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diff --git a/x-loader b/x-loader deleted file mode 160000 -Subproject 1c9276af4d6a5b7014a7630a1abeddf3b317756 diff --git a/x-loader/README b/x-loader/README new file mode 100644 index 0000000..ae2662a --- /dev/null +++ b/x-loader/README @@ -0,0 +1,152 @@ +# +# (C) Copyright 2004-2006 Texas Instruments +# +# Some cut/paste from U-Boot README +# (C) Copyright 2000 - 2004 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +Summary: +======== + +This directory contains the source code for X-Loader, an initial program +loader for Embedded boards based on OMAP processors. X-Loader can be +signed by Texas Instruments IFT and installed to Nand flash to achieve +Nand booting. + + +Status: +======= + +The support for Texas Instruments H3 board (OMAP1710) has been implemented +and tested. (May 2004) +The support for Texas Instruments H4 board (OMAP2420) has been implemented +and tested. (Nov 2004) +The support for Texas Instruments 2430SDP board (OMAP2430) has been implemented +and tested. (Jul 2006) +The support for Texas Instruments 3430SDP board (OMAP3430) has been implemented +and tested. (Dec 2006) + + +Support for other OMAP boards can be added. + + +Directory Hierarchy: +==================== + +- board Board dependent files +- cpu CPU specific files +- drivers Commonly used device drivers +- lib Libraries + +- cpu/arm926ejs Files specific to ARM 926 CPUs +- cpu/arm1136 Files specific to ARM 1136 CPUs +- cpu/omap3 Files specific to ARM CortexA8 CPU + + +- board/omap1710h3 + Files specific to OMAP 1710 H3 boards +- board/omap2420h4 + Files specific to OMAP 2420 H4 boards +- board/omap2430sdp + Files specific to OMAP 2430 2430sdp boards +- board/omap3430sdp + Files specific to OMAP 3420sdp boards + + +Software Configuration: +======================= + +Configuration is usually done using C preprocessor defines. Configuration +depends on the combination of board and CPU type; all such information is +kept in a configuration file "include/configs/<board_name>.h". + +Example: For a H3 module, all configuration settings are in +"include/configs/omap1710h3.h". + +For all supported boards there are ready-to-use default +configurations available; just type "make <board_name>_config". + +Example: For a H3 module type: + + cd x-load + make omap1710h3_config + +After a board has been configured, type "make" to build it supposing the +needed cross tools are in your path. + + +Image Format: +============= + +X-Loader expects OS boot loader (e.g. U-Boot) in Nand flash using +JFFS2 style ECC. + + +Prepare Booting Nand Flash: +=========================== + +After you have built x-load.bin for your board, you need to do the +followings to get it into Nand flash: + +1. Use Texas Instruments IFT to sign x-load.bin. This results in a +signed image called x-load.bin.ift. +2. Use Texas Instruments FlashPrep to generate a .out file using +FlashWriterNand and specifying 0 as nand target address. +3. Use Texas instrumnets Code Composer Studio to run the .out file +which flashes x-load.bin.ift to Nand flash. + +Next you need to get your OS boot loader to Nand at the address your +X-Loader expects. For the H3 example, you can use U-Boot to flash U-Boot. +You can't use FlashWriterNand because it uses ROM code ECC style. + + +More Information +================ + +OMAP1710 NAND Booting Design Document has more information. + +Implemenation notes: +==================== +H3, H4 support NAND flash booting +2430sdp & 3430sdp support OneNAND booting + + + + + + + + + + + + + + + + + + + + + +
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