4 * Copyright (C) 2000-2007, 2012 Imagination Technologies.
6 * This program is free software; you can redistribute it and/or modify it under
7 * the terms of the GNU General Public License version 2 as published by the
8 * Free Software Foundation.
10 * Various defines for Meta instruction set.
13 #ifndef _ASM_METAG_ISA_H_
14 #define _ASM_METAG_ISA_H_
19 /* Data cache line size as bytes and shift */
20 #define DCACHE_LINE_BYTES 64
21 #define DCACHE_LINE_S 6
23 /* Number of ways in the data cache */
26 /* Instruction cache line size as bytes and shift */
27 #define ICACHE_LINE_BYTES 64
28 #define ICACHE_LINE_S 6
30 /* Number of ways in the instruction cache */
35 * CACHEWD/CACHEWL instructions use the bottom 8 bits of the data presented to
36 * control the operation actually achieved.
38 /* Use of these two bits should be discouraged since the bits dont have
41 #define CACHEW_ICACHE_BIT 0x01
42 #define CACHEW_TLBFLUSH_BIT 0x02
44 #define CACHEW_FLUSH_L1D_L2 0x0
45 #define CACHEW_INVALIDATE_L1I 0x1
46 #define CACHEW_INVALIDATE_L1DTLB 0x2
47 #define CACHEW_INVALIDATE_L1ITLB 0x3
48 #define CACHEW_WRITEBACK_L1D_L2 0x4
49 #define CACHEW_INVALIDATE_L1D 0x8
50 #define CACHEW_INVALIDATE_L1D_L2 0xC
53 * CACHERD/CACHERL instructions use bits 3:5 of the address presented to
54 * control the operation achieved and hence the specific result.
56 #define CACHER_ADDR_BITS 0xFFFFFFC0
57 #define CACHER_OPER_BITS 0x00000030
58 #define CACHER_OPER_S 4
59 #define CACHER_OPER_LINPHY 0
60 #define CACHER_ICACHE_BIT 0x00000008
61 #define CACHER_ICACHE_S 3
64 * CACHERD/CACHERL LINPHY Oper result is one/two 32-bit words
66 * If CRLINPHY0_VAL_BIT (Bit 0) set then,
67 * Lower 32-bits corresponds to MMCU_ENTRY_* above.
68 * Upper 32-bits corresponds to CRLINPHY1_* values below (if requested).
70 * Lower 32-bits corresponds to CRLINPHY0_* values below.
71 * Upper 32-bits undefined.
73 #define CRLINPHY0_VAL_BIT 0x00000001
74 #define CRLINPHY0_FIRST_BIT 0x00000004 /* Set if VAL=0 due to first level */
76 #define CRLINPHY1_READ_BIT 0x00000001 /* Set if reads permitted */
77 #define CRLINPHY1_SINGLE_BIT 0x00000004 /* Set if TLB does not cache entry */
78 #define CRLINPHY1_PAGEMSK_BITS 0x0000FFF0 /* Set to ((2^n-1)>>12) value */
79 #define CRLINPHY1_PAGEMSK_S 4
81 #endif /* _ASM_METAG_ISA_H_ */