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>

common/spl/Makefile

@@ -16,4 +16,5 @@ obj-$(CONFIG_SPL_NAND_SUPPORT) += spl_nand.o
 obj-$(CONFIG_SPL_ONENAND_SUPPORT) += spl_onenand.o
 obj-$(CONFIG_SPL_NET_SUPPORT) += spl_net.o
 obj-$(CONFIG_SPL_MMC_SUPPORT) += spl_mmc.o
+obj-$(CONFIG_SPL_FAT_SUPPORT) += spl_fat.o
 endif

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

common/spl/spl_mmc.c

@@ -10,7 +10,6 @@
 #include <spl.h>
 #include <asm/u-boot.h>
 #include <mmc.h>
-#include <fat.h>
 #include <version.h>
 #include <image.h>
 
@@ -69,54 +68,6 @@ static int mmc_load_image_raw_os(struct mmc *mmc)
 }
 #endif
 
-#ifdef CONFIG_SPL_FAT_SUPPORT
-static int mmc_load_image_fat(struct mmc *mmc, const char *filename)
-{
-	int err;
-	struct image_header *header;
-
-	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
-static int mmc_load_image_fat_os(struct mmc *mmc)
-{
-	int err;
-
-	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 mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
-}
-#endif
-
-#endif
-
 void spl_mmc_load_image(void)
 {
 	struct mmc *mmc;
@@ -148,24 +99,17 @@ void spl_mmc_load_image(void)
 		if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
 #endif
 		err = mmc_load_image_raw(mmc,
-					 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
+			CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
 #ifdef CONFIG_SPL_FAT_SUPPORT
 	} else if (boot_mode == MMCSD_MODE_FAT) {
 		debug("boot mode - FAT\n");
-
-		err = fat_register_device(&mmc->block_dev,
-					  CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
-		if (err) {
-#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
-			printf("spl: fat register err - %d\n", err);
-#endif
-			hang();
-		}
-
 #ifdef CONFIG_SPL_OS_BOOT
-		if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
+		if (spl_start_uboot() || spl_load_image_fat_os(&mmc->block_dev,
+								CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION))
 #endif
-		err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
+		err = spl_load_image_fat(&mmc->block_dev,
+					CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION,
+					CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
 #endif
 	} else {
 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT

include/spl.h

@@ -11,6 +11,7 @@
 #include <linux/compiler.h>
 #include <asm/spl.h>
 
+
 /* Boot type */
 #define MMCSD_MODE_UNDEFINED	0
 #define MMCSD_MODE_RAW		1
@@ -60,6 +61,10 @@ void spl_spi_load_image(void);
 /* Ethernet SPL functions */
 void spl_net_load_image(const char *device);
 
+/* SPL FAT image functions */
+int spl_load_image_fat(block_dev_desc_t *block_dev, int partition, const char *filename);
+int spl_load_image_fat_os(block_dev_desc_t *block_dev, int partition);
+
 #ifdef CONFIG_SPL_BOARD_INIT
 void spl_board_init(void);
 #endif