feat(fvp_r): configure system registers to boot rich OS
Following system registers are modified before exiting EL2 to allow
u-boot/Linux to boot
1. CNTHCTL_EL2.EL1PCTEN -> 1
Allows U-boot to use physical counters at EL1
2. VTCR_EL2.MSA -> 1
Enables VMSA at EL1, which is required by U-Boot and Linux.
3. HCR_EL2.APK = 1 & HCR_EL2.API = 1
Disables PAuth instruction and register traps in EL1
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I58f45b6669a9ad1debb80265b243015c054a9bb1
diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 72b87c8..359ac76 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -442,6 +442,8 @@
DEFINE_SYSREG_READ_FUNC(cntpct_el0)
DEFINE_SYSREG_RW_FUNCS(cnthctl_el2)
+DEFINE_SYSREG_RW_FUNCS(vtcr_el2)
+
#define get_cntp_ctl_enable(x) (((x) >> CNTP_CTL_ENABLE_SHIFT) & \
CNTP_CTL_ENABLE_MASK)
#define get_cntp_ctl_imask(x) (((x) >> CNTP_CTL_IMASK_SHIFT) & \