start impl auto switch feature

bsp_q7s/memory/scratchApi.h

@@ -76,7 +76,6 @@ ReturnValue_t readToFile(std::string name, std::ifstream& file, std::string& fil
   int result = std::system(oss.str().c_str());
   if (result != 0) {
     if (WEXITSTATUS(result) == 1) {
-      sif::warning << "scratch::readToFile: Key " << name << " does not exist" << std::endl;
       // Could not find value
       std::remove(filename.c_str());
       return KEY_NOT_FOUND;

bsp_q7s/obsw.cpp

@@ -10,6 +10,7 @@
 
 #include "OBSWConfig.h"
 #include "bsp_q7s/core/WatchdogHandler.h"
+#include "memory/scratchApi.h"
 #include "commonConfig.h"
 #include "fsfw/tasks/TaskFactory.h"
 #include "fsfw/version.h"
@@ -18,6 +19,7 @@
 #include "mission/system/systemTree.h"
 #include "q7sConfig.h"
 #include "scheduling.h"
+#include <libxiphos.h>
 #include "watchdog/definitions.h"
 
 static constexpr int OBSW_ALREADY_RUNNING = -2;
@@ -50,6 +52,8 @@ int obsw::obsw(int argc, char* argv[]) {
   }
 #endif
 
+  autoSwitchHandling();
+
   // Delay the boot if applicable.
   bootDelayHandling();
 
@@ -82,6 +86,27 @@ int obsw::obsw(int argc, char* argv[]) {
   return 0;
 }
 
+void obsw::autoSwitchHandling() {
+  std::string autoSwitchTarget;
+  auto switchToTarget = [](xsc_libnor_chip_t chip, xsc_libnor_copy_t copy) {
+      scratch::clearValue("ASWI");
+      xsc_boot_copy(chip, copy);
+  };
+  if (scratch::readString("ASWI", autoSwitchTarget) == returnvalue::OK) {
+    if (autoSwitchTarget == "00") {
+      switchToTarget(XSC_LIBNOR_CHIP_0, XSC_LIBNOR_COPY_NOMINAL);
+    } else if (autoSwitchTarget == "01") {
+      switchToTarget(XSC_LIBNOR_CHIP_0, XSC_LIBNOR_COPY_GOLD);
+    } else if (autoSwitchTarget == "10") {
+      switchToTarget(XSC_LIBNOR_CHIP_1, XSC_LIBNOR_COPY_NOMINAL);
+    } else if(autoSwitchTarget == "11") {
+      switchToTarget(XSC_LIBNOR_CHIP_1, XSC_LIBNOR_COPY_GOLD);
+    } else {
+      sif::warning << "Invalid Auto Switch Image (ASWI) value detected: " << autoSwitchTarget << std::endl;
+    }
+  }
+}
+
 void obsw::bootDelayHandling() {
   const char* homedir = nullptr;
   homedir = getenv("HOME");

bsp_q7s/obsw.h

@@ -5,6 +5,12 @@ namespace obsw {
 
 int obsw(int argc, char* argv[]);
 
+/**
+ * This is a safety mechanism where the ProASIC scratch buffer can be used to trigger an
+ * auto-boot to another image. The auto-boot is currently implemented as a one-shot mechanism:
+ * The key-value pair which triggers the auto-boot will be removed from the scratch buffer.
+ */
+void autoSwitchHandling();
 void bootDelayHandling();
 void commandEiveSystemToSafe();
 void commandComSubsystemRxOnly();