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powerpc: Fix boot problem due to AT_BASE_PLATFORM change

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Commit 9115d13453 ("powerpc: Enable
AT_BASE_PLATFORM aux vector") broke boot on 32-bit powerpc systems; we
have to use PTRRELOC to initialize powerpc_base_platform this early in
boot.

Bug reported by Jon Smirl.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nathan Lynch 2008-07-25 17:50:30 -05:00 committed by Benjamin Herrenschmidt
parent 5047887caf
commit fc532f8108
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/kernel/cputable.c
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@ -1660,8 +1660,8 @@ struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
* Set the base platform string once; assumes
* we're called with real pvr first.
*/
if (powerpc_base_platform == NULL)
powerpc_base_platform = t->platform;
if (*PTRRELOC(&powerpc_base_platform) == NULL)
*PTRRELOC(&powerpc_base_platform) = t->platform;
#if defined(CONFIG_PPC64) || defined(CONFIG_BOOKE)
/* ppc64 and booke expect identify_cpu to also call