include/bootstage.h

   1 /*
   2  * This file implements recording of each stage of the boot process. It is
   3  * intended to implement timing of each stage, reporting this information
   4  * to the user and passing it to the OS for logging / further analysis.
   5  * Note that it requires timer_get_boot_us() to be defined by the board
   6  *
   7  * Copyright (c) 2011 The Chromium OS Authors.
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #ifndef _BOOTSTAGE_H
  13 #define _BOOTSTAGE_H
  14
  15 /* Flags for each bootstage record */
  16 enum bootstage_flags {
  17         BOOTSTAGEF_ERROR        = 1 << 0,       /* Error record */
  18         BOOTSTAGEF_ALLOC        = 1 << 1,       /* Allocate an id */
  19 };
  20
  21 /* bootstate sub-IDs used for kernel and ramdisk ranges */
  22 enum {
  23         BOOTSTAGE_SUB_FORMAT,
  24         BOOTSTAGE_SUB_FORMAT_OK,
  25         BOOTSTAGE_SUB_NO_UNIT_NAME,
  26         BOOTSTAGE_SUB_UNIT_NAME,
  27         BOOTSTAGE_SUB_SUBNODE,
  28
  29         BOOTSTAGE_SUB_CHECK,
  30         BOOTSTAGE_SUB_HASH = 5,
  31         BOOTSTAGE_SUB_CHECK_ARCH = 5,
  32         BOOTSTAGE_SUB_CHECK_ALL,
  33         BOOTSTAGE_SUB_GET_DATA,
  34         BOOTSTAGE_SUB_CHECK_ALL_OK = 7,
  35         BOOTSTAGE_SUB_GET_DATA_OK,
  36         BOOTSTAGE_SUB_LOAD,
  37 };
  38
  39 /*
  40  * A list of boot stages that we know about. Each of these indicates the
  41  * state that we are at, and the action that we are about to perform. For
  42  * errors, we issue an error for an item when it fails. Therefore the
  43  * normal sequence is:
  44  *
  45  * progress action1
  46  * progress action2
  47  * progress action3
  48  *
  49  * and an error condition where action 3 failed would be:
  50  *
  51  * progress action1
  52  * progress action2
  53  * progress action3
  54  * error on action3
  55  */
  56 enum bootstage_id {
  57         BOOTSTAGE_ID_START = 0,
  58         BOOTSTAGE_ID_CHECK_MAGIC,       /* Checking image magic */
  59         BOOTSTAGE_ID_CHECK_HEADER,      /* Checking image header */
  60         BOOTSTAGE_ID_CHECK_CHECKSUM,    /* Checking image checksum */
  61         BOOTSTAGE_ID_CHECK_ARCH,        /* Checking architecture */
  62
  63         BOOTSTAGE_ID_CHECK_IMAGETYPE = 5,/* Checking image type */
  64         BOOTSTAGE_ID_DECOMP_IMAGE,      /* Decompressing image */
  65         BOOTSTAGE_ID_KERNEL_LOADED,     /* Kernel has been loaded */
  66         BOOTSTAGE_ID_DECOMP_UNIMPL = 7, /* Odd decompression algorithm */
  67         BOOTSTAGE_ID_CHECK_BOOT_OS,     /* Calling OS-specific boot function */
  68         BOOTSTAGE_ID_BOOT_OS_RETURNED,  /* Tried to boot OS, but it returned */
  69         BOOTSTAGE_ID_CHECK_RAMDISK = 9, /* Checking ram disk */
  70
  71         BOOTSTAGE_ID_RD_MAGIC,          /* Checking ram disk magic */
  72         BOOTSTAGE_ID_RD_HDR_CHECKSUM,   /* Checking ram disk heder checksum */
  73         BOOTSTAGE_ID_RD_CHECKSUM,       /* Checking ram disk checksum */
  74         BOOTSTAGE_ID_COPY_RAMDISK = 12, /* Copying ram disk into place */
  75         BOOTSTAGE_ID_RAMDISK,           /* Checking for valid ramdisk */
  76         BOOTSTAGE_ID_NO_RAMDISK,        /* No ram disk found (not an error) */
  77
  78         BOOTSTAGE_ID_RUN_OS     = 15,   /* Exiting U-Boot, entering OS */
  79
  80         BOOTSTAGE_ID_NEED_RESET = 30,
  81         BOOTSTAGE_ID_POST_FAIL,         /* Post failure */
  82         BOOTSTAGE_ID_POST_FAIL_R,       /* Post failure reported after reloc */
  83
  84         /*
  85          * This set is reported only by x86, and the meaning is different. In
  86          * this case we are reporting completion of a particular stage.
  87          * This should probably change in the x86 code (which doesn't report
  88          * errors in any case), but discussion this can perhaps wait until we
  89          * have a generic board implementation.
  90          */
  91         BOOTSTAGE_ID_BOARD_INIT_R,      /* We have relocated */
  92         BOOTSTAGE_ID_BOARD_GLOBAL_DATA, /* Global data is set up */
  93
  94         BOOTSTAGE_ID_BOARD_INIT_SEQ,    /* We completed the init sequence */
  95         BOOTSTAGE_ID_BOARD_FLASH,       /* We have configured flash banks */
  96         BOOTSTAGE_ID_BOARD_FLASH_37,    /* In case you didn't hear... */
  97         BOOTSTAGE_ID_BOARD_ENV,         /* Environment is relocated & ready */
  98         BOOTSTAGE_ID_BOARD_PCI,         /* PCI is up */
  99
 100         BOOTSTAGE_ID_BOARD_INTERRUPTS,  /* Exceptions / interrupts ready */
 101         BOOTSTAGE_ID_BOARD_DONE,        /* Board init done, off to main loop */
 102         /* ^^^ here ends the x86 sequence */
 103
 104         /* Boot stages related to loading a kernel from an IDE device */
 105         BOOTSTAGE_ID_IDE_START = 41,
 106         BOOTSTAGE_ID_IDE_ADDR,
 107         BOOTSTAGE_ID_IDE_BOOT_DEVICE,
 108         BOOTSTAGE_ID_IDE_TYPE,
 109
 110         BOOTSTAGE_ID_IDE_PART,
 111         BOOTSTAGE_ID_IDE_PART_INFO,
 112         BOOTSTAGE_ID_IDE_PART_TYPE,
 113         BOOTSTAGE_ID_IDE_PART_READ,
 114         BOOTSTAGE_ID_IDE_FORMAT,
 115
 116         BOOTSTAGE_ID_IDE_CHECKSUM,      /* 50 */
 117         BOOTSTAGE_ID_IDE_READ,
 118
 119         /* Boot stages related to loading a kernel from an NAND device */
 120         BOOTSTAGE_ID_NAND_PART,
 121         BOOTSTAGE_ID_NAND_SUFFIX,
 122         BOOTSTAGE_ID_NAND_BOOT_DEVICE,
 123         BOOTSTAGE_ID_NAND_HDR_READ = 55,
 124         BOOTSTAGE_ID_NAND_AVAILABLE = 55,
 125         BOOTSTAGE_ID_NAND_TYPE = 57,
 126         BOOTSTAGE_ID_NAND_READ,
 127
 128         /* Boot stages related to loading a kernel from an network device */
 129         BOOTSTAGE_ID_NET_CHECKSUM = 60,
 130         BOOTSTAGE_ID_NET_ETH_START = 64,
 131         BOOTSTAGE_ID_NET_ETH_INIT,
 132
 133         BOOTSTAGE_ID_NET_START = 80,
 134         BOOTSTAGE_ID_NET_NETLOOP_OK,
 135         BOOTSTAGE_ID_NET_LOADED,
 136         BOOTSTAGE_ID_NET_DONE_ERR,
 137         BOOTSTAGE_ID_NET_DONE,
 138
 139         BOOTSTAGE_ID_FIT_FDT_START = 90,
 140         /*
 141          * Boot stages related to loading a FIT image. Some of these are a
 142          * bit wonky.
 143          */
 144         BOOTSTAGE_ID_FIT_KERNEL_START = 100,
 145
 146         BOOTSTAGE_ID_FIT_CONFIG = 110,
 147         BOOTSTAGE_ID_FIT_TYPE,
 148         BOOTSTAGE_ID_FIT_KERNEL_INFO,
 149
 150         BOOTSTAGE_ID_FIT_COMPRESSION,
 151         BOOTSTAGE_ID_FIT_OS,
 152         BOOTSTAGE_ID_FIT_LOADADDR,
 153         BOOTSTAGE_ID_OVERWRITTEN,
 154
 155         /* Next 10 IDs used by BOOTSTAGE_SUB_... */
 156         BOOTSTAGE_ID_FIT_RD_START = 120,        /* Ramdisk stages */
 157
 158         /* Next 10 IDs used by BOOTSTAGE_SUB_... */
 159         BOOTSTAGE_ID_FIT_SETUP_START = 130,     /* x86 setup stages */
 160
 161         BOOTSTAGE_ID_IDE_FIT_READ = 140,
 162         BOOTSTAGE_ID_IDE_FIT_READ_OK,
 163
 164         BOOTSTAGE_ID_NAND_FIT_READ = 150,
 165         BOOTSTAGE_ID_NAND_FIT_READ_OK,
 166
 167         BOOTSTAGE_ID_FIT_LOADABLE_START = 160,  /* for Loadable Images */
 168         /*
 169          * These boot stages are new, higher level, and not directly related
 170          * to the old boot progress numbers. They are useful for recording
 171          * rough boot timing information.
 172          */
 173         BOOTSTAGE_ID_AWAKE,
 174         BOOTSTAGE_ID_START_SPL,
 175         BOOTSTAGE_ID_END_SPL,
 176         BOOTSTAGE_ID_START_UBOOT_F,
 177         BOOTSTAGE_ID_START_UBOOT_R,
 178         BOOTSTAGE_ID_USB_START,
 179         BOOTSTAGE_ID_ETH_START,
 180         BOOTSTAGE_ID_BOOTP_START,
 181         BOOTSTAGE_ID_BOOTP_STOP,
 182         BOOTSTAGE_ID_BOOTM_START,
 183         BOOTSTAGE_ID_BOOTM_HANDOFF,
 184         BOOTSTAGE_ID_MAIN_LOOP,
 185         BOOTSTAGE_KERNELREAD_START,
 186         BOOTSTAGE_KERNELREAD_STOP,
 187         BOOTSTAGE_ID_BOARD_INIT,
 188         BOOTSTAGE_ID_BOARD_INIT_DONE,
 189
 190         BOOTSTAGE_ID_CPU_AWAKE,
 191         BOOTSTAGE_ID_MAIN_CPU_AWAKE,
 192         BOOTSTAGE_ID_MAIN_CPU_READY,
 193
 194         BOOTSTAGE_ID_ACCUM_LCD,
 195         BOOTSTAGE_ID_ACCUM_SCSI,
 196         BOOTSTAGE_ID_ACCUM_SPI,
 197         BOOTSTAGE_ID_ACCUM_DECOMP,
 198         BOOTSTAGE_ID_ACCUM_OF_LIVE,
 199         BOOTSTAGE_ID_FPGA_INIT,
 200         BOOTSTATE_ID_ACCUM_DM_SPL,
 201         BOOTSTATE_ID_ACCUM_DM_F,
 202         BOOTSTATE_ID_ACCUM_DM_R,
 203
 204         /* a few spare for the user, from here */
 205         BOOTSTAGE_ID_USER,
 206         BOOTSTAGE_ID_ALLOC,
 207 };
 208
 209 /*
 210  * Return the time since boot in microseconds, This is needed for bootstage
 211  * and should be defined in CPU- or board-specific code. If undefined then
 212  * you will get a link error.
 213  */
 214 ulong timer_get_boot_us(void);
 215
 216 #if defined(USE_HOSTCC)
 217 #define show_boot_progress(val) do {} while (0)
 218 #else
 219 /**
 220  * Board code can implement show_boot_progress() if needed.
 221  *
 222  * @param val   Progress state (enum bootstage_id), or -id if an error
 223  *              has occurred.
 224  */
 225 void show_boot_progress(int val);
 226 #endif
 227
 228 #if !defined(USE_HOSTCC)
 229 #if CONFIG_IS_ENABLED(BOOTSTAGE)
 230 #define ENABLE_BOOTSTAGE
 231 #endif
 232 #endif
 233
 234 #ifdef ENABLE_BOOTSTAGE
 235
 236 /* This is the full bootstage implementation */
 237
 238 /**
 239  * Relocate existing bootstage records
 240  *
 241  * Call this after relocation has happened and after malloc has been initted.
 242  * We need to copy any pointers in bootstage records that were added pre-
 243  * relocation, since memory can be overwritten later.
 244  * @return Always returns 0, to indicate success
 245  */
 246 int bootstage_relocate(void);
 247
 248 /**
 249  * Add a new bootstage record
 250  *
 251  * @param id    Bootstage ID to use (ignored if flags & BOOTSTAGEF_ALLOC)
 252  * @param name  Name of record, or NULL for none
 253  * @param flags Flags (BOOTSTAGEF_...)
 254  * @param mark  Time to record in this record, in microseconds
 255  */
 256 ulong bootstage_add_record(enum bootstage_id id, const char *name,
 257                            int flags, ulong mark);
 258
 259 /**
 260  * Mark a time stamp for the current boot stage.
 261  */
 262 ulong bootstage_mark(enum bootstage_id id);
 263
 264 ulong bootstage_error(enum bootstage_id id);
 265
 266 ulong bootstage_mark_name(enum bootstage_id id, const char *name);
 267
 268 /**
 269  * Mark a time stamp in the given function and line number
 270  *
 271  * See BOOTSTAGE_MARKER() for a convenient macro.
 272  *
 273  * @param file          Filename to record (NULL if none)
 274  * @param func          Function name to record
 275  * @param linenum       Line number to record
 276  * @return recorded time stamp
 277  */
 278 ulong bootstage_mark_code(const char *file, const char *func,
 279                           int linenum);
 280
 281 /**
 282  * Mark the start of a bootstage activity. The end will be marked later with
 283  * bootstage_accum() and at that point we accumulate the time taken. Calling
 284  * this function turns the given id into a accumulator rather than and
 285  * absolute mark in time. Accumulators record the total amount of time spent
 286  * in an activty during boot.
 287  *
 288  * @param id    Bootstage id to record this timestamp against
 289  * @param name  Textual name to display for this id in the report (maybe NULL)
 290  * @return start timestamp in microseconds
 291  */
 292 uint32_t bootstage_start(enum bootstage_id id, const char *name);
 293
 294 /**
 295  * Mark the end of a bootstage activity
 296  *
 297  * After previously marking the start of an activity with bootstage_start(),
 298  * call this function to mark the end. You can call these functions in pairs
 299  * as many times as you like.
 300  *
 301  * @param id    Bootstage id to record this timestamp against
 302  * @return time spent in this iteration of the activity (i.e. the time now
 303  *              less the start time recorded in the last bootstage_start() call
 304  *              with this id.
 305  */
 306 uint32_t bootstage_accum(enum bootstage_id id);
 307
 308 /* Print a report about boot time */
 309 void bootstage_report(void);
 310
 311 /**
 312  * Add bootstage information to the device tree
 313  *
 314  * @return 0 if ok, -ve on error
 315  */
 316 int bootstage_fdt_add_report(void);
 317
 318 /**
 319  * Stash bootstage data into memory
 320  *
 321  * @param base  Base address of memory buffer
 322  * @param size  Size of memory buffer
 323  * @return 0 if stashed ok, -1 if out of space
 324  */
 325 int bootstage_stash(void *base, int size);
 326
 327 /**
 328  * Read bootstage data from memory
 329  *
 330  * Bootstage data is read from memory and placed in the bootstage table
 331  * in the user records.
 332  *
 333  * @param base  Base address of memory buffer
 334  * @param size  Size of memory buffer (-1 if unknown)
 335  * @return 0 if unstashed ok, -ENOENT if bootstage info not found, -ENOSPC if
 336  *      there is not space for read the stacked data, or other error if
 337  *      something else went wrong
 338  */
 339 int bootstage_unstash(const void *base, int size);
 340
 341 /**
 342  * bootstage_get_size() - Get the size of the bootstage data
 343  *
 344  * @return size of boostage data in bytes
 345  */
 346 int bootstage_get_size(void);
 347
 348 /**
 349  * bootstage_init() - Prepare bootstage for use
 350  *
 351  * @first: true if this is the first time bootstage is set up. This causes it
 352  *      to add a 'reset' record with a time of 0.
 353  */
 354 int bootstage_init(bool first);
 355
 356 #else
 357 static inline ulong bootstage_add_record(enum bootstage_id id,
 358                 const char *name, int flags, ulong mark)
 359 {
 360         return 0;
 361 }
 362
 363 /*
 364  * This is a dummy implementation which just calls show_boot_progress(),
 365  * and won't even do that unless CONFIG_SHOW_BOOT_PROGRESS is defined
 366  */
 367
 368 static inline int bootstage_relocate(void)
 369 {
 370         return 0;
 371 }
 372
 373 static inline ulong bootstage_mark(enum bootstage_id id)
 374 {
 375         show_boot_progress(id);
 376         return 0;
 377 }
 378
 379 static inline ulong bootstage_error(enum bootstage_id id)
 380 {
 381         show_boot_progress(-id);
 382         return 0;
 383 }
 384
 385 static inline ulong bootstage_mark_name(enum bootstage_id id, const char *name)
 386 {
 387         show_boot_progress(id);
 388         return 0;
 389 }
 390
 391 static inline ulong bootstage_mark_code(const char *file, const char *func,
 392                                         int linenum)
 393 {
 394         return 0;
 395 }
 396
 397 static inline uint32_t bootstage_start(enum bootstage_id id, const char *name)
 398 {
 399         return 0;
 400 }
 401
 402 static inline uint32_t bootstage_accum(enum bootstage_id id)
 403 {
 404         return 0;
 405 }
 406
 407 static inline int bootstage_stash(void *base, int size)
 408 {
 409         return 0;       /* Pretend to succeed */
 410 }
 411
 412 static inline int bootstage_unstash(const void *base, int size)
 413 {
 414         return 0;       /* Pretend to succeed */
 415 }
 416
 417 static inline int bootstage_get_size(void)
 418 {
 419         return 0;
 420 }
 421
 422 static inline int bootstage_init(bool first)
 423 {
 424         return 0;
 425 }
 426
 427 #endif /* ENABLE_BOOTSTAGE */
 428
 429 /* Helper macro for adding a bootstage to a line of code */
 430 #define BOOTSTAGE_MARKER()      \
 431                 bootstage_mark_code(__FILE__, __func__, __LINE__)
 432
 433 #endif