powerpc/amigaone: Add platform support for AmigaOne

This commit adds the setup code for booting Linux on AmigaOne G3SE (G3
only), AmigaOne XE and uA1 (G3/G4) desktop computers. These boards were
sold by Eyetech and are based on MAI Logic's Teron boards and its
Articia S northbridge.
The AmigaOne uses U-boot as firmware, which doesn't support a flattened
device tree yet. The northbridge has some design flaws, which makes it
necessary to use non cacheable memory for DMA operations
(CONFIG_NOT_COHERENT_CACHE) and to avoid setting the coherence (M) flag
for memory pages.

Signed-off-by: Gerhard Pircher <gerhard_pircher@gmx.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/amigaone/Kconfig b/arch/powerpc/platforms/amigaone/Kconfig
new file mode 100644
index 000000000000..9276a96cedee
--- /dev/null
+++ b/arch/powerpc/platforms/amigaone/Kconfig
@@ -0,0 +1,18 @@
+config AMIGAONE
+        bool "Eyetech AmigaOne/MAI Teron"
+        depends on PPC32 && BROKEN_ON_SMP && PPC_MULTIPLATFORM
+        select PPC_I8259
+        select PPC_INDIRECT_PCI
+        select PPC_UDBG_16550
+        select PCI
+        select NOT_COHERENT_CACHE
+        select CHECK_CACHE_COHERENCY
+        select DEFAULT_UIMAGE
+        select PCSPKR_PLATFORM
+        help
+        Select AmigaOne for the following machines:
+        - AmigaOne SE/Teron CX (G3 only)
+        - AmigaOne XE/Teron PX
+        - uA1/Teron mini
+          More information is available at:
+          <http://amigaone-linux.sourceforge.net/>.