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#ifndef GLOBAL_H
#define GLOBAL_H
// board type, raspi2
#define RASPI 2
// conditionally #define PERIF_BASE
#if RASPI == 4
#define PERIF_BASE 0xFE000000
#elif RASPI == 3 || RASPI == 2
#define PERIF_BASE 0x3F000000
#else // if RASPI == 1
#define PERIF_BASE 0x20000000
#endif
// GPIO_BASE is #define'd in terms of PERIF_BASE
// (as in sane kernels - like linux, not like in wiki.osdev codes...)
#define GPIO_BASE (PERIF_BASE + 0x200000)
// ARM control block
// called "base address for the ARM interrupt register" elsewhere
#define ARM_BASE (PERIF_BASE + 0xB000)
#endif // GLOBAL_H
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