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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/boot/epapr.c | |
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/epapr.c')
-rw-r--r-- | kernel/arch/powerpc/boot/epapr.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/boot/epapr.c b/kernel/arch/powerpc/boot/epapr.c new file mode 100644 index 000000000..02e91aa21 --- /dev/null +++ b/kernel/arch/powerpc/boot/epapr.c @@ -0,0 +1,66 @@ +/* + * Bootwrapper for ePAPR compliant firmwares + * + * Copyright 2010 David Gibson <david@gibson.dropbear.id.au>, IBM Corporation. + * + * Based on earlier bootwrappers by: + * (c) Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp,\ + * and + * Scott Wood <scottwood@freescale.com> + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ops.h" +#include "stdio.h" +#include "io.h" +#include <libfdt.h> + +BSS_STACK(4096); + +#define EPAPR_SMAGIC 0x65504150 +#define EPAPR_EMAGIC 0x45504150 + +static unsigned epapr_magic; +static unsigned long ima_size; +static unsigned long fdt_addr; + +static void platform_fixups(void) +{ + if ((epapr_magic != EPAPR_EMAGIC) + && (epapr_magic != EPAPR_SMAGIC)) + fatal("r6 contained 0x%08x instead of ePAPR magic number\n", + epapr_magic); + + if (ima_size < (unsigned long)_end) + printf("WARNING: Image loaded outside IMA!" + " (_end=%p, ima_size=0x%lx)\n", _end, ima_size); + if (ima_size < fdt_addr) + printf("WARNING: Device tree address is outside IMA!" + "(fdt_addr=0x%lx, ima_size=0x%lx)\n", fdt_addr, + ima_size); + if (ima_size < fdt_addr + fdt_totalsize((void *)fdt_addr)) + printf("WARNING: Device tree extends outside IMA!" + " (fdt_addr=0x%lx, size=0x%x, ima_size=0x%lx\n", + fdt_addr, fdt_totalsize((void *)fdt_addr), ima_size); +} + +void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + epapr_magic = r6; + ima_size = r7; + fdt_addr = r3; + + /* FIXME: we should process reserve entries */ + + simple_alloc_init(_end, ima_size - (unsigned long)_end, 32, 64); + + fdt_init((void *)fdt_addr); + + serial_console_init(); + platform_ops.fixups = platform_fixups; +} |