[PATCH 1/3] arm: socfpga: Use custom header target buffer in SPL

[dinesh.maniyam at altera.com]

From: Dinesh Maniyam <dinesh.maniyam at altera.com>

Allocate buffer from bottom half of DDR for the image headers in SPL on
Arria10. This allows SPL to load the fitImage header, parse it,
extract the FPGA core bitstream section from it, and program the FPGA.

Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
Signed-off-by: Dinesh Maniyam <dinesh.maniyam at altera.com>
---
 arch/arm/mach-socfpga/spl_a10.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/mach-socfpga/spl_a10.c b/arch/arm/mach-socfpga/spl_a10.c
index c20376f7f8e..c3fd90de8c5 100644
--- a/arch/arm/mach-socfpga/spl_a10.c
+++ b/arch/arm/mach-socfpga/spl_a10.c
@@ -27,6 +27,8 @@
 #include <watchdog.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/fpga_manager.h>
+#include <exports.h>
+#include <log.h>
 #include <mmc.h>
 #include <memalign.h>
 #include <linux/delay.h>
@@ -284,3 +286,13 @@ void spl_board_prepare_for_boot(void)
 	writel(FSBL_IMAGE_IS_VALID, socfpga_get_sysmgr_addr() +
 	       SYSMGR_A10_ROMCODE_INITSWSTATE);
 }
+
+#if CONFIG_IS_ENABLED(SPL_LOAD_FIT) && CONFIG_IS_ENABLED(SPL_SPI_LOAD)
+struct legacy_img_hdr  *spl_get_load_buffer(int offset, size_t size)
+{
+	if (gd->ram_size)
+		return (struct legacy_img_hdr *)(gd->ram_size / 2);
+	else
+		return NULL;
+}
+#endif
-- 
2.43.7