mx28evk: Fix warning when CONFIG_ENV_IS_IN_SPI_FLASH is selected
Fabio Estevam
reviewerPATCH v3 1/3 mx28evk: Fix warning when CONFIG_ENV_IS_IN_SPI_FLASH is selected
From: Fabio Estevam <[email protected]>
When building a target with CONFIG_ENV_IS_IN_SPI_FLASH the following warning is seen:
include/configs/mx28evk.h:73:0: warning: "CONFIG_ENV_SIZE" redefined [enabled by default]
Protect the definition of CONFIG_ENV_SIZE to avoid the warning.
---
Change since v2:
- Avoid build breakage for mx28evk and mx28evk_nand targets
include/configs/mx28evk.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
include/configs/mx28evk.h +4 -1
@@ -48,7 +48,11 @@#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1/* Environment */ +#ifndef CONFIG_ENV_IS_IN_SPI_FLASH #define CONFIG_ENV_SIZE (16 * 1024) +#else +#define CONFIG_ENV_SIZE (4 * 1024) +#endif #define CONFIG_ENV_OVERWRITE /* Environment is in MMC */
@@ -70,7 +74,6 @@/* Environemnt is in SPI flash */ #if defined(CONFIG_CMD_SF ) && defined(CONFIG_ENV_IS_IN_SPI_FLASH )#define CONFIG_SYS_REDUNDAND_ENVIRONMENT -#define CONFIG_ENV_SIZE 0x1000/* 4KB */ #define CONFIG_ENV_OFFSET 0x40000/* 256K */ #define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)#define CONFIG_ENV_SECT_SIZE 0x1000
Signature · 1 line
1.8.3.2
Fabio Estevam
reviewerPATCH v3 2/3 mx28evk: Add a target for SPI NOR boot
From: Fabio Estevam <[email protected]>
Introduce 'mx28evk_spi' target which will store the environment variables into SPI NOR, which is useful when booting from SPI NOR.
---
Changes since v2:
- None
boards.cfg | 1 + 1 file changed, 1 insertion(+)
boards.cfg +1 -0
@@ -214,6 +214,7 @@ Active arm arm926ejs mxs freescale mx23evk Active arm arm926ejs mxs freescale mx28evk mx28evk mx28evk:ENV_IS_IN_MMC Fabio Estevam <[email protected]> Active arm arm926ejs mxs freescale mx28evk mx28evk_auart_console mx28evk:MXS_AUART,MXS_AUART_BASE=MXS_UARTAPP3_BASE,ENV_IS_IN_MMC Fabio Estevam <[email protected]> Active arm arm926ejs mxs freescale mx28evk mx28evk_nand mx28evk:ENV_IS_IN_NAND Fabio Estevam <[email protected]> +Active arm arm926ejs mxs freescale mx28evk mx28evk_spi mx28evk:ENV_IS_IN_SPI_FLASH Fabio Estevam <[email protected]> Active arm arm926ejs mxs olimex mx23_olinuxino mx23_olinuxino - Marek Vasut <[email protected]> Active arm arm926ejs mxs ppcag bg0900 bg0900 - Marek Vasut <[email protected]> Active arm arm926ejs mxs sandisk sansa_fuze_plus sansa_fuze_plus - Marek Vasut <[email protected]>
Signature · 1 line
1.8.3.2
Fabio Estevam
reviewerPATCH v3 3/3 mx28evk: Add documentation on how to boot from SPI NOR
In reply to Fabio EstevamFrom: Fabio Estevam <[email protected]>
Explain the necessary steps in order to boot from SPI NOR.
Based on a earlier submission from M?rten Wikman.
---
Changes since v2:
- None
board/freescale/mx28evk/README | 22 +++++++++++++++++++--- doc/README.mxs | 26 ++++++++++++++++++++++++++ 2 files changed, 45 insertions(+), 3 deletions(-)
board/freescale/mx28evk/README +19 -3
@@ -23,11 +23,19 @@ To boot MX28EVK from an SD card, set the boot mode DIP switches as: * VDD 5V: To the left (off) * Hold Button: Down (off) +To boot MX28EVK from SPI NOR flash, set the boot mode DIP switches as: + + * Boot Mode Select: 0 0 1 0 (Boot from SSP2) + * JTAG PSWITCH RESET: To the right (reset disabled) + * Battery Source: Down + * Wall 5V: Up + * VDD 5V: To the left (off) + * Hold Button: Down (off) Environment Storage ------------------- -There are two targets for mx28evk: +There are three targets for mx28evk: "make mx28evk_config" - store environment variables into MMC
@@ -35,12 +43,20 @@ or "make mx28evk_nand_config" - store environment variables into NAND flash +or + +"make mx28evk_spi_config" - store enviroment variables into SPI NOR flash + Choose the target accordingly. Note: The mx28evk board does not come with a NAND flash populated from the factory. It comes with an empty slot (U23), which allows the insertion of a 48-pin TSOP flash device. -Follow the instructions from doc/README.mxs to generate a bootable SD card. +mx28evk does not come with SPI NOR flash populated from the factory either. +It is possible to solder a SOIC memory on U49 or use a DIP8 on J89. +To get SPI communication to work R320, R321,R322 and C178 need to be populated. +Look in the schematics for the proper component values. -Insert the SD card in slot 0, power up the board and U-boot will boot. +Follow the instructions from doc/README.mxs to generate a bootable SD card or +to generate a binary to be flashed into SPI NOR.
doc/README.mxs +26 -0
@@ -23,6 +23,7 @@ Contents 2) Compiling U-Boot for a MXS based board 3) Installation of U-Boot for a MXS based board to SD card 4) Installation of U-Boot into NAND flash on a MX28 based board +5) Installation of U-boot into SPI NOR flash on a MX28 based board 1) Prerequisites ----------------
@@ -262,3 +263,28 @@ There are two possibilities when preparing an image writable to NAND flash. In case the user needs to boot a firmware image bigger than 1Mb, the user has to adjust the "update_nand_firmware_maxsz" variable for the update scripts to work properly. + +5) Installation of U-Boot into SPI NOR flash on a MX28 based board +------------------------------------------------------------------ + +The u-boot.sb file can be directly written to SPI NOR from U-boot prompt. + +Load u-boot.sb into RAM, this can be done in several ways and one way is to use +tftp: + => tftp u-boot.sb 0x42000000 + +Probe the SPI NOR flash: + => sf probe + +(SPI NOR should be succesfully detected in this step) + +Erase the blocks where U-boot binary will be written to: + => sf erase 0x0 0x80000 + +Write u-boot.sb to SPI NOR: + => sf write 0x42000000 0 0x80000 + +Power off the board and set the boot mode DIP switches to boot from the SPI NOR +according to MX28 manual section 12.2.1 (Table 12-2) + +Last step is to power up the board and U-boot should start from SPI NOR.
Signature · 1 line
1.8.3.2
PATCH v3 1/3 mx28evk: Fix warning when CONFIG_ENV_IS_IN_SPI_FLASH is selected
In reply to Fabio EstevamHi Fabio,
Quoted 11 lines · Fabio Estevam
From: Fabio Estevam <[email protected]>
When building a target with
CONFIG_ENV_IS_IN_SPI_FLASHthe following warning is seen:
include/configs/mx28evk.h:73:0: warning: "CONFIG_ENV_SIZE" redefined [enabled by default]Protect the definition of
CONFIG_ENV_SIZEto avoid the warning.Signed-off-by Fabio Estevam <[email protected]>---
Put in my queue to be merged.
Regards,
Stefano
Signature · 5 lines
===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de =====================================================================
PATCH v3 1/3 mx28evk: Fix warning when CONFIG_ENV_IS_IN_SPI_FLASH is selected
In reply to Fabio EstevamQuoted 11 lines · Fabio Estevam
From: Fabio Estevam <[email protected]>
When building a target with
CONFIG_ENV_IS_IN_SPI_FLASHthe following warning is seen:
include/configs/mx28evk.h:73:0: warning: "CONFIG_ENV_SIZE" redefined [enabled by default]Protect the definition of
CONFIG_ENV_SIZEto avoid the warning.Signed-off-by Fabio Estevam <[email protected]>---
Applied to u-boot-imx, thanks !
Best regards,
Stefano Babic
Signature · 5 lines
===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de =====================================================================