diff options
| author | Yen Lin <yelin@nvidia.com> | 2015-03-24 11:15:10 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-22 08:48:10 +0200 |
| commit | 900059a2236424ca70cb29cc4af3ac5cf47712fd (patch) | |
| tree | 1d53444b2823ba2d19e1a68ad905725e6ed46464 /src/arch/arm64/include/armv8 | |
| parent | f7c5c610a2563971461bbc066117d185022df0f5 (diff) | |
arch/arm64: allow floating-point registers access
BRANCH=None
BUG=None
TEST=build coreboot, make sure there are fmov instructions
generated by the compiler, and boot to kernel
Change-Id: Ia99c710be77d5baec7a743a726257ef3ec782635
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f770a436a0692c8e57a8c80860a180330b71e82c
Original-Change-Id: Iab4ba979b483d19fe92b8a75d9b881a57985eed7
Original-Signed-off-by: Yen Lin <yelin@nvidia.com>
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/262242
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9884
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/arch/arm64/include/armv8')
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/lib_helpers.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/arch/arm64/include/armv8/arch/lib_helpers.h b/src/arch/arm64/include/armv8/arch/lib_helpers.h index ba41f45440..1e04d48cfa 100644 --- a/src/arch/arm64/include/armv8/arch/lib_helpers.h +++ b/src/arch/arm64/include/armv8/arch/lib_helpers.h @@ -126,6 +126,28 @@ #define SCTLR_LITTLE_END (0 << SCTLR_ENDIAN_SHIFT) #define SCTLR_BIG_END (1 << SCTLR_ENDIAN_SHIFT) +#define CPTR_EL3_TCPAC_SHIFT (31) +#define CPTR_EL3_TTA_SHIFT (20) +#define CPTR_EL3_TFP_SHIFT (10) +#define CPTR_EL3_TCPAC_DISABLE (0 << CPTR_EL3_TCPAC_SHIFT) +#define CPTR_EL3_TCPAC_ENABLE (1 << CPTR_EL3_TCPAC_SHIFT) +#define CPTR_EL3_TTA_DISABLE (0 << CPTR_EL3_TTA_SHIFT) +#define CPTR_EL3_TTA_ENABLE (1 << CPTR_EL3_TTA_SHIFT) +#define CPTR_EL3_TFP_DISABLE (0 << CPTR_EL3_TFP_SHIFT) +#define CPTR_EL3_TFP_ENABLE (1 << CPTR_EL3_TFP_SHIFT) + +#define CPACR_TTA_SHIFT (28) +#define CPACR_TTA_ENABLE (1 << CPACR_TTA_SHIFT) +#define CPACR_TTA_DISABLE (0 << CPACR_TTA_SHIFT) +#define CPACR_FPEN_SHIFT (20) +/* + * ARMv8-A spec: Values 0b00 and 0b10 both seem to enable traps from el0 and el1 + * for fp reg access. + */ +#define CPACR_TRAP_FP_EL0_EL1 (0 << CPACR_FPEN_SHIFT) +#define CPACR_TRAP_FP_EL0 (1 << CPACR_FPEN_SHIFT) +#define CPACR_TRAP_FP_DISABLE (3 << CPACR_FPEN_SHIFT) + #ifdef __ASSEMBLY__ /* Macro to switch to label based on current el */ |