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authorDavid S. Miller <davem@davemloft.net>2012-05-28 00:14:48 -0400
committerDavid S. Miller <davem@davemloft.net>2012-05-28 00:14:48 -0400
commitc2e1ff39c106ab026e3feb29c038855b7ed00393 (patch)
treee0255b5b9aed8645edc4426f2d4972280910e065 /arch/arm/mach-spear13xx/headsmp.S
parent456d3d42460c1fc20ba0d27442443fcd63aaac35 (diff)
parentb48b2c3e50433ff6f7e46186daa7f986bd960215 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Pull in Linus's tree to get the commits that blew away ARCH_USES_GETTIMEOFFSET but didn't update Sparc correctly, so that I can apply Stephen Rothwell's fix for that mis-merge. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm/mach-spear13xx/headsmp.S')
-rw-r--r--arch/arm/mach-spear13xx/headsmp.S47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/arm/mach-spear13xx/headsmp.S b/arch/arm/mach-spear13xx/headsmp.S
new file mode 100644
index 000000000000..ed85473a047f
--- /dev/null
+++ b/arch/arm/mach-spear13xx/headsmp.S
@@ -0,0 +1,47 @@
1/*
2 * arch/arm/mach-spear13XX/headsmp.S
3 *
4 * Picked from realview
5 * Copyright (c) 2012 ST Microelectronics Limited
6 * Shiraz Hashim <shiraz.hashim@st.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/linkage.h>
14#include <linux/init.h>
15
16 __INIT
17
18/*
19 * spear13xx specific entry point for secondary CPUs. This provides
20 * a "holding pen" into which all secondary cores are held until we're
21 * ready for them to initialise.
22 */
23ENTRY(spear13xx_secondary_startup)
24 mrc p15, 0, r0, c0, c0, 5
25 and r0, r0, #15
26 adr r4, 1f
27 ldmia r4, {r5, r6}
28 sub r4, r4, r5
29 add r6, r6, r4
30pen: ldr r7, [r6]
31 cmp r7, r0
32 bne pen
33
34 /* re-enable coherency */
35 mrc p15, 0, r0, c1, c0, 1
36 orr r0, r0, #(1 << 6) | (1 << 0)
37 mcr p15, 0, r0, c1, c0, 1
38 /*
39 * we've been released from the holding pen: secondary_stack
40 * should now contain the SVC stack for this core
41 */
42 b secondary_startup
43
44 .align
451: .long .
46 .long pen_release
47ENDPROC(spear13xx_secondary_startup)