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

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 <[email protected]>

6 files changed, 14 insertions, 0 deletions

diff --git a/platform/fpga/ariane/platform.c b/platform/fpga/ariane/platform.c
index 975528f1..8be5e6ca 100644
--- a/platform/fpga/ariane/platform.c
+++ b/platform/fpga/ariane/platform.c
@@ -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,
 };
 
diff --git a/platform/fpga/openpiton/platform.c b/platform/fpga/openpiton/platform.c
index e59dc992..2317a899 100644
--- a/platform/fpga/openpiton/platform.c
+++ b/platform/fpga/openpiton/platform.c
@@ -24,6 +24,8 @@
 #define OPENPITON_DEFAULT_UART_REG_WIDTH	1
 #define OPENPITON_DEFAULT_UART_REG_OFFSET	0
 #define OPENPITON_DEFAULT_PLIC_ADDR		0xfff1100000
+#define OPENPITON_DEFAULT_PLIC_SIZE		(0x200000 + \
+				(OPENPITON_DEFAULT_HART_COUNT * 0x1000))
 #define OPENPITON_DEFAULT_PLIC_NUM_SOURCES	2
 #define OPENPITON_DEFAULT_HART_COUNT		3
 #define OPENPITON_DEFAULT_CLINT_ADDR		0xfff1020000
@@ -40,6 +42,7 @@ static struct platform_uart_data uart = {
 };
 static struct plic_data plic = {
 	.addr = OPENPITON_DEFAULT_PLIC_ADDR,
+	.size = OPENPITON_DEFAULT_PLIC_SIZE,
 	.num_src = OPENPITON_DEFAULT_PLIC_NUM_SOURCES,
 };
 
diff --git a/platform/kendryte/k210/platform.c b/platform/kendryte/k210/platform.c
index 637a217f..27b23f73 100644
--- a/platform/kendryte/k210/platform.c
+++ b/platform/kendryte/k210/platform.c
@@ -32,6 +32,7 @@ unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1,
 
 static struct plic_data plic = {
 	.addr = K210_PLIC_BASE_ADDR,
+	.size = K210_PLIC_BASE_SIZE,
 	.num_src = K210_PLIC_NUM_SOURCES,
 };
 
diff --git a/platform/kendryte/k210/platform.h b/platform/kendryte/k210/platform.h
index be52aa30..9417403d 100644
--- a/platform/kendryte/k210/platform.h
+++ b/platform/kendryte/k210/platform.h
@@ -27,6 +27,7 @@
 #define K210_ACLINT_MTIMER_ADDR \
 		(K210_CLINT_BASE_ADDR + CLINT_MTIMER_OFFSET)
 #define K210_PLIC_BASE_ADDR	0x0C000000ULL
+#define K210_PLIC_BASE_SIZE	(0x200000ULL + (K210_HART_COUNT * 0x1000))
 
 /* Registers */
 #define K210_PLL0		0x08
diff --git a/platform/nuclei/ux600/platform.c b/platform/nuclei/ux600/platform.c
index 6fd6cd70..f688b50a 100644
--- a/platform/nuclei/ux600/platform.c
+++ b/platform/nuclei/ux600/platform.c
@@ -39,6 +39,8 @@
 					 CLINT_MTIMER_OFFSET)
 
 #define UX600_PLIC_ADDR			0x8000000
+#define UX600_PLIC_SIZE			(0x200000 + \
+					 (UX600_HART_COUNT * 0x1000))
 #define UX600_PLIC_NUM_SOURCES		0x35
 #define UX600_PLIC_NUM_PRIORITIES	7
 
@@ -63,6 +65,7 @@ static u32 ux600_clk_freq = 8000000;
 
 static struct plic_data plic = {
 	.addr = UX600_PLIC_ADDR,
+	.size = UX600_PLIC_SIZE,
 	.num_src = UX600_PLIC_NUM_SOURCES,
 };
 
diff --git a/platform/template/platform.c b/platform/template/platform.c
index 86381ca2..4b3f2acf 100644
--- a/platform/template/platform.c
+++ b/platform/template/platform.c
@@ -19,6 +19,8 @@
 #include <sbi_utils/timer/aclint_mtimer.h>
 
 #define PLATFORM_PLIC_ADDR		0xc000000
+#define PLATFORM_PLIC_SIZE		(0x200000 + \
+					 (PLATFORM_HART_COUNT * 0x1000))
 #define PLATFORM_PLIC_NUM_SOURCES	128
 #define PLATFORM_HART_COUNT		4
 #define PLATFORM_CLINT_ADDR		0x2000000
@@ -33,6 +35,7 @@
 
 static struct plic_data plic = {
 	.addr = PLATFORM_PLIC_ADDR,
+	.size = PLATFORM_PLIC_SIZE,
 	.num_src = PLATFORM_PLIC_NUM_SOURCES,
 };