enable file system on the internal flash

Author: snkYmkrct

ports/stm/boards/daisy_seed_with_sdram/mpconfigboard.mk

@@ -3,9 +3,8 @@ USB_PID = 0x5740
 USB_PRODUCT = "Daisy Seed"
 USB_MANUFACTURER = "STMicroelectronics"
 
-# INTERNAL_FLASH_FILESYSTEM = 1
-QSPI_FLASH_FILESYSTEM = 1
-# EXTERNAL_FLASH_DEVICES = N25Q128A
+# Small FS created on half of the internal flash -- other half is reserved for the H750 bootloader
+INTERNAL_FLASH_FILESYSTEM = 1
 
 MCU_SERIES = H7
 MCU_VARIANT = STM32H750xx

ports/stm/supervisor/internal_flash.c

@@ -64,9 +64,15 @@ static uint8_t _flash_cache[0x8000] __attribute__((aligned(4)));
     #endif
 #elif defined(STM32H7)
 
+#if defined(STM32H750xx)
+static const flash_layout_t flash_layout[] = {
+    { 0x08000000, 0x20000, 1 },
+};
+#else
 static const flash_layout_t flash_layout[] = {
     { 0x08000000, 0x20000, 16 },
 };
+#endif
 static uint8_t _flash_cache[0x20000] __attribute__((aligned(4)));
 
 #elif defined(STM32L4)
@@ -80,18 +86,17 @@ static uint8_t _flash_cache[0x1000] __attribute__((aligned(4)));
 #endif
 
 #define NO_CACHE        0xffffffff
-#define MAX_CACHE       0x4000
 
 
 static uint32_t _cache_flash_addr = NO_CACHE;
 
 #if defined(STM32H7)
 // get the bank of a given flash address
-
 static uint32_t get_bank(uint32_t addr) {
     #if defined(STM32H750xx) // H750 only has 1 bank
-        return FLASH_BANK_1;
+    return FLASH_BANK_1;
     #else
+
     if (READ_BIT(FLASH->OPTCR, FLASH_OPTCR_SWAP_BANK) == 0) {
         // no bank swap
         if (addr < (FLASH_BASE + FLASH_BANK_SIZE)) {
@@ -106,9 +111,9 @@ static uint32_t get_bank(uint32_t addr) {
         } else {
             return FLASH_BANK_1;
         }
-    } 
+    }
     #endif
-} 
+}
 #endif
 
 uint32_t flash_get_sector_info(uint32_t addr, uint32_t *start_addr, uint32_t *size) {
@@ -191,6 +196,9 @@ void port_internal_flash_flush(void) {
     uint32_t sector_start_addr = 0xffffffff;
     #if defined(STM32H7)
     EraseInitStruct.Banks = get_bank(_cache_flash_addr);
+    #if defined(STM32H750xx)
+    EraseInitStruct.NbSectors = 1;
+    #endif
     #endif
     #if CPY_STM32L4
     EraseInitStruct.Page = flash_get_sector_info(_cache_flash_addr, &sector_start_addr, &sector_size);

ports/stm/supervisor/internal_flash.h

@@ -81,10 +81,10 @@
 #define INTERNAL_FLASH_FILESYSTEM_START_ADDR 0x08020000
 #endif
 
-#ifdef STM32H750xx  // todo
-#define STM32_FLASH_SIZE 0x200000 // 2MB
-#define INTERNAL_FLASH_FILESYSTEM_SIZE 0x60000 // 384KiB
-#define INTERNAL_FLASH_FILESYSTEM_START_ADDR 0x08020000
+#ifdef STM32H750xx
+#define STM32_FLASH_SIZE 0x20000
+#define INTERNAL_FLASH_FILESYSTEM_SIZE 0x10000
+#define INTERNAL_FLASH_FILESYSTEM_START_ADDR 0x8010000
 #endif
 
 #ifdef STM32L4R5xx