Commit graph

21 commits

Author SHA1 Message Date
Wolfgang Denk
3765b3e7bd Coding Style cleanup: remove trailing white space
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-10-14 16:06:53 -04:00
Jagannadha Sutradharudu Teki
ce22b922dd sf: Minor cleanups
- Add spaces, tabs
- Commenting.
- Rearrange code.
- Add static qualifier for missing func.
- Remove memory_map from ramtron.c
- Ramtron: spi_flash_internal.h -> sf_internal.h

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 19:34:56 +05:30
Jagannadha Sutradharudu Teki
a5e8199a13 sf: spi_flash cleanups
More cleanups on spi_flash side:
- Removed unneeded comments.
- Rearranged macros in proper location.
- Rearranged func declerations
- Renamed few function names.
- Added License headers.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 17:55:49 +05:30
Jagannadha Sutradharudu Teki
30b0ca6318 sf: Remove spi_flash_do_alloc references
Added a support for common probe, hence removed removed
spi_flash_do_alloc reference.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 17:55:49 +05:30
Jagannadha Sutradharudu Teki
7ab35d922d sf: Add proper comment style on spi_flash structure
Added proper comment style on spi_flash structure to make
more readable.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 17:55:46 +05:30
Jagannadha Sutradharudu Teki
0f6232801c sf: probe: Add support for flag status polling
From Micron, 512MB onwards, flash requires to poll flag status
instead of read status- hence added E_FSR flag on spectific
flash parts.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 17:55:45 +05:30
Jagannadha Sutradharudu Teki
f4f51a8ff8 sf: probe: Add support for erase sector selection flag
SECT_4K, SECT_32K and SECT_64K opeartions are performed to
to specific flash by adding a SECT* flag on respective
spi_flash_params.flag param.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 17:55:45 +05:30
Jagannadha Sutradharudu Teki
10ca45d005 sf: probe: Add support for SST_WP
Most of the SST flashes needs to write up using SST_WP, AAI
Word Program, so added a flag param on spi_flash_params table.

SST flashes, which supports SST_WP need to use a WP write
sst_write_wp instead of common flash write.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-10-07 17:55:44 +05:30
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Jagannadha Sutradharudu Teki
615a156167 sf: Add flag status register polling support
Flag status register polling is required for micron 512Mb flash
devices onwards, for performing erase/program operations.

Like polling for WIP(Write-In-Progress) bit in read status register,
spi_flash_cmd_wait_ready will poll for PEC(Program-Erase-Control)
bit in flag status register.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2013-06-23 22:02:51 +05:30
Jagannadha Sutradharudu Teki
1dcd6d0381 sf: Add bank addr code in CONFIG_SPI_FLASH_BAR
Defined bank addr code on CONFIG_SPI_FLASH_BAR macro, to reduce the
size for existing boards which has < 16Mbytes SPI flashes.

It's upto user which has provision to use the bank addr code for
flashes which has > 16Mbytes.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2013-06-23 22:02:50 +05:30
Jagannadha Sutradharudu Teki
e612ddf593 sf: Read flash bank addr register at probe time
Read the flash bank addr register to get the state of bank in
a perticular flash. and also bank write happens only when there is
a change in bank selection from user.

bank read only valid for flashes which has > 16Mbytes those are
opearted in 3-byte addr mode, each bank occupies 16Mytes.

Suppose if the flash has 64Mbytes size consists of 4 banks like
bank0, bank1, bank2 and bank3.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2013-06-23 22:02:50 +05:30
Jagannadha Sutradharudu Teki
cf6b11dcda sf: Discover the bank addr commands
Bank/Extended addr commands are specific to particular
flash vendor so discover them based on the idocode0.

Assign the discovered bank commands to spi_flash members
so-that the bank read/write will use their specific operations.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
2013-06-23 22:02:49 +05:30
Simon Glass
bb8215f437 sf: Enable FDT-based configuration and memory mapping
Enable device tree control of SPI flash, and use this to implement
memory-mapped SPI flash, which is supported on Intel chips.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-19 08:45:37 -07:00
Simon Glass
b5aec1424d sf: Add spi_flash_alloc() to create a new SPI flash struct
At present it is difficult to extend the SPI flash structure since
all devices allocate it themselves, and few of them zero all fields.
Add a new function spi_flash_alloc() which can be used by SPI devices
to perform this allocation, and thus ensure that all devices can
better cope with SPI structure changes.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-19 08:45:36 -07:00
Christian Riesch
32b1127397 sf: Add spi_boot() to allow booting from SPI flash in an SPL
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Heiko Schocher <hs@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Scott Wood <scottwood@freescale.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-12-24 10:23:30 +01:00
Mike Frysinger
d4aa500913 sf: unify write funcs
Once we add a new page_size field for write lengths, we can unify the
write methods for most of the spi flash drivers.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-26 16:29:27 +02:00
Richard Retanubun
4e6a515899 sf: add struct spi_flash.sector_size parameter
This patch adds a new member to struct spi_flash (u16 sector_size)
and updates the spi flash drivers to start populating it.

This parameter can be used by spi flash commands that need to round
up units of operation to the flash's sector_size.

Having this number in one place also allows duplicated code to be
further collapsed into one common location (such as erase parameter
and the detected message).

Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-12 02:15:37 -04:00
Mike Frysinger
192b639ecc sf: punt unused spi_flash_region struct
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-04-11 23:40:59 -04:00
Mike Frysinger
e06ab6546b spi_flash.h: pull in linux/types.h for u## types 2009-11-24 23:40:39 +01:00
Haavard Skinnemoen
d25ce7d24c SPI Flash subsystem
This adds a new SPI flash subsystem.

Currently, only AT45 DataFlash in non-power-of-two mode is supported,
but some preliminary support for other flash types is in place as
well.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-03 20:31:34 +02:00