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/*
* This file implements recording of each stage of the boot process. It is
* intended to implement timing of each stage, reporting this information
* to the user and passing it to the OS for logging / further analysis.
*
* Copyright (c) 2011 The Chromium OS Authors.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _BOOTSTAGE_H
#define _BOOTSTAGE_H
/* The number of boot stage records available for the user */
#ifndef CONFIG_BOOTSTAGE_USER_COUNT
#define CONFIG_BOOTSTAGE_USER_COUNT 20
#endif
/* Flags for each bootstage record */
enum bootstage_flags {
BOOTSTAGEF_ERROR = 1 << 0, /* Error record */
BOOTSTAGEF_ALLOC = 1 << 1, /* Allocate an id */
};
/* bootstate sub-IDs used for kernel and ramdisk ranges */
enum {
BOOTSTAGE_SUB_FORMAT,
BOOTSTAGE_SUB_FORMAT_OK,
BOOTSTAGE_SUB_NO_UNIT_NAME,
BOOTSTAGE_SUB_UNIT_NAME,
BOOTSTAGE_SUB_SUBNODE,
BOOTSTAGE_SUB_CHECK,
BOOTSTAGE_SUB_HASH = 5,
BOOTSTAGE_SUB_CHECK_ARCH = 5,
BOOTSTAGE_SUB_CHECK_ALL,
BOOTSTAGE_SUB_GET_DATA,
BOOTSTAGE_SUB_CHECK_ALL_OK = 7,
BOOTSTAGE_SUB_GET_DATA_OK,
BOOTSTAGE_SUB_LOAD,
};
/*
* A list of boot stages that we know about. Each of these indicates the
* state that we are at, and the action that we are about to perform. For
* errors, we issue an error for an item when it fails. Therefore the
* normal sequence is:
*
* progress action1
* progress action2
* progress action3
*
* and an error condition where action 3 failed would be:
*
* progress action1
* progress action2
* progress action3
* error on action3
*/
enum bootstage_id {
BOOTSTAGE_ID_START = 0,
BOOTSTAGE_ID_CHECK_MAGIC, /* Checking image magic */
BOOTSTAGE_ID_CHECK_HEADER, /* Checking image header */
BOOTSTAGE_ID_CHECK_CHECKSUM, /* Checking image checksum */
BOOTSTAGE_ID_CHECK_ARCH, /* Checking architecture */
BOOTSTAGE_ID_CHECK_IMAGETYPE = 5,/* Checking image type */
BOOTSTAGE_ID_DECOMP_IMAGE, /* Decompressing image */
BOOTSTAGE_ID_KERNEL_LOADED, /* Kernel has been loaded */
BOOTSTAGE_ID_DECOMP_UNIMPL = 7, /* Odd decompression algorithm */
BOOTSTAGE_ID_CHECK_BOOT_OS, /* Calling OS-specific boot function */
BOOTSTAGE_ID_BOOT_OS_RETURNED, /* Tried to boot OS, but it returned */
BOOTSTAGE_ID_CHECK_RAMDISK = 9, /* Checking ram disk */
BOOTSTAGE_ID_RD_MAGIC, /* Checking ram disk magic */
BOOTSTAGE_ID_RD_HDR_CHECKSUM, /* Checking ram disk heder checksum */
BOOTSTAGE_ID_RD_CHECKSUM, /* Checking ram disk checksum */
BOOTSTAGE_ID_COPY_RAMDISK = 12, /* Copying ram disk into place */
BOOTSTAGE_ID_RAMDISK, /* Checking for valid ramdisk */
BOOTSTAGE_ID_NO_RAMDISK, /* No ram disk found (not an error) */
BOOTSTAGE_ID_RUN_OS = 15, /* Exiting U-Boot, entering OS */
BOOTSTAGE_ID_NEED_RESET = 30,
BOOTSTAGE_ID_POST_FAIL, /* Post failure */
BOOTSTAGE_ID_POST_FAIL_R, /* Post failure reported after reloc */
/*
* This set is reported ony by x86, and the meaning is different. In
* this case we are reporting completion of a particular stage.
* This should probably change in he x86 code (which doesn't report
* errors in any case), but discussion this can perhaps wait until we
* have a generic board implementation.
*/
BOOTSTAGE_ID_BOARD_INIT_R, /* We have relocated */
BOOTSTAGE_ID_BOARD_GLOBAL_DATA, /* Global data is set up */
BOOTSTAGE_ID_BOARD_INIT_SEQ, /* We completed the init sequence */
BOOTSTAGE_ID_BOARD_FLASH, /* We have configured flash banks */
BOOTSTAGE_ID_BOARD_FLASH_37, /* In case you didn't hear... */
BOOTSTAGE_ID_BOARD_ENV, /* Environment is relocated & ready */
BOOTSTAGE_ID_BOARD_PCI, /* PCI is up */
BOOTSTAGE_ID_BOARD_INTERRUPTS, /* Exceptions / interrupts ready */
BOOTSTAGE_ID_BOARD_DONE, /* Board init done, off to main loop */
/* ^^^ here ends the x86 sequence */
/* Boot stages related to loading a kernel from an IDE device */
BOOTSTAGE_ID_IDE_START = 41,
BOOTSTAGE_ID_IDE_ADDR,
BOOTSTAGE_ID_IDE_BOOT_DEVICE,
BOOTSTAGE_ID_IDE_TYPE,
BOOTSTAGE_ID_IDE_PART,
BOOTSTAGE_ID_IDE_PART_INFO,
BOOTSTAGE_ID_IDE_PART_TYPE,
BOOTSTAGE_ID_IDE_PART_READ,
BOOTSTAGE_ID_IDE_FORMAT,
BOOTSTAGE_ID_IDE_CHECKSUM, /* 50 */
BOOTSTAGE_ID_IDE_READ,
/* Boot stages related to loading a kernel from an NAND device */
BOOTSTAGE_ID_NAND_PART,
BOOTSTAGE_ID_NAND_SUFFIX,
BOOTSTAGE_ID_NAND_BOOT_DEVICE,
BOOTSTAGE_ID_NAND_HDR_READ = 55,
BOOTSTAGE_ID_NAND_AVAILABLE = 55,
BOOTSTAGE_ID_NAND_TYPE = 57,
BOOTSTAGE_ID_NAND_READ,
/* Boot stages related to loading a kernel from an network device */
BOOTSTAGE_ID_NET_CHECKSUM = 60,
BOOTSTAGE_ID_NET_ETH_START = 64,
BOOTSTAGE_ID_NET_ETH_INIT,
BOOTSTAGE_ID_NET_START = 80,
BOOTSTAGE_ID_NET_NETLOOP_OK,
BOOTSTAGE_ID_NET_LOADED,
BOOTSTAGE_ID_NET_DONE_ERR,
BOOTSTAGE_ID_NET_DONE,
BOOTSTAGE_ID_FIT_FDT_START = 90,
/*
* Boot stages related to loading a FIT image. Some of these are a
* bit wonky.
*/
BOOTSTAGE_ID_FIT_KERNEL_START = 100,
BOOTSTAGE_ID_FIT_CONFIG = 110,
BOOTSTAGE_ID_FIT_TYPE,
BOOTSTAGE_ID_FIT_KERNEL_INFO,
BOOTSTAGE_ID_FIT_COMPRESSION,
BOOTSTAGE_ID_FIT_OS,
BOOTSTAGE_ID_FIT_LOADADDR,
BOOTSTAGE_ID_OVERWRITTEN,
/* Next 10 IDs used by BOOTSTAGE_SUB_... */
BOOTSTAGE_ID_FIT_RD_START = 120, /* Ramdisk stages */
BOOTSTAGE_ID_IDE_FIT_READ = 140,
BOOTSTAGE_ID_IDE_FIT_READ_OK,
BOOTSTAGE_ID_NAND_FIT_READ = 150,
BOOTSTAGE_ID_NAND_FIT_READ_OK,
/*
* These boot stages are new, higher level, and not directly related
* to the old boot progress numbers. They are useful for recording
* rough boot timing information.
*/
BOOTSTAGE_ID_AWAKE,
BOOTSTAGE_ID_START_SPL,
BOOTSTAGE_ID_START_UBOOT_F,
BOOTSTAGE_ID_START_UBOOT_R,
BOOTSTAGE_ID_USB_START,
BOOTSTAGE_ID_ETH_START,
BOOTSTAGE_ID_BOOTP_START,
BOOTSTAGE_ID_BOOTP_STOP,
BOOTSTAGE_ID_BOOTM_START,
BOOTSTAGE_ID_BOOTM_HANDOFF,
BOOTSTAGE_ID_MAIN_LOOP,
BOOTSTAGE_KERNELREAD_START,
BOOTSTAGE_KERNELREAD_STOP,
BOOTSTAGE_ID_BOARD_INIT,
BOOTSTAGE_ID_BOARD_INIT_DONE,
BOOTSTAGE_ID_CPU_AWAKE,
BOOTSTAGE_ID_MAIN_CPU_AWAKE,
BOOTSTAGE_ID_MAIN_CPU_READY,
BOOTSTAGE_ID_ACCUM_LCD,
/* a few spare for the user, from here */
BOOTSTAGE_ID_USER,
BOOTSTAGE_ID_COUNT = BOOTSTAGE_ID_USER + CONFIG_BOOTSTAGE_USER_COUNT,
BOOTSTAGE_ID_ALLOC,
};
/*
* Return the time since boot in microseconds, This is needed for bootstage
* and should be defined in CPU- or board-specific code. If undefined then
* millisecond resolution will be used (the standard get_timer()).
*/
ulong timer_get_boot_us(void);
#if !defined(CONFIG_SPL_BUILD) && !defined(USE_HOSTCC)
/*
* Board code can implement show_boot_progress() if needed.
*
* @param val Progress state (enum bootstage_id), or -id if an error
* has occurred.
*/
void show_boot_progress(int val);
#else
#define show_boot_progress(val) do {} while (0)
#endif
#if defined(CONFIG_BOOTSTAGE) && !defined(CONFIG_SPL_BUILD) && \
!defined(USE_HOSTCC)
/* This is the full bootstage implementation */
/**
* Relocate existing bootstage records
*
* Call this after relocation has happened and after malloc has been initted.
* We need to copy any pointers in bootstage records that were added pre-
* relocation, since memory can be overritten later.
* @return Always returns 0, to indicate success
*/
int bootstage_relocate(void);
/**
* Add a new bootstage record
*
* @param id Bootstage ID to use (ignored if flags & BOOTSTAGEF_ALLOC)
* @param name Name of record, or NULL for none
* @param flags Flags (BOOTSTAGEF_...)
* @param mark Time to record in this record, in microseconds
*/
ulong bootstage_add_record(enum bootstage_id id, const char *name,
int flags, ulong mark);
/*
* Mark a time stamp for the current boot stage.
*/
ulong bootstage_mark(enum bootstage_id id);
ulong bootstage_error(enum bootstage_id id);
ulong bootstage_mark_name(enum bootstage_id id, const char *name);
/**
* Mark a time stamp in the given function and line number
*
* See BOOTSTAGE_MARKER() for a convenient macro.
*
* @param file Filename to record (NULL if none)
* @param func Function name to record
* @param linenum Line number to record
* @return recorded time stamp
*/
ulong bootstage_mark_code(const char *file, const char *func,
int linenum);
/**
* Mark the start of a bootstage activity. The end will be marked later with
* bootstage_accum() and at that point we accumulate the time taken. Calling
* this function turns the given id into a accumulator rather than and
* absolute mark in time. Accumulators record the total amount of time spent
* in an activty during boot.
*
* @param id Bootstage id to record this timestamp against
* @param name Textual name to display for this id in the report (maybe NULL)
* @return start timestamp in microseconds
*/
uint32_t bootstage_start(enum bootstage_id id, const char *name);
/**
* Mark the end of a bootstage activity
*
* After previously marking the start of an activity with bootstage_start(),
* call this function to mark the end. You can call these functions in pairs
* as many times as you like.
*
* @param id Bootstage id to record this timestamp against
* @return time spent in this iteration of the activity (i.e. the time now
* less the start time recorded in the last bootstage_start() call
* with this id.
*/
uint32_t bootstage_accum(enum bootstage_id id);
/* Print a report about boot time */
void bootstage_report(void);
/**
* Add bootstage information to the device tree
*
* @return 0 if ok, -ve on error
*/
int bootstage_fdt_add_report(void);
/*
* Stash bootstage data into memory
*
* @param base Base address of memory buffer
* @param size Size of memory buffer
* @return 0 if stashed ok, -1 if out of space
*/
int bootstage_stash(void *base, int size);
/**
* Read bootstage data from memory
*
* Bootstage data is read from memory and placed in the bootstage table
* in the user records.
*
* @param base Base address of memory buffer
* @param size Size of memory buffer (-1 if unknown)
* @return 0 if unstashed ok, -1 if bootstage info not found, or out of space
*/
int bootstage_unstash(void *base, int size);
#else
static inline ulong bootstage_add_record(enum bootstage_id id,
const char *name, int flags, ulong mark)
{
return 0;
}
/*
* This is a dummy implementation which just calls show_boot_progress(),
* and won't even do that unless CONFIG_SHOW_BOOT_PROGRESS is defined
*/
static inline int bootstage_relocate(void)
{
return 0;
}
static inline ulong bootstage_mark(enum bootstage_id id)
{
show_boot_progress(id);
return 0;
}
static inline ulong bootstage_error(enum bootstage_id id)
{
show_boot_progress(-id);
return 0;
}
static inline ulong bootstage_mark_name(enum bootstage_id id, const char *name)
{
show_boot_progress(id);
return 0;
}
static inline ulong bootstage_mark_code(const char *file, const char *func,
int linenum)
{
return 0;
}
static inline uint32_t bootstage_start(enum bootstage_id id, const char *name)
{
return 0;
}
static inline uint32_t bootstage_accum(enum bootstage_id id)
{
return 0;
}
static inline int bootstage_stash(void *base, int size)
{
return 0; /* Pretend to succeed */
}
static inline int bootstage_unstash(void *base, int size)
{
return 0; /* Pretend to succeed */
}
#endif /* CONFIG_BOOTSTAGE */
/* Helper macro for adding a bootstage to a line of code */
#define BOOTSTAGE_MARKER() \
bootstage_mark_code(__FILE__, __func__, __LINE__)
#endif