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authorJohn Crispin <blogic@openwrt.org>2012-07-22 08:56:00 +0200
committerRalf Baechle <ralf@linux-mips.org>2012-08-01 17:58:04 +0200
commita9188bc1628366bea7157209df93acc0f74625cc (patch)
tree3664c8dff1ae8d1da38ebfeff676c416fd30c28b /arch/mips/lantiq/prom.c
parentMIPS: Lantiq: Fix interface clock and PCI control register offset (diff)
downloadlinux-a9188bc1628366bea7157209df93acc0f74625cc.tar.xz
linux-a9188bc1628366bea7157209df93acc0f74625cc.zip
MIPS: Lantiq: Add device_tree_init function
Add a lantiq specific version of device_tree_init. The generic MIPS version was removed by. commit 594e966bc412d64eec9282d28ce511bdd62fea39 Author: David Daney <david.daney@cavium.com> Date: Thu Jul 5 18:12:38 2012 +0200 MIPS: Prune some target specific code out of prom.c Signed-off-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/4116/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to '')
-rw-r--r--arch/mips/lantiq/prom.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c
index d185e8477fdf..6cfd6117fbfd 100644
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -8,7 +8,10 @@
#include <linux/export.h>
#include <linux/clk.h>
+#include <linux/bootmem.h>
#include <linux/of_platform.h>
+#include <linux/of_fdt.h>
+
#include <asm/bootinfo.h>
#include <asm/time.h>
@@ -70,6 +73,25 @@ void __init plat_mem_setup(void)
__dt_setup_arch(&__dtb_start);
}
+void __init device_tree_init(void)
+{
+ unsigned long base, size;
+
+ if (!initial_boot_params)
+ return;
+
+ base = virt_to_phys((void *)initial_boot_params);
+ size = be32_to_cpu(initial_boot_params->totalsize);
+
+ /* Before we do anything, lets reserve the dt blob */
+ reserve_bootmem(base, size, BOOTMEM_DEFAULT);
+
+ unflatten_device_tree();
+
+ /* free the space reserved for the dt blob */
+ free_bootmem(base, size);
+}
+
void __init prom_init(void)
{
/* call the soc specific detetcion code and get it to fill soc_info */