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"
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/ctype.h>
37 #include <sys/linker.h>
38 #include <sys/reboot.h>
39 #include <sys/sysctl.h>
40 #if defined(LINUX_BOOT_ABI)
44 #include <machine/atags.h>
45 #include <machine/cpu.h>
46 #include <machine/machdep.h>
47 #include <machine/metadata.h>
48 #include <machine/physmem.h>
51 #include <contrib/libfdt/libfdt.h>
52 #include <dev/fdt/fdt_common.h>
60 #define debugf(fmt, args...) printf(fmt, ##args)
62 #define debugf(fmt, args...)
67 static uint32_t board_revision;
68 /* hex representation of uint64_t */
69 static char board_serial[32];
70 static char *loader_envp;
72 #if defined(LINUX_BOOT_ABI)
73 #define LBABI_MAX_BANKS 10
74 #define CMDLINE_GUARD "FreeBSD:"
75 static uint32_t board_id;
76 static struct arm_lbabi_tag *atag_list;
77 static char linux_command_line[LBABI_MAX_COMMAND_LINE + 1];
78 static char atags[LBABI_MAX_COMMAND_LINE * 2];
79 #endif /* defined(LINUX_BOOT_ABI) */
81 SYSCTL_NODE(_hw, OID_AUTO, board, CTLFLAG_RD, 0, "Board attributes");
82 SYSCTL_UINT(_hw_board, OID_AUTO, revision, CTLFLAG_RD,
83 &board_revision, 0, "Board revision");
84 SYSCTL_STRING(_hw_board, OID_AUTO, serial, CTLFLAG_RD,
85 board_serial, 0, "Board serial");
88 SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD,
89 &vfp_exists, 0, "Floating point support enabled");
92 board_set_serial(uint64_t serial)
95 snprintf(board_serial, sizeof(board_serial)-1,
100 board_set_revision(uint32_t revision)
103 board_revision = revision;
125 debugf("loader passed (static) kenv:\n");
126 if (loader_envp == NULL) {
127 debugf(" no env, null ptr\n");
130 debugf(" loader_envp = 0x%08x\n", (uint32_t)loader_envp);
132 for (cp = loader_envp; cp != NULL; cp = kenv_next(cp))
133 debugf(" %x %s\n", (uint32_t)cp, cp);
137 #if defined(LINUX_BOOT_ABI)
139 /* Convert the U-Boot command line into FreeBSD kenv and boot options. */
141 cmdline_set_env(char *cmdline, const char *guard)
143 char *cmdline_next, *env;
144 size_t size, guard_len;
147 size = strlen(cmdline);
148 /* Skip leading spaces. */
149 for (; isspace(*cmdline) && (size > 0); cmdline++)
152 /* Test and remove guard. */
153 if (guard != NULL && guard[0] != '\0') {
154 guard_len = strlen(guard);
155 if (strncasecmp(cmdline, guard, guard_len) != 0)
157 cmdline += guard_len;
161 /* Skip leading spaces. */
162 for (; isspace(*cmdline) && (size > 0); cmdline++)
165 /* Replace ',' with '\0'. */
166 /* TODO: implement escaping for ',' character. */
167 cmdline_next = cmdline;
168 while(strsep(&cmdline_next, ",") != NULL)
170 init_static_kenv(cmdline, 0);
171 /* Parse boothowto. */
172 for (i = 0; howto_names[i].ev != NULL; i++) {
173 env = kern_getenv(howto_names[i].ev);
175 if (strtoul(env, NULL, 10) != 0)
176 boothowto |= howto_names[i].mask;
182 void arm_parse_fdt_bootargs(void)
186 if (loader_envp == NULL && fdt_get_chosen_bootargs(linux_command_line,
187 LBABI_MAX_COMMAND_LINE) == 0)
188 cmdline_set_env(linux_command_line, CMDLINE_GUARD);
193 linux_parse_boot_param(struct arm_boot_params *abp)
195 struct arm_lbabi_tag *walker;
199 vm_offset_t lastaddr;
201 struct fdt_header *dtb_ptr;
206 * Linux boot ABI: r0 = 0, r1 is the board type (!= 0) and r2
207 * is atags or dtb pointer. If all of these aren't satisfied,
208 * then punt. Unfortunately, it looks like DT enabled kernels
209 * doesn't uses board type and U-Boot delivers 0 in r1 for them.
211 if (abp->abp_r0 != 0 || abp->abp_r2 == 0)
214 /* Test if r2 point to valid DTB. */
215 dtb_ptr = (struct fdt_header *)abp->abp_r2;
216 if (fdt_check_header(dtb_ptr) == 0) {
217 dtb_size = fdt_totalsize(dtb_ptr);
218 return (fake_preload_metadata(abp, dtb_ptr, dtb_size));
222 board_id = abp->abp_r1;
223 walker = (struct arm_lbabi_tag *)abp->abp_r2;
225 if (ATAG_TAG(walker) != ATAG_CORE)
229 while (ATAG_TAG(walker) != ATAG_NONE) {
230 switch (ATAG_TAG(walker)) {
234 arm_physmem_hardware_region(walker->u.tag_mem.start,
235 walker->u.tag_mem.size);
240 serial = walker->u.tag_sn.high;
242 serial |= walker->u.tag_sn.low;
243 board_set_serial(serial);
246 revision = walker->u.tag_rev.rev;
247 board_set_revision(revision);
250 size = ATAG_SIZE(walker) -
251 sizeof(struct arm_lbabi_header);
252 size = min(size, LBABI_MAX_COMMAND_LINE);
253 strncpy(linux_command_line, walker->u.tag_cmd.command,
255 linux_command_line[size] = '\0';
260 walker = ATAG_NEXT(walker);
263 /* Save a copy for later */
264 bcopy(atag_list, atags,
265 (char *)walker - (char *)atag_list + ATAG_SIZE(walker));
267 lastaddr = fake_preload_metadata(abp, NULL, 0);
268 cmdline_set_env(linux_command_line, CMDLINE_GUARD);
273 #if defined(FREEBSD_BOOT_LOADER)
275 freebsd_parse_boot_param(struct arm_boot_params *abp)
277 vm_offset_t lastaddr = 0;
281 vm_offset_t ksym_start;
282 vm_offset_t ksym_end;
286 * Mask metadata pointer: it is supposed to be on page boundary. If
287 * the first argument (mdp) doesn't point to a valid address the
288 * bootloader must have passed us something else than the metadata
289 * ptr, so we give up. Also give up if we cannot find metadta section
290 * the loader creates that we get all this data out of.
293 if ((mdp = (void *)(abp->abp_r0 & ~PAGE_MASK)) == NULL)
295 preload_metadata = mdp;
296 kmdp = preload_search_by_type("elf kernel");
300 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
301 loader_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
302 init_static_kenv(loader_envp, 0);
303 lastaddr = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
305 ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
306 ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
307 db_fetch_ksymtab(ksym_start, ksym_end);
314 default_parse_boot_param(struct arm_boot_params *abp)
316 vm_offset_t lastaddr;
318 #if defined(LINUX_BOOT_ABI)
319 if ((lastaddr = linux_parse_boot_param(abp)) != 0)
322 #if defined(FREEBSD_BOOT_LOADER)
323 if ((lastaddr = freebsd_parse_boot_param(abp)) != 0)
326 /* Fall back to hardcoded metadata. */
327 lastaddr = fake_preload_metadata(abp, NULL, 0);
333 * Stub version of the boot parameter parsing routine. We are
334 * called early in initarm, before even VM has been initialized.
335 * This routine needs to preserve any data that the boot loader
336 * has passed in before the kernel starts to grow past the end
337 * of the BSS, traditionally the place boot-loaders put this data.
339 * Since this is called so early, things that depend on the vm system
340 * being setup (including access to some SoC's serial ports), about
341 * all that can be done in this routine is to copy the arguments.
343 * This is the default boot parameter parsing routine. Individual
344 * kernels/boards can override this weak function with one of their
345 * own. We just fake metadata...
347 __weak_reference(default_parse_boot_param, parse_boot_param);
351 * Fake up a boot descriptor table
354 fake_preload_metadata(struct arm_boot_params *abp __unused, void *dtb_ptr,
358 vm_offset_t zstart = 0, zend = 0;
360 vm_offset_t lastaddr;
362 static uint32_t fake_preload[35];
364 fake_preload[i++] = MODINFO_NAME;
365 fake_preload[i++] = strlen("kernel") + 1;
366 strcpy((char*)&fake_preload[i++], "kernel");
368 fake_preload[i++] = MODINFO_TYPE;
369 fake_preload[i++] = strlen("elf kernel") + 1;
370 strcpy((char*)&fake_preload[i++], "elf kernel");
372 fake_preload[i++] = MODINFO_ADDR;
373 fake_preload[i++] = sizeof(vm_offset_t);
374 fake_preload[i++] = KERNVIRTADDR;
375 fake_preload[i++] = MODINFO_SIZE;
376 fake_preload[i++] = sizeof(uint32_t);
377 fake_preload[i++] = (uint32_t)&end - KERNVIRTADDR;
379 if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) {
380 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM;
381 fake_preload[i++] = sizeof(vm_offset_t);
382 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4);
383 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM;
384 fake_preload[i++] = sizeof(vm_offset_t);
385 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8);
386 lastaddr = *(uint32_t *)(KERNVIRTADDR + 8);
388 zstart = *(uint32_t *)(KERNVIRTADDR + 4);
389 db_fetch_ksymtab(zstart, zend);
392 lastaddr = (vm_offset_t)&end;
393 if (dtb_ptr != NULL) {
394 /* Copy DTB to KVA space and insert it into module chain. */
395 lastaddr = roundup(lastaddr, sizeof(int));
396 fake_preload[i++] = MODINFO_METADATA | MODINFOMD_DTBP;
397 fake_preload[i++] = sizeof(uint32_t);
398 fake_preload[i++] = (uint32_t)lastaddr;
399 memmove((void *)lastaddr, dtb_ptr, dtb_size);
400 lastaddr += dtb_size;
401 lastaddr = roundup(lastaddr, sizeof(int));
403 fake_preload[i++] = 0;
405 preload_metadata = (void *)fake_preload;
407 init_static_kenv(NULL, 0);
414 arm_add_efi_map_entries(struct efi_map_header *efihdr, struct mem_region *mr,
417 struct efi_md *map, *p;
419 size_t efisz, memory_size;
422 static const char *types[] = {
428 "RuntimeServicesCode",
429 "RuntimeServicesData",
430 "ConventionalMemory",
435 "MemoryMappedIOPortSpace",
443 * Memory map data provided by UEFI via the GetMemoryMap
446 efisz = roundup2(sizeof(struct efi_map_header), 0x10);
447 map = (struct efi_md *)((uint8_t *)efihdr + efisz);
449 if (efihdr->descriptor_size == 0)
451 ndesc = efihdr->memory_size / efihdr->descriptor_size;
453 if (boothowto & RB_VERBOSE)
454 printf("%23s %12s %12s %8s %4s\n",
455 "Type", "Physical", "Virtual", "#Pages", "Attr");
458 for (i = 0, j = 0, p = map; i < ndesc; i++,
459 p = efi_next_descriptor(p, efihdr->descriptor_size)) {
460 if (boothowto & RB_VERBOSE) {
461 if (p->md_type < nitems(types))
462 type = types[p->md_type];
465 printf("%23s %012llx %12p %08llx ", type, p->md_phys,
466 p->md_virt, p->md_pages);
467 if (p->md_attr & EFI_MD_ATTR_UC)
469 if (p->md_attr & EFI_MD_ATTR_WC)
471 if (p->md_attr & EFI_MD_ATTR_WT)
473 if (p->md_attr & EFI_MD_ATTR_WB)
475 if (p->md_attr & EFI_MD_ATTR_UCE)
477 if (p->md_attr & EFI_MD_ATTR_WP)
479 if (p->md_attr & EFI_MD_ATTR_RP)
481 if (p->md_attr & EFI_MD_ATTR_XP)
483 if (p->md_attr & EFI_MD_ATTR_NV)
485 if (p->md_attr & EFI_MD_ATTR_MORE_RELIABLE)
486 printf("MORE_RELIABLE ");
487 if (p->md_attr & EFI_MD_ATTR_RO)
489 if (p->md_attr & EFI_MD_ATTR_RT)
494 switch (p->md_type) {
495 case EFI_MD_TYPE_CODE:
496 case EFI_MD_TYPE_DATA:
497 case EFI_MD_TYPE_BS_CODE:
498 case EFI_MD_TYPE_BS_DATA:
499 case EFI_MD_TYPE_FREE:
501 * We're allowed to use any entry with these types.
509 if (j >= FDT_MEM_REGIONS)
512 mr[j].mr_start = p->md_phys;
513 mr[j].mr_size = p->md_pages * PAGE_SIZE;
514 memory_size += mr[j].mr_size;