spl: common: Move FAT funcs to a common file

Move the FAT functions to a common location for reuse.

Signed-off-by: Dan Murphy <dmurphy@ti.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/common/spl/spl_fat.c b/common/spl/spl_fat.c
new file mode 100644
index 0000000000..9b40584008
--- /dev/null
+++ b/common/spl/spl_fat.c
@@ -0,0 +1,96 @@
+/*
+ * (C) Copyright 2014
+ * Texas Instruments, <www.ti.com>
+ *
+ * Dan Murphy <dmurphy@ti.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * FAT Image Functions copied from spl_mmc.c
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <asm/u-boot.h>
+#include <fat.h>
+#include <image.h>
+
+static int fat_registered;
+
+#ifdef CONFIG_SPL_FAT_SUPPORT
+static int spl_register_fat_device(block_dev_desc_t *block_dev, int partition)
+{
+	int err = 0;
+
+	if (fat_registered)
+		return err;
+
+	err = fat_register_device(block_dev, partition);
+	if (err) {
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+		printf("spl: fat register err - %d\n", err);
+#endif
+		hang();
+	}
+
+	fat_registered = 1;
+
+	return err;
+}
+
+int spl_load_image_fat(block_dev_desc_t *block_dev,
+						int partition,
+						const char *filename)
+{
+	int err;
+	struct image_header *header;
+
+	err = spl_register_fat_device(block_dev, partition);
+	if (err <= 0)
+		goto end;
+
+	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
+						sizeof(struct image_header));
+
+	err = file_fat_read(filename, header, sizeof(struct image_header));
+	if (err <= 0)
+		goto end;
+
+	spl_parse_image_header(header);
+
+	err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
+
+end:
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+	if (err <= 0)
+		printf("spl: error reading image %s, err - %d\n",
+		       filename, err);
+#endif
+
+	return (err <= 0);
+}
+
+#ifdef CONFIG_SPL_OS_BOOT
+int spl_load_image_fat_os(block_dev_desc_t *block_dev, int partition)
+{
+	int err;
+
+	err = spl_register_fat_device(block_dev, partition);
+	if (err <= 0)
+		return -1;
+
+	err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
+			    (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
+	if (err <= 0) {
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+		printf("spl: error reading image %s, err - %d\n",
+		       CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
+#endif
+		return -1;
+	}
+
+	return spl_load_image_fat(block_dev, partition,
+			CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
+}
+#endif
+#endif