HiFive unleashed currently implements fewer than 56 bits of physical
address so existing PMP CSR detection is broken.
PMP address register encodes bits 55-2 of a 56-bit physical address,
Not all physical address bits may be implemented, So just check
minimum 1 bit.
Fixes:
74d1db706293 ("lib: sbi: Improve PMP CSR detection and
progamming")
Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
__check_csr_32(__csr + 32, __rdonly, __wrval, __field, __skip)
/* Detect number of PMP regions */
- __check_csr_64(CSR_PMPADDR0, 0, PMP_ADDR_MASK, pmp_count, __pmp_skip);
+ __check_csr_64(CSR_PMPADDR0, 0, 1UL, pmp_count, __pmp_skip);
__pmp_skip:
/* Detect number of MHPM counters */