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- Summary
- =======
- This README is about U-Boot support for TI's ARM Cortex-A8 based OMAP3 [1]
- family of SoCs. TI's OMAP3 SoC family contains an ARM Cortex-A8. Additionally,
- some family members contain a TMS320C64x+ DSP and/or an Imagination SGX 2D/3D
- graphics processor and various other standard peripherals.
- Currently the following boards are supported:
- * OMAP3530 BeagleBoard [2]
- * Gumstix Overo [3]
- * TI EVM [4]
- Toolchain
- =========
- While ARM Cortex-A8 support ARM v7 instruction set (-march=armv7a) we compile
- with -march=armv5 to allow more compilers to work. For U-Boot code this has
- no performance impact.
- Build
- =====
- * BeagleBoard:
- make omap3_beagle_config
- make
- * Gumstix Overo:
- make omap3_overo_config
- make
- * TI EVM:
- make omap3_evm_config
- make
- Custom commands
- ===============
- To make U-Boot for OMAP3 support NAND device SW or HW ECC calculation, U-Boot
- for OMAP3 supports custom user command
- nandecc hw/sw
- To be compatible with NAND drivers using SW ECC (e.g. kernel code)
- nandecc sw
- enables SW ECC calculation. HW ECC enabled with
- nandecc hw
- is typically used to write 2nd stage bootloader (known as 'x-loader') which is
- executed by OMAP3's boot rom and therefore has to be written with HW ECC.
- For all other commands see
- help
- Acknowledgements
- ================
- OMAP3 U-Boot is based on U-Boot tar ball [5] for BeagleBoard and EVM done by
- several TI employees.
- Links
- =====
- [1] OMAP3:
- http://www.ti.com/omap3 (high volume) and
- http://www.ti.com/omap35x (broad market)
- [2] OMAP3530 BeagleBoard:
- http://beagleboard.org/
- [3] Gumstix Overo:
- http://www.gumstix.net/Overo/
- [4] TI EVM:
- http://focus.ti.com/docs/toolsw/folders/print/tmdxevm3503.html
- [5] TI OMAP3 U-Boot:
- http://beagleboard.googlecode.com/files/u-boot_beagle_revb.tar.gz
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