Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...

[sfrench/cifs-2.6.git] / arch / arm / mach-u300 / u300.c

diff --git a/arch/arm/mach-u300/u300.c b/arch/arm/mach-u300/u300.c
index d2a0b8847a18061e36576f5dec89bc567745d473..bfcda9820888b6083fd10779b63fe89580f76036 100644 (file)
--- a/arch/arm/mach-u300/u300.c
+++ b/arch/arm/mach-u300/u300.c
@@ -14,6 +14,7 @@
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
+#include <linux/memblock.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <mach/hardware.h>
@@ -22,6 +23,21 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 
+static void __init u300_reserve(void)
+{
+       /*
+        * U300 - This platform family can share physical memory
+        * between two ARM cpus, one running Linux and the other
+        * running another OS.
+        */
+#ifdef CONFIG_MACH_U300_SINGLE_RAM
+#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \
+       CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
+        memblock_reserve(PHYS_OFFSET, 0x00100000);
+#endif
+#endif
+}
+
 static void __init u300_init_machine(void)
 {
        u300_init_devices();
@@ -49,6 +65,7 @@ MACHINE_START(U300, MACH_U300_STRING)
        .io_pg_offst    = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc,
        .boot_params    = BOOT_PARAMS_OFFSET,
        .map_io         = u300_map_io,
+       .reserve        = u300_reserve,
        .init_irq       = u300_init_irq,
        .timer          = &u300_timer,
        .init_machine   = u300_init_machine,