On 01/05/2012 12:16 PM, Wolfgang Denk wrote:
In message 4F05D596.6030900@nvidia.com you wrote:
...
The libraries included in the toolchain are built for the ARMv7 CPUs,
SO this is not the right tool chain for the job. Ecactly what I said.
and hence fail to operate correctly when used by the portion of U-Boot which runs on the ARMv4 CPU, presumably due to ISA differences. IIRC, there are overrides in the U-Boot build process such that some/all of U-Boot is built so it'll run on ARMv4 OK, which is why using libgcc built by U-Boot solves this.
No, this is NOT a solution, it is a workaround for an inappropriate toolchain. If you want to build code for an armv4t system, you must use a tool chain that supports it.
But we don't want to generate code for ARMv4 in general, but rather ARMv7 as the toolchain does. Only a tiny part of the code needs to be built for ARMv4, and in general we want to benefit from using ARMv7.