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- The spl command is used to export a boot parameter image to RAM. Later
- it may implement more functions connected to the SPL.
- SUBCOMMAND EXPORT
- To execute the command everything has to be in place as if bootm should be
- used. (kernel image, initrd-image, fdt-image etc.)
- export has two subcommands:
- atags: exports the ATAGS
- fdt: exports the FDT
- Call is:
- spl export <ftd|atags> [kernel_addr] [initrd_addr] [fdt_addr if fdt]
- TYPICAL CALL
- on OMAP3:
- nandecc hw
- nand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/
- spl export atags /* export ATAGS */
- nand erase 0x680000 0x20000 /* erase - one page */
- nand write 0x80000100 0x680000 0x20000 /* write the image - one page */
- call with FDT:
- nandecc hw
- nand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/
- tftpboot 0x80000100 devkit8000.dtb /* Read fdt */
- spl export fdt 0x82000000 - 0x80000100 /* export FDT */
- nand erase 0x680000 0x20000 /* erase - one page */
- nand write <adress shown by spl export> 0x680000 0x20000
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