
 152                 early_serial_setup(&s);
 153         }
 154         cfe_printk("Serial init done.\n");
 155
 156         _machine_restart = bcm47xx_machine_restart;
 157         _machine_halt = bcm47xx_machine_halt;
 158         pm_power_off = bcm47xx_machine_halt;
 159
 160         board_time_init = bcm47xx_time_init;//FIXME move into ssb
 161 }
 162
 163 EXPORT_SYMBOL(ssb);