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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/doc/README.mpc83xxads

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Freescale MPC83xx ADS Boards
-----------------------------------------

0. Toolchain / Building

    $ PATH=$PATH:/usr/powerpc/bin
    $ CROSS_COMPILE=powerpc-linux-
    $ export PATH CROSS_COMPILE

    $ powerpc-linux-gcc -v
    Reading specs from /usr/powerpc/lib/gcc/powerpc-linux/3.4.3/specs
    Configured with: ../configure --prefix=/usr/powerpc
    --exec-prefix=/usr/powerpc --target=powerpc-linux --enable-shared
    --disable-nls --disable-multilib --enable-languages=c,c++,ada,f77,objc
    Thread model: posix
    gcc version 3.4.3 (Debian)

    $ powerpc-linux-as -v
    GNU assembler version 2.15 (powerpc-linux) using BFD version 2.15


    $ make MPC8349ADS_config
    Configuring for MPC8349ADS board...

    $ make


1. Board Switches and Jumpers


2. Memory Map

2.1. The memory map should look pretty much like this:

     0x0000_0000     0x7fff_ffff     DDR		     2G
     0x8000_0000     0x9fff_ffff     PCI MEM		     512M
     0xc000_0000     0xdfff_ffff     Rapid IO		     512M
     0xe000_0000     0xe00f_ffff     CCSR		     1M
     0xe200_0000     0xe2ff_ffff     PCI IO		     16M
     0xf000_0000     0xf7ff_ffff     SDRAM		     128M
     0xf800_0000     0xf80f_ffff     BCSR		     1M
     0xfe00_0000     0xffff_ffff     FLASH (boot bank)	     16M


3. Definitions

3.1 Explanation of NEW definitions in:

	include/configs/MPC8349ADS.h

    CONFIG_MPC83xx	    MPC83xx family
    CONFIG_MPC8349	    MPC8349 specific
    CONFIG_TSEC_ENET	    Use on-chip 10/100/1000 ethernet


4. Compilation

    Assuming you're using BASH shell:

	export CROSS_COMPILE=your-cross-compile-prefix
	cd u-boot
	make distclean
	make MPC8349ADS_config
	make

5. Downloading and Flashing Images

5.0 Download over serial line using Kermit:

	loadb
	[Drop to kermit:
	    ^\c
	    send <u-boot-bin-image>
	    c
	]


    Or via tftp:

	tftp 10000 u-boot.bin

5.1 Reflash U-Boot Image using U-Boot

    tftp 10000 u-boot.bin
    protect off fe000000 fe09ffff
    erase fe000000 fe09ffff

    cp.b 10000 fe000000 xxxx
or
    cp.b 10000 fe000000 a0000

You might have to supply the correct byte count for 'xxxx' from
the TFTP.  Maybe a0000 will work too, that corresponds to the
erased sectors.


6. Notes