[people/ms/u-boot.git] / doc / README.commands.spl

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 <fdt|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
Commit	Line	Data
1648a375 SS	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:
1cc0a9f4	13	spl export <fdt\|atags> [kernel_addr] [initrd_addr] [fdt_addr if fdt]
1648a375 SS	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