[PATCH 1/2] arch: arm: mach-socfpga: Use custom header target buffer in SPL

[sieu.mun.tang at intel.com]

From: Tien Fong Chee <tien.fong.chee at intel.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: Sieu Mun Tang <sieu.mun.tang at intel.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 ec67a5b0eb..bfcbd1dfe1 100644
--- a/arch/arm/mach-socfpga/spl_a10.c
+++ b/arch/arm/mach-socfpga/spl_a10.c
@@ -28,6 +28,8 @@
 #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>
@@ -281,3 +283,13 @@ void spl_board_prepare_for_boot(void)
 	writel(FSBL_IMAGE_IS_VALID, socfpga_get_sysmgr_addr() +
 	       SYSMGR_A10_ROMCODE_INITSWSTATE);
 }
+
+#if defined(CONFIG_SPL_LOAD_FIT) && defined(CONFIG_SPL_SPI_LOAD)
+struct image_header *spl_get_load_buffer(int offset, size_t size)
+{
+	if (gd->ram_size)
+		return (struct image_header *)(gd->ram_size / 2);
+	else
+		return NULL;
+}
+#endif
-- 
2.25.1