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54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
#ifndef MEMORY_CONTROLLER_BASE_H
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#define MEMORY_CONTROLLER_BASE_H
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#include <cinttypes>
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#include <string>
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#include <vector>
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#include "mmiodevice.h"
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enum RangeType {
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RT_ROM = 1, /* read-only memory */
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RT_RAM = 2, /* random access memory */
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RT_MMIO = 4, /* memory mapped I/O */
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RT_MIRROR = 8 /* region mirror (content of another region is acessible
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at some other address) */
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};
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typedef struct AddressMapEntry {
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uint32_t start; /* first address of the corresponding range */
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uint32_t end; /* last address of the corresponding range */
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uint32_t mirror; /* mirror address for RT_MIRROR */
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uint32_t type; /* range type */
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MMIODevice *devobj; /* pointer to device object */
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unsigned char *mem_ptr; /* direct pointer to data for memory objects */
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} AddressMapEntry;
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/** Base class for memory controllers. */
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class MemCtrlBase {
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public:
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MemCtrlBase(std::string name);
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virtual ~MemCtrlBase();
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virtual bool add_rom_region(uint32_t start_addr, uint32_t size);
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virtual bool add_ram_region(uint32_t start_addr, uint32_t size);
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virtual bool add_mem_mirror(uint32_t start_addr, uint32_t dest_addr);
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virtual bool add_mmio_region(uint32_t start_addr, uint32_t size, MMIODevice *dev_instance);
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virtual bool set_data(uint32_t reg_addr, const uint8_t *data, uint32_t size);
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AddressMapEntry *find_range(uint32_t addr);
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protected:
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bool add_mem_region(uint32_t start_addr, uint32_t size, uint32_t dest_addr, uint32_t type, uint8_t init_val);
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std::string name;
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private:
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std::vector<uint8_t *> mem_regions;
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std::vector<AddressMapEntry> address_map;
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};
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#endif /* MEMORY_CONTROLLER_BASE_H */
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