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9261e7447e
This makes the patches which were just copied in the previous commit apply on top of kernel 4.19. The patches in the backports-4.19 folder were checked if they are really in kernel 4.19 based on the title and only removed if they were found in the upstream kernel. The following additional patches form the pending folder went into upstream Linux 4.19: pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch pending-4.19/190-2-5-e1000e-Fix-wrong-comment-related-to-link-detection.patch pending-4.19/478-mtd-spi-nor-Add-support-for-XM25QH64A-and-XM25QH128A.patch pending-4.19/479-mtd-spi-nor-add-eon-en25qh32.patch pending-4.19/950-tty-serial-exar-generalize-rs485-setup.patch pending-4.19/340-MIPS-mm-remove-mips_dma_mapping_error.patch Bigger changes were introduced to the m25p80 spi nor driver, as far as I saw it in the new code, it now has the functionality provided in this patch: pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch Part of this patch went upstream independent of OpenWrt: hack-4.19/220-gc_sections.patch This patch was reworked to match the changes done upstream. The MIPS DMA API changed a lot, this patch was rewritten to match the new DMA handling: pending-4.19/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch I did bigger manual changes to the following patches and I am not 100% sure if they are all correct: pending-4.19/0931-w1-gpio-fix-problem-with-platfom-data-in-w1-gpio.patch pending-4.19/411-mtd-partial_eraseblock_write.patch pending-4.19/600-netfilter_conntrack_flush.patch pending-4.19/611-netfilter_match_bypass_default_table.patch pending-4.19/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch hack-4.19/211-host_tools_portability.patch hack-4.19/221-module_exports.patch hack-4.19/321-powerpc_crtsavres_prereq.patch hack-4.19/902-debloat_proc.patch This is based on patchset from Marko Ratkaj <marko.ratkaj@sartura.hr> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
109 lines
3.0 KiB
Diff
109 lines
3.0 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Subject: make rootfs split/detection more generic - patch can be moved to generic-2.6 after testing on other platforms
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lede-commit: 328e660b31f0937d52c5ae3d6e7029409918a9df
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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drivers/mtd/Kconfig | 17 +++++++++++++++++
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drivers/mtd/mtdpart.c | 35 +++++++++++++++++++++++++++++++++++
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include/linux/mtd/partitions.h | 2 ++
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3 files changed, 54 insertions(+)
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--- a/drivers/mtd/Kconfig
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+++ b/drivers/mtd/Kconfig
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@@ -11,6 +11,23 @@ menuconfig MTD
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if MTD
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+menu "OpenWrt specific MTD options"
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+
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+config MTD_ROOTFS_ROOT_DEV
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+ bool "Automatically set 'rootfs' partition to be root filesystem"
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+ default y
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+
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+config MTD_SPLIT_FIRMWARE
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+ bool "Automatically split firmware partition for kernel+rootfs"
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+ default y
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+
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+config MTD_SPLIT_FIRMWARE_NAME
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+ string "Firmware partition name"
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+ depends on MTD_SPLIT_FIRMWARE
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+ default "firmware"
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+
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+endmenu
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+
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config MTD_TESTS
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tristate "MTD tests support (DANGEROUS)"
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depends on m
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--- a/drivers/mtd/mtdpart.c
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+++ b/drivers/mtd/mtdpart.c
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@@ -29,11 +29,13 @@
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#include <linux/kmod.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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+#include <linux/magic.h>
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#include <linux/of.h>
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#include <linux/err.h>
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#include <linux/of.h>
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#include "mtdcore.h"
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+#include "mtdsplit/mtdsplit.h"
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/* Our partition linked list */
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static LIST_HEAD(mtd_partitions);
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@@ -53,6 +55,8 @@ struct mtd_part {
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struct list_head list;
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};
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+static void mtd_partition_split(struct mtd_info *master, struct mtd_part *part);
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+
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/*
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* Given a pointer to the MTD object in the mtd_part structure, we can retrieve
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* the pointer to that structure.
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@@ -620,6 +624,7 @@ int mtd_add_partition(struct mtd_info *p
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mutex_unlock(&mtd_partitions_mutex);
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add_mtd_device(&new->mtd);
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+ mtd_partition_split(parent, new);
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mtd_add_partition_attrs(new);
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@@ -698,6 +703,29 @@ int mtd_del_partition(struct mtd_info *m
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}
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EXPORT_SYMBOL_GPL(mtd_del_partition);
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+#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
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+#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
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+#else
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+#define SPLIT_FIRMWARE_NAME "unused"
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+#endif
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+
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+static void split_firmware(struct mtd_info *master, struct mtd_part *part)
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+{
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+}
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+
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+static void mtd_partition_split(struct mtd_info *master, struct mtd_part *part)
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+{
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+ static int rootfs_found = 0;
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+
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+ if (rootfs_found)
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+ return;
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+
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+ if (IS_ENABLED(CONFIG_MTD_SPLIT_FIRMWARE) &&
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+ !strcmp(part->mtd.name, SPLIT_FIRMWARE_NAME) &&
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+ !of_find_property(mtd_get_of_node(&part->mtd), "compatible", NULL))
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+ split_firmware(master, part);
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+}
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+
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/*
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* This function, given a master MTD object and a partition table, creates
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* and registers slave MTD objects which are bound to the master according to
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@@ -729,6 +757,7 @@ int add_mtd_partitions(struct mtd_info *
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mutex_unlock(&mtd_partitions_mutex);
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add_mtd_device(&slave->mtd);
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+ mtd_partition_split(master, slave);
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mtd_add_partition_attrs(slave);
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/* Look for subpartitions */
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parse_mtd_partitions(&slave->mtd, parts[i].types, NULL);
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