diff options
Diffstat (limited to 'sys/arm/mv/armadaxp/mptramp.S')
| -rw-r--r-- | sys/arm/mv/armadaxp/mptramp.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sys/arm/mv/armadaxp/mptramp.S b/sys/arm/mv/armadaxp/mptramp.S new file mode 100644 index 0000000..4d657e4 --- /dev/null +++ b/sys/arm/mv/armadaxp/mptramp.S @@ -0,0 +1,56 @@ +/*- + * Copyright 2011 Semihalf + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <machine/asm.h> +#include <machine/armreg.h> + +__FBSDID("$FreeBSD$"); + +ASENTRY_NP(mptramp) + mov r0, #0 + mcr p15, 0, r0, c7, c7, 0 + + mrs r3, cpsr + bic r3, r3, #(PSR_MODE) + orr r3, r3, #(PSR_SVC32_MODE) + msr cpsr_fsxc, r3 + + mrc p15, 0, r0, c0, c0, 5 + and r0, #0x0f /* Get CPU ID */ + + /* Read boot address for CPU */ + mov r1, #0x100 + mul r2, r0, r1 + ldr r1, Lpmureg + add r0, r2, r1 + ldr r1, [r0], #0x00 + + mov pc, r1 + +Lpmureg: + .word 0xd0022124 +END(mptramp) + |
