1 The spl command is used to export a boot parameter image to RAM. Later 2 it may implement more functions connected to the SPL. 3 4 SUBCOMMAND EXPORT 5 To execute the command everything has to be in place as if bootm should be 6 used. (kernel image, initrd-image, fdt-image etc.) 7 8 export has two subcommands: 9 atags: exports the ATAGS 10 fdt: exports the FDT 11 12 Call is: 13 spl export <fdt|atags> [kernel_addr] [initrd_addr] [fdt_addr if fdt] 14 15 16 TYPICAL CALL 17 18 on OMAP3: 19 nandecc hw 20 nand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/ 21 spl export atags /* export ATAGS */ 22 nand erase 0x680000 0x20000 /* erase - one page */ 23 nand write 0x80000100 0x680000 0x20000 /* write the image - one page */ 24 25 call with FDT: 26 nandecc hw 27 nand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/ 28 tftpboot 0x80000100 devkit8000.dtb /* Read fdt */ 29 spl export fdt 0x82000000 - 0x80000100 /* export FDT */ 30 nand erase 0x680000 0x20000 /* erase - one page */ 31 nand write <adress shown by spl export> 0x680000 0x20000 32
