diff options
| author | Simon Glass <sjg@chromium.org> | 2011-04-07 10:14:41 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-08-24 09:56:21 -0700 |
| commit | 9530dc99ee3539909935e8a60a2bb756499c8318 (patch) | |
| tree | 9e67946a7e123dfa8a65c97629a726dcbd80e591 /arch/arm/lib | |
| parent | 29897caccd59d51e110475edbaa483175f1f363f (diff) | |
Add microsecond boot time measurement
This defines the basics of a new boot time measurement feature. This allows
logging of very accurate time measurements as the boot proceeds, by using
an available microsecond counter.
To enable the feature, define CONFIG_BOOTSTAGE in your board config file.
Also available is CONFIG_BOOTSTAGE_REPORT which will cause a report to be
printed just before handing off to the OS.
BUG=chromium-os:13875
TEST=build and boot, check that progress is reported before running Linux:
Timer summary in microseconds:
Mark Elapsed Stage
0 0 awake
2,181,078 2,181,078 usb_start
11,861,817 9,680,739 bootp_start
11,884,610 22,793 bootp_stop
11,884,689 79 tftp start
15,271,536 3,386,847 tftp done
15,271,568 32 bootm_start
15,406,551 134,983 start_kernel
Change-Id: I71b89c8402dc5dec75e68333bd24a6bab7500a1b
Reviewed-on: http://gerrit.chromium.org/gerrit/197
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm/lib')
| -rw-r--r-- | arch/arm/lib/board.c | 2 | ||||
| -rw-r--r-- | arch/arm/lib/bootm.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/lib/board.c b/arch/arm/lib/board.c index 1a9fe7eb5bc..cd88c7e3588 100644 --- a/arch/arm/lib/board.c +++ b/arch/arm/lib/board.c @@ -271,6 +271,8 @@ void board_init_f (ulong bootflag) gd_t *id; ulong addr, addr_sp; + bootstage_mark(BOOTSTAGE_START_UBOOT, "start_armboot"); + /* Pointer is writable since we allocated a register for it */ gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07); /* compiler optimization barrier needed for GCC >= 3.4 */ diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index 802e833a2ed..5116e950f85 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -83,6 +83,10 @@ void arch_lmb_reserve(struct lmb *lmb) static void announce_and_cleanup(void) { printf("\nStarting kernel ...\n\n"); + bootstage_mark(BOOTSTAGE_BOOTM_HANDOFF, "start_kernel"); +#ifdef CONFIG_BOOTSTAGE_REPORT + bootstage_report(); +#endif #ifdef CONFIG_USB_DEVICE { |