diff options
| -rw-r--r-- | target/linux/ar71xx/mikrotik/config-default | 1 | ||||
| -rw-r--r-- | target/linux/generic/config-4.9 | 1 | ||||
| -rw-r--r-- | target/linux/generic/pending-4.9/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch | 56 | ||||
| -rw-r--r-- | target/linux/layerscape/armv8_32b/config-4.9 | 1 | ||||
| -rw-r--r-- | target/linux/layerscape/armv8_64b/config-4.9 | 1 | ||||
| -rw-r--r-- | target/linux/pistachio/config-4.9 | 1 | ||||
| -rw-r--r-- | target/linux/ramips/mt7620/config-4.9 | 1 | ||||
| -rw-r--r-- | target/linux/ramips/rt305x/config-4.9 | 1 | ||||
| -rw-r--r-- | target/linux/ramips/rt3883/config-4.9 | 1 |
9 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/ar71xx/mikrotik/config-default b/target/linux/ar71xx/mikrotik/config-default index 42f9882bb2..284274e41f 100644 --- a/target/linux/ar71xx/mikrotik/config-default +++ b/target/linux/ar71xx/mikrotik/config-default @@ -232,6 +232,7 @@ CONFIG_MTD_NAND_RB750=y CONFIG_MTD_NAND_RB91X=y # CONFIG_MTD_REDBOOT_PARTS is not set CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 # CONFIG_MTD_SPLIT_EVA_FW is not set # CONFIG_MTD_SPLIT_TPLINK_FW is not set # CONFIG_MTD_TPLINK_PARTS is not set diff --git a/target/linux/generic/config-4.9 b/target/linux/generic/config-4.9 index 9512e494af..e591ac6655 100644 --- a/target/linux/generic/config-4.9 +++ b/target/linux/generic/config-4.9 @@ -2632,6 +2632,7 @@ CONFIG_MTD_ROOTFS_ROOT_DEV=y # CONFIG_MTD_SPINAND_MT29F is not set # CONFIG_MTD_SPI_NOR is not set # CONFIG_MTD_SPI_NOR_USE_4K_SECTORS is not set +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=4096 CONFIG_MTD_SPLIT=y # CONFIG_MTD_SPLIT_BRNIMAGE_FW is not set # CONFIG_MTD_SPLIT_EVA_FW is not set diff --git a/target/linux/generic/pending-4.9/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch b/target/linux/generic/pending-4.9/470-mtd-spi-nor-support-limiting-4K-sectors-support-base.patch new file mode 100644 index 0000000000..e1c1de3602 --- /dev/null +++ b/target/linux/generic/pending-4.9/470-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 +@@ -29,6 +29,17 @@ config MTD_SPI_NOR_USE_4K_SECTORS + Please note that some tools/drivers/filesystems may not work with + 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). + ++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 +@@ -1642,10 +1642,12 @@ int spi_nor_scan(struct spi_nor *nor, co + + #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 diff --git a/target/linux/layerscape/armv8_32b/config-4.9 b/target/linux/layerscape/armv8_32b/config-4.9 index bb45901171..565cb5d9df 100644 --- a/target/linux/layerscape/armv8_32b/config-4.9 +++ b/target/linux/layerscape/armv8_32b/config-4.9 @@ -841,6 +841,7 @@ CONFIG_MTD_NAND_DENALI_DT=y CONFIG_MTD_NAND_ECC=y CONFIG_MTD_SPI_NOR=y CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 CONFIG_MTD_SST25L=y CONFIG_MTD_UBI=y CONFIG_MTD_UBI_BEB_LIMIT=20 diff --git a/target/linux/layerscape/armv8_64b/config-4.9 b/target/linux/layerscape/armv8_64b/config-4.9 index ea4dba67c0..4432919f4e 100644 --- a/target/linux/layerscape/armv8_64b/config-4.9 +++ b/target/linux/layerscape/armv8_64b/config-4.9 @@ -824,6 +824,7 @@ CONFIG_MTD_NAND_ECC=y CONFIG_MTD_NAND_FSL_IFC=y CONFIG_MTD_SPI_NOR=y CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 CONFIG_MTD_SST25L=y CONFIG_MUTEX_SPIN_ON_OWNER=y CONFIG_MV_XOR_V2=y diff --git a/target/linux/pistachio/config-4.9 b/target/linux/pistachio/config-4.9 index 121f6a8c13..a417a6b064 100644 --- a/target/linux/pistachio/config-4.9 +++ b/target/linux/pistachio/config-4.9 @@ -216,6 +216,7 @@ CONFIG_MTD_SPI_NAND=y CONFIG_MTD_SPI_NAND_DEVICES=y CONFIG_MTD_SPI_NOR=y CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 CONFIG_MTD_UBI=y CONFIG_MTD_UBI_BEB_LIMIT=20 CONFIG_MTD_UBI_BLOCK=y diff --git a/target/linux/ramips/mt7620/config-4.9 b/target/linux/ramips/mt7620/config-4.9 index dc3c8fcc0a..4f8c68629e 100644 --- a/target/linux/ramips/mt7620/config-4.9 +++ b/target/linux/ramips/mt7620/config-4.9 @@ -141,6 +141,7 @@ CONFIG_MTD_NAND_MT7620=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_SPI_NOR=y CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 CONFIG_MTD_SPLIT_FIRMWARE=y CONFIG_MTD_SPLIT_SEAMA_FW=y CONFIG_MTD_SPLIT_TPLINK_FW=y diff --git a/target/linux/ramips/rt305x/config-4.9 b/target/linux/ramips/rt305x/config-4.9 index d7b53038d4..ae843f3720 100644 --- a/target/linux/ramips/rt305x/config-4.9 +++ b/target/linux/ramips/rt305x/config-4.9 @@ -134,6 +134,7 @@ CONFIG_MTD_M25P80=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_SPI_NOR=y CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 CONFIG_MTD_SPLIT_FIRMWARE=y CONFIG_MTD_SPLIT_SEAMA_FW=y CONFIG_MTD_SPLIT_UIMAGE_FW=y diff --git a/target/linux/ramips/rt3883/config-4.9 b/target/linux/ramips/rt3883/config-4.9 index 3e6b73f80c..3b116e560f 100644 --- a/target/linux/ramips/rt3883/config-4.9 +++ b/target/linux/ramips/rt3883/config-4.9 @@ -134,6 +134,7 @@ CONFIG_MTD_M25P80=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_SPI_NOR=y CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y +CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384 CONFIG_MTD_SPLIT_FIRMWARE=y CONFIG_MTD_SPLIT_SEAMA_FW=y CONFIG_MTD_SPLIT_UIMAGE_FW=y |