[U-Boot] [PATCH V3 12/18] arm: mx6: add support for Compulab cm-fx6 CoM

[Igor Grinberg <grinberg@compulab.co.il>]

On 08/13/14 15:55, Igor Grinberg wrote:
> Hi Nikita,
> 
> Several comments below in addition to Simon's.
> 
> On 08/11/14 19:22, Nikita Kiryanov wrote:
>> Add initial support for Compulab CM-FX6 CoM.
>> Support includes MMC, SPI flash, and SPL with dynamic DRAM detection.
>>
>> Cc: Igor Grinberg <grinberg@compulab.co.il>
>> Cc: Stefano Babic <sbabic@denx.de>
>> Cc: Tom Rini <trini@ti.com>
>> Cc: Marek Vasut <marex@denx.de>
>> Acked-by: Marek Vasut <marex@denx.de>
>> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
>> ---

[...]

>> +#define CONFIG_EXTRA_ENV_SETTINGS \
>> +	"kernel=uImage-cm-fx6\0" \
>> +	"autoload=no\0" \
>> +	"loadaddr=0x10800000\0" \
>> +	"fdtaddr=0x11000000\0" \
>> +	"console=ttymxc3,115200\0" \
>> +	"ethprime=FEC0\0" \
>> +	"bootscr=boot.scr\0" \
>> +	"bootm_low=18000000\0" \
>> +	"video_hdmi=mxcfb0:dev=hdmi,1920x1080M-32 at 50,if=RGB32\0" \
>> +	"video_dvi=mxcfb0:dev=dvi,1280x800M-32 at 50,if=RGB32\0" \
>> +	"fdtfile=cm-fx6.dtb\0" \
>> +	"doboot=bootm ${loadaddr}\0" \
>> +	"loadfdt=false\0" \
>> +	"setboottypez=setenv kernel zImage-cm-fx6;" \
>> +		"setenv doboot bootz ${loadaddr} - ${fdtaddr};" \
>> +		"setenv loadfdt true;\0" \
>> +	"setboottypem=setenv kernel uImage-cm-fx6;" \
>> +		"setenv doboot bootm ${loadaddr};" \
>> +		"setenv loadfdt false;\0"\
>> +	"run_eboot=echo Starting EBOOT ...; "\
>> +		"mmc dev ${mmcdev} && " \
>> +		"mmc rescan && mmc read 10042000 a 400 && go 10042000\0" \
>> +	"mmcdev=2\0" \
>> +	"mmcroot=/dev/mmcblk0p2 rw rootwait\0" \
>> +	"loadmmcbootscript=fatload mmc ${mmcdev} ${loadaddr} ${bootscr}\0" \
> 
> Can we switch to use load instead of fatload?
> 
>> +	"mmcbootscript=echo Running bootscript from mmc ...; "\
>> +		"source ${loadaddr}\0" \
>> +	"mmcargs=setenv bootargs console=${console} " \
>> +		"root=${mmcroot} " \
>> +		"${video}\0" \
>> +	"mmcloadkernel=fatload mmc ${mmcdev} ${loadaddr} ${kernel}\0" \
>> +	"mmcloadfdt=fatload mmc ${mmcdev} ${fdtaddr} ${fdtfile}\0" \
>> +	"mmcboot=echo Booting from mmc ...; " \
>> +		"run mmcargs; " \
>> +		"run doboot\0" \
>> +	"nandroot=/dev/mtdblock4 rw\0" \
>> +	"nandrootfstype=ubifs\0" \
>> +	"nandargs=setenv bootargs console=${console} " \
>> +		"root=${nandroot} " \
>> +		"rootfstype=${nandrootfstype} " \
>> +		"${video}\0" \
>> +	"nandloadfdt=nand read ${fdtaddr} 780000 80000;\0" \
>> +	"nandboot=echo Booting from nand ...; " \
>> +		"run nandargs; " \
>> +		"nand read ${loadaddr} 0 780000; " \
>> +		"if ${loadfdt}; then " \
>> +			"run nandloadfdt;" \
>> +		"fi; " \
>> +		"run doboot\0" \

I think, if we add NAND support in a separate patch, then probably
it will be better also to add nand boot related environment stuff
along with the NAND support.

>> +	"boot=mmc dev ${mmcdev}; " \
>> +		"if mmc rescan; then " \
>> +			"if run loadmmcbootscript; then " \
>> +				"run mmcbootscript;" \
>> +			"else " \
>> +				"if run mmcloadkernel; then " \
>> +					"if ${loadfdt}; then " \
>> +						"run mmcloadfdt;" \
>> +					"fi;" \
>> +					"run mmcboot;" \
>> +				"fi;" \
>> +			"fi;" \
>> +		"fi;"

Also, you add NAND boot commands neither here, nor in the NAND
support patch. Can we have them too? Please?


-- 
Regards,
Igor.