[U-Boot] [PATCH v3 1/3] mx28evk: Fix warning when CONFIG_ENV_IS_IN_SPI_FLASH is selected
From: Fabio Estevam fabio.estevam@freescale.com
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.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- Change since v2: - Avoid build breakage for mx28evk and mx28evk_nand targets
include/configs/mx28evk.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/configs/mx28evk.h b/include/configs/mx28evk.h index 9b9124a..9daa0bf 100644 --- a/include/configs/mx28evk.h +++ b/include/configs/mx28evk.h @@ -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
From: Fabio Estevam fabio.estevam@freescale.com
Introduce 'mx28evk_spi' target which will store the environment variables into SPI NOR, which is useful when booting from SPI NOR.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- Changes since v2: - None
boards.cfg | 1 + 1 file changed, 1 insertion(+)
diff --git a/boards.cfg b/boards.cfg index fd4324d..dbee7f6 100644 --- a/boards.cfg +++ b/boards.cfg @@ -214,6 +214,7 @@ Active arm arm926ejs mxs freescale mx23evk Active arm arm926ejs mxs freescale mx28evk mx28evk mx28evk:ENV_IS_IN_MMC Fabio Estevam fabio.estevam@freescale.com Active arm arm926ejs mxs freescale mx28evk mx28evk_auart_console mx28evk:MXS_AUART,MXS_AUART_BASE=MXS_UARTAPP3_BASE,ENV_IS_IN_MMC Fabio Estevam fabio.estevam@freescale.com Active arm arm926ejs mxs freescale mx28evk mx28evk_nand mx28evk:ENV_IS_IN_NAND Fabio Estevam fabio.estevam@freescale.com +Active arm arm926ejs mxs freescale mx28evk mx28evk_spi mx28evk:ENV_IS_IN_SPI_FLASH Fabio Estevam fabio.estevam@freescale.com Active arm arm926ejs mxs olimex mx23_olinuxino mx23_olinuxino - Marek Vasut marek.vasut@gmail.com Active arm arm926ejs mxs ppcag bg0900 bg0900 - Marek Vasut marex@denx.de Active arm arm926ejs mxs sandisk sansa_fuze_plus sansa_fuze_plus - Marek Vasut marek.vasut@gmail.com
From: Fabio Estevam fabio.estevam@freescale.com
Explain the necessary steps in order to boot from SPI NOR.
Based on a earlier submission from Mårten Wikman.
Signed-off-by: Mårten Wikman marten.wikman@novia.fi Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- Changes since v2: - None
board/freescale/mx28evk/README | 22 +++++++++++++++++++--- doc/README.mxs | 26 ++++++++++++++++++++++++++ 2 files changed, 45 insertions(+), 3 deletions(-)
diff --git a/board/freescale/mx28evk/README b/board/freescale/mx28evk/README index 0389a1d..958ebc6 100644 --- a/board/freescale/mx28evk/README +++ b/board/freescale/mx28evk/README @@ -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. diff --git a/doc/README.mxs b/doc/README.mxs index 0235a5a..ed2e568 100644 --- a/doc/README.mxs +++ b/doc/README.mxs @@ -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.
Hi Fabio,
On 10/06/2014 05:03, Fabio Estevam wrote:
From: Fabio Estevam fabio.estevam@freescale.com
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.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com
Put in my queue to be merged.
Regards, Stefano
On 10/06/2014 05:03, Fabio Estevam wrote:
From: Fabio Estevam fabio.estevam@freescale.com
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.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com
Applied to u-boot-imx, thanks !
Best regards, Stefano Babic
participants (2)
-
Fabio Estevam -
Stefano Babic