Nigel
50bf952a49
- Added boot device info parsing to the kernel - Added a pointer in the kernel to our pre-kernel BootInfo structure - Created a layout for the FAT driver - Created a layout for the virtual filesystem - Separated IDE driver from the basic atapio driver. This will ensure we are not using one or the other - The create_harddrive shell script will now actually build a harddrive image of the kernel - The virtual filesystem initializes and creates a filesystem structure for every FAT16 partition in the master boot record
32 lines
963 B
C
32 lines
963 B
C
#pragma once
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#include <stdint.h>
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struct ExtendedBootRecord_FAT16{
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uint8_t DriveNumber;
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uint8_t Reserved;
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uint8_t Signature;
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const uint32_t VOLUME_ID_SERIAL_NUMBER;
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uint8_t volume_label [11];
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uint8_t Identifier_string [8];
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uint8_t bootCode [448];
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uint16_t partitionSignature;
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}__attribute__((packed));
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struct ExtendedBootRecord_FAT32{
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uint32_t SectorsPerFAT;
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uint16_t Flags;
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const uint16_t FAT_VERSION_NUMBER;
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uint32_t rootDirectory_clusterNumber;// Often set to 2;
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uint16_t FSInfo_SectorNumber;
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uint16_t backup_bpb_sectorNumber;
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uint8_t Reserved [12];
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uint8_t DriveNumber;
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uint8_t Reserved2;
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uint8_t Signature; // must be 0x28 or 0x29
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uint32_t VOLUME_ID_SERIAL;
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uint8_t volume_label[11];
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uint8_t SystemIdentifierString [8]; // ALWAYS "FAT32 " but spec says do not trust
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uint8_t BootCode [420]; // NICE
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uint16_t PartitionSignature; // 0xAA55
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}__attribute__((packed)); |