1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * This file implements recording of each stage of the boot process. It is
4 * intended to implement timing of each stage, reporting this information
5 * to the user and passing it to the OS for logging / further analysis.
6 * Note that it requires timer_get_boot_us() to be defined by the board
8 * Copyright (c) 2011 The Chromium OS Authors.
14 #include <linux/types.h>
15 #include <linux/kconfig.h>
17 /* Flags for each bootstage record */
18 enum bootstage_flags {
19 BOOTSTAGEF_ERROR = 1 << 0, /* Error record */
20 BOOTSTAGEF_ALLOC = 1 << 1, /* Allocate an id */
23 /* bootstate sub-IDs used for kernel and ramdisk ranges */
26 BOOTSTAGE_SUB_FORMAT_OK,
27 BOOTSTAGE_SUB_NO_UNIT_NAME,
28 BOOTSTAGE_SUB_UNIT_NAME,
29 BOOTSTAGE_SUB_SUBNODE,
32 BOOTSTAGE_SUB_HASH = 5,
33 BOOTSTAGE_SUB_CHECK_ARCH = 5,
34 BOOTSTAGE_SUB_CHECK_ALL,
35 BOOTSTAGE_SUB_GET_DATA,
36 BOOTSTAGE_SUB_CHECK_ALL_OK = 7,
37 BOOTSTAGE_SUB_GET_DATA_OK,
42 * A list of boot stages that we know about. Each of these indicates the
43 * state that we are at, and the action that we are about to perform. For
44 * errors, we issue an error for an item when it fails. Therefore the
51 * and an error condition where action 3 failed would be:
59 BOOTSTAGE_ID_START = 0,
60 BOOTSTAGE_ID_CHECK_MAGIC, /* Checking image magic */
61 BOOTSTAGE_ID_CHECK_HEADER, /* Checking image header */
62 BOOTSTAGE_ID_CHECK_CHECKSUM, /* Checking image checksum */
63 BOOTSTAGE_ID_CHECK_ARCH, /* Checking architecture */
65 BOOTSTAGE_ID_CHECK_IMAGETYPE = 5,/* Checking image type */
66 BOOTSTAGE_ID_DECOMP_IMAGE, /* Decompressing image */
67 BOOTSTAGE_ID_KERNEL_LOADED, /* Kernel has been loaded */
68 BOOTSTAGE_ID_DECOMP_UNIMPL = 7, /* Odd decompression algorithm */
69 BOOTSTAGE_ID_CHECK_BOOT_OS, /* Calling OS-specific boot function */
70 BOOTSTAGE_ID_BOOT_OS_RETURNED, /* Tried to boot OS, but it returned */
71 BOOTSTAGE_ID_CHECK_RAMDISK = 9, /* Checking ram disk */
73 BOOTSTAGE_ID_RD_MAGIC, /* Checking ram disk magic */
74 BOOTSTAGE_ID_RD_HDR_CHECKSUM, /* Checking ram disk heder checksum */
75 BOOTSTAGE_ID_RD_CHECKSUM, /* Checking ram disk checksum */
76 BOOTSTAGE_ID_COPY_RAMDISK = 12, /* Copying ram disk into place */
77 BOOTSTAGE_ID_RAMDISK, /* Checking for valid ramdisk */
78 BOOTSTAGE_ID_NO_RAMDISK, /* No ram disk found (not an error) */
80 BOOTSTAGE_ID_RUN_OS = 15, /* Exiting U-Boot, entering OS */
82 BOOTSTAGE_ID_NEED_RESET = 30,
83 BOOTSTAGE_ID_POST_FAIL, /* Post failure */
84 BOOTSTAGE_ID_POST_FAIL_R, /* Post failure reported after reloc */
87 * This set is reported only by x86, and the meaning is different. In
88 * this case we are reporting completion of a particular stage.
89 * This should probably change in the x86 code (which doesn't report
90 * errors in any case), but discussion this can perhaps wait until we
91 * have a generic board implementation.
93 BOOTSTAGE_ID_BOARD_INIT_R, /* We have relocated */
94 BOOTSTAGE_ID_BOARD_GLOBAL_DATA, /* Global data is set up */
96 BOOTSTAGE_ID_BOARD_INIT_SEQ, /* We completed the init sequence */
97 BOOTSTAGE_ID_BOARD_FLASH, /* We have configured flash banks */
98 BOOTSTAGE_ID_BOARD_FLASH_37, /* In case you didn't hear... */
99 BOOTSTAGE_ID_BOARD_ENV, /* Environment is relocated & ready */
100 BOOTSTAGE_ID_BOARD_PCI, /* PCI is up */
102 BOOTSTAGE_ID_BOARD_INTERRUPTS, /* Exceptions / interrupts ready */
103 BOOTSTAGE_ID_BOARD_DONE, /* Board init done, off to main loop */
104 /* ^^^ here ends the x86 sequence */
106 /* Boot stages related to loading a kernel from an IDE device */
107 BOOTSTAGE_ID_IDE_START = 41,
108 BOOTSTAGE_ID_IDE_ADDR,
109 BOOTSTAGE_ID_IDE_BOOT_DEVICE,
110 BOOTSTAGE_ID_IDE_TYPE,
112 BOOTSTAGE_ID_IDE_PART,
113 BOOTSTAGE_ID_IDE_PART_INFO,
114 BOOTSTAGE_ID_IDE_PART_TYPE,
115 BOOTSTAGE_ID_IDE_PART_READ,
116 BOOTSTAGE_ID_IDE_FORMAT,
118 BOOTSTAGE_ID_IDE_CHECKSUM, /* 50 */
119 BOOTSTAGE_ID_IDE_READ,
121 /* Boot stages related to loading a kernel from an NAND device */
122 BOOTSTAGE_ID_NAND_PART,
123 BOOTSTAGE_ID_NAND_SUFFIX,
124 BOOTSTAGE_ID_NAND_BOOT_DEVICE,
125 BOOTSTAGE_ID_NAND_HDR_READ = 55,
126 BOOTSTAGE_ID_NAND_AVAILABLE = 55,
127 BOOTSTAGE_ID_NAND_TYPE = 57,
128 BOOTSTAGE_ID_NAND_READ,
130 /* Boot stages related to loading a kernel from an network device */
131 BOOTSTAGE_ID_NET_CHECKSUM = 60,
132 BOOTSTAGE_ID_NET_ETH_START = 64,
133 BOOTSTAGE_ID_NET_ETH_INIT,
135 BOOTSTAGE_ID_NET_START = 80,
136 BOOTSTAGE_ID_NET_NETLOOP_OK,
137 BOOTSTAGE_ID_NET_LOADED,
138 BOOTSTAGE_ID_NET_DONE_ERR,
139 BOOTSTAGE_ID_NET_DONE,
141 BOOTSTAGE_ID_FIT_FDT_START = 90,
143 * Boot stages related to loading a FIT image. Some of these are a
146 BOOTSTAGE_ID_FIT_KERNEL_START = 100,
148 BOOTSTAGE_ID_FIT_CONFIG = 110,
149 BOOTSTAGE_ID_FIT_TYPE,
151 BOOTSTAGE_ID_FIT_COMPRESSION,
153 BOOTSTAGE_ID_FIT_LOADADDR,
154 BOOTSTAGE_ID_OVERWRITTEN,
156 /* Next 10 IDs used by BOOTSTAGE_SUB_... */
157 BOOTSTAGE_ID_FIT_RD_START = 120, /* Ramdisk stages */
159 /* Next 10 IDs used by BOOTSTAGE_SUB_... */
160 BOOTSTAGE_ID_FIT_SETUP_START = 130, /* x86 setup stages */
162 BOOTSTAGE_ID_IDE_FIT_READ = 140,
163 BOOTSTAGE_ID_IDE_FIT_READ_OK,
165 BOOTSTAGE_ID_NAND_FIT_READ = 150,
166 BOOTSTAGE_ID_NAND_FIT_READ_OK,
168 BOOTSTAGE_ID_FIT_LOADABLE_START = 160, /* for Loadable Images */
170 BOOTSTAGE_ID_FIT_SPL_START = 170, /* for SPL Images */
172 * These boot stages are new, higher level, and not directly related
173 * to the old boot progress numbers. They are useful for recording
174 * rough boot timing information.
177 BOOTSTAGE_ID_START_TPL,
178 BOOTSTAGE_ID_END_TPL,
179 BOOTSTAGE_ID_START_SPL,
180 BOOTSTAGE_ID_END_SPL,
181 BOOTSTAGE_ID_START_VPL,
182 BOOTSTAGE_ID_END_VPL,
183 BOOTSTAGE_ID_START_UBOOT_F,
184 BOOTSTAGE_ID_START_UBOOT_R,
185 BOOTSTAGE_ID_USB_START,
186 BOOTSTAGE_ID_ETH_START,
187 BOOTSTAGE_ID_BOOTP_START,
188 BOOTSTAGE_ID_BOOTP_STOP,
189 BOOTSTAGE_ID_BOOTM_START,
190 BOOTSTAGE_ID_BOOTM_HANDOFF,
191 BOOTSTAGE_ID_MAIN_LOOP,
192 BOOTSTAGE_ID_ENTER_CLI_LOOP,
193 BOOTSTAGE_KERNELREAD_START,
194 BOOTSTAGE_KERNELREAD_STOP,
195 BOOTSTAGE_ID_BOARD_INIT,
196 BOOTSTAGE_ID_BOARD_INIT_DONE,
198 BOOTSTAGE_ID_CPU_AWAKE,
199 BOOTSTAGE_ID_MAIN_CPU_AWAKE,
200 BOOTSTAGE_ID_MAIN_CPU_READY,
202 BOOTSTAGE_ID_ACCUM_LCD,
203 BOOTSTAGE_ID_ACCUM_SCSI,
204 BOOTSTAGE_ID_ACCUM_SPI,
205 BOOTSTAGE_ID_ACCUM_DECOMP,
206 BOOTSTAGE_ID_ACCUM_OF_LIVE,
207 BOOTSTAGE_ID_FPGA_INIT,
208 BOOTSTAGE_ID_ACCUM_DM_SPL,
209 BOOTSTAGE_ID_ACCUM_DM_F,
210 BOOTSTAGE_ID_ACCUM_DM_R,
211 BOOTSTAGE_ID_ACCUM_FSP_M,
212 BOOTSTAGE_ID_ACCUM_FSP_S,
213 BOOTSTAGE_ID_ACCUM_MMAP_SPI,
215 /* a few spare for the user, from here */
221 * Return the time since boot in microseconds, This is needed for bootstage
222 * and should be defined in CPU- or board-specific code. If undefined then
223 * you will get a link error.
225 ulong timer_get_boot_us(void);
227 #if defined(USE_HOSTCC) || !CONFIG_IS_ENABLED(SHOW_BOOT_PROGRESS)
228 #define show_boot_progress(val) do {} while (0)
231 * Board code can implement show_boot_progress() if needed.
233 * @param val Progress state (enum bootstage_id), or -id if an error
236 void show_boot_progress(int val);
239 #if !defined(USE_HOSTCC)
240 #if CONFIG_IS_ENABLED(BOOTSTAGE)
241 #define ENABLE_BOOTSTAGE
245 #ifdef ENABLE_BOOTSTAGE
249 /* This is the full bootstage implementation */
252 * Relocate existing bootstage records
254 * Call this after relocation has happened and after malloc has been initted.
255 * We need to copy any pointers in bootstage records that were added pre-
256 * relocation, since memory can be overwritten later.
257 * Return: Always returns 0, to indicate success
259 int bootstage_relocate(void);
262 * Add a new bootstage record
264 * @param id Bootstage ID to use (ignored if flags & BOOTSTAGEF_ALLOC)
265 * @param name Name of record, or NULL for none
266 * @param flags Flags (BOOTSTAGEF_...)
267 * @param mark Time to record in this record, in microseconds
269 ulong bootstage_add_record(enum bootstage_id id, const char *name,
270 int flags, ulong mark);
273 * Mark a time stamp for the current boot stage.
275 #define bootstage_mark(id) bootstage_mark_name(id, __func__)
276 #define bootstage_error(id) bootstage_error_name(id, __func__)
279 * bootstage_mark_name - record bootstage with passing id and name
280 * @id: Bootstage id to record this timestamp against
281 * @name: Textual name to display for this id in the report
283 * Return: recorded time stamp
285 ulong bootstage_mark_name(enum bootstage_id id, const char *name);
288 * bootstage_error_name - record bootstage error with passing id and name
289 * @id: Bootstage id to record this timestamp against
290 * @name: Textual name to display for this id in the report
292 * Return: recorded time stamp
294 ulong bootstage_error_name(enum bootstage_id id, const char *name);
297 * Mark a time stamp in the given function and line number
299 * See BOOTSTAGE_MARKER() for a convenient macro.
301 * @param file Filename to record (NULL if none)
302 * @param func Function name to record
303 * @param linenum Line number to record
304 * Return: recorded time stamp
306 ulong bootstage_mark_code(const char *file, const char *func,
310 * Mark the start of a bootstage activity. The end will be marked later with
311 * bootstage_accum() and at that point we accumulate the time taken. Calling
312 * this function turns the given id into a accumulator rather than and
313 * absolute mark in time. Accumulators record the total amount of time spent
314 * in an activty during boot.
316 * @param id Bootstage id to record this timestamp against
317 * @param name Textual name to display for this id in the report (maybe NULL)
318 * Return: start timestamp in microseconds
320 uint32_t bootstage_start(enum bootstage_id id, const char *name);
323 * Mark the end of a bootstage activity
325 * After previously marking the start of an activity with bootstage_start(),
326 * call this function to mark the end. You can call these functions in pairs
327 * as many times as you like.
329 * @param id Bootstage id to record this timestamp against
330 * Return: time spent in this iteration of the activity (i.e. the time now
331 * less the start time recorded in the last bootstage_start() call
334 uint32_t bootstage_accum(enum bootstage_id id);
336 /* Print a report about boot time */
337 void bootstage_report(void);
340 * Add bootstage information to the device tree
342 * Return: 0 if ok, -ve on error
344 int bootstage_fdt_add_report(void);
347 * Stash bootstage data into memory
349 * @param base Base address of memory buffer
350 * @param size Size of memory buffer
351 * Return: 0 if stashed ok, -1 if out of space
353 int bootstage_stash(void *base, int size);
356 * Read bootstage data from memory
358 * Bootstage data is read from memory and placed in the bootstage table
359 * in the user records.
361 * @param base Base address of memory buffer
362 * @param size Size of memory buffer (-1 if unknown)
363 * Return: 0 if unstashed ok, -ENOENT if bootstage info not found, -ENOSPC if
364 * there is not space for read the stashed data, or other error if
365 * something else went wrong
367 int bootstage_unstash(const void *base, int size);
370 * bootstage_get_size() - Get the size of the bootstage data
372 * Return: size of boostage data in bytes
374 int bootstage_get_size(void);
377 * bootstage_init() - Prepare bootstage for use
379 * @first: true if this is the first time bootstage is set up. This causes it
380 * to add a 'reset' record with a time of 0.
382 int bootstage_init(bool first);
385 static inline ulong bootstage_add_record(enum bootstage_id id,
386 const char *name, int flags, ulong mark)
392 * This is a dummy implementation which just calls show_boot_progress(),
393 * and won't even do that unless CONFIG_SHOW_BOOT_PROGRESS is defined
396 static inline int bootstage_relocate(void)
401 static inline ulong bootstage_mark(enum bootstage_id id)
403 show_boot_progress(id);
407 static inline ulong bootstage_error(enum bootstage_id id)
409 show_boot_progress(-id);
413 static inline ulong bootstage_mark_name(enum bootstage_id id, const char *name)
415 show_boot_progress(id);
419 static inline ulong bootstage_mark_code(const char *file, const char *func,
425 static inline uint32_t bootstage_start(enum bootstage_id id, const char *name)
430 static inline uint32_t bootstage_accum(enum bootstage_id id)
435 static inline int bootstage_stash(void *base, int size)
437 return 0; /* Pretend to succeed */
440 static inline int bootstage_unstash(const void *base, int size)
442 return 0; /* Pretend to succeed */
445 static inline int bootstage_get_size(void)
450 static inline int bootstage_init(bool first)
455 #endif /* ENABLE_BOOTSTAGE */
457 /* helpers for SPL */
458 int _bootstage_stash_default(void);
459 int _bootstage_unstash_default(void);
461 static inline int bootstage_stash_default(void)
463 if (CONFIG_IS_ENABLED(BOOTSTAGE) && IS_ENABLED(CONFIG_BOOTSTAGE_STASH))
464 return _bootstage_stash_default();
469 static inline int bootstage_unstash_default(void)
471 if (CONFIG_IS_ENABLED(BOOTSTAGE) && IS_ENABLED(CONFIG_BOOTSTAGE_STASH))
472 return _bootstage_unstash_default();
477 /* Helper macro for adding a bootstage to a line of code */
478 #define BOOTSTAGE_MARKER() \
479 bootstage_mark_code(__FILE__, __func__, __LINE__)