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Booting from On-Chip ROM (eSDHC or eSPI)
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----------------------------------------
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boot_format is a tool to write SD bootable images to a filesystem and build
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SD/SPI images to a binary file for writing later.
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When booting from an SD card/MMC, boot_format puts the configuration file and
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the RAM-based U-Boot image on the card.
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When booting from an EEPROM, boot_format generates a binary image that is used
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to boot from this EEPROM.
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Where to get boot_format:
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========================
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you can browse it online at:
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http://git.freescale.com/git/cgit.cgi/ppc/sdk/boot-format.git/
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Building
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========
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Run the following to build this project
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$ make
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Execution
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=========
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boot_format runs under a regular Linux machine and requires a super user mode
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to run. Execute boot_format as follows.
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For building SD images by writing directly to a file system on SD media:
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$ boot_format $config u-boot.bin -sd $device
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Where $config is the included config.dat file for your platform and $device
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is the target block device for the SD media on your computer.
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For build binary images directly a local file:
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$ boot_format $config u-boot.bin -spi $file
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Where $file is the target file. Also keep in mind the u-boot.bin file needs
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to be the u-boot built for your particular platform and target media.
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Example: To generate a u-boot.bin for a P1022DS booting from SD, run the
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following in the u-boot repository:
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$ make P1022DS_SDCARD
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Configuration Files
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===================
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Below are the configuration files to be used with a particular platform. Keep
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in mind that some of these config files are tied to the platforms DDR speed.
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Please see the SoC reference manual for more documentation.
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P1022DS config_sram_p1022ds.dat
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P2020DS config_sram_p2020ds.dat
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P1020RDB config_ddr2_1g_p1020rdb_533M.dat
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P1020RDB config_ddr2_1g_p1020rdb_667M.dat
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P2020RDB config_ddr2_1g_p2020rdb_800M.dat
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P2020RDB config_ddr2_1g_p2020rdb_667M.dat
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P2020RDB config_ddr3_1gb_64bit_p2020rdb_pc.dat
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P1020RDB config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
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P1011RDB config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
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P1010RDB config_ddr3_1gb_p1010rdb_800M.dat
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P1021RDB config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
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P1022DS config_ddr3_2gb_p1022ds.dat
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P1024RDB config_ddr3_1gb_p1_p2_rdb_pc_667M.dat
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P1025RDB config_ddr3_1gb_p1_p2_rdb_pc_667M.dat
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P1016RDB config_ddr3_1gb_p1_p2_rdb_pc_667M.dat
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P1020UTM config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
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P1020MBG config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
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MPC8536DS config_ddr2_512m_mpc8536ds_667M.dat
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