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[FAQ] How to flash serial OSPI-NAND with Lauterbach JTAG on AM62x

Hong Guan64
Guru 68430 points
Other Parts Discussed in Thread: SK-AM62-LP

AM62x Boot ROM supports booting from serial (x)SPI-NAND. Please refer to AM62x TRM "Chapter 5 Initialization" for details.
The serial OSPI-NAND (Winbond W35N01JWTBAG) is on TI SK-AM62-LP board [1].
- The FAQ lists how to flash u-boot binary to serial OSPI-NAND with Lauterbach JTAG on AM62x HS-FS or GP, where JTAG is unlocked.
- The Lauterbach T32 JTAG scripts in the FAQ is verified on TI SK-AM62-LP board [1]
- The FAQ provides an alternative flashing option to the u-boot based approach [2], and is useful for initial SoC board bring-up…
[1]. SK-AM62-LP board https://www.ti.com/tool/SK-AM62-LP
[2]. https://e2e.ti.com/support/processors-group/processors/f/791/t/1288373

  • 0
    TI__Guru 68430 points

    1. BOOTMODE[15:0] configuration
    - DIP switch setting on SK-AM62-LP (W35N01JWTBAG)
    SW2{0,0,0,0,0,0,0,0} : SW1{1,1,0,0,0,0,0,0}
    => BOOTMODE[15:0]=0003 which configures OSPI-NAND boot mode such that
    - OSPI-NAND controller/pinmux etc... are pre-configured by AM62x bootrom
    - There's no need to touch/configure Cortex-M SMS core by JTAG debugger
    - Lauterbach T32 OSPI-NAND flashing binary runs on Cortex-R5 core from onchip SRAM only

    2. Lauterbach T32 scripts on flashing serial OSPI-NAND on AM62x
    - am62x_spinand_T32.zip: Lauterbach T32 scripts
    - am62x_spinand_flash.log: a sample T32 serial OSPI-NAND flashing log
    As shown in the T32 flashing log, it is possible to do flashing on a fresh/empty serial OSPI-NAND device, which is useful for initial board bring-up...

    3. A sample serial OSPI-NAND boot log on SK-AM62-LP board after flashing
    - am62-lpsk_10.0.7.4_spinand_boot.log

    am62x_spinand_T32.zip

    Fullscreen am62x_spinand_flash.log Download 
    ======================================================
10. Jun 2025
OSPI-NAND flashing on TI SK-AM62-LP (W35N01JWTBAG)
SW2{0,0,0,0,0,0,0,0} : SW1{1,1,0,0,0,0,0,0}
BOOTMODE[15:0]=0003 for OSPI-NAND boot
PINMUX etc... are pre-configured by AM62x bootrom
======================================================
--------Flash Read ID Test---------
1st 0x0FF (Dummy)
2nd 0x0EF (Manufacture)
3rd 0x0DC (Device ID)[15:8]
4th 0x21 (Device ID)[7:0]
Dual port programming mode enabled
--------NAND FLASH---------
Manufacturer = WINBOND(0xEF) , Device ID = 0xDC (0x21, 0x0, 0x0, 0x0)
read 256. byte(s) to vm:0x0
---------NAND ONFI---------
[0:3]Parameter page signature: ONFI
[4:5]Revision number: 0x0 0x0
[6:7]Features supported: 0x0 0x0
[8:9]Optional commands support: 0x0 0x0
[32:43]Device manufacturer: WINBOND     
[42:63]Device model: W35N01JW            
[64]Manufacturer ID: 0xEF
[65:66]Date code: 0x0 0x0
[80:83]Number of data bytes per page: 0x0 0x10 0x0 0x0
[84:85]Number of spare bytes per page: 0x80 0x0
[86:89]Number of data bytes per partial page: 0x0 0x0 0x0 0x0
[90:91]Number of spare bytes per partial page: 0x0 0x0
[92:95]Number of pages per block: 0x40 0x0 0x0 0x0
[96:99]Number of blocks per unit: 0x0 0x2 0x0 0x0
[100]Number of logical units: 0x1
[101]Number of address cycles: 0x0
[102]Number of bits per cell: 0x1
[103:104]Bad blocks maximum per unit: 0xA 0x0
[105:106]Block endurance: 0x1 0x5
[107]Guaranteed valid blocks at beginning of target: 0x1
[108:109]Block endurance for guaranteed valid blocks: 0x0 0x0
[110]Number of programs per page: 0x1
[111]Partial programming attributes: 0x0
[112]Number of ECC bits: 0x0
[113]Number of interleaved address bits: 0x0
[114]Interleaved operation attributes: 0x0
[128]I/O pin capacitance: 0x8
[129:130]Timing mode support: 0x0 0x0
[131:132]Program cache timing: 0x0 0x0
[133:134]tPROG maximum page program time: 0xBC 0x2
[135:136]tERS maximum block erase time: 0x10 0x27
[137:138]tR maximum page read time: 0x3C 0x0
[139:140]tCCS minimum: 0x0 0x0
[164:165]Vendor-specific revision number: 0x0 0x0
[166:179]Vendor-specific: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
[248]ECC maximum correct ability: 0x0
[249]Die select feature: 0x0
[254:255]Integrity CRC: 0xBF 0x2F
A page size: 4096./128.Bytes (main/spare)
A block size: 0x40000 (64.Pages)
A device size: 0x8000000 Bytes
SPI write: 2. byte(s), 0x0f 0xb0
FLASHFILE unlock done.
--------Flash u-boot binary---------
file 'C:\T32\DMxx\lauterbach\HG\am62x_burn_flash\spinand_r5\binary\tiboot3.bin' (Binary) loaded. 313410 bytes.
file 'C:\T32\DMxx\lauterbach\HG\am62x_burn_flash\spinand_r5\binary\tispl.bin' (Binary) loaded. 1207371 bytes.
file 'C:\T32\DMxx\lauterbach\HG\am62x_burn_flash\spinand_r5\binary\u-boot.img' (Binary) loaded. 1295899 bytes.

    Fullscreen am62-lpsk_10.0.7.4_spinand_boot.log Download 
    U-Boot SPL 2024.04-ti-gfda88f8bcea3 (Jul 26 2024 - 11:00:12 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000a '10.0.8--v10.00.08 (Fiery Fox)')
SPL initial stack usage: 13392 bytes
Trying to boot from SPINAND
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.10.0(release):v2.10.0-367-g00f1ec6b87-dirty
NOTICE:  BL31: Built : 16:09:05, Feb  9 2024

U-Boot SPL 2024.04-ti-gfda88f8bcea3 (Jul 26 2024 - 11:00:12 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000a '10.0.8--v10.00.08 (Fiery Fox)')
SPL initial stack usage: 1904 bytes
Trying to boot from SPINAND
Authentication passed
Authentication passed


U-Boot 2024.04-ti-gfda88f8bcea3 (Jul 26 2024 - 11:00:12 +0000)

SoC:   AM62X SR1.0 HS-FS
Model: Texas Instruments AM62x LP SK
EEPROM not available at 0x50, trying to read at 0x51
Board: AM62-LP-SKEVM rev E2
DRAM:  2 GiB
Core:  83 devices, 32 uclasses, devicetree: separate
NAND:  1024 MiB
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet@8000000port@1
Hit any key to stop autoboot:  2  0 
=> md.l 0x43000030 1
43000030: 00000003                             ....
=> mtd list
List of MTD devices:
* nand0
  - device: nand@0,0
  - parent: memory-controller@3b000000
  - driver: gpmc-nand
  - path: /bus@f0000/memory-controller@3b000000/nand@0,0
  - type: NAND flash
  - block size: 0x40000 bytes
  - min I/O: 0x1000 bytes
  - OOB size: 128 bytes
  - OOB available: 142 bytes
  - ECC strength: 8 bits
  - ECC step size: 512 bytes
  - bitflip threshold: 6 bits
  - 0x000000000000-0x000040000000 : "nand0"
	  - 0x000000000000-0x000000200000 : "NAND.tiboot3"
	  - 0x000000200000-0x000000400000 : "NAND.tispl"
	  - 0x000000400000-0x000000600000 : "NAND.tiboot3.backup"
	  - 0x000000600000-0x000000a00000 : "NAND.u-boot"
	  - 0x000000a00000-0x000000a40000 : "NAND.u-boot-env"
	  - 0x000000a40000-0x000000a80000 : "NAND.u-boot-env.backup"
	  - 0x000000a80000-0x000040000000 : "NAND.file-system"
* spi-nand0
  - device: flash@0
  - parent: spi@fc40000
  - driver: spi_nand
  - path: /bus@f0000/bus@fc00000/spi@fc40000/flash@0
  - type: NAND flash
  - block size: 0x40000 bytes
  - min I/O: 0x1000 bytes
  - OOB size: 128 bytes
  - OOB available: 80 bytes
  - 0x000000000000-0x000008000000 : "spi-nand0"
	  - 0x000000000000-0x000000080000 : "ospi_nand.tiboot3"
	  - 0x000000080000-0x000000280000 : "ospi_nand.tispl"
	  - 0x000000280000-0x000000680000 : "ospi_nand.u-boot"
	  - 0x000000680000-0x0000006c0000 : "ospi_nand.env"
	  - 0x0000006c0000-0x000000700000 : "ospi_nand.env.backup"
	  - 0x000002000000-0x000007fc0000 : "ospi_nand.rootfs"
	  - 0x000007fc0000-0x000008000000 : "ospi_nand.phypattern"
=>