from stellaris.c:85
struct stellaris_flash_bank
{
uint32_t did0;
uint32_t did1;
uint32_t dc0;
uint32_t dc1;
uint32_t fsize;
uint32_t ssize;
const char *target_name;
uint8_t target_class;
uint32_t sramsiz;
uint32_t num_pages;
uint32_t pagesize;
uint32_t rcc;
uint32_t rcc2;
uint8_t mck_valid;
uint8_t xtal_mask;
uint32_t iosc_freq;
uint32_t mck_freq;
const char *iosc_desc;
const char *mck_desc;
};