Michal Orzel 4fa2272458 xen/arm: debug-pl011: Add support for 32-bit only MMIO ...

There are implementations of PL011 that can only handle 32-bit accesses
as oppose to the normal behavior where accesses are 8/16-bit wide. This
is usually advertised by setting a dt property 'reg-io-width' to 4.

Introduce CONFIG_EARLY_UART_PL011_MMIO32 Kconfig option to be able to
enable the use of 32-bit only accessors in PL011 early printk code.
Define macros PL011_{STRH,STRB,LDRH} to distinguish accessors for normal
case from 32-bit MMIO one and use them in arm32/arm64 pl011 early printk
code.

Update documentation accordingly.

Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Tested-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

2023-06-19 12:20:11 -07:00

..

device-tree

xen/arm: add sve property for dom0less domUs

2023-06-07 11:21:41 +01:00

big.LITTLE.txt

xen/arm: update the docs about heterogeneous computing

2018-03-06 11:32:51 -08:00

booting.txt

xen/arm: Add support for booting gzip compressed uImages

2023-02-08 13:57:57 +00:00

early-printk.txt

xen/arm: debug-pl011: Add support for 32-bit only MMIO

2023-06-19 12:20:11 -07:00

passthrough-noiommu.txt

xen/arm, device-tree: Make static-mem use #{address,size}-cells

2022-09-09 13:49:02 -07:00

passthrough.txt

docs/misc/arm: Update references to Linux kernel docs

2022-12-01 10:43:05 +00:00

silicon-errata.txt

xen/arm: Add workaround for Cortex-A53 erratum #843419

2020-12-16 17:56:33 -08:00