2 * Copyright (c) 2004 Olivier Houchard
3 * Copyright (c) 1994-1998 Mark Brinicombe.
4 * Copyright (c) 1994 Brini.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include "opt_platform.h"
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/ctype.h>
38 #include <sys/linker.h>
39 #include <sys/reboot.h>
40 #include <sys/sysctl.h>
41 #if defined(LINUX_BOOT_ABI)
45 #include <machine/atags.h>
46 #include <machine/cpu.h>
47 #include <machine/machdep.h>
48 #include <machine/metadata.h>
49 #include <machine/physmem.h>
50 #include <machine/vmparam.h> /* For KERNVIRTADDR */
53 #include <contrib/libfdt/libfdt.h>
54 #include <dev/fdt/fdt_common.h>
66 #define debugf(fmt, args...) printf(fmt, ##args)
68 #define debugf(fmt, args...)
72 static char static_kenv[4096];
77 static uint32_t board_revision;
78 /* hex representation of uint64_t */
79 static char board_serial[32];
80 static char *loader_envp;
82 #if defined(LINUX_BOOT_ABI)
83 #define LBABI_MAX_BANKS 10
84 #define CMDLINE_GUARD "FreeBSD:"
85 static uint32_t board_id;
86 static struct arm_lbabi_tag *atag_list;
87 static char linux_command_line[LBABI_MAX_COMMAND_LINE + 1];
88 static char atags[LBABI_MAX_COMMAND_LINE * 2];
89 #endif /* defined(LINUX_BOOT_ABI) */
91 SYSCTL_NODE(_hw, OID_AUTO, board, CTLFLAG_RD, 0, "Board attributes");
92 SYSCTL_UINT(_hw_board, OID_AUTO, revision, CTLFLAG_RD,
93 &board_revision, 0, "Board revision");
94 SYSCTL_STRING(_hw_board, OID_AUTO, serial, CTLFLAG_RD,
95 board_serial, 0, "Board serial");
98 SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD,
99 &vfp_exists, 0, "Floating point support enabled");
102 board_set_serial(uint64_t serial)
105 snprintf(board_serial, sizeof(board_serial)-1,
110 board_set_revision(uint32_t revision)
113 board_revision = revision;
135 debugf("loader passed (static) kenv:\n");
136 if (loader_envp == NULL) {
137 debugf(" no env, null ptr\n");
140 debugf(" loader_envp = 0x%08x\n", (uint32_t)loader_envp);
142 for (cp = loader_envp; cp != NULL; cp = kenv_next(cp))
143 debugf(" %x %s\n", (uint32_t)cp, cp);
147 #if defined(LINUX_BOOT_ABI)
149 /* Convert the U-Boot command line into FreeBSD kenv and boot options. */
151 cmdline_set_env(char *cmdline, const char *guard)
155 /* Skip leading spaces. */
156 while (isspace(*cmdline))
159 /* Test and remove guard. */
160 if (guard != NULL && guard[0] != '\0') {
161 guard_len = strlen(guard);
162 if (strncasecmp(cmdline, guard, guard_len) != 0)
164 cmdline += guard_len;
167 boothowto |= boot_parse_cmdline(cmdline);
171 * Called for armv6 and newer.
173 void arm_parse_fdt_bootargs(void)
177 if (loader_envp == NULL && fdt_get_chosen_bootargs(linux_command_line,
178 LBABI_MAX_COMMAND_LINE) == 0) {
179 init_static_kenv(static_kenv, sizeof(static_kenv));
180 cmdline_set_env(linux_command_line, CMDLINE_GUARD);
186 * Called for armv[45].
189 linux_parse_boot_param(struct arm_boot_params *abp)
191 struct arm_lbabi_tag *walker;
195 vm_offset_t lastaddr;
197 struct fdt_header *dtb_ptr;
202 * Linux boot ABI: r0 = 0, r1 is the board type (!= 0) and r2
203 * is atags or dtb pointer. If all of these aren't satisfied,
204 * then punt. Unfortunately, it looks like DT enabled kernels
205 * doesn't uses board type and U-Boot delivers 0 in r1 for them.
207 if (abp->abp_r0 != 0 || abp->abp_r2 == 0)
210 /* Test if r2 point to valid DTB. */
211 dtb_ptr = (struct fdt_header *)abp->abp_r2;
212 if (fdt_check_header(dtb_ptr) == 0) {
213 dtb_size = fdt_totalsize(dtb_ptr);
214 return (fake_preload_metadata(abp, dtb_ptr, dtb_size));
218 board_id = abp->abp_r1;
219 walker = (struct arm_lbabi_tag *)abp->abp_r2;
221 if (ATAG_TAG(walker) != ATAG_CORE)
225 while (ATAG_TAG(walker) != ATAG_NONE) {
226 switch (ATAG_TAG(walker)) {
230 arm_physmem_hardware_region(walker->u.tag_mem.start,
231 walker->u.tag_mem.size);
236 serial = walker->u.tag_sn.high;
238 serial |= walker->u.tag_sn.low;
239 board_set_serial(serial);
242 revision = walker->u.tag_rev.rev;
243 board_set_revision(revision);
246 size = ATAG_SIZE(walker) -
247 sizeof(struct arm_lbabi_header);
248 size = min(size, LBABI_MAX_COMMAND_LINE);
249 strncpy(linux_command_line, walker->u.tag_cmd.command,
251 linux_command_line[size] = '\0';
256 walker = ATAG_NEXT(walker);
259 /* Save a copy for later */
260 bcopy(atag_list, atags,
261 (char *)walker - (char *)atag_list + ATAG_SIZE(walker));
263 lastaddr = fake_preload_metadata(abp, NULL, 0);
264 init_static_kenv(static_kenv, sizeof(static_kenv));
265 cmdline_set_env(linux_command_line, CMDLINE_GUARD);
270 #if defined(FREEBSD_BOOT_LOADER)
272 freebsd_parse_boot_param(struct arm_boot_params *abp)
274 vm_offset_t lastaddr = 0;
278 vm_offset_t ksym_start;
279 vm_offset_t ksym_end;
283 * Mask metadata pointer: it is supposed to be on page boundary. If
284 * the first argument (mdp) doesn't point to a valid address the
285 * bootloader must have passed us something else than the metadata
286 * ptr, so we give up. Also give up if we cannot find metadta section
287 * the loader creates that we get all this data out of.
290 if ((mdp = (void *)(abp->abp_r0 & ~PAGE_MASK)) == NULL)
292 preload_metadata = mdp;
293 kmdp = preload_search_by_type("elf kernel");
297 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
298 loader_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
299 init_static_kenv(loader_envp, 0);
300 lastaddr = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
302 ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
303 ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
304 db_fetch_ksymtab(ksym_start, ksym_end);
311 default_parse_boot_param(struct arm_boot_params *abp)
313 vm_offset_t lastaddr;
315 #if defined(LINUX_BOOT_ABI)
316 if ((lastaddr = linux_parse_boot_param(abp)) != 0)
319 #if defined(FREEBSD_BOOT_LOADER)
320 if ((lastaddr = freebsd_parse_boot_param(abp)) != 0)
323 /* Fall back to hardcoded metadata. */
324 lastaddr = fake_preload_metadata(abp, NULL, 0);
330 * Stub version of the boot parameter parsing routine. We are
331 * called early in initarm, before even VM has been initialized.
332 * This routine needs to preserve any data that the boot loader
333 * has passed in before the kernel starts to grow past the end
334 * of the BSS, traditionally the place boot-loaders put this data.
336 * Since this is called so early, things that depend on the vm system
337 * being setup (including access to some SoC's serial ports), about
338 * all that can be done in this routine is to copy the arguments.
340 * This is the default boot parameter parsing routine. Individual
341 * kernels/boards can override this weak function with one of their
342 * own. We just fake metadata...
344 __weak_reference(default_parse_boot_param, parse_boot_param);
348 * Fake up a boot descriptor table
351 fake_preload_metadata(struct arm_boot_params *abp __unused, void *dtb_ptr,
355 vm_offset_t zstart = 0, zend = 0;
357 vm_offset_t lastaddr;
359 static uint32_t fake_preload[35];
361 fake_preload[i++] = MODINFO_NAME;
362 fake_preload[i++] = strlen("kernel") + 1;
363 strcpy((char*)&fake_preload[i++], "kernel");
365 fake_preload[i++] = MODINFO_TYPE;
366 fake_preload[i++] = strlen("elf kernel") + 1;
367 strcpy((char*)&fake_preload[i++], "elf kernel");
369 fake_preload[i++] = MODINFO_ADDR;
370 fake_preload[i++] = sizeof(vm_offset_t);
371 fake_preload[i++] = KERNVIRTADDR;
372 fake_preload[i++] = MODINFO_SIZE;
373 fake_preload[i++] = sizeof(uint32_t);
374 fake_preload[i++] = (uint32_t)&end - KERNVIRTADDR;
376 if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) {
377 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM;
378 fake_preload[i++] = sizeof(vm_offset_t);
379 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4);
380 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM;
381 fake_preload[i++] = sizeof(vm_offset_t);
382 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8);
383 lastaddr = *(uint32_t *)(KERNVIRTADDR + 8);
385 zstart = *(uint32_t *)(KERNVIRTADDR + 4);
386 db_fetch_ksymtab(zstart, zend);
389 lastaddr = (vm_offset_t)&end;
390 if (dtb_ptr != NULL) {
391 /* Copy DTB to KVA space and insert it into module chain. */
392 lastaddr = roundup(lastaddr, sizeof(int));
393 fake_preload[i++] = MODINFO_METADATA | MODINFOMD_DTBP;
394 fake_preload[i++] = sizeof(uint32_t);
395 fake_preload[i++] = (uint32_t)lastaddr;
396 memmove((void *)lastaddr, dtb_ptr, dtb_size);
397 lastaddr += dtb_size;
398 lastaddr = roundup(lastaddr, sizeof(int));
400 fake_preload[i++] = 0;
402 preload_metadata = (void *)fake_preload;
404 init_static_kenv(NULL, 0);
411 arm_add_efi_map_entries(struct efi_map_header *efihdr, struct mem_region *mr,
414 struct efi_md *map, *p;
416 size_t efisz, memory_size;
419 static const char *types[] = {
425 "RuntimeServicesCode",
426 "RuntimeServicesData",
427 "ConventionalMemory",
432 "MemoryMappedIOPortSpace",
440 * Memory map data provided by UEFI via the GetMemoryMap
443 efisz = roundup2(sizeof(struct efi_map_header), 0x10);
444 map = (struct efi_md *)((uint8_t *)efihdr + efisz);
446 if (efihdr->descriptor_size == 0)
448 ndesc = efihdr->memory_size / efihdr->descriptor_size;
450 if (boothowto & RB_VERBOSE)
451 printf("%23s %12s %12s %8s %4s\n",
452 "Type", "Physical", "Virtual", "#Pages", "Attr");
455 for (i = 0, j = 0, p = map; i < ndesc; i++,
456 p = efi_next_descriptor(p, efihdr->descriptor_size)) {
457 if (boothowto & RB_VERBOSE) {
458 if (p->md_type < nitems(types))
459 type = types[p->md_type];
462 printf("%23s %012llx %12p %08llx ", type, p->md_phys,
463 p->md_virt, p->md_pages);
464 if (p->md_attr & EFI_MD_ATTR_UC)
466 if (p->md_attr & EFI_MD_ATTR_WC)
468 if (p->md_attr & EFI_MD_ATTR_WT)
470 if (p->md_attr & EFI_MD_ATTR_WB)
472 if (p->md_attr & EFI_MD_ATTR_UCE)
474 if (p->md_attr & EFI_MD_ATTR_WP)
476 if (p->md_attr & EFI_MD_ATTR_RP)
478 if (p->md_attr & EFI_MD_ATTR_XP)
480 if (p->md_attr & EFI_MD_ATTR_NV)
482 if (p->md_attr & EFI_MD_ATTR_MORE_RELIABLE)
483 printf("MORE_RELIABLE ");
484 if (p->md_attr & EFI_MD_ATTR_RO)
486 if (p->md_attr & EFI_MD_ATTR_RT)
491 switch (p->md_type) {
492 case EFI_MD_TYPE_CODE:
493 case EFI_MD_TYPE_DATA:
494 case EFI_MD_TYPE_BS_CODE:
495 case EFI_MD_TYPE_BS_DATA:
496 case EFI_MD_TYPE_FREE:
498 * We're allowed to use any entry with these types.
506 if (j >= FDT_MEM_REGIONS)
509 mr[j].mr_start = p->md_phys;
510 mr[j].mr_size = p->md_pages * PAGE_SIZE;
511 memory_size += mr[j].mr_size;