[ABANDONED] Issue happened when JLink load axf file to MCU

jinzhanhua · October 25, 2021 at 12:50 PM

Hello!
MCU supplier provide flash driver under KEIL MDK. I am developing open flash driver of it. Code of open flash driver completed. During testing, I found one strange thing when JLink load axf file.
1. I load file under KEIL MDK, using Download button(F8) function.
2. I load axf which generated under KEIL MDK using my open flash driver. JLink will verify code inside MCU's flash first. My open flash driver verify most part successfully. But in the end, driver reported some data not match.
3. I checked address . Address start from 0x1009464, JLink sent 0xFF for verification, data of MCU's flash is loaded using KEIL MDK.

Code

FUNC:yc_flash_verify LINE:1753 ADDR:1009460 Verify Error
VERIFY DATA:
4e 8e 00 01 ff ff ff ff ff ff ff ff ff ff ff ff 
READ DATA:
4e 8e 00 01 00 00 00 00 3f 3f 00 00 00 00 00 00 
FUNC:yc_flash_verify LINE:1753 ADDR:1009470 Verify Error
VERIFY DATA:
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
READ DATA:
00 12 14 24 28 30 35 3f 11 0b 06 04 03 02 02 02 
FUNC:yc_flash_verify LINE:1753 ADDR:1009480 Verify Error
VERIFY DATA:
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
READ DATA:
00 01 07 0a 11 12 13 13 00 00 80 3f 00 00 80 3f 
FUNC:yc_flash_verify LINE:1753 ADDR:1009490 Verify Error
VERIFY DATA:
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
READ DATA:
00 00 80 3f 00 00 80 3f 00 00 80 3f 00 00 80 3f 
FUNC:yc_flash_verify LINE:1753 ADDR:10094a0 Verify Error
VERIFY DATA:
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
READ DATA:
1c 00 00 00 00 80 07 01 01 3f 04 00 6a 01 02 a0

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4. Map of axf file, address start from 0x1009464 is:

Code

Load Region LR_IROM4 (Base: 0x01000400, Size: 0x00009110, Max: 0x01000000, ABSOLUTE)


    Execution Region RW_IRAM2 (Exec base: 0x00020000, Load base: 0x01009464, Size: 0x00000bb0, Max: 0x00010000, ABSOLUTE)


    Exec Addr    Load Addr    Size         Type   Attr      Idx    E Section Name        Object


    0x00020000   0x01009464   0x00000003   Data   RW           59    .data               main.o
    0x00020003   0x01009467   0x00000001   PAD
    0x00020004   0x01009468   0x000000a6   Data   RW          145    .data               yc_emv_contactless_l1.o
    0x000200aa   0x0100950e   0x00000002   PAD
    0x000200ac        -       0x000000ff   Zero   RW           58    .bss                main.o
    0x000201ab        -       0x00000800   Zero   RW          126    .bss                yc_uart.o
    0x000209ab   0x0100950e   0x00000001   PAD
    0x000209ac        -       0x00000201   Zero   RW          142    .bss                yc_emv_contactless_l1.o

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Mean 0x01009464 is initialized data need load to RAM during system startup.
5. I attached axf file, please rename YC3121_Keil.elf to YC3121_Keil.axf.
6. Update:
I load hex file which generated by KEIL MDK, verification of my open flash driver passed!
So problem is JLink not load data of Load region??

Code

FUNC:yc_flash_init LINE:1024
FUNC:yc_flash_verify LINE:1702 ADDR:1000000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1001000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1002000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1003000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1004000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1005000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1006000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1007000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1008000 SIZE:4096
FUNC:yc_flash_verify LINE:1702 ADDR:1009000 SIZE:4096
FUNC:yc_flash_uninit LINE:1906

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My question is:
JLink not send correct data of axf or not process Load region of axf?
Another question is:
This MCU's flash not support sector erase, chip erase only. How to let JLink send erase chip command when end of sector verify failed?
Thanks all!

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