From: Anton Blanchard <anton@linux.ibm.com>
Date: Sun, 3 Jan 2021 05:46:28 +0000 (+1100)
Subject: Initialize PID register
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=740f013284444257329c11bed5ee209d6a4dcc90;p=microwatt.git

Initialize PID register

If the PID register is read before it is written we'll consume
X state data.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
---

diff --git a/mmu.vhdl b/mmu.vhdl
index 09df3ae..623c2c9 100644
--- a/mmu.vhdl
+++ b/mmu.vhdl
@@ -88,6 +88,7 @@ begin
                 r.pt0_valid <= '0';
                 r.pt3_valid <= '0';
                 r.prtbl <= (others => '0');
+                r.pid <= (others => '0');
             else
                 if rin.valid = '1' then
                     report "MMU got tlb miss for " & to_hstring(rin.addr);