On Wed, Sep 13, 2023 at 03:24:53PM +0200, Ahmad Fatoum wrote:
> The ZynqMP features eight 32-bit global storage registers that are
> available for general use. Four of them have their values preserved
> after software reboots and four are cleared on software reboots.
>
> In Linux they are accessed as:
>
> /sys/firmware/zynqmp/ggs[0-4]
> /sys/firmware/zynqmp/pggs[0-4]
>
> Allow reading and writing these parameters from barebox board code
> via exported functions and from barebox shell as well via device
> parameters:
>
> echo ${firmware:zynqmp-firmware.of.ggs0}
> firmware:zynqmp-firmware.of.pggs0=4
>
> Because the name is a bit unwieldy, use the device alias support added
> in this series to make the variables more compact:
>
> echo ${zynqmp_fw.ggs0}
> zynqmp_fw.pggs0=4
>
> Ahmad Fatoum (3):
> driver: add support for device aliases
> firmware-zynqmp: export functions for setting GGS/PGGS
> firmware-zynqmp: add device parameters for ggs/pggs
Applied, thanks
Sascha
>
> arch/arm/mach-zynqmp/firmware-zynqmp.c | 133 +++++++++++++++++++++++++
> common/complete.c | 14 ++-
> drivers/base/driver.c | 46 +++++++++
> include/driver.h | 7 ++
> include/mach/zynqmp/firmware-zynqmp.h | 33 +++++-
> 5 files changed, 222 insertions(+), 11 deletions(-)
>
> --
> 2.39.2
>
>
>
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