From 1648a37505e84fc4e5268b026c3f1db862107e00 Mon Sep 17 00:00:00 2001 From: Simon Schwarz Date: Thu, 15 Mar 2012 04:01:34 +0000 Subject: Add cmd_spl command This adds a spl command to the u-boot. Related config: CONFIG_CMD_SPL activate/deactivate the command CONFIG_CMD_SPL_NAND_OFS Offset in NAND to use Signed-off-by: Simon Schwarz Signed-off-by: Stefano Babic CC: Tom Rini CC: Wolfgang Denk --- doc/README.commands.spl | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 doc/README.commands.spl (limited to 'doc') diff --git a/doc/README.commands.spl b/doc/README.commands.spl new file mode 100644 index 0000000000..ac332731ee --- /dev/null +++ b/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 [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 0x680000 0x20000 -- cgit v1.2.1