Peter Hoyes 8d78a6b674 vexpress64: Add ARMv8R-64 board variant
The ARMv8-R64 architecture introduces optional VMSA (paging based MMU)
support in the EL1/0 translation regime, which makes that part mostly
compatible to ARMv8-A.

Add a new board variant to describe the "BASE-R64" FVP model, which
inherits a lot from the existing v8-A FVP support. One major difference
is that the memory map in "inverted": DRAM starts at 0x0, MMIO is at
2GB [1].

 * Create new TARGET_VEXPRESS64_BASER_FVP target, sharing most of the
   exising configuration.
 * Implement inverted memory map in vexpress_aemv8.h
 * Create vexpress_aemv8r defconfig
 * Provide an MMU memory map for the BASER_FVP
 * Update vexpress64 documentation

At the moment the boot-wrapper is the only supported secure firmware. As
there is no official DT for the board yet, we rely on it being supplied
by the boot-wrapper into U-Boot, so use OF_HAS_PRIOR_STAGE, and go with
a dummy DT for now.

[1] https://developer.arm.com/documentation/100964/1114/Base-Platform/Base---memory/BaseR-Platform-memory-map

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
[Andre: rebase and add Linux kernel header]
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[trini: Add MAINTAINERS entry for Peter]
2022-04-01 15:03:03 -04:00
..
2022-03-28 20:16:46 +02:00
2022-03-07 11:36:12 -05:00
2021-11-07 18:36:55 +01:00
2021-09-07 16:22:30 -04:00
2022-01-19 18:11:34 +01:00
2022-03-28 12:36:49 -04:00
2021-10-27 16:38:26 -04:00
2021-09-04 11:42:41 -04:00
2021-09-07 16:22:30 -04:00
2021-12-20 17:12:04 -05:00
2022-03-28 20:16:46 +02:00
2022-03-26 00:16:06 +00:00
2022-03-14 17:40:36 -04:00
2022-01-08 11:16:03 -05:00