From: Vishnu Singh <v-sin...@ti.com> U-Boot now stashes its bootstage buffer into a reserved memory region whenever CONFIG_BOOTSTAGE_STASH is enabled, just before exiting to the kernel. This allows a post boot parser to read a unified timeline (SPL→U-Boot→Kernel→MCU/DSP) directly from DDR, enabling standardized and repeatable boot-time profiling across releases and SoCs.
Change summary: Call bootstage_stash_default() in announce_and_cleanup() when CONFIG_BOOTSTAGE_STASH is set. Reference boot-time parser utility: https://github.com/v-singh1/boot-time-parse Sample boot time report: +--------------------------------------------------------------------+ am62xx-evm Boot Time Report +--------------------------------------------------------------------+ Device Power On : 0 ms SPL Time : 843 ms U-Boot Time : 2173 ms Kernel handoff time : 462 ms Kernel Time : 2522 ms Total Boot Time : 6000 ms +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ Bootloader and Kernel Boot Records +--------------------------------------------------------------------+ BOOTSTAGE_AWAKE = 0 ms (+ 0 ms) BOOTSTAGE_START_UBOOT_F = 843 ms (+ 0 ms) BOOTSTAGE_ACCUM_DM_F = 843 ms (+ 0 ms) BOOTSTAGE_START_UBOOT_R = 1951 ms (+1108 ms) BOOTSTAGE_ACCUM_DM_R = 1951 ms (+ 0 ms) BOOTSTAGE_NET_ETH_START = 2032 ms (+ 81 ms) BOOTSTAGE_NET_ETH_INIT = 2053 ms (+ 21 ms) BOOTSTAGE_MAIN_LOOP = 2055 ms (+ 2 ms) BOOTSTAGE_START_MCU = 2661 ms (+606 ms) BOOTSTAGE_BOOTM_START = 2959 ms (+298 ms) BOOTSTAGE_RUN_OS = 3016 ms (+ 57 ms) BOOTSTAGE_BOOTM_HANDOFF = 3016 ms (+ 0 ms) BOOTSTAGE_KERNEL_START = 3478 ms (+462 ms) BOOTSTAGE_KERNEL_END = 6000 ms (+2522 ms) +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ MCU Boot Records +--------------------------------------------------------------------+ MCU_AWAKE = 2661 ms (+ 0 ms) BOARD_PERIPHERALS_INIT = 2661 ms (+ 0 ms) MAIN_TASK_CREATE = 2661 ms (+ 0 ms) FIRST_TASK = 2662 ms (+ 1 ms) DRIVERS_OPEN = 2662 ms (+ 0 ms) BOARD_DRIVERS_OPEN = 2662 ms (+ 0 ms) IPC_SYNC_FOR_LINUX = 6636 ms (+3974 ms) IPC_REGISTER_CLIENT = 6636 ms (+ 0 ms) IPC_SUSPEND_TASK = 6636 ms (+ 0 ms) IPC_RECEIVE_TASK = 6636 ms (+ 0 ms) IPC_SYNC_ALL = 6787 ms (+151 ms) +--------------------------------------------------------------------+ Signed-off-by: Vishnu Singh <v-sin...@ti.com> --- arch/arm/lib/bootm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c index 7eb764e1f4e..b01e763ff28 100644 --- a/arch/arm/lib/bootm.c +++ b/arch/arm/lib/bootm.c @@ -57,6 +57,9 @@ static void announce_and_cleanup(int fake) #ifdef CONFIG_BOOTSTAGE_FDT bootstage_fdt_add_report(); #endif + if (IS_ENABLED(CONFIG_BOOTSTAGE_STASH)) + bootstage_stash_default(); + #ifdef CONFIG_BOOTSTAGE_REPORT bootstage_report(); #endif -- 2.50.1
