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path: root/drivers/mtd
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2019-12-04mtd: Makefile: deep cleanupMiquel Raynal
Move MTD-related lines out of the root Makefile. Put them in their respective directories. Enclose some of these new lines to skip them when building the SPL. MTD core files and some MTD device drivers are compiled in a mtd.o object and included in the final object only if MTD support is required (there are two different symbols for that, one for U-Boot and one for the SPL). Now that all defconfigs have been fixed, we can stop the logic where enabling a command selects the core files to compile. This logic is broken since selecting a symbol with a 'depends on' will not enforce this secondary dependency. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2019-12-04cmd: nand/sf: isolate legacy codeMiquel Raynal
The 'sf' command is not supposed to rely on the MTD stack, but both 'sf' and 'nand' commands use helpers located in mtd_uboot.c. Despite their location, these functions do not depend at all on the MTD stack. This file (drivers/mtd/mtd_uboot.c) is only compiled if CONFIG_MTD is selected, which is inconsistent with the current situation. Solve this by moving these three functions (which are only used by the above two commands) out of mtd_uboot.c and put them in a C file only compiled with cmd/sf.c and cmd/nand.c. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> [trini: Don't export get_part function now] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-12-04mtd: spi: SPI_FLASH_MTD depends on MTDMiquel Raynal
It is already the case that all defconfigs with SPI_FLASH_MTD also declare using MTD, but let's make this consistent and enforce it in Kconfig. Most of the time SPI_FLASH_MTD is used in conjunction with UBI, which already depends on MTD. Suggested-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2019-12-04mtd: nand: add includes in NAND core to avoid warningsMiquel Raynal
Because of the include's game, when some files are compiled for a SPI NAND device, no warning appears. But when it is for a raw NAND device, GCC complains. Fix these warning by including <common.h>. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2019-12-03mtd: rename CONFIG_MTD_DEVICE -> CONFIG_MTDMiquel Raynal
Like in Linux, just use CONFIG_MTD to compile the MTD stack. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2019-12-03mtd: rename CONFIG_MTD -> CONFIG_DM_MTDMiquel Raynal
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 <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> [trini: Add Kconfig files] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-12-03mtd: rename CONFIG_NAND -> CONFIG_MTD_RAW_NANDMiquel Raynal
Add more clarity by changing the Kconfig entry name. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> [trini: Re-run migration, update a few more cases] Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2019-12-03mtd: mtdcore: Drop unused mtd_tableTom Rini
The array 'mtd_table' is unused in the code. Remove this as gcc doesn't always discard unused global variables. Signed-off-by: Tom Rini <trini@konsulko.com>
2019-12-02common: Move old EEPROM functions into a new headerSimon Glass
These functions do not use driver model but are still used. Move them to a new eeprom.h header file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02common: Move command functions out of common.hSimon Glass
Move these functions into the command.h header file which is a better fit. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02common: Move enable/disable_interrupts out of common.hSimon Glass
Move these two functions into the irq_funcs.h header file. Also move interrupt_handler_t as this is used by the irq_install_handler() function. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02common: Move interrupt functions into a new headerSimon Glass
These functions do not use driver model but are fairly widely used in U-Boot. But it is not clear that they will use driver model anytime soon, so we don't want to label them as 'legacy'. Move them to a new irq_func.h header file. Avoid the name 'irq.h' since it is widely used in U-Boot already. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02common: Move ARM cache operations out of common.hSimon Glass
These functions are CPU-related and do not use driver model. Move them to cpu_func.h Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02crc32: Use the crc.h header for crc functionsSimon Glass
Drop inclusion of crc.h in common.h and use the correct header directly instead. With this we can drop the conflicting definition in fw_env.h and rely on the crc.h header, which is already included. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-11-03nand: mxs_nand: add API for switching different BCH layoutsIgor Opaniuk
On i.MX7 in a sake of reducing the disturbances caused by a neighboring cells in the FCB page in the NAND chip, a randomizer is enabled when reading the FCB page by ROM bootloader. Add API for setting BCH to specific layout (and restoring it back) used by ROM bootloader to be able to burn it in a proper way to NAND using nandbcb command. Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com> Signed-off-by: Anti Sullin <anti.sullin@artecdesign.ee> Tested-by: Max Krummenacher <max.krummenacher@toradex.com> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
2019-10-30Merge tag 'u-boot-clk-23Oct2019' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-clk - Add I2C clocks for i.MX6Q CCF driver - Fix check in clk_set_default_parents() - Managed API to get clock from device tree - Fixes for core clock code (including sandbox regression tests)
2019-10-30Merge https://gitlab.denx.de/u-boot/custodians/u-boot-sunxiTom Rini
- H6 dts(i) sync (Clément) - H6 PIO (Icenowy) - Fix pll1 clock calculation (Stefan) - H6 dram, half DQ (Jernej) - A64 OLinuXino eMMC (Sunil)
2019-10-25drivers: nand: brcmnand: fix nand_chip ecc layout structureWilliam Zhang
The current brcmnand driver is based on 4.18 linux kernel which uses mtd_set_ooblayout to set ecc layout. But nand base code in u-boot is from old kernel which does not use this new API and expect nand_chip.ecc.layout structure to be set. This cause nand_scan_tail function running into a bug check if the device has a different oob size than the default ones. This patch ports the brcmstb_choose_ecc_layout function from kernel 4.6.7 that supports the ecc layout struture and replaces the mtd_set_ooblayout method Signed-off-by: William Zhang <william.zhang@broadcom.com> Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
2019-10-25nand: brcm: add BCM6368 supportÁlvaro Fernández Rojas
This adds support for BCM6368, BCM6328, BCM6362 and BCM63268 SoCs. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-10-25spi-nor-ids: Add support for Adesto AT25SL321Fabio Estevam
Add an entry for the Adesto AT25SL321 SPI NOR chip. This SPI NOR chip is found in the Embedded Artist i.MX7ULP COM board. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25mtd: spi: Clean up usage of CONFIG_SPI_FLASH_MTDFrieder Schrempf
Most boards currently use SPI_FLASH_MTD only in U-Boot proper, not in SPL. They often rely on hacks in the board header files to include this option conditionally. To be able to fix this, we previously introduced a separate option SPL_SPI_FLASH_MTD. Therefore we can now adjust the Makefile and change the code in sf_probe.c and sf_internal.h to use CONFIG_IS_ENABLED(SPI_FLASH_MTD). We also need to move all occurences of CONFIG_SPI_FLASH_MTD from the header files to the according defconfigs. The affected boards are socfpga, aristainetos, cm_fx6, display5, ventana, rcar-gen2, dh_imx6 and da850evm. We do this all in one patch to guarantee bisectibility. This change was tested with buildman to make sure it does not introduce any regressions by comparing the resulting binary sizes. Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Acked-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25spi-nor: spi-nor-ids: Add USE_FSR flag for mt25q* and n25q* entryVignesh Raghavendra
n25q* and mt25q* (both 256Mb and 512Mb) flashes support Flag status register that indicates various errors that may be encountered during erase/write operations. Therefore add USE_FSR flag wherever missing. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25spi-nor: spi-nor-ids: Add entries for mt25q variantsVignesh Raghavendra
mt25q* flashes support stateless 4 byte addressing opcodes. Add entries for the same. These flashes have bit 6 set in 5th byte of READ ID response when compared to n25q* variants. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25spi-nor: spi-nor-ids: Disable SPI_NOR_4B_OPCODES for n25q512* and n25q256*Vignesh Raghavendra
Per datasheets of n25q256* and n25q512* not all variants of n25q256* and n25q512* support 4 Byte stateless addressing opcodes. Therefore drop SPI_NOR_4B_OPCODES flag from these entries Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25mtd: spi-nor-core: Replace MTD_SPI_NOR_USE_4K_SECTORS with ↵Vignesh Raghavendra
SPI_FLASH_USE_4K_SECTORS U-Boot uses CONFIG_SPI_FLASH_USE_4K_SECTORS to enable 4K small sector support. Use that instead of MTD_SPI_NOR_USE_4K_SECTORS. Reported-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25mtd: spi-nor-core: Use dev_err for reporting erase/write failuresVignesh Raghavendra
Use dev_err() when reporting reason for erase/write failures so that users can be made aware of the reason for failure. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25mtd: spi: Add a new option SPL_SPI_FLASH_MTD to KconfigFrieder Schrempf
To allow SPI_FLASH_MTD being enabled separately in SPL we add a new option. The only user currently is the stm32mp15_basic board. Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Acked-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25mtd: spi: Kconfig: Imply SPI_FLASH if DM_SPI_FLASHJagan Teki
DM_SPI_FLASH should require spi flash interface code for dm version, so imply SPI_FLASH core by default if any board enabled DM_SPI_FLASH. This overcome the explicit enablement of CONFIG_SPI_FLASH on respective boards when DM_SPI_FLASH being used. Acked-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-25mtd: spi-nor: ids: Add is25wp256 chipJagan Teki
Add is25wp256, chip to spi-nor id table. Tested on SiFive FU540 board. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-10-25mtd: spi: Kconfig: Update CONFIG_SPI_FLASHJagan Teki
1) CONFIG_SPI_FLASH is not just a legacy code, but it has common core code which handle both dm and non-dm spi flash code. So fix the info text to make it clear globally. 2) Since it's flash core it shouldn't depends on legacy SPI, so remove the 'depends on SPI' Cc: Vignesh R <vigneshr@ti.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-10-24mtd: Add TI HyperBus Memory Controller driverVignesh Raghavendra
AM654/J721e has HyperBus Memory Controller that supports HyperFlash and HyperRAM devices. It provides a memory mapped interface to interact with these devices. Add a driver to support the same. Driver calibrates the controller, setups up for MMIO access and probes HyperFlash child node. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Stefan Roese <sr@denx.de>
2019-10-24mtd: cfi_flash: Use CONFIG_SYS_MONITOR_BASE only when definedVignesh Raghavendra
Make use of CONFIG_SYS_MONITOR_BASE only when available to avoid build error when CONFIG_SYS_MONITOR_BASE is not defined. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Reviewed-by: Stefan Roese <sr@denx.de>
2019-10-22drivers: clk: Add a managed API to get clocks from the device-treeJean-Jacques Hiblot
Add devm_clk_get(), devm_clk_get_optional() to get clocks from the device-tree. The clocks is automatically released and the data structure freed when the device is unbound. Also add devm_clk_put() to release the clock and free the data structure manually. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-10-16ubi: Print skip_check in ubi_dump_vol_info()Stefan Roese
It might be interesting, if "skip_check" is set or not, so lets print this flag in ubi_dump_vol_info() as well. hs: fix typo in commit message Signed-off-by: Stefan Roese <sr@denx.de> Cc: Quentin Schulz <quentin.schulz@bootlin.com> Cc: Boris Brezillon <boris.brezillon@bootlin.com> Cc: Heiko Schocher <hs@denx.de> Reviewed-by: Heiko Schocher <hs@denx.de>
2019-10-16ubi: provide a way to skip CRC checksQuentin Schulz
Some users of static UBI volumes implement their own integrity check, thus making the volume CRC check done at open time useless. For instance, this is the case when one use the ubiblock + dm-verity + squashfs combination, where dm-verity already checks integrity of the block device but this time at the block granularity instead of verifying the whole volume. Skipping this test drastically improves the boot-time. Adapted to U-Boot by Stefan Roese. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Heiko Schocher <hs@denx.de> Cc: Quentin Schulz <quentin.schulz@bootlin.com> Cc: Boris Brezillon <boris.brezillon@bootlin.com>
2019-10-08spl: Allow tiny printf() to be controlled in SPL and TPLSimon Glass
At present there is only one control for this and it is used for both SPL and TPL. But SPL might have a lot more space than TPL so the extra cost of a full printf() might be acceptable. Split the option into two, providing separate SPL and TPL controls. The TPL setting defaults to the same as SPL. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-09-16mtd: spi-nor: enable protection ops for SST26 flash seriesEugeniy Paltsev
Commit c4e8862308d4 (mtd: spi: Switch to new SPI NOR framework) performs switch from previous 'spi_flash' infrastructure without proper testing/investigations which results in a regressions for SST26 flash series. Enable protection ops for SST26 flash series which were previously enabled by Commit 3d4fed87a5fa (mtd: sf: Add support of sst26wf* flash ICs protection ops) Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-09-16mtd: spi-nor: add missing SST26* flash IC protection opsEugeniy Paltsev
Commit c4e8862308d4 (mtd: spi: Switch to new SPI NOR framework) performs switch from previous 'spi_flash' infrastructure without proper testing/investigations which results in a regressions for SST26 flash series. Add missing SST26* flash IC protection ops which were introduced previously by Commit 3d4fed87a5fa (mtd: sf: Add support of sst26wf* flash ICs protection ops) Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-09-16mtd: spi: Drop sf.cJagan Teki
spi_write_then_read, will manage to do the respective spi_xfer based on the tx_buf, rx_buf so drop the legacy spi_flash_read/write/cm code. Tested-by: Adam Ford <aford173@gmail.com> #da850-evm Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-09-16mtd: spi_dataflash: Use spi read then writeJagan Teki
Now, we have spi_write_then_read routine that would handle spi_xfer handling based on the tx_buf and rx_buf parameters. So, replace individual flash read/write/cmd transfer call with spi_write_then_read. Cc: Egnite GmbH <info@egnite.de> Cc: Daniel Gorsulowski <daniel.gorsulowski@esd.eu> Cc: Ilko Iliev <iliev@ronetix.at> Cc: Marek Vasut <marex@denx.de> Cc: Mateusz Kulikowski <mateusz.kulikowski@gmail.com> Cc: Alison Wang <alison.wang@nxp.com> Tested-by: Adam Ford <aford173@gmail.com> #da850-evm Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-08-25mtd: nand: raw: Move CONFIG_SYS_NAND_USE_FLASH_BBT to KconfigStefan Roese
Convert CONFIG_SYS_NAND_USE_FLASH_BBT to Kconfig, update defconfigs, headers and whitelist. Please note that this symbol already was used in Kconfig (imply in CONFIG_NAND_ATMEL) which did not work, since this symbol was not available in Kconfig. This changes now with this patch and all boards with CONFIG_NAND_ATMEL will have BBT enabled. Which is what I also need on my GARDENA AT91SAM based board. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Eugen Hristev <eugen.hristev@microchip.com> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Gregory CLEMENT <gregory.clement@bootlin.com> [trini: Rework such that the configs are unchanged to start with] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-08-11env: Rename environment.h to env_internal.hSimon Glass
This file contains lots of internal details about the environment. Most code can include env.h instead, calling the functions there as needed. Rename this file and add a comment at the top to indicate its internal nature. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> [trini: Fixup apalis-tk1.c] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-08-11env: Drop environment.h header file where not neededSimon Glass
This header file is now only used by files that access internal environment features. Drop it from various places where it is not needed. Acked-by: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11env: Move env_get_f() to env.hSimon Glass
Move this function over to the new header file. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-31nand: davinci: avoid out of bounds array accessHeinrich Schuchardt
The array bounds have to be checked before accessing the array element. Identified by cppcheck. Fixes: 67ac6ffaeefb ("mtd: nand: davinci: add opportunity to write keystone U-boot image") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-07-29nand: davinci: add support for driver modelBartosz Golaszewski
Extend the davinci NAND driver to support the driver model. For now this doesn't add any device-tree parsing due to the fact that we can't access the actual nand node on the device-tree - it's a subnode of the aemif device and we don't have an aemif driver on davinci at the moment. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-07-29nand: davinci: make davinci_nand_init() staticBartosz Golaszewski
This function is only used within the driver itself. No need to export it. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-07-27Merge tag 'u-boot-imx-20190719' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-imx u-boot-imx-20190719 - CCF for i.MX6 - nandbcb command to write SPL into NAND - Switch to DM (i.MX28) - Boards: Toradex, engicam, DH - Fixes for i.MX8 - Fixes for i.MX7ULP Travis: https://travis-ci.org/sbabic/u-boot-imx/builds/561147504
2019-07-22mtd: spi: Add micron mt35xu512aba and mt35xu02g flash IDAshish Kumar
mt35xu512aba and mt35xu02g suports Single I/O and OCTAL I/O also enable use of SPI_NOR_4B_OPCODES. These flashes are tested on LX2160ARDB and LS1028ARDB respectively Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com> Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com> [jagan: suffix 'ba' on part name and update commit message] Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-19i.MX6: nand: add nandbcb command for imxShyam Saini
Writing/updating boot image in nand device is not straight forward in i.MX6 platform and it requires boot control block(BCB) to be configured. It becomes difficult to use uboot 'nand' command to write BCB since it requires platform specific attributes need to be taken care of. It is even difficult to use existing msx-nand.c driver by incorporating BCB attributes like mxs_dma_desc does because it requires change in mtd and nand command. So, cmd_nandbcb implemented in arch/arm/mach-imx BCB contains two data structures, Firmware Configuration Block(FCB) and Discovered Bad Block Table(DBBT). FCB has nand timings, DBBT search area, page address of firmware. On summary, nandbcb update will - erase the entire partition - create BCB by creating 2 FCB/DBBT block followed by 1 FW block based on partition size and erasesize. - fill FCB/DBBT structures - write FW/SPL on FW1 - write FCB/DBBT in first 2 blocks for nand boot, up on reset bootrom look for FCB structure in first block's if FCB found the nand timings are loaded for further reads. once FCB read done, DTTB will load and finally firmware will be loaded which is boot image. Refer section "NAND Boot" from doc/imx/common/imx6.txt for more usage information. Reviewed-by: Stefano Babic <sbabic@denx.de> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Sergey Kubushyn <ksi@koi8.net> Signed-off-by: Shyam Saini <shyam.saini@amarulasolutions.com>
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