[U-Boot] [PATCH v2] spl_nor.c: Support devicetree sizes different from 16k

[Mike Looijmans]

The devicetrees for various platforms already exceed 16k. Add a define
CONFIG_SYS_FDT_SIZE to specify the FDT size, and set to 16k for the
two boards that define this CONFIG_SYS_FDT_BASE parameter. This
allows platforms with larger devicetree blobs to boot from NOR.

Signed-off-by: Mike Looijmans <mike.looijmans at topic.nl>
---
v2: Instead of a default, just specify the value for the two boards that use it.
 common/spl/spl_nor.c                 | 4 ++--
 include/configs/a3m071.h             | 1 +
 include/configs/microblaze-generic.h | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/common/spl/spl_nor.c b/common/spl/spl_nor.c
index da2422f..8ea874c 100644
--- a/common/spl/spl_nor.c
+++ b/common/spl/spl_nor.c
@@ -40,11 +40,11 @@ int spl_nor_load_image(void)
 
 			/*
 			 * Copy DT blob (fdt) to SDRAM. Passing pointer to
-			 * flash doesn't work (16 KiB should be enough for DT)
+			 * flash doesn't work
 			 */
 			memcpy((void *)CONFIG_SYS_SPL_ARGS_ADDR,
 			       (void *)(CONFIG_SYS_FDT_BASE),
-			       (16 << 10));
+			       CONFIG_SYS_FDT_SIZE);
 
 			return 0;
 		} else {
diff --git a/include/configs/a3m071.h b/include/configs/a3m071.h
index 8f17dd1..ab2477c 100644
--- a/include/configs/a3m071.h
+++ b/include/configs/a3m071.h
@@ -334,6 +334,7 @@
 
 #define CONFIG_SYS_OS_BASE	0xfc200000
 #define CONFIG_SYS_FDT_BASE	0xfc1e0000
+#define CONFIG_SYS_FDT_SIZE	(16<<10)
 
 #define	CONFIG_EXTRA_ENV_SETTINGS					\
 	"netdev=eth0\0"							\
diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 047e756..e5bf700 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -305,6 +305,7 @@
 					 0x60000)
 #define CONFIG_SYS_FDT_BASE		(CONFIG_SYS_FLASH_BASE + \
 					 0x40000)
+#define CONFIG_SYS_FDT_SIZE		(16<<10)
 #define CONFIG_SYS_SPL_ARGS_ADDR	(CONFIG_SYS_TEXT_BASE + \
 					 0x1000000)
 
-- 
1.9.1