Atmosphere/exosphere/src/mc.h

#ifndef EXOSPHERE_MC_H
#define EXOSPHERE_MC_H

#include <stdint.h>
#include "memory_map.h"

/* Exosphere driver for the Tegra X1 Memory Controller. */

static inline uintptr_t get_mc_base(void) {
    return MMIO_GET_DEVICE_ADDRESS(MMIO_DEVID_MC);
}

#define MC_BASE  (get_mc_base())

#define MAKE_MC_REG(n) MAKE_REG32(MC_BASE + n)

#define MC_SECURITY_CFG0_0 MAKE_MC_REG(0x070)
#define MC_SECURITY_CFG1_0 MAKE_MC_REG(0x074)
#define MC_SECURITY_CFG3_0 MAKE_MC_REG(0x9BC)


#define CARVEOUT_ID_MIN 1
#define CARVEOUT_ID_MAX 5

#define KERNEL_CARVEOUT_SIZE_MAX 0x1FFE0000

typedef struct {
    uint32_t allowed_clients;
    uint32_t paddr_low;
    uint32_t paddr_high;
    uint32_t size_big_pages;
    uint32_t flags_0;
    uint32_t flags_1;
    uint32_t flags_2;
    uint32_t flags_3;
    uint32_t flags_4;
    uint32_t flags_5;
    uint32_t flags_6;
    uint32_t flags_7;
    uint32_t flags_8;
    uint32_t flags_9;
    uint8_t padding[0x28];
} security_carveout_t;


volatile security_carveout_t *get_carveout_by_id(unsigned int carveout);
void configure_default_carveouts(void);
void configure_kernel_carveout(unsigned int carveout_id, uint64_t address, uint64_t size);


#endif