pmp_read_cfg() returns 8-bit value, which is combined together to form a single pmpcfg CSR.
The default promotion rules will result in an integer here ("i*8" is integer, which
flows through) resulting in a 32-bit signed value on most hosts.
That's bogus on RV64I, with the high bits of the CSR being wrong.
Signed-off-by: Dayeol Lee <dayeol@berkeley.edu>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Implements the physical memory protection extension as specified in
Privileged ISA Version 1.10.
PMP (Physical Memory Protection) is as-of-yet unused and needs testing.
The SiFive verification team have PMP test cases that will be run.
Nothing currently depends on PMP support. It would be preferable to keep
the code in-tree for folk that are interested in RISC-V PMP support.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daire McNamara <daire.mcnamara@emdalo.com>
Signed-off-by: Ivan Griffin <ivan.griffin@emdalo.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
