diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/boot/ps3-head.S | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/powerpc/boot/ps3-head.S')
-rw-r--r-- | kernel/arch/powerpc/boot/ps3-head.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/boot/ps3-head.S b/kernel/arch/powerpc/boot/ps3-head.S new file mode 100644 index 000000000..b6fcbaf50 --- /dev/null +++ b/kernel/arch/powerpc/boot/ps3-head.S @@ -0,0 +1,89 @@ +/* + * PS3 bootwrapper entry. + * + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * Copyright 2007 Sony Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "ppc_asm.h" + + .machine "ppc64" + + .text + +/* + * __system_reset_overlay - The PS3 first stage entry. + * + * The bootwraper build script copies the 512 bytes at symbol + * __system_reset_overlay to offset 0x100 of the rom image. This symbol + * must occupy 512 or less bytes. + * + * The PS3 has a single processor with two threads. + */ + + .globl __system_reset_overlay +__system_reset_overlay: + + /* Switch to 32-bit mode. */ + + mfmsr r9 + clrldi r9,r9,1 + mtmsrd r9 + nop + + /* Get thread number in r3 and branch. */ + + mfspr r3, 0x88 + cntlzw. r3, r3 + beq 1f + + /* Secondary goes to __secondary_hold in kernel. */ + + li r4, 0x60 + mtctr r4 + bctr + +1: + /* Save the value at addr zero for a null pointer write check later. */ + + li r4, 0 + lwz r3, 0(r4) + + /* Primary delays then goes to _zimage_start in wrapper. */ + + or 31, 31, 31 /* db16cyc */ + or 31, 31, 31 /* db16cyc */ + + lis r4, _zimage_start@ha + addi r4, r4, _zimage_start@l + mtctr r4 + bctr + + . = __system_reset_overlay + 512 + +/* + * __system_reset_kernel - Place holder for the kernel reset vector. + * + * The bootwrapper build script copies 512 bytes from offset 0x100 + * of the rom image to the symbol __system_reset_kernel. At runtime + * the bootwrapper program copies the 512 bytes at __system_reset_kernel + * to ram address 0x100. This symbol must occupy 512 bytes. + */ + + .globl __system_reset_kernel +__system_reset_kernel: + + . = __system_reset_kernel + 512 |