stm32/boards/ARDUINO_GIGA: Define additional GC blocks in SDRAM.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Author: iabdalkader

ports/stm32/boards/ARDUINO_GIGA/mpconfigboard.h

@@ -31,6 +31,7 @@ typedef unsigned int mp_uint_t; // must be pointer size
 #define MICROPY_HW_ENABLE_MMCARD (0)
 #define MICROPY_HW_ENTER_BOOTLOADER_VIA_RESET (0)
 #define MICROPY_HW_TIM_IS_RESERVED(id) (id == 1)
+#define MICROPY_GC_SPLIT_HEAP (1)
 
 // ROMFS config
 #define MICROPY_HW_ROMFS_ENABLE_EXTERNAL_QSPI (1)

ports/stm32/boards/ARDUINO_GIGA/stm32h747.ld

@@ -12,6 +12,7 @@ MEMORY
  SRAM2 (xrw) : ORIGIN = 0x30020000, LENGTH = 128K /* SRAM2 D2 */
  SRAM3 (xrw) : ORIGIN = 0x30040000, LENGTH = 32K /* SRAM3 D2 */
  SRAM4 (xrw) : ORIGIN = 0x38000000, LENGTH = 64K /* SRAM4 D3 */
+ SDRAM (xrw) : ORIGIN = 0x60000000, LENGTH = 8M /* SDRAM */
  FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K /* Total available flash */
  FLASH_BL (rx) : ORIGIN = 0x08000000, LENGTH = 128K /* Arduino bootloader */
  FLASH_FS (r) : ORIGIN = 0x08020000, LENGTH = 128K /* filesystem */
@@ -53,3 +54,27 @@ _openamp_shm_region_start = ORIGIN(SRAM4);
 _openamp_shm_region_end = ORIGIN(SRAM4) + LENGTH(SRAM4);
 
 INCLUDE common_blifs.ld
+
+SECTIONS
+{
+ /* GC blocks addresses and sizes */
+ .gc.blocks.table (READONLY) : {
+ . = ALIGN(4);
+ _gc_blocks_table_start = .;
+
+ LONG (ORIGIN(SRAM1));
+ LONG (128K);
+
+ LONG (ORIGIN(SDRAM) + 0M);
+ LONG (2M);
+
+ LONG (ORIGIN(SDRAM) + 2M);
+ LONG (2M);
+
+ LONG (ORIGIN(SDRAM) + 4M);
+ LONG (4M);
+
+ _gc_blocks_table_end = .;
+ . = ALIGN(4);
+ } > FLASH_TEXT
+}