[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 | #define LEON3_IO_AREA 0xfff00000 |
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| 27 | #define LEON3_CONF_AREA 0xff000 |
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| 28 | #define VENDOR_GAISLER 0x01 |
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| 29 | #define GAISLER_APBMST 0x006 |
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| 30 | #define GAISLER_APBUART 0x00C |
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| 31 | #define GAISLER_GPTIMER 0x011 |
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| 32 | |
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| 33 | .text |
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| 34 | /* ------- */ |
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| 35 | .weak cpuinit |
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| 36 | .set cpuinit,_cpuinit |
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| 37 | /* ------- */ |
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| 38 | !.global cpuinit |
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| 39 | _cpuinit: |
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| 40 | |
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| 41 | mov %o7,%g6 |
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| 42 | |
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| 43 | mov %psr, %l3 |
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| 44 | srl %l3, 24, %g5 |
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| 45 | and %g5, 0xf, %g5 |
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| 46 | subcc %g5, 3, %0 |
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| 47 | be 1f |
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| 48 | |
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| 49 | /* other versions */ |
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| 50 | |
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| 51 | ba 2f |
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| 52 | |
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| 53 | ! ####### leon3 ######### |
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| 54 | |
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| 55 | 1: set 0x01, %o0 !VENDOR_GAISLER |
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| 56 | set 0x006, %o1 !GAISLER_APBMST |
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| 57 | call ahbslv_scan |
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| 58 | nop |
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| 59 | |
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| 60 | cmp %g0,%o0 |
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| 61 | be 2f |
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| 62 | nop |
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| 63 | |
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| 64 | ld [%o0+16],%g1 |
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| 65 | set 0xfff00000,%o0 !LEON3_IO_AREA |
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| 66 | and %g1,%o0,%g1 !g1: apb base |
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| 67 | |
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| 68 | set 0xff000,%o0 !LEON3_CONF_AREA |
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| 69 | or %g1,%o0,%g2 !g2: apb conf base |
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| 70 | |
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| 71 | ! ####### uart ######### |
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| 72 | mov %g2,%o0 |
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| 73 | set 0x01 , %o1 ! VENDOR_GAISLER |
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| 74 | set 0x00C,%o2 ! GAISLER_APBUART |
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| 75 | call apbslv_scan |
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| 76 | nop |
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| 77 | cmp %g0,%o0 |
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| 78 | be 2f |
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| 79 | nop |
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| 80 | |
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| 81 | call iobar_getbase |
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| 82 | mov %g1,%o1 |
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| 83 | |
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| 84 | set console, %g5 |
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| 85 | st %o1,[%g5] !uart base address |
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| 86 | |
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| 87 | ! ####### timer ######### |
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| 88 | |
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| 89 | mov %g2,%o0 |
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| 90 | set 0x01 , %o1 !VENDOR_GAISLER |
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| 91 | set 0x011,%o2 !GAISLER_GPTIMER |
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| 92 | call apbslv_scan |
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| 93 | nop |
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| 94 | cmp %g0,%o0 |
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| 95 | be 2f |
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| 96 | nop |
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| 97 | |
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| 98 | call iobar_getbase |
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| 99 | mov %g1,%o1 |
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| 100 | |
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| 101 | add %o1,0x10,%o1 |
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| 102 | set rtc, %g5 |
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| 103 | st %o1,[%g5] |
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| 104 | |
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| 105 | ! ################ |
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| 106 | |
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| 107 | mov %g2,%o0 |
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| 108 | set 0x01 , %o1 !VENDOR_GAISLER |
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| 109 | set 0x00D,%o2 !GAISLER_IRQMP |
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| 110 | call apbslv_scan |
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| 111 | nop |
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| 112 | cmp %g0,%o0 |
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| 113 | be 2f |
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| 114 | nop |
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| 115 | |
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| 116 | call iobar_getbase |
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| 117 | mov %g1,%o1 |
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| 118 | |
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| 119 | set irqmp, %g5 |
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| 120 | st %o1,[%g5] |
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| 121 | ld [%o1+0x10], %o2 |
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| 122 | srl %o2, 16, %o2 |
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| 123 | and %o2, 15, %o2 |
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| 124 | st %o2,[%g5+4] |
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| 125 | |
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| 126 | ! ################ |
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| 127 | |
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| 128 | 2: mov %g6,%o7 |
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| 129 | retl |
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| 130 | nop |
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| 131 | |
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| 132 | ! force link of jiffies_64 |
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| 133 | .global jiffies_64 |
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| 134 | 3: set jiffies_64,%g1 |
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| 135 | |
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| 136 | |
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| 137 | .data |
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| 138 | .global irqmp |
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| 139 | |
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| 140 | irqmp: .word 0 ! IRQMP base address |
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| 141 | .word 0 ! extended irq number |
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| 142 | |
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| 143 | .text |
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