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-rw-r--r--arch/arm/mm/mmu.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 70974d75a075..fdaa9bb87c16 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -840,6 +840,20 @@ void __init reserve_node_zero(pg_data_t *pgdat)
reserve_bootmem_node(pgdat, 0xa0200000, 0x1000,
BOOTMEM_EXCLUSIVE);
+ /*
+ * U300 - This platform family can share physical memory
+ * between two ARM cpus, one running Linux and the other
+ * running another OS.
+ */
+ if (machine_is_u300()) {
+#ifdef CONFIG_MACH_U300_SINGLE_RAM
+#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \
+ CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
+ res_size = 0x00100000;
+#endif
+#endif
+ }
+
#ifdef CONFIG_SA1111
/*
* Because of the SA1111 DMA bug, we want to preserve our