| 1 | #
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| 2 | # Copyright (c) 2013 Jakub Klama
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| 3 | # All rights reserved.
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| 4 | #
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| 5 | # Redistribution and use in source and binary forms, with or without
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| 6 | # modification, are permitted provided that the following conditions
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| 7 | # are met:
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| 8 | #
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| 9 | # - Redistributions of source code must retain the above copyright
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| 10 | # notice, this list of conditions and the following disclaimer.
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| 11 | # - Redistributions in binary form must reproduce the above copyright
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| 12 | # notice, this list of conditions and the following disclaimer in the
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| 13 | # documentation and/or other materials provided with the distribution.
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| 14 | # - The name of the author may not be used to endorse or promote products
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| 15 | # derived from this software without specific prior written permission.
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| 16 | #
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| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | #
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| 28 |
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| 29 | .text
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| 30 |
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| 31 | .global kernel_image_start
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| 32 | .global early_putchar
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| 33 | .global kernel_sp
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| 34 | .global uspace_wbuf
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| 35 |
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| 36 | kernel_image_start:
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| 37 | # Install trap handlers
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| 38 | set trap_table, %g1
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| 39 | mov %g1, %tbr
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| 40 |
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| 41 | mov %psr, %g1 ! Initialize WIM
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| 42 | add %g1, 1, %g2
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| 43 | and %g2, 0x7, %g2
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| 44 | set 1, %g3
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| 45 | sll %g3, %g2, %g3
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| 46 | mov %g3, %wim
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| 47 |
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| 48 | or %g1, 0x20, %g1
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| 49 | or %g1, 0xf00, %g1 ! PIL
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| 50 | wr %g1, %psr
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| 51 |
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| 52 | set boot_stack, %sp
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| 53 | mov %sp, %fp
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| 54 | sub %sp, 96, %sp
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| 55 |
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| 56 | mov %o1, %l1
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| 57 | set 0xdeadbeef, %o0
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| 58 | set 0xdeadbeef, %o1
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| 59 | set 0, %o2
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| 60 | call write_to_invalid
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| 61 | nop
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| 62 |
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| 63 | mov %l1, %o1
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| 64 | call arch_pre_main
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| 65 | nop
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| 66 |
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| 67 | call main_bsp
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| 68 | nop
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| 69 |
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| 70 | early_putchar:
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| 71 | set 0x80000100, %l0
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| 72 | cmp %o0, '\n'
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| 73 | bne skip
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| 74 |
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| 75 | set '\r', %l1
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| 76 | sta %l1, [%l0] 0x1c
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| 77 |
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| 78 | skip:
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| 79 | sta %o0, [%l0] 0x1c
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| 80 | retl
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| 81 | nop
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| 82 |
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| 83 | kernel_sp:
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| 84 | .space 4
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| 85 |
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| 86 | uspace_wbuf:
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| 87 | .space 4
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| 88 |
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| 89 | .align 16
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| 90 | .space 4096
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| 91 | boot_stack:
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