35% Faster FSBL Rebuild
This post shows how to rebuild the Xilinx Zynq MP First Stage Boot Loader (FSBL) from PetaLinux Tools 2017.4 in 35% less time with bitbake. It also shows hot to load it over JTAG and reviews commands that do not recompile the FSBL.
Prerequisite
-
An installation of PetaLinux Tools 2017.4 - HOWTO
-
A PetaLinux Tools ZU+ project that’s been built - HOWTO
Fastest Way (bitbake) - 35% faster
Get access to bitbake
source $PETALINUX_TOOLS_INSTALL_DIR/components/yocto/source/aarch64/environment-setup-aarch64-xilinx-linux
echo "Changing directory from $PWD to $PETALINUX_PROJS_DIR/$PETALINUX_PROJ_NAME"
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"
which bitbake
Make a change to:
components/plnx_workspace/fsbl/fsbl/src/xfsbl_main.c
…like:
XFsbl_Printf(DEBUG_PRINT_ALWAYS,
"Release %d.%d %s - %s\r\n",
SDK_RELEASE_YEAR, SDK_RELEASE_QUARTER,__DATE__,__TIME__);
XFsbl_Printf(DEBUG_PRINT_ALWAYS,
"Hello!\n\r");
Rebuild
bitbake virtual/fsbl -c compile -C compile
Time taken on my machine:
real 1m21.337s
user 0m21.546s
sys 0m4.469s
“Package”
cp ../components/plnx_workspace/fsbl/fsbl/Release/fsbl.elf ../images/linux/zynqmp_fsbl.elf
Time taken on my machine:
real 0m0.004s
user 0m0.002s
sys 0m0.000s
Load the FSBL
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 /home/pfefferz/build/out/pmufw.elf
after 2000
con
targets -set -nocase -filter {name =~ "*APU*"}
mwr 0xffff0000 0x14000000
mwr 0xFD1A0104 0x501
after 2000
mwr 0xFD1A0104 0x0
after 2000
targets -set -nocase -filter {name =~ "*A53*#0"}
source /home/pfefferz/build/out/psu_init.tcl
dow /home/pfefferz/build/out/zynqmp_fsbl.elf
after 2000
con
See the results on a serial port
Xilinx Zynq MP First Stage Boot Loader
Release 2017.4 Jun 3 2018 - 21:43:02
Hello!
Total Time:1:21
Fast Way (petalinux-build)
Rebuild
petalinux-build -c bootloader -x compile -f
Time taken on my machine
real 1m34.931s
user 0m28.377s
sys 0m5.907s
Package
petalinux-build -c bootloader -x deploy -f
Time taken on my machine
real 0m44.025s
user 0m27.110s
sys 0m5.846s
Total Time: 2:19
Ways that Do Not Recompile The FSBL
petalinux-build -c bootloader
Comment
I feel that this is wrong. My expectation is that if a change is made to the FSBL source that this command should rebuild it.
Reference
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