doc/README.mpc85xx-sd-spi-boot

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Booting from On-Chip ROM (eSDHC or eSPI)
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boot_format is a tool to write SD bootable images to a filesystem and build
SD/SPI images to a binary file for writing later.

When booting from an SD card/MMC, boot_format puts the configuration file and
the RAM-based U-Boot image on the card.
When booting from an EEPROM, boot_format generates a binary image that is used
to boot from this EEPROM.

Where to get boot_format:
========================

you can browse it online at:
https://source.codeaurora.org/external/qoriq/qoriq-yocto-sdk/boot-format

Building
========

Run the following to build this project

	$ make

Execution
=========

boot_format runs under a regular Linux machine and requires a super user mode
to run. Execute boot_format as follows.

For building SD images by writing directly to a file system on SD media:

	$ boot_format $config u-boot.bin -sd $device

Where $config is the included config.dat file for your platform and $device
is the target block device for the SD media on your computer.

For build binary images directly a local file:

	$ boot_format $config u-boot.bin -spi $file

Where $file is the target file. Also keep in mind the u-boot.bin file needs
to be the u-boot built for your particular platform and target media.

Example: To generate a u-boot.bin for a P1022DS booting from SD, run the
following in the u-boot repository:

	$ make P1022DS_SDCARD

Configuration Files
===================

Below are the configuration files to be used with a particular platform. Keep
in mind that some of these config files are tied to the platforms DDR speed.
Please see the SoC reference manual for more documentation.

P1022DS		config_sram_p1022ds.dat
P2020DS		config_sram_p2020ds.dat
P1020RDB	config_ddr2_1g_p1020rdb_533M.dat
P1020RDB	config_ddr2_1g_p1020rdb_667M.dat
P2020RDB	config_ddr2_1g_p2020rdb_800M.dat
P2020RDB	config_ddr2_1g_p2020rdb_667M.dat
P2020RDB	config_ddr3_1gb_64bit_p2020rdb_pc.dat
P1020RDB	config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
P1011RDB	config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
P1010RDB	config_ddr3_1gb_p1010rdb_800M.dat
P1021RDB	config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
P1022DS		config_ddr3_2gb_p1022ds.dat
P1024RDB	config_ddr3_1gb_p1_p2_rdb_pc_667M.dat
P1025RDB	config_ddr3_1gb_p1_p2_rdb_pc_667M.dat
P1016RDB	config_ddr3_1gb_p1_p2_rdb_pc_667M.dat
P1020UTM	config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
P1020MBG	config_ddr3_1gb_p1_p2_rdb_pc_800M.dat
MPC8536DS	config_ddr2_512m_mpc8536ds_667M.dat