linux-kernel - [PATCH 7/9] mips: Use NULL as the default DTB

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Date:	Tue, 19 Nov 2013 12:12:32 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Rob Herring <rob.herring@...xeda.com>
Cc:	devicetree@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org
Subject: [PATCH 7/9] mips: Use NULL as the default DTB

early_init_dt_scan() now takes care of falling back to the built-in DTB.

On Netlogic XLP, use initial_boot_params in device_tree_init(), like
the other MIPS sub-platforms do, as xlp_fdt_blob will now be NULL when
using the default built-in DTB.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-mips@...ux-mips.org
---
 arch/mips/lantiq/prom.c           |    2 +-
 arch/mips/mti-sead3/sead3-setup.c |    2 +-
 arch/mips/netlogic/xlp/dt.c       |    8 +++-----
 arch/mips/ralink/of.c             |    2 +-
 4 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c
index 19686c5bc5ed..582f6e4a5f6d 100644
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -71,7 +71,7 @@ void __init plat_mem_setup(void)
 	 * Load the builtin devicetree. This causes the chosen node to be
 	 * parsed resulting in our memory appearing
 	 */
-	__dt_setup_arch(&__dtb_start);
+	__dt_setup_arch(NULL);
 }
 
 void __init device_tree_init(void)
diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c
index 928ba84c8a78..3afec4507ea5 100644
--- a/arch/mips/mti-sead3/sead3-setup.c
+++ b/arch/mips/mti-sead3/sead3-setup.c
@@ -25,7 +25,7 @@ void __init plat_mem_setup(void)
 	 * Load the builtin devicetree. This causes the chosen node to be
 	 * parsed resulting in our memory appearing
 	 */
-	__dt_setup_arch(&__dtb_start);
+	__dt_setup_arch(NULL);
 }
 
 void __init device_tree_init(void)
diff --git a/arch/mips/netlogic/xlp/dt.c b/arch/mips/netlogic/xlp/dt.c
index 87250f378386..e52281b9214d 100644
--- a/arch/mips/netlogic/xlp/dt.c
+++ b/arch/mips/netlogic/xlp/dt.c
@@ -66,7 +66,6 @@ void __init *xlp_dt_init(void *fdtp)
 #endif
 		default:
 			/* Pick a built-in if any, and hope for the best */
-			fdtp = &__dtb_start;
 			break;
 		}
 	}
@@ -83,13 +82,12 @@ void __init xlp_early_init_devtree(void)
 void __init device_tree_init(void)
 {
 	unsigned long base, size;
-	struct boot_param_header *fdtp = xlp_fdt_blob;
 
-	if (!fdtp)
+	if (!initial_boot_params)
 		return;
 
-	base = virt_to_phys(fdtp);
-	size = be32_to_cpu(fdtp->totalsize);
+	base = virt_to_phys(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);
diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c
index 615603bd8063..d72a5bc1efc2 100644
--- a/arch/mips/ralink/of.c
+++ b/arch/mips/ralink/of.c
@@ -84,7 +84,7 @@ void __init plat_mem_setup(void)
 	 * Load the builtin devicetree. This causes the chosen node to be
 	 * parsed resulting in our memory appearing
 	 */
-	__dt_setup_arch(&__dtb_start);
+	__dt_setup_arch(NULL);
 
 	if (soc_info.mem_size)
 		add_memory_region(soc_info.mem_base, soc_info.mem_size * SZ_1M,
-- 
1.7.9.5

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