1 files changed, 137 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/common/env_fat.c b/qemu/roms/u-boot/common/env_fat.c
new file mode 100644
index 000000000..aad0487c3
--- /dev/null
+++ b/qemu/roms/u-boot/common/env_fat.c
@@ -0,0 +1,137 @@
+/*
+ * (c) Copyright 2011 by Tigris Elektronik GmbH
+ *
+ * Author:
+ *  Maximilian Schwerin <mvs@tigris.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <malloc.h>
+#include <search.h>
+#include <errno.h>
+#include <fat.h>
+#include <mmc.h>
+
+char *env_name_spec = "FAT";
+
+env_t *env_ptr;
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int env_init(void)
+{
+	/* use default */
+	gd->env_addr = (ulong)&default_environment[0];
+	gd->env_valid = 1;
+
+	return 0;
+}
+
+#ifdef CONFIG_CMD_SAVEENV
+int saveenv(void)
+{
+	env_t	env_new;
+	block_dev_desc_t *dev_desc = NULL;
+	int dev = FAT_ENV_DEVICE;
+	int part = FAT_ENV_PART;
+	int err;
+
+	err = env_export(&env_new);
+	if (err)
+		return err;
+
+#ifdef CONFIG_MMC
+	if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
+		struct mmc *mmc = find_mmc_device(dev);
+
+		if (!mmc) {
+			printf("no mmc device at slot %x\n", dev);
+			return 1;
+		}
+
+		mmc->has_init = 0;
+		mmc_init(mmc);
+	}
+#endif /* CONFIG_MMC */
+
+	dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
+	if (dev_desc == NULL) {
+		printf("Failed to find %s%d\n",
+			FAT_ENV_INTERFACE, dev);
+		return 1;
+	}
+
+	err = fat_register_device(dev_desc, part);
+	if (err) {
+		printf("Failed to register %s%d:%d\n",
+			FAT_ENV_INTERFACE, dev, part);
+		return 1;
+	}
+
+	err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t));
+	if (err == -1) {
+		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
+			FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
+		return 1;
+	}
+
+	puts("done\n");
+	return 0;
+}
+#endif /* CONFIG_CMD_SAVEENV */
+
+void env_relocate_spec(void)
+{
+	char buf[CONFIG_ENV_SIZE];
+	block_dev_desc_t *dev_desc = NULL;
+	int dev = FAT_ENV_DEVICE;
+	int part = FAT_ENV_PART;
+	int err;
+
+#ifdef CONFIG_MMC
+	if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
+		struct mmc *mmc = find_mmc_device(dev);
+
+		if (!mmc) {
+			printf("no mmc device at slot %x\n", dev);
+			set_default_env(NULL);
+			return;
+		}
+
+		mmc->has_init = 0;
+		mmc_init(mmc);
+	}
+#endif /* CONFIG_MMC */
+
+	dev_desc = get_dev(FAT_ENV_INTERFACE, dev);
+	if (dev_desc == NULL) {
+		printf("Failed to find %s%d\n",
+			FAT_ENV_INTERFACE, dev);
+		set_default_env(NULL);
+		return;
+	}
+
+	err = fat_register_device(dev_desc, part);
+	if (err) {
+		printf("Failed to register %s%d:%d\n",
+			FAT_ENV_INTERFACE, dev, part);
+		set_default_env(NULL);
+		return;
+	}
+
+	err = file_fat_read(FAT_ENV_FILE, (uchar *)&buf, CONFIG_ENV_SIZE);
+	if (err == -1) {
+		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
+			FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
+		set_default_env(NULL);
+		return;
+	}
+
+	env_import(buf, 1);
+}