tree dca2912030f085ea0d2aff8e64699aa1c086bbe5
parent 5b27ecfcb204fa511734619010aca4bbdc4fa0a4
author Arvind Ram Prakash <arvind.ramprakash@arm.com> 1687809940 -0500
committer Arvind Ram Prakash <arvind.ramprakash@arm.com> 1691095317 +0200

refactor(cpus): convert Neoverse N2 to 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:

 * 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_N2_2002655=1 ERRATA_N2_2025414=1 ERRATA_N2_2067956=1 ERRATA_N2_2189731=1 \
   ERRATA_N2_2138956=1 ERRATA_N2_2138953=1 ERRATA_N2_2242415=1 ERRATA_N2_2138958=1 \
   ERRATA_N2_2242400=1 ERRATA_N2_2280757=1 ERRATA_N2_2326639=1 ERRATA_N2_2376738=1 \
   ERRATA_N2_2388450=1 ERRATA_N2_2743014=1 ERRATA_N2_2743089=1 ERRATA_DSU_2313941=1 \
   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.

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I3dd06b5d827de5836eadd58ae28f28e62039f257