powerpc/8xx: Fixing memory init issue with CONFIG_PIN_TLB
Activating CONFIG_PIN_TLB allows access to the 24 first Mbytes of memory at bootup instead of 8. It is needed for "big" kernels for instance when activating CONFIG_LOCKDEP_SUPPORT. This needs to be taken into account in init_32 too, otherwise memory allocation soon fails after startup. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Scott Wood <scottwood@freescale.com>
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@ -213,7 +213,12 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base,
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*/
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BUG_ON(first_memblock_base != 0);
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#ifdef CONFIG_PIN_TLB
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/* 8xx can only access 24MB at the moment */
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memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01800000));
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#else
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/* 8xx can only access 8MB at the moment */
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memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
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#endif
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}
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#endif /* CONFIG_8xx */
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