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| author | John Crispin <blogic@openwrt.org> | 2012-07-22 10:56:00 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2012-08-01 19:58:04 +0400 |
| commit | a9188bc1628366bea7157209df93acc0f74625cc (patch) | |
| tree | 3664c8dff1ae8d1da38ebfeff676c416fd30c28b /arch/mips/lantiq/prom.c | |
| parent | e29b72f5e129b4dd4b77dc01dba340006bb103f8 (diff) | |
| download | linux-a9188bc1628366bea7157209df93acc0f74625cc.tar.xz | |
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 'arch/mips/lantiq/prom.c')
| -rw-r--r-- | arch/mips/lantiq/prom.c | 22 |
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 */ |