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lib: utils/irqchip: Add shared MMIO region for PLIC in root domain

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On platforms with Smepmp, the MMIO regions accessed by M-mode need
to be explicitly marked with M-mode only read/write or shared (both
(M-mode and S-mode) read/write permission.

If the above is not done then runtime PLIC access from M-mode on
platforms with Smepmp will result in access fault when further
results in CPU hotplug not working.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
This commit is contained in:
Anup Patel
2023-12-11 14:07:56 +05:30
committed by Anup Patel
parent 80169b25f8
commit cdebae2cc9
9 changed files with 21 additions and 1 deletions
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1
lib/utils/fdt/fdt_helper.c
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@@ -880,6 +880,7 @@ int fdt_parse_plic_node(void *fdt, int nodeoffset, struct plic_data *plic)
if (rc < 0 || !reg_addr || !reg_size)
return SBI_ENODEV;
plic->addr = reg_addr;
plic->size = reg_size;
val = fdt_getprop(fdt, nodeoffset, "riscv,ndev", &len);
if (len > 0)