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openwrt/target/linux/generic/pending-5.4/430-mtd-add-myloader-partit...

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From: Florian Fainelli <f.fainelli@gmail.com>
Subject: Add myloader partition table parser
[john@phozen.org: shoud be upstreamable]
lede-commit: d8bf22859b51faa09d22c056fe221a45d2f7a3b8
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
[adjust for kernel 5.4, add myloader.c to patch]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
--- a/drivers/mtd/parsers/Kconfig
+++ b/drivers/mtd/parsers/Kconfig
@@ -57,6 +57,22 @@ config MTD_CMDLINE_PARTS
If unsure, say 'N'.
+config MTD_MYLOADER_PARTS
+ tristate "MyLoader partition parsing"
+ depends on ADM5120 || ATH25 || ATH79
+ ---help---
+ MyLoader is a bootloader which allows the user to define partitions
+ in flash devices, by putting a table in the second erase block
+ on the device, similar to a partition table. This table gives the
+ offsets and lengths of the user defined partitions.
+
+ If you need code which can detect and parse these tables, and
+ register MTD 'partitions' corresponding to each image detected,
+ enable this option.
+
+ You will still need the parsing functions to be called by the driver
+ for your particular device. It won't happen automatically.
+
config MTD_OF_PARTS
tristate "OpenFirmware (device tree) partitioning parser"
default y
kernel: add support for kernel 5.4 The following patches were removed because they are integrated in the upstream kernel 5.4: * backport-5.4/047-v4.21-mtd-keep-original-flags-for-every-struct-mtd_info.patch * backport-5.4/048-v4.21-mtd-improve-calculating-partition-boundaries-when-ch.patch * backport-5.4/080-v5.1-0001-bcma-keep-a-direct-pointer-to-the-struct-device.patch * backport-5.4/080-v5.1-0002-bcma-use-dev_-printing-functions.patch * backport-5.4/095-Allow-class-e-address-assignment-via-ifconfig-ioctl.patch * backport-5.4/101-arm-cns3xxx-use-actual-size-reads-for-PCIe.patch * backport-5.4/200-v5.2-usb-dwc2-Set-lpm-mode-parameters-depend-on-HW-configuration.patch * backport-5.4/210-arm64-sve-Disentangle-uapi-asm-ptrace.h-from-uapi-as.patch * backport-5.4/380-v5.3-net-sched-Introduce-act_ctinfo-action.patch * backport-5.4/450-v5.0-mtd-spinand-winbond-Add-support-for-W25N01GV.patch * backport-5.4/451-v5.0-mtd-spinand-Add-initial-support-for-Toshiba-TC58CVG2.patch * backport-5.4/452-v5.0-mtd-spinand-add-support-for-GigaDevice-GD5FxGQ4xA.patch * backport-5.4/455-v5.1-mtd-spinand-Add-support-for-all-Toshiba-Memory-produ.patch * backport-5.4/456-v5.1-mtd-spinand-Add-support-for-GigaDevice-GD5F1GQ4UExxG.patch * backport-5.4/460-v5.0-mtd-spi-nor-Add-support-for-mx25u12835f.patch * backport-5.4/460-v5.3-mtd-spinand-Define-macros-for-page-read-ops-with-thr.patch * backport-5.4/461-v5.3-mtd-spinand-Add-support-for-two-byte-device-IDs.patch * backport-5.4/462-v5.3-mtd-spinand-Add-support-for-GigaDevice-GD5F1GQ4UFxxG.patch * backport-5.4/463-v5.3-mtd-spinand-Add-initial-support-for-Paragon-PN26G0xA.patch * backport-5.4/700-v5.1-net-phylink-only-call-mac_config-during-resolve-when.patch * backport-5.4/701-v5.2-net-phylink-ensure-inband-AN-works-correctly.patch * backport-5.4/702-v4.20-net-ethernet-Add-helper-for-MACs-which-support-asym-.patch * backport-5.4/703-v4.20-net-ethernet-Add-helper-for-set_pauseparam-for-Asym-.patch * backport-5.4/704-v4.20-net-phy-Stop-with-excessive-soft-reset.patch * backport-5.4/705-v5.1-net-phy-provide-full-set-of-accessor-functions-to-MM.patch * backport-5.4/706-v5.1-net-phy-add-register-modifying-helpers-returning-1-o.patch * backport-5.4/707-v5.1-net-phy-add-genphy_c45_check_and_restart_aneg.patch * backport-5.4/708-v5.3-net-phylink-remove-netdev-from-phylink-mii-ioctl-emu.patch * backport-5.4/709-v5.3-net-phylink-support-for-link-gpio-interrupt.patch * backport-5.4/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch * backport-5.4/711-v5.3-net-sfp-add-mandatory-attach-detach-methods-for-sfp-.patch * backport-5.4/712-v5.3-net-sfp-remove-sfp-bus-use-of-netdevs.patch * backport-5.4/713-v5.2-net-phylink-avoid-reducing-support-mask.patch * backport-5.4/714-v5.3-net-sfp-Stop-SFP-polling-and-interrupt-handling-duri.patch * backport-5.4/715-v5.3-net-phylink-don-t-start-and-stop-SGMII-PHYs-in-SFP-m.patch * backport-5.4/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch * backport-5.4/741-v5.5-net-phylink-fix-link-mode-modification-in-PHY-mode.patch * pending-5.4/103-MIPS-perf-ath79-Fix-perfcount-IRQ-assignment.patch * pending-5.4/131-spi-use-gpio_set_value_cansleep-for-setting-chipsele.patch * pending-5.4/132-spi-spi-gpio-fix-crash-when-num-chipselects-is-0.patch * pending-5.4/220-optimize_inlining.patch * pending-5.4/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch * pending-5.4/475-mtd-spi-nor-Add-Winbond-w25q128jv-support.patch * pending-5.4/477-mtd-add-spi-nor-add-mx25u3235f.patch * pending-5.4/479-mtd-spi-nor-add-eon-en25qh64.patch Some bigger changes were done to this feature and we did not port this patch yet: * hack-5.4/207-disable-modorder.patch This depends on BOOTMEM which was removed from the kernel, this needs some bigger changes: * hack-5.4/930-crashlog.patch A different version of the FPU disable patch was merged upstream, OpenWrt needs some adaptations. * pending-5.4/304-mips_disable_fpu.patch - no crashlog support yet as a required file got deleted upstream - Removed patch below, which is now seen as a recursive dependency [1] - Removed patch below due to build error [2] - fix still required to avoid identical function def [3] - Fixes included from Blocktrron - Fixes included from Chunkeey - Fix included from nbd regarding "dst leak in Flow Offload" [1] target/linux/generic/hack-5.4/260-crypto_test_dependencies.patch [2] target/linux/generic/hack-5.4/207-disable-modorder.patch [3] target/linux/generic/pending-5.4/613-netfilter_optional_tcp_window_check.patch Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com> Signed-off-by: David Bauer <mail@david-bauer.net> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> Signed-off-by: Robert Marko <robimarko@gmail.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
--- a/drivers/mtd/parsers/Makefile
+++ b/drivers/mtd/parsers/Makefile
@@ -3,6 +3,7 @@ obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.
obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm47xxpart.o
obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o
obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o
+obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o
obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o
obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o
obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
--- /dev/null
+++ b/drivers/mtd/parsers/myloader.c
@@ -0,0 +1,181 @@
+/*
+ * Parse MyLoader-style flash partition tables and produce a Linux partition
+ * array to match.
+ *
+ * Copyright (C) 2007-2009 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This file was based on drivers/mtd/redboot.c
+ * Author: Red Hat, Inc. - David Woodhouse <dwmw2@cambridge.redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/byteorder/generic.h>
+#include <linux/myloader.h>
+
+#define BLOCK_LEN_MIN 0x10000
+#define PART_NAME_LEN 32
+
+struct part_data {
+ struct mylo_partition_table tab;
+ char names[MYLO_MAX_PARTITIONS][PART_NAME_LEN];
+};
+
+static int myloader_parse_partitions(struct mtd_info *master,
+ const struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+{
+ struct part_data *buf;
+ struct mylo_partition_table *tab;
+ struct mylo_partition *part;
+ struct mtd_partition *mtd_parts;
+ struct mtd_partition *mtd_part;
+ int num_parts;
+ int ret, i;
+ size_t retlen;
+ char *names;
+ unsigned long offset;
+ unsigned long blocklen;
+
+ buf = vmalloc(sizeof(*buf));
+ if (!buf) {
+ return -ENOMEM;
+ goto out;
+ }
+ tab = &buf->tab;
+
+ blocklen = master->erasesize;
+ if (blocklen < BLOCK_LEN_MIN)
+ blocklen = BLOCK_LEN_MIN;
+
+ offset = blocklen;
+
+ /* Find the partition table */
+ for (i = 0; i < 4; i++, offset += blocklen) {
+ printk(KERN_DEBUG "%s: searching for MyLoader partition table"
+ " at offset 0x%lx\n", master->name, offset);
+
+ ret = mtd_read(master, offset, sizeof(*buf), &retlen,
+ (void *)buf);
+ if (ret)
+ goto out_free_buf;
+
+ if (retlen != sizeof(*buf)) {
+ ret = -EIO;
+ goto out_free_buf;
+ }
+
+ /* Check for Partition Table magic number */
+ if (tab->magic == le32_to_cpu(MYLO_MAGIC_PARTITIONS))
+ break;
+
+ }
+
+ if (tab->magic != le32_to_cpu(MYLO_MAGIC_PARTITIONS)) {
+ printk(KERN_DEBUG "%s: no MyLoader partition table found\n",
+ master->name);
+ ret = 0;
+ goto out_free_buf;
+ }
+
+ /* The MyLoader and the Partition Table is always present */
+ num_parts = 2;
+
+ /* Detect number of used partitions */
+ for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
+ part = &tab->partitions[i];
+
+ if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
+ continue;
+
+ num_parts++;
+ }
+
+ mtd_parts = kzalloc((num_parts * sizeof(*mtd_part) +
+ num_parts * PART_NAME_LEN), GFP_KERNEL);
+
+ if (!mtd_parts) {
+ ret = -ENOMEM;
+ goto out_free_buf;
+ }
+
+ mtd_part = mtd_parts;
+ names = (char *)&mtd_parts[num_parts];
+
+ strncpy(names, "myloader", PART_NAME_LEN);
+ mtd_part->name = names;
+ mtd_part->offset = 0;
+ mtd_part->size = offset;
+ mtd_part->mask_flags = MTD_WRITEABLE;
+ mtd_part++;
+ names += PART_NAME_LEN;
+
+ strncpy(names, "partition_table", PART_NAME_LEN);
+ mtd_part->name = names;
+ mtd_part->offset = offset;
+ mtd_part->size = blocklen;
+ mtd_part->mask_flags = MTD_WRITEABLE;
+ mtd_part++;
+ names += PART_NAME_LEN;
+
+ for (i = 0; i < MYLO_MAX_PARTITIONS; i++) {
+ part = &tab->partitions[i];
+
+ if (le16_to_cpu(part->type) == PARTITION_TYPE_FREE)
+ continue;
+
+ if ((buf->names[i][0]) && (buf->names[i][0] != '\xff'))
+ strncpy(names, buf->names[i], PART_NAME_LEN);
+ else
+ snprintf(names, PART_NAME_LEN, "partition%d", i);
+
+ mtd_part->offset = le32_to_cpu(part->addr);
+ mtd_part->size = le32_to_cpu(part->size);
+ mtd_part->name = names;
+ mtd_part++;
+ names += PART_NAME_LEN;
+ }
+
+ *pparts = mtd_parts;
+ ret = num_parts;
+
+ out_free_buf:
+ vfree(buf);
+ out:
+ return ret;
+}
+
+static struct mtd_part_parser myloader_mtd_parser = {
+ .owner = THIS_MODULE,
+ .parse_fn = myloader_parse_partitions,
+ .name = "MyLoader",
+};
+
+static int __init myloader_mtd_parser_init(void)
+{
+ register_mtd_parser(&myloader_mtd_parser);
+
+ return 0;
+}
+
+static void __exit myloader_mtd_parser_exit(void)
+{
+ deregister_mtd_parser(&myloader_mtd_parser);
+}
+
+module_init(myloader_mtd_parser_init);
+module_exit(myloader_mtd_parser_exit);
+
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_DESCRIPTION("Parsing code for MyLoader partition tables");
+MODULE_LICENSE("GPL v2");