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>
49 #include <machine/vmparam.h> /* For KERNVIRTADDR */
52 #include <contrib/libfdt/libfdt.h>
53 #include <dev/fdt/fdt_common.h>
61 #define debugf(fmt, args...) printf(fmt, ##args)
63 #define debugf(fmt, args...)
68 static uint32_t board_revision;
69 /* hex representation of uint64_t */
70 static char board_serial[32];
71 static char *loader_envp;
73 #if defined(LINUX_BOOT_ABI)
74 #define LBABI_MAX_BANKS 10
75 #define CMDLINE_GUARD "FreeBSD:"
76 static uint32_t board_id;
77 static struct arm_lbabi_tag *atag_list;
78 static char linux_command_line[LBABI_MAX_COMMAND_LINE + 1];
79 static char atags[LBABI_MAX_COMMAND_LINE * 2];
80 #endif /* defined(LINUX_BOOT_ABI) */
82 SYSCTL_NODE(_hw, OID_AUTO, board, CTLFLAG_RD, 0, "Board attributes");
83 SYSCTL_UINT(_hw_board, OID_AUTO, revision, CTLFLAG_RD,
84 &board_revision, 0, "Board revision");
85 SYSCTL_STRING(_hw_board, OID_AUTO, serial, CTLFLAG_RD,
86 board_serial, 0, "Board serial");
89 SYSCTL_INT(_hw, HW_FLOATINGPT, floatingpoint, CTLFLAG_RD,
90 &vfp_exists, 0, "Floating point support enabled");
93 board_set_serial(uint64_t serial)
96 snprintf(board_serial, sizeof(board_serial)-1,
101 board_set_revision(uint32_t revision)
104 board_revision = revision;
126 debugf("loader passed (static) kenv:\n");
127 if (loader_envp == NULL) {
128 debugf(" no env, null ptr\n");
131 debugf(" loader_envp = 0x%08x\n", (uint32_t)loader_envp);
133 for (cp = loader_envp; cp != NULL; cp = kenv_next(cp))
134 debugf(" %x %s\n", (uint32_t)cp, cp);
138 #if defined(LINUX_BOOT_ABI)
140 /* Convert the U-Boot command line into FreeBSD kenv and boot options. */
142 cmdline_set_env(char *cmdline, const char *guard)
144 char *cmdline_next, *env;
145 size_t size, guard_len;
148 size = strlen(cmdline);
149 /* Skip leading spaces. */
150 for (; isspace(*cmdline) && (size > 0); cmdline++)
153 /* Test and remove guard. */
154 if (guard != NULL && guard[0] != '\0') {
155 guard_len = strlen(guard);
156 if (strncasecmp(cmdline, guard, guard_len) != 0)
158 cmdline += guard_len;
162 /* Skip leading spaces. */
163 for (; isspace(*cmdline) && (size > 0); cmdline++)
166 /* Replace ',' with '\0'. */
167 /* TODO: implement escaping for ',' character. */
168 cmdline_next = cmdline;
169 while(strsep(&cmdline_next, ",") != NULL)
171 init_static_kenv(cmdline, 0);
172 /* Parse boothowto. */
173 for (i = 0; howto_names[i].ev != NULL; i++) {
174 env = kern_getenv(howto_names[i].ev);
176 if (strtoul(env, NULL, 10) != 0)
177 boothowto |= howto_names[i].mask;
183 void arm_parse_fdt_bootargs(void)
187 if (loader_envp == NULL && fdt_get_chosen_bootargs(linux_command_line,
188 LBABI_MAX_COMMAND_LINE) == 0)
189 cmdline_set_env(linux_command_line, CMDLINE_GUARD);
194 linux_parse_boot_param(struct arm_boot_params *abp)
196 struct arm_lbabi_tag *walker;
200 vm_offset_t lastaddr;
202 struct fdt_header *dtb_ptr;
207 * Linux boot ABI: r0 = 0, r1 is the board type (!= 0) and r2
208 * is atags or dtb pointer. If all of these aren't satisfied,
209 * then punt. Unfortunately, it looks like DT enabled kernels
210 * doesn't uses board type and U-Boot delivers 0 in r1 for them.
212 if (abp->abp_r0 != 0 || abp->abp_r2 == 0)
215 /* Test if r2 point to valid DTB. */
216 dtb_ptr = (struct fdt_header *)abp->abp_r2;
217 if (fdt_check_header(dtb_ptr) == 0) {
218 dtb_size = fdt_totalsize(dtb_ptr);
219 return (fake_preload_metadata(abp, dtb_ptr, dtb_size));
223 board_id = abp->abp_r1;
224 walker = (struct arm_lbabi_tag *)abp->abp_r2;
226 if (ATAG_TAG(walker) != ATAG_CORE)
230 while (ATAG_TAG(walker) != ATAG_NONE) {
231 switch (ATAG_TAG(walker)) {
235 arm_physmem_hardware_region(walker->u.tag_mem.start,
236 walker->u.tag_mem.size);
241 serial = walker->u.tag_sn.high;
243 serial |= walker->u.tag_sn.low;
244 board_set_serial(serial);
247 revision = walker->u.tag_rev.rev;
248 board_set_revision(revision);
251 size = ATAG_SIZE(walker) -
252 sizeof(struct arm_lbabi_header);
253 size = min(size, LBABI_MAX_COMMAND_LINE);
254 strncpy(linux_command_line, walker->u.tag_cmd.command,
256 linux_command_line[size] = '\0';
261 walker = ATAG_NEXT(walker);
264 /* Save a copy for later */
265 bcopy(atag_list, atags,
266 (char *)walker - (char *)atag_list + ATAG_SIZE(walker));
268 lastaddr = fake_preload_metadata(abp, NULL, 0);
269 cmdline_set_env(linux_command_line, CMDLINE_GUARD);
274 #if defined(FREEBSD_BOOT_LOADER)
276 freebsd_parse_boot_param(struct arm_boot_params *abp)
278 vm_offset_t lastaddr = 0;
282 vm_offset_t ksym_start;
283 vm_offset_t ksym_end;
287 * Mask metadata pointer: it is supposed to be on page boundary. If
288 * the first argument (mdp) doesn't point to a valid address the
289 * bootloader must have passed us something else than the metadata
290 * ptr, so we give up. Also give up if we cannot find metadta section
291 * the loader creates that we get all this data out of.
294 if ((mdp = (void *)(abp->abp_r0 & ~PAGE_MASK)) == NULL)
296 preload_metadata = mdp;
297 kmdp = preload_search_by_type("elf kernel");
301 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
302 loader_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
303 init_static_kenv(loader_envp, 0);
304 lastaddr = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
306 ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
307 ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
308 db_fetch_ksymtab(ksym_start, ksym_end);
315 default_parse_boot_param(struct arm_boot_params *abp)
317 vm_offset_t lastaddr;
319 #if defined(LINUX_BOOT_ABI)
320 if ((lastaddr = linux_parse_boot_param(abp)) != 0)
323 #if defined(FREEBSD_BOOT_LOADER)
324 if ((lastaddr = freebsd_parse_boot_param(abp)) != 0)
327 /* Fall back to hardcoded metadata. */
328 lastaddr = fake_preload_metadata(abp, NULL, 0);
334 * Stub version of the boot parameter parsing routine. We are
335 * called early in initarm, before even VM has been initialized.
336 * This routine needs to preserve any data that the boot loader
337 * has passed in before the kernel starts to grow past the end
338 * of the BSS, traditionally the place boot-loaders put this data.
340 * Since this is called so early, things that depend on the vm system
341 * being setup (including access to some SoC's serial ports), about
342 * all that can be done in this routine is to copy the arguments.
344 * This is the default boot parameter parsing routine. Individual
345 * kernels/boards can override this weak function with one of their
346 * own. We just fake metadata...
348 __weak_reference(default_parse_boot_param, parse_boot_param);
352 * Fake up a boot descriptor table
355 fake_preload_metadata(struct arm_boot_params *abp __unused, void *dtb_ptr,
359 vm_offset_t zstart = 0, zend = 0;
361 vm_offset_t lastaddr;
363 static uint32_t fake_preload[35];
365 fake_preload[i++] = MODINFO_NAME;
366 fake_preload[i++] = strlen("kernel") + 1;
367 strcpy((char*)&fake_preload[i++], "kernel");
369 fake_preload[i++] = MODINFO_TYPE;
370 fake_preload[i++] = strlen("elf kernel") + 1;
371 strcpy((char*)&fake_preload[i++], "elf kernel");
373 fake_preload[i++] = MODINFO_ADDR;
374 fake_preload[i++] = sizeof(vm_offset_t);
375 fake_preload[i++] = KERNVIRTADDR;
376 fake_preload[i++] = MODINFO_SIZE;
377 fake_preload[i++] = sizeof(uint32_t);
378 fake_preload[i++] = (uint32_t)&end - KERNVIRTADDR;
380 if (*(uint32_t *)KERNVIRTADDR == MAGIC_TRAMP_NUMBER) {
381 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_SSYM;
382 fake_preload[i++] = sizeof(vm_offset_t);
383 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 4);
384 fake_preload[i++] = MODINFO_METADATA|MODINFOMD_ESYM;
385 fake_preload[i++] = sizeof(vm_offset_t);
386 fake_preload[i++] = *(uint32_t *)(KERNVIRTADDR + 8);
387 lastaddr = *(uint32_t *)(KERNVIRTADDR + 8);
389 zstart = *(uint32_t *)(KERNVIRTADDR + 4);
390 db_fetch_ksymtab(zstart, zend);
393 lastaddr = (vm_offset_t)&end;
394 if (dtb_ptr != NULL) {
395 /* Copy DTB to KVA space and insert it into module chain. */
396 lastaddr = roundup(lastaddr, sizeof(int));
397 fake_preload[i++] = MODINFO_METADATA | MODINFOMD_DTBP;
398 fake_preload[i++] = sizeof(uint32_t);
399 fake_preload[i++] = (uint32_t)lastaddr;
400 memmove((void *)lastaddr, dtb_ptr, dtb_size);
401 lastaddr += dtb_size;
402 lastaddr = roundup(lastaddr, sizeof(int));
404 fake_preload[i++] = 0;
406 preload_metadata = (void *)fake_preload;
408 init_static_kenv(NULL, 0);
415 arm_add_efi_map_entries(struct efi_map_header *efihdr, struct mem_region *mr,
418 struct efi_md *map, *p;
420 size_t efisz, memory_size;
423 static const char *types[] = {
429 "RuntimeServicesCode",
430 "RuntimeServicesData",
431 "ConventionalMemory",
436 "MemoryMappedIOPortSpace",
444 * Memory map data provided by UEFI via the GetMemoryMap
447 efisz = roundup2(sizeof(struct efi_map_header), 0x10);
448 map = (struct efi_md *)((uint8_t *)efihdr + efisz);
450 if (efihdr->descriptor_size == 0)
452 ndesc = efihdr->memory_size / efihdr->descriptor_size;
454 if (boothowto & RB_VERBOSE)
455 printf("%23s %12s %12s %8s %4s\n",
456 "Type", "Physical", "Virtual", "#Pages", "Attr");
459 for (i = 0, j = 0, p = map; i < ndesc; i++,
460 p = efi_next_descriptor(p, efihdr->descriptor_size)) {
461 if (boothowto & RB_VERBOSE) {
462 if (p->md_type < nitems(types))
463 type = types[p->md_type];
466 printf("%23s %012llx %12p %08llx ", type, p->md_phys,
467 p->md_virt, p->md_pages);
468 if (p->md_attr & EFI_MD_ATTR_UC)
470 if (p->md_attr & EFI_MD_ATTR_WC)
472 if (p->md_attr & EFI_MD_ATTR_WT)
474 if (p->md_attr & EFI_MD_ATTR_WB)
476 if (p->md_attr & EFI_MD_ATTR_UCE)
478 if (p->md_attr & EFI_MD_ATTR_WP)
480 if (p->md_attr & EFI_MD_ATTR_RP)
482 if (p->md_attr & EFI_MD_ATTR_XP)
484 if (p->md_attr & EFI_MD_ATTR_NV)
486 if (p->md_attr & EFI_MD_ATTR_MORE_RELIABLE)
487 printf("MORE_RELIABLE ");
488 if (p->md_attr & EFI_MD_ATTR_RO)
490 if (p->md_attr & EFI_MD_ATTR_RT)
495 switch (p->md_type) {
496 case EFI_MD_TYPE_CODE:
497 case EFI_MD_TYPE_DATA:
498 case EFI_MD_TYPE_BS_CODE:
499 case EFI_MD_TYPE_BS_DATA:
500 case EFI_MD_TYPE_FREE:
502 * We're allowed to use any entry with these types.
510 if (j >= FDT_MEM_REGIONS)
513 mr[j].mr_start = p->md_phys;
514 mr[j].mr_size = p->md_pages * PAGE_SIZE;
515 memory_size += mr[j].mr_size;