nandboot-dm9k-tftp.rar_Bootloader_MX27_dm9k_freescale HAL_mx27 t

This file contains the information to use NANDBoot code NANDBoot consists of two parts: - Initial Program Loader (IPL), - Secondary Program Loader (SPL) - Tools to create NAND flash image Directory strucure: ------------------ bootloader |-- nandboot |-- Makefile -- Makefile for the complete nandboot |-- README.txt -- This file |-- full_output -- Directory contains Doxygen generated documentation |-- bin -- Contains the generated tools and binary files |-- Image_crc - Linux kernel image with CRC and size info |-- crcgen - Tool to generate CRC and write to the image |-- ipl1.bin - IPL binary part 1 (Runs from NAND RAM buffer) |-- ipl2.bin - IPL binary part 2 (Runs from SDRAM) |-- nandfsbuild - Tool to generate the NAND flash image for Virtio |-- mkiplspl.sh - Tool to generate iplspl.bin `-- spl.bin - SPL binary |-- crcgen -- Code for addition CRC checksum `-- mxc_nb_crcgen.c | image `-- Image - Linux Kernel Image |-- nandboot IPL code |-- ipl_link.lds.S |-- ipl_startup.S |-- ipl_startup2.c |-- mxc_nb_ipl.c SPL Code |-- platform |-- boot.c |-- mxc.h |-- mxc_init.c |-- drivers |-- nfc |-- mxc_nb_nfc.c |-- mxc_nb_nfc.h |-- uart |-- mxc_nb_uart.c |-- mxc_nb_uart.h |-- mxc_nb_extuart.c |-- nandboot |-- spl_link.lds.S |-- mxc_spl_startup.S Building and Installing the nandboot: ------------------------------------ 1) Compile the Linux 2.6 Kernel for MXC platform. This generates the Linux Kernel image. Copy this image file into nandboot/image/Image. 2) Configure the nandboot parameters (See Configuration section below). 3) Build Instructions: ------------------- 1. To compile nand bootloader for different platforms, modify the PLATFORM variable in the Makefile appropriately. 2. Export CROSS_COMPILE variable to point to the ARM gcc compiler toolkit. e.g. $ export CROSS_COMPILE=/opt/montavista/foundation/devkit/arm/v6_vfp_le/bin/arm_v6_vfp_le- 3. Export KBUILD_OUTPUT variable to point to the linux directory in the linux tree e.g. $ export KBUILD_OUTPUT=/home/LINUX2.6/linux 4. Use 'make clean' command to clean any previous object files. 5. Run make command in the nandboot directory. This generates the ipl (ipl1 and ipl2), spl, iplspl.bin and tools. This also creates the Image_crc file, which is the Linux Kernel image with length and CRC information added as two 4 byte data at the beginning. 4) Boot into the Linux with NAND MTD driver (using debugger and RedBoot). Write the iplspl.bin file into first NAND partition (/dev/mtd/5).Write kernel image Image_crc into second NAND partition (/dev/mtd/6). Write the root filesystem image into third NAND partition (/dev/mtd/7). Please note that Linux kernel image should be compiled to use the root from /dev/mtd/7. Then reboot the EVB. Now NAND boot should boot up the Linux kernel image from /dev/mtd/6. Please note that the EVB should be configured for NAND boot (Refer to NAND Boot design document(nandboot.fm) for NAND Boot fuses). 5) Run the Linux platform. This should give a menu of options to boot the Kernel. 6) Generate nandboot documentation by executing the command 'make doxygen' Configuration of NANDBoot: ------------------------- The following parameters can be configured by editing the header file bootloader/mxc.h: 1) UART_OUTPUT : Selects between External or Internal MXC UART This value is set to EXT_UART by default. Valid values: INT_UART - Use Internal MXC UART EXT_UART - Use External UART 2) UART_PORT : Selects the UART port number if UART_OUTPUT is set to EXT_UART Valid values: 1 - Use EXT_UART_A 2 - Use EXT_UART_B if UART_OUTPUT is set to INT_UART Valid values 2 - Use MXC UART_C 3) WDOG_EN: Enable/Disable Watchdog timer (MMCU_WDOG_1) Valid values: 1 - Enable 0 - Disable 4) UNIT_TEST: Enable/Disable unit testing of NANDBoot Enabling unit testing will make NANDBoot to perform unit test before going to the main menu. Valid values: Non-zero - Enable Unit testing 0 - Disable unit testing 5) CRC_EN : Enable/Diable 'Addition CRC' feature in Miniboot Valid values 1 - Enable 0 - Diable 6) CHANGE_COMMAND_LINE_OPTION : Enable/Disble change of command line option in Nandboot Valid Values 1 - Enable 0 - Disable 7) CHANGE_COMMAND_LINE_ADDRESS : Enable/Disble change of command line addresss option in nandboot Valid Values 1 - Enable 0 - Disable 8) UART_BAUD_RATE : Change UART Baud rate Valid values 9600, 19200, 38400, 57600, 115200 For details of the other configuration parameters, refer to Doxygen generated documentation for NANDBoot in full_output directory. --