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Diffstat (limited to 'qemu/roms/u-boot/board/pb1x00/README')
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diff --git a/qemu/roms/u-boot/board/pb1x00/README b/qemu/roms/u-boot/board/pb1x00/README deleted file mode 100644 index b1e949411..000000000 --- a/qemu/roms/u-boot/board/pb1x00/README +++ /dev/null @@ -1,63 +0,0 @@ -By Thomas.Lange@corelatus.se 2004-Oct-05 ----------------------------------------- -DbAu1xx0 are development boards from AMD containing -an Alchemy AU1xx0 series cpu with mips32 core. -Existing cpu:s are Au1000, Au1100, Au1500 and Au1550 - -Limitations & comments ----------------------- -Support was originally big endian only. -I have not tested, but several u-boot users report working -configurations in little endian mode. - -I named the board dbau1x00, to allow -support for all three development boards -( dbau1000, dbau1100 and dbau1500 ). -Now there is a new board called dbau1550 also, which -should be supported RSN. - -I only have a dbau1000, so my testing is limited -to this board. - -The board has two different flash banks, that can -be selected via dip switch. This makes it possible -to test new bootloaders without thrashing the YAMON -boot loader delivered with board. - -NOTE! When you switch between the two boot flashes, the -base addresses will be swapped. -Have this in mind when you compile u-boot. CONFIG_SYS_TEXT_BASE has -to match the address where u-boot is located when you -actually launch. - -Ethernet only supported for mac0. - -PCMCIA only supported for slot 0, only 3.3V. - -PCMCIA IDE tested with Sandisk Compact Flash and -IBM microdrive. - -################################### -######## NOTE!!!!!! ######### -################################### -If you partition a disk on another system (e.g. laptop), -all bytes will be swapped on 16bit level when using -PCMCIA and running cpu in big endian mode!!!! - -This is probably due to an error in Au1000 chip. - -Solution: - -a) Boot via network and partition disk directly from -dbau1x00. The endian will then be correct. - -b) Partition disk on "laptop" and fill it with all files -you need. Then write a simple program that endian swaps -whole disk, - -Example: -Original "laptop" byte order: -B0 B1 B2 B3 B4 B5 B6 B7 B8 B9... - -Dbau1000 byte order will then be: -B1 B0 B3 B2 B5 B4 B7 B6 B9 B8... |