Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 192 insertions, 0 deletions

diff --git a/roms/u-boot/env/ext4.c b/roms/u-boot/env/ext4.c
new file mode 100644
index 000000000..9f65afb8a
--- /dev/null
+++ b/roms/u-boot/env/ext4.c
@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (c) Copyright 2016 by VRT Technology
+ *
+ * Author:
+ *  Stuart Longland <stuartl@vrt.com.au>
+ *
+ * Based on FAT environment driver
+ * (c) Copyright 2011 by Tigris Elektronik GmbH
+ *
+ * Author:
+ *  Maximilian Schwerin <mvs@tigris.de>
+ *
+ * and EXT4 filesystem implementation
+ * (C) Copyright 2011 - 2012 Samsung Electronics
+ * EXT4 filesystem implementation in Uboot by
+ * Uma Shankar <uma.shankar@samsung.com>
+ * Manjunatha C Achar <a.manjunatha@samsung.com>
+ */
+
+#include <common.h>
+#include <part.h>
+
+#include <command.h>
+#include <env.h>
+#include <env_internal.h>
+#include <linux/stddef.h>
+#include <malloc.h>
+#include <memalign.h>
+#include <search.h>
+#include <errno.h>
+#include <ext4fs.h>
+#include <mmc.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+__weak const char *env_ext4_get_intf(void)
+{
+	return (const char *)CONFIG_ENV_EXT4_INTERFACE;
+}
+
+__weak const char *env_ext4_get_dev_part(void)
+{
+#ifdef CONFIG_MMC
+	static char *part_str;
+
+	if (!part_str) {
+		part_str = CONFIG_ENV_EXT4_DEVICE_AND_PART;
+		if (!strcmp(CONFIG_ENV_EXT4_INTERFACE, "mmc") && part_str[0] == ':') {
+			part_str = "0" CONFIG_ENV_EXT4_DEVICE_AND_PART;
+			part_str[0] += mmc_get_env_dev();
+		}
+	}
+
+	return part_str;
+#else
+	return (const char *)CONFIG_ENV_EXT4_DEVICE_AND_PART;
+#endif
+}
+
+static int env_ext4_save_buffer(env_t *env_new)
+{
+	struct blk_desc *dev_desc = NULL;
+	struct disk_partition info;
+	int dev, part;
+	int err;
+	const char *ifname = env_ext4_get_intf();
+	const char *dev_and_part = env_ext4_get_dev_part();
+
+	part = blk_get_device_part_str(ifname, dev_and_part,
+				       &dev_desc, &info, 1);
+	if (part < 0)
+		return 1;
+
+	dev = dev_desc->devnum;
+	ext4fs_set_blk_dev(dev_desc, &info);
+
+	if (!ext4fs_mount(info.size)) {
+		printf("\n** Unable to use %s %s for saveenv **\n",
+		       ifname, dev_and_part);
+		return 1;
+	}
+
+	err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)env_new,
+			   sizeof(env_t), FILETYPE_REG);
+	ext4fs_close();
+
+	if (err == -1) {
+		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
+			CONFIG_ENV_EXT4_FILE, ifname, dev, part);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int env_ext4_save(void)
+{
+	env_t env_new;
+	int err;
+
+	err = env_export(&env_new);
+	if (err)
+		return err;
+
+	err = env_ext4_save_buffer(&env_new);
+	if (err)
+		return err;
+
+	gd->env_valid = ENV_VALID;
+	puts("done\n");
+
+	return 0;
+}
+
+static int env_ext4_erase(void)
+{
+	env_t env_new;
+	int err;
+
+	memset(&env_new, 0, sizeof(env_t));
+
+	err = env_ext4_save_buffer(&env_new);
+	if (err)
+		return err;
+
+	gd->env_valid = ENV_INVALID;
+	puts("done\n");
+
+	return 0;
+}
+
+static int env_ext4_load(void)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
+	struct blk_desc *dev_desc = NULL;
+	struct disk_partition info;
+	int dev, part;
+	int err;
+	loff_t off;
+	const char *ifname = env_ext4_get_intf();
+	const char *dev_and_part = env_ext4_get_dev_part();
+
+#ifdef CONFIG_MMC
+	if (!strcmp(ifname, "mmc"))
+		mmc_initialize(NULL);
+#endif
+
+	part = blk_get_device_part_str(ifname, dev_and_part,
+				       &dev_desc, &info, 1);
+	if (part < 0)
+		goto err_env_relocate;
+
+	dev = dev_desc->devnum;
+	ext4fs_set_blk_dev(dev_desc, &info);
+
+	if (!ext4fs_mount(info.size)) {
+		printf("\n** Unable to use %s %s for loading the env **\n",
+		       ifname, dev_and_part);
+		goto err_env_relocate;
+	}
+
+	err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
+			     &off);
+	ext4fs_close();
+
+	if (err == -1) {
+		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
+			CONFIG_ENV_EXT4_FILE, ifname, dev, part);
+		goto err_env_relocate;
+	}
+
+	err = env_import(buf, 1, H_EXTERNAL);
+	if (!err)
+		gd->env_valid = ENV_VALID;
+
+	return err;
+
+err_env_relocate:
+	env_set_default(NULL, 0);
+
+	return -EIO;
+}
+
+U_BOOT_ENV_LOCATION(ext4) = {
+	.location	= ENVL_EXT4,
+	ENV_NAME("EXT4")
+	.load		= env_ext4_load,
+	.save		= ENV_SAVE_PTR(env_ext4_save),
+	.erase		= ENV_ERASE_PTR(env_ext4_erase),
+};