/* 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; }