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![]() With the generic omap3-u-boot.dtsi file available, this patch increased the memory of the various incarnations of the omap3_logic board, and points their respective u-boot.dtsi files to the newly created generic one, and removes the PLATDATA from the board file. These are all done at once because the're all utilizing the same omap3logic.c board file. Signed-off-by: Adam Ford <aford173@gmail.com> |
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Kconfig | ||
MAINTAINERS | ||
Makefile | ||
omap3logic.c | ||
omap3logic.h | ||
README |
Summary ======= The source for omap3logic.c encompases the OMAP35 and DM3730 SOM-LV and DM3730 Torpedo platforms, but there are device trees custom taylored to each board. omap3_logic_defconfig = DM37 Torpedo / Torpedo + Wireless omap35_logic_defconfig = OMAP35 Torpedo omap3_logic_somlv_defconfig = DM37 SOM-LV omap35_logic_somlv_defconfig = OMAP35 SOM-LV The device tree included with each of the defconfig files will also direct the board as to which dtb file to load when loading the kernel, so it is not recomended to mix and match the defconfig files. Falcon Mode: FAT SD cards ========================= In this case the additional file is written to the filesystem. In this example we assume that the uImage and device tree to be used are already on the FAT filesystem (only the uImage MUST be for this to function afterwards) along with a Falcon Mode aware MLO and the FAT partition has already been created and marked bootable: U-Boot # mmc rescan # Load kernel and device tree into memory, perform export U-Boot # fatload mmc 0 ${loadaddr} uImage U-Boot # run loadfdt U-Boot # setenv optargs quiet U-Boot # run mmcargs U-Boot # run common_bootargs U-Boot # spl export fdt ${loadaddr} - ${fdtaddr} This will print a number of lines and then end with something like: Loading Device Tree to 8dec9000, end 8dee0295 ... OK So then note the starting address and write the args to mmc/sd: U-Boot # fatwrite mmc 0:1 0x8dec9000 args 0x20000 The size of 0x20000 matches the CMD_SPL_WRITE_SIZE. Falcon Mode: NAND ================= In this case the additional data is written to another partition of the NAND. In this example we assume that the uImage and device tree to be are already located on the NAND somewhere (such as filesystem or mtd partition) along with a Falcon Mode aware MLO written to the correct locations for booting and mtdparts have been configured correctly for the board: U-Boot # nand read ${loadaddr} kernel U-Boot # load nand rootfs ${fdtaddr} /boot/am335x-evm.dtb U-Boot # run nandargs U-Boot # run common_bootargs U-Boot # spl export fdt ${loadaddr} - ${fdtaddr} U-Boot # nand erase.part u-boot-spl-os U-Boot # nand write ${fdtaddr} u-boot-spl-os