Import Turris OS kernel patches

1 files changed, 247 insertions, 0 deletions

diff --git a/nixos/modules/kernel-patches/0047-Add-myloader-partition-table-parser.patch b/nixos/modules/kernel-patches/0047-Add-myloader-partition-table-parser.patch
new file mode 100644
index 0000000..6e9426b
--- /dev/null
+++ b/nixos/modules/kernel-patches/0047-Add-myloader-partition-table-parser.patch
@@ -0,0 +1,247 @@
+From 03cf122501d9458a0eae29e3504c5e55aeac1ca6 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Tue, 27 Sep 2022 16:21:36 +0200
+Subject: [PATCH 47/96] 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>
+---
+ drivers/mtd/parsers/Kconfig    |  16 +++
+ drivers/mtd/parsers/Makefile   |   1 +
+ drivers/mtd/parsers/myloader.c | 181 +++++++++++++++++++++++++++++++++
+ 3 files changed, 198 insertions(+)
+ create mode 100644 drivers/mtd/parsers/myloader.c
+
+diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig
+index 23763d16e4f9..a3f344c27454 100644
+--- 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
+diff --git a/drivers/mtd/parsers/Makefile b/drivers/mtd/parsers/Makefile
+index 2e98aa048278..fbce2f3206df 100644
+--- a/drivers/mtd/parsers/Makefile
++++ b/drivers/mtd/parsers/Makefile
+@@ -3,6 +3,7 @@ obj-$(CONFIG_MTD_AR7_PARTS)		+= ar7part.o
+ obj-$(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
+ ofpart-y				+= ofpart_core.o
+ ofpart-$(CONFIG_MTD_OF_PARTS_BCM4908)	+= ofpart_bcm4908.o
+diff --git a/drivers/mtd/parsers/myloader.c b/drivers/mtd/parsers/myloader.c
+new file mode 100644
+index 000000000000..50ed8b197ed2
+--- /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");
+-- 
+2.37.2
+