diff options
Diffstat (limited to 'sys/mips/cavium/asm_octeon.S')
| -rw-r--r-- | sys/mips/cavium/asm_octeon.S | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/sys/mips/cavium/asm_octeon.S b/sys/mips/cavium/asm_octeon.S new file mode 100644 index 000000000000..94ac875a1996 --- /dev/null +++ b/sys/mips/cavium/asm_octeon.S @@ -0,0 +1,66 @@ +/*- + * Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org> + * 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. + * + * $FreeBSD$ + */ + +#include <machine/asm.h> + + .set noreorder + +#ifdef SMP +/* + * This function must be implemented in assembly because it is called early + * in AP boot without a valid stack. + */ +LEAF(platform_processor_id) + .set push + .set mips32r2 + jr ra + rdhwr v0, $0 + .set pop +END(platform_processor_id) + +/* + * Called on APs to wait until they are told to launch. + */ +LEAF(octeon_ap_wait) + jal platform_processor_id + nop + +1: ll t0, octeon_ap_boot + bne v0, t0, 1b + nop + + move t0, zero + sc t0, octeon_ap_boot + + beqz t0, 1b + nop + + j mpentry + nop +END(octeon_ap_wait) +#endif |