utils/ofclient/of1275_io.c

   1 #include "of1275.h"
   2
   3 static int of_write_initialized = 0;
   4 static int stdout_ihandle = 0;
   5 static int of_read_initialized = 0;
   6 static int stdin_ihandle = 0;
   7
   8 int write(int fd, char *buf, int len)
   9 {
  10         int actual;
  11
  12         if (fd != 1 && fd != 2) {
  13                 // printk("write: bad id %x\n", fd);
  14                 exit(1);
  15         }
  16
  17         if (!of_write_initialized) {
  18                 stdout_ihandle =
  19                     of_find_integer_property("/chosen", "stdout");
  20                 // printk("stdout_ihandle: %x\n",stdout_ihandle);
  21                 of_write_initialized = 1;
  22         }
  23
  24         of1275_write(stdout_ihandle, buf, len, &actual);
  25         return actual;
  26 }
  27
  28 int read(int fd, char *buf, int len)
  29 {
  30         int actual;
  31
  32         if (fd != 0) {
  33                 // printk("write: bad id %x\n", fd);
  34                 exit(1);
  35         }
  36
  37         if (!of_read_initialized) {
  38                 stdin_ihandle =
  39                     of_find_integer_property("/chosen", "stdin");
  40                 of_read_initialized = 1;
  41         }
  42
  43         of1275_read(stdin_ihandle, buf, len, &actual);
  44         return actual;
  45 }
  46
  47 exit(int status)
  48 {
  49         of1275_exit(status);
  50         while (1);
  51 }