This implements preliminary support for the L2 caches found
on newer SH-4A CPUs.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Encode processor flags in AT_HWCAP in the ELF auxiliary vector.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds support for the aforementioned CPU subtypes, and cleans
up some build issues encountered as a result.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Add CPU_HAS_PTEA, refactor some of the cpu flag settings.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Merge support for SH7770 and SH7780 SH-4A subtypes.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Newer SH7760 cuts have a range of acceptable PRR values..
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This reworks some of the SH-4 cache handling code to more easily
accomodate newer-style caches (particularly for the > direct-mapped
case), as well as optimizing some of the old code.
Signed-off-by: NRichard Curnow <richard.curnow@st.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!