1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002
5 * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
6 */
7
8 /*
9 * Linux x86 zImage and bzImage loading
10 *
11 * based on the procdure described in
12 * linux/Documentation/i386/boot.txt
13 */
14
15 #define LOG_CATEGORY LOGC_BOOT
16
17 #include <common.h>
18 #include <bootm.h>
19 #include <command.h>
20 #include <env.h>
21 #include <irq_func.h>
22 #include <log.h>
23 #include <malloc.h>
24 #include <acpi/acpi_table.h>
25 #include <asm/io.h>
26 #include <asm/ptrace.h>
27 #include <asm/zimage.h>
28 #include <asm/byteorder.h>
29 #include <asm/bootm.h>
30 #include <asm/bootparam.h>
31 #ifdef CONFIG_SYS_COREBOOT
32 #include <asm/arch/timestamp.h>
33 #endif
34 #include <linux/compiler.h>
35 #include <linux/ctype.h>
36 #include <linux/libfdt.h>
37
38 /*
39 * Memory lay-out:
40 *
41 * relative to setup_base (which is 0x90000 currently)
42 *
43 * 0x0000-0x7FFF Real mode kernel
44 * 0x8000-0x8FFF Stack and heap
45 * 0x9000-0x90FF Kernel command line
46 */
47 #define DEFAULT_SETUP_BASE 0x90000
48 #define COMMAND_LINE_OFFSET 0x9000
49 #define HEAP_END_OFFSET 0x8e00
50
51 #define COMMAND_LINE_SIZE 2048
52
53 /**
54 * struct zboot_state - Current state of the boot
55 *
56 * @bzimage_addr: Address of the bzImage to boot
57 * @bzimage_size: Size of the bzImage, or 0 to detect this
58 * @initrd_addr: Address of the initial ramdisk, or 0 if none
59 * @initrd_size: Size of the initial ramdisk, or 0 if none
60 * @load_address: Address where the bzImage is moved before booting, either
61 * BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
62 * @base_ptr: Pointer to the boot parameters, typically at address
63 * DEFAULT_SETUP_BASE
64 * @cmdline: Environment variable containing the 'override' command line, or
65 * NULL to use the one in the setup block
66 */
67 struct zboot_state {
68 ulong bzimage_addr;
69 ulong bzimage_size;
70 ulong initrd_addr;
71 ulong initrd_size;
72 ulong load_address;
73 struct boot_params *base_ptr;
74 char *cmdline;
75 } state;
76
77 enum {
78 ZBOOT_STATE_START = BIT(0),
79 ZBOOT_STATE_LOAD = BIT(1),
80 ZBOOT_STATE_SETUP = BIT(2),
81 ZBOOT_STATE_INFO = BIT(3),
82 ZBOOT_STATE_GO = BIT(4),
83
84 /* This one doesn't execute automatically, so stop the count before 5 */
85 ZBOOT_STATE_DUMP = BIT(5),
86 ZBOOT_STATE_COUNT = 5,
87 };
88
build_command_line(char * command_line,int auto_boot)89 static void build_command_line(char *command_line, int auto_boot)
90 {
91 char *env_command_line;
92
93 command_line[0] = '\0';
94
95 env_command_line = env_get("bootargs");
96
97 /* set console= argument if we use a serial console */
98 if (!strstr(env_command_line, "console=")) {
99 if (!strcmp(env_get("stdout"), "serial")) {
100
101 /* We seem to use serial console */
102 sprintf(command_line, "console=ttyS0,%s ",
103 env_get("baudrate"));
104 }
105 }
106
107 if (auto_boot)
108 strcat(command_line, "auto ");
109
110 if (env_command_line)
111 strcat(command_line, env_command_line);
112 #ifdef DEBUG
113 printf("Kernel command line:");
114 puts(command_line);
115 printf("\n");
116 #endif
117 }
118
kernel_magic_ok(struct setup_header * hdr)119 static int kernel_magic_ok(struct setup_header *hdr)
120 {
121 if (KERNEL_MAGIC != hdr->boot_flag) {
122 printf("Error: Invalid Boot Flag "
123 "(found 0x%04x, expected 0x%04x)\n",
124 hdr->boot_flag, KERNEL_MAGIC);
125 return 0;
126 } else {
127 printf("Valid Boot Flag\n");
128 return 1;
129 }
130 }
131
get_boot_protocol(struct setup_header * hdr,bool verbose)132 static int get_boot_protocol(struct setup_header *hdr, bool verbose)
133 {
134 if (hdr->header == KERNEL_V2_MAGIC) {
135 if (verbose)
136 printf("Magic signature found\n");
137 return hdr->version;
138 } else {
139 /* Very old kernel */
140 if (verbose)
141 printf("Magic signature not found\n");
142 return 0x0100;
143 }
144 }
145
setup_device_tree(struct setup_header * hdr,const void * fdt_blob)146 static int setup_device_tree(struct setup_header *hdr, const void *fdt_blob)
147 {
148 int bootproto = get_boot_protocol(hdr, false);
149 struct setup_data *sd;
150 int size;
151
152 if (bootproto < 0x0209)
153 return -ENOTSUPP;
154
155 if (!fdt_blob)
156 return 0;
157
158 size = fdt_totalsize(fdt_blob);
159 if (size < 0)
160 return -EINVAL;
161
162 size += sizeof(struct setup_data);
163 sd = (struct setup_data *)malloc(size);
164 if (!sd) {
165 printf("Not enough memory for DTB setup data\n");
166 return -ENOMEM;
167 }
168
169 sd->next = hdr->setup_data;
170 sd->type = SETUP_DTB;
171 sd->len = fdt_totalsize(fdt_blob);
172 memcpy(sd->data, fdt_blob, sd->len);
173 hdr->setup_data = (unsigned long)sd;
174
175 return 0;
176 }
177
get_kernel_version(struct boot_params * params,void * kernel_base)178 static const char *get_kernel_version(struct boot_params *params,
179 void *kernel_base)
180 {
181 struct setup_header *hdr = ¶ms->hdr;
182 int bootproto;
183 const char *s, *end;
184
185 bootproto = get_boot_protocol(hdr, false);
186 if (bootproto < 0x0200 || hdr->setup_sects < 15)
187 return NULL;
188
189 /* sanity-check the kernel version in case it is missing */
190 for (s = kernel_base + hdr->kernel_version + 0x200, end = s + 0x100; *s;
191 s++) {
192 if (!isprint(*s))
193 return NULL;
194 }
195
196 return kernel_base + hdr->kernel_version + 0x200;
197 }
198
load_zimage(char * image,unsigned long kernel_size,ulong * load_addressp)199 struct boot_params *load_zimage(char *image, unsigned long kernel_size,
200 ulong *load_addressp)
201 {
202 struct boot_params *setup_base;
203 const char *version;
204 int setup_size;
205 int bootproto;
206 int big_image;
207
208 struct boot_params *params = (struct boot_params *)image;
209 struct setup_header *hdr = ¶ms->hdr;
210
211 /* base address for real-mode segment */
212 setup_base = (struct boot_params *)DEFAULT_SETUP_BASE;
213
214 if (!kernel_magic_ok(hdr))
215 return 0;
216
217 /* determine size of setup */
218 if (0 == hdr->setup_sects) {
219 log_warning("Setup Sectors = 0 (defaulting to 4)\n");
220 setup_size = 5 * 512;
221 } else {
222 setup_size = (hdr->setup_sects + 1) * 512;
223 }
224
225 log_debug("Setup Size = 0x%8.8lx\n", (ulong)setup_size);
226
227 if (setup_size > SETUP_MAX_SIZE)
228 printf("Error: Setup is too large (%d bytes)\n", setup_size);
229
230 /* determine boot protocol version */
231 bootproto = get_boot_protocol(hdr, true);
232
233 log_debug("Using boot protocol version %x.%02x\n",
234 (bootproto & 0xff00) >> 8, bootproto & 0xff);
235
236 version = get_kernel_version(params, image);
237 if (version)
238 printf("Linux kernel version %s\n", version);
239 else
240 printf("Setup Sectors < 15 - Cannot print kernel version\n");
241
242 /* Determine image type */
243 big_image = (bootproto >= 0x0200) &&
244 (hdr->loadflags & BIG_KERNEL_FLAG);
245
246 /* Determine load address */
247 if (big_image)
248 *load_addressp = BZIMAGE_LOAD_ADDR;
249 else
250 *load_addressp = ZIMAGE_LOAD_ADDR;
251
252 printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
253 memset(setup_base, 0, sizeof(*setup_base));
254 setup_base->hdr = params->hdr;
255
256 if (bootproto >= 0x0204)
257 kernel_size = hdr->syssize * 16;
258 else
259 kernel_size -= setup_size;
260
261 if (bootproto == 0x0100) {
262 /*
263 * A very old kernel MUST have its real-mode code
264 * loaded at 0x90000
265 */
266 if ((ulong)setup_base != 0x90000) {
267 /* Copy the real-mode kernel */
268 memmove((void *)0x90000, setup_base, setup_size);
269
270 /* Copy the command line */
271 memmove((void *)0x99000,
272 (u8 *)setup_base + COMMAND_LINE_OFFSET,
273 COMMAND_LINE_SIZE);
274
275 /* Relocated */
276 setup_base = (struct boot_params *)0x90000;
277 }
278
279 /* It is recommended to clear memory up to the 32K mark */
280 memset((u8 *)0x90000 + setup_size, 0,
281 SETUP_MAX_SIZE - setup_size);
282 }
283
284 if (big_image) {
285 if (kernel_size > BZIMAGE_MAX_SIZE) {
286 printf("Error: bzImage kernel too big! "
287 "(size: %ld, max: %d)\n",
288 kernel_size, BZIMAGE_MAX_SIZE);
289 return 0;
290 }
291 } else if ((kernel_size) > ZIMAGE_MAX_SIZE) {
292 printf("Error: zImage kernel too big! (size: %ld, max: %d)\n",
293 kernel_size, ZIMAGE_MAX_SIZE);
294 return 0;
295 }
296
297 printf("Loading %s at address %lx (%ld bytes)\n",
298 big_image ? "bzImage" : "zImage", *load_addressp, kernel_size);
299
300 memmove((void *)*load_addressp, image + setup_size, kernel_size);
301
302 return setup_base;
303 }
304
setup_zimage(struct boot_params * setup_base,char * cmd_line,int auto_boot,ulong initrd_addr,ulong initrd_size,ulong cmdline_force)305 int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
306 ulong initrd_addr, ulong initrd_size, ulong cmdline_force)
307 {
308 struct setup_header *hdr = &setup_base->hdr;
309 int bootproto = get_boot_protocol(hdr, false);
310
311 log_debug("Setup E820 entries\n");
312 setup_base->e820_entries = install_e820_map(
313 ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
314
315 if (bootproto == 0x0100) {
316 setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
317 setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET;
318 }
319 if (bootproto >= 0x0200) {
320 hdr->type_of_loader = 0x80; /* U-Boot version 0 */
321 if (initrd_addr) {
322 printf("Initial RAM disk at linear address "
323 "0x%08lx, size %ld bytes\n",
324 initrd_addr, initrd_size);
325
326 hdr->ramdisk_image = initrd_addr;
327 hdr->ramdisk_size = initrd_size;
328 }
329 }
330
331 if (bootproto >= 0x0201) {
332 hdr->heap_end_ptr = HEAP_END_OFFSET;
333 hdr->loadflags |= HEAP_FLAG;
334 }
335
336 if (cmd_line) {
337 int max_size = 0xff;
338 int ret;
339
340 log_debug("Setup cmdline\n");
341 if (bootproto >= 0x0206)
342 max_size = hdr->cmdline_size;
343 if (bootproto >= 0x0202) {
344 hdr->cmd_line_ptr = (uintptr_t)cmd_line;
345 } else if (bootproto >= 0x0200) {
346 setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
347 setup_base->screen_info.cl_offset =
348 (uintptr_t)cmd_line - (uintptr_t)setup_base;
349
350 hdr->setup_move_size = 0x9100;
351 }
352
353 /* build command line at COMMAND_LINE_OFFSET */
354 if (cmdline_force)
355 strcpy(cmd_line, (char *)cmdline_force);
356 else
357 build_command_line(cmd_line, auto_boot);
358 ret = bootm_process_cmdline(cmd_line, max_size, BOOTM_CL_ALL);
359 if (ret) {
360 printf("Cmdline setup failed (max_size=%x, bootproto=%x, err=%d)\n",
361 max_size, bootproto, ret);
362 return ret;
363 }
364 printf("Kernel command line: \"");
365 puts(cmd_line);
366 printf("\"\n");
367 }
368
369 if (IS_ENABLED(CONFIG_INTEL_MID) && bootproto >= 0x0207)
370 hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
371
372 if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE))
373 setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
374
375 log_debug("Setup devicetree\n");
376 setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
377 setup_video(&setup_base->screen_info);
378
379 if (IS_ENABLED(CONFIG_EFI_STUB))
380 setup_efi_info(&setup_base->efi_info);
381
382 return 0;
383 }
384
do_zboot_start(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])385 static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc,
386 char *const argv[])
387 {
388 const char *s;
389
390 memset(&state, '\0', sizeof(state));
391 if (argc >= 2) {
392 /* argv[1] holds the address of the bzImage */
393 s = argv[1];
394 } else {
395 s = env_get("fileaddr");
396 }
397
398 if (s)
399 state.bzimage_addr = simple_strtoul(s, NULL, 16);
400
401 if (argc >= 3) {
402 /* argv[2] holds the size of the bzImage */
403 state.bzimage_size = simple_strtoul(argv[2], NULL, 16);
404 }
405
406 if (argc >= 4)
407 state.initrd_addr = simple_strtoul(argv[3], NULL, 16);
408 if (argc >= 5)
409 state.initrd_size = simple_strtoul(argv[4], NULL, 16);
410 if (argc >= 6) {
411 /*
412 * When the base_ptr is passed in, we assume that the image is
413 * already loaded at the address given by argv[1] and therefore
414 * the original bzImage is somewhere else, or not accessible.
415 * In any case, we don't need access to the bzImage since all
416 * the processing is assumed to be done.
417 *
418 * So set the base_ptr to the given address, use this arg as the
419 * load address and set bzimage_addr to 0 so we know that it
420 * cannot be proceesed (or processed again).
421 */
422 state.base_ptr = (void *)simple_strtoul(argv[5], NULL, 16);
423 state.load_address = state.bzimage_addr;
424 state.bzimage_addr = 0;
425 }
426 if (argc >= 7)
427 state.cmdline = env_get(argv[6]);
428
429 return 0;
430 }
431
do_zboot_load(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])432 static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc,
433 char *const argv[])
434 {
435 struct boot_params *base_ptr;
436
437 if (state.base_ptr) {
438 struct boot_params *from = (struct boot_params *)state.base_ptr;
439
440 base_ptr = (struct boot_params *)DEFAULT_SETUP_BASE;
441 log_debug("Building boot_params at 0x%8.8lx\n",
442 (ulong)base_ptr);
443 memset(base_ptr, '\0', sizeof(*base_ptr));
444 base_ptr->hdr = from->hdr;
445 } else {
446 base_ptr = load_zimage((void *)state.bzimage_addr, state.bzimage_size,
447 &state.load_address);
448 if (!base_ptr) {
449 puts("## Kernel loading failed ...\n");
450 return CMD_RET_FAILURE;
451 }
452 }
453 state.base_ptr = base_ptr;
454 if (env_set_hex("zbootbase", (ulong)base_ptr) ||
455 env_set_hex("zbootaddr", state.load_address))
456 return CMD_RET_FAILURE;
457
458 return 0;
459 }
460
do_zboot_setup(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])461 static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc,
462 char *const argv[])
463 {
464 struct boot_params *base_ptr = state.base_ptr;
465 int ret;
466
467 if (!base_ptr) {
468 printf("base is not set: use 'zboot load' first\n");
469 return CMD_RET_FAILURE;
470 }
471 ret = setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
472 0, state.initrd_addr, state.initrd_size,
473 (ulong)state.cmdline);
474 if (ret) {
475 puts("Setting up boot parameters failed ...\n");
476 return CMD_RET_FAILURE;
477 }
478
479 return 0;
480 }
481
do_zboot_info(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])482 static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc,
483 char *const argv[])
484 {
485 printf("Kernel loaded at %08lx, setup_base=%p\n",
486 state.load_address, state.base_ptr);
487
488 return 0;
489 }
490
do_zboot_go(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])491 static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc,
492 char *const argv[])
493 {
494 int ret;
495
496 disable_interrupts();
497
498 /* we assume that the kernel is in place */
499 ret = boot_linux_kernel((ulong)state.base_ptr, state.load_address,
500 false);
501 printf("Kernel returned! (err=%d)\n", ret);
502
503 return CMD_RET_FAILURE;
504 }
505
print_num(const char * name,ulong value)506 static void print_num(const char *name, ulong value)
507 {
508 printf("%-20s: %lx\n", name, value);
509 }
510
print_num64(const char * name,u64 value)511 static void print_num64(const char *name, u64 value)
512 {
513 printf("%-20s: %llx\n", name, value);
514 }
515
516 static const char *const e820_type_name[E820_COUNT] = {
517 [E820_RAM] = "RAM",
518 [E820_RESERVED] = "Reserved",
519 [E820_ACPI] = "ACPI",
520 [E820_NVS] = "ACPI NVS",
521 [E820_UNUSABLE] = "Unusable",
522 };
523
524 static const char *const bootloader_id[] = {
525 "LILO",
526 "Loadlin",
527 "bootsect-loader",
528 "Syslinux",
529 "Etherboot/gPXE/iPXE",
530 "ELILO",
531 "undefined",
532 "GRUB",
533 "U-Boot",
534 "Xen",
535 "Gujin",
536 "Qemu",
537 "Arcturus Networks uCbootloader",
538 "kexec-tools",
539 "Extended",
540 "Special",
541 "Reserved",
542 "Minimal Linux Bootloader",
543 "OVMF UEFI virtualization stack",
544 };
545
546 struct flag_info {
547 uint bit;
548 const char *name;
549 };
550
551 static struct flag_info load_flags[] = {
552 { LOADED_HIGH, "loaded-high" },
553 { QUIET_FLAG, "quiet" },
554 { KEEP_SEGMENTS, "keep-segments" },
555 { CAN_USE_HEAP, "can-use-heap" },
556 };
557
558 static struct flag_info xload_flags[] = {
559 { XLF_KERNEL_64, "64-bit-entry" },
560 { XLF_CAN_BE_LOADED_ABOVE_4G, "can-load-above-4gb" },
561 { XLF_EFI_HANDOVER_32, "32-efi-handoff" },
562 { XLF_EFI_HANDOVER_64, "64-efi-handoff" },
563 { XLF_EFI_KEXEC, "kexec-efi-runtime" },
564 };
565
print_flags(struct flag_info * flags,int count,uint value)566 static void print_flags(struct flag_info *flags, int count, uint value)
567 {
568 int i;
569
570 printf("%-20s:", "");
571 for (i = 0; i < count; i++) {
572 uint mask = flags[i].bit;
573
574 if (value & mask)
575 printf(" %s", flags[i].name);
576 }
577 printf("\n");
578 }
579
show_loader(struct setup_header * hdr)580 static void show_loader(struct setup_header *hdr)
581 {
582 bool version_valid = false;
583 int type, version;
584 const char *name;
585
586 type = hdr->type_of_loader >> 4;
587 version = hdr->type_of_loader & 0xf;
588 if (type == 0xe)
589 type = 0x10 + hdr->ext_loader_type;
590 version |= hdr->ext_loader_ver << 4;
591 if (!hdr->type_of_loader) {
592 name = "pre-2.00 bootloader";
593 } else if (hdr->type_of_loader == 0xff) {
594 name = "unknown";
595 } else if (type < ARRAY_SIZE(bootloader_id)) {
596 name = bootloader_id[type];
597 version_valid = true;
598 } else {
599 name = "undefined";
600 }
601 printf("%20s %s", "", name);
602 if (version_valid)
603 printf(", version %x", version);
604 printf("\n");
605 }
606
zimage_dump(struct boot_params * base_ptr)607 void zimage_dump(struct boot_params *base_ptr)
608 {
609 struct setup_header *hdr;
610 const char *version;
611 int i;
612
613 printf("Setup located at %p:\n\n", base_ptr);
614 print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
615
616 printf("E820: %d entries\n", base_ptr->e820_entries);
617 if (base_ptr->e820_entries) {
618 printf("%18s %16s %s\n", "Addr", "Size", "Type");
619 for (i = 0; i < base_ptr->e820_entries; i++) {
620 struct e820_entry *entry = &base_ptr->e820_map[i];
621
622 printf("%12llx %10llx %s\n", entry->addr, entry->size,
623 entry->type < E820_COUNT ?
624 e820_type_name[entry->type] :
625 simple_itoa(entry->type));
626 }
627 }
628
629 hdr = &base_ptr->hdr;
630 print_num("Setup sectors", hdr->setup_sects);
631 print_num("Root flags", hdr->root_flags);
632 print_num("Sys size", hdr->syssize);
633 print_num("RAM size", hdr->ram_size);
634 print_num("Video mode", hdr->vid_mode);
635 print_num("Root dev", hdr->root_dev);
636 print_num("Boot flag", hdr->boot_flag);
637 print_num("Jump", hdr->jump);
638 print_num("Header", hdr->header);
639 if (hdr->header == KERNEL_V2_MAGIC)
640 printf("%-20s %s\n", "", "Kernel V2");
641 else
642 printf("%-20s %s\n", "", "Ancient kernel, using version 100");
643 print_num("Version", hdr->version);
644 print_num("Real mode switch", hdr->realmode_swtch);
645 print_num("Start sys", hdr->start_sys);
646 print_num("Kernel version", hdr->kernel_version);
647 version = get_kernel_version(base_ptr, (void *)state.bzimage_addr);
648 if (version)
649 printf(" @%p: %s\n", version, version);
650 print_num("Type of loader", hdr->type_of_loader);
651 show_loader(hdr);
652 print_num("Load flags", hdr->loadflags);
653 print_flags(load_flags, ARRAY_SIZE(load_flags), hdr->loadflags);
654 print_num("Setup move size", hdr->setup_move_size);
655 print_num("Code32 start", hdr->code32_start);
656 print_num("Ramdisk image", hdr->ramdisk_image);
657 print_num("Ramdisk size", hdr->ramdisk_size);
658 print_num("Bootsect kludge", hdr->bootsect_kludge);
659 print_num("Heap end ptr", hdr->heap_end_ptr);
660 print_num("Ext loader ver", hdr->ext_loader_ver);
661 print_num("Ext loader type", hdr->ext_loader_type);
662 print_num("Command line ptr", hdr->cmd_line_ptr);
663 if (hdr->cmd_line_ptr) {
664 printf(" ");
665 /* Use puts() to avoid limits from CONFIG_SYS_PBSIZE */
666 puts((char *)(ulong)hdr->cmd_line_ptr);
667 printf("\n");
668 }
669 print_num("Initrd addr max", hdr->initrd_addr_max);
670 print_num("Kernel alignment", hdr->kernel_alignment);
671 print_num("Relocatable kernel", hdr->relocatable_kernel);
672 print_num("Min alignment", hdr->min_alignment);
673 if (hdr->min_alignment)
674 printf("%-20s: %x\n", "", 1 << hdr->min_alignment);
675 print_num("Xload flags", hdr->xloadflags);
676 print_flags(xload_flags, ARRAY_SIZE(xload_flags), hdr->xloadflags);
677 print_num("Cmdline size", hdr->cmdline_size);
678 print_num("Hardware subarch", hdr->hardware_subarch);
679 print_num64("HW subarch data", hdr->hardware_subarch_data);
680 print_num("Payload offset", hdr->payload_offset);
681 print_num("Payload length", hdr->payload_length);
682 print_num64("Setup data", hdr->setup_data);
683 print_num64("Pref address", hdr->pref_address);
684 print_num("Init size", hdr->init_size);
685 print_num("Handover offset", hdr->handover_offset);
686 if (get_boot_protocol(hdr, false) >= 0x215)
687 print_num("Kernel info offset", hdr->kernel_info_offset);
688 }
689
do_zboot_dump(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])690 static int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc,
691 char *const argv[])
692 {
693 struct boot_params *base_ptr = state.base_ptr;
694
695 if (argc > 1)
696 base_ptr = (void *)simple_strtoul(argv[1], NULL, 16);
697 if (!base_ptr) {
698 printf("No zboot setup_base\n");
699 return CMD_RET_FAILURE;
700 }
701 zimage_dump(base_ptr);
702
703 return 0;
704 }
705
706 /* Note: This defines the complete_zboot() function */
707 U_BOOT_SUBCMDS(zboot,
708 U_BOOT_CMD_MKENT(start, 8, 1, do_zboot_start, "", ""),
709 U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""),
710 U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
711 U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
712 U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
713 U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""),
714 )
715
do_zboot_states(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[],int state_mask)716 int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc,
717 char *const argv[], int state_mask)
718 {
719 int i;
720
721 for (i = 0; i < ZBOOT_STATE_COUNT; i++) {
722 struct cmd_tbl *cmd = &zboot_subcmds[i];
723 int mask = 1 << i;
724 int ret;
725
726 if (mask & state_mask) {
727 ret = cmd->cmd(cmd, flag, argc, argv);
728 if (ret)
729 return ret;
730 }
731 }
732
733 return 0;
734 }
735
do_zboot_parent(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[],int * repeatable)736 int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
737 char *const argv[], int *repeatable)
738 {
739 /* determine if we have a sub command */
740 if (argc > 1) {
741 char *endp;
742
743 simple_strtoul(argv[1], &endp, 16);
744 /*
745 * endp pointing to nul means that argv[1] was just a valid
746 * number, so pass it along to the normal processing
747 */
748 if (*endp)
749 return do_zboot(cmdtp, flag, argc, argv, repeatable);
750 }
751
752 do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START |
753 ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP |
754 ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
755
756 return CMD_RET_FAILURE;
757 }
758
759 U_BOOT_CMDREP_COMPLETE(
760 zboot, 8, do_zboot_parent, "Boot bzImage",
761 "[addr] [size] [initrd addr] [initrd size] [setup] [cmdline]\n"
762 " addr - The optional starting address of the bzimage.\n"
763 " If not set it defaults to the environment\n"
764 " variable \"fileaddr\".\n"
765 " size - The optional size of the bzimage. Defaults to\n"
766 " zero.\n"
767 " initrd addr - The address of the initrd image to use, if any.\n"
768 " initrd size - The size of the initrd image to use, if any.\n"
769 " setup - The address of the kernel setup region, if this\n"
770 " is not at addr\n"
771 " cmdline - Environment variable containing the kernel\n"
772 " command line, to override U-Boot's normal\n"
773 " cmdline generation\n"
774 "\n"
775 "Sub-commands to do part of the zboot sequence:\n"
776 "\tstart [addr [arg ...]] - specify arguments\n"
777 "\tload - load OS image\n"
778 "\tsetup - set up table\n"
779 "\tinfo - show summary info\n"
780 "\tgo - start OS\n"
781 "\tdump [addr] - dump info (optional address of boot params)",
782 complete_zboot
783 );
784