diff --git a/os/common/startup/ARMCMx/compilers/GCC/ld/NUC123xD4xx0.ld b/os/common/startup/ARMCMx/compilers/GCC/ld/NUC123xD4xx0.ld
index 53867912..86c61bc6 100644
--- a/os/common/startup/ARMCMx/compilers/GCC/ld/NUC123xD4xx0.ld
+++ b/os/common/startup/ARMCMx/compilers/GCC/ld/NUC123xD4xx0.ld
@@ -20,15 +20,15 @@
  */
 MEMORY
 {
-    flash0 (rx) : org = 0x00000000, len = 64k
-    flash1 (rx) : org = 0x00000000, len = 0
-    flash2 (rx) : org = 0x00000000, len = 0
-    flash3 (rx) : org = 0x00000000, len = 0
-    flash4 (rx) : org = 0x00000000, len = 0
+    flash0 (rx) : org = 0x00000000, len = 0x11000       /* APROM */
+    flash1 (rx) : org = 0x00000000, len = 0             /* Data flash placeholder */
+    flash2 (rx) : org = 0x00100000, len = 0x1000        /* LDROM */
+    flash3 (rx) : org = 0x00300000, len = 4             /* Config0 */
+    flash4 (rx) : org = 0x00300004, len = 4             /* Config1 */
     flash5 (rx) : org = 0x00000000, len = 0
     flash6 (rx) : org = 0x00000000, len = 0
     flash7 (rx) : org = 0x00000000, len = 0
-    ram0   (wx) : org = 0x20000000, len = 20k
+    ram0   (wx) : org = 0x20000000, len = 0x5000
     ram1   (wx) : org = 0x00000000, len = 0
     ram2   (wx) : org = 0x00000000, len = 0
     ram3   (wx) : org = 0x00000000, len = 0
@@ -38,6 +38,22 @@ MEMORY
     ram7   (wx) : org = 0x00000000, len = 0
 }
 
+REGION_ALIAS("CONFIG0", flash3);
+REGION_ALIAS("CONFIG1", flash4);
+
+SECTIONS
+{
+    .nuc123_config0 : ALIGN(4)
+    {
+        KEEP(*(.nuc123_config0))
+    } > CONFIG0
+
+    .nuc123_config1 : ALIGN(4)
+    {
+        KEEP(*(.nuc123_config1))
+    } > CONFIG1
+}
+
 /* For each data/text section two region are defined, a virtual region
    and a load region (_LMA suffix).*/
 
diff --git a/os/hal/ports/NUMICRO/NUC123/hal_lld.c b/os/hal/ports/NUMICRO/NUC123/hal_lld.c
index 26e18d0d..32862515 100644
--- a/os/hal/ports/NUMICRO/NUC123/hal_lld.c
+++ b/os/hal/ports/NUMICRO/NUC123/hal_lld.c
@@ -50,6 +50,9 @@ uint32_t SystemCoreClock = __HSI; /* System Clock Frequency (Core Clock)*/
 uint32_t CyclesPerUs     = (__HSI / 1000000); /* Cycles per micro second */
 uint32_t PllClock        = __HSI;             /*!< PLL Clock Frequency */
 
+volatile const uint32_t config0 __attribute__((used, unused, section(".nuc123_config0"))) = NUC123_CONFIG0;
+volatile const uint32_t config1 __attribute__((used, unused, section(".nuc123_config1"))) = NUC123_CONFIG1;
+
 /*===========================================================================*/
 /* Driver local functions.                                                   */
 /*===========================================================================*/
diff --git a/os/hal/ports/NUMICRO/NUC123/hal_lld.h b/os/hal/ports/NUMICRO/NUC123/hal_lld.h
index 639c77b6..8c14bcd9 100644
--- a/os/hal/ports/NUMICRO/NUC123/hal_lld.h
+++ b/os/hal/ports/NUMICRO/NUC123/hal_lld.h
@@ -114,6 +114,23 @@
 #define NUC123_PLLSRC_HSI      (1 << CLK_PLLCON_PLL_SRC_Pos) /**< PLL source is HSI.      */
 /** @} */
 
+/**
+ * @name    User config bit definitions
+ * @{
+ */
+#define NUC123_CONFIG0_DFEN_Pos 0
+#define NUC123_CONFIG0_DFEN_Msk (1 << NUC123_CONFIG0_DFEN_Pos)
+
+#define NUC123_CONFIG0_LOCK_Pos 1
+#define NUC123_CONFIG0_LOCK_Msk (1 << NUC123_CONFIG0_LOCK_Pos)
+
+#define NUC123_CONFIG0_DFVSEN_Pos 2
+#define NUC123_CONFIG0_DFVSEN_Msk (1 << NUC123_CONFIG0_DFVSEN_Pos)
+
+#define NUC123_CONFIG0_CGPFMFP_Pos 27
+#define NUC123_CONFIG0_CGPFMFP_Msk (1 << NUC123_CONFIG0_CGPFMFP_Pos)
+/** @} */
+
 /*===========================================================================*/
 /* Driver pre-compile time settings.                                         */
 /*===========================================================================*/
@@ -159,11 +176,26 @@
 #endif
 
 /**
- * @brief   Clock source for the PLL.
+ * @brief   Core clock speed.
  */
 #if !defined(NUC123_HCLK) || defined(__DOXYGEN__)
 #define NUC123_HCLK 72000000UL
 #endif
+
+/**
+ * @brief   Enables or disables data flash
+ */
+#if !defined(NUC123_DATAFLASH_ENABLED) || defined(__DOXYGEN__)
+#define NUC123_DATAFLASH_ENABLED FALSE
+#endif
+
+/**
+ * @brief   Sets the data flash size. This is ignored if data flash is disabled.
+ */
+#if !defined(NUC123_DATAFLASH_SIZE) || defined(__DOXYGEN__)
+#define NUC123_DATAFLASH_SIZE 4096
+#endif
+
 /** @} */
 
 /*===========================================================================*/
@@ -187,10 +219,39 @@
 #elif (NUC123_HSECLK < NUC123_HSECLK_MIN) || (NUC123_HSECLK > NUC123_HSECLK_MAX)
 #error "NUC123_HSECLK outside acceptable range (NUC123_HSECLK_MIN...NUC123_HSECLK_MAX)"
 #endif
+#define NUC123_CONFIG0_HSE_PINS 0
+#else
+#define NUC123_CONFIG0_HSE_PINS NUC123_CONFIG0_CGPFMFP_Msk
 #endif
 
 #define NUC123_PLLCLK (NUC123_HCLK * 2)
 
+/*
+* Persistant configuration settings.
+*/
+#if NUC123_DATAFLASH_ENABLE
+
+#if (NUC123_DATAFLASH_SIZE == 4096)
+/* DFVSEN = 1, nothing else matters */
+#define NUC123_CONFIG0_DATAFLASH 0UL
+/* NUC123_DFBADDR doesn't actually control anything here, but convenient for flash drivers
+which need the starting address */
+#define NUC123_DFBADDR 0x1F000UL
+#else
+/* DFVSEN = 0, DFEN = 0 */
+#define NUC123_CONFIG0_DATAFLASH (NUC123_CONFIG0_DFVSEN_Msk | NUC123_CONFIG0_DFEN_Msk)
+#define NUC123_DFBADDR ((0x11000UL - NUC123_DATAFLASH_SIZE) & ~(0xFFUL))
+#endif
+#else
+/* DFVSEN = 0, DFEN = 1 */
+#define NUC123_CONFIG0_DATAFLASH NUC123_CONFIG0_DFVSEN_Msk
+#define NUC123_DFBADDR 0xFFFFFF00UL
+#endif
+
+#define NUC123_CONFIG0                                                      \
+  0xFFFFFFFFUL & (~NUC123_CONFIG0_DATAFLASH) & (~NUC123_CONFIG0_HSE_PINS)
+#define NUC123_CONFIG1 NUC123_DFBADDR
+
 /*===========================================================================*/
 /* Driver data structures and types.                                         */
 /*===========================================================================*/
@@ -198,6 +259,7 @@
 /*===========================================================================*/
 /* Driver macros.                                                            */
 /*===========================================================================*/
+
 /* Alias for compatibility */
 #define SystemUnlockReg() UNLOCKREG()
 
diff --git a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/Blinky/Makefile b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/Blinky/Makefile
index 1b9b70fb..f61599c6 100644
--- a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/Blinky/Makefile
+++ b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/Blinky/Makefile
@@ -196,4 +196,4 @@ connect:
 	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg
 
 flash: $(BUILDDIR)/$(PROJECT).elf
-	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< verify reset exit"
+	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< reset exit"
diff --git a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/PWM/Makefile b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/PWM/Makefile
index 1854bc2d..275dc748 100644
--- a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/PWM/Makefile
+++ b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/PWM/Makefile
@@ -196,7 +196,7 @@ connect:
 	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg
 
 flash: $(BUILDDIR)/$(PROJECT).elf
-	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< verify reset exit"
+	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< reset exit"
 
 #
 # Custom rules
diff --git a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/SERIAL/Makefile b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/SERIAL/Makefile
index 81242908..95ea9145 100644
--- a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/SERIAL/Makefile
+++ b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/SERIAL/Makefile
@@ -193,4 +193,4 @@ connect:
 	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg
 
 flash: $(BUILDDIR)/$(PROJECT).elf
-	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< verify reset exit"
+	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< reset exit"
diff --git a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/USB_HID/Makefile b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/USB_HID/Makefile
index be859ed7..79010635 100644
--- a/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/USB_HID/Makefile
+++ b/testhal/NUMICRO/NUC123/NUTINY-SDK-NUC123-V2.0/USB_HID/Makefile
@@ -197,7 +197,7 @@ connect:
 	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg
 
 flash: $(BUILDDIR)/$(PROJECT).elf
-	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< verify reset exit"
+	openocd -f ../scripts/interface/nulink.cfg -f ../scripts/target/numicroM0.cfg -c "program $< reset exit"
 
 
 #