| Aubrey Li | 51185db | 2007-03-20 18:16:24 +0800 | [diff] [blame] | 1 | #define ASSEMBLY |
| 2 | #include <asm/linkage.h> |
| 3 | #include <config.h> |
| 4 | #include <asm/blackfin.h> |
| Mike Frysinger | 66c4cf4 | 2008-02-04 19:26:55 -0500 | [diff] [blame] | 5 | #include <asm/mach-common/bits/mpu.h> |
| Aubrey Li | 51185db | 2007-03-20 18:16:24 +0800 | [diff] [blame] | 6 | |
| 7 | .text |
| 8 | .align 2 |
| 9 | ENTRY(_blackfin_icache_flush_range) |
| 10 | R2 = -32; |
| 11 | R2 = R0 & R2; |
| 12 | P0 = R2; |
| 13 | P1 = R1; |
| 14 | CSYNC; |
| 15 | 1: |
| 16 | IFLUSH[P0++]; |
| 17 | CC = P0 < P1(iu); |
| 18 | IF CC JUMP 1b(bp); |
| 19 | IFLUSH[P0]; |
| 20 | SSYNC; |
| 21 | RTS; |
| 22 | |
| 23 | ENTRY(_blackfin_dcache_flush_range) |
| 24 | R2 = -32; |
| 25 | R2 = R0 & R2; |
| 26 | P0 = R2; |
| 27 | P1 = R1; |
| 28 | CSYNC; |
| 29 | 1: |
| 30 | FLUSH[P0++]; |
| 31 | CC = P0 < P1(iu); |
| 32 | IF CC JUMP 1b(bp); |
| 33 | FLUSH[P0]; |
| 34 | SSYNC; |
| 35 | RTS; |
| 36 | |
| 37 | ENTRY(_icache_invalidate) |
| 38 | ENTRY(_invalidate_entire_icache) |
| 39 | [--SP] = (R7:5); |
| 40 | |
| 41 | P0.L = (IMEM_CONTROL & 0xFFFF); |
| 42 | P0.H = (IMEM_CONTROL >> 16); |
| 43 | R7 =[P0]; |
| 44 | |
| 45 | /* |
| 46 | * Clear the IMC bit , All valid bits in the instruction |
| 47 | * cache are set to the invalid state |
| 48 | */ |
| 49 | BITCLR(R7, IMC_P); |
| 50 | CLI R6; |
| 51 | /* SSYNC required before invalidating cache. */ |
| 52 | SSYNC; |
| 53 | .align 8; |
| 54 | [P0] = R7; |
| 55 | SSYNC; |
| 56 | STI R6; |
| 57 | |
| 58 | /* Configures the instruction cache agian */ |
| 59 | R6 = (IMC | ENICPLB); |
| 60 | R7 = R7 | R6; |
| 61 | |
| 62 | CLI R6; |
| 63 | SSYNC; |
| 64 | .align 8; |
| 65 | [P0] = R7; |
| 66 | SSYNC; |
| 67 | STI R6; |
| 68 | |
| 69 | (R7:5) =[SP++]; |
| 70 | RTS; |
| 71 | |
| 72 | /* |
| 73 | * Invalidate the Entire Data cache by |
| 74 | * clearing DMC[1:0] bits |
| 75 | */ |
| 76 | ENTRY(_invalidate_entire_dcache) |
| 77 | ENTRY(_dcache_invalidate) |
| 78 | [--SP] = (R7:6); |
| 79 | |
| 80 | P0.L = (DMEM_CONTROL & 0xFFFF); |
| 81 | P0.H = (DMEM_CONTROL >> 16); |
| 82 | R7 =[P0]; |
| 83 | |
| 84 | /* |
| 85 | * Clear the DMC[1:0] bits, All valid bits in the data |
| 86 | * cache are set to the invalid state |
| 87 | */ |
| 88 | BITCLR(R7, DMC0_P); |
| 89 | BITCLR(R7, DMC1_P); |
| 90 | CLI R6; |
| 91 | SSYNC; |
| 92 | .align 8; |
| 93 | [P0] = R7; |
| 94 | SSYNC; |
| 95 | STI R6; |
| 96 | /* Configures the data cache again */ |
| 97 | |
| 98 | R6 = (ACACHE_BCACHE | ENDCPLB | PORT_PREF0); |
| 99 | R7 = R7 | R6; |
| 100 | |
| 101 | CLI R6; |
| 102 | SSYNC; |
| 103 | .align 8; |
| 104 | [P0] = R7; |
| 105 | SSYNC; |
| 106 | STI R6; |
| 107 | |
| 108 | (R7:6) =[SP++]; |
| 109 | RTS; |
| 110 | |
| 111 | ENTRY(_blackfin_dcache_invalidate_range) |
| 112 | R2 = -32; |
| 113 | R2 = R0 & R2; |
| 114 | P0 = R2; |
| 115 | P1 = R1; |
| 116 | CSYNC; |
| 117 | 1: |
| 118 | FLUSHINV[P0++]; |
| 119 | CC = P0 < P1(iu); |
| 120 | IF CC JUMP 1b(bp); |
| 121 | |
| 122 | /* |
| 123 | * If the data crosses a cache line, then we'll be pointing to |
| 124 | * the last cache line, but won't have flushed/invalidated it yet, so do |
| 125 | * one more. |
| 126 | */ |
| 127 | FLUSHINV[P0]; |
| 128 | SSYNC; |
| 129 | RTS; |