GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+/* SPDX-License-Identifier: GPL 2.0+ OR BSD-3-Clause */
+/*
+ * The parts taken from the kernel implementation are:
+ *
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * UBISPL specific defines:
+ *
+ * Copyright (c) Thomas Gleixner <tglx@linutronix.de>
+ */
+
+/*
+ * Contains various defines copy&pasted from ubi.h and ubi-user.h to make
+ * the upstream fastboot code happy.
+ */
+#ifndef __UBOOT_UBI_WRAPPER_H
+#define __UBOOT_UBI_WRAPPER_H
+
+/*
+ * Error codes returned by the I/O sub-system.
+ *
+ * UBI_IO_FF: the read region of flash contains only 0xFFs
+ * UBI_IO_FF_BITFLIPS: the same as %UBI_IO_FF, but also also there was a data
+ *                     integrity error reported by the MTD driver
+ *                     (uncorrectable ECC error in case of NAND)
+ * UBI_IO_BAD_HDR: the EC or VID header is corrupted (bad magic or CRC)
+ * UBI_IO_BAD_HDR_EBADMSG: the same as %UBI_IO_BAD_HDR, but also there was a
+ *                         data integrity error reported by the MTD driver
+ *                         (uncorrectable ECC error in case of NAND)
+ * UBI_IO_BITFLIPS: bit-flips were detected and corrected
+ *
+ * UBI_FASTMAP_ANCHOR:  u-boot SPL add on to tell the caller that the fastmap
+ *			anchor block has been found
+ *
+ * Note, it is probably better to have bit-flip and ebadmsg as flags which can
+ * be or'ed with other error code. But this is a big change because there are
+ * may callers, so it does not worth the risk of introducing a bug
+ */
+enum {
+	UBI_IO_FF = 1,
+	UBI_IO_FF_BITFLIPS,
+	UBI_IO_BAD_HDR,
+	UBI_IO_BAD_HDR_EBADMSG,
+	UBI_IO_BITFLIPS,
+	UBI_FASTMAP_ANCHOR,
+};
+
+/*
+ * UBI volume type constants.
+ *
+ * @UBI_DYNAMIC_VOLUME: dynamic volume
+ * @UBI_STATIC_VOLUME:  static volume
+ */
+enum {
+	UBI_DYNAMIC_VOLUME = 3,
+	UBI_STATIC_VOLUME  = 4,
+};
+
+/*
+ * Return codes of the fastmap sub-system
+ *
+ * UBI_NO_FASTMAP: No fastmap super block was found
+ * UBI_BAD_FASTMAP: A fastmap was found but it's unusable
+ */
+enum {
+	UBI_NO_FASTMAP = 1,
+	UBI_BAD_FASTMAP,
+};
+
+/**
+ * struct ubi_fastmap_layout - in-memory fastmap data structure.
+ * @e: PEBs used by the current fastmap
+ * @to_be_tortured: if non-zero tortured this PEB
+ * @used_blocks: number of used PEBs
+ * @max_pool_size: maximal size of the user pool
+ * @max_wl_pool_size: maximal size of the pool used by the WL sub-system
+ */
+struct ubi_fastmap_layout {
+	struct ubi_wl_entry *e[UBI_FM_MAX_BLOCKS];
+	int to_be_tortured[UBI_FM_MAX_BLOCKS];
+	int used_blocks;
+	int max_pool_size;
+	int max_wl_pool_size;
+};
+
+/**
+ * struct ubi_fm_pool - in-memory fastmap pool
+ * @pebs: PEBs in this pool
+ * @used: number of used PEBs
+ * @size: total number of PEBs in this pool
+ * @max_size: maximal size of the pool
+ *
+ * A pool gets filled with up to max_size.
+ * If all PEBs within the pool are used a new fastmap will be written
+ * to the flash and the pool gets refilled with empty PEBs.
+ *
+ */
+struct ubi_fm_pool {
+	int pebs[UBI_FM_MAX_POOL_SIZE];
+	int used;
+	int size;
+	int max_size;
+};
+
+#endif