From 6f12ec6372ed6ac6682b0a59d53d465538cf3cf2 Mon Sep 17 00:00:00 2001
From: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
Date: Thu, 5 Sep 2024 07:41:32 +0200
Subject: [PATCH] Add more PLIC results to the journal

---
 JOURNAL.md | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/JOURNAL.md b/JOURNAL.md
index 76dbaea..7cd6c1e 100644
--- a/JOURNAL.md
+++ b/JOURNAL.md
@@ -4035,3 +4035,75 @@ at 0x40a01000.
 
 Clearly something is not working well in the PLIC.
 
+Let's try to dump the pending and priority registers of the PLIC with devmem,
+just to check that the plictool is not doing something wrong.
+
+    devmem 0x40801000 # Dump pending bits of sources 0-31
+    devmem 0x40801004 # Dump pending bits of sources 32-63
+    devmem 0x40a01000 # Dump priority threshold of context 1
+    devmem 0x40a00000 # Dump priority threshold of context 0
+
+Interesting output:
+
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=0 prio=1
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=0 prio=1
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=0 prio=1
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=0 prio=1
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    ~ # dd if=/dev/ttyS1 bs=1 count=1 of=/dev/null &
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=1 prio=1
+        ctx=1 thre=0 unmasked
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    src=33 pend=0 prio=0
+        ctx=1 thre=1 masked
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=1 prio=1
+        ctx=1 thre=1 masked
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    src=33 pend=0 prio=0
+        ctx=1 thre=1 masked
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=1 prio=1
+        ctx=1 thre=1 masked
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    src=33 pend=0 prio=0
+        ctx=1 thre=1 masked
+    ~ # plictool -c2
+    plictool v0.0.3 addr=0x40800000 nsrc=1024 nctx=2
+    src=1 pend=1 prio=1
+        ctx=1 thre=1 masked
+    src=2 pend=0 prio=1
+    src=3 pend=0 prio=1
+    src=4 pend=1 prio=1
+    src=33 pend=0 prio=0
+        ctx=1 thre=1 masked
+