# PBL/XBL log
Source: [https://docs.qualcomm.com/doc/80-70014-4/topic/bootloader-logs.html](https://docs.qualcomm.com/doc/80-70014-4/topic/bootloader-logs.html)
The sample primary boot loader/eXtensible boot loader (PBL/XBL) log indicates the
start and end of the PBL and XBL.
For more information on PBL and XBL, see Boot loader.
The table lists log entries that can help verify the start and end of the boot
loaders.
Table : Checking PBL/XBL log
| Log entry | Description |
| --- | --- |
| `S - Boot Interface: UFS` | Indicates the booting of Qualcomm Linux software images from UFS as
the boot image is stored in UFS. |
| `S - PBL Patch Ver: 1` | Indicates the start of PBL. |
| `S - 69043 - PBL, End` | Indicates the end of PBL. |
| `B - 79574 - SBL1, Start` | Indicates the start of XBL. Both SBL1 and XBL refer to the same
secondary boot loader. |
| `B - 1394338 - SBL1, End` | Indicates the end of XBL. |
| `D - 1318210 - SBL1, Delta` | Indicates the time difference in microseconds between start and end
of XBL. |
Note: The numbers in the log entry column of the table show the
timestamp in microseconds.
The following is a sample
log:
Format: Log Type - Time(microsec) - Message - Optional Info
Log Type: B - Since Boot(Power On Reset), D - Delta, S - Statistic
S - QC_IMAGE_VERSION_STRING=BOOT.
S - IMAGE_VARIANT_STRING=Soc
S - OEM_IMAGE_VERSION_STRING=ip-
S - Boot Interface: UFS
S - Secure Boot: Off
S - Boot Config @ 0x00786070 = 0x000000c1
S - JTAG ID @ 0x00786130 = 0x001980e1
S - OEM ID @ 0x00786138 = 0x00000000
S - Serial Number @ 0x00786134 = 0xf744c1e9
S - OEM Config Row 0 @ 0x007841c0 = 0x0000000000000000
S - OEM Config Row 1 @ 0x007841c8 = 0x0000000000000000
S - Feature Config Row 0 @ 0x00784148 = 0x0000000000000000
S - Feature Config Row 1 @ 0x00784150 = 0x0000000000000000
S - Core 0 Frequency, 1516 MHz
S - PBL Patch Ver: 1
D - 6626 - pbl_apps_init_timestamp
D - 31574 - bootable_media_detect_timestamp
D - 853 - bl_elf_metadata_loading_timestamp
D - 704 - bl_hash_seg_auth_timestamp
D - 6621 - bl_elf_loadable_segment_loading_timestamp
D - 4638 - bl_elf_segs_hash_verify_timestamp
D - 17185 - bl_sec_hash_seg_auth_timestamp
D - 811 - bl_sec_segs_hash_verify_timestamp
D - 31 - pbl_populate_shared_data_and_exit_timestamp
S - 69043 - PBL, End
B - 79574 - SBL1, Start
B - 210297 - SBL1 BUILD @
B - 214445 - usb: usb_shared_xbl_dtb_node_init dtb status , 0x3
B - 223717 - usb: HS: device tree Not available , 0x3
B - 224114 - usb: eud_serial_upd , 0xf744c1e9
D - 229421 - sbl1_hw_init
D - 519 - media_init:1
D - 0 - smss_load_cancel
B - 239455 - SMSS - Image Load, Start
D - 3111 - SMSS - Image Loaded, Delta - (0 Bytes)
D - 1037 - Auth Metadata
D - 5825 - sbl1_xblconfig_init
B - 254522 - XBL Config - Image Load, Start
B - 258640 - DTB Found: [pre-ddr][7601f201000000][0]
D - 4453 - boot_pre_ddr_dtb_load
B - 267851 - UFS Device Tree Settings
B - 271206 - UFS Init Speed: HS Enabled 1, Gear 4 2 Lane Rate 2
B - 280874 - UFS Perf Speed: HS Enabled 1, Gear 4 2 Lane Rate 2
B - 287096 - UFS Timeouts(us): fDeviceInit 2500000, UTRD Poll 30000000
D - 45323 - media_init:2
B - 387868 - UFS INQUIRY ID: SAMSUNG KM2L9001CM-B518 0700
B - 389485 - UFS Boot LUN: 1
B - 400953 - UFS GEAR: 3
D - 95099 - media_init:3
D - 30 - shrm_load_cancel
B - 410835 - SHRM - Image Load, Start
D - 702 - Auth Metadata
D - 1403 - Segments hash check
D - 12230 - SHRM - Image Loaded, Delta - (35752 Bytes)
D - 0 - boot_default_cdt_init
D - 488 - boot_cdt_init
B - 435540 - CDT - Image Load, Start
B - 438407 - CDT Version:3,Platform ID:32,Major ID:1,Minor ID:0,Subtype:2
D - 16928 - sbl1_hw_platform_pre_ddr
D - 0 - devcfg init
B - 464942 - PMIC A:2.0 B:1.0 C:2.2 I:1.0
B - 466772 - PM: PM8 0x4
B - 469181 - PM: xVdd reset
B - 471835 - PM: PON by SYSOK
B - 724497 - PM: SET_VAL:Skip
B - 724527 - PM: Verifying PON-Trigger specific configurations & current PON-Trigger
B - 733281 - PM: All PON-Trigger specific configs verified. Proceeding to BOOT
B - 742736 - PM: PSI: b0x06_v0x3c
B - 745450 - PM: Device Init # SPMI Transn: 15422
D - 291031 - pm_device_init, Delta
B - 751154 - pm_driver_init, Start
B - 762286 - PM: Driver Init # SPMI Transn: 500
D - 7655 - pm_driver_init, Delta
B - 766983 - PM: CHG Type in CHG init : 0
B - 771375 - PM: Battery ID: 7612Ohm
B - 774547 - PM: debug board connected
B - 778207 - vsense_init, Start
D - 0 - vsense_init, Delta
D - 339312 - sbl1_hw_pre_ddr_init
D - 0 - boot_dload_handle_forced_dload_timeout
D - 2928 - sbl1_load_ddr_training_data
B - 803034 - Pre_DDR_clock_init, Start
D - 61 - Pre_DDR_clock_init, Delta
D - 12902 - sbl1_ddr_set_params
B - 814746 - sbl1_ddr_init, Start
B - 818162 - LP4 DDR detected
B - 832772 - eCDT MRR - Data Starting Address: 0x09066D00
D - 15250 - sbl1_ddr_init, Delta
B - 838445 - DSF version = 262.0.46
B - 841830 - Manufacturer ID = 1, Device Type = 7
B - 845399 - Rank 0 size = 2048 MB, Rank 1 size = 4096 MB
B - 850248 - Row Hamming DDR
B - 855769 - Row Hammer Check : DRAM supports unlimited MAC Value : MR_RH[OP2:0 = 0] & MR_RH[OP3 = 1] for CH0 & CS0
B - 864431 - Row Hammer Check : DRAM supports unlimited MAC Value : MR_RH[OP2:0 = 0] & MR_RH[OP3 = 1] for CH0 & CS1
B - 875136 - Row Hammer Check : DRAM supports unlimited MAC Value : MR_RH[OP2:0 = 0] & MR_RH[OP3 = 1] for CH1 & CS0
B - 885842 - Row Hammer Check : DRAM supports unlimited MAC Value : MR_RH[OP2:0 = 0] & MR_RH[OP3 = 1] for CH1 & CS1
D - 81893 - sbl1_ddr_init
D - 31 - boot_pre_ddi_entry
B - 904325 - do_ddr_training, Start
B - 945530 - DDR: Start of DDR Training Restore
B - 949068 - Current DDR Freq = 1709 MHz
B - 950166 - Max enabled DDR Freq = 2092 MHz
B - 954192 - DDR: End of DDR Training Restore
D - 51057 - do_ddr_training, Delta
D - 58834 - sbl1_do_ddr_training
D - 518 - boot_ddi_entry
B - 970022 - Pimem init cmd, entry
D - 9211 - Pimem init cmd, exit
B - 982466 - External heap init, Start
B - 985546 - External heap init, End
D - 22112 - sbl1_post_ddr_init
D - 30 - sbl1_hw_init_secondary
B - 996252 - DDR - Image Load, Start
B - 1001559 - DTB Found: [post-ddr][7601f201000000][2001010000000000]
D - 9486 - boot_post_ddr_dtb_load
D - 762 - boot_fedl_check
B - 1013789 - APDP - Image Load, Start
D - 2959 - APDP - Image Loaded, Delta - (0 Bytes)
D - 0 - boot_dload_dump_security_regions
D - 0 - ramdump_load_cancel
B - 1030137 - RamDump - Image Load, Start
D - 3325 - RamDump - Image Loaded, Delta - (0 Bytes)
D - 0 - boot_update_abnormal_reset_status
D - 0 - boot_cache_set_memory_barrier
D - 0 - boot_smem_debug_init
D - 458 - boot_smem_init
D - 0 - boot_smem_alloc_for_minidump
D - 61 - boot_smem_store_pon_status
D - 30 - sbl1_hw_platform_smem
D - 61 - boot_ddr_share_data_to_aop
D - 488 - boot_clock_init_rpm
D - 0 - boot_vsense_copy_to_smem
D - 0 - boot_populate_ram_partition_table
D - 30 - boot_populate_ddr_details_shared_table
D - 0 - sbl1_tlmm_init
D - 0 - sbl1_efs_handle_cookies
B - 1092906 - OEM_MISC - Image Load, Start
D - 762 - Auth Metadata
D - 274 - Segments hash check
D - 10645 - OEM_MISC - Image Loaded, Delta - (5048 Bytes)
B - 1106875 - QTI_MISC - Image Load, Start
D - 5704 - QTI_MISC - Image Loaded, Delta - (0 Bytes)
B - 1122308 - PM: PM Total Mem Allocated: 2340
D - 5520 - sbl1_pm_aop_pre_init_wrapper
B - 1126883 - AOP - Image Load, Start
D - 763 - Auth Metadata
D - 1677 - Segments hash check
D - 13085 - AOP - Image Loaded, Delta - (200732 Bytes)
B - 1143292 - QSEE Dev Config - Image Load, Start
D - 854 - Auth Metadata
D - 610 - Segments hash check
D - 13024 - QSEE Dev Config - Image Loaded, Delta - (53248 Bytes)
B - 1165344 - QSEE - Image Load, Start
D - 17873 - Auth Metadata
D - 21594 - Segments hash check
D - 82441 - QSEE - Image Loaded, Delta - (3900768 Bytes)
B - 1251811 - DTB: invalid vibration prop value
B - 1256722 - DTB: Vibration Enabled
D - 10217 - sbl1_hw_play_vibr
B - 1264865 - SEC - Image Load, Start
D - 3142 - SEC - Image Loaded, Delta - (0 Bytes)
B - 1271758 - CPUCPFW - Image Load, Start
D - 17598 - Auth Metadata
D - 17385 - Segments hash check
D - 48007 - CPUCPFW - Image Loaded, Delta - (171180 Bytes)
B - 1328793 - QHEE - Image Load, Start
D - 17843 - Auth Metadata
D - 6954 - Segments hash check
D - 27664 - QHEE - Image Loaded, Delta - (1478736 Bytes)
B - 1359781 - APPSBL - Image Load, Start
D - 671 - Auth Metadata
D - 10889 - Segments hash check
D - 25315 - APPSBL - Image Loaded, Delta - (2564048 Bytes)
D - 0 - sbl1_save_appsbl_index
B - 1394338 - SBL1, End
D - 1318210 - SBL1, DeltaCopy to clipboard
**Parent Topic:** Debug
Last Published: Feb 02, 2026
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