Commit graph

12 commits

Author SHA1 Message Date
Rafał Miłecki
7e88753ace kernel: use add_mtd_partitions() helper when using OpenWrt parsers
This helper uses hierarchical partitions layout following the way
upstream parsers work. It's closer to what we should use when mainlining
our solutions. It also doesn't require hacky casting of struct
mtd_partition to the const.

THIS WILL AFFECT KERNEL PRINTING PARTITIONS IN THE LOG

Something like:
[    3.930158] 0x0000004e0000-0x000001fb0000 : "rootfs_data"
will get replaced by:
[    3.907338] Creating 1 MTD partitions on "rootfs":
[    3.912142] 0x00000031d400-0x000001ded400 : "rootfs_data"

It's important to understand that "rootfs_data" in above example is a
*subpartition* of the "rootfs" now. To get absolute addresses (e.g. for
some debugging purposes) one has to add them to the "rootfs", e.g.
[    3.912548] 0x0000001c2c00-0x000001fb0000 : "rootfs"

(0x1c2c00 + 0x31d400 = 0x4e0000)

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-12-03 11:26:05 +01:00
Rafał Miłecki
e24983e710 kernel: backport 2 mtd partitioning fixes
This improves handling of subpartitions.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-12-03 10:34:12 +01:00
Rafał Miłecki
c87d47aee8 kernel: drop unused arch_split_mtd_part()
No single target/arch uses it and most likely there is no need to make
such a potential code target/arch specific.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-11-24 12:24:02 +01:00
Rafał Miłecki
934edb764d kernel: don't auto-split "firmware" if it has "compatible" DT property
If "compatible" is being used that should trigger a proper parser
directly. It's more reliable thanks to not trying parsers one by one. In
such case partition shouldn't be split automatically to avoid parsing it
twice.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-11-24 08:31:55 +01:00
Rafał Miłecki
4d0431801d kernel: don't export parse_mtd_partitions_by_type() in 4.9 and 4.14
That function isn't used anywhere out of the mtdpart.c & can be static.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-11-20 14:44:01 +01:00
Rafał Miłecki
9b8a955358 kernel: drop mtd_pad_erasesize() helper from 4.9 and 4.14
It has been last used in kernel 3.18 for uimage and squashfs splitters
embedded in the mtdpart.c.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-11-19 13:33:05 +01:00
Rafał Miłecki
c7c4ae35d6 kernel: deprecate support for the generic "linux,part-probe" DT binding
It has been rejected upstream and instead a nice/more generic solution
has been implemented. It's possible now to describe partitions format
using "compatible" DT string.

No OpenWrt target uses "linux,part-probe" anymore, leave it only in case
some forks need it. It will be dropped with support for new kernels.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-11-09 14:57:45 +01:00
Rafał Miłecki
2a598bbaa3 kernel: backport mtd support for subpartitions in DT
This is a new & warm feature that allows nesting partiitons in DT and
mixing their types (e.g. static vs. dynamic). It's very useful for
boards that have most partitions static but some of them require extra
parsing (e.g. a "firmware" partition).

It's required to successfully backport support for new devices using
that new syntax in their DT files.

Since brcm63xx has a custom alternative patch the upstream one is being
reverted for it. The plan is to make brcm63xx use the upstream
implementation.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-27 22:16:24 +02:00
Rafał Miłecki
070693477a kernel: backport mtd patch for minor partitioning cleanup
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-05-12 23:14:07 +02:00
Rafał Miłecki
ac9bcefa3b kernel: use V10 of mtd patchset adding support for "compatible" string
In the commit bde5e7a632 ("kernel: backport mtd implementation for
"compatible" in "partitions" subnode") patches that got accepted into
l2-mtd.git were backported to the kernels 4.9 and 4.14. Unfortunately
there was a regression report, patches were dropped and never reached
4.16.

This commit replaces these pseudo-backports with the latest version
that includes regression fix and futher changes that were requested.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-03-14 15:13:39 +01:00
Rafał Miłecki
bde5e7a632 kernel: backport mtd implementation for "compatible" in "partitions" subnode
This backports upstream support for "compatible" DT property set for the
"partitions" subnode of flash node. It allows specifying how partitions
should be created/parsed. Right now only "fixed-partitions" is
supported.

It should eventually replace our downstream "linux,part-probe" solution.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-01-11 12:07:49 +01:00
Hauke Mehrtens
b3f95490b9 kernel: generic: Add kernel 4.14 support
This adds initial support for kernel 4.14 based on the patches for
kernel 4.9.

In the configuration I deactivated some of the new possible security
features like:
CONFIG_REFCOUNT_FULL
CONFIG_SLAB_FREELIST_HARDENED
CONFIG_SOFTLOCKUP_DETECTOR
CONFIG_WARN_ALL_UNSEEDED_RANDOM

And these overlay FS options are also deactivated:
CONFIG_OVERLAY_FS_INDEX
CONFIG_OVERLAY_FS_REDIRECT_DIR

I activated this:
CONFIG_FORTIFY_SOURCE
CONFIG_POSIX_TIMERS
CONFIG_SLAB_MERGE_DEFAULT
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED

I am not sure if I did the porting correct for the following patches:
target/linux/generic/backport-4.14/020-backport_netfilter_rtcache.patch
target/linux/generic/hack-4.14/220-gc_sections.patch
target/linux/generic/hack-4.14/321-powerpc_crtsavres_prereq.patch
target/linux/generic/pending-4.14/305-mips_module_reloc.patch
target/linux/generic/pending-4.14/611-netfilter_match_bypass_default_table.patch
target/linux/generic/pending-4.14/680-NET-skip-GRO-for-foreign-MAC-addresses.patch

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2017-12-16 22:11:19 +01:00