On Tue, Mar 26, 2013 at 09:57:35AM +0530, Sricharan R wrote:
Now with kernel moving to all device tree, the default boot command is changed to pass the device tree blob. Also, adding the findfdt command to get the dt-blob based on the board.
[snip]
@@ -153,7 +155,9 @@ "mmcargs=setenv bootargs console=${console} " \ "vram=${vram} " \ "root=${mmcroot} " \
"rootfstype=${mmcrootfstype}\0" \
"rootfstype=${mmcrootfstype}; " \"run findfdt; " \"fatload mmc ${mmcdev} ${fdtaddr} ${fdtfile}\0" \
I missed this part before, sorry. What we do on am335x_evm to allow for easier overrides is: - bootcmd runs findfdt (since we'll need it in all cases). - Enable CONFIG_CMD_FS_GENERIC - Add a 'loadfdt' command that can be called out ala loaduimage - Use 'load' in loadfdt/loaduimage so that we don't care what the underlying filesystem type is. - Use bootdir to help with overrides as well: loaduimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile} loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
So that we can easily grab from the first partition (FAT) or another partition (ext3/4/etc).