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refactor(context mgmt): remove registers accessible only from secure state from EL2 context

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The following registers are only accessible from secure state,
therefore don't need to be saved/restored during world switch.
 - SDER32_EL2
 - VSTCR_EL2
 - VSTTBR_EL2

This patch removes these registers from EL2 context.

Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I24d08aacb1b6def261c7b37d3e1265bb76adafdc
This commit is contained in:
Zelalem Aweke 2021-11-03 13:31:53 -05:00 • committed by Joanna Farley
parent 807d6d6217
commit 7f41bcc76d
2 changed files with 5 additions and 46 deletions
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13
include/lib/el3_runtime/aarch64/context.h
View file

@ -220,20 +220,17 @@
#define CTX_TTBR1_EL2 U(0x1a0)
#define CTX_VDISR_EL2 U(0x1a8)
#define CTX_VSESR_EL2 U(0x1b0)
#define CTX_VSTCR_EL2 U(0x1b8)
#define CTX_VSTTBR_EL2 U(0x1c0)
#define CTX_SDER32_EL2 U(0x1c8)
#define CTX_VNCR_EL2 U(0x1d0)
#define CTX_TRFCR_EL2 U(0x1d8)
#define CTX_VNCR_EL2 U(0x1b8)
#define CTX_TRFCR_EL2 U(0x1c0)
// Starting with Armv8.5
#define CTX_SCXTNUM_EL2 U(0x1e0)
#define CTX_SCXTNUM_EL2 U(0x1c8)
// Register for FEAT_HCX
#define CTX_HCRX_EL2 U(0x1e8)
#define CTX_HCRX_EL2 U(0x1d0)
/* Align to the next 16 byte boundary */
#define CTX_EL2_SYSREGS_END U(0x1f0)
#define CTX_EL2_SYSREGS_END U(0x1e0)
#endif /* CTX_INCLUDE_EL2_REGS */