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/* Copyright 2000 AG Electronics Ltd. */
/* This code is distributed without warranty under the GPL v2 (see COPYING) */
/* In the MSR, not all bits are interesting to us
13 - POW - Power management
14 - TGPR - temporary registers for page table routines
15 - ILE - Exception little endian
16 - EE - External interrupts
17 - PR - Privilege level
18 - FP - Floating Point available
19 - ME - Machine check exception enable
20 - FE0 - Floating exception mode 0
21 - SE - Single step trace mode
22 - BE - Branch trace enable
23 - FE1 - Floating exception mode 1
25 - IP - Exception prefix
26 - IR - Instruction address translation
27 - DR - Data address translation
30 - RI - Recoverable exception
31 - LE - Little endian mode
MSR_MASK is the bits we do not change.
*/
#define MSR_MASK 0xfff8008c
#define MSR_POW 0x00040000
#define MSR_TGPR 0x00020000
#define MSR_ILE 0x00010000
#define MSR_EE 0x00008000
#define MSR_PR 0x00004000
#define MSR_FP 0x00002000
#define MSR_ME 0x00001000
#define MSR_FE0 0x00000800
#define MSR_SE 0x00000400
#define MSR_BE 0x00000200
#define MSR_FE1 0x00000100
#define MSR_IP 0x00000040
#define MSR_IR 0x00000020
#define MSR_DR 0x00000010
#define MSR_RI 0x00000002
#define MSR_LE 0x00000001
#define MSR_DEFAULT (MSR_FP | MSR_IR | MSR_DR)
/* We are interested in the following hid0 bits:
6 - ECLK - Enable external test clock (603 only)
11 - DPM - Turn on dynamic power management (603 only)
15 - NHR - Not hard reset
16 - ICE - Instruction cache enable
17 - DCE - Data cache enable
18 - ILOCK - Instruction cache lock
19 - DLOCK - Data cache lock
20 - ICFI - Instruction cache invalidate
21 - DCFI - Data cache invalidate
24 - NOSER - Serial execution disable (604 only - turbo mode)
24 - SGE - Store gathering enable (7410 only)
29 - BHT - Branch history table (604 only)
I made up the tags for the 604 specific bits, as they aren't
named in the 604 book. The 603 book calls the invalidate bits
ICFI and DCI, and I have no idea why it isn't DCFI. Maybe IBM named
one, and Motorola named the other. */
#define HID0_ECLK 0x02000000
#define HID0_DPM 0x00100000
#define HID0_NHR 0x00010000
#define HID0_ICE 0x00008000
#define HID0_DCE 0x00004000
#define HID0_ILOCK 0x00002000
#define HID0_DLOCK 0x00001000
#define HID0_ICFI 0x00000800
#define HID0_DCFI 0x00000400
#define HID0_NOSER 0x00000080
#define HID0_SGE 0x00000080
#define HID0_BTIC 0x00000020
#define HID0_BHT 0x00000004
/*
* BAT defines
*/
/*
* BL field in upper BAT register
*/
#define BAT_BL_128K 0x00000000
#define BAT_BL_256K 0x00000004
#define BAT_BL_512K 0x0000000C
#define BAT_BL_1M 0x0000001C
#define BAT_BL_2M 0x0000003C
#define BAT_BL_4M 0x0000007C
#define BAT_BL_8M 0x000000FC
#define BAT_BL_16M 0x000001FC
#define BAT_BL_32M 0x000003FC
#define BAT_BL_64M 0x000007FC
#define BAT_BL_128M 0x00000FFC
#define BAT_BL_256M 0x00001FFC
/*
* Supervisor/user valid mode in upper BAT register
*/
#define BAT_VALID_SUPERVISOR 0x00000002
#define BAT_VALID_USER 0x00000001
#define BAT_INVALID 0x00000000
/*
* WIMG bit setting in lower BAT register
*/
#define BAT_WRITE_THROUGH 0x00000040
#define BAT_CACHE_INHIBITED 0x00000020
#define BAT_COHERENT 0x00000010
#define BAT_GUARDED 0x00000008
/*
* Protection bits in lower BAT register
*/
#define BAT_NO_ACCESS 0x00000000
#define BAT_READ_ONLY 0x00000001
#define BAT_READ_WRITE 0x00000002
#ifndef ASM
unsigned __getmsr(void);
void __setmsr(unsigned value);
unsigned __gethid0(void);
unsigned __gethid1(void);
void __sethid0(unsigned value);
unsigned __getpvr(void);
#endif
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