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Diffstat (limited to 'doc/README.sbc8548')
| -rw-r--r-- | doc/README.sbc8548 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/README.sbc8548 b/doc/README.sbc8548 index d72d97d..6cbe12f 100644 --- a/doc/README.sbc8548 +++ b/doc/README.sbc8548 @@ -63,6 +63,30 @@ a 33MHz PCI configuration is currently untested.) => +Updating U-boot with U-boot: +============================ + +Note that versions of u-boot up to and including 2009.08 had u-boot stored +at 0xfff8_0000 -> 0xffff_ffff (512k). Currently it is being stored from +0xfffa_0000 -> 0xffff_ffff (384k). If you use an old macro/script to +update u-boot with u-boot and it uses the old address, you will render +your board inoperable, and you will require JTAG recovery. + +The following steps list how to update with the current address: + + tftp u-boot.bin + md 200000 10 + protect off all + erase fffa0000 ffffffff + cp.b 200000 fffa0000 60000 + md fffa0000 10 + protect on all + +The "md" steps in the above are just a precautionary step that allow +you to confirm the u-boot version that was downloaded, and then confirm +that it was copied to flash. + + Hardware Reference: =================== |