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(&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(&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         // TODO
  92 }
  93
  94 static void bcm47xx_fill_sprom_nvram(struct ssb_sprom *sprom)
  95 {
  96         char *s;
  97
  98         memset(sprom, 0, sizeof(struct ssb_sprom));
  99
 100         sprom->revision = 3;
 101         if ((s = nvram_get("et0macaddr")))
 102                 e_aton(s, sprom->r1.et0mac);
 103         if ((s = nvram_get("et1macaddr")))
 104                 e_aton(s, sprom->r1.et1mac);
 105         if ((s = nvram_get("et0phyaddr")))
 106                 sprom->r1.et0phyaddr = simple_strtoul(s, NULL, 10);
 107         if ((s = nvram_get("et1phyaddr")))
 108                 sprom->r1.et1phyaddr = simple_strtoul(s, NULL, 10);
 109 }
 110
 111 static int bcm47xx_get_invariants(struct ssb_bus *bus, struct ssb_init_invariants *iv)
 112 {
 113         char *s;
 114
 115         // TODO
 116         //iv->boardinfo.vendor =
 117         if ((s = nvram_get("boardtype")))
 118                 iv->boardinfo.type = (u16)simple_strtoul(s, NULL, 0);
 119         if ((s = nvram_get("boardrev")))
 120                 iv->boardinfo.rev = (u16)simple_strtoul(s, NULL, 0);
 121         bcm47xx_fill_sprom(&iv->sprom);
 122         return 0;
 123 }
 124
 125 void __init plat_mem_setup(void)
 126 {
 127         int i, err;
 128         char *s;
 129         struct ssb_mipscore *mcore;
 130
 131         err = ssb_bus_ssbbus_register(&ssb, SSB_ENUM_BASE, bcm47xx_get_invariants);
 132         if (err) {
 133                 const char *msg = "Failed to initialize SSB bus (err %d)\n";
 134                 cfe_printk(msg, err); /* Make sure the message gets out of the box. */
 135                 panic(msg, err);
 136         }
 137         mcore = &ssb.mipscore;
 138
 139         /* FIXME: the nvram init depends on the ssb being fully initializes,
 140          * can't use the fill_sprom callback yet! */
 141         bcm47xx_fill_sprom_nvram(&ssb.sprom);
 142
 143         s = nvram_get("kernel_args");
 144         if (s && !strncmp(s, "console=ttyS1", 13)) {
 145                 struct ssb_serial_port port;
 146
 147                 cfe_printk("Swapping serial ports!\n");
 148                 /* swap serial ports */
 149                 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 150                 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], sizeof(port));
 151                 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 152         }
 153
 154         for (i = 0; i < mcore->nr_serial_ports; i++) {
 155                 struct ssb_serial_port *port = &(mcore->serial_ports[i]);
 156                 struct uart_port s;
 157
 158                 memset(&s, 0, sizeof(s));
 159                 s.line = i;
 160                 s.membase = port->regs;
 161                 s.irq = port->irq + 2;//FIXME?
 162                 s.uartclk = port->baud_base;
 163                 s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
 164                 s.iotype = SERIAL_IO_MEM;
 165                 s.regshift = port->reg_shift;
 166
 167                 early_serial_setup(&s);
 168         }
 169         cfe_printk("Serial init done.\n");
 170
 171         _machine_restart = bcm47xx_machine_restart;
 172         _machine_halt = bcm47xx_machine_halt;
 173         pm_power_off = bcm47xx_machine_halt;
 174
 175         board_time_init = bcm47xx_time_init;//FIXME move into ssb
 176 }
 177
 178 EXPORT_SYMBOL(ssb);