u-boot.git/include/mtd/cfi_flash.h, branch v2023.07.01

global: Move remaining CONFIG_SYS_* to CFG_SYS_*

2022-12-05T21:06:08Z

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini Reviewed-by: Simon Glass

Audit inclusion

2022-08-04T20:18:47Z

A large number of files include as it used to be how various SPI flash related functions were found, or for other reasons entirely. In order to migrate some further CONFIG symbols to Kconfig we need to not include flash.h in cases where we don't have a NOR flash of some sort enabled. Furthermore, in cases where we are in common code and it doesn't make sense to try and further refactor the code itself in to new files we need to guard this inclusion. Signed-off-by: Tom Rini

mtd: cfi: change CONFIG_SYS_MAX_FLASH_BANKS_DETECT as boolean

2022-01-21T19:01:35Z

Prepare migration to Kconfig. CONFIG_SYS_MAX_FLASH_BANKS_DETECT becomes boolean and CONFIG_SYS_MAX_FLASH_BANKS define the MAX size, also used for detection when CONFIG_SYS_MAX_FLASH_BANKS_DETECT=y (CFI_MAX_FLASH_BANKS = CONFIG_SYS_MAX_FLASH_BANKS). CONFIG_SYS_MAX_FLASH_BANKS become mandatory when CONFIG_SYS_MAX_FLASH_BANKS_DETECT is activated. Signed-off-by: Patrick Delaunay Reviewed-by: Stefan Roese

mtd: cfi: introduce CFI_FLASH_BANKS

2022-01-21T19:01:35Z

Replace CONFIG_SYS_MAX_FLASH_BANKS by CFI_FLASH_BANKS to prepare Kconfig migration and avoid to redefine CONFIG_SYS_MAX_FLASH_BANKS in cfi_flash.h. After this patch CONFIG_SYS_MAX_FLASH_BANKS should be never used in the cfi code: use CFI_MAX_FLASH_BANKS for struct size or CFI_FLASH_BANKS for number of CFI banks which can be dynamic. This patch modify all the files which include mtd/cfi_flash.h. Signed-off-by: Patrick Delaunay Reviewed-by: Stefan Roese

mtd: cfi_flash: use cfi_flash_num_flash_banks only when supported

2021-09-28T12:35:19Z

When CONFIG_SYS_MAX_FLASH_BANKS_DETECT is activated, CONFIG_SYS_MAX_FLASH_BANKS is replaced by cfi_flash_num_flash_banks, but this variable is defined in drivers/mtd/cfi_flash.c, which is compiled only when CONFIG_FLASH_CFI_DRIVER is activated, in U-Boot or in SPL when CONFIG_SPL_MTD_SUPPORT is activated. This patch deactivates this feature CONFIG_SYS_MAX_FLASH_BANKS_DETECT when flash cfi driver is not activated to avoid compilation issue in the next patch, when CONFIG_SYS_MAX_FLASH_BANKS is used in spi_nor_scan(). Signed-off-by: Patrick Delaunay

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

2018-05-07T13:34:12Z

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

mtd: cfi: Add support for status register polling

2017-09-26T08:57:53Z

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: staticize functions

2017-08-22T07:56:09Z

Staticize a few functions and variables which are no longer exposed. Signed-off-by: Marek Vasut Cc: Stefan Roese Signed-off-by: Stefan Roese

cfi_flash: use specific width types for cword

2015-10-27T10:51:53Z

This patch changes the cword union to use specific length types that are architecture indepented. This patch also renames the members of the cword union to represent their usage, i.e.: c -> w8 s -> w16 l -> w32 ll -> w64 Where "w" stands for "width" in bits. I discovered this problem when enabling CFI flash on vexpress64. cword.l was an unsigned long int, but it was intended to be 32 bits wide. Unfortunately, it's 64-bits wide on a 64-bit system, meaning that a 64-bit system fails when attempting to use 32-bit wide CFI flash parts. Similar problems also existed with the other cword sizes. Signed-off-by: Ryan Harkin Reviewed-by: Linus Walleij Signed-off-by: Stefan Roese

cfi_flash: Add prototypes of overridable functions

2013-07-30T07:11:54Z

This commit adds some prototypes into include/mtd/cfi_flash.h. These functions are defined with a weak attribute in drivers/mtd/cfi_flash.c. This means they can be overrided by board-specific ones if necessary. When defining such functions under board/ directory or somewhere, cfi_flash.h should be included. This makes sure that board-specfic cfi functions are defined in a correct prototype. Signed-off-by: Masahiro Yamada Signed-off-by: Stefan Roese