* (C) Copyright 2012
* Texas Instruments, <www.ti.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _SPL_H_
#define _SPL_H_
#include <linux/compiler.h>
#include <asm/spl.h>
+/* Value in r0 indicates we booted from U-Boot */
+#define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
+
/* Boot type */
#define MMCSD_MODE_UNDEFINED 0
#define MMCSD_MODE_RAW 1
-#define MMCSD_MODE_FAT 2
+#define MMCSD_MODE_FS 2
+#define MMCSD_MODE_EMMCBOOT 3
struct spl_image_info {
const char *name;
u32 flags;
};
+/*
+ * Information required to load data from a device
+ *
+ * @dev: Pointer to the device, e.g. struct mmc *
+ * @priv: Private data for the device
+ * @bl_len: Block length for reading in bytes
+ * @filename: Name of the fit image file.
+ * @read: Function to call to read from the device
+ */
+struct spl_load_info {
+ void *dev;
+ void *priv;
+ int bl_len;
+ const char *filename;
+ ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
+ void *buf);
+};
+
+/**
+ * spl_load_simple_fit() - Loads a fit image from a device.
+ * @info: Structure containing the information required to load data.
+ * @sector: Sector number where FIT image is located in the device
+ * @fdt: Pointer to the copied FIT header.
+ *
+ * Reads the FIT image @sector in the device. Loads u-boot image to
+ * specified load address and copies the dtb to end of u-boot image.
+ * Returns 0 on success.
+ */
+int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fdt);
+
#define SPL_COPY_PAYLOAD_ONLY 1
extern struct spl_image_info spl_image;
-extern u32 *boot_params_ptr;
/* SPL common functions */
void preloader_console_init(void);
u32 spl_boot_device(void);
-u32 spl_boot_mode(void);
-void spl_parse_image_header(const struct image_header *header);
+u32 spl_boot_mode(const u32 boot_device);
+void spl_set_header_raw_uboot(void);
+int spl_parse_image_header(const struct image_header *header);
void spl_board_prepare_for_linux(void);
+void spl_board_prepare_for_boot(void);
+int spl_board_ubi_load_image(u32 boot_device);
void __noreturn jump_to_image_linux(void *arg);
int spl_start_uboot(void);
void spl_display_print(void);
/* NAND SPL functions */
-void spl_nand_load_image(void);
+int spl_nand_load_image(void);
/* OneNAND SPL functions */
-void spl_onenand_load_image(void);
+int spl_onenand_load_image(void);
/* NOR SPL functions */
-void spl_nor_load_image(void);
+int spl_nor_load_image(void);
+
+/* UBI SPL functions */
+int spl_ubi_load_image(u32 boot_device);
/* MMC SPL functions */
-void spl_mmc_load_image(void);
+int spl_mmc_load_image(u32 boot_device);
/* YMODEM SPL functions */
-void spl_ymodem_load_image(void);
+int spl_ymodem_load_image(void);
/* SPI SPL functions */
-void spl_spi_load_image(void);
+int spl_spi_load_image(void);
/* Ethernet SPL functions */
-void spl_net_load_image(const char *device);
+int spl_net_load_image(const char *device);
+
+/* USB SPL functions */
+int spl_usb_load_image(void);
+
+/* SATA SPL functions */
+int spl_sata_load_image(void);
+
+/* SPL FAT image functions */
+int spl_load_image_fat(struct blk_desc *block_dev, int partition,
+ const char *filename);
+int spl_load_image_fat_os(struct blk_desc *block_dev, int partition);
+
+void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
+
+/* SPL EXT image functions */
+int spl_load_image_ext(struct blk_desc *block_dev, int partition,
+ const char *filename);
+int spl_load_image_ext_os(struct blk_desc *block_dev, int partition);
+
+/**
+ * spl_init() - Set up device tree and driver model in SPL if enabled
+ *
+ * Call this function in board_init_f() if you want to use device tree and
+ * driver model early, before board_init_r() is called. This function will
+ * be called from board_init_r() if not called earlier.
+ *
+ * If this is not called, then driver model will be inactive in SPL's
+ * board_init_f(), and no device tree will be available.
+ */
+int spl_init(void);
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void);
#endif
+
+/**
+ * spl_was_boot_source() - check if U-Boot booted from SPL
+ *
+ * This will normally be true, but if U-Boot jumps to second U-Boot, it will
+ * be false. This should be implemented by board-specific code.
+ *
+ * @return true if U-Boot booted from SPL, else false
+ */
+bool spl_was_boot_source(void);
+
#endif