feat(ls64): add LS64_ACCDATA test
FEAT_LS64_ACCDATA introduces the system register ACCDATA_EL1, its value
replacing the first four bytes of the data provided to an ST64BV0
instruction. As this system register would need context switching
between non-secure and secure worlds, there is an SCR_EL3 bit to allow
trapping accesses from lower ELs into EL3.
Introduce a check to verify that accesses to this system register do not
trap into EL3, if the CPUID registers advertise this feature.
Bits[63:32] of ACCDATA_EL1 are described as RES0, so mask those bits
when comparing the read-back values with the written one.
Change-Id: Ia32bcf7187356c701470a1757708b3d554e88629
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index 455ae27..744bbe6 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -230,6 +230,8 @@
DEFINE_SYSOP_PARAM_FUNC(wfit)
DEFINE_SYSOP_PARAM_FUNC(wfet)
+DEFINE_RENAME_SYSREG_RW_FUNCS(sys_accdata_el1, SYS_ACCDATA_EL1)
+
static inline void enable_irq(void)
{
/*