| Guan Xuetao | 8978bfd | 2012-03-28 18:30:03 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Co-processor register definitions for PKUnity SoC and UniCore ISA |
| 3 | * |
| 4 | * Copyright (C) 2001-2012 GUAN Xue-tao |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | #ifndef __UNICORE_HWDEF_COPRO_H__ |
| 11 | #define __UNICORE_HWDEF_COPRO_H__ |
| 12 | |
| 13 | /* |
| 14 | * Control Register bits (CP#0 CR1) |
| 15 | */ |
| 16 | #define CR_M (1 << 0) /* MMU enable */ |
| 17 | #define CR_A (1 << 1) /* Alignment abort enable */ |
| 18 | #define CR_D (1 << 2) /* Dcache enable */ |
| 19 | #define CR_I (1 << 3) /* Icache enable */ |
| 20 | #define CR_B (1 << 4) /* Dcache write mechanism: write back */ |
| 21 | #define CR_T (1 << 5) /* Burst enable */ |
| 22 | #define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ |
| 23 | |
| 24 | #ifndef __ASSEMBLY__ |
| 25 | |
| 26 | #define vectors_high() (cr_alignment & CR_V) |
| 27 | |
| 28 | extern unsigned long cr_no_alignment; /* defined in entry.S */ |
| 29 | extern unsigned long cr_alignment; /* defined in entry.S */ |
| 30 | |
| 31 | static inline unsigned int get_cr(void) |
| 32 | { |
| 33 | unsigned int val; |
| 34 | asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc"); |
| 35 | return val; |
| 36 | } |
| 37 | |
| 38 | static inline void set_cr(unsigned int val) |
| 39 | { |
| 40 | asm volatile("movc p0.c1, %0, #0" : : "r" (val) : "cc"); |
| 41 | isb(); |
| 42 | } |
| 43 | |
| 44 | extern void adjust_cr(unsigned long mask, unsigned long set); |
| 45 | |
| 46 | #endif /* __ASSEMBLY__ */ |
| 47 | |
| 48 | #endif /* __UNICORE_HWDEF_COPRO_H__ */ |