Optimize EL3 register state stored in cpu_context structure
This patch further optimizes the EL3 register state stored in
cpu_context. The 2 registers which are removed from cpu_context are:
* cntfrq_el0 is the system timer register which is writable
only in EL3 and it can be programmed during cold/warm boot. Hence
it need not be saved to cpu_context.
* cptr_el3 controls access to Trace, Floating-point, and Advanced
SIMD functionality and it is programmed every time during cold
and warm boot. The current BL3-1 implementation does not need to
modify the access controls during normal execution and hence
they are expected to remain static.
Fixes ARM-software/tf-issues#197
Change-Id: I599ceee3b73a7dcfd37069fd41b60e3d397a7b18
diff --git a/include/bl31/context.h b/include/bl31/context.h
index 3bf4980..0dfebe0 100644
--- a/include/bl31/context.h
+++ b/include/bl31/context.h
@@ -80,9 +80,7 @@
#define CTX_RUNTIME_SP 0x8
#define CTX_SPSR_EL3 0x10
#define CTX_ELR_EL3 0x18
-#define CTX_CPTR_EL3 0x20
-#define CTX_CNTFRQ_EL0 0x28
-#define CTX_EL3STATE_END 0x30
+#define CTX_EL3STATE_END 0x20
/*******************************************************************************
* Constants that allow assembler code to access members of and the
@@ -323,8 +321,6 @@
/*******************************************************************************
* Function prototypes
******************************************************************************/
-void el3_sysregs_context_save(el3_state_t *regs);
-void el3_sysregs_context_restore(el3_state_t *regs);
void el1_sysregs_context_save(el1_sys_regs_t *regs);
void el1_sysregs_context_restore(el1_sys_regs_t *regs);
#if CTX_INCLUDE_FPREGS