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ARM: OMAP2+: Round of the carve out memory requested to section_size

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memblock_steal tries to reserve physical memory during boot.
When the requested size is not aligned on the section size
then, the remaining memory available for lowmem becomes
unaligned on the section boundary. There is a issue with this,
which is discussed in the thread below.

https://lkml.org/lkml/2012/6/28/112

The final conclusion from the thread seems to
be align the memblock_steal calls on the SECTION boundary.
The issue comes out when LPAE is enabled, where the
section size is 2MB.

Boot tested this on OMAP5 evm with and without LPAE.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
R Sricharan 2012-09-12 12:44:13 +05:30 committed by Tony Lindgren
parent 9d7d6e363b
commit 7a2852908e
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mach-omap2/omap-secure.c
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@ -61,8 +61,8 @@ int __init omap_secure_ram_reserve_memblock(void)
{
u32 size = OMAP_SECURE_RAM_STORAGE;
size = ALIGN(size, SZ_1M);
omap_secure_memblock_base = arm_memblock_steal(size, SZ_1M);
size = ALIGN(size, SECTION_SIZE);
omap_secure_memblock_base = arm_memblock_steal(size, SECTION_SIZE);
return 0;
}