conf/evalsoc: update clint node of dts and opensbi to reduce PMP entries for clint region.

Signed-off-by: guibing <guibing@nucleisys.com>

Author: matthewgui

conf/evalsoc/nuclei_rv32imac.dts

@@ -481,7 +481,7 @@
   clint0: clint@18031000 {
     #interrupt-cells = <1>;
     compatible = "riscv,clint0";
-    reg = <0x0 0x18031000 0x0 0xC000>;
+    reg = <0x0 0x18031000 0x0 0x10000>;
     interrupts-extended =
           <&cpu0_intc 3 &cpu0_intc 7
            &cpu1_intc 3 &cpu1_intc 7

conf/evalsoc/nuclei_rv32imafdc.dts

@@ -481,7 +481,7 @@
   clint0: clint@18031000 {
     #interrupt-cells = <1>;
     compatible = "riscv,clint0";
-    reg = <0x0 0x18031000 0x0 0xC000>;
+    reg = <0x0 0x18031000 0x0 0x10000>;
     interrupts-extended =
           <&cpu0_intc 3 &cpu0_intc 7
            &cpu1_intc 3 &cpu1_intc 7

conf/evalsoc/nuclei_rv64imac.dts

@@ -462,7 +462,7 @@
   clint0: clint@18031000 {
     #interrupt-cells = <1>;
     compatible = "riscv,clint0";
-    reg = <0x0 0x18031000 0x0 0xC000>;
+    reg = <0x0 0x18031000 0x0 0x10000>;
     interrupts-extended =
           <&cpu0_intc 3 &cpu0_intc 7
            &cpu1_intc 3 &cpu1_intc 7

conf/evalsoc/nuclei_rv64imafdc.dts

@@ -462,7 +462,7 @@
   clint0: clint@18031000 {
     #interrupt-cells = <1>;
     compatible = "riscv,clint0";
-    reg = <0x0 0x18031000 0x0 0xC000>;
+    reg = <0x0 0x18031000 0x0 0x10000>;
     interrupts-extended =
           <&cpu0_intc 3 &cpu0_intc 7
            &cpu1_intc 3 &cpu1_intc 7

conf/evalsoc/opensbi/evalsoc.c

@@ -12,6 +12,7 @@
 #include <sbi_utils/fdt/fdt_helper.h>
 #include <sbi_utils/fdt/fdt_fixup.h>
 
+extern unsigned long clint_offset_quirk;
 static const struct fdt_match nuclei_evalsoc_match[] = {
 	{ .compatible = "nuclei,evalsoc" },
 	{ .compatible = "nuclei,eval-soc" },
@@ -48,7 +49,21 @@ static int nuclei_evalsoc_final_init(bool cold_boot,
 	return 0;
 }
 
+static int nuclei_evalsoc_early_init(bool cold_boot,
+				   const struct fdt_match *match)
+{
+	/*
+	* The NUCLEI CLINT address is not aligned to 0x10000 boundary, which would require
+	* additional PMP entries to configure permissions for the CLINT region.
+	* the clint_offset_quirk var to fixup this issue.
+	*/
+	clint_offset_quirk = 0x1000;
+
+	return 0;
+}
+
 const struct platform_override nuclei_evalsoc = {
 	.match_table = nuclei_evalsoc_match,
+	.early_init = nuclei_evalsoc_early_init,
 	.final_init = nuclei_evalsoc_final_init,
 };