| Aubrey Li | 10ebdd9 | 2007-03-19 01:24:52 +0800 | [diff] [blame^] | 1 | #define ASSEMBLY |
| 2 | #include <asm/linkage.h> |
| 3 | #include <config.h> |
| 4 | #include <asm/blackfin.h> |
| 5 | |
| 6 | .text |
| 7 | .align 2 |
| 8 | ENTRY(_blackfin_icache_flush_range) |
| 9 | R2 = -32; |
| 10 | R2 = R0 & R2; |
| 11 | P0 = R2; |
| 12 | P1 = R1; |
| 13 | CSYNC; |
| 14 | 1: |
| 15 | IFLUSH[P0++]; |
| 16 | CC = P0 < P1(iu); |
| 17 | IF CC JUMP 1b(bp); |
| 18 | IFLUSH[P0]; |
| 19 | SSYNC; |
| 20 | RTS; |
| 21 | |
| 22 | ENTRY(_blackfin_dcache_flush_range) |
| 23 | R2 = -32; |
| 24 | R2 = R0 & R2; |
| 25 | P0 = R2; |
| 26 | P1 = R1; |
| 27 | CSYNC; |
| 28 | 1: |
| 29 | FLUSH[P0++]; |
| 30 | CC = P0 < P1(iu); |
| 31 | IF CC JUMP 1b(bp); |
| 32 | FLUSH[P0]; |
| 33 | SSYNC; |
| 34 | RTS; |
| 35 | |
| 36 | ENTRY(_icache_invalidate) |
| 37 | ENTRY(_invalidate_entire_icache) |
| 38 | [--SP] = (R7:5); |
| 39 | |
| 40 | P0.L = (IMEM_CONTROL & 0xFFFF); |
| 41 | P0.H = (IMEM_CONTROL >> 16); |
| 42 | R7 =[P0]; |
| 43 | |
| 44 | /* |
| 45 | * Clear the IMC bit , All valid bits in the instruction |
| 46 | * cache are set to the invalid state |
| 47 | */ |
| 48 | BITCLR(R7, IMC_P); |
| 49 | CLI R6; |
| 50 | /* SSYNC required before invalidating cache. */ |
| 51 | SSYNC; |
| 52 | .align 8; |
| 53 | [P0] = R7; |
| 54 | SSYNC; |
| 55 | STI R6; |
| 56 | |
| 57 | /* Configures the instruction cache agian */ |
| 58 | R6 = (IMC | ENICPLB); |
| 59 | R7 = R7 | R6; |
| 60 | |
| 61 | CLI R6; |
| 62 | SSYNC; |
| 63 | .align 8; |
| 64 | [P0] = R7; |
| 65 | SSYNC; |
| 66 | STI R6; |
| 67 | |
| 68 | (R7:5) =[SP++]; |
| 69 | RTS; |
| 70 | |
| 71 | /* |
| 72 | * Invalidate the Entire Data cache by |
| 73 | * clearing DMC[1:0] bits |
| 74 | */ |
| 75 | ENTRY(_invalidate_entire_dcache) |
| 76 | ENTRY(_dcache_invalidate) |
| 77 | [--SP] = (R7:6); |
| 78 | |
| 79 | P0.L = (DMEM_CONTROL & 0xFFFF); |
| 80 | P0.H = (DMEM_CONTROL >> 16); |
| 81 | R7 =[P0]; |
| 82 | |
| 83 | /* |
| 84 | * Clear the DMC[1:0] bits, All valid bits in the data |
| 85 | * cache are set to the invalid state |
| 86 | */ |
| 87 | BITCLR(R7, DMC0_P); |
| 88 | BITCLR(R7, DMC1_P); |
| 89 | CLI R6; |
| 90 | SSYNC; |
| 91 | .align 8; |
| 92 | [P0] = R7; |
| 93 | SSYNC; |
| 94 | STI R6; |
| 95 | /* Configures the data cache again */ |
| 96 | |
| 97 | R6 = (ACACHE_BCACHE | ENDCPLB | PORT_PREF0); |
| 98 | R7 = R7 | R6; |
| 99 | |
| 100 | CLI R6; |
| 101 | SSYNC; |
| 102 | .align 8; |
| 103 | [P0] = R7; |
| 104 | SSYNC; |
| 105 | STI R6; |
| 106 | |
| 107 | (R7:6) =[SP++]; |
| 108 | RTS; |
| 109 | |
| 110 | ENTRY(_blackfin_dcache_invalidate_range) |
| 111 | R2 = -32; |
| 112 | R2 = R0 & R2; |
| 113 | P0 = R2; |
| 114 | P1 = R1; |
| 115 | CSYNC; |
| 116 | 1: |
| 117 | FLUSHINV[P0++]; |
| 118 | CC = P0 < P1(iu); |
| 119 | IF CC JUMP 1b(bp); |
| 120 | |
| 121 | /* |
| 122 | * If the data crosses a cache line, then we'll be pointing to |
| 123 | * the last cache line, but won't have flushed/invalidated it yet, so do |
| 124 | * one more. |
| 125 | */ |
| 126 | FLUSHINV[P0]; |
| 127 | SSYNC; |
| 128 | RTS; |