Kconfig: Move CONFIG_BOOTSTAGE to Kconfig

Move CONFIG_BOOT_STAGE and its associated options to Kconfig. Adjust existing users and code. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-03-02 17:04:37 -07:00
parent 5c4f9c1d72
commit ee2b24340f
9 changed files with 120 additions and 63 deletions
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -341,4 +341,110 @@ config CMD_SETGETDCR

 endmenu

+menu "Boot timing"
+
+config BOOTSTAGE
+	bool "Boot timing and reporting"
+	help
+	  Enable recording of boot time while booting. To use it, insert
+	  calls to bootstage_mark() with a suitable BOOTSTAGE_ID from
+	  bootstage.h. Only a single entry is recorded for each ID. You can
+	  give the entry a name with bootstage_mark_name(). You can also
+	  record elapsed time in a particular stage using bootstage_start()
+	  before starting and bootstage_accum() when finished. Bootstage will
+	  add up all the accumated time and report it.
+
+	  Normally, IDs are defined in bootstage.h but a small number of
+	  additional 'user' IDs can be used but passing BOOTSTAGE_ID_ALLOC
+	  as the ID.
+
+	  Calls to show_boot_progress() wil also result in log entries but
+	  these will not have names.
+
+config BOOTSTAGE_REPORT
+	bool "Display a detailed boot timing report before booting the OS"
+	depends on BOOTSTAGE
+	help
+	  Enable output of a boot time report just before the OS is booted.
+	  This shows how long it took U-Boot to go through each stage of the
+	  boot process. The report looks something like this:
+
+		Timer summary in microseconds:
+		       Mark    Elapsed  Stage
+			  0          0  reset
+		  3,575,678  3,575,678  board_init_f start
+		  3,575,695         17  arch_cpu_init A9
+		  3,575,777         82  arch_cpu_init done
+		  3,659,598     83,821  board_init_r start
+		  3,910,375    250,777  main_loop
+		 29,916,167 26,005,792  bootm_start
+		 30,361,327    445,160  start_kernel
+
+config BOOTSTAGE_USER_COUNT
+	hex "Number of boot ID numbers available for user use"
+	default 20
+	help
+	  This is the number of available user bootstage records.
+	  Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...)
+	  a new ID will be allocated from this stash. If you exceed
+	  the limit, recording will stop.
+
+config CMD_BOOTSTAGE
+	bool "Enable the 'bootstage' command"
+	depends on BOOTSTAGE
+	help
+	  Add a 'bootstage' command which supports printing a report
+	  and un/stashing of bootstage data.
+
+config BOOTSTAGE_FDT
+	bool "Store boot timing information in the OS device tree"
+	depends on BOOTSTAGE
+	help
+	  Stash the bootstage information in the FDT. A root 'bootstage'
+	  node is created with each bootstage id as a child. Each child
+	  has a 'name' property and either 'mark' containing the
+	  mark time in microsecond, or 'accum' containing the
+	  accumulated time for that bootstage id in microseconds.
+	  For example:
+
+		bootstage {
+			154 {
+				name = "board_init_f";
+				mark = <3575678>;
+			};
+			170 {
+				name = "lcd";
+				accum = <33482>;
+			};
+		};
+
+	  Code in the Linux kernel can find this in /proc/devicetree.
+
+config BOOTSTAGE_STASH
+	bool "Stash the boot timing information in memory before booting OS"
+	depends on BOOTSTAGE
+	help
+	  Some OSes do not support device tree. Bootstage can instead write
+	  the boot timing information in a binary format at a given address.
+	  This happens through a call to bootstage_stash(), typically in
+	  the CPU's cleanup_before_linux() function. You can use the
+	  'bootstage stash' and 'bootstage unstash' commands to do this on
+	  the command line.
+
+config BOOTSTAGE_STASH_ADDR
+	hex "Address to stash boot timing information"
+	default 0
+	help
+	  Provide an address which will not be overwritten by the OS when it
+	  starts, so that it can read this information when ready.
+
+config BOOTSTAGE_STASH_SIZE
+	hex "Size of boot timing stash region"
+	default 4096
+	help
+	  This should be large enough to hold the bootstage stash. A value of
+	  4096 (4KiB) is normally plenty.
+
+endmenu
+
 endmenu