diff options
| author | Julius Werner <jwerner@chromium.org> | 2020-02-14 12:42:01 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-02-17 15:42:34 +0000 |
| commit | bf33b03acf27d79df9bf1bd8d5075b70196b1844 (patch) | |
| tree | 403c22abdb570c0956ce6655ab49dc8b7ce5f9a1 /payloads/libpayload/include/arm64/arch/lib_helpers.h | |
| parent | 6cf33858b64449ad6e22cd27ec5734a972b8f39e (diff) | |
libpayload: arm64: Keep instruction cache enabled at all times
This patch makes libpayload enable the instruction cache as the very
first thing, which is similar to how we treat it in coreboot. It also
prevents the icache from being disabled again during mmu_disable() as
part of the two-stage page table setup in post_sysinfo_scan_mmu_setup().
It replaces the existing mmu_disable() implementation with the assembly
version from coreboot which handles certain edge cases better (see
CB:27238 for details).
The SCTLR flag definitions in libpayload seem to have still been
copy&pasted from arm32, so replace with the actual arm64 defintions from
coreboot.
Change-Id: Ifdbec34f0875ecc69fedcbea5c20e943379a3d2d
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38908
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'payloads/libpayload/include/arm64/arch/lib_helpers.h')
| -rw-r--r-- | payloads/libpayload/include/arm64/arch/lib_helpers.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/payloads/libpayload/include/arm64/arch/lib_helpers.h b/payloads/libpayload/include/arm64/arch/lib_helpers.h index 7617f97426..b2e3a069e0 100644 --- a/payloads/libpayload/include/arm64/arch/lib_helpers.h +++ b/payloads/libpayload/include/arm64/arch/lib_helpers.h @@ -30,11 +30,29 @@ #ifndef __ARCH_LIB_HELPERS_H__ #define __ARCH_LIB_HELPERS_H__ +#define SCTLR_M (1 << 0) /* MMU enable */ +#define SCTLR_A (1 << 1) /* Alignment check enable */ +#define SCTLR_C (1 << 2) /* Data/unified cache enable */ +#define SCTLR_SA (1 << 3) /* Stack alignment check enable */ +#define SCTLR_NAA (1 << 6) /* non-aligned access STA/LDR */ +#define SCTLR_I (1 << 12) /* Instruction cache enable */ +#define SCTLR_ENDB (1 << 13) /* Pointer auth (data B) */ +#define SCTLR_WXN (1 << 19) /* Write permission implies XN */ +#define SCTLR_IESB (1 << 21) /* Implicit error sync event */ +#define SCTLR_EE (1 << 25) /* Exception endianness (BE) */ +#define SCTLR_ENDA (1 << 27) /* Pointer auth (data A) */ +#define SCTLR_ENIB (1 << 30) /* Pointer auth (insn B) */ +#define SCTLR_ENIA (1 << 31) /* Pointer auth (insn A) */ +#define SCTLR_RES1 ((0x3 << 4) | (0x1 << 11) | (0x1 << 16) | \ + (0x1 << 18) | (0x3 << 22) | (0x3 << 28)) + #define DAIF_DBG_BIT (1 << 3) #define DAIF_ABT_BIT (1 << 2) #define DAIF_IRQ_BIT (1 << 1) #define DAIF_FIQ_BIT (1 << 0) +#ifndef __ASSEMBLER__ + #include <stdint.h> #define MAKE_REGISTER_ACCESSORS(reg) \ @@ -273,4 +291,6 @@ static inline void tlbivaa_el1(uint64_t va) #define dsb() dsb_opt(sy) #define isb() isb_opt() +#endif /* __ASSEMBLER__ */ + #endif /* __ARCH_LIB_HELPERS_H__ */ |