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lib: sbi_hart: Detect number of supported PMP regions

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It is not mandatory for a RISC-V systems to implement all PMP
regions so we have to check all PMPADDRx CSRs to determine excat
number of supported PMP regions.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel
2020-05-18 12:04:18 +05:30
committed by Anup Patel
parent 2966510eed
commit a38bea9341
4 changed files with 103 additions and 52 deletions
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1
lib/sbi/sbi_init.c
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@@ -68,6 +68,7 @@ static void sbi_boot_prints(struct sbi_scratch *scratch, u32 hartid)
sbi_printf("Boot HART ISA : %s\n", str);
sbi_hart_get_features_str(scratch, str, sizeof(str));
sbi_printf("BOOT HART Features : %s\n", str);
sbi_printf("BOOT HART PMP Count : %d\n", sbi_hart_pmp_count(scratch));
/* Firmware details */
sbi_printf("Firmware Base : 0x%lx\n", scratch->fw_start);