From 89e6f13849fa583a475aa2bd733021d850098bf4 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Pali=20Roh=C3=A1r?= <pali.rohar@gmail.com>
Date: Fri, 19 Oct 2012 02:00:04 +0000
Subject: [PATCH] arm bootm: Allow to pass board specified atags
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Board can implement function setup_board_tags which is used for adding atags

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
---
 arch/arm/include/asm/setup.h | 5 +++++
 arch/arm/lib/bootm.c         | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 89df4dc708..78a7facfc3 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -267,3 +267,8 @@ struct meminfo {
 extern struct meminfo meminfo;
 
 #endif
+
+/*
+ * Board specified tags
+ */
+void setup_board_tags(struct tag **in_params);
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 37476cc90d..1bd2730856 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -34,6 +34,7 @@
 #include <libfdt.h>
 #include <fdt_support.h>
 #include <asm/bootm.h>
+#include <linux/compiler.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -269,6 +270,8 @@ static int create_fdt(bootm_headers_t *images)
 }
 #endif
 
+__weak void setup_board_tags(struct tag **in_params) {}
+
 /* Subcommand: PREP */
 static void boot_prep_linux(bootm_headers_t *images)
 {
@@ -310,6 +313,7 @@ static void boot_prep_linux(bootm_headers_t *images)
 			setup_initrd_tag(gd->bd, images->rd_start,
 			images->rd_end);
 #endif
+		setup_board_tags(&params);
 		setup_end_tag(gd->bd);
 #else /* all tags */
 		printf("FDT and ATAGS support not compiled in - hanging\n");
-- 
2.25.1