| 39,50 → 39,44 |
|---|
| #include "types.h" |
| |
| |
| #define FRAME_WIDTH 12 /* 4KB frames */ |
| #define FRAME_SIZE (1 << FRAME_WIDTH) |
| #define FRAME_WIDTH 12 /* 4KB frames */ |
| #define FRAME_SIZE (1 << FRAME_WIDTH) |
| |
| #define PAGE_WIDTH FRAME_WIDTH |
| #define PAGE_SIZE FRAME_SIZE |
| #define PAGE_WIDTH FRAME_WIDTH |
| #define PAGE_SIZE FRAME_SIZE |
| |
| #ifndef __ASM__ |
| # define KA2PA(x) (((uintptr_t) (x)) - 0x80000000) |
| # define PA2KA(x) (((uintptr_t) (x)) + 0x80000000) |
| # define KA2PA(x) (((uintptr_t) (x)) - 0x80000000) |
| # define PA2KA(x) (((uintptr_t) (x)) + 0x80000000) |
| #else |
| # define KA2PA(x) ((x) - 0x80000000) |
| # define PA2KA(x) ((x) + 0x80000000) |
| # define KA2PA(x) ((x) - 0x80000000) |
| # define PA2KA(x) ((x) + 0x80000000) |
| #endif |
| |
| #define SET_PTL0_ADDRESS_ARCH(ptl0) ( set_ptl0_addr((pte_level0_section *)(ptl0)) ) |
| #define PTL0_ENTRIES_ARCH (2<<12) /* 4096 */ |
| #define SET_PTL0_ADDRESS_ARCH(ptl0) ( set_ptl0_addr((pte_level0_section *)(ptl0)) ) |
| |
| /** Frames per 1MB section */ |
| #define FRAMES_PER_SECTION ( ( 1 << 20 ) / FRAME_SIZE ) |
| |
| /// User no acess, kernel read/write |
| #define pte_ap_user_no_kernel_rw 1 |
| /** Converts adress to frame */ |
| #define ADDR2PFN( addr ) ( ((uintptr_t)(addr))>>FRAME_WIDTH ) |
| |
| /// Frames per 1MB section |
| #define FRAMES_PER_SECTION ( ( 1 << 20 ) / FRAME_SIZE ) |
| |
| /// Converts Address to frame |
| #define ADDR2PFN( addr ) ( ((uintptr_t)(addr))>>FRAME_WIDTH ) |
| /** Value of descriptor_type in page table entry that signals |
| * that this entry describe section |
| */ |
| #define pte_descriptor_section 2 |
| #define PTE_DESCRIPTOR_SECTION 2 |
| |
| /** Page Table Entry. */ |
| typedef struct { |
| /**PageTables are so different that we have different types |
| * for level 0 and level1 page table entries |
| */ |
| unsigned dummy : 32; |
| } pte_t; |
| /** Rights: user-no acess, kernel-read/write */ |
| #define PTE_AP_USER_NO_KERNEL_RW 1 |
| |
| |
| /** Page table level 0 entry - section format */ |
| typedef struct { |
| unsigned descriptor_type : 2; // should be 2 |
| unsigned bufferable : 1; |
| unsigned cacheable : 1; |
| unsigned machine_depend : 1; // Alf: ???? v Architecture previev neni vyznam definovan |
| unsigned machine_depend : 1; |
| unsigned domain : 4; |
| unsigned should_be_zero_1 : 1; |
| unsigned access_permission : 2; |
| 102,19 → 96,10 |
|---|
| |
| } |
| |
| /// Page table that holds 1:1 mapping for kernel starting |
| extern pte_level0_section page_table[4096]; |
| /** Page table that holds 1:1 mapping for kernel starting */ |
| extern pte_level0_section page_table[PTL0_ENTRIES_ARCH]; |
| |
| |
| /** Set page table entry to point no frame, be read/write by kernel, |
| * no access by user, become to domain 0, no cache or buffer |
| * \param pte page table entry to set |
| * \param frame frame number of first frame 1MB section |
| * Note: If frame not aligned it's used first lower 1MB aligned frame |
| */ |
| void init_pte_level0_section_entry( pte_level0_section* pte, unsigned frame); |
| |
| /// Sets memory mapping for kernel |
| /** Sets memory mapping for kernel */ |
| void mm_kernel_mapping(void); |
| |
| #endif |