Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 187 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/tools/mkexynosspl.c b/qemu/roms/u-boot/tools/mkexynosspl.c
new file mode 100644
index 000000000..32b786c72
--- /dev/null
+++ b/qemu/roms/u-boot/tools/mkexynosspl.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <compiler.h>
+
+#define CHECKSUM_OFFSET		(14*1024-4)
+#define FILE_PERM		(S_IRUSR | S_IWUSR | S_IRGRP \
+				| S_IWGRP | S_IROTH | S_IWOTH)
+/*
+ * Requirement for the fixed size SPL header:
+ * IROM code reads first (CHECKSUM_OFFSET + 4) bytes from boot device. It then
+ * calculates the checksum of CHECKSUM_OFFSET bytes and compares with data at
+ * CHECKSUM_OFFSET location.
+ *
+ * Requirement for the variable size SPL header:
+
+ * IROM code reads the below header to find out the size of the blob (total
+ * size, header size included) and its checksum. Then it reads the rest of the
+ * blob [i.e size - sizeof(struct var_size_header) bytes], calculates the
+ * checksum and compares it with value read from the header.
+ */
+struct var_size_header {
+	uint32_t spl_size;
+	uint32_t spl_checksum;
+	uint32_t reserved[2];
+};
+
+static const char *prog_name;
+
+static void write_to_file(int ofd, void *buffer, int size)
+{
+	if (write(ofd, buffer, size) == size)
+		return;
+
+	fprintf(stderr, "%s: Failed to write to output file: %s\n",
+		prog_name, strerror(errno));
+	exit(EXIT_FAILURE);
+}
+
+/*
+ * The argv is expected to include one optional parameter and two filenames:
+ * [--vs] IN OUT
+ *
+ * --vs - turns on the variable size SPL mode
+ * IN  - the u-boot SPL binary, usually u-boot-spl.bin
+ * OUT - the prepared SPL blob, usually ${BOARD}-spl.bin
+ *
+ * This utility first reads the "u-boot-spl.bin" into a buffer. In case of
+ * fixed size SPL the buffer size is exactly CHECKSUM_OFFSET (such that
+ * smaller u-boot-spl.bin gets padded with 0xff bytes, the larger than limit
+ * u-boot-spl.bin causes an error). For variable size SPL the buffer size is
+ * eqaul to size of the IN file.
+ *
+ * Then it calculates checksum of the buffer by just summing up all bytes.
+ * Then
+ *
+ * - for fixed size SPL the buffer is written into the output file and the
+ *   checksum is appended to the file in little endian format, which results
+ *   in checksum added exactly at CHECKSUM_OFFSET.
+ *
+ * - for variable size SPL the checksum and file size are stored in the
+ *   var_size_header structure (again, in little endian format) and the
+ *   structure is written into the output file. Then the buffer is written
+ *   into the output file.
+ */
+int main(int argc, char **argv)
+{
+	unsigned char *buffer;
+	int i, ifd, ofd;
+	uint32_t checksum = 0;
+	off_t	len;
+	int	var_size_flag, read_size, count;
+	struct stat stat;
+	const int if_index = argc - 2; /* Input file name index in argv. */
+	const int of_index = argc - 1; /* Output file name index in argv. */
+
+	/* Strip path off the program name. */
+	prog_name = strrchr(argv[0], '/');
+	if (prog_name)
+		prog_name++;
+	else
+		prog_name = argv[0];
+
+	if ((argc < 3) ||
+	    (argc > 4) ||
+	    ((argc == 4) && strcmp(argv[1], "--vs"))) {
+		fprintf(stderr, "Usage: %s [--vs] <infile> <outfile>\n",
+			prog_name);
+		exit(EXIT_FAILURE);
+	}
+
+	/* four args mean variable size SPL wrapper is required */
+	var_size_flag = (argc == 4);
+
+	ifd = open(argv[if_index], O_RDONLY);
+	if (ifd < 0) {
+		fprintf(stderr, "%s: Can't open %s: %s\n",
+			prog_name, argv[if_index], strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	ofd = open(argv[of_index], O_WRONLY | O_CREAT | O_TRUNC, FILE_PERM);
+	if (ifd < 0) {
+		fprintf(stderr, "%s: Can't open %s: %s\n",
+			prog_name, argv[of_index], strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	if (fstat(ifd, &stat)) {
+		fprintf(stderr, "%s: Unable to get size of %s: %s\n",
+			prog_name, argv[if_index], strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	len = stat.st_size;
+
+	if (var_size_flag) {
+		read_size = len;
+		count = len;
+	} else {
+		if (len > CHECKSUM_OFFSET) {
+			fprintf(stderr,
+				"%s: %s is too big (exceeds %d bytes)\n",
+				prog_name, argv[if_index], CHECKSUM_OFFSET);
+			exit(EXIT_FAILURE);
+		}
+		count = CHECKSUM_OFFSET;
+		read_size = len;
+	}
+
+	buffer = malloc(count);
+	if (!buffer) {
+		fprintf(stderr,
+			"%s: Failed to allocate %d bytes to store %s\n",
+			prog_name, count, argv[if_index]);
+		exit(EXIT_FAILURE);
+	}
+
+	if (read(ifd, buffer, read_size) != read_size) {
+		fprintf(stderr, "%s: Can't read %s: %s\n",
+			prog_name, argv[if_index], strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	/* Pad if needed with 0xff to make flashing faster. */
+	if (read_size < count)
+		memset((char *)buffer + read_size, 0xff, count - read_size);
+
+	for (i = 0, checksum = 0; i < count; i++)
+		checksum += buffer[i];
+	checksum = cpu_to_le32(checksum);
+
+	if (var_size_flag) {
+		/* Prepare and write out the variable size SPL header. */
+		struct var_size_header vsh;
+		uint32_t spl_size;
+
+		memset(&vsh, 0, sizeof(vsh));
+		memcpy(&vsh.spl_checksum, &checksum, sizeof(checksum));
+
+		spl_size = cpu_to_le32(count + sizeof(struct var_size_header));
+		memcpy(&vsh.spl_size, &spl_size, sizeof(spl_size));
+		write_to_file(ofd, &vsh, sizeof(vsh));
+	}
+
+	write_to_file(ofd, buffer, count);
+
+	/* For fixed size SPL checksum is appended in the end. */
+	if (!var_size_flag)
+		write_to_file(ofd, &checksum, sizeof(checksum));
+
+	close(ifd);
+	close(ofd);
+	free(buffer);
+
+	return EXIT_SUCCESS;
+}