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ba3ae6a1d4
linux/drivers/mtd
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Cyrille Pitchen ba3ae6a1d4 mtd: spi-nor: add a stateless method to support memory size above 128Mib 
This patch provides an alternative mean to support memory above 16MiB
(128Mib) by replacing 3byte address op codes by their associated 4byte
address versions.

Using the dedicated 4byte address op codes doesn't change the internal
state of the SPI NOR memory as opposed to using other means such as
updating a Base Address Register (BAR) and sending command to enter/leave
the 4byte mode.

Hence when a CPU reset occurs, early bootloaders don't need to be aware
of BAR value or 4byte mode being enabled: they can still access the first
16MiB of the SPI NOR memory using the regular 3byte address op codes.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Tested-by: Vignesh R <vigneshr@ti.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
2017-02-10 13:56:06 +01:00
..
chips mtd: cfi_cmdset_0020: Deinline do_write_buffer, save 5316 bytes 2016-07-09 18:53:33 -07:00
devices mtd: spi-nor: rename SPINOR_OP_* macros of the 4-byte address op codes 2017-02-10 13:55:03 +01:00
lpddr mtd: lpddr: show parent device in sysfs 2015-10-13 09:21:17 -07:00
maps Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
nand mtd: nand: tango: Add standard legalese header 2016-12-01 09:46:31 -08:00
onenand mtd: silence some uninitialized variable warnings 2016-07-09 18:14:39 -07:00
spi-nor mtd: spi-nor: add a stateless method to support memory size above 128Mib 2017-02-10 13:56:06 +01:00
tests mtd: nandbiterrs: Support for NAND biterrors test on platforms without raw write 2016-07-11 08:40:13 +02:00
ubi ubi: fastmap: Fix add_vol() return value test in ubi_attach_fastmap() 2016-10-28 14:48:18 +02:00
afs.c mtd: partitions: make parsers return 'const' partition arrays 2015-12-09 10:21:57 -08:00
ar7part.c mtd: partitions: make parsers return 'const' partition arrays 2015-12-09 10:21:57 -08:00
bcm47xxpart.c mtd: bcm47xxpart: fix parsing first block after aligned TRX 2016-11-22 11:09:48 -08:00
bcm63xxpart.c mtd: bcm63xxpart: give width specifier an 'int', not 'size_t' 2016-03-07 13:13:58 -08:00
cmdlinepart.c mtd: partitions: make parsers return 'const' partition arrays 2015-12-09 10:21:57 -08:00
ftl.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
inftlcore.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
inftlmount.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
Kconfig mtd: bcm63xxpart: Remove dependency on mach-bcm63xx 2016-02-12 10:27:48 -08:00
Makefile mtd: spi-nor: shorten Kconfig naming 2014-04-14 11:23:01 -07:00
mtd_blkdevs.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mtdblock_ro.c
mtdblock.c mtd: mtdblock: remove the needless mtdblks_lock 2015-01-07 12:51:56 -08:00
mtdchar.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mtdconcat.c mtd: create an mtd_ooblayout_ops struct to ease ECC layout definition 2016-04-19 22:05:55 +02:00
mtdcore.c mtd: Allocate bdi objects dynamically 2016-12-01 10:03:17 -08:00
mtdcore.h mtd: partitions: support a cleanup callback for parsers 2015-12-09 14:57:44 -08:00
mtdoops.c
mtdpart.c treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
mtdsuper.c
mtdswap.c mtd: mtdswap: fix spelling mistake "erassure" -> "erasure" 2016-11-22 11:43:52 -08:00
nftlcore.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
nftlmount.c mtd: nftl: reorganize operations in condition check 2015-01-09 15:26:29 -08:00
ofpart.c mtd: partitions: make parsers return 'const' partition arrays 2015-12-09 10:21:57 -08:00
redboot.c mtd: partitions: make parsers return 'const' partition arrays 2015-12-09 10:21:57 -08:00
rfd_ftl.c mtd: remove some duplicative checks 2014-03-10 22:42:25 -07:00
sm_ftl.c treewide: Fix typos in printk 2016-04-18 11:23:24 +02:00
sm_ftl.h
ssfdc.c mtd: Replace if and BUG with BUG_ON 2016-07-09 18:48:54 -07:00