bootstage: Support SPL

At present bootstage only supports U-Boot proper. But SPL can also consume
boot time so it is useful to have the record start there.

Add bootstage support to SPL. Also support stashing the timing information
when SPL finishes so that it can be picked up and reported by U-Boot
proper. This provides a full boot time record, excluding only the time
taken by the boot ROM.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/common/Kconfig b/common/Kconfig
index a3094d984fd2e88c6131ea96d9f6c88e1739661d..c49199bb1a66fc421a75a20eb056496e2abb19b5 100644 (file)
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -18,6 +18,15 @@ config BOOTSTAGE
          Calls to show_boot_progress() will also result in log entries but
          these will not have names.
 
+config SPL_BOOTSTAGE
+       bool "Boot timing and reported in SPL"
+       depends on BOOTSTAGE
+       help
+         Enable recording of boot time in SPL. To make this visible to U-Boot
+         proper, enable BOOTSTAGE_STASH as well. This will stash the timing
+         information when SPL finishes and load it when U-Boot proper starts
+         up.
+
 config BOOTSTAGE_REPORT
        bool "Display a detailed boot timing report before booting the OS"
        depends on BOOTSTAGE

diff --git a/common/Makefile b/common/Makefile
index c7c8ea42c6ece400cbf5f232938b81771cda2d4f..539cf98e19f35b8742454d1188e4110e12affcba 100644 (file)
--- a/common/Makefile
+++ b/common/Makefile
@@ -65,7 +65,6 @@ obj-$(CONFIG_USB_STORAGE) += usb_storage.o
 endif
 
 # others
-obj-$(CONFIG_BOOTSTAGE) += bootstage.o
 obj-$(CONFIG_CONSOLE_MUX) += iomux.o
 obj-$(CONFIG_MTD_NOR_FLASH) += flash.o
 obj-$(CONFIG_CMD_KGDB) += kgdb.o kgdb_stubs.o
@@ -89,6 +88,8 @@ obj-$(CONFIG_CMDLINE) += cli_readline.o cli_simple.o
 
 endif # !CONFIG_SPL_BUILD
 
+obj-$(CONFIG_$(SPL_)BOOTSTAGE) += bootstage.o
+
 ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_SPL_DFU_SUPPORT) += dfu.o
 obj-$(CONFIG_SPL_DFU_SUPPORT) += cli_hush.o

diff --git a/common/board_f.c b/common/board_f.c
index a8fc28cf4b2413c7f8f600743c9426870ff7022e..46e52849fb80f9a5a12a1b8ed0182d6fc02e9b75 100644 (file)
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -707,11 +707,26 @@ static int jump_to_copy(void)
 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 static int initf_bootstage(void)
 {
+#if defined(CONFIG_SPL_BOOTSTAGE) && defined(CONFIG_BOOTSTAGE_STASH)
+       bool from_spl = true;
+#else
+       bool from_spl = false;
+#endif
        int ret;
 
-       ret = bootstage_init(true);
+       ret = bootstage_init(!from_spl);
        if (ret)
                return ret;
+       if (from_spl) {
+               const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
+                                              CONFIG_BOOTSTAGE_STASH_SIZE);
+
+               ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
+               if (ret && ret != -ENOENT) {
+                       debug("Failed to unstash bootstage: err=%d\n", ret);
+                       return ret;
+               }
+       }
 
        bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 

diff --git a/common/spl/spl.c b/common/spl/spl.c
index 0a49766f21422c25c2756969bbc41b70b9c9c580..f493a3ad495422a31e490f9d4f12a29d4ba876b4 100644 (file)
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -232,6 +232,13 @@ static int spl_common_init(bool setup_malloc)
                gd->malloc_ptr = 0;
        }
 #endif
+       ret = bootstage_init(true);
+       if (ret) {
+               debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
+                     ret);
+               return ret;
+       }
+       bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
        if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
                ret = fdtdec_setup();
                if (ret) {
@@ -240,8 +247,10 @@ static int spl_common_init(bool setup_malloc)
                }
        }
        if (IS_ENABLED(CONFIG_SPL_DM)) {
+               bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
                /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
                ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
+               bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
                if (ret) {
                        debug("dm_init_and_scan() returned error %d\n", ret);
                        return ret;
@@ -421,6 +430,15 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
        }
 
        debug("loaded - jumping to U-Boot...\n");
+#ifdef CONFIG_BOOTSTAGE_STASH
+       int ret;
+
+       bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
+       ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
+                             CONFIG_BOOTSTAGE_STASH_SIZE);
+       if (ret)
+               debug("Failed to stash bootstage: err=%d\n", ret);
+#endif
        spl_board_prepare_for_boot();
        jump_to_image_no_args(&spl_image);
 }

diff --git a/include/bootstage.h b/include/bootstage.h
index 5f4fffaffbde436f4d69a3555b3fa045df78e9e1..c972027ffc624cd3748b2429b25b660a068bbebd 100644 (file)
--- a/include/bootstage.h
+++ b/include/bootstage.h
@@ -177,6 +177,7 @@ enum bootstage_id {
         */
        BOOTSTAGE_ID_AWAKE,
        BOOTSTAGE_ID_START_SPL,
+       BOOTSTAGE_ID_END_SPL,
        BOOTSTAGE_ID_START_UBOOT_F,
        BOOTSTAGE_ID_START_UBOOT_R,
        BOOTSTAGE_ID_USB_START,
@@ -200,6 +201,7 @@ enum bootstage_id {
        BOOTSTAGE_ID_ACCUM_SPI,
        BOOTSTAGE_ID_ACCUM_DECOMP,
        BOOTSTAGE_ID_FPGA_INIT,
+       BOOTSTATE_ID_ACCUM_DM_SPL,
        BOOTSTATE_ID_ACCUM_DM_F,
        BOOTSTATE_ID_ACCUM_DM_R,
 
@@ -228,8 +230,14 @@ ulong timer_get_boot_us(void);
 void show_boot_progress(int val);
 #endif
 
-#if defined(CONFIG_BOOTSTAGE) && !defined(CONFIG_SPL_BUILD) && \
-       !defined(USE_HOSTCC)
+#if !defined(USE_HOSTCC)
+#if CONFIG_IS_ENABLED(BOOTSTAGE)
+#define ENABLE_BOOTSTAGE
+#endif
+#endif
+
+#ifdef ENABLE_BOOTSTAGE
+
 /* This is the full bootstage implementation */
 
 /**
@@ -420,7 +428,8 @@ static inline int bootstage_init(bool first)
 {
        return 0;
 }
-#endif /* CONFIG_BOOTSTAGE */
+
+#endif /* ENABLE_BOOTSTAGE */
 
 /* Helper macro for adding a bootstage to a line of code */
 #define BOOTSTAGE_MARKER()     \