X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fdoc%2FREADME.commands.spl;fp=qemu%2Froms%2Fu-boot%2Fdoc%2FREADME.commands.spl;h=ac332731eeee678863fe43f51d2f71bcd41eea1e;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/doc/README.commands.spl b/qemu/roms/u-boot/doc/README.commands.spl
new file mode 100644
index 000000000..ac332731e
--- /dev/null
+++ b/qemu/roms/u-boot/doc/README.commands.spl
@@ -0,0 +1,31 @@
+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