diff options
Diffstat (limited to 'src/arch/arm64/include')
| -rw-r--r-- | src/arch/arm64/include/arch/startup.h | 3 | ||||
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/lib_helpers.h | 12 |
2 files changed, 14 insertions, 1 deletions
diff --git a/src/arch/arm64/include/arch/startup.h b/src/arch/arm64/include/arch/startup.h index bb3a863754..671c13e4cb 100644 --- a/src/arch/arm64/include/arch/startup.h +++ b/src/arch/arm64/include/arch/startup.h @@ -29,8 +29,9 @@ #define TTBR0_INDEX 2 #define SCR_INDEX 3 #define VBAR_INDEX 4 +#define CNTFRQ_INDEX 5 /* IMPORTANT!!! If any new element is added please update NUM_ELEMENTS */ -#define NUM_ELEMENTS 5 +#define NUM_ELEMENTS 6 #ifndef __ASSEMBLY__ diff --git a/src/arch/arm64/include/armv8/arch/lib_helpers.h b/src/arch/arm64/include/armv8/arch/lib_helpers.h index 1e04d48cfa..bb7300f2b7 100644 --- a/src/arch/arm64/include/armv8/arch/lib_helpers.h +++ b/src/arch/arm64/include/armv8/arch/lib_helpers.h @@ -261,6 +261,16 @@ 402: .endm +/* Macro to read from an el0 register */ +.macro read_el0 xreg sysreg + mrs \xreg, \sysreg\()_el0 +.endm + +/* Macro to write to an el0 register */ +.macro write_el0 sysreg xreg temp + msr \sysreg\()_el0, \xreg +.endm + /* Macro to invalidate all stage 1 TLB entries for current EL */ .macro tlbiall_current temp switch_el \temp, 401f, 402f, 403f @@ -547,6 +557,8 @@ uint64_t raw_read_vbar_current(void); void raw_write_vbar_current(uint64_t vbar); uint64_t raw_read_vbar(uint32_t el); void raw_write_vbar(uint64_t vbar, uint32_t el); +uint32_t raw_read_cntfrq_el0(void); +void raw_write_cntfrq_el0(uint32_t cntfrq_el0); /* Cache maintenance system instructions */ void dccisw(uint64_t cisw); |