| 31,7 → 31,7 |
|---|
| #include "printf.h" |
| |
| #define MAX_OFW_ARGS 10 |
| #define STRING_SIZE 1024 |
| #define BUF_SIZE 1024 |
| |
| typedef unsigned int ofw_arg_t; |
| typedef unsigned int ihandle; |
| 53,12 → 53,14 |
|---|
| ofw_entry ofw; |
| |
| phandle ofw_chosen; |
| ihandle ofw_stdout; |
| phandle ofw_root; |
| ihandle ofw_mmu; |
| phandle ofw_memory; |
| phandle ofw_aliases; |
| ihandle ofw_mmu; |
| ihandle ofw_stdout; |
| |
| |
| static int ofw_call(const char *service, const int nargs, const int nret, ...) |
| static int ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...) |
| { |
| va_list list; |
| ofw_args_t args; |
| 68,7 → 70,7 |
|---|
| args.nargs = nargs; |
| args.nret = nret; |
| |
| va_start(list, nret); |
| va_start(list, rets); |
| for (i = 0; i < nargs; i++) |
| args.args[i] = va_arg(list, ofw_arg_t); |
| va_end(list); |
| 78,6 → 80,9 |
|---|
| |
| ofw(&args); |
| |
| for (i = 1; i < nret; i++) |
| rets[i - 1] = args.args[i + nargs]; |
| |
| return args.args[nargs]; |
| } |
| |
| 84,18 → 89,43 |
|---|
| |
| static phandle ofw_find_device(const char *name) |
| { |
| return ofw_call("finddevice", 1, 1, name); |
| return ofw_call("finddevice", 1, 1, NULL, name); |
| } |
| |
| |
| static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
| { |
| return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
| return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen); |
| } |
| |
| |
| static unsigned int ofw_get_address_cells(const phandle device) |
| { |
| unsigned int ret; |
| |
| if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0) |
| if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0) |
| ret = 1; |
| |
| return ret; |
| } |
| |
| |
| static unsigned int ofw_get_size_cells(const phandle device) |
| { |
| unsigned int ret; |
| |
| if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0) |
| if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0) |
| ret = 1; |
| |
| return ret; |
| } |
| |
| |
| static ihandle ofw_open(const char *name) |
| { |
| return ofw_call("open", 1, 1, name); |
| return ofw_call("open", 1, 1, NULL, name); |
| } |
| |
| |
| 105,20 → 135,31 |
|---|
| if (ofw_chosen == -1) |
| halt(); |
| |
| if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
| if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
| ofw_stdout = 0; |
| |
| ofw_aliases = ofw_find_device("/aliases"); |
| if (ofw_aliases == -1) { |
| puts("\nUnable to find /aliases device\n"); |
| ofw_root = ofw_find_device("/"); |
| if (ofw_root == -1) { |
| puts("\r\nError: Unable to find / device, halted.\r\n"); |
| halt(); |
| } |
| |
| ofw_mmu = ofw_open("/mmu"); |
| if (ofw_mmu == -1) { |
| puts("\nUnable to open /mmu node\n"); |
| if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu, sizeof(ofw_mmu)) <= 0) { |
| puts("\r\nError: Unable to get mmu property, halted.\r\n"); |
| halt(); |
| } |
| |
| ofw_memory = ofw_find_device("/memory"); |
| if (ofw_memory == -1) { |
| puts("\r\nError: Unable to find /memory device, halted.\r\n"); |
| halt(); |
| } |
| |
| ofw_aliases = ofw_find_device("/aliases"); |
| if (ofw_aliases == -1) { |
| puts("\r\nError: Unable to find /aliases device, halted.\r\n"); |
| halt(); |
| } |
| } |
| |
| |
| 127,42 → 168,51 |
|---|
| if (ofw_stdout == 0) |
| return; |
| |
| ofw_call("write", 3, 1, ofw_stdout, str, len); |
| ofw_call("write", 3, 1, NULL, ofw_stdout, str, len); |
| } |
| |
| |
| void *ofw_translate(const void *virt) |
| { |
| return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0); |
| ofw_arg_t result[3]; |
| |
| if (ofw_call("call-method", 4, 4, result, "translate", ofw_mmu, virt, 1) != 0) { |
| puts("Error: MMU method translate() failed, halting.\n"); |
| halt(); |
| } |
| return (void *) result[2]; |
| } |
| |
| |
| int ofw_map(const void *phys, const void *virt, const int size, const int mode) |
| { |
| return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys); |
| return ofw_call("call-method", 6, 1, NULL, "map", ofw_mmu, mode, size, virt, phys); |
| } |
| |
| |
| int ofw_memmap(memmap_t *map) |
| { |
| int i; |
| int ret; |
| |
| phandle handle = ofw_find_device("/memory"); |
| if (handle == -1) |
| unsigned int buf[BUF_SIZE]; |
| int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(unsigned int) * BUF_SIZE); |
| if (ret <= 0) |
| return false; |
| |
| unsigned int ac = ofw_get_address_cells(ofw_memory); |
| unsigned int sc = ofw_get_size_cells(ofw_memory); |
| |
| ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones)); |
| if (ret == -1) |
| return false; |
| |
| int pos; |
| map->total = 0; |
| map->count = 0; |
| for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
| if (map->zones[i].size == 0) |
| break; |
| map->count++; |
| map->total += map->zones[i].size; |
| for (pos = 0; (pos < ret / sizeof(unsigned int)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) { |
| void * start = (void *) buf[pos + ac - 1]; |
| unsigned int size = buf[pos + ac + sc - 1]; |
| |
| if (size > 0) { |
| map->zones[map->count].start = start; |
| map->zones[map->count].size = size; |
| map->count++; |
| map->total += size; |
| } |
| } |
| } |
| |
| 169,9 → 219,9 |
|---|
| |
| int ofw_screen(screen_t *screen) |
| { |
| char device_name[STRING_SIZE]; |
| char device_name[BUF_SIZE]; |
| |
| if (ofw_get_property(ofw_aliases, "screen", device_name, STRING_SIZE) <= 0) |
| if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(char) * BUF_SIZE) <= 0) |
| return false; |
| |
| phandle device = ofw_find_device(device_name); |