diff options
| author | Peter Hoyes | 2022-03-04 16:30:18 +0000 |
|---|---|---|
| committer | Tom Rini | 2022-04-01 15:03:03 -0400 |
| commit | 8d78a6b67467145f7e02295ca5d4944251dbc645 (patch) | |
| tree | d7740ca3f69063f5ed0e37eed78dc222c529a381 /arch/arm/dts | |
| parent | 1a1143a45457161e90ea4cd5f3b0561d924ed8fe (diff) | |
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]
Diffstat (limited to 'arch/arm/dts')
| -rw-r--r-- | arch/arm/dts/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/dts/arm_fvp.dts | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile index fe726d422be..99dc7bc7773 100644 --- a/arch/arm/dts/Makefile +++ b/arch/arm/dts/Makefile @@ -1186,6 +1186,7 @@ dtb-$(CONFIG_TARGET_MX53PPD) += imx53-ppd.dtb # Kconfig option to build all of these. See examples above. dtb-$(CONFIG_TARGET_VEXPRESS_CA9X4) += vexpress-v2p-ca9.dtb dtb-$(CONFIG_TARGET_VEXPRESS64_BASE_FVP) += fvp-base-revc.dtb +dtb-$(CONFIG_TARGET_VEXPRESS64_BASER_FVP) += arm_fvp.dtb dtb-$(CONFIG_TARGET_VEXPRESS64_JUNO) += juno-r2.dtb dtb-$(CONFIG_TARGET_TOTAL_COMPUTE) += total_compute.dtb diff --git a/arch/arm/dts/arm_fvp.dts b/arch/arm/dts/arm_fvp.dts new file mode 100644 index 00000000000..3a4ad5d1801 --- /dev/null +++ b/arch/arm/dts/arm_fvp.dts @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0+ OR MIT +/* + * Empty device tree for the Arm Ltd FVP platform model + + * Copyright 2022 Arm Ltd. + */ + +/dts-v1/; + +/ { +}; |