Commit Graph

6 Commits

Author SHA1 Message Date
Carlos López
cb0f4757fc lib: sbi: fwft: fix incorrect size passed to sbi_zalloc()
The fwt_hart_state struct inciludes a flexible array member, so its
allocation size will be that of the struct itself, plus that of each
of the members in the array. When calculating this size, instead of
taking the size of the struct, the size of a pointer to it was taken,
which is incorrect. Luckily, this happenned to not produce memory
corruption because the size of the non-flexible members of the struct
is the same as the size of a pointer.

Signed-off-by: Carlos López <carlos.lopezr4096@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-08-02 08:53:20 +05:30
Clément Léger
caae2f7d45 lib: sbi: fwft: return SBI_EINVAL rather than SBI_ERR_INVALID_PARAM
Error code returned by the ecall handles should use the defines from
sbi_ecall_interface.h rather than sbi_error.h.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-26 18:14:49 +05:30
Clément Léger
e8717d1264 lib: sbi: fwft: check feature value to be exactly 1 or 0
As stated by the spec and pointed out by Andrew Jones, the value passed
for MISALIGNED_EXC_DELEG and PTE_AD_HW_UPDATING should be either 0 or 1.
Add check for these values and return SBI_EINVAL if not.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-26 18:13:54 +05:30
Clément Léger
e9ee9678ba lib: sbi: fwft: add support for SBI_FWFT_PTE_AD_HW_UPDATING
Add support for SBI_FWFT_PTE_AD_HW_UPDATING based on SVADU presence.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-19 18:11:26 +05:30
Clément Léger
c97a1d5891 lib: sbi: fwft: add support for SBI_FWFT_MISALIGNED_EXC_DELEG
Add support for SBI_FWFT_MISALIGNED_EXC_DELEG withing FWFT support. This
support allows to delegate misaligned accesses traps.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-19 18:10:36 +05:30
Clément Léger
aa5a859369 lib: sbi: add support for firmware features extension
This extension allows the software running in supervisor mode to control
the behavior of various features of the SBI [1]. Implement the support
for such extension.

Link: https://lists.riscv.org/g/tech-prs/message/924 [1]
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-19 18:09:22 +05:30