1*a4d88df4Sjsg /* $OpenBSD: efiboot.c,v 1.6 2017/03/11 09:09:14 jsg Exp $ */ 2f24071e5Spatrick 3f24071e5Spatrick /* 4f24071e5Spatrick * Copyright (c) 2015 YASUOKA Masahiko <yasuoka@yasuoka.net> 5f24071e5Spatrick * Copyright (c) 2016 Mark Kettenis 6f24071e5Spatrick * 7f24071e5Spatrick * Permission to use, copy, modify, and distribute this software for any 8f24071e5Spatrick * purpose with or without fee is hereby granted, provided that the above 9f24071e5Spatrick * copyright notice and this permission notice appear in all copies. 10f24071e5Spatrick * 11f24071e5Spatrick * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12f24071e5Spatrick * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13f24071e5Spatrick * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14f24071e5Spatrick * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15f24071e5Spatrick * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16f24071e5Spatrick * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17f24071e5Spatrick * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18f24071e5Spatrick */ 19f24071e5Spatrick 20f24071e5Spatrick #include <sys/param.h> 21f24071e5Spatrick #include <sys/queue.h> 22f24071e5Spatrick #include <dev/cons.h> 23f24071e5Spatrick #include <sys/disklabel.h> 24f24071e5Spatrick 25f24071e5Spatrick #include <efi.h> 26f24071e5Spatrick #include <efiapi.h> 27f24071e5Spatrick #include <efiprot.h> 28f24071e5Spatrick #include <eficonsctl.h> 29f24071e5Spatrick 30f24071e5Spatrick #include <lib/libkern/libkern.h> 31f24071e5Spatrick #include <stand/boot/cmd.h> 32f24071e5Spatrick 33f24071e5Spatrick #include "disk.h" 34f24071e5Spatrick #include "eficall.h" 35f24071e5Spatrick #include "fdt.h" 36f24071e5Spatrick #include "libsa.h" 37f24071e5Spatrick 38f24071e5Spatrick EFI_SYSTEM_TABLE *ST; 39f24071e5Spatrick EFI_BOOT_SERVICES *BS; 40f24071e5Spatrick EFI_RUNTIME_SERVICES *RS; 41fa854029Spatrick EFI_HANDLE IH, efi_bootdp = NULL; 42f24071e5Spatrick 43fa854029Spatrick EFI_PHYSICAL_ADDRESS heap; 44fa854029Spatrick UINTN heapsiz = 1 * 1024 * 1024; 45fa854029Spatrick EFI_MEMORY_DESCRIPTOR *mmap = NULL; 46fa854029Spatrick UINTN mmap_key; 47fa854029Spatrick UINTN mmap_ndesc; 48fa854029Spatrick UINTN mmap_descsiz; 49f24071e5Spatrick 50f24071e5Spatrick static EFI_GUID imgp_guid = LOADED_IMAGE_PROTOCOL; 51f24071e5Spatrick static EFI_GUID blkio_guid = BLOCK_IO_PROTOCOL; 52f24071e5Spatrick static EFI_GUID devp_guid = DEVICE_PATH_PROTOCOL; 53f24071e5Spatrick 54fa854029Spatrick static void efi_heap_init(void); 55fa854029Spatrick static void efi_memprobe_internal(void); 56f24071e5Spatrick static void efi_timer_init(void); 57f24071e5Spatrick static void efi_timer_cleanup(void); 58f24071e5Spatrick static EFI_STATUS efi_memprobe_find(UINTN, UINTN, EFI_PHYSICAL_ADDRESS *); 59f24071e5Spatrick 60f24071e5Spatrick EFI_STATUS 61f24071e5Spatrick efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab) 62f24071e5Spatrick { 63f24071e5Spatrick extern char *progname; 64f24071e5Spatrick EFI_LOADED_IMAGE *imgp; 65f24071e5Spatrick EFI_DEVICE_PATH *dp = NULL; 66f24071e5Spatrick EFI_STATUS status; 67f24071e5Spatrick 68f24071e5Spatrick ST = systab; 69f24071e5Spatrick BS = ST->BootServices; 70f24071e5Spatrick IH = image; 71f24071e5Spatrick 72f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, image, &imgp_guid, 73f24071e5Spatrick (void **)&imgp); 74f24071e5Spatrick if (status == EFI_SUCCESS) 75f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, imgp->DeviceHandle, 76f24071e5Spatrick &devp_guid, (void **)&dp); 77f24071e5Spatrick if (status == EFI_SUCCESS) 78f24071e5Spatrick efi_bootdp = dp; 79f24071e5Spatrick 80f24071e5Spatrick progname = "BOOTAA64"; 81f24071e5Spatrick 82f24071e5Spatrick boot(0); 83f24071e5Spatrick 84f24071e5Spatrick return (EFI_SUCCESS); 85f24071e5Spatrick } 86f24071e5Spatrick 87f24071e5Spatrick static SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 88f24071e5Spatrick static SIMPLE_INPUT_INTERFACE *conin; 89f24071e5Spatrick 90f24071e5Spatrick void 91f24071e5Spatrick efi_cons_probe(struct consdev *cn) 92f24071e5Spatrick { 93f24071e5Spatrick cn->cn_pri = CN_MIDPRI; 94f24071e5Spatrick cn->cn_dev = makedev(12, 0); 95f24071e5Spatrick } 96f24071e5Spatrick 97f24071e5Spatrick void 98f24071e5Spatrick efi_cons_init(struct consdev *cp) 99f24071e5Spatrick { 100f24071e5Spatrick conin = ST->ConIn; 101f24071e5Spatrick conout = ST->ConOut; 102f24071e5Spatrick } 103f24071e5Spatrick 104f24071e5Spatrick int 105f24071e5Spatrick efi_cons_getc(dev_t dev) 106f24071e5Spatrick { 107f24071e5Spatrick EFI_INPUT_KEY key; 108f24071e5Spatrick EFI_STATUS status; 109f24071e5Spatrick #if 0 110f24071e5Spatrick UINTN dummy; 111f24071e5Spatrick #endif 112f24071e5Spatrick static int lastchar = 0; 113f24071e5Spatrick 114f24071e5Spatrick if (lastchar) { 115f24071e5Spatrick int r = lastchar; 116f24071e5Spatrick if ((dev & 0x80) == 0) 117f24071e5Spatrick lastchar = 0; 118f24071e5Spatrick return (r); 119f24071e5Spatrick } 120f24071e5Spatrick 121f24071e5Spatrick status = conin->ReadKeyStroke(conin, &key); 122f24071e5Spatrick while (status == EFI_NOT_READY) { 123f24071e5Spatrick if (dev & 0x80) 124f24071e5Spatrick return (0); 125f24071e5Spatrick /* 126f24071e5Spatrick * XXX The implementation of WaitForEvent() in U-boot 127f24071e5Spatrick * is broken and neverreturns. 128f24071e5Spatrick */ 129f24071e5Spatrick #if 0 130f24071e5Spatrick BS->WaitForEvent(1, &conin->WaitForKey, &dummy); 131f24071e5Spatrick #endif 132f24071e5Spatrick status = conin->ReadKeyStroke(conin, &key); 133f24071e5Spatrick } 134f24071e5Spatrick 135f24071e5Spatrick if (dev & 0x80) 136f24071e5Spatrick lastchar = key.UnicodeChar; 137f24071e5Spatrick 138f24071e5Spatrick return (key.UnicodeChar); 139f24071e5Spatrick } 140f24071e5Spatrick 141f24071e5Spatrick void 142f24071e5Spatrick efi_cons_putc(dev_t dev, int c) 143f24071e5Spatrick { 144f24071e5Spatrick CHAR16 buf[2]; 145f24071e5Spatrick 146f24071e5Spatrick if (c == '\n') 147f24071e5Spatrick efi_cons_putc(dev, '\r'); 148f24071e5Spatrick 149f24071e5Spatrick buf[0] = c; 150f24071e5Spatrick buf[1] = 0; 151f24071e5Spatrick 152f24071e5Spatrick conout->OutputString(conout, buf); 153f24071e5Spatrick } 154f24071e5Spatrick 155f24071e5Spatrick static void 156f24071e5Spatrick efi_heap_init(void) 157f24071e5Spatrick { 158f24071e5Spatrick EFI_STATUS status; 159f24071e5Spatrick 160f24071e5Spatrick status = EFI_CALL(BS->AllocatePages, AllocateAnyPages, EfiLoaderData, 161f24071e5Spatrick EFI_SIZE_TO_PAGES(heapsiz), &heap); 162f24071e5Spatrick if (status != EFI_SUCCESS) 163f24071e5Spatrick panic("BS->AllocatePages()"); 164f24071e5Spatrick } 165f24071e5Spatrick 166f24071e5Spatrick EFI_BLOCK_IO *disk; 167f24071e5Spatrick 168f24071e5Spatrick void 169f24071e5Spatrick efi_diskprobe(void) 170f24071e5Spatrick { 171f24071e5Spatrick int i, bootdev; 172f24071e5Spatrick UINTN sz; 173f24071e5Spatrick EFI_STATUS status; 174f24071e5Spatrick EFI_HANDLE *handles = NULL; 175f24071e5Spatrick EFI_BLOCK_IO *blkio; 176f24071e5Spatrick EFI_BLOCK_IO_MEDIA *media; 177f24071e5Spatrick EFI_DEVICE_PATH *dp, *bp; 178f24071e5Spatrick 179f24071e5Spatrick sz = 0; 180f24071e5Spatrick status = EFI_CALL(BS->LocateHandle, ByProtocol, &blkio_guid, 0, &sz, 0); 181f24071e5Spatrick if (status == EFI_BUFFER_TOO_SMALL) { 182f24071e5Spatrick handles = alloc(sz); 183f24071e5Spatrick status = EFI_CALL(BS->LocateHandle, ByProtocol, &blkio_guid, 184f24071e5Spatrick 0, &sz, handles); 185f24071e5Spatrick } 186f24071e5Spatrick if (handles == NULL || EFI_ERROR(status)) 187f24071e5Spatrick panic("BS->LocateHandle() returns %d", status); 188f24071e5Spatrick 189f24071e5Spatrick for (i = 0; i < sz / sizeof(EFI_HANDLE); i++) { 190f24071e5Spatrick bootdev = 0; 191f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, handles[i], &blkio_guid, 192f24071e5Spatrick (void **)&blkio); 193f24071e5Spatrick if (EFI_ERROR(status)) 194f24071e5Spatrick panic("BS->HandleProtocol() returns %d", status); 195f24071e5Spatrick 196f24071e5Spatrick media = blkio->Media; 197f24071e5Spatrick if (media->LogicalPartition || !media->MediaPresent) 198f24071e5Spatrick continue; 199f24071e5Spatrick 200f24071e5Spatrick if (efi_bootdp == NULL) 201f24071e5Spatrick goto next; 202f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, handles[i], &devp_guid, 203f24071e5Spatrick (void **)&dp); 204f24071e5Spatrick if (EFI_ERROR(status)) 205f24071e5Spatrick goto next; 206f24071e5Spatrick bp = efi_bootdp; 207f24071e5Spatrick while (1) { 208f24071e5Spatrick if (IsDevicePathEnd(dp)) { 209f24071e5Spatrick bootdev = 1; 210f24071e5Spatrick break; 211f24071e5Spatrick } 212f24071e5Spatrick if (memcmp(dp, bp, sizeof(EFI_DEVICE_PATH)) != 0 || 213f24071e5Spatrick memcmp(dp, bp, DevicePathNodeLength(dp)) != 0) 214f24071e5Spatrick break; 215f24071e5Spatrick dp = NextDevicePathNode(dp); 216f24071e5Spatrick bp = NextDevicePathNode(bp); 217f24071e5Spatrick } 218f24071e5Spatrick next: 219f24071e5Spatrick if (bootdev) { 220f24071e5Spatrick disk = blkio; 221f24071e5Spatrick break; 222f24071e5Spatrick } 223f24071e5Spatrick } 224f24071e5Spatrick 225f24071e5Spatrick free(handles, sz); 226f24071e5Spatrick } 227f24071e5Spatrick 228f24071e5Spatrick static EFI_GUID fdt_guid = FDT_TABLE_GUID; 229f24071e5Spatrick 230f24071e5Spatrick #define efi_guidcmp(_a, _b) memcmp((_a), (_b), sizeof(EFI_GUID)) 231f24071e5Spatrick 232f24071e5Spatrick void * 233f24071e5Spatrick efi_makebootargs(char *bootargs) 234f24071e5Spatrick { 235f24071e5Spatrick void *fdt = NULL; 236f24071e5Spatrick char bootduid[8]; 237f24071e5Spatrick u_char zero[8]; 238f24071e5Spatrick void *node; 239f24071e5Spatrick size_t len; 240f24071e5Spatrick int i; 241f24071e5Spatrick 242f24071e5Spatrick for (i = 0; i < ST->NumberOfTableEntries; i++) { 243f24071e5Spatrick if (efi_guidcmp(&fdt_guid, 244f24071e5Spatrick &ST->ConfigurationTable[i].VendorGuid) == 0) 245f24071e5Spatrick fdt = ST->ConfigurationTable[i].VendorTable; 246f24071e5Spatrick } 247f24071e5Spatrick 248f24071e5Spatrick if (!fdt_init(fdt)) 249f24071e5Spatrick return NULL; 250f24071e5Spatrick 251f24071e5Spatrick node = fdt_find_node("/chosen"); 252f24071e5Spatrick if (!node) 253f24071e5Spatrick return NULL; 254f24071e5Spatrick 255f24071e5Spatrick len = strlen(bootargs) + 1; 256f24071e5Spatrick fdt_node_add_property(node, "bootargs", bootargs, len); 257f24071e5Spatrick 258f24071e5Spatrick /* Pass DUID of the boot disk. */ 259f24071e5Spatrick memset(&zero, 0, sizeof(zero)); 260f24071e5Spatrick memcpy(&bootduid, diskinfo.disklabel.d_uid, sizeof(bootduid)); 261f24071e5Spatrick if (memcmp(bootduid, zero, sizeof(bootduid)) != 0) { 262f24071e5Spatrick fdt_node_add_property(node, "openbsd,bootduid", bootduid, 263f24071e5Spatrick sizeof(bootduid)); 264f24071e5Spatrick } 265f24071e5Spatrick 266f24071e5Spatrick fdt_finalize(); 267f24071e5Spatrick 268f24071e5Spatrick return fdt; 269f24071e5Spatrick } 270f24071e5Spatrick 271f24071e5Spatrick u_long efi_loadaddr; 272f24071e5Spatrick 273f24071e5Spatrick void 274f24071e5Spatrick machdep(void) 275f24071e5Spatrick { 276f24071e5Spatrick EFI_PHYSICAL_ADDRESS addr; 277f24071e5Spatrick 278f24071e5Spatrick cninit(); 279f24071e5Spatrick efi_heap_init(); 280f24071e5Spatrick 281f24071e5Spatrick /* 2829a118d7eSpatrick * The kernel expects to be loaded into a block of memory aligned 2839a118d7eSpatrick * on a 2MB boundary. We allocate a block of 64MB of memory, which 2849a118d7eSpatrick * gives us plenty of room for growth. 285f24071e5Spatrick */ 2869a118d7eSpatrick if (efi_memprobe_find(EFI_SIZE_TO_PAGES(64 * 1024 * 1024), 2879a118d7eSpatrick 0x200000, &addr) != EFI_SUCCESS) 288f24071e5Spatrick printf("Can't allocate memory\n"); 289f24071e5Spatrick efi_loadaddr = addr; 290f24071e5Spatrick 291f24071e5Spatrick efi_timer_init(); 292f24071e5Spatrick efi_diskprobe(); 293f24071e5Spatrick } 294f24071e5Spatrick 295f24071e5Spatrick void 296f24071e5Spatrick efi_cleanup(void) 297f24071e5Spatrick { 298fa854029Spatrick int retry; 299fa854029Spatrick EFI_STATUS status; 300fa854029Spatrick 301f24071e5Spatrick efi_timer_cleanup(); 302f24071e5Spatrick 303fa854029Spatrick /* retry once in case of failure */ 304fa854029Spatrick for (retry = 1; retry >= 0; retry--) { 305fa854029Spatrick efi_memprobe_internal(); /* sync the current map */ 306fa854029Spatrick status = EFI_CALL(BS->ExitBootServices, IH, mmap_key); 307fa854029Spatrick if (status == EFI_SUCCESS) 308fa854029Spatrick break; 309fa854029Spatrick if (retry == 0) 310fa854029Spatrick panic("ExitBootServices failed (%d)", status); 311fa854029Spatrick } 312f24071e5Spatrick } 313f24071e5Spatrick 314f24071e5Spatrick void 315f24071e5Spatrick _rtt(void) 316f24071e5Spatrick { 317f24071e5Spatrick #ifdef EFI_DEBUG 318f24071e5Spatrick printf("Hit any key to reboot\n"); 319f24071e5Spatrick efi_cons_getc(0); 320f24071e5Spatrick #endif 321f24071e5Spatrick /* 322f24071e5Spatrick * XXX ResetSystem doesn't seem to work on U-Boot 2016.05 on 323f24071e5Spatrick * the CuBox-i. So trigger an unimplemented instruction trap 324f24071e5Spatrick * instead. 325f24071e5Spatrick */ 326f24071e5Spatrick #if 1 327f24071e5Spatrick asm volatile(".word 0xa000f7f0\n"); 328f24071e5Spatrick #else 329f24071e5Spatrick RS->ResetSystem(EfiResetCold, EFI_SUCCESS, 0, NULL); 330f24071e5Spatrick #endif 331f24071e5Spatrick while (1) { } 332f24071e5Spatrick } 333f24071e5Spatrick 334f24071e5Spatrick /* 335f24071e5Spatrick * U-Boot only implements the GetTime() Runtime Service if it has been 336f24071e5Spatrick * configured with CONFIG_DM_RTC. Most board configurations don't 337f24071e5Spatrick * include that option, so we can't use it to implement our boot 338f24071e5Spatrick * prompt timeout. Instead we use timer events to simulate a clock 339f24071e5Spatrick * that ticks ever second. 340f24071e5Spatrick */ 341f24071e5Spatrick 342f24071e5Spatrick EFI_EVENT timer; 343f24071e5Spatrick int ticks; 344f24071e5Spatrick 345f24071e5Spatrick static VOID 346f24071e5Spatrick efi_timer(EFI_EVENT event, VOID *context) 347f24071e5Spatrick { 348f24071e5Spatrick ticks++; 349f24071e5Spatrick } 350f24071e5Spatrick 351f24071e5Spatrick static void 352f24071e5Spatrick efi_timer_init(void) 353f24071e5Spatrick { 354f24071e5Spatrick EFI_STATUS status; 355f24071e5Spatrick 356*a4d88df4Sjsg status = BS->CreateEvent(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, 357f24071e5Spatrick efi_timer, NULL, &timer); 358f24071e5Spatrick if (status == EFI_SUCCESS) 359f24071e5Spatrick status = BS->SetTimer(timer, TimerPeriodic, 10000000); 360f24071e5Spatrick if (EFI_ERROR(status)) 361f24071e5Spatrick printf("Can't create timer\n"); 362f24071e5Spatrick } 363f24071e5Spatrick 364f24071e5Spatrick static void 365f24071e5Spatrick efi_timer_cleanup(void) 366f24071e5Spatrick { 367f24071e5Spatrick BS->CloseEvent(timer); 368f24071e5Spatrick } 369f24071e5Spatrick 370f24071e5Spatrick time_t 371f24071e5Spatrick getsecs(void) 372f24071e5Spatrick { 373f24071e5Spatrick return ticks; 374f24071e5Spatrick } 375f24071e5Spatrick 376f24071e5Spatrick /* 377f24071e5Spatrick * Various device-related bits. 378f24071e5Spatrick */ 379f24071e5Spatrick 380f24071e5Spatrick void 381f24071e5Spatrick devboot(dev_t dev, char *p) 382f24071e5Spatrick { 383f24071e5Spatrick strlcpy(p, "sd0a", 5); 384f24071e5Spatrick } 385f24071e5Spatrick 386f24071e5Spatrick int 387f24071e5Spatrick cnspeed(dev_t dev, int sp) 388f24071e5Spatrick { 389f24071e5Spatrick return 115200; 390f24071e5Spatrick } 391f24071e5Spatrick 392f24071e5Spatrick char * 393f24071e5Spatrick ttyname(int fd) 394f24071e5Spatrick { 395f24071e5Spatrick return "com0"; 396f24071e5Spatrick } 397f24071e5Spatrick 398f24071e5Spatrick dev_t 399f24071e5Spatrick ttydev(char *name) 400f24071e5Spatrick { 401f24071e5Spatrick return NODEV; 402f24071e5Spatrick } 403f24071e5Spatrick 404f24071e5Spatrick #define MAXDEVNAME 16 405f24071e5Spatrick 406f24071e5Spatrick /* 407f24071e5Spatrick * Parse a device spec. 408f24071e5Spatrick * 409f24071e5Spatrick * [A-Za-z]*[0-9]*[A-Za-z]:file 410f24071e5Spatrick * dev uint part 411f24071e5Spatrick */ 412f24071e5Spatrick int 413f24071e5Spatrick devparse(const char *fname, int *dev, int *unit, int *part, const char **file) 414f24071e5Spatrick { 415f24071e5Spatrick const char *s; 416f24071e5Spatrick 417f24071e5Spatrick *unit = 0; /* default to wd0a */ 418f24071e5Spatrick *part = 0; 419f24071e5Spatrick *dev = 0; 420f24071e5Spatrick 421f24071e5Spatrick s = strchr(fname, ':'); 422f24071e5Spatrick if (s != NULL) { 423f24071e5Spatrick int devlen; 424f24071e5Spatrick int i, u, p = 0; 425f24071e5Spatrick struct devsw *dp; 426f24071e5Spatrick char devname[MAXDEVNAME]; 427f24071e5Spatrick 428f24071e5Spatrick devlen = s - fname; 429f24071e5Spatrick if (devlen > MAXDEVNAME) 430f24071e5Spatrick return (EINVAL); 431f24071e5Spatrick 432f24071e5Spatrick /* extract device name */ 433f24071e5Spatrick for (i = 0; isalpha(fname[i]) && (i < devlen); i++) 434f24071e5Spatrick devname[i] = fname[i]; 435f24071e5Spatrick devname[i] = 0; 436f24071e5Spatrick 437f24071e5Spatrick if (!isdigit(fname[i])) 438f24071e5Spatrick return (EUNIT); 439f24071e5Spatrick 440f24071e5Spatrick /* device number */ 441f24071e5Spatrick for (u = 0; isdigit(fname[i]) && (i < devlen); i++) 442f24071e5Spatrick u = u * 10 + (fname[i] - '0'); 443f24071e5Spatrick 444f24071e5Spatrick if (!isalpha(fname[i])) 445f24071e5Spatrick return (EPART); 446f24071e5Spatrick 447f24071e5Spatrick /* partition number */ 448f24071e5Spatrick if (i < devlen) 449f24071e5Spatrick p = fname[i++] - 'a'; 450f24071e5Spatrick 451f24071e5Spatrick if (i != devlen) 452f24071e5Spatrick return (ENXIO); 453f24071e5Spatrick 454f24071e5Spatrick /* check device name */ 455f24071e5Spatrick for (dp = devsw, i = 0; i < ndevs; dp++, i++) { 456f24071e5Spatrick if (dp->dv_name && !strcmp(devname, dp->dv_name)) 457f24071e5Spatrick break; 458f24071e5Spatrick } 459f24071e5Spatrick 460f24071e5Spatrick if (i >= ndevs) 461f24071e5Spatrick return (ENXIO); 462f24071e5Spatrick 463f24071e5Spatrick *unit = u; 464f24071e5Spatrick *part = p; 465f24071e5Spatrick *dev = i; 466f24071e5Spatrick fname = ++s; 467f24071e5Spatrick } 468f24071e5Spatrick 469f24071e5Spatrick *file = fname; 470f24071e5Spatrick 471f24071e5Spatrick return (0); 472f24071e5Spatrick } 473f24071e5Spatrick 474f24071e5Spatrick int 475f24071e5Spatrick devopen(struct open_file *f, const char *fname, char **file) 476f24071e5Spatrick { 477f24071e5Spatrick struct devsw *dp; 478f24071e5Spatrick int dev, unit, part, error; 479f24071e5Spatrick 480f24071e5Spatrick error = devparse(fname, &dev, &unit, &part, (const char **)file); 481f24071e5Spatrick if (error) 482f24071e5Spatrick return (error); 483f24071e5Spatrick 484f24071e5Spatrick dp = &devsw[0]; 485f24071e5Spatrick f->f_dev = dp; 486f24071e5Spatrick 487f24071e5Spatrick return (*dp->dv_open)(f, unit, part); 488f24071e5Spatrick } 489f24071e5Spatrick 490fa854029Spatrick static void 491fa854029Spatrick efi_memprobe_internal(void) 492fa854029Spatrick { 493fa854029Spatrick EFI_STATUS status; 494fa854029Spatrick UINTN mapkey, mmsiz, siz; 495fa854029Spatrick UINT32 mmver; 496fa854029Spatrick EFI_MEMORY_DESCRIPTOR *mm; 497fa854029Spatrick int n; 498fa854029Spatrick 499fa854029Spatrick free(mmap, mmap_ndesc * mmap_descsiz); 500fa854029Spatrick 501fa854029Spatrick siz = 0; 502fa854029Spatrick status = EFI_CALL(BS->GetMemoryMap, &siz, NULL, &mapkey, &mmsiz, 503fa854029Spatrick &mmver); 504fa854029Spatrick if (status != EFI_BUFFER_TOO_SMALL) 505fa854029Spatrick panic("cannot get the size of memory map"); 506fa854029Spatrick mm = alloc(siz); 507fa854029Spatrick status = EFI_CALL(BS->GetMemoryMap, &siz, mm, &mapkey, &mmsiz, &mmver); 508fa854029Spatrick if (status != EFI_SUCCESS) 509fa854029Spatrick panic("cannot get the memory map"); 510fa854029Spatrick n = siz / mmsiz; 511fa854029Spatrick mmap = mm; 512fa854029Spatrick mmap_key = mapkey; 513fa854029Spatrick mmap_ndesc = n; 514fa854029Spatrick mmap_descsiz = mmsiz; 515fa854029Spatrick } 516fa854029Spatrick 517f24071e5Spatrick /* 518f24071e5Spatrick * 64-bit ARMs can have a much wider memory mapping, as in somewhere 519f24071e5Spatrick * after the 32-bit region. To cope with our alignment requirement, 520f24071e5Spatrick * use the memory table to find a place where we can fit. 521f24071e5Spatrick */ 522f24071e5Spatrick static EFI_STATUS 523f24071e5Spatrick efi_memprobe_find(UINTN pages, UINTN align, EFI_PHYSICAL_ADDRESS *addr) 524f24071e5Spatrick { 525fa854029Spatrick EFI_MEMORY_DESCRIPTOR *mm; 526fa854029Spatrick int i, j; 527f24071e5Spatrick 528f24071e5Spatrick if (align < EFI_PAGE_SIZE) 529f24071e5Spatrick return EFI_INVALID_PARAMETER; 530f24071e5Spatrick 531fa854029Spatrick efi_memprobe_internal(); /* sync the current map */ 532f24071e5Spatrick 533fa854029Spatrick for (i = 0, mm = mmap; i < mmap_ndesc; 534fa854029Spatrick i++, mm = NextMemoryDescriptor(mm, mmap_descsiz)) { 535f24071e5Spatrick if (mm->Type != EfiConventionalMemory) 536f24071e5Spatrick continue; 537f24071e5Spatrick 538f24071e5Spatrick if (mm->NumberOfPages < pages) 539f24071e5Spatrick continue; 540f24071e5Spatrick 541f2c0e408Skettenis for (j = 0; j < mm->NumberOfPages; j++) { 542f24071e5Spatrick EFI_PHYSICAL_ADDRESS paddr; 543f24071e5Spatrick 544f24071e5Spatrick if (mm->NumberOfPages - j < pages) 545f24071e5Spatrick break; 546f24071e5Spatrick 547f24071e5Spatrick paddr = mm->PhysicalStart + (j * EFI_PAGE_SIZE); 54873dc1409Spatrick if (paddr & (align - 1)) 54973dc1409Spatrick continue; 55073dc1409Spatrick 55173dc1409Spatrick if (EFI_CALL(BS->AllocatePages, AllocateAddress, 55273dc1409Spatrick EfiLoaderData, pages, &paddr) == EFI_SUCCESS) { 553f24071e5Spatrick *addr = paddr; 554f24071e5Spatrick return EFI_SUCCESS; 555f24071e5Spatrick } 556f24071e5Spatrick } 557f24071e5Spatrick } 558f24071e5Spatrick return EFI_OUT_OF_RESOURCES; 559f24071e5Spatrick } 560