[L] Change in coreboot[main]: util/riscv: Add starfive Image building tool

[Maximilian Brune (Code Review)]

Attention is currently required from: Philipp Hug, Ron Minnich.

Maximilian Brune has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/83849?usp=email )

Change subject: util/riscv: Add starfive Image building tool
......................................................................

util/riscv: Add starfive Image building tool

Add the tooling necessary to build an Image that can be found and
started by ROM code of the JH7110 SOC.

source: https://github.com/starfive-tech/Tools

Signed-off-by: Maximilian Brune 
Change-Id: Iab16c1e1f15f24e85c0ef1a3e838d024e1e49286
---
A util/riscv/starfive-jh7110-spl-tool/.gitignore
A util/riscv/starfive-jh7110-spl-tool/LICENSE
A util/riscv/starfive-jh7110-spl-tool/Makefile
A util/riscv/starfive-jh7110-spl-tool/README.md
A util/riscv/starfive-jh7110-spl-tool/crc32.c
A util/riscv/starfive-jh7110-spl-tool/spl_tool.c
6 files changed, 724 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/49/83849/1

diff --git a/util/riscv/starfive-jh7110-spl-tool/.gitignore b/util/riscv/starfive-jh7110-spl-tool/.gitignore
new file mode 100644
index 0000000..26c8888
--- /dev/null
+++ b/util/riscv/starfive-jh7110-spl-tool/.gitignore
@@ -0,0 +1,10 @@
+_*
+*.swp
+*.o
+*.out
+*.key
+*.diff
+*.patch
+*.out
+tags
+spl_tool
diff --git a/util/riscv/starfive-jh7110-spl-tool/LICENSE b/util/riscv/starfive-jh7110-spl-tool/LICENSE
new file mode 100644
index 0000000..36cc8c3
--- /dev/null
+++ b/util/riscv/starfive-jh7110-spl-tool/LICENSE
@@ -0,0 +1,365 @@
+================================================================
+  * Copyright 2018-2023 Shanghai StarFive Technology Co., Ltd.
+================================================================
+
+spl_tool license:
+
+Valid-License-Identifier: GPL-2.0
+Valid-License-Identifier: GPL-2.0-only
+Valid-License-Identifier: GPL-2.0+
+Valid-License-Identifier: GPL-2.0-or-later
+SPDX-URL: https://spdx.org/licenses/GPL-2.0.html
+Usage-Guide:
+  To use this license in source code, put one of the following SPDX
+  tag/value pairs into a comment according to the placement
+  guidelines in the licensing rules documentation.
+  For 'GNU General Public License (GPL) version 2 only' use:
+    SPDX-License-Identifier: GPL-2.0
+  or
+    SPDX-License-Identifier: GPL-2.0-only
+  For 'GNU General Public License (GPL) version 2 or any later version' use:
+    SPDX-License-Identifier: GPL-2.0+
+  or
+    SPDX-License-Identifier: GPL-2.0-or-later
+License-Text:
+
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/util/riscv/starfive-jh7110-spl-tool/Makefile b/util/riscv/starfive-jh7110-spl-tool/Makefile
new file mode 100644
index 0000000..c6b4d9b
--- /dev/null
+++ b/util/riscv/starfive-jh7110-spl-tool/Makefile
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0+
+override CFLAGS=-Wall -Wno-unused-result -Wno-format-truncation -O2
+
+SRCS = $(wildcard *.c)
+OBJS = $(SRCS:.c=.o)
+
+all: spl_tool
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+spl_tool: $(OBJS)
+	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $@
+
+clean:
+	rm -f *.o spl_tool
diff --git a/util/riscv/starfive-jh7110-spl-tool/README.md b/util/riscv/starfive-jh7110-spl-tool/README.md
new file mode 100644
index 0000000..e9f61e7
--- /dev/null
+++ b/util/riscv/starfive-jh7110-spl-tool/README.md
@@ -0,0 +1,54 @@
+## DESCRIPTION
+
+spl_tool is a jh7110 signature tool used to generate spl header information and generate u-boot-spl.bin.normal.out.
+
+spl_tool can also fix the issue of emmc booting.
+
+## Prerequisites
+
+Install required additional packages:
+
+```bash
+$ sudo apt-get install gcc make git
+```
+
+## Build
+
+just run `make`
+
+```bash
+$ make
+```
+
+## Run
+
+usage
+
+```bash
+$ ./spl_tool  -h
+
+			StarFive spl tool
+
+usage:
+-c, --creat-splhdr	creat spl hdr
+-i, --fix-imghdr	fixed img hdr for emmc boot.
+-a, --spl-bak-addr	set backup SPL addr(default: 0x200000)
+-v, --version		set version (default: 0x01010101)
+-f, --file		input file name(spl/img)
+-h, --help		show this information
+```
+
+Generate uboot-spl.bin.normal.out
+
+```bash
+$./spl_tool -c -f $(Uboot_PATH)/spl/u-boot-spl.bin
+ubsplhdr.sofs:0x240, ubsplhdr.bofs:0x200000, ubsplhdr.vers:0x1010101 name:$(Uboot_PATH)/spl/u-boot-spl.bin
+SPL written to $(Uboot_PATH)/spl/u-boot-spl.bin.normal.out successfully.
+```
+
+Fix the emmc boot issue
+
+```bash
+$ ./spl_tool -i -f sdcard.img
+IMG  sdcard.img fixed hdr successfully.
+```
\ No newline at end of file
diff --git a/util/riscv/starfive-jh7110-spl-tool/crc32.c b/util/riscv/starfive-jh7110-spl-tool/crc32.c
new file mode 100644
index 0000000..1394f97
--- /dev/null
+++ b/util/riscv/starfive-jh7110-spl-tool/crc32.c
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+static uint32_t crc32_reverse(uint32_t x)
+{
+	x = ((x & 0x55555555) << 1) | ((x >> 1) & 0x55555555);
+	x = ((x & 0x33333333) << 2) | ((x >> 2) & 0x33333333);
+	x = ((x & 0x0F0F0F0F) << 4) | ((x >> 4) & 0x0F0F0F0F);
+	x = (x << 24) | ((x & 0xFF00) << 8) | ((x >> 8) & 0xFF00) | (x >> 24);
+	return x;
+}
+
+uint32_t crc32(uint32_t iv, uint32_t sv, const void *data, size_t n)
+{
+	const unsigned char *ptr;
+	unsigned x;
+	uint32_t byte, crc;
+
+	crc = iv;
+	ptr = data;
+	while (n--) {
+		byte = *ptr++;
+		byte = crc32_reverse(byte);
+		for (x = 0; x < 8; x++, byte <<= 1) crc = ((crc ^ byte) & 0x80000000U) ? (crc << 1) ^ sv : (crc << 1);
+	}
+
+	return crc;
+}
+
+uint32_t crc32_final(uint32_t iv)
+{
+	return crc32_reverse(iv ^ ~0U);
+}
diff --git a/util/riscv/starfive-jh7110-spl-tool/spl_tool.c b/util/riscv/starfive-jh7110-spl-tool/spl_tool.c
new file mode 100644
index 0000000..039e520
--- /dev/null
+++ b/util/riscv/starfive-jh7110-spl-tool/spl_tool.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0+
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <endian.h>
+#include <errno.h>
+#include <limits.h>
+
+#define NOSIZE ((size_t)-1)
+
+extern uint32_t crc32(uint32_t iv, uint32_t sv, const void *data, size_t n);
+extern uint32_t crc32_final(uint32_t iv);
+
+/* all uint32_t ends up little endian in output header */
+struct __attribute__((__packed__)) ubootsplhdr {
+	uint32_t sofs;		/* offset of spl header: 64+256+256 = 0x240 */
+	uint32_t bofs;		/* SBL_BAK_OFFSET: Offset of backup SBL from Flash info start (from input_sbl_normal.cfg) */
+	uint8_t  zro2[636];
+	uint32_t vers;		/* version: shall be 0x01010101
+				 * (from https://doc-en.rvspace.org/VisionFive2/SWTRM/VisionFive2_SW_TRM/create_spl.h...) */
+	uint32_t fsiz;		/* u-boot-spl.bin size in bytes */
+	uint32_t res1;		/* Offset from HDR to SPL_IMAGE, 0x400 (00 04 00 00) currently */
+	uint32_t crcs;		/* CRC32 of u-boot-spl.bin */
+	uint8_t  zro3[364];
+};
+
+struct hdr_conf_t {
+	const char name[PATH_MAX];
+	uint32_t vers;
+	uint32_t bofs;
+	bool creat_hdr_flag;
+	bool fixed_img_hdr_flag;
+};
+
+static struct ubootsplhdr ubsplhdr;
+static struct ubootsplhdr imghdr;
+static struct hdr_conf_t g_hdr_conf;
+
+static char ubootspl[181072-sizeof(struct ubootsplhdr)+1];
+static char outpath[PATH_MAX];
+
+#define DEFVERSID 0x01010101
+#define DEFBACKUP 0x200000U
+#define CRCFAILED 0x5A5A5A5A
+
+static void xerror(int errnoval, const char *s)
+{
+	if (errnoval) perror(s);
+	else fprintf(stderr, "%s\n", s);
+	exit(2);
+}
+
+static void usage(void)
+{
+	const char help[] = {
+		"\n            StarFive spl tool\n\n"
+		"usage:\n"
+		"-c, --creat-splhdr	creat spl hdr\n"
+		"-i, --fix-imghdr	fixed img hdr for emmc boot.\n"
+		"-a, --spl-bak-addr	set backup SPL addr(default: 0x200000)\n"
+		"-v, --version		set version (default: 0x01010101)\n"
+		"-f, --file		input file name(spl/img)\n"
+		"-h, --help		show this information\n"
+	};
+	puts(help);
+}
+
+static int parse_args(int argc, char **argv)
+{
+	uint32_t v;
+
+	enum {
+		OPTION_CREAD_HDR = 1,
+		OPTION_FIXED_HDR,
+		OPTION_SBL_BAK_OFFSET,
+		OPTION_VERSION,
+		OPTION_FILENAME,
+		OPTION_HELP,
+	};
+
+	static struct option long_options[] =
+	{
+		{"creat-splhdr" , no_argument, NULL, OPTION_CREAD_HDR},
+		{"fix-imghdr" , no_argument, NULL, OPTION_FIXED_HDR},
+		{"spl-bak-addr" , required_argument, NULL, OPTION_SBL_BAK_OFFSET},
+		{"version", required_argument, NULL, OPTION_VERSION},
+		{"file", required_argument, NULL, OPTION_FILENAME},
+		{"help", no_argument, NULL, OPTION_HELP},
+		{0, 0, 0, 0}
+	};
+
+	while (1)
+	{
+		/* getopt_long stores the option index here. */
+		int option_index = 0;
+
+		int c = getopt_long(argc, argv, "cio:v:f:h", long_options, &option_index);
+
+		/* Detect the end of the options. */
+		if (c == -1)
+		    break;
+
+		switch (c) {
+		case 0:
+			/* If this option set a flag, do nothing else now. */
+			if (long_options[option_index].flag != 0)
+			break;
+
+		case 'c':
+		case OPTION_CREAD_HDR:
+			g_hdr_conf.creat_hdr_flag = true;
+			g_hdr_conf.fixed_img_hdr_flag = false;
+			break;
+
+		case 'i':
+		case OPTION_FIXED_HDR:
+			g_hdr_conf.fixed_img_hdr_flag = true;
+			g_hdr_conf.creat_hdr_flag = false;
+			break;
+
+		case 'a':
+		case OPTION_SBL_BAK_OFFSET:
+			v = (uint32_t)strtoul(optarg, NULL, 16);
+			v = htole32(v);
+			g_hdr_conf.bofs = v;
+			break;
+
+		case 'v':
+		case OPTION_VERSION:
+			v = (uint32_t)strtoul(optarg, NULL, 16);
+			v = htole32(v);
+			g_hdr_conf.vers = v;
+			break;
+
+		case 'f':
+		case OPTION_FILENAME:
+			strcpy((char*)g_hdr_conf.name, optarg);
+			break;
+
+		case 'h':
+		case OPTION_HELP:
+			usage();
+			break;
+
+		default:
+			usage();
+			break;
+		}
+	}
+	return 0;
+}
+
+int spl_creat_hdr(struct hdr_conf_t *conf)
+{
+	int fd;
+	uint32_t v;
+	size_t sz;
+
+	if (!conf->creat_hdr_flag)
+		return 0;
+
+	ubsplhdr.sofs = htole32(0x240U);
+	ubsplhdr.res1 = htole32(0x400U);
+	ubsplhdr.bofs = conf->bofs ? conf->bofs : htole32(DEFBACKUP);
+	ubsplhdr.vers = conf->vers ? conf->vers : htole32(DEFVERSID);
+
+	printf("ubsplhdr.sofs:%#x, ubsplhdr.bofs:%#x, ubsplhdr.vers:%#x name:%s\n",
+		ubsplhdr.sofs, ubsplhdr.bofs, ubsplhdr.vers, conf->name);
+
+	fd = open(conf->name, O_RDONLY);
+	if (fd == -1) xerror(errno, conf->name);
+
+	sz = (size_t)read(fd, ubootspl, sizeof(ubootspl));
+	if (sz == NOSIZE) xerror(errno, conf->name);
+	if (sz >= (sizeof(ubootspl)))
+		xerror(0, "File too large! Please rebuild your SPL with -Os. Maximum allowed size is 180048 bytes.");
+	v = htole32((uint32_t)sz);
+	ubsplhdr.fsiz = v;
+
+	close(fd);
+	snprintf(outpath, sizeof(outpath), "%s.normal.out", conf->name);
+	fd = creat(outpath, 0666);
+	if (fd == -1) xerror(errno, outpath);
+
+	v = crc32(~0U, 0x04c11db7U, ubootspl, sz);
+	v = crc32_final(v);
+	v = htole32(v);
+	ubsplhdr.crcs = v;
+
+	write(fd, &ubsplhdr, sizeof(struct ubootsplhdr));
+	write(fd, ubootspl, sz);
+
+	close(fd);
+
+	printf("SPL written to %s successfully.\n", outpath);
+
+	return 0;
+}
+
+int img_fixed_hdr(struct hdr_conf_t *conf)
+{
+	int fd;
+	size_t sz;
+
+	if (!conf->fixed_img_hdr_flag)
+		return 0;
+
+	fd = open(conf->name, O_RDWR);
+	if (fd == -1) xerror(errno, conf->name);
+
+	sz = (size_t)read(fd, &imghdr, sizeof(imghdr));
+	if (sz == NOSIZE) xerror(errno, conf->name);
+
+	/* When starting with emmc, bootrom will read 0x0 instead of partition 0. (Known issues).
+	Read GPT PMBR+Header, then write the backup address at 0x4, and write the wrong CRC
+	check value at 0x290, so that bootrom CRC check fails and jump to the backup address
+	to load the real spl. */
+
+	imghdr.bofs = conf->bofs ? conf->bofs : htole32(DEFBACKUP);
+	imghdr.crcs = htole32(CRCFAILED);
+
+	lseek(fd, 0x0, SEEK_SET);
+	write(fd, &imghdr, sizeof(imghdr));
+	close(fd);
+
+	printf("IMG  %s fixed hdr successfully.\n", conf->name);
+
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	parse_args(argc, argv);
+	spl_creat_hdr(&g_hdr_conf);
+	img_fixed_hdr(&g_hdr_conf);
+}