avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/fs/fs.c

@@ -0,0 +1,538 @@
+/*
+ * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <config.h>
+#include <errno.h>
+#include <common.h>
+#include <mapmem.h>
+#include <part.h>
+#include <ext4fs.h>
+#include <fat.h>
+#include <fs.h>
+#include <sandboxfs.h>
+#include <ubifs_uboot.h>
+#include <asm/io.h>
+#include <div64.h>
+#include <linux/math64.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct blk_desc *fs_dev_desc;
+static disk_partition_t fs_partition;
+static int fs_type = FS_TYPE_ANY;
+
+static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
+				      disk_partition_t *fs_partition)
+{
+	printf("** Unrecognized filesystem type **\n");
+	return -1;
+}
+
+static inline int fs_ls_unsupported(const char *dirname)
+{
+	return -1;
+}
+
+static inline int fs_exists_unsupported(const char *filename)
+{
+	return 0;
+}
+
+static inline int fs_size_unsupported(const char *filename, loff_t *size)
+{
+	return -1;
+}
+
+static inline int fs_read_unsupported(const char *filename, void *buf,
+				      loff_t offset, loff_t len,
+				      loff_t *actread)
+{
+	return -1;
+}
+
+static inline int fs_write_unsupported(const char *filename, void *buf,
+				      loff_t offset, loff_t len,
+				      loff_t *actwrite)
+{
+	return -1;
+}
+
+static inline void fs_close_unsupported(void)
+{
+}
+
+static inline int fs_uuid_unsupported(char *uuid_str)
+{
+	return -1;
+}
+
+struct fstype_info {
+	int fstype;
+	char *name;
+	/*
+	 * Is it legal to pass NULL as .probe()'s  fs_dev_desc parameter? This
+	 * should be false in most cases. For "virtual" filesystems which
+	 * aren't based on a U-Boot block device (e.g. sandbox), this can be
+	 * set to true. This should also be true for the dumm entry at the end
+	 * of fstypes[], since that is essentially a "virtual" (non-existent)
+	 * filesystem.
+	 */
+	bool null_dev_desc_ok;
+	int (*probe)(struct blk_desc *fs_dev_desc,
+		     disk_partition_t *fs_partition);
+	int (*ls)(const char *dirname);
+	int (*exists)(const char *filename);
+	int (*size)(const char *filename, loff_t *size);
+	int (*read)(const char *filename, void *buf, loff_t offset,
+		    loff_t len, loff_t *actread);
+	int (*write)(const char *filename, void *buf, loff_t offset,
+		     loff_t len, loff_t *actwrite);
+	void (*close)(void);
+	int (*uuid)(char *uuid_str);
+};
+
+static struct fstype_info fstypes[] = {
+#ifdef CONFIG_FS_FAT
+	{
+		.fstype = FS_TYPE_FAT,
+		.name = "fat",
+		.null_dev_desc_ok = false,
+		.probe = fat_set_blk_dev,
+		.close = fat_close,
+		.ls = file_fat_ls,
+		.exists = fat_exists,
+		.size = fat_size,
+		.read = fat_read_file,
+#ifdef CONFIG_FAT_WRITE
+		.write = file_fat_write,
+#else
+		.write = fs_write_unsupported,
+#endif
+		.uuid = fs_uuid_unsupported,
+	},
+#endif
+#ifdef CONFIG_FS_EXT4
+	{
+		.fstype = FS_TYPE_EXT,
+		.name = "ext4",
+		.null_dev_desc_ok = false,
+		.probe = ext4fs_probe,
+		.close = ext4fs_close,
+		.ls = ext4fs_ls,
+		.exists = ext4fs_exists,
+		.size = ext4fs_size,
+		.read = ext4_read_file,
+#ifdef CONFIG_CMD_EXT4_WRITE
+		.write = ext4_write_file,
+#else
+		.write = fs_write_unsupported,
+#endif
+		.uuid = ext4fs_uuid,
+	},
+#endif
+#ifdef CONFIG_SANDBOX
+	{
+		.fstype = FS_TYPE_SANDBOX,
+		.name = "sandbox",
+		.null_dev_desc_ok = true,
+		.probe = sandbox_fs_set_blk_dev,
+		.close = sandbox_fs_close,
+		.ls = sandbox_fs_ls,
+		.exists = sandbox_fs_exists,
+		.size = sandbox_fs_size,
+		.read = fs_read_sandbox,
+		.write = fs_write_sandbox,
+		.uuid = fs_uuid_unsupported,
+	},
+#endif
+#ifdef CONFIG_CMD_UBIFS
+	{
+		.fstype = FS_TYPE_UBIFS,
+		.name = "ubifs",
+		.null_dev_desc_ok = true,
+		.probe = ubifs_set_blk_dev,
+		.close = ubifs_close,
+		.ls = ubifs_ls,
+		.exists = ubifs_exists,
+		.size = ubifs_size,
+		.read = ubifs_read,
+		.write = fs_write_unsupported,
+		.uuid = fs_uuid_unsupported,
+	},
+#endif
+	{
+		.fstype = FS_TYPE_ANY,
+		.name = "unsupported",
+		.null_dev_desc_ok = true,
+		.probe = fs_probe_unsupported,
+		.close = fs_close_unsupported,
+		.ls = fs_ls_unsupported,
+		.exists = fs_exists_unsupported,
+		.size = fs_size_unsupported,
+		.read = fs_read_unsupported,
+		.write = fs_write_unsupported,
+		.uuid = fs_uuid_unsupported,
+	},
+};
+
+static struct fstype_info *fs_get_info(int fstype)
+{
+	struct fstype_info *info;
+	int i;
+
+	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
+		if (fstype == info->fstype)
+			return info;
+	}
+
+	/* Return the 'unsupported' sentinel */
+	return info;
+}
+
+int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
+{
+	struct fstype_info *info;
+	int part, i;
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+	static int relocated;
+
+	if (!relocated) {
+		for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes);
+				i++, info++) {
+			info->name += gd->reloc_off;
+			info->probe += gd->reloc_off;
+			info->close += gd->reloc_off;
+			info->ls += gd->reloc_off;
+			info->read += gd->reloc_off;
+			info->write += gd->reloc_off;
+		}
+		relocated = 1;
+	}
+#endif
+
+	part = blk_get_device_part_str(ifname, dev_part_str, &fs_dev_desc,
+					&fs_partition, 1);
+	if (part < 0)
+		return -1;
+
+	for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
+		if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
+				fstype != info->fstype)
+			continue;
+
+		if (!fs_dev_desc && !info->null_dev_desc_ok)
+			continue;
+
+		if (!info->probe(fs_dev_desc, &fs_partition)) {
+			fs_type = info->fstype;
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+static void fs_close(void)
+{
+	struct fstype_info *info = fs_get_info(fs_type);
+
+	info->close();
+
+	fs_type = FS_TYPE_ANY;
+}
+
+int fs_uuid(char *uuid_str)
+{
+	struct fstype_info *info = fs_get_info(fs_type);
+
+	return info->uuid(uuid_str);
+}
+
+int fs_ls(const char *dirname)
+{
+	int ret;
+
+	struct fstype_info *info = fs_get_info(fs_type);
+
+	ret = info->ls(dirname);
+
+	fs_type = FS_TYPE_ANY;
+	fs_close();
+
+	return ret;
+}
+
+int fs_exists(const char *filename)
+{
+	int ret;
+
+	struct fstype_info *info = fs_get_info(fs_type);
+
+	ret = info->exists(filename);
+
+	fs_close();
+
+	return ret;
+}
+
+int fs_size(const char *filename, loff_t *size)
+{
+	int ret;
+
+	struct fstype_info *info = fs_get_info(fs_type);
+
+	ret = info->size(filename, size);
+
+	fs_close();
+
+	return ret;
+}
+
+int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
+	    loff_t *actread)
+{
+	struct fstype_info *info = fs_get_info(fs_type);
+	void *buf;
+	int ret;
+
+	/*
+	 * We don't actually know how many bytes are being read, since len==0
+	 * means read the whole file.
+	 */
+	buf = map_sysmem(addr, len);
+	ret = info->read(filename, buf, offset, len, actread);
+	unmap_sysmem(buf);
+
+	/* If we requested a specific number of bytes, check we got it */
+	if (ret == 0 && len && *actread != len)
+		printf("** %s shorter than offset + len **\n", filename);
+	fs_close();
+
+	return ret;
+}
+
+int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
+	     loff_t *actwrite)
+{
+	struct fstype_info *info = fs_get_info(fs_type);
+	void *buf;
+	int ret;
+
+	buf = map_sysmem(addr, len);
+	ret = info->write(filename, buf, offset, len, actwrite);
+	unmap_sysmem(buf);
+
+	if (ret < 0 && len != *actwrite) {
+		printf("** Unable to write file %s **\n", filename);
+		ret = -1;
+	}
+	fs_close();
+
+	return ret;
+}
+
+int do_size(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+		int fstype)
+{
+	loff_t size;
+
+	if (argc != 4)
+		return CMD_RET_USAGE;
+
+	if (fs_set_blk_dev(argv[1], argv[2], fstype))
+		return 1;
+
+	if (fs_size(argv[3], &size) < 0)
+		return CMD_RET_FAILURE;
+
+	setenv_hex("filesize", size);
+
+	return 0;
+}
+
+int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+		int fstype)
+{
+	unsigned long addr;
+	const char *addr_str;
+	const char *filename;
+	loff_t bytes;
+	loff_t pos;
+	loff_t len_read;
+	int ret;
+	unsigned long time;
+	char *ep;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+	if (argc > 7)
+		return CMD_RET_USAGE;
+
+	if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
+		return 1;
+
+	if (argc >= 4) {
+		addr = simple_strtoul(argv[3], &ep, 16);
+		if (ep == argv[3] || *ep != '\0')
+			return CMD_RET_USAGE;
+	} else {
+		addr_str = getenv("loadaddr");
+		if (addr_str != NULL)
+			addr = simple_strtoul(addr_str, NULL, 16);
+		else
+			addr = CONFIG_SYS_LOAD_ADDR;
+	}
+	if (argc >= 5) {
+		filename = argv[4];
+	} else {
+		filename = getenv("bootfile");
+		if (!filename) {
+			puts("** No boot file defined **\n");
+			return 1;
+		}
+	}
+	if (argc >= 6)
+		bytes = simple_strtoul(argv[5], NULL, 16);
+	else
+		bytes = 0;
+	if (argc >= 7)
+		pos = simple_strtoul(argv[6], NULL, 16);
+	else
+		pos = 0;
+
+	time = get_timer(0);
+	ret = fs_read(filename, addr, pos, bytes, &len_read);
+	time = get_timer(time);
+	if (ret < 0)
+		return 1;
+
+	printf("%llu bytes read in %lu ms", len_read, time);
+	if (time > 0) {
+		puts(" (");
+		print_size(div_u64(len_read, time) * 1000, "/s");
+		puts(")");
+	}
+	puts("\n");
+
+	setenv_hex("fileaddr", addr);
+	setenv_hex("filesize", len_read);
+
+	return 0;
+}
+
+int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+	int fstype)
+{
+	if (argc < 2)
+		return CMD_RET_USAGE;
+	if (argc > 4)
+		return CMD_RET_USAGE;
+
+	if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
+		return 1;
+
+	if (fs_ls(argc >= 4 ? argv[3] : "/"))
+		return 1;
+
+	return 0;
+}
+
+int file_exists(const char *dev_type, const char *dev_part, const char *file,
+		int fstype)
+{
+	if (fs_set_blk_dev(dev_type, dev_part, fstype))
+		return 0;
+
+	return fs_exists(file);
+}
+
+int do_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+		int fstype)
+{
+	unsigned long addr;
+	const char *filename;
+	loff_t bytes;
+	loff_t pos;
+	loff_t len;
+	int ret;
+	unsigned long time;
+
+	if (argc < 6 || argc > 7)
+		return CMD_RET_USAGE;
+
+	if (fs_set_blk_dev(argv[1], argv[2], fstype))
+		return 1;
+
+	addr = simple_strtoul(argv[3], NULL, 16);
+	filename = argv[4];
+	bytes = simple_strtoul(argv[5], NULL, 16);
+	if (argc >= 7)
+		pos = simple_strtoul(argv[6], NULL, 16);
+	else
+		pos = 0;
+
+	time = get_timer(0);
+	ret = fs_write(filename, addr, pos, bytes, &len);
+	time = get_timer(time);
+	if (ret < 0)
+		return 1;
+
+	printf("%llu bytes written in %lu ms", len, time);
+	if (time > 0) {
+		puts(" (");
+		print_size(div_u64(len, time) * 1000, "/s");
+		puts(")");
+	}
+	puts("\n");
+
+	return 0;
+}
+
+int do_fs_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+		int fstype)
+{
+	int ret;
+	char uuid[37];
+	memset(uuid, 0, sizeof(uuid));
+
+	if (argc < 3 || argc > 4)
+		return CMD_RET_USAGE;
+
+	if (fs_set_blk_dev(argv[1], argv[2], fstype))
+		return 1;
+
+	ret = fs_uuid(uuid);
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	if (argc == 4)
+		setenv(argv[3], uuid);
+	else
+		printf("%s\n", uuid);
+
+	return CMD_RET_SUCCESS;
+}
+
+int do_fs_type(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct fstype_info *info;
+
+	if (argc < 3 || argc > 4)
+		return CMD_RET_USAGE;
+
+	if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
+		return 1;
+
+	info = fs_get_info(fs_type);
+
+	if (argc == 4)
+		setenv(argv[3], info->name);
+	else
+		printf("%s\n", info->name);
+
+	return CMD_RET_SUCCESS;
+}
+