From f1fe00423df3fda0ace4222d9d5e3d1976db3964 Mon Sep 17 00:00:00 2001
From: cheapie <cheapiephp@gmail.com>
Date: Fri, 6 Nov 2026 13:22:41 -0600
Subject: Add Zihpm and Zicboz

---
 doc/hpm.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 doc/hpm.txt

(limited to 'doc/hpm.txt')

diff --git a/doc/hpm.txt b/doc/hpm.txt
new file mode 100644
index 0000000..07ae2e1
--- /dev/null
+++ b/doc/hpm.txt
@@ -0,0 +1,11 @@
+RVController Zihpm Counter List
+===============================
+
+The following counters are supported as part of the Zihpm extension:
+
+* hpmcounter3: Number of interrupts serviced
+* hpmcounter4: Number of non-interrupt traps handled
+* hpmcounter5: Number of digilines messages received (excluding console)
+* hpmcounter6: Number of console events received
+
+The upper word of each of these values is available in the corresponding hpmcounterXXh CSR.
-- 
cgit v1.2.3