Commit Graph

5 Commits

Author SHA1 Message Date
Sumit Garg
03fb0958c9 qemu-arm: Add persistent environment support
Currently on qemu-arm platforms environment is kept in RAM. Instead
use pflash device 1 to provide persistent environment support across
device reset.

Also (optionally) provide support for persistent environment across
qemu machine OFF/ON using following instructions:

- Create envstore.img using qemu-img:
    qemu-img create -f raw envstore.img 64M
- Add a pflash drive parameter to the command line:
    -drive if=pflash,format=raw,index=1,file=envstore.img

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
2018-12-12 12:14:21 -05:00
Tuomas Tynkkynen
9792be7d93 doc: qemu-arm: Drop highmem=off references
Now that U-Boot works fine with highmem enabled, there is no need to
tell users to disable highmem.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-05-26 12:46:50 -04:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Tuomas Tynkkynen
e7ba41c653 ARM: Document AArch64 version of qemu-arm
It's mostly obvious, except that QEMU is annoying and requires an
explicit '-cpu cortex-a57' (or some other 64-bit core) to actually run
in 64-bit mode.

While at it, remove the references to setting the ARCH environment
variable; that is not used in U-Boot.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-19 15:49:31 -05:00
Tuomas Tynkkynen
d5587fa308 ARM: Add documentation for the qemu-arm board
Add brief documentation for the recently merged qemu-arm board.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
2017-10-16 09:42:51 -04:00