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powerpc: Get the number of SLBs from "slb-size" property 

The PAPR says that the property for specifying the number of SLBs should
be called "slb-size".  We currently only look for "ibm,slb-size" because
this is what firmware actually presents.

This patch makes us look for the "slb-size" property as well and in
preference to the "ibm,slb-size".  This should future proof us if
firmware changes to match PAPR.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
Michael Neuling 2009-01-14 13:42:41 +00:00 committed by Benjamin Herrenschmidt
parent 9ba0fdbfae
commit b60c31d85a
1 changed files with 5 additions and 0 deletions
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5
arch/powerpc/kernel/prom.c
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@ -590,6 +590,11 @@ static void __init check_cpu_slb_size(unsigned long node)
{
u32 *slb_size_ptr;
slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL);
if (slb_size_ptr != NULL) {
mmu_slb_size = *slb_size_ptr;
return;
}
slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
if (slb_size_ptr != NULL) {
mmu_slb_size = *slb_size_ptr;