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64134f0112
With recent toolchain versions, some boards would not build because or errors like this one (here for ocotea board when building with ELDK 4.2 beta): ppc_4xx-ld: section .bootpg [fffff000 -> fffff23b] overlaps section .bss [fffee900 -> fffff8ab] For many boards, the .bss section is big enough that it wraps around at the end of the address space (0xFFFFFFFF), so the problem will not be visible unless you use a 64 bit tool chain for development. On some boards however, changes to the code size (due to different optimizations) we bail out with section overlaps like above. The fix is to add the NOLOAD attribute to the .bss and .sbss sections, telling the linker that .bss does not consume any space in the image. Signed-off-by: Wolfgang Denk <wd@denx.de> |
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| .. | ||
| config.mk | ||
| flash.c | ||
| lowlevel_init.S | ||
| Makefile | ||
| pb1x00.c | ||
| README | ||
| u-boot.lds | ||
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. 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...