35,6 → 35,7 |
ofw_entry ofw; |
|
phandle ofw_chosen; |
ihandle ofw_stdin; |
ihandle ofw_stdout; |
|
void ofw_init(void) |
43,8 → 44,11 |
if (ofw_chosen == -1) |
ofw_done(); |
|
if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
ofw_stdin = 0; |
|
if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
ofw_stdout = 0; |
ofw_stdout = 0; |
} |
|
void ofw_done(void) |
84,6 → 88,25 |
(void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
} |
|
/** Read character from OFW's input. |
* |
* This call is non-blocking. |
* |
* @return 0 if no character was read, character read otherwise. |
*/ |
char ofw_getchar(void) |
{ |
char ch; |
|
if (ofw_stdin == 0) |
return 0; |
|
if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
return ch; |
else |
return 0; |
} |
|
phandle ofw_find_device(const char *name) |
{ |
return (phandle) ofw_call("finddevice", 1, 1, name); |