target/linux/xburst/files-2.6.32/arch/mips/jz4740/setup.c

   1 /*
   2  * linux/arch/mips/jz4740/common/setup.c
   3  *
   4  * JZ4740 common setup routines.
   5  *
   6  * Copyright (C) 2006 Ingenic Semiconductor Inc.
   7  *
   8  *  This program is free software; you can distribute it and/or modify it
   9  *  under the terms of the GNU General Public License (Version 2) as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope it will be useful, but WITHOUT
  13  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  *  for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  20  *
  21  */
  22 #include <linux/init.h>
  23 #include <linux/string.h>
  24 #include <linux/kernel.h>
  25 #include <linux/io.h>
  26 #include <linux/ioport.h>
  27 #include <linux/tty.h>
  28 #include <linux/serial.h>
  29 #include <linux/serial_core.h>
  30 #include <linux/serial_8250.h>
  31
  32 #include <asm/cpu.h>
  33 #include <asm/bootinfo.h>
  34 #include <asm/irq.h>
  35 #include <asm/mipsregs.h>
  36 #include <asm/reboot.h>
  37 #include <asm/pgtable.h>
  38 #include <asm/time.h>
  39 #include <asm/mach-jz4740/jz4740.h>
  40 #include <asm/mach-jz4740/regs.h>
  41 #include <asm/mach-jz4740/clock.h>
  42 #include <asm/mach-jz4740/serial.h>
  43
  44 #include "clock.h"
  45
  46 extern char *__init prom_getcmdline(void);
  47 extern void jz_restart(char *);
  48 extern void jz_halt(void);
  49 extern void jz_power_off(void);
  50
  51 static void __init jz_serial_setup(void)
  52 {
  53 #ifdef CONFIG_SERIAL_8250
  54         struct uart_port s;
  55         REG8(UART0_FCR) |= UARTFCR_UUE; /* enable UART module */
  56         memset(&s, 0, sizeof(s));
  57         s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
  58         s.iotype = SERIAL_IO_MEM;
  59         s.regshift = 2;
  60         s.uartclk = jz4740_clock_bdata.ext_rate;
  61
  62         s.line = 0;
  63         s.membase = (u8 *)UART0_BASE;
  64         s.irq = JZ_IRQ_UART0;
  65         if (early_serial_setup(&s) != 0) {
  66                 printk(KERN_ERR "Serial ttyS0 setup failed!\n");
  67         }
  68
  69         s.line = 1;
  70         s.membase = (u8 *)UART1_BASE;
  71         s.irq = JZ_IRQ_UART1;
  72         if (early_serial_setup(&s) != 0) {
  73                 printk(KERN_ERR "Serial ttyS1 setup failed!\n");
  74         }
  75 #endif
  76 }
  77
  78 void __init plat_mem_setup(void)
  79 {
  80         char *argptr;
  81
  82         argptr = prom_getcmdline();
  83
  84         /* IO/MEM resources. Which will be the addtion value in `inX' and
  85          * `outX' macros defined in asm/io.h */
  86         set_io_port_base(0);
  87         ioport_resource.start   = 0x00000000;
  88         ioport_resource.end     = 0xffffffff;
  89         iomem_resource.start    = 0x00000000;
  90         iomem_resource.end      = 0xffffffff;
  91
  92         _machine_restart = jz_restart;
  93         _machine_halt = jz_halt;
  94         pm_power_off = jz_power_off;
  95         jz_serial_setup();
  96 }
  97