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author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
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committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/doc/README.commands.spl | |
download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip |
Diffstat (limited to 'roms/u-boot/doc/README.commands.spl')
-rw-r--r-- | roms/u-boot/doc/README.commands.spl | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/roms/u-boot/doc/README.commands.spl b/roms/u-boot/doc/README.commands.spl new file mode 100644 index 00000000..ac332731 --- /dev/null +++ b/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 |