diff options
| author | Ben Zong-You Xie <[email protected]> | 2024-05-31 13:21:08 +0800 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2024-06-18 16:19:47 +0530 |
| commit | 52dcf351cddf12081acc921c135df265f9d2f243 (patch) | |
| tree | bf74c6a2359b0eed52298859fd61286592ba1212 | |
| parent | f09f16430ae7b3543616a38df4411fea8f026759 (diff) | |
platform: generic: andes: Add support for RV32 to set up PMA
Like PMP, the behaviors to configure PMA will be different from
RV64 and RV32. RV64 uses two Andes custom CSRs, pmacfg0 and pmacfg2,
but RV32 uses four Andes custom CSRs, pmacfg0 ~ pmacfg3. This patch
adds support to PMA for RV32.
Signed-off-by: Ben Zong-You Xie <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
| -rw-r--r-- | platform/generic/andes/andes_pma.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/platform/generic/andes/andes_pma.c b/platform/generic/andes/andes_pma.c index 321074ac..9c37720b 100644 --- a/platform/generic/andes/andes_pma.c +++ b/platform/generic/andes/andes_pma.c @@ -109,10 +109,17 @@ static unsigned long andes_pma_setup(const struct andes_pma_region *pma_region, !(pma_region->flags & ANDES_PMACFG_ETYP_NAPOT)) return SBI_EINVAL; +#if __riscv_xlen == 64 pma_cfg_addr = CSR_PMACFG0 + ((entry_id / 8) ? 2 : 0); pmacfg_val = andes_pma_read_num(pma_cfg_addr); pmaxcfg = (char *)&pmacfg_val + (entry_id % 8); - *pmaxcfg = 0; +#elif __riscv_xlen == 32 + pma_cfg_addr = CSR_PMACFG0 + (entry_id / 4); + pmacfg_val = andes_pma_read_num(pma_cfg_addr); + pmaxcfg = (char *)&pmacfg_val + (entry_id % 4); +#else +#error "Unexpected __riscv_xlen" +#endif *pmaxcfg = pma_region->flags; andes_pma_write_num(pma_cfg_addr, pmacfg_val); |