ARM: Move platform memory reservations out of generic code

Move the platform specific bootmem memory reservations out of
arch/arm/mm/mmu.c into their respective platform files.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

4 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
new file mode 100644
index 000000000000..5f96e1518aa9
--- /dev/null
+++ b/arch/arm/mach-integrator/common.h
@@ -0,0 +1 @@
+void integrator_reserve(void);
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index b02cfc06e0ae..f815a1863f70 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -14,6 +14,7 @@
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/bootmem.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
 #include <linux/termios.h>
@@ -30,6 +31,7 @@
 #include <asm/system.h>
 #include <asm/leds.h>
 #include <asm/mach/time.h>
+#include <asm/pgtable.h>
 
 static struct amba_pl010_data integrator_uart_data;
 
@@ -215,3 +217,13 @@ void cm_control(u32 mask, u32 set)
 }
 
 EXPORT_SYMBOL(cm_control);
+
+/*
+ * We need to stop things allocating the low memory; ideally we need a
+ * better implementation of GFP_DMA which does not assume that DMA-able
+ * memory starts at zero.
+ */
+void __init integrator_reserve(void)
+{
+        reserve_bootmem(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET, BOOTMEM_DEFAULT);
+}
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 227cf4d05088..6ab5a03ab9d8 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -48,6 +48,8 @@
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
 
+#include "common.h"
+
 /* 
  * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
  * is the (PA >> 12).
@@ -502,6 +504,7 @@ MACHINE_START(INTEGRATOR, "ARM-Integrator")
         .io_pg_offst    = ((0xf1600000) >> 18) & 0xfffc,
         .boot_params    = 0x00000100,
         .map_io         = ap_map_io,
+        .reserve        = integrator_reserve,
         .init_irq       = ap_init_irq,
         .timer          = &ap_timer,
         .init_machine   = ap_init,
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index cde57b2b83b5..05db40e3c4f7 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -43,6 +43,8 @@
 
 #include <plat/timer-sp.h>
 
+#include "common.h"
+
 #define INTCP_PA_FLASH_BASE             0x24000000
 #define INTCP_FLASH_SIZE                SZ_32M
 
@@ -601,6 +603,7 @@ MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP")
         .io_pg_offst    = ((0xf1600000) >> 18) & 0xfffc,
         .boot_params    = 0x00000100,
         .map_io         = intcp_map_io,
+        .reserve        = integrator_reserve,
         .init_irq       = intcp_init_irq,
         .timer          = &cp_timer,
         .init_machine   = intcp_init,