[resend v2 16/19] drivers: mtd: nand: spl: Add support for nand SPL load image

[dinesh.maniyam at intel.com]

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

Add support for spl nand to load binary image from NAND
to RAM. Leverage the existing nand_spl_load_image from nand_spl_loaders.c

Signed-off-by: Dinesh Maniyam <dinesh.maniyam at intel.com>

---
v2:
- remove the "this patch is to" commit phrases
- Leverage the existing nand_spl_load_image from nand_spl_loaders.c
---
---
 drivers/mtd/nand/raw/cadence_spl.c | 59 ++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 drivers/mtd/nand/raw/cadence_spl.c

diff --git a/drivers/mtd/nand/raw/cadence_spl.c b/drivers/mtd/nand/raw/cadence_spl.c
new file mode 100644
index 0000000000..682ce2c512
--- /dev/null
+++ b/drivers/mtd/nand/raw/cadence_spl.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier:     GPL-2.0
+/*
+ * Copyright (C) 2024 Intel Corporation <www.intel.com> 
+ */
+
+#include <cadence-nand.h>
+#include <dm.h>
+#include <hang.h>
+#include <nand.h>
+#include <system-constants.h>
+
+/* Unselect after operation */
+void nand_deselect(void)
+{
+	struct mtd_info *mtd;
+	struct nand_chip *chip;
+
+	mtd = get_nand_dev_by_index(nand_curr_device);
+	if (!mtd)
+		hang();
+	chip = mtd_to_nand(mtd);
+
+	if (chip->select_chip)
+		chip->select_chip(mtd, -1);
+}
+
+static int nand_is_bad_block(int block)
+{
+	struct mtd_info *mtd;
+	struct nand_chip *chip;
+	loff_t ofs = block * CONFIG_SYS_NAND_BLOCK_SIZE;
+
+	mtd = get_nand_dev_by_index(nand_curr_device);
+	if (!mtd)
+		hang();
+	chip = mtd_to_nand(mtd);
+
+	return chip->block_bad(mtd, ofs);
+}
+
+static int nand_read_page(int block, int page, uchar *dst)
+{
+	struct mtd_info *mtd;
+	int page_addr = block * SYS_NAND_BLOCK_PAGES + page;
+	loff_t ofs = page_addr * CONFIG_SYS_NAND_PAGE_SIZE;
+	int ret;
+	size_t len = CONFIG_SYS_NAND_PAGE_SIZE;
+
+	mtd = get_nand_dev_by_index(nand_curr_device);
+	if (!mtd)
+		hang();
+
+	ret = nand_read(mtd, ofs, &len, dst);
+	if (ret)
+		printf("nand_read failed %d\n", ret);
+
+	return ret;
+}
+#include "nand_spl_loaders.c"
-- 
2.19.0