[U-Boot] [UBOOT PATCH v4 1/5] lib: fdtdec: Update ram_base to store ram start adddress

[Siva Durga Prasad Paladugu]

This patch updates the ram_base to store the start address of
the first bank DRAM and the use this ram_base to calculate ram_top
properly. This patch fixes the erroneous calculation of ram_top
incase of non zero ram start address.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---
Changes from v3:
- Rebased on latest master and used
  available ram_base

Changes from v2:
- Used new varibale ram_start
- Rename fdtdec_setup_memory_size

Changes from v1:
- None
---
 common/board_f.c | 4 ++--
 lib/fdtdec.c     | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/common/board_f.c b/common/board_f.c
index e943347..88d7700 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -281,9 +281,9 @@ static int setup_dest_addr(void)
 	gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 #endif
 #ifdef CONFIG_SYS_SDRAM_BASE
-	gd->ram_top = CONFIG_SYS_SDRAM_BASE;
+	gd->ram_base = CONFIG_SYS_SDRAM_BASE;
 #endif
-	gd->ram_top += get_effective_memsize();
+	gd->ram_top = gd->ram_base + get_effective_memsize();
 	gd->ram_top = board_get_usable_ram_top(gd->mon_len);
 	gd->relocaddr = gd->ram_top;
 	debug("Ram top: %08lX\n", (ulong)gd->ram_top);
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 1b0c430..66dff0f 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1173,6 +1173,7 @@ int fdtdec_setup_memory_size(void)
 	}
 
 	gd->ram_size = (phys_size_t)(res.end - res.start + 1);
+	gd->ram_base = (unsigned long)res.start;
 	debug("%s: Initial DRAM size %llx\n", __func__,
 	      (unsigned long long)gd->ram_size);
 
-- 
2.7.4