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| H A D | cortex_a72.S | 989960cf94cfb8d62b91a1653525bd93800b0f95 Wed Apr 12 17:35:45 UTC 2023 Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> refactor(cpus): convert the Cortex-A72 to use the errata framework
This involves replacing:
* the reset_func with the standard cpu_reset_func_{start,end} to apply
errata automatically
* the <cpu>_errata_report with the errata_report_shim to report errata
automatically
...and for each erratum:
* the prologue with the workaround_<type>_start to do the checks and
framework registration automatically
* the epilogue with the workaround_<type>_end
* the checker function with the check_erratum_<type> to make it more
descriptive
It is important to note that the errata workaround sequences remain
unchanged and preserve their git blame.
Testing was conducted by:
* Building for release with all errata flags enabled and running
script in change 19136 to compare output of objdump for each errata.
* Testing via script was not complete, as it directed to verify the
check and the workaround functions of few erratas manually.
* Manual comparison of disassembly of converted functions with non-
converted functions
aarch64-none-elf-objdump -D <trusted-firmware-a with conversion>/build/../release/bl31/bl31.elf
vs
aarch64-none-elf-objdump -D <trusted-firmware-a clean repo>/build/fvp/release/bl31/bl31.elf
* Manual comparison of disassembly of both both files(bl31.elf)
ensured,the ported changes were identical and hence verified.
* Build for release with all errata flags enabled and run default tftf
tests.
CROSS_COMPILE=aarch64-none-elf- \
make PLAT=fvp \
ARCH=aarch64 \
DEBUG=0 \
HW_ASSISTED_COHERENCY=1 \
USE_COHERENT_MEM=0 \
CTX_INCLUDE_AARCH32_REGS=0 \
ERRATA_A72_859971=1 \
ERRATA_A72_1319367=1 \
WORKAROUND_CVE_2017_5715=1 \
WORKAROUND_CVE_2018_3639=1 \
WORKAROUND_CVE_2022_23960=1 \
BL33=/home/jaychi01/tf_a/tf-a-tests/build/fvp/release/tftf.bin \
fip all -j12
* Build for debug with all errata enabled and step through ArmDS
at reset to ensure that if Errata are applicable then the workaround
functions are entered precisely.
Change-Id: I8ee5288f395b0391a242506e7effdb65ab4c4de7
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
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