How to Calculate RAM/ROM Total from memory_regions.scat?

I'm trying to determine the total RAM and ROM usage of my project, and I came across the memory_regions.scat file generated by Keil, which looks like this:

/* generated memory regions file - do not edit */
#define RAM_START 0x22000000
#define RAM_LENGTH 0xE0000
#define FLASH_START 0x02000000
#define FLASH_LENGTH 0x1F8000
#define DATA_FLASH_START 0x27000000
#define DATA_FLASH_LENGTH 0x3000
#define OPTION_SETTING_START 0x0300A100
#define OPTION_SETTING_LENGTH 0x100
#define OPTION_SETTING_S_START 0x0300A200
#define OPTION_SETTING_S_LENGTH 0x100
#define OPTION_SETTING_DATA_FLASH_S_START 0x27030080
#define OPTION_SETTING_DATA_FLASH_S_LENGTH 0x800
#define ID_CODE_START 0x00000000
#define ID_CODE_LENGTH 0x0
#define SDRAM_START 0x68000000
#define SDRAM_LENGTH 0x8000000
#define QSPI_FLASH_START 0x60000000
#define QSPI_FLASH_LENGTH 0x0
#define OSPI_DEVICE_0_START 0x80000000
#define OSPI_DEVICE_0_LENGTH 0x10000000
#define OSPI_DEVICE_1_START 0x90000000
#define OSPI_DEVICE_1_LENGTH 0x10000000
#define ITCM_START 0x00000000
#define ITCM_LENGTH 0x10000
#define DTCM_START 0x20000000
#define DTCM_LENGTH 0x10000
#define NS_OFFSET_START 0x10000000
#define NS_OFFSET_LENGTH 0x0

I was wondering if I can use this to calculate the total RAM and ROM like this:

• ROM / Flash = FLASH_LENGTH + DATA_FLASH_LENGTH
  = 0x1F8000 + 0x3000
  = 0x1FB000 (approx. 2028 KB)

• RAM = RAM_LENGTH + ITCM_LENGTH + DTCM_LENGTH
  = 0xE0000 + 0x10000 + 0x10000
  = 0x100000 (1024 KB)

Is this approach valid?
Also, it would be great if there's any documentation that explains which regions are used for ROM, RAM, etc., in the memory_regions.scat file.

Thanks in advance!