How do I get u-boot-with-spl.sfp to read u-boot.scr instead of extlinux.conf?

Hello,

This is the default setup for uboot.

once you have the uboot source code, you can navigate to inculde/configs/socfpga_common.h file

inside this file, you can see the default uboot environments. for example:

#define CONFIG_EXTRA_ENV_SETTINGS \

"verify=n\0" \

"loadaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \

"fdtaddr=0x00000100\0" \

"bootimage=zImage\0" \

"bootimagesize=0x600000\0" \

"fdtimage=socfpga.dtb\0" \

"fdtimagesize=0x7000\0" \

"mmcloadcmd=fatload\0" \

"mmcloadpart=1\0" \

"mmcroot=/dev/mmcblk0p2\0" \

"qspiloadcs=0\0" \

"qspibootimageaddr=0xa0000\0" \

"qspifdtaddr=0x50000\0" \

"qspiroot=/dev/mtdblock1\0" \

"qspirootfstype=jffs2\0" \

"nandbootimageaddr=0x120000\0" \

"nandfdtaddr=0xA0000\0" \

"nandroot=/dev/mtdblock1\0" \

"nandrootfstype=jffs2\0" \

"ramboot=setenv bootargs " CONFIG_BOOTARGS ";" \

"bootz ${loadaddr} - ${fdtaddr}\0" \

"mmcload=mmc rescan;" \

"${mmcloadcmd} mmc 0:${mmcloadpart} ${loadaddr} ${bootimage};" \

"${mmcloadcmd} mmc 0:${mmcloadpart} ${fdtaddr} ${fdtimage}\0" \

"mmcboot=setenv bootargs " CONFIG_BOOTARGS \

" root=${mmcroot} rw rootwait;" \

"bootz ${loadaddr} - ${fdtaddr}\0" \

"netboot=dhcp ${bootimage} ; " \

"tftp ${fdtaddr} ${fdtimage} ; run ramboot\0" \

"qspiload=sf probe ${qspiloadcs};" \

"sf read ${loadaddr} ${qspibootimageaddr} ${bootimagesize};" \

"sf read ${fdtaddr} ${qspifdtaddr} ${fdtimagesize};\0" \

"qspiboot=setenv bootargs " CONFIG_BOOTARGS \

" root=${qspiroot} rw rootfstype=${qspirootfstype};"\

"bootz ${loadaddr} - ${fdtaddr}\0" \

"nandload=nand read ${loadaddr} ${nandbootimageaddr} ${bootimagesize};"\

"nand read ${fdtaddr} ${nandfdtaddr} ${fdtimagesize}\0" \

"nandboot=setenv bootargs " CONFIG_BOOTARGS \

" root=${nandroot} rw rootfstype=${nandrootfstype};"\

"bootz ${loadaddr} - ${fdtaddr}\0" \

"fpga=0\0" \

"fpgadata=0x2000000\0" \

"fpgadatasize=0x700000\0" \

CONFIG_KSZ9021_CLK_SKEW_ENV "=" \

__stringify(CONFIG_KSZ9021_CLK_SKEW_VAL) "\0" \

CONFIG_KSZ9021_DATA_SKEW_ENV "=" \

__stringify(CONFIG_KSZ9021_DATA_SKEW_VAL) "\0" \

"scriptfile=u-boot.scr\0" \

"callscript=if fatload mmc 0:1 $fpgadata $scriptfile;" \

"then source $fpgadata; " \

the above snapshot of code was taken from the socfpga_common.h, and this line show the default script name:

"scriptfile=u-boot.scr

if you need to change any environment setup from the default one, you need to modify this file, then compile uboot.

in case you need to read from .conf file, you can remove the .scr file and the uboot will read the .conf file automatically.

Hope this might help.

thanks.