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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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3
platform/fpga/ariane/platform.c
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@@ -25,6 +25,8 @@
#define ARIANE_UART_REG_WIDTH 4
#define ARIANE_UART_REG_OFFSET 0
#define ARIANE_PLIC_ADDR 0xc000000
#define ARIANE_PLIC_SIZE (0x200000 + \
(ARIANE_HART_COUNT * 0x1000))
#define ARIANE_PLIC_NUM_SOURCES 3
#define ARIANE_HART_COUNT 1
#define ARIANE_CLINT_ADDR 0x2000000
@@ -36,6 +38,7 @@
static struct plic_data plic = {
.addr = ARIANE_PLIC_ADDR,
.size = ARIANE_PLIC_SIZE,
.num_src = ARIANE_PLIC_NUM_SOURCES,
};