sh: URAM node support for SH7722.
This adds the URAM block on SH7722 as a separate node.
Sparsemem is required for this, or it can simply be disabled
by explicitly selecting a flatmem model.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
index 1143fbf..82dba7f 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
@@ -1,7 +1,7 @@
/*
* SH7722 Setup
*
- * Copyright (C) 2006 Paul Mundt
+ * Copyright (C) 2006 - 2007 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
@@ -10,6 +10,7 @@
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/serial.h>
+#include <linux/mm.h>
#include <asm/sci.h>
static struct plat_sci_port sci_platform_data[] = {
@@ -78,3 +79,9 @@
{
make_ipr_irq(sh7722_ipr_map, ARRAY_SIZE(sh7722_ipr_map));
}
+
+void __init plat_mem_setup(void)
+{
+ /* Register the URAM space as Node 1 */
+ setup_bootmem_node(1, 0x055f0000, 0x05610000);
+}
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 8c5b73a..dd9b226 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -211,6 +211,7 @@
select CPU_SH4AL_DSP
select CPU_SHX2
select CPU_HAS_IPR_IRQ
+ select ARCH_SPARSEMEM_ENABLE
endchoice
@@ -321,6 +322,7 @@
config MAX_ACTIVE_REGIONS
int
+ default "2" if (CPU_SUBTYPE_SH7722 && SPARSEMEM)
default "1"
config ARCH_POPULATES_NODE_MAP