/* Query for input device type */
enum prom_input_device
prom_query_input_device()
{
int st_p;
char propb[64];
st_p = prom_inst2pkg(prom_stdin);
if(prom_node_has_property(st_p, "keyboard"))
return PROMDEV_IKBD;
prom_getproperty(st_p, "device_type", propb, sizeof(propb));
if(strncmp(propb, "serial", 6))
return PROMDEV_I_UNK;
/* FIXME: Is there any better way how to find out? */
memset(propb, 0, sizeof(propb));
st_p = prom_finddevice ("/options");
prom_getproperty(st_p, "input-device", propb, sizeof(propb));
/*
* If we get here with propb == 'keyboard', we are on ttya, as
* the PROM defaulted to this due to 'no input device'.
*/
if (!strncmp(propb, "keyboard", 8))
return PROMDEV_ITTYA;
if (strncmp (propb, "tty", 3) || !propb[3])
return PROMDEV_I_UNK;
switch (propb[3]) {
case 'a': return PROMDEV_ITTYA;
case 'b': return PROMDEV_ITTYB;
default: return PROMDEV_I_UNK;
}
}
enum prom_output_device
prom_query_output_device()
{
int st_p;
char propb[64];
int propl;
st_p = prom_inst2pkg(prom_stdout);
propl = prom_getproperty(st_p, "device_type", propb, sizeof(propb));
if (propl >= 0 && propl == sizeof("display") &&
strncmp("display", propb, sizeof("display")) == 0)
return PROMDEV_OSCREEN;
if(strncmp("serial", propb, 6))
return PROMDEV_O_UNK;
/* FIXME: Is there any better way how to find out? */
memset(propb, 0, sizeof(propb));
st_p = prom_finddevice ("/options");
prom_getproperty(st_p, "output-device", propb, sizeof(propb));
/*
* If we get here with propb == 'screen', we are on ttya, as
* the PROM defaulted to this due to 'no input device'.
*/
if (!strncmp(propb, "screen", 6))
return PROMDEV_OTTYA;
if (strncmp (propb, "tty", 3) || !propb[3])
return PROMDEV_O_UNK;
switch (propb[3]) {
case 'a': return PROMDEV_OTTYA;
case 'b': return PROMDEV_OTTYB;
default: return PROMDEV_O_UNK;
}
}
/* Return 'node' assigned to a particular prom 'path'
* FIXME: Should work for v0 as well
*/
int prom_pathtoinode(char *path)
{
int node, inst;
inst = prom_devopen (path);
if (inst == -1) return 0;
node = prom_inst2pkg (inst);
prom_devclose (inst);
if (node == -1) return 0;
return node;
}
/* Return 'node' assigned to a particular prom 'path'
* FIXME: Should work for v0 as well
*/
phandle prom_pathtoinode(const char *path)
{
phandle node;
int inst;
inst = prom_devopen (path);
if (inst == 0)
return 0;
node = prom_inst2pkg(inst);
prom_devclose(inst);
if (node == -1)
return 0;
return node;
}
