tree 0ead4b9553a58ea931c72e409fba730367cf92d2
parent 18428a1afa8cde2ab2035d02d825e5f0f61b752a
author Moritz Fischer <moritzf@google.com> 1689621716 +0000
committer Arvind Ram Prakash <arvind.ramprakash@arm.com> 1691700593 -0500

refactor(cpus): convert Neoverse V2 to framework

For V2, 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 at reset or runtime
  - The epilogue with the workaround_<type>_end
  - The checker function with the check_erratum_<type> to check whether
    the erratum applies on the revision of the CPU.

It is important to note that the errata workaround sequences remain
unchanged and preserve their git blame.

Testing was conducted by:

 * Manual comparison of disassembly of converted functions with non-
   converted functions

   aarch64-none-elf-objdump -D <trusted-firmware-a with conversion>/build/fvp/release/bl31/bl31.elf
     vs
   aarch64-none-elf-objdump -D <trusted-firmware-a clean repo>/build/fvp/release/bl31/bl31.elf

 * Build for release with all errata flags enabled and run default tftf
   tests

   CROSS_COMPILE=aarch64-none-elf- make PLAT=fvp  CTX_INCLUDE_AARCH32_REGS=0 \
   HW_ASSISTED_COHERENCY=1 USE_COHERENT_MEM=0 \
   BL33=./../tf-a-tests/build/fvp/debug/tftf.bin \
   ERRATA_V2_2801372 WORKAROUND_CVE_2022_23960=1 ERRATA_ABI_SUPPORT=1 all fip

 * Build for debug with all errata enabled and step through ArmDS
   at reset to ensure all functions are entered.

Change-Id: Ic968844d6aabea3867189d747769ced8faa87e56
Signed-off-by: Moritz Fischer <moritzf@google.com>
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>