Support loading IAP in RAM

Support loading IAP in RAM instead of flash, to make more flash memory available for the main firmware

1 files changed, 16 insertions, 7 deletions

diff --git a/src/Duet3_V06/Pins_Duet3_V06.h b/src/Duet3_V06/Pins_Duet3_V06.h
index 668cfd6e..3a95749d 100644
--- a/src/Duet3_V06/Pins_Duet3_V06.h
+++ b/src/Duet3_V06/Pins_Duet3_V06.h
@@ -7,7 +7,22 @@
 const size_t NumFirmwareUpdateModules = 1;
 
 #define IAP_FIRMWARE_FILE		"Duet3Firmware_" BOARD_SHORT_NAME ".bin"
-#define IAP_UPDATE_FILE			"Duet3iap_sd_" BOARD_SHORT_NAME ".bin"
+
+#define IAP_IN_RAM				0
+
+#if IAP_IN_RAM
+# define IAP_UPDATE_FILE			"Duet3iap_sd_ram_" BOARD_SHORT_NAME ".bin"
+constexpr uint32_t IAP_IMAGE_START = 0x20450000;		// last 64kb of RAM
+#else
+# define IAP_UPDATE_FILE			"Duet3iap_sd_" BOARD_SHORT_NAME ".bin"
+
+// SAME70 Flash locations
+// These are designed to work with 1Mbyte flash processors as well as 2Mbyte
+// We can only erase complete 128kb sectors on the SAME70, so we allow 128Kb for IAP
+constexpr uint32_t IAP_IMAGE_START = 0x004E0000;
+constexpr uint32_t IAP_IMAGE_END = 0x004FFFFF;
+#endif
+
 
 // Features definition
 #define HAS_LWIP_NETWORKING		1
@@ -262,12 +277,6 @@ constexpr unsigned int NumNamedPins = ARRAY_SIZE(PinTable);
 // Function to look up a pin name pass back the corresponding index into the pin table
 bool LookupPinName(const char *pn, LogicalPin& lpin, bool& hardwareInverted);
 
-// SAME70 Flash locations
-// These are designed to work with 1Mbyte flash processors as well as 2Mbyte
-// We can only erase complete 128kb sectors on the SAME70, so we allow 128Kb for IAP
-constexpr uint32_t IAP_FLASH_START = 0x004E0000;
-constexpr uint32_t IAP_FLASH_END = 0x004FFFFF;
-
 // Duet pin numbers for the Linux interface
 constexpr Pin LinuxTfrReadyPin = PortEPin(2);
 Spi * const LinuxSpi = SPI1;