From 19dbb857c8631a538b81026be2a8bf6c5819543a Mon Sep 17 00:00:00 2001
From: Rodrigo Arias Mallo <rodarima@gmail.com>
Date: Sat, 3 Aug 2024 14:55:35 +0200
Subject: [PATCH] Enable MEIP in OpenSBI

---
 lagarto-ox.nix            |  1 +
 opensbi-enable-meip.patch | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 opensbi-enable-meip.patch

diff --git a/lagarto-ox.nix b/lagarto-ox.nix
index 636cc8e..7863535 100644
--- a/lagarto-ox.nix
+++ b/lagarto-ox.nix
@@ -332,6 +332,7 @@
       ];
       patches = [
         ./opensbi-timer-debug.patch
+        ./opensbi-enable-meip.patch
         #./opensbi-dont-delegate.patch
         #./ox-alveo-platform-plic.patch
       ];
diff --git a/opensbi-enable-meip.patch b/opensbi-enable-meip.patch
new file mode 100644
index 0000000..9121efc
--- /dev/null
+++ b/opensbi-enable-meip.patch
@@ -0,0 +1,24 @@
+diff --git a/lib/sbi/sbi_irqchip.c b/lib/sbi/sbi_irqchip.c
+index 0ae604a..dd4592a 100644
+--- a/lib/sbi/sbi_irqchip.c
++++ b/lib/sbi/sbi_irqchip.c
+@@ -37,8 +37,7 @@ int sbi_irqchip_init(struct sbi_scratch *scratch, bool cold_boot)
+ 	if (rc)
+ 		return rc;
+ 
+-	if (ext_irqfn != default_irqfn)
+-		csr_set(CSR_MIE, MIP_MEIP);
++	csr_set(CSR_MIE, MIP_MEIP);
+ 
+ 	return 0;
+ }
+@@ -47,8 +46,7 @@ void sbi_irqchip_exit(struct sbi_scratch *scratch)
+ {
+ 	const struct sbi_platform *plat = sbi_platform_ptr(scratch);
+ 
+-	if (ext_irqfn != default_irqfn)
+-		csr_clear(CSR_MIE, MIP_MEIP);
++	csr_clear(CSR_MIE, MIP_MEIP);
+ 
+ 	sbi_platform_irqchip_exit(plat);
+ }