Rebuild PMUFW and load it
This post describes how to rebuild PMUFW in PetaLinux Tools 2017.4.
Prerequisites
-
An installation of PetaLinux Tools 2017.4 - HOWTO
-
A PetaLinux Tools ZU+ project that’s been built - HOWTO
Steps
1. Access bitbake
source $PETALINUX_TOOLS_INSTALL_DIR/components/yocto/source/aarch64/environment-setup-aarch64-xilinx-linux
cd $PETALINUX_PROJS_DIR/$PETALINUX_PROJ_NAME
source $PETALINUX_TOOLS_INSTALL_DIR/components/yocto/source/aarch64/layers/core/oe-init-build-env
export BB_ENV_EXTRAWHITE="$BB_ENV_EXTRAWHITE PETALINUX"
Note: I fairly certain you must use bitbake because you can’t pass pmufw to petalinux-build via the “-c” option.
2. Make a change in:
$PETALINUX_PROJS_DIR/$PETALINUX_PROJ_NAME/components/plnx_workspace/pmufw/pmu-firmware/src/
Note:
The source gets copied from:
$PETALINUX/tools/hsm/data/embeddedsw/lib/sw_apps/zynqmp_pmufw/src/
…to:
$PETALINUX_PROJS_DIR/$PETALINUX_PROJ_NAME/components/plnx_workspace/pmufw/pmu-firmware/src/
…when a configure is run:
bitbake pmu-firmware -c configure -C configure
Warning:
Your changes in:
$PETALINUX_PROJS_DIR/$PETALINUX_PROJ_NAME/components/plnx_workspace/pmufw/pmu-firmware/src/
…will be overwritten if you do a configure
3. Rebuild PMUFW
bitbake pmu-firmware -c compile -C compile
4. Copy the result to the output directory
cp ../components/plnx_workspace/pmufw/pmu-firmware/Release/pmu-firmware.elf ../images/linux/pmufw.elf
5. Load it
connect -url tcp:localhost:3121
targets -set -nocase -filter {name =~ "*PSU*"}
stop
rst -system
after 2000
targets -set -nocase -filter {name =~ "*PMU*"}
stop
rst -system
after 2000
targets -set -nocase -filter {name =~ "*PSU*"}
stop
rst -system
after 2000
mwr 0xFFCA0038 0x1ff
targets -set -nocase -filter {name =~ "*MicroBlaze PMU*"}
dow pmufw.elf
after 2000
con
XSCT Output
xsct% targets
2 PS TAP
3 PMU
14 MicroBlaze PMU (Sleeping. No clock)
References
