The bootstage feature is useful for timing booting of a board, both for
debugging and for production. On ARM devices, detailed timing information
can be passed to Linux (where for example it could be logged or reported
to a connected server).
Bootstage was written before early malloc(). At present bootstage uses the
data section and a large block of memory, which is not ideal. Also it does
not support SPL.
This series revamps bootstage. It allows a full timing trace to be
collected from SPL through to booting Linux, for example:
Mark Elapsed Stage
0 0 reset
2,809,110 2,809,110 spl
2,824,791 15,681 end_spl
2,879,616 54,825 board_init_f
3,180,834 301,218 board_init_r
3,496,057 315,223 id=64
3,497,957 1,900 id=64
3,497,959 2 main_loop
Accumulated time:
723 dm_r
3,763 of_live
8,027 dm_spl
120,731 dm_f
168,207 lcd
Simon Glass (15):
bootstage: Provide a default timer function
bootstage: Require timer_get_boot_us() to be defined
bootstage: Change CONFIG_BOOTSTAGE_USER_COUNT to an int
bootstage: Convert to use malloc()
bootstage: Fix up code style and comments
bootstage: Use rec_count as the array index
bootstage: Show records with a zero time
bootstage: Use debug() for stashing messages
bootstage: Support relocating boostage data
bootstage: Init as early as possible
bootstage: Record the time taken to set up driver model
bootstage: Tidy up error return values
bootstage: Adjust to use const * where possible
bootstage: Support SPL
bootstage: Record time taken to set up the live device tree
arch/sandbox/cpu/cpu.c | 11 ++
common/Kconfig | 18 ++-
common/Makefile | 3 +-
common/board_f.c | 61 ++++++++-
common/board_r.c | 16 ++-
common/bootstage.c | 257 ++++++++++++++++++++++---------------
common/spl/spl.c | 18 +++
configs/sandbox_defconfig | 2 +-
configs/sandbox_flattree_defconfig | 2 +-
configs/sandbox_noblk_defconfig | 2 +-
configs/sandbox_spl_defconfig | 2 +-
include/asm-generic/global_data.h | 4 +
include/bootstage.h | 62 +++++++--
lib/time.c | 17 +++
14 files changed, 349 insertions(+), 126 deletions(-)
--
2.13.0.303.g4ebf302169-goog
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