Anup Patel ebc8ebc0f8 lib: sbi: Improve HPM CSR read/write emulation ...

We improve HPM CSR read/write emulation as follows:
1. Fail for unimplemented counters so that trap is redirected
   to S-mode which can further help debugging S-mode software.
2. Check permissions in both MCOUNTEREN and SCOUNTEREN for
   HS-mode and U-mode.
3. Don't check permissions for TIME CSR because we emulate
   TIME CSR for both Host (HS/U-mode) and Guest (VS/VU-mode).
   Also, faster TIME CSR read is very helpful for good
   performance of S-mode software.
4. Don't emulate S-mode CSR read/write to M-mode HPM CSRs
   because these should not be accessible to S-mode software.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

2020-09-01 10:28:35 +05:30

..

objects.mk

lib: Add platform features in boot time print

2020-05-10 10:24:08 +05:30

riscv_asm.c

lib: sbi: Improve PMP CSR detection and progamming

2020-09-01 10:28:28 +05:30

riscv_atomic.c

include: Use more consistent name for atomic xchg() and cmpxchg()

2020-03-28 13:32:38 +05:30

riscv_hardfp.S

lib: Move sbi core library to lib/sbi

2019-06-19 09:48:51 +05:30

riscv_locks.c

lib: Move sbi core library to lib/sbi

2019-06-19 09:48:51 +05:30

sbi_bitmap.c

lib: Simple bitmap library

2020-03-11 15:29:45 +05:30

sbi_bitops.c

lib: sbi: Fix coding style issues

2020-03-10 10:27:28 +05:30

sbi_console.c

include: sbi_console: Remove scratch parameter from sbi_dprintf()

2020-03-28 13:32:58 +05:30

sbi_ecall_base.c

lib: Allow overriding SBI implementation ID

2020-04-19 17:00:05 +05:30

sbi_ecall_hsm.c

lib: sbi_ecall: Remove mcause, scratch and hartid parameters

2020-03-28 13:32:20 +05:30

sbi_ecall_legacy.c

lib: sbi_tlb: Fix remote TLB HFENCE VVMA implementation

2020-05-07 08:55:38 +05:30

sbi_ecall_replace.c

lib: sbi_tlb: Fix remote TLB HFENCE VVMA implementation

2020-05-07 08:55:38 +05:30

sbi_ecall_vendor.c

lib: sbi_ecall: Remove mcause, scratch and hartid parameters

2020-03-28 13:32:20 +05:30

sbi_ecall.c

lib: Don't return any invalid error from SBI ecall

2020-06-20 10:36:13 +05:30

sbi_emulate_csr.c

lib: sbi: Improve HPM CSR read/write emulation

2020-09-01 10:28:35 +05:30

sbi_expected_trap.S

lib: Rename unprivileged trap handler

2020-05-10 09:59:16 +05:30

sbi_fifo.c

lib: Fix race conditions in tlb fifo access.

2019-08-16 08:42:55 +05:30

sbi_hart.c

lib: sbi: Detect and print MHPM counters at boot-time

2020-09-01 10:28:31 +05:30

sbi_hfence.S

lib: Fix __sbi_hfence_gvma_vmid_gpa() and __sbi_hfence_vvma_asid_va()

2020-06-15 09:24:27 +05:30

sbi_hsm.c

lib: Don't return any invalid error from SBI ecall

2020-06-20 10:36:13 +05:30

sbi_illegal_insn.c

lib: sbi: Handle the case where MTVAL has illegal instruction address

2020-08-21 19:35:31 +05:30

sbi_init.c

lib: sbi: Detect and print MHPM counters at boot-time

2020-09-01 10:28:31 +05:30

sbi_ipi.c

include: sbi_ipi: Remove scratch parameter from most functions

2020-03-28 13:32:47 +05:30

sbi_math.c

lib: Create a separate math helper function file

2020-05-10 09:59:24 +05:30

sbi_misaligned_ldst.c

lib: sbi_misaligned_ldst: Determine transformed instruction length correctly

2020-08-04 08:48:41 +05:30

sbi_platform.c

lib: sbi: Improve get_feature_str() implementation and usage

2020-05-19 09:19:34 +05:30

sbi_scratch.c

lib: sbi_scratch: Introduce sbi_scratch_last_hartid() API

2020-03-28 13:32:41 +05:30

sbi_string.c

lib: Add sbi_strncmp implementation

2020-07-29 12:03:45 +05:30

sbi_system.c

include: sbi_platform: Combine reboot and shutdown into one callback

2020-04-27 14:35:29 +05:30

sbi_timer.c

include: sbi: Use scratch pointer as parmeter in HART feature APIs

2020-05-19 09:19:42 +05:30

sbi_tlb.c

lib: Fix __sbi_hfence_gvma_vmid_gpa() and __sbi_hfence_vvma_asid_va()

2020-06-15 09:24:27 +05:30

sbi_trap.c

lib: sbi_trap: Fix hstatus.SPVP update in sbi_trap_redirect()

2020-08-17 18:17:42 +05:30

sbi_unpriv.c

lib: Optimize inline assembly for unprivilege access functions

2020-05-16 17:52:42 +05:30