I'm seeing some strange behavior with the fw_setenv tools on OMAP.
Here's what I see when using the tools on OMAP (overo in this case):
1. fw_printenv prints the environment with no issues [1] 2. fw_setenv allows me to change a variable with no reported errors [2] 3. fw_printenv will print the changed environment, however the variables are not sorted [3] 4. Since all seems well at this point, I reboot. There is an error reading the new environment [4]
I added debug printf's to readenv() in env_nand.c and the root cause is an error return from ret=nand_read(&nand_info[0], offset, &len, char_ptr)). I get an error code of -74
Before I spend too much time on this I wanted to check to see if others are seeing this issue, or whether it might be OMAP specific.
Regards,
Steve
[1]
root@omap3-multi:~# fw_printenv baudrate=115200 bootcmd=if mmc rescan ${mmcdev}; then if run loadbootscript; then run bootscript; else if run loaduimage; then run mmcboot; else run nandboot; fi; fi; else run nandboot; fi bootdelay=5 bootscript=echo Running bootscript from mmc ...; source ${loadaddr} console=ttyS2,115200n8 defaultdisplay=dvi dieid#=1e1e00040000000004032d460d01900b dvimode=1024x768MR-16@60 ethact=smc911x-0 loadaddr=0x82000000 loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage mmcargs=setenv bootargs console=${console} mpurate=${mpurate} vram= ${vram} omapfb.mode=dvi:${dvimode} omapfb.debug=y omapdss.def_disp= ${defaultdisplay} root=${mmcroot} rootfstype=${mmcrootfstype} mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr} mmcdev=0 mmcroot=/dev/mmcblk0p2 rw mmcrootfstype=ext3 rootwait mpurate=500 nandargs=setenv bootargs console=${console} mpurate=${mpurate} vram= ${vram} omapfb.mode=dvi:${dvimode} omapfb.debug=y omapdss.def_disp= ${defaultdisplay} root=${nandroot} rootfstype=${nandrootfstype} nandboot=echo Booting from nand ...; run nandargs; nand read ${loadaddr} 280000 400000; bootm ${loadaddr} nandroot=/dev/mtdblock4 rw nandrootfstype=jffs2 stderr=serial stdin=serial stdout=serial vram=12M
[2]
root@omap3-multi:~# fw_setenv mpurate 720
[3]
root@omap3-multi:~# fw_printenv baudrate=115200 bootcmd=if mmc rescan ${mmcdev}; then if run loadbootscript; then run bootscript; else if run loaduimage; then run mmcboot; else run nandboot; fi; fi; else run nandboot; fi bootdelay=5 bootscript=echo Running bootscript from mmc ...; source ${loadaddr} console=ttyS2,115200n8 defaultdisplay=dvi dieid#=1e1e00040000000004032d460d01900b dvimode=1024x768MR-16@60 ethact=smc911x-0 loadaddr=0x82000000 loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage mmcargs=setenv bootargs console=${console} mpurate=${mpurate} vram= ${vram} omapfb.mode=dvi:${dvimode} omapfb.debug=y omapdss.def_disp= ${defaultdisplay} root=${mmcroot} rootfstype=${mmcrootfstype} mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr} mmcdev=0 mmcroot=/dev/mmcblk0p2 rw mmcrootfstype=ext3 rootwait nandargs=setenv bootargs console=${console} mpurate=${mpurate} vram= ${vram} omapfb.mode=dvi:${dvimode} omapfb.debug=y omapdss.def_disp= ${defaultdisplay} root=${nandroot} rootfstype=${nandrootfstype} nandboot=echo Booting from nand ...; run nandargs; nand read ${loadaddr} 280000 400000; bootm ${loadaddr} nandroot=/dev/mtdblock4 rw nandrootfstype=jffs2 stderr=serial stdin=serial stdout=serial vram=12M mpurate=720
[4]
U-Boot 2010.12-rc1 (Nov 17 2010 - 08:04:09)
OMAP3530-GP ES3.1, CPU-OPP2, L3-165MHz, Max CPU Clock 600 mHz Gumstix Overo board + LPDDR/NAND I2C: ready DRAM: 256 MiB NAND: 256 MiB MMC: OMAP SD/MMC: 0 *** Warning - readenv() failed, using default environment