Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 239 insertions, 0 deletions

diff --git a/src/udev/mtd_probe/mtd_probe.c b/src/udev/mtd_probe/mtd_probe.c
new file mode 100644
index 0000000..1035320
--- /dev/null
+++ b/src/udev/mtd_probe/mtd_probe.c
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright © 2010 - Maxim Levitsky
+ *
+ * mtd_probe is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mtd_probe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with mtd_probe; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA  02110-1301  USA
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <mtd/mtd-user.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "build.h"
+#include "fd-util.h"
+#include "main-func.h"
+#include "mtd_probe.h"
+
+static const char *arg_device = NULL;
+
+static int parse_argv(int argc, char *argv[]) {
+        static const struct option options[] = {
+                { "help",     no_argument, NULL, 'h' },
+                { "version",  no_argument, NULL, 'v' },
+                {}
+        };
+        int c;
+
+        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+                switch (c) {
+                case 'h':
+                        printf("%s /dev/mtd[n]\n\n"
+                               "  -h --help     Show this help text\n"
+                               "     --version  Show package version\n",
+                               program_invocation_short_name);
+                        return 0;
+                case 'v':
+                        return version();
+                case '?':
+                        return -EINVAL;
+                default:
+                        assert_not_reached();
+                }
+
+        if (argc > 2)
+                return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Error: unexpected argument.");
+
+        arg_device = argv[optind];
+        return 1;
+}
+
+static int run(int argc, char** argv) {
+        _cleanup_close_ int mtd_fd = -EBADF;
+        mtd_info_t mtd_info;
+        int r;
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        mtd_fd = open(argv[1], O_RDONLY|O_CLOEXEC|O_NOCTTY);
+        if (mtd_fd < 0)
+                return log_error_errno(errno, "Failed to open: %m");
+
+        if (ioctl(mtd_fd, MEMGETINFO, &mtd_info) < 0)
+                return log_error_errno(errno, "MEMGETINFO ioctl failed: %m");
+
+        return probe_smart_media(mtd_fd, &mtd_info);
+}
+
+DEFINE_MAIN_FUNCTION(run);
diff --git a/src/udev/mtd_probe/mtd_probe.h b/src/udev/mtd_probe/mtd_probe.h
new file mode 100644
index 0000000..ae03a7d
--- /dev/null
+++ b/src/udev/mtd_probe/mtd_probe.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#pragma once
+
+/*
+ * Copyright © 2010 - Maxim Levitsky
+ *
+ * mtd_probe is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mtd_probe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with mtd_probe; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA  02110-1301  USA
+ */
+
+#include <mtd/mtd-user.h>
+
+#include "macro.h"
+
+/* Full oob structure as written on the flash */
+struct sm_oob {
+        uint32_t reserved;
+        uint8_t data_status;
+        uint8_t block_status;
+        uint8_t lba_copy1[2];
+        uint8_t ecc2[3];
+        uint8_t lba_copy2[2];
+        uint8_t ecc1[3];
+} _packed_;
+
+/* one sector is always 512 bytes, but it can consist of two nand pages */
+#define SM_SECTOR_SIZE                512
+
+/* oob area is also 16 bytes, but might be from two pages */
+#define SM_OOB_SIZE                16
+
+/* This is maximum zone size, and all devices that have more that one zone
+   have this size */
+#define SM_MAX_ZONE_SIZE         1024
+
+/* support for small page nand */
+#define SM_SMALL_PAGE                 256
+#define SM_SMALL_OOB_SIZE        8
+
+int probe_smart_media(int mtd_fd, mtd_info_t *info);
diff --git a/src/udev/mtd_probe/probe_smartmedia.c b/src/udev/mtd_probe/probe_smartmedia.c
new file mode 100644
index 0000000..368fab8
--- /dev/null
+++ b/src/udev/mtd_probe/probe_smartmedia.c
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright © 2010 - Maxim Levitsky
+ *
+ * mtd_probe is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mtd_probe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with mtd_probe; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA  02110-1301  USA
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <mtd/mtd-user.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "mtd_probe.h"
+
+static const uint8_t cis_signature[] = {
+        0x01, 0x03, 0xD9, 0x01, 0xFF, 0x18, 0x02, 0xDF, 0x01, 0x20
+};
+
+int probe_smart_media(int mtd_fd, mtd_info_t* info) {
+        int sector_size;
+        int block_size;
+        int size_in_megs;
+        int spare_count;
+        _cleanup_free_ uint8_t *cis_buffer = NULL;
+        int offset;
+        int cis_found = 0;
+
+        cis_buffer = malloc(SM_SECTOR_SIZE);
+        if (!cis_buffer)
+                return log_oom();
+
+        if (info->type != MTD_NANDFLASH)
+                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
+                                       "Not marked MTD_NANDFLASH.");
+
+        sector_size = info->writesize;
+        block_size = info->erasesize;
+        size_in_megs = info->size / (1024 * 1024);
+
+        if (!IN_SET(sector_size, SM_SECTOR_SIZE, SM_SMALL_PAGE))
+                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
+                                       "Unexpected sector size: %i", sector_size);
+
+        switch (size_in_megs) {
+        case 1:
+        case 2:
+                spare_count = 6;
+                break;
+        case 4:
+                spare_count = 12;
+                break;
+        default:
+                spare_count = 24;
+                break;
+        }
+
+        for (offset = 0; offset < block_size * spare_count; offset += sector_size) {
+                (void) lseek(mtd_fd, SEEK_SET, offset);
+
+                if (read(mtd_fd, cis_buffer, SM_SECTOR_SIZE) == SM_SECTOR_SIZE) {
+                        cis_found = 1;
+                        break;
+                }
+        }
+
+        if (!cis_found)
+                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
+                                       "CIS not found");
+
+        if (memcmp(cis_buffer, cis_signature, sizeof(cis_signature)) != 0 &&
+            memcmp(cis_buffer + SM_SMALL_PAGE, cis_signature, sizeof(cis_signature)) != 0)
+                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
+                                       "CIS signature didn't match");
+
+        printf("MTD_FTL=smartmedia\n");
+        return 0;
+}