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Booting from OSPI / QSPI

NOTE: Booting from OSPI is a different boot config than QSPI

OSPI Boot

To boot the Dev Kit from OSPI using a CL supplied image, set the boot pins as follows:

B9 B8 B7 B6 B5 B4 B3
Reserved (0) lclk (1) Csel (0) 0 0 0 1

ospi_boot_sw.png

QSPI Boot

To boot the Dev Kit from QSPI using a CL supplied image, set the boot pins as follows:

B9 B8 B7 B6 B5 B4 B3
Reserved (0) lclk (1) Csel (0) 0 0 1 0

qspi_boot_sw.png

Steps

  • boot to linux (i.e. from SD card).
  • cd to boot partition (the directory containing tibot3.bin, etc.../run/media/mmcblk1p1 in my case.)
  • copy the boot files to their respective locations in SPI NOR
    root@mitysom-am62x:~# cp tiboot3.bin /dev/mtd0
    root@mitysom-am62x:~# cp tispl.bin /dev/mtd1
    root@mitysom-am62x:~# cp u-boot.img /dev/mtd2
    root@mitysom-am62x:~# dd if=/dev/mmcblk0boot0 bs=512 skip=13312 count=256 of=uboot.env
    root@mitysom-am62x:~# cp uboot.env /dev/mtd3
    
          0x0 +----------------------------+
              |     ospi.tiboot3(512k)     |
              |                            |
      0x80000 +----------------------------+
              |     ospi.tispl(2m)         |
              |                            |
     0x280000 +----------------------------+
              |     ospi.u-boot(4m)        |
              |                            |
     0x680000 +----------------------------+
              |     ospi.env(128k)         |
              |                            |
     0x6c0000 +----------------------------+
              |   ospi.env.backup(128k)    |
              |                            |
     0x740000 +----------------------------+
              |      padding (768k)        |
     0x800000 +----------------------------+
              |     ospi.rootfs(ubifs)     |
              |                            |
    0xffc0000 +----------------------------+
              |   ospi.phypattern (256k)   |
              |                            |
              +----------------------------+
    

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