| Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2013 Google Inc. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| Julius Werner | 25a282d | 2014-01-13 13:24:30 -0800 | [diff] [blame] | 30 | #include <arch/asm.h> |
| 31 | |
| Julius Werner | 25a282d | 2014-01-13 13:24:30 -0800 | [diff] [blame] | 32 | .arm |
| 33 | ENTRY(maincpu_setup) |
| Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 34 | /* |
| 35 | * Set the cpu to System mode with IRQ and FIQ disabled. Prefetch/Data |
| 36 | * aborts may happen early and crash before the abort handlers are |
| 37 | * installed, but at least the problem will show up near the code that |
| 38 | * causes it. |
| 39 | */ |
| 40 | msr cpsr_cxf, #0xdf |
| 41 | |
| Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 42 | ldr sp, maincpu_stack_pointer |
| Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 43 | eor lr, lr |
| Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 44 | ldr r0, maincpu_entry_point |
| Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 45 | bx r0 |
| Julius Werner | 25a282d | 2014-01-13 13:24:30 -0800 | [diff] [blame] | 46 | ENDPROC(maincpu_setup) |
| Julius Werner | 7c6e489 | 2014-01-24 16:23:08 -0800 | [diff] [blame] | 47 | |
| 48 | .align 2 |
| 49 | |
| 50 | .global maincpu_stack_pointer |
| 51 | maincpu_stack_pointer: |
| 52 | .word 0 |
| 53 | |
| 54 | .global maincpu_entry_point |
| 55 | maincpu_entry_point: |
| 56 | .word 0 |