Re: [PATCH 00/11] ppc/e500: Add support for two types of flash, cleanup

[Bernhard Beschow <shentey@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 2082 bytes --]

On Fri, Sep 16, 2022 at 5:27 PM Bin Meng <bmeng.cn@gmail.com> wrote:

> Hi Bernhard,
>

Hi Bin,


> On Thu, Sep 15, 2022 at 11:25 PM Bernhard Beschow <shentey@gmail.com>
> wrote:
> >
> > This series adds support for -pflash and direct SD card access to the
> > PPC e500 boards. The idea is to increase compatibility with "real"
> firmware
> > images where only the bare minimum of drivers is compiled in.
> >
> > The series is structured as follows:
> >
> > Patches 1-3 perform some general cleanup which paves the way for the
> rest of
> > the series.
> >
> > Patches 4-7 add -pflash handling where memory-mapped flash can be added
> on
> > user's behalf. That is, the flash memory region is only added if the
> -pflash
> > argument is supplied. Note that the cfi01 device model becomes stricter
> in
> > checking the size of the emulated flash space.
> >
> > Patches 8-11 add a new device model - the Freescale eSDHC - to the e500
> > boards which was missing so far.
> >
> > User documentation is also added as the new features become available.
> >
> > Tesing done:
> > * `qemu-system-ppc -M ppce500 -cpu e500mc -m 256 -kernel uImage -append
> > "console=ttyS0 rootwait root=/dev/mtdblock0 nokaslr" -drive
> > if=pflash,file=rootfs.ext2,format=raw`
> > * `qemu-system-ppc -M ppce500 -cpu e500mc -m 256 -kernel uImage -append
> > "console=ttyS0 rootwait root=/dev/mmcblk0" -device sd-card,drive=mydrive
> -drive
> > id=mydrive,if=none,file=rootfs.ext2,format=raw`
>
> Thanks for the patches!
>

My obligation!


> Did you get a chance to test the U-Boot image to work with pflash and
> eSDHC?
>

 No, unfortunately not. Testing U-Boot would involve familiarizing myself
with it first which will probably come at some point. Right now, however,
my focus is on running a proprietary firmware flash image.

Best regards,
Bernhard

> >
> > The load was created using latest Buildroot with `make
> > qemu_ppc_e500mc_defconfig` where the rootfs was configured to be of ext2
> type.
> > In both cases it was possible to log in and explore the root file system.
> >
>
> Regards,
> Bin
>

[-- Attachment #2: Type: text/html, Size: 3218 bytes --]