David Hawkins wrote:
Confusing eh!?
Very! Thank you for explaining it.
Look at the p14, and follow along with that example, see if you can see the right bytes in memory.
Almost, but not quite. For one, the flash was locked, and that was why the flash erase/copy would not take before. Secondly, the eleventh byte is different, which I think just means I have a different rev than yours, 0x43 vs. 0x7f (and I can verify that it is a read-only register):
=> md.b f8000000 20 f8000000: 2f 0c 40 08 86 af 07 33 ff ff 43 12 ff ff ff 02 /.@....3..C..... f8000010: 22 07 05 19 24 ff ff ff ff ff ff ff ff ff ff ff "...$...........
Take the time to read the document I sent. Read the MPC8349 manual with regards to resetting the processor. Eventually it'll make sense. I found it confusing to start with. Hopefully this will help you.
Big help already, I was able to flash the new u-boot to fe000000, when I could not before. Unfortunately, I am still booting to the old u-boot at fff00000(?) I apologize if I am being dense, but I thought your document indicates flashing fe000000 with a u-boot.bin would be all that is required to boot from low memory. See below:
=> md fe000000 fe000000: 04040404 04040404 04040404 04040404 ................ fe000010: 00000000 00000000 00000000 00000000 ................ fe000020: b0b0b0b0 b0b0b0b0 60606060 60606060 ........```````` fe000030: a0a0a0a0 a0a0a0a0 00000000 00000000 ................ fe000040: 27051956 552d426f 6f742031 2e322e30 '..VU-Boot 1.2.0 fe000050: 2d673134 64613566 37362028 4d617920 -g14da5f76 (May fe000060: 20312032 30303720 2d203134 3a33333a 1 2007 - 14:33: fe000070: 33342920 4d504338 33585800 00000000 34) MPC83XX..... => reset Resetting the board.
U-Boot 1.1.3 (Dec 21 2006 - 11:05:55) MPC83XX
Clock configuration: Coherent System Bus: 264 MHz Core: 528 MHz Local Bus Controller: 528 MHz Local Bus: 132 MHz DDR: 264 MHz SEC: 88 MHz I2C1: 264 MHz I2C2: 264 MHz TSEC1: 264 MHz TSEC2: 264 MHz USB MPH: 88 MHz USB DR: 88 MHz CPU: MPC8349E, Rev: 31 at 528 MHz Board: Freescale MPC8349MDS I2C: ready DRAM: DDR DIMM: data bus width is 64 bit with ECC DDRC ECC mode: ON SDRAM on Local Bus is NOT available! DDR RAM: 256 MB FLASH: 32 MB In: serial Out: serial Err: serial Net: Freescale TSEC0: PHY is Marvell 88E1111 (1410cc2) Freescale TSEC1: PHY is Marvell 88E1111 (1410cc2) Freescale TSEC0, Freescale TSEC1 Hit any key to stop autoboot: 0 =>
Thank you again for all your help! Michael