[U-Boot] [PATCH v2 0/7] Small fixes for RISC-V

[Lukas Auer]

This patch series contains small fixes for RISC-V. It touches three
areas.

- Patch 1 clarifies the error message on undefined exceptions.
- Patch 2 removes the current dcache flush implementation. It uses the
fence instruction, which does not directly affect the data cache and can
therefore not be used to implement dcache flush and invalidation.
- Patches 3-6 improve support for standalone applications. They add
support for RV64I systems and fix a problem, where a callee-saved
register is used without saving it beforehand. Patch 6 defines the
standalone load address for qemu-riscv to allow it to run standalone
applications.

Changes in v2:
- Replace patch "riscv: remove invalid dcache flush implementation" with
new patch "riscv: move the AX25-specific implementation of
flush_dcache_all"
- New patch "riscv: use invalidate/flush_*cache_range functions in
cache.c"

Lukas Auer (7):
  riscv: clarify error message on undefined exceptions
  riscv: move the AX25-specific implementation of flush_dcache_all
  riscv: use invalidate/flush_*cache_range functions in cache.c
  riscv: remove RISC-V standalone linker script
  riscv: replace use of callee-saved register in standalone
  riscv: support standalone applications on RV64I systems
  riscv: qemu: define standalone load address

 arch/riscv/config.mk          |  3 +--
 arch/riscv/cpu/ax25/cache.c   | 22 +++++++++++++++++++
 arch/riscv/lib/cache.c        | 14 ++++++------
 arch/riscv/lib/interrupts.c   |  3 ++-
 examples/standalone/riscv.lds | 40 -----------------------------------
 examples/standalone/stubs.c   | 21 +++++++++++++-----
 include/configs/qemu-riscv.h  |  2 ++
 7 files changed, 49 insertions(+), 56 deletions(-)
 delete mode 100644 examples/standalone/riscv.lds

-- 
2.20.1