[444] | 1 | /* |
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| 2 | * Copyright (c) 2011 Aeroflex Gaisler |
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| 3 | * |
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| 4 | * BSD license: |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 7 | * of this software and associated documentation files (the "Software"), to deal |
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| 8 | * in the Software without restriction, including without limitation the rights |
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| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 10 | * copies of the Software, and to permit persons to whom the Software is |
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| 11 | * furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included in |
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| 14 | * all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 22 | * THE SOFTWARE. |
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| 23 | */ |
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| 24 | |
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| 25 | |
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| 26 | !unsigned int ahbslv_scan(register unsigned int vendor,register unsigned int driver) { |
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| 27 | ! register unsigned int conf, mbar,i, *confp; |
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| 28 | ! register unsigned int cfg_area = (unsigned int ) (LEON3_IO_AREA | LEON3_CONF_AREA | LEON3_AHB_SLAVE_CONF_AREA); |
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| 29 | ! for (i = 0; i < LEON3_AHB_SLAVES; i++) |
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| 30 | ! { |
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| 31 | ! confp = (unsigned int*)(cfg_area + (i * LEON3_AHB_CONF_WORDS * 4)); |
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| 32 | ! conf = *confp; |
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| 33 | ! //mbar = *(unsigned int*)(i * LEON3_AHB_CONF_WORDS+ (4 * 4)); |
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| 34 | ! if ((amba_vendor(conf) == vendor) && (amba_device(conf) == driver)) { |
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| 35 | ! return (unsigned int)confp; |
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| 36 | ! } |
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| 37 | ! } |
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| 38 | ! return 0; |
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| 39 | !} |
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| 40 | |
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| 41 | |
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| 42 | .section ".text" |
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| 43 | .global ahbslv_scan |
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| 44 | .align 4 |
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| 45 | |
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| 46 | ahbslv_scan: |
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| 47 | mov %o0, %g1 |
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| 48 | mov -2048, %o5 |
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| 49 | mov 0, %o3 |
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| 50 | sll %o3, 5, %o0 |
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| 51 | .LL11: |
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| 52 | add %o5, %o0, %o4 |
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| 53 | ld [%o5+%o0], %o2 |
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| 54 | srl %o2, 24, %o0 |
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| 55 | cmp %o0, %g1 |
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| 56 | bne,a .LL10 |
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| 57 | add %o3, 1, %o3 |
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| 58 | srl %o2, 12, %o0 |
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| 59 | and %o0, 4095, %o0 |
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| 60 | cmp %o0, %o1 |
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| 61 | be .LL1 |
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| 62 | mov %o4, %o2 |
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| 63 | add %o3, 1, %o3 |
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| 64 | .LL10: |
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| 65 | cmp %o3, 7 |
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| 66 | bleu,a .LL11 |
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| 67 | sll %o3, 5, %o0 |
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| 68 | mov 0, %o2 |
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| 69 | .LL1: |
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| 70 | retl |
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| 71 | mov %o2, %o0 |
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| 72 | |
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| 73 | |
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| 74 | !unsigned int apbslv_scan(register unsigned int base,register unsigned int vendor, register unsigned int driver) { |
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| 75 | ! register unsigned int conf, mbar,i, *confp; |
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| 76 | ! for (i = 0; i < LEON3_APB_SLAVES; i++) |
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| 77 | ! { |
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| 78 | ! confp = (unsigned int*)(base + (i * LEON3_APB_CONF_WORDS * 4)); |
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| 79 | ! conf = *confp; |
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| 80 | ! //mbar = *(unsigned int*)(i * LEON3_AHB_CONF_WORDS+ (4 * 4)); |
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| 81 | ! if ((amba_vendor(conf) == vendor) && (amba_device(conf) == driver)) { |
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| 82 | ! return (unsigned int)confp; |
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| 83 | ! } |
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| 84 | ! } |
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| 85 | ! return 0; |
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| 86 | !} |
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| 87 | |
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| 88 | |
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| 89 | .section ".text" |
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| 90 | .align 4 |
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| 91 | .global apbslv_scan |
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| 92 | |
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| 93 | apbslv_scan: |
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| 94 | mov %o0, %g1 |
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| 95 | mov 0, %o4 |
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| 96 | sll %o4, 3, %o0 |
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| 97 | .LL22: |
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| 98 | add %g1, %o0, %o5 |
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| 99 | ld [%g1+%o0], %o3 |
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| 100 | srl %o3, 24, %o0 |
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| 101 | cmp %o0, %o1 |
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| 102 | bne,a .LL21 |
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| 103 | add %o4, 1, %o4 |
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| 104 | srl %o3, 12, %o0 |
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| 105 | and %o0, 4095, %o0 |
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| 106 | cmp %o0, %o2 |
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| 107 | be .LL12 |
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| 108 | mov %o5, %o3 |
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| 109 | add %o4, 1, %o4 |
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| 110 | .LL21: |
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| 111 | cmp %o4, 15 |
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| 112 | bleu,a .LL22 |
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| 113 | sll %o4, 3, %o0 |
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| 114 | mov 0, %o3 |
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| 115 | .LL12: |
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| 116 | retl |
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| 117 | mov %o3, %o0 |
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| 118 | |
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| 119 | |
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| 120 | |
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| 121 | !unsigned int getbase(register unsigned int *mbar,register unsigned int iobase) { |
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| 122 | ! register unsigned int conf = mbar[1]; |
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| 123 | ! return ((iobase & 0xfff00000) | |
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| 124 | ! ((conf & 0xfff00000)>> 12)) & (((conf & 0x0000fff0) <<4) | 0xfff00000); |
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| 125 | ! |
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| 126 | !} |
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| 127 | |
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| 128 | |
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| 129 | .section ".text" |
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| 130 | .align 4 |
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| 131 | .global iobar_getbase |
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| 132 | |
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| 133 | iobar_getbase: |
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| 134 | ld [%o0+4], %o2 |
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| 135 | sethi %hi(-1048576), %o3 |
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| 136 | and %o1, %o3, %o1 |
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| 137 | and %o2, %o3, %o0 |
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| 138 | srl %o0, 12, %o0 |
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| 139 | or %o1, %o0, %o1 |
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| 140 | sethi %hi(64512), %o0 |
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| 141 | or %o0, 1008, %o0 |
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| 142 | and %o2, %o0, %o2 |
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| 143 | sll %o2, 4, %o2 |
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| 144 | or %o2, %o3, %o2 |
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| 145 | and %o1, %o2, %o1 |
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| 146 | retl |
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| 147 | mov %o1, %o0 |
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| 148 | |
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