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experimental branh to use 8k memory pages in MMU TLBs - might ease

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implementing memory protection for Coldfire in MiNT
This commit is contained in:
Markus Fröschle
2014-09-25 13:50:07 +00:00
parent 8d6154e69b
commit a1c4fdff47
3 changed files with 94 additions and 150 deletions
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12
include/mmu.h
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@@ -83,16 +83,6 @@ enum mmu_page_size
#define ACCESS_WRITE (1 << 1)
#define ACCESS_EXECUTE (1 << 2)
struct mmu_map_flags
{
unsigned cache_mode:2;
unsigned protection:1;
unsigned page_id:8;
unsigned access:3;
unsigned locked:1;
unsigned unused:17;
};
/*
* global variables from linker script
*/
@@ -100,6 +90,6 @@ extern long video_tlb;
extern long video_sbt;
extern void mmu_init(void);
extern int mmu_map_page(uint32_t virt, uint32_t phys, enum mmu_page_size sz, const struct mmu_map_flags *flags);
extern int mmu_map_page(uint32_t adr);
#endif /* _MMU_H_ */