Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 122 insertions, 0 deletions

diff --git a/roms/u-boot/tools/prelink-riscv.c b/roms/u-boot/tools/prelink-riscv.c
new file mode 100644
index 000000000..b0467949e
--- /dev/null
+++ b/roms/u-boot/tools/prelink-riscv.c
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Andes Technology
+ * Chih-Mao Chen <cmchen@andestech.com>
+ *
+ * Statically process runtime relocations on RISC-V ELF images
+ * so that it can be directly executed when loaded at LMA
+ * without fixup. Both RV32 and RV64 are supported.
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <elf.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <compiler.h>
+
+#ifndef EM_RISCV
+#define EM_RISCV 243
+#endif
+
+#ifndef R_RISCV_32
+#define R_RISCV_32 1
+#endif
+
+#ifndef R_RISCV_64
+#define R_RISCV_64 2
+#endif
+
+#ifndef R_RISCV_RELATIVE
+#define R_RISCV_RELATIVE 3
+#endif
+
+const char *argv0;
+
+#define die(fmt, ...) \
+	do { \
+		fprintf(stderr, "%s: " fmt "\n", argv0, ## __VA_ARGS__); \
+		exit(EXIT_FAILURE); \
+	} while (0)
+
+#define PRELINK_BYTEORDER le
+#define PRELINK_INC_BITS 32
+#include "prelink-riscv.inc"
+#undef PRELINK_BYTEORDER
+#undef PRELINK_INC_BITS
+
+#define PRELINK_BYTEORDER le
+#define PRELINK_INC_BITS 64
+#include "prelink-riscv.inc"
+#undef PRELINK_BYTEORDER
+#undef PRELINK_INC_BITS
+
+#define PRELINK_BYTEORDER be
+#define PRELINK_INC_BITS 32
+#include "prelink-riscv.inc"
+#undef PRELINK_BYTEORDER
+#undef PRELINK_INC_BITS
+
+#define PRELINK_BYTEORDER be
+#define PRELINK_INC_BITS 64
+#include "prelink-riscv.inc"
+#undef PRELINK_BYTEORDER
+#undef PRELINK_INC_BITS
+
+int main(int argc, const char *const *argv)
+{
+	argv0 = argv[0];
+
+	if (argc < 2) {
+		fprintf(stderr, "Usage: %s <u-boot>\n", argv0);
+		exit(EXIT_FAILURE);
+	}
+
+	int fd = open(argv[1], O_RDWR, 0);
+
+	if (fd < 0)
+		die("Cannot open %s: %s", argv[1], strerror(errno));
+
+	struct stat st;
+
+	if (fstat(fd, &st) < 0)
+		die("Cannot stat %s: %s", argv[1], strerror(errno));
+
+	void *data =
+		mmap(0, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+
+	if (data == MAP_FAILED)
+		die("Cannot mmap %s: %s", argv[1], strerror(errno));
+
+	close(fd);
+
+	unsigned char *e_ident = (unsigned char *)data;
+
+	if (memcmp(e_ident, ELFMAG, SELFMAG) != 0)
+		die("Invalid ELF file %s", argv[1]);
+
+	bool is64 = e_ident[EI_CLASS] == ELFCLASS64;
+	bool isbe = e_ident[EI_DATA] == ELFDATA2MSB;
+
+	if (is64) {
+		if (isbe)
+			prelink_be64(data);
+		else
+			prelink_le64(data);
+	} else {
+		if (isbe)
+			prelink_be32(data);
+		else
+			prelink_le32(data);
+	}
+
+	return 0;
+}