From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 7 Mar 2021 15:05:24 +0000 (+0000)
Subject: add SVSTATE read to DMI interface
X-Git-Tag: convert-csv-opcode-to-binary~93
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4d5482810c980ff927ccec62968a40a490ea86eb;p=soc.git

add SVSTATE read to DMI interface
---

diff --git a/src/soc/debug/dmi.py b/src/soc/debug/dmi.py
index 39ea799b..4d897699 100644
--- a/src/soc/debug/dmi.py
+++ b/src/soc/debug/dmi.py
@@ -25,6 +25,7 @@ class DBGCore:
     LOG_DATA     = 0b0111 # Log buffer data register
     CR           = 0b1000 # CR (read only)
     XER          = 0b1001 # XER (read only) - note this is a TEMPORARY hack
+    SVSTATE      = 0b1010 # SVSTATE register (read only for now)
 
 
 # CTRL register (direct actions, write 1 to act, read back 0)
@@ -177,6 +178,8 @@ class CoreDebug(Elaboratable):
                 comb += dmi.dout.eq(self.state.pc)
             with m.Case( DBGCore.MSR):
                 comb += dmi.dout.eq(self.state.msr)
+            with m.Case( DBGCore.SVSTATE):
+                comb += dmi.dout.eq(self.state.svstate)
             with m.Case( DBGCore.GSPR_DATA):
                 comb += dmi.dout.eq(d_gpr.data)
             with m.Case( DBGCore.LOG_ADDR):