Initialise CPU contexts from entry_point_info
Consolidate all BL3-1 CPU context initialization for cold boot, PSCI
and SPDs into two functions:
* The first uses entry_point_info to initialize the relevant
cpu_context for first entry into a lower exception level on a CPU
* The second populates the EL1 and EL2 system registers as needed
from the cpu_context to ensure correct entry into the lower EL
This patch alters the way that BL3-1 determines which exception level
is used when first entering EL1 or EL2 during cold boot - this is now
fully determined by the SPSR value in the entry_point_info for BL3-3,
as set up by the platform code in BL2 (or otherwise provided to BL3-1).
In the situation that EL1 (or svc mode) is selected for a processor
that supports EL2, the context management code will now configure all
essential EL2 register state to ensure correct execution of EL1. This
allows the platform code to run non-secure EL1 payloads directly
without requiring a small EL2 stub or OS loader.
Change-Id: If9fbb2417e82d2226e47568203d5a369f39d3b0f
diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index 1ca3350..673e897 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -262,6 +262,9 @@
DEFINE_SYSREG_RW_FUNCS(tpidr_el3)
+DEFINE_SYSREG_RW_FUNCS(vpidr_el2)
+DEFINE_SYSREG_RW_FUNCS(vmpidr_el2)
+
/* Implementation specific registers */
DEFINE_RENAME_SYSREG_RW_FUNCS(cpuectlr_el1, CPUECTLR_EL1)