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[POWERPC] 4xx: Introduce cpu_setup functionality to 44x platform

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This adds cpu_setup functionality for ppc44x platform.
Low level cpu-spefic initialization routines should be
placed in cpu_setup_44x.S and a callback should be
added to cputable. The cpu_setup is invoked
by identify_cpu() function at early init.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Valentine Barshak
2007-09-22 00:44:38 +10:00
committed by Josh Boyer
parent 2e71cc0d51
commit 84e3ad5b91
3 changed files with 27 additions and 6 deletions
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13
arch/powerpc/kernel/cputable.c
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@@ -1319,17 +1319,18 @@ struct cpu_spec *identify_cpu(unsigned long offset, unsigned int pvr)
for (i = 0; i < ARRAY_SIZE(cpu_specs); i++,s++)
if ((pvr & s->pvr_mask) == s->pvr_value) {
*cur = cpu_specs + i;
#ifdef CONFIG_PPC64
/* ppc64 expects identify_cpu to also call setup_cpu
* for that processor. I will consolidate that at a
* later time, for now, just use our friend #ifdef.
#if defined(CONFIG_PPC64) || defined(CONFIG_BOOKE)
/* ppc64 and booke expect identify_cpu to also call
* setup_cpu for that processor. I will consolidate
* that at a later time, for now, just use #ifdef.
* we also don't need to PTRRELOC the function pointer
* on ppc64 as we are running at 0 in real mode.
* on ppc64 and booke as we are running at 0 in real
* mode on ppc64 and reloc_offset is always 0 on booke.
*/
if (s->cpu_setup) {
s->cpu_setup(offset, s);
}
#endif /* CONFIG_PPC64 */
#endif /* CONFIG_PPC64 || CONFIG_BOOKE */
return s;
}
BUG();