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Added some CPU specific functions ({get|set}_sdr1()).

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Added MMU definitions for the PowerPC.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4979 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2003-10-08 00:28:07 +00:00
parent 7e0de72b59
commit d3c6ba4606
2 changed files with 102 additions and 0 deletions
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11
headers/private/kernel/arch/ppc/arch_cpu.h
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@ -17,4 +17,15 @@
struct iframe {
};
#ifdef __cplusplus
extern "C" {
#endif
extern uint32 get_sdr1(void);
extern uint32 set_sdr1(uint32 value);
#ifdef __cplusplus
}
#endif
#endif /* _KERNEL_ARCH_PPC_CPU_H */

91
headers/private/kernel/arch/ppc/arch_mmu.h Normal file
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@ -0,0 +1,91 @@
/*
** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the OpenBeOS License.
*/
#ifndef _KERNEL_ARCH_PPC_MMU_H
#define _KERNEL_ARCH_PPC_MMU_H
#include <SupportDefs.h>
enum bat_length {
BAT_LENGTH_128kB = 0x0000,
BAT_LENGTH_256kB = 0x0001,
BAT_LENGTH_512kB = 0x0003,
BAT_LENGTH_1MB = 0x0007,
BAT_LENGTH_2MB = 0x000f,
BAT_LENGTH_4MB = 0x001f,
BAT_LENGTH_8MB = 0x003f,
BAT_LENGTH_16MB = 0x007f,
BAT_LENGTH_32MB = 0x00ff,
BAT_LENGTH_64MB = 0x01ff,
BAT_LENGTH_128MB = 0x03ff,
BAT_LENGTH_256MB = 0x07ff,
};
enum bat_protection {
BAT_READ_ONLY = 1,
BAT_READ_WRITE = 2,
};
struct block_address_translation {
// upper 32 bit
uint32 page_index : 15; // BEPI, block effective page index
uint32 _reserved0 : 3;
uint32 length : 10;
uint32 kernel_valid : 1;
uint32 user_valid : 1;
// lower 32 bit
uint32 write_through : 1; // WIMG
uint32 caching_inhibited : 1;
uint32 memory_coherent : 1;
uint32 guarded : 1;
uint32 _reserved1 : 1;
uint32 protection : 2;
void Reset()
{
*((uint32 *)this) = 0;
}
};
struct segment_descriptor {
uint32 type : 1; // 0 for page translation descriptors
uint32 kernel_protection_key : 1; // Ks, Supervisor-state protection key
uint32 user_protection_key : 1; // Kp, User-state protection key
uint32 no_execute_protection : 1;
uint32 _reserved : 4;
uint32 virtual_segment_id : 24;
};
struct page_table_entry {
// upper 32 bit
uint32 valid : 1;
uint32 virtual_segment_id : 24;
uint32 hash : 1;
uint32 abbr_page_index : 6;
// lower 32 bit
uint32 physical_page_number : 20;
uint32 _reserved0 : 3;
uint32 referenced : 1;
uint32 changed : 1;
uint32 write_through : 1; // WIMG
uint32 caching_inhibited : 1;
uint32 memory_coherent : 1;
uint32 guarded : 1;
uint32 _reserved1 : 1;
uint32 page_protection : 2;
static uint32 PrimaryHash(uint32 virtualSegmentID, uint32 virtualAddress);
static uint32 SecondaryHash(uint32 virtualSegmentID, uint32 virtualAddress);
};
struct page_table_entry_group {
struct page_table_entry entry[8];
};
extern void ppc_get_page_table(void **_pageTable, size_t *_size);
extern void ppc_set_page_table(void *pageTable, size_t size);
#endif /* _KERNEL_ARCH_PPC_MMU_H */