1*f4dd1aebSkettenis /* $OpenBSD: efiboot.c,v 1.7 2017/05/07 11:07:48 kettenis 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; 49*f4dd1aebSkettenis UINT32 mmap_version; 50f24071e5Spatrick 51f24071e5Spatrick static EFI_GUID imgp_guid = LOADED_IMAGE_PROTOCOL; 52f24071e5Spatrick static EFI_GUID blkio_guid = BLOCK_IO_PROTOCOL; 53f24071e5Spatrick static EFI_GUID devp_guid = DEVICE_PATH_PROTOCOL; 54f24071e5Spatrick 55fa854029Spatrick static void efi_heap_init(void); 56fa854029Spatrick static void efi_memprobe_internal(void); 57f24071e5Spatrick static void efi_timer_init(void); 58f24071e5Spatrick static void efi_timer_cleanup(void); 59f24071e5Spatrick static EFI_STATUS efi_memprobe_find(UINTN, UINTN, EFI_PHYSICAL_ADDRESS *); 60f24071e5Spatrick 61f24071e5Spatrick EFI_STATUS 62f24071e5Spatrick efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab) 63f24071e5Spatrick { 64f24071e5Spatrick extern char *progname; 65f24071e5Spatrick EFI_LOADED_IMAGE *imgp; 66f24071e5Spatrick EFI_DEVICE_PATH *dp = NULL; 67f24071e5Spatrick EFI_STATUS status; 68f24071e5Spatrick 69f24071e5Spatrick ST = systab; 70f24071e5Spatrick BS = ST->BootServices; 71f24071e5Spatrick IH = image; 72f24071e5Spatrick 73f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, image, &imgp_guid, 74f24071e5Spatrick (void **)&imgp); 75f24071e5Spatrick if (status == EFI_SUCCESS) 76f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, imgp->DeviceHandle, 77f24071e5Spatrick &devp_guid, (void **)&dp); 78f24071e5Spatrick if (status == EFI_SUCCESS) 79f24071e5Spatrick efi_bootdp = dp; 80f24071e5Spatrick 81f24071e5Spatrick progname = "BOOTAA64"; 82f24071e5Spatrick 83f24071e5Spatrick boot(0); 84f24071e5Spatrick 85f24071e5Spatrick return (EFI_SUCCESS); 86f24071e5Spatrick } 87f24071e5Spatrick 88f24071e5Spatrick static SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 89f24071e5Spatrick static SIMPLE_INPUT_INTERFACE *conin; 90f24071e5Spatrick 91f24071e5Spatrick void 92f24071e5Spatrick efi_cons_probe(struct consdev *cn) 93f24071e5Spatrick { 94f24071e5Spatrick cn->cn_pri = CN_MIDPRI; 95f24071e5Spatrick cn->cn_dev = makedev(12, 0); 96f24071e5Spatrick } 97f24071e5Spatrick 98f24071e5Spatrick void 99f24071e5Spatrick efi_cons_init(struct consdev *cp) 100f24071e5Spatrick { 101f24071e5Spatrick conin = ST->ConIn; 102f24071e5Spatrick conout = ST->ConOut; 103f24071e5Spatrick } 104f24071e5Spatrick 105f24071e5Spatrick int 106f24071e5Spatrick efi_cons_getc(dev_t dev) 107f24071e5Spatrick { 108f24071e5Spatrick EFI_INPUT_KEY key; 109f24071e5Spatrick EFI_STATUS status; 110f24071e5Spatrick #if 0 111f24071e5Spatrick UINTN dummy; 112f24071e5Spatrick #endif 113f24071e5Spatrick static int lastchar = 0; 114f24071e5Spatrick 115f24071e5Spatrick if (lastchar) { 116f24071e5Spatrick int r = lastchar; 117f24071e5Spatrick if ((dev & 0x80) == 0) 118f24071e5Spatrick lastchar = 0; 119f24071e5Spatrick return (r); 120f24071e5Spatrick } 121f24071e5Spatrick 122f24071e5Spatrick status = conin->ReadKeyStroke(conin, &key); 123f24071e5Spatrick while (status == EFI_NOT_READY) { 124f24071e5Spatrick if (dev & 0x80) 125f24071e5Spatrick return (0); 126f24071e5Spatrick /* 127f24071e5Spatrick * XXX The implementation of WaitForEvent() in U-boot 128f24071e5Spatrick * is broken and neverreturns. 129f24071e5Spatrick */ 130f24071e5Spatrick #if 0 131f24071e5Spatrick BS->WaitForEvent(1, &conin->WaitForKey, &dummy); 132f24071e5Spatrick #endif 133f24071e5Spatrick status = conin->ReadKeyStroke(conin, &key); 134f24071e5Spatrick } 135f24071e5Spatrick 136f24071e5Spatrick if (dev & 0x80) 137f24071e5Spatrick lastchar = key.UnicodeChar; 138f24071e5Spatrick 139f24071e5Spatrick return (key.UnicodeChar); 140f24071e5Spatrick } 141f24071e5Spatrick 142f24071e5Spatrick void 143f24071e5Spatrick efi_cons_putc(dev_t dev, int c) 144f24071e5Spatrick { 145f24071e5Spatrick CHAR16 buf[2]; 146f24071e5Spatrick 147f24071e5Spatrick if (c == '\n') 148f24071e5Spatrick efi_cons_putc(dev, '\r'); 149f24071e5Spatrick 150f24071e5Spatrick buf[0] = c; 151f24071e5Spatrick buf[1] = 0; 152f24071e5Spatrick 153f24071e5Spatrick conout->OutputString(conout, buf); 154f24071e5Spatrick } 155f24071e5Spatrick 156f24071e5Spatrick static void 157f24071e5Spatrick efi_heap_init(void) 158f24071e5Spatrick { 159f24071e5Spatrick EFI_STATUS status; 160f24071e5Spatrick 161f24071e5Spatrick status = EFI_CALL(BS->AllocatePages, AllocateAnyPages, EfiLoaderData, 162f24071e5Spatrick EFI_SIZE_TO_PAGES(heapsiz), &heap); 163f24071e5Spatrick if (status != EFI_SUCCESS) 164f24071e5Spatrick panic("BS->AllocatePages()"); 165f24071e5Spatrick } 166f24071e5Spatrick 167f24071e5Spatrick EFI_BLOCK_IO *disk; 168f24071e5Spatrick 169f24071e5Spatrick void 170f24071e5Spatrick efi_diskprobe(void) 171f24071e5Spatrick { 172f24071e5Spatrick int i, bootdev; 173f24071e5Spatrick UINTN sz; 174f24071e5Spatrick EFI_STATUS status; 175f24071e5Spatrick EFI_HANDLE *handles = NULL; 176f24071e5Spatrick EFI_BLOCK_IO *blkio; 177f24071e5Spatrick EFI_BLOCK_IO_MEDIA *media; 178f24071e5Spatrick EFI_DEVICE_PATH *dp, *bp; 179f24071e5Spatrick 180f24071e5Spatrick sz = 0; 181f24071e5Spatrick status = EFI_CALL(BS->LocateHandle, ByProtocol, &blkio_guid, 0, &sz, 0); 182f24071e5Spatrick if (status == EFI_BUFFER_TOO_SMALL) { 183f24071e5Spatrick handles = alloc(sz); 184f24071e5Spatrick status = EFI_CALL(BS->LocateHandle, ByProtocol, &blkio_guid, 185f24071e5Spatrick 0, &sz, handles); 186f24071e5Spatrick } 187f24071e5Spatrick if (handles == NULL || EFI_ERROR(status)) 188f24071e5Spatrick panic("BS->LocateHandle() returns %d", status); 189f24071e5Spatrick 190f24071e5Spatrick for (i = 0; i < sz / sizeof(EFI_HANDLE); i++) { 191f24071e5Spatrick bootdev = 0; 192f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, handles[i], &blkio_guid, 193f24071e5Spatrick (void **)&blkio); 194f24071e5Spatrick if (EFI_ERROR(status)) 195f24071e5Spatrick panic("BS->HandleProtocol() returns %d", status); 196f24071e5Spatrick 197f24071e5Spatrick media = blkio->Media; 198f24071e5Spatrick if (media->LogicalPartition || !media->MediaPresent) 199f24071e5Spatrick continue; 200f24071e5Spatrick 201f24071e5Spatrick if (efi_bootdp == NULL) 202f24071e5Spatrick goto next; 203f24071e5Spatrick status = EFI_CALL(BS->HandleProtocol, handles[i], &devp_guid, 204f24071e5Spatrick (void **)&dp); 205f24071e5Spatrick if (EFI_ERROR(status)) 206f24071e5Spatrick goto next; 207f24071e5Spatrick bp = efi_bootdp; 208f24071e5Spatrick while (1) { 209f24071e5Spatrick if (IsDevicePathEnd(dp)) { 210f24071e5Spatrick bootdev = 1; 211f24071e5Spatrick break; 212f24071e5Spatrick } 213f24071e5Spatrick if (memcmp(dp, bp, sizeof(EFI_DEVICE_PATH)) != 0 || 214f24071e5Spatrick memcmp(dp, bp, DevicePathNodeLength(dp)) != 0) 215f24071e5Spatrick break; 216f24071e5Spatrick dp = NextDevicePathNode(dp); 217f24071e5Spatrick bp = NextDevicePathNode(bp); 218f24071e5Spatrick } 219f24071e5Spatrick next: 220f24071e5Spatrick if (bootdev) { 221f24071e5Spatrick disk = blkio; 222f24071e5Spatrick break; 223f24071e5Spatrick } 224f24071e5Spatrick } 225f24071e5Spatrick 226f24071e5Spatrick free(handles, sz); 227f24071e5Spatrick } 228f24071e5Spatrick 229f24071e5Spatrick static EFI_GUID fdt_guid = FDT_TABLE_GUID; 230f24071e5Spatrick 231f24071e5Spatrick #define efi_guidcmp(_a, _b) memcmp((_a), (_b), sizeof(EFI_GUID)) 232f24071e5Spatrick 233f24071e5Spatrick void * 234f24071e5Spatrick efi_makebootargs(char *bootargs) 235f24071e5Spatrick { 236f24071e5Spatrick void *fdt = NULL; 237*f4dd1aebSkettenis u_char bootduid[8]; 238*f4dd1aebSkettenis u_char zero[8] = { 0 }; 239*f4dd1aebSkettenis uint64_t uefi_system_table = htobe64((uintptr_t)ST); 240f24071e5Spatrick void *node; 241f24071e5Spatrick size_t len; 242f24071e5Spatrick int i; 243f24071e5Spatrick 244f24071e5Spatrick for (i = 0; i < ST->NumberOfTableEntries; i++) { 245f24071e5Spatrick if (efi_guidcmp(&fdt_guid, 246f24071e5Spatrick &ST->ConfigurationTable[i].VendorGuid) == 0) 247f24071e5Spatrick fdt = ST->ConfigurationTable[i].VendorTable; 248f24071e5Spatrick } 249f24071e5Spatrick 250f24071e5Spatrick if (!fdt_init(fdt)) 251f24071e5Spatrick return NULL; 252f24071e5Spatrick 253f24071e5Spatrick node = fdt_find_node("/chosen"); 254f24071e5Spatrick if (!node) 255f24071e5Spatrick return NULL; 256f24071e5Spatrick 257f24071e5Spatrick len = strlen(bootargs) + 1; 258f24071e5Spatrick fdt_node_add_property(node, "bootargs", bootargs, len); 259f24071e5Spatrick 260f24071e5Spatrick /* Pass DUID of the boot disk. */ 261f24071e5Spatrick memcpy(&bootduid, diskinfo.disklabel.d_uid, sizeof(bootduid)); 262f24071e5Spatrick if (memcmp(bootduid, zero, sizeof(bootduid)) != 0) { 263f24071e5Spatrick fdt_node_add_property(node, "openbsd,bootduid", bootduid, 264f24071e5Spatrick sizeof(bootduid)); 265f24071e5Spatrick } 266f24071e5Spatrick 267*f4dd1aebSkettenis /* Pass EFI system table. */ 268*f4dd1aebSkettenis fdt_node_add_property(node, "openbsd,uefi-system-table", 269*f4dd1aebSkettenis &uefi_system_table, sizeof(uefi_system_table)); 270*f4dd1aebSkettenis 271*f4dd1aebSkettenis /* Placeholders for EFI memory map. */ 272*f4dd1aebSkettenis fdt_node_add_property(node, "openbsd,uefi-mmap-start", zero, 8); 273*f4dd1aebSkettenis fdt_node_add_property(node, "openbsd,uefi-mmap-size", zero, 4); 274*f4dd1aebSkettenis fdt_node_add_property(node, "openbsd,uefi-mmap-desc-size", zero, 4); 275*f4dd1aebSkettenis fdt_node_add_property(node, "openbsd,uefi-mmap-desc-ver", zero, 4); 276*f4dd1aebSkettenis 277f24071e5Spatrick fdt_finalize(); 278f24071e5Spatrick 279f24071e5Spatrick return fdt; 280f24071e5Spatrick } 281f24071e5Spatrick 282*f4dd1aebSkettenis void 283*f4dd1aebSkettenis efi_updatefdt(void) 284*f4dd1aebSkettenis { 285*f4dd1aebSkettenis uint64_t uefi_mmap_start = htobe64((uintptr_t)mmap); 286*f4dd1aebSkettenis uint32_t uefi_mmap_size = htobe32(mmap_ndesc * mmap_descsiz); 287*f4dd1aebSkettenis uint32_t uefi_mmap_desc_size = htobe32(mmap_descsiz); 288*f4dd1aebSkettenis uint32_t uefi_mmap_desc_ver = htobe32(mmap_version); 289*f4dd1aebSkettenis void *node; 290*f4dd1aebSkettenis 291*f4dd1aebSkettenis node = fdt_find_node("/chosen"); 292*f4dd1aebSkettenis if (!node) 293*f4dd1aebSkettenis return; 294*f4dd1aebSkettenis 295*f4dd1aebSkettenis /* Pass EFI memory map. */ 296*f4dd1aebSkettenis fdt_node_set_property(node, "openbsd,uefi-mmap-start", 297*f4dd1aebSkettenis &uefi_mmap_start, sizeof(uefi_mmap_start)); 298*f4dd1aebSkettenis fdt_node_set_property(node, "openbsd,uefi-mmap-size", 299*f4dd1aebSkettenis &uefi_mmap_size, sizeof(uefi_mmap_size)); 300*f4dd1aebSkettenis fdt_node_set_property(node, "openbsd,uefi-mmap-desc-size", 301*f4dd1aebSkettenis &uefi_mmap_desc_size, sizeof(uefi_mmap_desc_size)); 302*f4dd1aebSkettenis fdt_node_set_property(node, "openbsd,uefi-mmap-desc-ver", 303*f4dd1aebSkettenis &uefi_mmap_desc_ver, sizeof(uefi_mmap_desc_ver)); 304*f4dd1aebSkettenis 305*f4dd1aebSkettenis fdt_finalize(); 306*f4dd1aebSkettenis } 307*f4dd1aebSkettenis 308f24071e5Spatrick u_long efi_loadaddr; 309f24071e5Spatrick 310f24071e5Spatrick void 311f24071e5Spatrick machdep(void) 312f24071e5Spatrick { 313f24071e5Spatrick EFI_PHYSICAL_ADDRESS addr; 314f24071e5Spatrick 315f24071e5Spatrick cninit(); 316f24071e5Spatrick efi_heap_init(); 317f24071e5Spatrick 318f24071e5Spatrick /* 3199a118d7eSpatrick * The kernel expects to be loaded into a block of memory aligned 3209a118d7eSpatrick * on a 2MB boundary. We allocate a block of 64MB of memory, which 3219a118d7eSpatrick * gives us plenty of room for growth. 322f24071e5Spatrick */ 3239a118d7eSpatrick if (efi_memprobe_find(EFI_SIZE_TO_PAGES(64 * 1024 * 1024), 3249a118d7eSpatrick 0x200000, &addr) != EFI_SUCCESS) 325f24071e5Spatrick printf("Can't allocate memory\n"); 326f24071e5Spatrick efi_loadaddr = addr; 327f24071e5Spatrick 328f24071e5Spatrick efi_timer_init(); 329f24071e5Spatrick efi_diskprobe(); 330f24071e5Spatrick } 331f24071e5Spatrick 332f24071e5Spatrick void 333f24071e5Spatrick efi_cleanup(void) 334f24071e5Spatrick { 335fa854029Spatrick int retry; 336fa854029Spatrick EFI_STATUS status; 337fa854029Spatrick 338f24071e5Spatrick efi_timer_cleanup(); 339f24071e5Spatrick 340fa854029Spatrick /* retry once in case of failure */ 341fa854029Spatrick for (retry = 1; retry >= 0; retry--) { 342fa854029Spatrick efi_memprobe_internal(); /* sync the current map */ 343*f4dd1aebSkettenis efi_updatefdt(); 344fa854029Spatrick status = EFI_CALL(BS->ExitBootServices, IH, mmap_key); 345fa854029Spatrick if (status == EFI_SUCCESS) 346fa854029Spatrick break; 347fa854029Spatrick if (retry == 0) 348fa854029Spatrick panic("ExitBootServices failed (%d)", status); 349fa854029Spatrick } 350f24071e5Spatrick } 351f24071e5Spatrick 352f24071e5Spatrick void 353f24071e5Spatrick _rtt(void) 354f24071e5Spatrick { 355f24071e5Spatrick #ifdef EFI_DEBUG 356f24071e5Spatrick printf("Hit any key to reboot\n"); 357f24071e5Spatrick efi_cons_getc(0); 358f24071e5Spatrick #endif 359f24071e5Spatrick /* 360f24071e5Spatrick * XXX ResetSystem doesn't seem to work on U-Boot 2016.05 on 361f24071e5Spatrick * the CuBox-i. So trigger an unimplemented instruction trap 362f24071e5Spatrick * instead. 363f24071e5Spatrick */ 364f24071e5Spatrick #if 1 365f24071e5Spatrick asm volatile(".word 0xa000f7f0\n"); 366f24071e5Spatrick #else 367f24071e5Spatrick RS->ResetSystem(EfiResetCold, EFI_SUCCESS, 0, NULL); 368f24071e5Spatrick #endif 369f24071e5Spatrick while (1) { } 370f24071e5Spatrick } 371f24071e5Spatrick 372f24071e5Spatrick /* 373f24071e5Spatrick * U-Boot only implements the GetTime() Runtime Service if it has been 374f24071e5Spatrick * configured with CONFIG_DM_RTC. Most board configurations don't 375f24071e5Spatrick * include that option, so we can't use it to implement our boot 376f24071e5Spatrick * prompt timeout. Instead we use timer events to simulate a clock 377f24071e5Spatrick * that ticks ever second. 378f24071e5Spatrick */ 379f24071e5Spatrick 380f24071e5Spatrick EFI_EVENT timer; 381f24071e5Spatrick int ticks; 382f24071e5Spatrick 383f24071e5Spatrick static VOID 384f24071e5Spatrick efi_timer(EFI_EVENT event, VOID *context) 385f24071e5Spatrick { 386f24071e5Spatrick ticks++; 387f24071e5Spatrick } 388f24071e5Spatrick 389f24071e5Spatrick static void 390f24071e5Spatrick efi_timer_init(void) 391f24071e5Spatrick { 392f24071e5Spatrick EFI_STATUS status; 393f24071e5Spatrick 394a4d88df4Sjsg status = BS->CreateEvent(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, 395f24071e5Spatrick efi_timer, NULL, &timer); 396f24071e5Spatrick if (status == EFI_SUCCESS) 397f24071e5Spatrick status = BS->SetTimer(timer, TimerPeriodic, 10000000); 398f24071e5Spatrick if (EFI_ERROR(status)) 399f24071e5Spatrick printf("Can't create timer\n"); 400f24071e5Spatrick } 401f24071e5Spatrick 402f24071e5Spatrick static void 403f24071e5Spatrick efi_timer_cleanup(void) 404f24071e5Spatrick { 405f24071e5Spatrick BS->CloseEvent(timer); 406f24071e5Spatrick } 407f24071e5Spatrick 408f24071e5Spatrick time_t 409f24071e5Spatrick getsecs(void) 410f24071e5Spatrick { 411f24071e5Spatrick return ticks; 412f24071e5Spatrick } 413f24071e5Spatrick 414f24071e5Spatrick /* 415f24071e5Spatrick * Various device-related bits. 416f24071e5Spatrick */ 417f24071e5Spatrick 418f24071e5Spatrick void 419f24071e5Spatrick devboot(dev_t dev, char *p) 420f24071e5Spatrick { 421f24071e5Spatrick strlcpy(p, "sd0a", 5); 422f24071e5Spatrick } 423f24071e5Spatrick 424f24071e5Spatrick int 425f24071e5Spatrick cnspeed(dev_t dev, int sp) 426f24071e5Spatrick { 427f24071e5Spatrick return 115200; 428f24071e5Spatrick } 429f24071e5Spatrick 430f24071e5Spatrick char * 431f24071e5Spatrick ttyname(int fd) 432f24071e5Spatrick { 433f24071e5Spatrick return "com0"; 434f24071e5Spatrick } 435f24071e5Spatrick 436f24071e5Spatrick dev_t 437f24071e5Spatrick ttydev(char *name) 438f24071e5Spatrick { 439f24071e5Spatrick return NODEV; 440f24071e5Spatrick } 441f24071e5Spatrick 442f24071e5Spatrick #define MAXDEVNAME 16 443f24071e5Spatrick 444f24071e5Spatrick /* 445f24071e5Spatrick * Parse a device spec. 446f24071e5Spatrick * 447f24071e5Spatrick * [A-Za-z]*[0-9]*[A-Za-z]:file 448f24071e5Spatrick * dev uint part 449f24071e5Spatrick */ 450f24071e5Spatrick int 451f24071e5Spatrick devparse(const char *fname, int *dev, int *unit, int *part, const char **file) 452f24071e5Spatrick { 453f24071e5Spatrick const char *s; 454f24071e5Spatrick 455f24071e5Spatrick *unit = 0; /* default to wd0a */ 456f24071e5Spatrick *part = 0; 457f24071e5Spatrick *dev = 0; 458f24071e5Spatrick 459f24071e5Spatrick s = strchr(fname, ':'); 460f24071e5Spatrick if (s != NULL) { 461f24071e5Spatrick int devlen; 462f24071e5Spatrick int i, u, p = 0; 463f24071e5Spatrick struct devsw *dp; 464f24071e5Spatrick char devname[MAXDEVNAME]; 465f24071e5Spatrick 466f24071e5Spatrick devlen = s - fname; 467f24071e5Spatrick if (devlen > MAXDEVNAME) 468f24071e5Spatrick return (EINVAL); 469f24071e5Spatrick 470f24071e5Spatrick /* extract device name */ 471f24071e5Spatrick for (i = 0; isalpha(fname[i]) && (i < devlen); i++) 472f24071e5Spatrick devname[i] = fname[i]; 473f24071e5Spatrick devname[i] = 0; 474f24071e5Spatrick 475f24071e5Spatrick if (!isdigit(fname[i])) 476f24071e5Spatrick return (EUNIT); 477f24071e5Spatrick 478f24071e5Spatrick /* device number */ 479f24071e5Spatrick for (u = 0; isdigit(fname[i]) && (i < devlen); i++) 480f24071e5Spatrick u = u * 10 + (fname[i] - '0'); 481f24071e5Spatrick 482f24071e5Spatrick if (!isalpha(fname[i])) 483f24071e5Spatrick return (EPART); 484f24071e5Spatrick 485f24071e5Spatrick /* partition number */ 486f24071e5Spatrick if (i < devlen) 487f24071e5Spatrick p = fname[i++] - 'a'; 488f24071e5Spatrick 489f24071e5Spatrick if (i != devlen) 490f24071e5Spatrick return (ENXIO); 491f24071e5Spatrick 492f24071e5Spatrick /* check device name */ 493f24071e5Spatrick for (dp = devsw, i = 0; i < ndevs; dp++, i++) { 494f24071e5Spatrick if (dp->dv_name && !strcmp(devname, dp->dv_name)) 495f24071e5Spatrick break; 496f24071e5Spatrick } 497f24071e5Spatrick 498f24071e5Spatrick if (i >= ndevs) 499f24071e5Spatrick return (ENXIO); 500f24071e5Spatrick 501f24071e5Spatrick *unit = u; 502f24071e5Spatrick *part = p; 503f24071e5Spatrick *dev = i; 504f24071e5Spatrick fname = ++s; 505f24071e5Spatrick } 506f24071e5Spatrick 507f24071e5Spatrick *file = fname; 508f24071e5Spatrick 509f24071e5Spatrick return (0); 510f24071e5Spatrick } 511f24071e5Spatrick 512f24071e5Spatrick int 513f24071e5Spatrick devopen(struct open_file *f, const char *fname, char **file) 514f24071e5Spatrick { 515f24071e5Spatrick struct devsw *dp; 516f24071e5Spatrick int dev, unit, part, error; 517f24071e5Spatrick 518f24071e5Spatrick error = devparse(fname, &dev, &unit, &part, (const char **)file); 519f24071e5Spatrick if (error) 520f24071e5Spatrick return (error); 521f24071e5Spatrick 522f24071e5Spatrick dp = &devsw[0]; 523f24071e5Spatrick f->f_dev = dp; 524f24071e5Spatrick 525f24071e5Spatrick return (*dp->dv_open)(f, unit, part); 526f24071e5Spatrick } 527f24071e5Spatrick 528fa854029Spatrick static void 529fa854029Spatrick efi_memprobe_internal(void) 530fa854029Spatrick { 531fa854029Spatrick EFI_STATUS status; 532fa854029Spatrick UINTN mapkey, mmsiz, siz; 533fa854029Spatrick UINT32 mmver; 534fa854029Spatrick EFI_MEMORY_DESCRIPTOR *mm; 535fa854029Spatrick int n; 536fa854029Spatrick 537fa854029Spatrick free(mmap, mmap_ndesc * mmap_descsiz); 538fa854029Spatrick 539fa854029Spatrick siz = 0; 540fa854029Spatrick status = EFI_CALL(BS->GetMemoryMap, &siz, NULL, &mapkey, &mmsiz, 541fa854029Spatrick &mmver); 542fa854029Spatrick if (status != EFI_BUFFER_TOO_SMALL) 543fa854029Spatrick panic("cannot get the size of memory map"); 544fa854029Spatrick mm = alloc(siz); 545fa854029Spatrick status = EFI_CALL(BS->GetMemoryMap, &siz, mm, &mapkey, &mmsiz, &mmver); 546fa854029Spatrick if (status != EFI_SUCCESS) 547fa854029Spatrick panic("cannot get the memory map"); 548fa854029Spatrick n = siz / mmsiz; 549fa854029Spatrick mmap = mm; 550fa854029Spatrick mmap_key = mapkey; 551fa854029Spatrick mmap_ndesc = n; 552fa854029Spatrick mmap_descsiz = mmsiz; 553*f4dd1aebSkettenis mmap_version = mmver; 554fa854029Spatrick } 555fa854029Spatrick 556f24071e5Spatrick /* 557f24071e5Spatrick * 64-bit ARMs can have a much wider memory mapping, as in somewhere 558f24071e5Spatrick * after the 32-bit region. To cope with our alignment requirement, 559f24071e5Spatrick * use the memory table to find a place where we can fit. 560f24071e5Spatrick */ 561f24071e5Spatrick static EFI_STATUS 562f24071e5Spatrick efi_memprobe_find(UINTN pages, UINTN align, EFI_PHYSICAL_ADDRESS *addr) 563f24071e5Spatrick { 564fa854029Spatrick EFI_MEMORY_DESCRIPTOR *mm; 565fa854029Spatrick int i, j; 566f24071e5Spatrick 567f24071e5Spatrick if (align < EFI_PAGE_SIZE) 568f24071e5Spatrick return EFI_INVALID_PARAMETER; 569f24071e5Spatrick 570fa854029Spatrick efi_memprobe_internal(); /* sync the current map */ 571f24071e5Spatrick 572fa854029Spatrick for (i = 0, mm = mmap; i < mmap_ndesc; 573fa854029Spatrick i++, mm = NextMemoryDescriptor(mm, mmap_descsiz)) { 574f24071e5Spatrick if (mm->Type != EfiConventionalMemory) 575f24071e5Spatrick continue; 576f24071e5Spatrick 577f24071e5Spatrick if (mm->NumberOfPages < pages) 578f24071e5Spatrick continue; 579f24071e5Spatrick 580f2c0e408Skettenis for (j = 0; j < mm->NumberOfPages; j++) { 581f24071e5Spatrick EFI_PHYSICAL_ADDRESS paddr; 582f24071e5Spatrick 583f24071e5Spatrick if (mm->NumberOfPages - j < pages) 584f24071e5Spatrick break; 585f24071e5Spatrick 586f24071e5Spatrick paddr = mm->PhysicalStart + (j * EFI_PAGE_SIZE); 58773dc1409Spatrick if (paddr & (align - 1)) 58873dc1409Spatrick continue; 58973dc1409Spatrick 59073dc1409Spatrick if (EFI_CALL(BS->AllocatePages, AllocateAddress, 59173dc1409Spatrick EfiLoaderData, pages, &paddr) == EFI_SUCCESS) { 592f24071e5Spatrick *addr = paddr; 593f24071e5Spatrick return EFI_SUCCESS; 594f24071e5Spatrick } 595f24071e5Spatrick } 596f24071e5Spatrick } 597f24071e5Spatrick return EFI_OUT_OF_RESOURCES; 598f24071e5Spatrick } 599