HAL_ChibiOS: fixed F412 ram and flash setup

libraries/AP_HAL_ChibiOS/hwdef/scripts/chibios_hwdef.py

@@ -308,7 +308,7 @@ def write_ldscript(fname):
     flash_reserve_end = get_config('FLASH_RESERVE_END_KB', default=0, type=int)
 
     # ram size
-    ram_size = get_config('RAM_SIZE_KB', default=192)
+    ram_size = get_config('RAM_SIZE_KB', default=192, type=int)
 
     flash_base = 0x08000000 + flash_reserve_start*1024
     flash_length = flash_size - (flash_reserve_start + flash_reserve_end)

libraries/AP_HAL_ChibiOS/hwdef/skyviper-f412/hwdef.dat

@@ -23,6 +23,8 @@ STM32_PWM_USE_TIM3 TRUE
 # board voltage
 STM32_VDD 330U
 
+RAM_SIZE_KB 256
+
 # flash size
 FLASH_SIZE_KB 1024
 
@@ -91,6 +93,8 @@ SPIDEV cypress    SPI1 DEVID1 RADIO_CS MODE0 2*MHZ 2*MHZ
 SPIDEV cc2500     SPI1 DEVID1 RADIO_CS MODE0 4*MHZ 4*MHZ
 SPIDEV pixartflow SPI2 DEVID2 FLOW_CS  MODE3 2*MHZ 2*MHZ
 
+# reserve 16k for bootloader and 32k for storage
+FLASH_RESERVE_START_KB 48
 
 define HAL_CHIBIOS_ARCH_F412 1
 
@@ -104,5 +108,6 @@ define HAL_GPIO_RADIO_IRQ         2
 
 define HAL_RCINPUT_WITH_AP_RADIO 1
 define STORAGE_FLASH_PAGE	 1
-define HAL_STORAGE_SIZE 8192
+define HAL_STORAGE_SIZE 16384
+