From 8d1018796daae14a8878ce43f7066cfda748d2d1 Mon Sep 17 00:00:00 2001
From: Patrick Urban <patrick.urban@web.de>
Date: Mon, 20 Oct 2025 17:25:26 +0200
Subject: [PATCH] gmpack: reset config latches before bootaddr jump

---
 docs/source/bitstream/commands.rst | 2 +-
 libgm/src/Bitstream.cpp            | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/source/bitstream/commands.rst b/docs/source/bitstream/commands.rst
index 72faba4..c2c66fc 100644
--- a/docs/source/bitstream/commands.rst
+++ b/docs/source/bitstream/commands.rst
@@ -91,7 +91,7 @@ each bit of one byte payload is used to set one of 4 columns.
 
 CMD_CFGRST
 -----------
-Resets all configuration latches to value of a byte from payload.
+Resets all configuration latches to value of a byte from payload, except active SPI controller and configuration PLL.
 
 CMD_ACLCU
 ----------
diff --git a/libgm/src/Bitstream.cpp b/libgm/src/Bitstream.cpp
index da3d398..5c96356 100644
--- a/libgm/src/Bitstream.cpp
+++ b/libgm/src/Bitstream.cpp
@@ -1100,6 +1100,7 @@ Bitstream Bitstream::serialise_chip(const Chip &chip, const std::map<std::string
         if (d == 0) {
             if (options.count("bootaddr") && !options.count("background")) {
                 uint32_t bootaddr = std::strtoul(options.at("bootaddr").c_str(), nullptr, 0);
+                wr.write_cmd_cfgrst(0x00);
                 wr.write_cmd_jump(bootaddr);
             }
             if (options.count("background") && !options.count("bootaddr")) {