mpc85xx: add SPI kernel loader for TP-Link TL-WDR4900 v1

Similar to the lzma-loader on our MIPS targets, the spi-loader acts as
a second-stage loader that will then load and start the actual kernel.
As the TL-WDR4900 uses SPI-NOR and the P1010 family does not have support
for memory mapping of this type of flash, this loader needs to contain a
basic driver for the FSL ESPI controller.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
(cherry picked from commit a296055b82fbb20457273492069ce9d62009e2a1)

1 files changed, 61 insertions, 0 deletions

diff --git a/target/linux/mpc85xx/image/spi-loader/include/image.h b/target/linux/mpc85xx/image/spi-loader/include/image.h
new file mode 100644
index 0000000000..0377c2959e
--- /dev/null
+++ b/target/linux/mpc85xx/image/spi-loader/include/image.h
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Derived from U-Boot include/image.h:
+ *
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2005
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ ********************************************************************
+ * NOTE: This header file defines an interface to U-Boot. Including
+ * this (unmodified) header file in another file is considered normal
+ * use of U-Boot, and does *not* fall under the heading of "derived
+ * work".
+ ********************************************************************
+ */
+
+#pragma once
+
+#include <types.h>
+
+/*
+ * Compression Types
+ *
+ * The following are exposed to uImage header.
+ * New IDs *MUST* be appended at the end of the list and *NEVER*
+ * inserted for backward compatibility.
+ */
+enum {
+	IH_COMP_NONE		= 0,	/*  No	 Compression Used	*/
+	IH_COMP_GZIP,			/* gzip	 Compression Used	*/
+	IH_COMP_BZIP2,			/* bzip2 Compression Used	*/
+	IH_COMP_LZMA,			/* lzma  Compression Used	*/
+	IH_COMP_LZO,			/* lzo   Compression Used	*/
+	IH_COMP_LZ4,			/* lz4   Compression Used	*/
+	IH_COMP_ZSTD,			/* zstd   Compression Used	*/
+
+	IH_COMP_COUNT,
+};
+
+#define IH_MAGIC	0x27051956	/* Image Magic Number		*/
+#define IH_MAGIC_OKLI	0x4f4b4c49	/* 'OKLI' Magic Number */
+#define IH_NMLEN		32	/* Image Name Length		*/
+
+/*
+ * Legacy format image header,
+ * all data in network byte order (aka natural aka bigendian).
+ */
+typedef struct image_header {
+	uint32_t	ih_magic;	/* Image Header Magic Number	*/
+	uint32_t	ih_hcrc;	/* Image Header CRC Checksum	*/
+	uint32_t	ih_time;	/* Image Creation Timestamp	*/
+	uint32_t	ih_size;	/* Image Data Size		*/
+	uint32_t	ih_load;	/* Data	 Load  Address		*/
+	uint32_t	ih_ep;		/* Entry Point Address		*/
+	uint32_t	ih_dcrc;	/* Image Data CRC Checksum	*/
+	uint8_t		ih_os;		/* Operating System		*/
+	uint8_t		ih_arch;	/* CPU architecture		*/
+	uint8_t		ih_type;	/* Image Type			*/
+	uint8_t		ih_comp;	/* Compression Type		*/
+	uint8_t		ih_name[IH_NMLEN];	/* Image Name		*/
+} image_header_t;