[U-Boot] [PATCH v4 1/5] arm bootm: Allow to pass board specified atags

[Pali Rohár]

Board can implement function setup_board_tags which is used for adding atags

Signed-off-by: Pali Rohár <pali.ro...@gmail.com>
---
Changes in v4:
   - Added commit message
   - Use __weak instead gcc attribute

 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 89df4dc..78a7fac 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 a9070d5..9323db0 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;
 
@@ -266,6 +267,8 @@ 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)
 {
@@ -307,6 +310,7 @@ 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");
-- 
1.7.9.5

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