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![Simon Glass](/assets/img/avatar_default.png)
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
1140 lines
27 KiB
C
1140 lines
27 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (c) Thomas Gleixner <tglx@linutronix.de>
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*
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* The parts taken from the kernel implementation are:
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*
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* Copyright (c) International Business Machines Corp., 2006
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*/
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#include <common.h>
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#include <errno.h>
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#include <linux/bug.h>
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#include <u-boot/crc.h>
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#include <ubispl.h>
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#include <linux/bitops.h>
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#include <linux/crc32.h>
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#include "ubispl.h"
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/**
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* ubi_calc_fm_size - calculates the fastmap size in bytes for an UBI device.
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* @ubi: UBI device description object
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*/
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static size_t ubi_calc_fm_size(struct ubi_scan_info *ubi)
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{
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size_t size;
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size = sizeof(struct ubi_fm_sb) +
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sizeof(struct ubi_fm_hdr) +
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sizeof(struct ubi_fm_scan_pool) +
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sizeof(struct ubi_fm_scan_pool) +
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(ubi->peb_count * sizeof(struct ubi_fm_ec)) +
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(sizeof(struct ubi_fm_eba) +
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(ubi->peb_count * sizeof(__be32))) +
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sizeof(struct ubi_fm_volhdr) * UBI_MAX_VOLUMES;
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return roundup(size, ubi->leb_size);
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}
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static int ubi_io_read(struct ubi_scan_info *ubi, void *buf, int pnum,
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unsigned long from, unsigned long len)
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{
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return ubi->read(pnum + ubi->peb_offset, from, len, buf);
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}
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static int ubi_io_is_bad(struct ubi_scan_info *ubi, int peb)
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{
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return peb >= ubi->peb_count || peb < 0;
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}
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#ifdef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
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/**
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* ubi_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
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* @r: the object to dump
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* @idx: volume table index
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*/
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void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
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{
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int name_len = be16_to_cpu(r->name_len);
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ubi_dbg("Volume table record %d dump: size: %d",
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idx, sizeof(struct ubi_vtbl_record));
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ubi_dbg("\treserved_pebs %d", be32_to_cpu(r->reserved_pebs));
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ubi_dbg("\talignment %d", be32_to_cpu(r->alignment));
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ubi_dbg("\tdata_pad %d", be32_to_cpu(r->data_pad));
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ubi_dbg("\tvol_type %d", (int)r->vol_type);
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ubi_dbg("\tupd_marker %d", (int)r->upd_marker);
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ubi_dbg("\tname_len %d", name_len);
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if (r->name[0] == '\0') {
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ubi_dbg("\tname NULL");
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return;
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}
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if (name_len <= UBI_VOL_NAME_MAX &&
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strnlen(&r->name[0], name_len + 1) == name_len) {
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ubi_dbg("\tname %s", &r->name[0]);
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} else {
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ubi_dbg("\t1st 5 characters of name: %c%c%c%c%c",
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r->name[0], r->name[1], r->name[2], r->name[3],
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r->name[4]);
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}
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ubi_dbg("\tcrc %#08x", be32_to_cpu(r->crc));
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}
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/* Empty volume table record */
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static struct ubi_vtbl_record empty_vtbl_record;
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/**
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* vtbl_check - check if volume table is not corrupted and sensible.
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* @ubi: UBI device description object
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* @vtbl: volume table
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*
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* This function returns zero if @vtbl is all right, %1 if CRC is incorrect,
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* and %-EINVAL if it contains inconsistent data.
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*/
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static int vtbl_check(struct ubi_scan_info *ubi,
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struct ubi_vtbl_record *vtbl)
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{
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int i, n, reserved_pebs, alignment, data_pad, vol_type, name_len;
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int upd_marker, err;
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uint32_t crc;
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const char *name;
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for (i = 0; i < UBI_SPL_VOL_IDS; i++) {
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reserved_pebs = be32_to_cpu(vtbl[i].reserved_pebs);
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alignment = be32_to_cpu(vtbl[i].alignment);
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data_pad = be32_to_cpu(vtbl[i].data_pad);
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upd_marker = vtbl[i].upd_marker;
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vol_type = vtbl[i].vol_type;
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name_len = be16_to_cpu(vtbl[i].name_len);
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name = &vtbl[i].name[0];
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crc = crc32(UBI_CRC32_INIT, &vtbl[i], UBI_VTBL_RECORD_SIZE_CRC);
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if (be32_to_cpu(vtbl[i].crc) != crc) {
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ubi_err("bad CRC at record %u: %#08x, not %#08x",
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i, crc, be32_to_cpu(vtbl[i].crc));
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ubi_dump_vtbl_record(&vtbl[i], i);
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return 1;
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}
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if (reserved_pebs == 0) {
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if (memcmp(&vtbl[i], &empty_vtbl_record,
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UBI_VTBL_RECORD_SIZE)) {
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err = 2;
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goto bad;
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}
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continue;
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}
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if (reserved_pebs < 0 || alignment < 0 || data_pad < 0 ||
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name_len < 0) {
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err = 3;
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goto bad;
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}
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if (alignment > ubi->leb_size || alignment == 0) {
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err = 4;
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goto bad;
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}
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n = alignment & (CONFIG_SPL_UBI_VID_OFFSET - 1);
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if (alignment != 1 && n) {
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err = 5;
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goto bad;
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}
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n = ubi->leb_size % alignment;
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if (data_pad != n) {
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ubi_err("bad data_pad, has to be %d", n);
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err = 6;
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goto bad;
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}
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if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) {
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err = 7;
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goto bad;
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}
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if (upd_marker != 0 && upd_marker != 1) {
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err = 8;
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goto bad;
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}
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if (name_len > UBI_VOL_NAME_MAX) {
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err = 10;
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goto bad;
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}
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if (name[0] == '\0') {
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err = 11;
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goto bad;
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}
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if (name_len != strnlen(name, name_len + 1)) {
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err = 12;
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goto bad;
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}
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ubi_dump_vtbl_record(&vtbl[i], i);
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}
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/* Checks that all names are unique */
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for (i = 0; i < UBI_SPL_VOL_IDS - 1; i++) {
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for (n = i + 1; n < UBI_SPL_VOL_IDS; n++) {
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int len1 = be16_to_cpu(vtbl[i].name_len);
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int len2 = be16_to_cpu(vtbl[n].name_len);
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if (len1 > 0 && len1 == len2 &&
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!strncmp(vtbl[i].name, vtbl[n].name, len1)) {
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ubi_err("volumes %d and %d have the same name \"%s\"",
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i, n, vtbl[i].name);
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ubi_dump_vtbl_record(&vtbl[i], i);
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ubi_dump_vtbl_record(&vtbl[n], n);
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return -EINVAL;
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}
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}
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}
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return 0;
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bad:
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ubi_err("volume table check failed: record %d, error %d", i, err);
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ubi_dump_vtbl_record(&vtbl[i], i);
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return -EINVAL;
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}
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static int ubi_read_volume_table(struct ubi_scan_info *ubi, u32 pnum)
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{
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int err = -EINVAL;
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empty_vtbl_record.crc = cpu_to_be32(0xf116c36b);
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err = ubi_io_read(ubi, &ubi->vtbl, pnum, ubi->leb_start,
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sizeof(struct ubi_vtbl_record) * UBI_SPL_VOL_IDS);
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if (err && err != UBI_IO_BITFLIPS) {
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ubi_err("unable to read volume table");
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goto out;
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}
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if (!vtbl_check(ubi, ubi->vtbl)) {
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ubi->vtbl_valid = 1;
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err = 0;
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}
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out:
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return err;
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}
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#endif /* CONFIG_SPL_UBI_LOAD_BY_VOLNAME */
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static int ubi_io_read_vid_hdr(struct ubi_scan_info *ubi, int pnum,
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struct ubi_vid_hdr *vh, int unused)
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{
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u32 magic;
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int res;
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/* No point in rescanning a corrupt block */
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if (test_bit(pnum, ubi->corrupt))
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return UBI_IO_BAD_HDR;
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/*
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* If the block has been scanned already, no need to rescan
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*/
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if (test_and_set_bit(pnum, ubi->scanned))
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return 0;
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res = ubi_io_read(ubi, vh, pnum, ubi->vid_offset, sizeof(*vh));
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/*
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* Bad block, unrecoverable ECC error, skip the block
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*/
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if (res) {
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ubi_dbg("Skipping bad or unreadable block %d", pnum);
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vh->magic = 0;
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generic_set_bit(pnum, ubi->corrupt);
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return res;
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}
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/* Magic number available ? */
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magic = be32_to_cpu(vh->magic);
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if (magic != UBI_VID_HDR_MAGIC) {
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generic_set_bit(pnum, ubi->corrupt);
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if (magic == 0xffffffff)
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return UBI_IO_FF;
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ubi_msg("Bad magic in block 0%d %08x", pnum, magic);
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return UBI_IO_BAD_HDR;
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}
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/* Header CRC correct ? */
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if (crc32(UBI_CRC32_INIT, vh, UBI_VID_HDR_SIZE_CRC) !=
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be32_to_cpu(vh->hdr_crc)) {
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ubi_msg("Bad CRC in block 0%d", pnum);
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generic_set_bit(pnum, ubi->corrupt);
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return UBI_IO_BAD_HDR;
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}
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ubi_dbg("RV: pnum: %i sqnum %llu", pnum, be64_to_cpu(vh->sqnum));
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return 0;
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}
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static int ubi_rescan_fm_vid_hdr(struct ubi_scan_info *ubi,
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struct ubi_vid_hdr *vh,
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u32 fm_pnum, u32 fm_vol_id, u32 fm_lnum)
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{
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int res;
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if (ubi_io_is_bad(ubi, fm_pnum))
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return -EINVAL;
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res = ubi_io_read_vid_hdr(ubi, fm_pnum, vh, 0);
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if (!res) {
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/* Check volume id, volume type and lnum */
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if (be32_to_cpu(vh->vol_id) == fm_vol_id &&
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vh->vol_type == UBI_VID_STATIC &&
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be32_to_cpu(vh->lnum) == fm_lnum)
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return 0;
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ubi_dbg("RS: PEB %u vol: %u : %u typ %u lnum %u %u",
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fm_pnum, fm_vol_id, vh->vol_type,
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be32_to_cpu(vh->vol_id),
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fm_lnum, be32_to_cpu(vh->lnum));
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}
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return res;
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}
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/* Insert the logic block into the volume info */
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static int ubi_add_peb_to_vol(struct ubi_scan_info *ubi,
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struct ubi_vid_hdr *vh, u32 vol_id,
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u32 pnum, u32 lnum)
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{
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struct ubi_vol_info *vi = ubi->volinfo + vol_id;
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u32 *ltp;
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/*
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* If the volume is larger than expected, yell and give up :(
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*/
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if (lnum >= UBI_MAX_VOL_LEBS) {
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ubi_warn("Vol: %u LEB %d > %d", vol_id, lnum, UBI_MAX_VOL_LEBS);
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return -EINVAL;
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}
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ubi_dbg("SC: Add PEB %u to Vol %u as LEB %u fnd %d sc %d",
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pnum, vol_id, lnum, !!test_bit(lnum, vi->found),
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!!test_bit(pnum, ubi->scanned));
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/* Points to the translation entry */
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ltp = vi->lebs_to_pebs + lnum;
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/* If the block is already assigned, check sqnum */
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if (__test_and_set_bit(lnum, vi->found)) {
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u32 cur_pnum = *ltp;
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struct ubi_vid_hdr *cur = ubi->blockinfo + cur_pnum;
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/*
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* If the current block hase not yet been scanned, we
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* need to do that. The other block might be stale or
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* the current block corrupted and the FM not yet
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* updated.
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*/
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if (!test_bit(cur_pnum, ubi->scanned)) {
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/*
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* If the scan fails, we use the valid block
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*/
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if (ubi_rescan_fm_vid_hdr(ubi, cur, cur_pnum, vol_id,
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lnum)) {
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*ltp = pnum;
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return 0;
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}
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}
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/*
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* Should not happen ....
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*/
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if (test_bit(cur_pnum, ubi->corrupt)) {
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*ltp = pnum;
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return 0;
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}
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ubi_dbg("Vol %u LEB %u PEB %u->sqnum %llu NPEB %u->sqnum %llu",
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vol_id, lnum, cur_pnum, be64_to_cpu(cur->sqnum), pnum,
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be64_to_cpu(vh->sqnum));
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/*
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* Compare sqnum and take the newer one
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*/
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if (be64_to_cpu(cur->sqnum) < be64_to_cpu(vh->sqnum))
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*ltp = pnum;
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} else {
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*ltp = pnum;
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if (lnum > vi->last_block)
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vi->last_block = lnum;
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}
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return 0;
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}
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static int ubi_scan_vid_hdr(struct ubi_scan_info *ubi, struct ubi_vid_hdr *vh,
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u32 pnum)
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{
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u32 vol_id, lnum;
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int res;
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if (ubi_io_is_bad(ubi, pnum))
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return -EINVAL;
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res = ubi_io_read_vid_hdr(ubi, pnum, vh, 0);
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if (res)
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return res;
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/* Get volume id */
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vol_id = be32_to_cpu(vh->vol_id);
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/* If this is the fastmap anchor, return right away */
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if (vol_id == UBI_FM_SB_VOLUME_ID)
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return ubi->fm_enabled ? UBI_FASTMAP_ANCHOR : 0;
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#ifdef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
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/* If this is a UBI volume table, read it and return */
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if (vol_id == UBI_LAYOUT_VOLUME_ID && !ubi->vtbl_valid) {
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res = ubi_read_volume_table(ubi, pnum);
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return res;
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}
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#endif
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/* We only care about static volumes with an id < UBI_SPL_VOL_IDS */
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if (vol_id >= UBI_SPL_VOL_IDS || vh->vol_type != UBI_VID_STATIC)
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return 0;
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#ifndef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
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/* We are only interested in the volumes to load */
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if (!test_bit(vol_id, ubi->toload))
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return 0;
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#endif
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lnum = be32_to_cpu(vh->lnum);
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return ubi_add_peb_to_vol(ubi, vh, vol_id, pnum, lnum);
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}
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static int assign_aeb_to_av(struct ubi_scan_info *ubi, u32 pnum, u32 lnum,
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u32 vol_id, u32 vol_type, u32 used)
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{
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struct ubi_vid_hdr *vh;
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if (ubi_io_is_bad(ubi, pnum))
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return -EINVAL;
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ubi->fastmap_pebs++;
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#ifndef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
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if (vol_id >= UBI_SPL_VOL_IDS || vol_type != UBI_STATIC_VOLUME)
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return 0;
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/* We are only interested in the volumes to load */
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if (!test_bit(vol_id, ubi->toload))
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return 0;
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#endif
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vh = ubi->blockinfo + pnum;
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return ubi_scan_vid_hdr(ubi, vh, pnum);
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}
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static int scan_pool(struct ubi_scan_info *ubi, __be32 *pebs, int pool_size)
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{
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struct ubi_vid_hdr *vh;
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u32 pnum;
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int i;
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ubi_dbg("Scanning pool size: %d", pool_size);
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for (i = 0; i < pool_size; i++) {
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pnum = be32_to_cpu(pebs[i]);
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if (ubi_io_is_bad(ubi, pnum)) {
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ubi_err("FM: Bad PEB in fastmap pool! %u", pnum);
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return UBI_BAD_FASTMAP;
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}
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vh = ubi->blockinfo + pnum;
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/*
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* We allow the scan to fail here. The loader will notice
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* and look for a replacement.
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*/
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ubi_scan_vid_hdr(ubi, vh, pnum);
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}
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return 0;
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}
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/*
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* Fastmap code is stolen from Linux kernel and this stub structure is used
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* to make it happy.
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*/
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struct ubi_attach_info {
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int i;
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};
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static int ubi_attach_fastmap(struct ubi_scan_info *ubi,
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struct ubi_attach_info *ai,
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struct ubi_fastmap_layout *fm)
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{
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struct ubi_fm_hdr *fmhdr;
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struct ubi_fm_scan_pool *fmpl1, *fmpl2;
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struct ubi_fm_ec *fmec;
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struct ubi_fm_volhdr *fmvhdr;
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|
struct ubi_fm_eba *fm_eba;
|
|
int ret, i, j, pool_size, wl_pool_size;
|
|
size_t fm_pos = 0, fm_size = ubi->fm_size;
|
|
void *fm_raw = ubi->fm_buf;
|
|
|
|
memset(ubi->fm_used, 0, sizeof(ubi->fm_used));
|
|
|
|
fm_pos += sizeof(struct ubi_fm_sb);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
|
|
fmhdr = (struct ubi_fm_hdr *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmhdr);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
|
|
if (be32_to_cpu(fmhdr->magic) != UBI_FM_HDR_MAGIC) {
|
|
ubi_err("bad fastmap header magic: 0x%x, expected: 0x%x",
|
|
be32_to_cpu(fmhdr->magic), UBI_FM_HDR_MAGIC);
|
|
goto fail_bad;
|
|
}
|
|
|
|
fmpl1 = (struct ubi_fm_scan_pool *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmpl1);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
if (be32_to_cpu(fmpl1->magic) != UBI_FM_POOL_MAGIC) {
|
|
ubi_err("bad fastmap pool magic: 0x%x, expected: 0x%x",
|
|
be32_to_cpu(fmpl1->magic), UBI_FM_POOL_MAGIC);
|
|
goto fail_bad;
|
|
}
|
|
|
|
fmpl2 = (struct ubi_fm_scan_pool *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmpl2);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
if (be32_to_cpu(fmpl2->magic) != UBI_FM_POOL_MAGIC) {
|
|
ubi_err("bad fastmap pool magic: 0x%x, expected: 0x%x",
|
|
be32_to_cpu(fmpl2->magic), UBI_FM_POOL_MAGIC);
|
|
goto fail_bad;
|
|
}
|
|
|
|
pool_size = be16_to_cpu(fmpl1->size);
|
|
wl_pool_size = be16_to_cpu(fmpl2->size);
|
|
fm->max_pool_size = be16_to_cpu(fmpl1->max_size);
|
|
fm->max_wl_pool_size = be16_to_cpu(fmpl2->max_size);
|
|
|
|
if (pool_size > UBI_FM_MAX_POOL_SIZE || pool_size < 0) {
|
|
ubi_err("bad pool size: %i", pool_size);
|
|
goto fail_bad;
|
|
}
|
|
|
|
if (wl_pool_size > UBI_FM_MAX_POOL_SIZE || wl_pool_size < 0) {
|
|
ubi_err("bad WL pool size: %i", wl_pool_size);
|
|
goto fail_bad;
|
|
}
|
|
|
|
if (fm->max_pool_size > UBI_FM_MAX_POOL_SIZE ||
|
|
fm->max_pool_size < 0) {
|
|
ubi_err("bad maximal pool size: %i", fm->max_pool_size);
|
|
goto fail_bad;
|
|
}
|
|
|
|
if (fm->max_wl_pool_size > UBI_FM_MAX_POOL_SIZE ||
|
|
fm->max_wl_pool_size < 0) {
|
|
ubi_err("bad maximal WL pool size: %i", fm->max_wl_pool_size);
|
|
goto fail_bad;
|
|
}
|
|
|
|
/* read EC values from free list */
|
|
for (i = 0; i < be32_to_cpu(fmhdr->free_peb_count); i++) {
|
|
fmec = (struct ubi_fm_ec *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmec);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
}
|
|
|
|
/* read EC values from used list */
|
|
for (i = 0; i < be32_to_cpu(fmhdr->used_peb_count); i++) {
|
|
fmec = (struct ubi_fm_ec *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmec);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
|
|
generic_set_bit(be32_to_cpu(fmec->pnum), ubi->fm_used);
|
|
}
|
|
|
|
/* read EC values from scrub list */
|
|
for (i = 0; i < be32_to_cpu(fmhdr->scrub_peb_count); i++) {
|
|
fmec = (struct ubi_fm_ec *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmec);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
}
|
|
|
|
/* read EC values from erase list */
|
|
for (i = 0; i < be32_to_cpu(fmhdr->erase_peb_count); i++) {
|
|
fmec = (struct ubi_fm_ec *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmec);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
}
|
|
|
|
/* Iterate over all volumes and read their EBA table */
|
|
for (i = 0; i < be32_to_cpu(fmhdr->vol_count); i++) {
|
|
u32 vol_id, vol_type, used, reserved;
|
|
|
|
fmvhdr = (struct ubi_fm_volhdr *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fmvhdr);
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
|
|
if (be32_to_cpu(fmvhdr->magic) != UBI_FM_VHDR_MAGIC) {
|
|
ubi_err("bad fastmap vol header magic: 0x%x, " \
|
|
"expected: 0x%x",
|
|
be32_to_cpu(fmvhdr->magic), UBI_FM_VHDR_MAGIC);
|
|
goto fail_bad;
|
|
}
|
|
|
|
vol_id = be32_to_cpu(fmvhdr->vol_id);
|
|
vol_type = fmvhdr->vol_type;
|
|
used = be32_to_cpu(fmvhdr->used_ebs);
|
|
|
|
fm_eba = (struct ubi_fm_eba *)(fm_raw + fm_pos);
|
|
fm_pos += sizeof(*fm_eba);
|
|
fm_pos += (sizeof(__be32) * be32_to_cpu(fm_eba->reserved_pebs));
|
|
if (fm_pos >= fm_size)
|
|
goto fail_bad;
|
|
|
|
if (be32_to_cpu(fm_eba->magic) != UBI_FM_EBA_MAGIC) {
|
|
ubi_err("bad fastmap EBA header magic: 0x%x, " \
|
|
"expected: 0x%x",
|
|
be32_to_cpu(fm_eba->magic), UBI_FM_EBA_MAGIC);
|
|
goto fail_bad;
|
|
}
|
|
|
|
reserved = be32_to_cpu(fm_eba->reserved_pebs);
|
|
ubi_dbg("FA: vol %u used %u res: %u", vol_id, used, reserved);
|
|
for (j = 0; j < reserved; j++) {
|
|
int pnum = be32_to_cpu(fm_eba->pnum[j]);
|
|
|
|
if ((int)be32_to_cpu(fm_eba->pnum[j]) < 0)
|
|
continue;
|
|
|
|
if (!__test_and_clear_bit(pnum, ubi->fm_used))
|
|
continue;
|
|
|
|
/*
|
|
* We only handle static volumes so used_ebs
|
|
* needs to be handed in. And we do not assign
|
|
* the reserved blocks
|
|
*/
|
|
if (j >= used)
|
|
continue;
|
|
|
|
ret = assign_aeb_to_av(ubi, pnum, j, vol_id,
|
|
vol_type, used);
|
|
if (!ret)
|
|
continue;
|
|
|
|
/*
|
|
* Nasty: The fastmap claims that the volume
|
|
* has one block more than it, but that block
|
|
* is always empty and the other blocks have
|
|
* the correct number of total LEBs in the
|
|
* headers. Deal with it.
|
|
*/
|
|
if (ret != UBI_IO_FF && j != used - 1)
|
|
goto fail_bad;
|
|
ubi_dbg("FA: Vol: %u Ignoring empty LEB %d of %d",
|
|
vol_id, j, used);
|
|
}
|
|
}
|
|
|
|
ret = scan_pool(ubi, fmpl1->pebs, pool_size);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
ret = scan_pool(ubi, fmpl2->pebs, wl_pool_size);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
#ifdef CHECKME
|
|
/*
|
|
* If fastmap is leaking PEBs (must not happen), raise a
|
|
* fat warning and fall back to scanning mode.
|
|
* We do this here because in ubi_wl_init() it's too late
|
|
* and we cannot fall back to scanning.
|
|
*/
|
|
if (WARN_ON(count_fastmap_pebs(ai) != ubi->peb_count -
|
|
ai->bad_peb_count - fm->used_blocks))
|
|
goto fail_bad;
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
fail_bad:
|
|
ret = UBI_BAD_FASTMAP;
|
|
fail:
|
|
return ret;
|
|
}
|
|
|
|
static int ubi_scan_fastmap(struct ubi_scan_info *ubi,
|
|
struct ubi_attach_info *ai,
|
|
int fm_anchor)
|
|
{
|
|
struct ubi_fm_sb *fmsb, *fmsb2;
|
|
struct ubi_vid_hdr *vh;
|
|
struct ubi_fastmap_layout *fm;
|
|
int i, used_blocks, pnum, ret = 0;
|
|
size_t fm_size;
|
|
__be32 crc, tmp_crc;
|
|
unsigned long long sqnum = 0;
|
|
|
|
fmsb = &ubi->fm_sb;
|
|
fm = &ubi->fm_layout;
|
|
|
|
ret = ubi_io_read(ubi, fmsb, fm_anchor, ubi->leb_start, sizeof(*fmsb));
|
|
if (ret && ret != UBI_IO_BITFLIPS)
|
|
goto free_fm_sb;
|
|
else if (ret == UBI_IO_BITFLIPS)
|
|
fm->to_be_tortured[0] = 1;
|
|
|
|
if (be32_to_cpu(fmsb->magic) != UBI_FM_SB_MAGIC) {
|
|
ubi_err("bad super block magic: 0x%x, expected: 0x%x",
|
|
be32_to_cpu(fmsb->magic), UBI_FM_SB_MAGIC);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_fm_sb;
|
|
}
|
|
|
|
if (fmsb->version != UBI_FM_FMT_VERSION) {
|
|
ubi_err("bad fastmap version: %i, expected: %i",
|
|
fmsb->version, UBI_FM_FMT_VERSION);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_fm_sb;
|
|
}
|
|
|
|
used_blocks = be32_to_cpu(fmsb->used_blocks);
|
|
if (used_blocks > UBI_FM_MAX_BLOCKS || used_blocks < 1) {
|
|
ubi_err("number of fastmap blocks is invalid: %i", used_blocks);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_fm_sb;
|
|
}
|
|
|
|
fm_size = ubi->leb_size * used_blocks;
|
|
if (fm_size != ubi->fm_size) {
|
|
ubi_err("bad fastmap size: %zi, expected: %zi", fm_size,
|
|
ubi->fm_size);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_fm_sb;
|
|
}
|
|
|
|
vh = &ubi->fm_vh;
|
|
|
|
for (i = 0; i < used_blocks; i++) {
|
|
pnum = be32_to_cpu(fmsb->block_loc[i]);
|
|
|
|
if (ubi_io_is_bad(ubi, pnum)) {
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
}
|
|
|
|
#ifdef LATER
|
|
int image_seq;
|
|
ret = ubi_io_read_ec_hdr(ubi, pnum, ech, 0);
|
|
if (ret && ret != UBI_IO_BITFLIPS) {
|
|
ubi_err("unable to read fastmap block# %i EC (PEB: %i)",
|
|
i, pnum);
|
|
if (ret > 0)
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
} else if (ret == UBI_IO_BITFLIPS)
|
|
fm->to_be_tortured[i] = 1;
|
|
|
|
image_seq = be32_to_cpu(ech->image_seq);
|
|
if (!ubi->image_seq)
|
|
ubi->image_seq = image_seq;
|
|
/*
|
|
* Older UBI implementations have image_seq set to zero, so
|
|
* we shouldn't fail if image_seq == 0.
|
|
*/
|
|
if (image_seq && (image_seq != ubi->image_seq)) {
|
|
ubi_err("wrong image seq:%d instead of %d",
|
|
be32_to_cpu(ech->image_seq), ubi->image_seq);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
}
|
|
#endif
|
|
ret = ubi_io_read_vid_hdr(ubi, pnum, vh, 0);
|
|
if (ret && ret != UBI_IO_BITFLIPS) {
|
|
ubi_err("unable to read fastmap block# %i (PEB: %i)",
|
|
i, pnum);
|
|
goto free_hdr;
|
|
}
|
|
|
|
/*
|
|
* Mainline code rescans the anchor header. We've done
|
|
* that already so we merily copy it over.
|
|
*/
|
|
if (pnum == fm_anchor)
|
|
memcpy(vh, ubi->blockinfo + pnum, sizeof(*fm));
|
|
|
|
if (i == 0) {
|
|
if (be32_to_cpu(vh->vol_id) != UBI_FM_SB_VOLUME_ID) {
|
|
ubi_err("bad fastmap anchor vol_id: 0x%x," \
|
|
" expected: 0x%x",
|
|
be32_to_cpu(vh->vol_id),
|
|
UBI_FM_SB_VOLUME_ID);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
}
|
|
} else {
|
|
if (be32_to_cpu(vh->vol_id) != UBI_FM_DATA_VOLUME_ID) {
|
|
ubi_err("bad fastmap data vol_id: 0x%x," \
|
|
" expected: 0x%x",
|
|
be32_to_cpu(vh->vol_id),
|
|
UBI_FM_DATA_VOLUME_ID);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
}
|
|
}
|
|
|
|
if (sqnum < be64_to_cpu(vh->sqnum))
|
|
sqnum = be64_to_cpu(vh->sqnum);
|
|
|
|
ret = ubi_io_read(ubi, ubi->fm_buf + (ubi->leb_size * i), pnum,
|
|
ubi->leb_start, ubi->leb_size);
|
|
if (ret && ret != UBI_IO_BITFLIPS) {
|
|
ubi_err("unable to read fastmap block# %i (PEB: %i, " \
|
|
"err: %i)", i, pnum, ret);
|
|
goto free_hdr;
|
|
}
|
|
}
|
|
|
|
fmsb2 = (struct ubi_fm_sb *)(ubi->fm_buf);
|
|
tmp_crc = be32_to_cpu(fmsb2->data_crc);
|
|
fmsb2->data_crc = 0;
|
|
crc = crc32(UBI_CRC32_INIT, ubi->fm_buf, fm_size);
|
|
if (crc != tmp_crc) {
|
|
ubi_err("fastmap data CRC is invalid");
|
|
ubi_err("CRC should be: 0x%x, calc: 0x%x", tmp_crc, crc);
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
}
|
|
|
|
fmsb2->sqnum = sqnum;
|
|
|
|
fm->used_blocks = used_blocks;
|
|
|
|
ret = ubi_attach_fastmap(ubi, ai, fm);
|
|
if (ret) {
|
|
if (ret > 0)
|
|
ret = UBI_BAD_FASTMAP;
|
|
goto free_hdr;
|
|
}
|
|
|
|
ubi->fm = fm;
|
|
ubi->fm_pool.max_size = ubi->fm->max_pool_size;
|
|
ubi->fm_wl_pool.max_size = ubi->fm->max_wl_pool_size;
|
|
ubi_msg("attached by fastmap %uMB %u blocks",
|
|
ubi->fsize_mb, ubi->peb_count);
|
|
ubi_dbg("fastmap pool size: %d", ubi->fm_pool.max_size);
|
|
ubi_dbg("fastmap WL pool size: %d", ubi->fm_wl_pool.max_size);
|
|
|
|
out:
|
|
if (ret)
|
|
ubi_err("Attach by fastmap failed, doing a full scan!");
|
|
return ret;
|
|
|
|
free_hdr:
|
|
free_fm_sb:
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Scan the flash and attempt to attach via fastmap
|
|
*/
|
|
static void ipl_scan(struct ubi_scan_info *ubi)
|
|
{
|
|
unsigned int pnum;
|
|
int res;
|
|
|
|
/*
|
|
* Scan first for the fastmap super block
|
|
*/
|
|
for (pnum = 0; pnum < UBI_FM_MAX_START; pnum++) {
|
|
res = ubi_scan_vid_hdr(ubi, ubi->blockinfo + pnum, pnum);
|
|
/*
|
|
* We ignore errors here as we are meriliy scanning
|
|
* the headers.
|
|
*/
|
|
if (res != UBI_FASTMAP_ANCHOR)
|
|
continue;
|
|
|
|
/*
|
|
* If fastmap is disabled, continue scanning. This
|
|
* might happen because the previous attempt failed or
|
|
* the caller disabled it right away.
|
|
*/
|
|
if (!ubi->fm_enabled)
|
|
continue;
|
|
|
|
/*
|
|
* Try to attach the fastmap, if that fails continue
|
|
* scanning.
|
|
*/
|
|
if (!ubi_scan_fastmap(ubi, NULL, pnum))
|
|
return;
|
|
/*
|
|
* Fastmap failed. Clear everything we have and start
|
|
* over. We are paranoid and do not trust anything.
|
|
*/
|
|
memset(ubi->volinfo, 0, sizeof(ubi->volinfo));
|
|
pnum = 0;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Continue scanning, ignore errors, we might find what we are
|
|
* looking for,
|
|
*/
|
|
for (; pnum < ubi->peb_count; pnum++)
|
|
ubi_scan_vid_hdr(ubi, ubi->blockinfo + pnum, pnum);
|
|
}
|
|
|
|
/*
|
|
* Load a logical block of a volume into memory
|
|
*/
|
|
static int ubi_load_block(struct ubi_scan_info *ubi, uint8_t *laddr,
|
|
struct ubi_vol_info *vi, u32 vol_id, u32 lnum,
|
|
u32 last)
|
|
{
|
|
struct ubi_vid_hdr *vh, *vrepl;
|
|
u32 pnum, crc, dlen;
|
|
|
|
retry:
|
|
/*
|
|
* If this is a fastmap run, we try to rescan full, otherwise
|
|
* we simply give up.
|
|
*/
|
|
if (!test_bit(lnum, vi->found)) {
|
|
ubi_warn("LEB %d of %d is missing", lnum, last);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pnum = vi->lebs_to_pebs[lnum];
|
|
|
|
ubi_dbg("Load vol %u LEB %u PEB %u", vol_id, lnum, pnum);
|
|
|
|
if (ubi_io_is_bad(ubi, pnum)) {
|
|
ubi_warn("Corrupted mapping block %d PB %d\n", lnum, pnum);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (test_bit(pnum, ubi->corrupt))
|
|
goto find_other;
|
|
|
|
/*
|
|
* Lets try to read that block
|
|
*/
|
|
vh = ubi->blockinfo + pnum;
|
|
|
|
if (!test_bit(pnum, ubi->scanned)) {
|
|
ubi_warn("Vol: %u LEB %u PEB %u not yet scanned", vol_id,
|
|
lnum, pnum);
|
|
if (ubi_rescan_fm_vid_hdr(ubi, vh, pnum, vol_id, lnum))
|
|
goto find_other;
|
|
}
|
|
|
|
/*
|
|
* Check, if the total number of blocks is correct
|
|
*/
|
|
if (be32_to_cpu(vh->used_ebs) != last) {
|
|
ubi_dbg("Block count missmatch.");
|
|
ubi_dbg("vh->used_ebs: %d nrblocks: %d",
|
|
be32_to_cpu(vh->used_ebs), last);
|
|
generic_set_bit(pnum, ubi->corrupt);
|
|
goto find_other;
|
|
}
|
|
|
|
/*
|
|
* Get the data length of this block.
|
|
*/
|
|
dlen = be32_to_cpu(vh->data_size);
|
|
|
|
/*
|
|
* Read the data into RAM. We ignore the return value
|
|
* here as the only thing which might go wrong are
|
|
* bitflips. Try nevertheless.
|
|
*/
|
|
ubi_io_read(ubi, laddr, pnum, ubi->leb_start, dlen);
|
|
|
|
/* Calculate CRC over the data */
|
|
crc = crc32(UBI_CRC32_INIT, laddr, dlen);
|
|
|
|
if (crc != be32_to_cpu(vh->data_crc)) {
|
|
ubi_warn("Vol: %u LEB %u PEB %u data CRC failure", vol_id,
|
|
lnum, pnum);
|
|
generic_set_bit(pnum, ubi->corrupt);
|
|
goto find_other;
|
|
}
|
|
|
|
/* We are good. Return the data length we read */
|
|
return dlen;
|
|
|
|
find_other:
|
|
ubi_dbg("Find replacement for LEB %u PEB %u", lnum, pnum);
|
|
generic_clear_bit(lnum, vi->found);
|
|
vrepl = NULL;
|
|
|
|
for (pnum = 0; pnum < ubi->peb_count; pnum++) {
|
|
struct ubi_vid_hdr *tmp = ubi->blockinfo + pnum;
|
|
u32 t_vol_id = be32_to_cpu(tmp->vol_id);
|
|
u32 t_lnum = be32_to_cpu(tmp->lnum);
|
|
|
|
if (test_bit(pnum, ubi->corrupt))
|
|
continue;
|
|
|
|
if (t_vol_id != vol_id || t_lnum != lnum)
|
|
continue;
|
|
|
|
if (!test_bit(pnum, ubi->scanned)) {
|
|
ubi_warn("Vol: %u LEB %u PEB %u not yet scanned",
|
|
vol_id, lnum, pnum);
|
|
if (ubi_rescan_fm_vid_hdr(ubi, tmp, pnum, vol_id, lnum))
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* We found one. If its the first, assign it otherwise
|
|
* compare the sqnum
|
|
*/
|
|
generic_set_bit(lnum, vi->found);
|
|
|
|
if (!vrepl) {
|
|
vrepl = tmp;
|
|
continue;
|
|
}
|
|
|
|
if (be64_to_cpu(vrepl->sqnum) < be64_to_cpu(tmp->sqnum))
|
|
vrepl = tmp;
|
|
}
|
|
|
|
if (vrepl) {
|
|
/* Update the vi table */
|
|
pnum = vrepl - ubi->blockinfo;
|
|
vi->lebs_to_pebs[lnum] = pnum;
|
|
ubi_dbg("Trying PEB %u for LEB %u", pnum, lnum);
|
|
vh = vrepl;
|
|
}
|
|
goto retry;
|
|
}
|
|
|
|
/*
|
|
* Load a volume into RAM
|
|
*/
|
|
static int ipl_load(struct ubi_scan_info *ubi, const u32 vol_id, uint8_t *laddr)
|
|
{
|
|
struct ubi_vol_info *vi;
|
|
u32 lnum, last, len;
|
|
|
|
if (vol_id >= UBI_SPL_VOL_IDS)
|
|
return -EINVAL;
|
|
|
|
len = 0;
|
|
vi = ubi->volinfo + vol_id;
|
|
last = vi->last_block + 1;
|
|
|
|
/* Read the blocks to RAM, check CRC */
|
|
for (lnum = 0 ; lnum < last; lnum++) {
|
|
int res = ubi_load_block(ubi, laddr, vi, vol_id, lnum, last);
|
|
|
|
if (res < 0) {
|
|
ubi_warn("Failed to load volume %u", vol_id);
|
|
return res;
|
|
}
|
|
/* res is the data length of the read block */
|
|
laddr += res;
|
|
len += res;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
int ubispl_load_volumes(struct ubispl_info *info, struct ubispl_load *lvols,
|
|
int nrvols)
|
|
{
|
|
struct ubi_scan_info *ubi = info->ubi;
|
|
int res, i, fastmap = info->fastmap;
|
|
u32 fsize;
|
|
|
|
retry:
|
|
/*
|
|
* We do a partial initializiation of @ubi. Cleaning fm_buf is
|
|
* not necessary.
|
|
*/
|
|
memset(ubi, 0, offsetof(struct ubi_scan_info, fm_buf));
|
|
|
|
ubi->read = info->read;
|
|
|
|
/* Precalculate the offsets */
|
|
ubi->vid_offset = info->vid_offset;
|
|
ubi->leb_start = info->leb_start;
|
|
ubi->leb_size = info->peb_size - ubi->leb_start;
|
|
ubi->peb_count = info->peb_count;
|
|
ubi->peb_offset = info->peb_offset;
|
|
|
|
#ifdef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
|
|
ubi->vtbl_valid = 0;
|
|
#endif
|
|
|
|
fsize = info->peb_size * info->peb_count;
|
|
ubi->fsize_mb = fsize >> 20;
|
|
|
|
/* Fastmap init */
|
|
ubi->fm_size = ubi_calc_fm_size(ubi);
|
|
ubi->fm_enabled = fastmap;
|
|
|
|
for (i = 0; i < nrvols; i++) {
|
|
struct ubispl_load *lv = lvols + i;
|
|
|
|
generic_set_bit(lv->vol_id, ubi->toload);
|
|
}
|
|
|
|
ipl_scan(ubi);
|
|
|
|
for (i = 0; i < nrvols; i++) {
|
|
struct ubispl_load *lv = lvols + i;
|
|
|
|
#ifdef CONFIG_SPL_UBI_LOAD_BY_VOLNAME
|
|
if (lv->vol_id == -1) {
|
|
for (int j = 0; j < UBI_SPL_VOL_IDS; j++) {
|
|
int len = be16_to_cpu(ubi->vtbl[j].name_len);
|
|
|
|
if (strncmp(lv->name,
|
|
ubi->vtbl[j].name,
|
|
len) == 0) {
|
|
lv->vol_id = j;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
ubi_msg("Loading VolName %s (VolId #%d)", lv->name, lv->vol_id);
|
|
#else
|
|
ubi_msg("Loading VolId #%d", lv->vol_id);
|
|
#endif
|
|
res = ipl_load(ubi, lv->vol_id, lv->load_addr);
|
|
if (res < 0) {
|
|
if (fastmap) {
|
|
fastmap = 0;
|
|
goto retry;
|
|
}
|
|
ubi_warn("Failed");
|
|
return res;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|