target/linux/amazon-2.6/files/arch/mips/amazon/prom.c

   1 /*
   2  * copyright 2007 john crispin <blogic@openwrt.org>
   3  */
   4 #include <linux/init.h>
   5 #include <linux/string.h>
   6 #include <linux/ctype.h>
   7 #include <linux/kernel.h>
   8 #include <linux/mm.h>
   9 #include <linux/bootmem.h>
  10 #include <linux/ioport.h>
  11 #include <asm/bootinfo.h>
  12 #include <asm/amazon/amazon.h>
  13 #include <asm/amazon/irq.h>
  14 #include <asm/amazon/model.h>
  15 #include <asm/cpu.h>
  16
  17 void prom_putchar(char c)
  18 {
  19         /* Wait for FIFO to empty */
  20         while (((*AMAZON_ASC_FSTAT) >> 8) != 0x00) ;
  21         /* Crude cr/nl handling is better than none */
  22         if(c == '\n')
  23                 *AMAZON_ASC_TBUF=('\r');
  24         *AMAZON_ASC_TBUF=(c);
  25 }
  26
  27 void prom_printf(const char * fmt, ...)
  28 {
  29         va_list args;
  30         int l;
  31         char *p, *buf_end;
  32         char buf[1024];
  33
  34         va_start(args, fmt);
  35         l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */
  36         va_end(args);
  37         buf_end = buf + l;
  38
  39         for (p = buf; p < buf_end; p++)
  40                 prom_putchar(*p);
  41 }
  42
  43
  44 void __init prom_init(void)
  45 {
  46         mips_machgroup = MACH_GROUP_INFINEON;
  47         mips_machtype = MACH_INFINEON_AMAZON;
  48
  49         strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2 init=/etc/preinit");
  50
  51         add_memory_region(0x00000000, 0x1000000, BOOT_MEM_RAM);
  52 }
  53
  54 void prom_free_prom_memory(void)
  55 {
  56 }
  57
  58 const char *get_system_type(void)
  59 {
  60         return BOARD_SYSTEM_TYPE;
  61 }