u-boot.git/include/flash.h, branch v2022.01

flash.h: Remove CONFIG_SYS_FLASH_CFI from flash_info_t

2021-08-11T08:36:10+00:00

Those embers wrapped with CONFIG_SYS_FLASH_CFI in struct flash_info_t
are unconditionally used in the cfi_flash.c driver.

Drop the #ifdefs in the definition of flash_info_t.

Signed-off-by: Bin Meng 
Reviewed-by: Stefan Roese

cfi_flash: Fix detection of 8-bit bus flash devices via address shift

2021-04-06T06:55:53+00:00

We had a problem detecting 8/16bit flash devices connected only via
8bits to the SoC for quite a while. Commit 239cb9d9
[mtd: cfi_flash: Fix CFI flash driver for 8-bit bus support] finally
fixed this 8-bit bus support. But also broke some other boards using
this cfi driver. So this patch had to be reverted.

I spotted a different, simpler approach for this 8-bit bus support
on the barebox mailing list posted by
Oleksij Rempel :

http://www.spinics.net/lists/u-boot-v2/msg14687.html

Here the commit text:

"
Many cfi chips support 16 and 8 bit modes. Most important
difference is use of so called "Q15/A-1" pin. In 16bit mode this
pin is used for data IO. In 8bit mode, it is an address input
which add one more least significant bit (LSB). In this case
we should shift all adresses by one:
For example 0xaa << 1 = 0x154
"

This patch now is a port of this barebox patch to U-Boot.

Along with the change w.r.t from barebox,
Some flash chips can support multiple bus widths, override the
interface width and limit it to the port width.

Tested on 16-bit Spansion flash on sequoia.
Tested 8-bit flashes like 256M29EW, 512M29EW.

Signed-off-by: Stefan Roese 
Tested-by: Jagannadha Sutradharudu Teki 
Cc: Jagannadha Sutradharudu Teki 
Cc: Aaron Williams 
Cc: Chandrakala Chavva 
Cc: Andre Przywara 
Cc: Vignesh Raghavendra 
Cc: Simon Glass 
Cc: Mario Six 
Cc: York Sun 
Cc: Marek Vasut

flash: Tidy up coding style for flash functions

2020-05-18T18:53:28+00:00

Some functions use the wrong code style and generate checkpatch errors.
Fix these.

Signed-off-by: Simon Glass

common: Move flash_perror() to flash.h

2020-01-17T18:26:48+00:00

This function belongs more in flash.h than common.h so move it.

Also remove the space before the bracket in some calls.

Signed-off-by: Simon Glass

mtd: rename CONFIG_MTD -> CONFIG_DM_MTD

2019-12-04T04:04:10+00:00

CONFIG_MTD must be reserved for the MTD core. Like any other
subsystem, prefix the symbol by DM when it comes to DM support.

Signed-off-by: Miquel Raynal 
Reviewed-by: Boris Brezillon 
[trini: Add Kconfig files]
Signed-off-by: Tom Rini

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

flash: Fix spelling of "ERR_TIMOUT"

2018-01-29T06:48:59+00:00

checkpatch.pl complains about the spelling of ERR_TIMOUT. Since the
error is only used in a handful of files, we rename the error to
ERR_TIMEOUT.

Signed-off-by: Mario Six 
Signed-off-by: Stefan Roese

mtd: cfi: Add support for status register polling

2017-09-26T08:57:53+00:00

The status register is optional in the AMD command sets, but it's
presence can be checked by reading out CFI table entry 0xc bit 0.
If the register is present, prefer using it's bit 7 to determine
if the flash is busy over reading the flash ; this is needed ie.
on Hyperflash memories.

Signed-off-by: Marek Vasut 
Signed-off-by: Stefan Roese

mtd: cfi: Zap cfi_flash_base in DM case

2017-09-26T08:57:53+00:00

Embed the flash base into struct flash_info instead of having ad-hoc
static array in the code. This does not only remove static variable,
but also allows CFI-like controllers, ie. HyperFlash ones, to use most
of the CFI flash code by populating the flash_info with matching base
address.

Signed-off-by: Marek Vasut 
Signed-off-by: Stefan Roese

mtd: cfi: staticize functions

2017-08-22T07:56:09+00:00

Staticize a few functions and variables which are no longer exposed.

Signed-off-by: Marek Vasut 
Cc: Stefan Roese 
Signed-off-by: Stefan Roese