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13 commits

Author SHA1 Message Date
Andre Przywara
7b82a229e5 sunxi: prepare for sharing MACH_SUN8I_H3 config symbol
The Allwinner H5 is very close to the H3 SoC, but has ARMv8 cores.
To allow sharing the clocks, GPIO and driver code easily, create an
architecture agnostic MACH_SUNXI_H3_H5 Kconfig symbol.
Rename the existing symbol to MACH_SUNXI_H3_H5 where code is shared and
let it be selected by a new shared Kconfig option.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-04-05 15:03:17 +05:30
Siarhei Siamashka
19e99fb4ff sunxi: Support booting from SPI flash
Allwinner devices support SPI flash as one of the possible
bootable media type. The SPI flash chip needs to be connected
to SPI0 pins (port C) to make this work. More information is
available at:

    https://linux-sunxi.org/Bootable_SPI_flash

This patch adds the initial support for booting from SPI flash.
The existing SPI frameworks are not used in order to reduce the
SPL code size. Right now the SPL size grows by ~370 bytes when
CONFIG_SPL_SPI_SUNXI option is enabled.

While there are no popular Allwinner devices with SPI flash at
the moment, testing can be done using a SPI flash module (it
can be bought for ~2$ on ebay) and jumper wires with the boards,
which expose relevant pins on the expansion header. The SPI flash
chips themselves are very cheap (some prices are even listed as
low as 4 cents) and should not cost much if somebody decides to
design a development board with an SPI flash chip soldered on
the PCB.

Another nice feature of the SPI flash is that it can be safely
accessed in a device-independent way (since we know that the
boot ROM is already probing these pins during the boot time).
And if, for example, Olimex boards opted to use SPI flash instead
of EEPROM, then they would have been able to have U-Boot installed
in the SPI flash now and boot the rest of the system from the SATA
hard drive. Hopefully we may see new interesting Allwinner based
development boards in the future, now that the software support
for the SPI flash is in a better shape :-)

Testing can be done by enabling the CONFIG_SPL_SPI_SUNXI option
in a board defconfig, then building U-Boot and finally flashing
the resulting u-boot-sunxi-with-spl.bin binary over USB OTG with
a help of the sunxi-fel tool:

   sunxi-fel spiflash-write 0 u-boot-sunxi-with-spl.bin

The device needs to be switched into FEL (USB recovery) mode first.
The most suitable boards for testing are Orange Pi PC and Pine64.
Because these boards are cheap, have no built-in NAND/eMMC and
expose SPI0 pins on the Raspberry Pi compatible expansion header.
The A13-OLinuXino-Micro board also can be used.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-07-15 08:34:34 +02:00
Marek Vasut
0a02655481 sf: Make 4K sector support configurable
Make the support for 4K subpage I/O on a SPI NOR flash configurable.
A board which requires the SPI NOR to be accessed in larger 32KiB
or 64KiB pages can disable the 4K subpage support, but by default,
the support for 4K subpage I/O is enabled. The functionality of this
option is the same as CONFIG_MTD_SPI_NOR_USE_4K_SECTORS in Linux.

This is extremely useful in case one uses UBI on a SPI NOR flash.
UBI needs at least 15k EBs and can not work on a flash which uses
4k ones, so disabling the support for 4k subpages lets UBI work on
such flash.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jteki@openedev.com>
2015-08-17 15:59:48 +05:30
Nikita Kiryanov
d5af92315b sf: kconfig: add kconfig options for spi flashes
Add kconfig options for various SPI flashes and use them in cm-fx6 defconfig.

Cc: Jagan Teki <jteki@openedev.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
2015-08-02 10:51:39 +02:00
Jagan Teki
84d31b3b8f sf: Kconfig: Add SPI_FLASH_BAR entry
Added SPI_FLASH_BAR entry on Kconfig with help description

Signed-off-by: Jagan Teki <jteki@openedev.com>
2015-07-01 21:39:06 +05:30
Jagan Teki
cd9accdcd9 sf: Kconfig: Add SPI_FLASH_DATAFLASH entry
Added SPI_FLASH_DATAFLASH entry on Kconfig with help description.

data flash driver comes with good decription, hence moved the
same on to kconfig help decription.

Signed-off-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Haikun Wang <haikun.wang@freescale.com>
2015-07-01 21:22:19 +05:30
Jagan Teki
7678dd93ec sf: Kconfig: Add SPI_FLASH_MTD entry
Added SPI_FLASH_MTD entry on Kconfig with help description.

Signed-off-by: Jagan Teki <jteki@openedev.com>
Acked-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
2015-07-01 21:15:04 +05:30
Jagan Teki
2ce7e2b6fc sf: Kconfig: Update SPI_FLASH entry
Updated SPI_FLASH entry on Kconfig with depends on
and along with config help description.

Signed-off-by: Jagan Teki <jteki@openedev.com>
2015-07-01 21:15:04 +05:30
Jagan Teki
810fd69672 sf: Add Kconfig menu entry
Added Kconfig menu ... endmenu enties for spi flash suppor

Signed-off-by: Jagan Teki <jteki@openedev.com>
2015-07-01 21:15:04 +05:30
Joe Hershberger
22e04faaab mtd: spi: Add the SPI_FLASH config to Kconfig
This config needs to be available in the Kconfig to allow it to be
removed from arch defaults.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-06-25 17:04:43 -04:00
Simon Glass
949dd81b43 sandbox: Move CONFIG_SPI_FLASH_SANDBOX to Kconfig
Move this over to Kconfig and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-18 11:11:38 -06:00
Masahiro Yamada
b3d023b405 dm: spi_flash: fix wrong dependency
CONFIG_SPI does not exist in Kconfig in the first place, so the
dependency "depends on DM && SPI" is never met, i.e., DM_SPI_FLASH
can never be enabled (unless you ignore the dependency in an illegal
way.  See below.)

Actually, some defconfigs such as socfpga_*_defconfig define
CONFIG_DM_SPI_FLASH=y, but it never appears in the .config file
because of this wrong dependency.

On the other hand, all the Tegra boards enable DM_SPI_FLASH because

  config DM_SPI_FLASH
          default y

silently ignores the dependency.
Unfortunately, this style of CONFIG definition is abused everywhere
in U-Boot, so we easily miss such a wrong dependency.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-04-18 11:11:30 -06:00
Simon Glass
f94a1bed07 dm: Expand and complete Kconfig in drivers/
Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-12 10:35:33 -07:00