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MIPS: Lantiq: Add device_tree_init function

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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>
This commit is contained in:
John Crispin 2012-07-22 08:56:00 +02:00 committed by Ralf Baechle
parent e29b72f5e1
commit a9188bc162
1 changed files with 22 additions and 0 deletions
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22
arch/mips/lantiq/prom.c
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@ -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 */