ARM: platform support for Apple M1

The Apple M1 is the processor used it all current generation Apple
Macintosh computers. Support for this platform so far is rudimentary,
but it boots and can use framebuffer and serial console over a special
USB cable.

Support for several essential on-chip devices (USB, PCIe, IOMMU, NVMe)
is work in progress but was not ready in time.

A very detailed description of what works is in the merge commit
and on the AsahiLinux wiki.

Link: https://lore.kernel.org/linux-arm-kernel/bdb18e9f-fcd7-1e31-2224-19c0e5090706@marcan.st/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
asm-generic/io.h: Unbork ioremap_np() declaration

It accidentally slipped into the #ifdef for ioremap_uc().

Signed-off-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20210409052038.58925-1-marcan@marcan.st'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
1 file changed