Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
[sfrench/cifs-2.6.git] / arch / arm / mach-prima2 / headsmp.S
1 /*
2  * Entry of the second core for CSR Marco dual-core SMP SoCs
3  *
4  * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
5  *
6  * Licensed under GPLv2 or later.
7  */
8
9 #include <linux/linkage.h>
10 #include <linux/init.h>
11
12 /*
13  * SIRFSOC specific entry point for secondary CPUs.  This provides
14  * a "holding pen" into which all secondary cores are held until we're
15  * ready for them to initialise.
16  */
17 ENTRY(sirfsoc_secondary_startup)
18         mrc     p15, 0, r0, c0, c0, 5
19         and     r0, r0, #15
20         adr     r4, 1f
21         ldmia   r4, {r5, r6}
22         sub     r4, r4, r5
23         add     r6, r6, r4
24 pen:    ldr     r7, [r6]
25         cmp     r7, r0
26         bne     pen
27
28         /*
29          * we've been released from the holding pen: secondary_stack
30          * should now contain the SVC stack for this core
31          */
32         b       secondary_startup
33 ENDPROC(sirfsoc_secondary_startup)
34
35         .align
36 1:      .long   .
37         .long   prima2_pen_release