1*4882a593SmuzhiyunThe spl command is used to export a boot parameter image to RAM. Later 2*4882a593Smuzhiyunit may implement more functions connected to the SPL. 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunSUBCOMMAND EXPORT 5*4882a593SmuzhiyunTo execute the command everything has to be in place as if bootm should be 6*4882a593Smuzhiyunused. (kernel image, initrd-image, fdt-image etc.) 7*4882a593Smuzhiyun 8*4882a593Smuzhiyunexport has two subcommands: 9*4882a593Smuzhiyun atags: exports the ATAGS 10*4882a593Smuzhiyun fdt: exports the FDT 11*4882a593Smuzhiyun 12*4882a593SmuzhiyunCall is: 13*4882a593Smuzhiyunspl export <fdt|atags> [kernel_addr] [initrd_addr] [fdt_addr if fdt] 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun 16*4882a593SmuzhiyunTYPICAL CALL 17*4882a593Smuzhiyun 18*4882a593Smuzhiyunon OMAP3: 19*4882a593Smuzhiyunnandecc hw 20*4882a593Smuzhiyunnand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/ 21*4882a593Smuzhiyunspl export atags /* export ATAGS */ 22*4882a593Smuzhiyunnand erase 0x680000 0x20000 /* erase - one page */ 23*4882a593Smuzhiyunnand write 0x80000100 0x680000 0x20000 /* write the image - one page */ 24*4882a593Smuzhiyun 25*4882a593Smuzhiyuncall with FDT: 26*4882a593Smuzhiyunnandecc hw 27*4882a593Smuzhiyunnand read 0x82000000 0x280000 0x400000 /* Read kernel image from NAND*/ 28*4882a593Smuzhiyuntftpboot 0x80000100 devkit8000.dtb /* Read fdt */ 29*4882a593Smuzhiyunspl export fdt 0x82000000 - 0x80000100 /* export FDT */ 30*4882a593Smuzhiyunnand erase 0x680000 0x20000 /* erase - one page */ 31*4882a593Smuzhiyunnand write <adress shown by spl export> 0x680000 0x20000 32