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author | Hauke Mehrtens <hauke@hauke-m.de> | 2017-10-29 19:32:10 +0100 |
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committer | Hauke Mehrtens <hauke@hauke-m.de> | 2017-12-16 22:11:19 +0100 |
commit | b3f95490b9bec020314eb32016988ee262d52884 (patch) | |
tree | f8289c19587108bb3b687575776f559eee6f01fd /target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch | |
parent | a362df6f253e4460504fd870d6a7af40ef86ad70 (diff) | |
download | upstream-b3f95490b9bec020314eb32016988ee262d52884.tar.gz upstream-b3f95490b9bec020314eb32016988ee262d52884.tar.bz2 upstream-b3f95490b9bec020314eb32016988ee262d52884.zip |
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>
Diffstat (limited to 'target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch')
-rw-r--r-- | target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch b/target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch new file mode 100644 index 0000000000..10db289cc9 --- /dev/null +++ b/target/linux/generic/pending-4.14/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch @@ -0,0 +1,56 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Sat, 4 Nov 2017 07:40:23 +0100 +Subject: [PATCH] mtd: spi-nor: support limiting 4K sectors support based on + flash size + +Some devices need 4K sectors to be able to deal with small flash chips. +For instance, w25x05 is 64 KiB in size, and without 4K sectors, the +entire chip is just one erase block. +On bigger flash chip sizes, using 4K sectors can significantly slow down +many operations, including using a writable filesystem. There are several +platforms where it makes sense to use a single kernel on both kinds of +devices. + +To support this properly, allow configuring an upper flash chip size +limit for 4K sectors support. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/mtd/spi-nor/Kconfig ++++ b/drivers/mtd/spi-nor/Kconfig +@@ -39,6 +39,17 @@ config SPI_ASPEED_SMC + and support for the SPI flash memory controller (SPI) for + the host firmware. The implementation only supports SPI NOR. + ++config MTD_SPI_NOR_USE_4K_SECTORS_LIMIT ++ int "Maximum flash chip size to use 4K sectors on (in KiB)" ++ depends on MTD_SPI_NOR_USE_4K_SECTORS ++ default "4096" ++ help ++ There are many flash chips that support 4K sectors, but are so large ++ that using them significantly slows down writing large amounts of ++ data or using a writable filesystem. ++ Any flash chip larger than the size specified in this option will ++ not use 4K sectors. ++ + config SPI_ATMEL_QUADSPI + tristate "Atmel Quad SPI Controller" + depends on ARCH_AT91 || (ARM && COMPILE_TEST) +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -2562,10 +2562,12 @@ static int spi_nor_select_erase(struct s + + #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS + /* prefer "small sector" erase if possible */ +- if (info->flags & SECT_4K) { ++ if ((info->flags & SECT_4K) && (mtd->size <= ++ CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT * 1024)) { + nor->erase_opcode = SPINOR_OP_BE_4K; + mtd->erasesize = 4096; +- } else if (info->flags & SECT_4K_PMC) { ++ } else if ((info->flags & SECT_4K_PMC) && (mtd->size <= ++ CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT * 1024)) { + nor->erase_opcode = SPINOR_OP_BE_4K_PMC; + mtd->erasesize = 4096; + } else |