1 2Summary 3======= 4 5This README is about U-Boot support for TI's ARM Cortex-A8 based OMAP3 [1] 6family of SoCs. TI's OMAP3 SoC family contains an ARM Cortex-A8. Additionally, 7some family members contain a TMS320C64x+ DSP and/or an Imagination SGX 2D/3D 8graphics processor and various other standard peripherals. 9 10Currently the following boards are supported: 11 12* OMAP3530 BeagleBoard [2] 13 14* Gumstix Overo [3] 15 16* TI EVM [4] 17 18* OpenPandora Ltd. Pandora [5] 19 20* TI/Logic PD Zoom MDK [6] 21 22Toolchain 23========= 24 25While ARM Cortex-A8 support ARM v7 instruction set (-march=armv7a) we compile 26with -march=armv5 to allow more compilers to work. For U-Boot code this has 27no performance impact. 28 29Build 30===== 31 32* BeagleBoard: 33 34make omap3_beagle_config 35make 36 37* Gumstix Overo: 38 39make omap3_overo_config 40make 41 42* TI EVM: 43 44make omap3_evm_config 45make 46 47* Pandora: 48 49make omap3_pandora_config 50make 51 52* Zoom MDK: 53 54make omap3_zoom1_config 55make 56 57Custom commands 58=============== 59 60To make U-Boot for OMAP3 support NAND device SW or HW ECC calculation, U-Boot 61for OMAP3 supports custom user command 62 63nandecc hw/sw 64 65To be compatible with NAND drivers using SW ECC (e.g. kernel code) 66 67nandecc sw 68 69enables SW ECC calculation. HW ECC enabled with 70 71nandecc hw 72 73is typically used to write 2nd stage bootloader (known as 'x-loader') which is 74executed by OMAP3's boot rom and therefore has to be written with HW ECC. 75 76For all other commands see 77 78help 79 80Acknowledgements 81================ 82 83OMAP3 U-Boot is based on U-Boot tar ball [7] for BeagleBoard and EVM done by 84several TI employees. 85 86Links 87===== 88 89[1] OMAP3: 90 91http://www.ti.com/omap3 (high volume) and 92http://www.ti.com/omap35x (broad market) 93 94[2] OMAP3530 BeagleBoard: 95 96http://beagleboard.org/ 97 98[3] Gumstix Overo: 99 100http://www.gumstix.net/Overo/ 101 102[4] TI EVM: 103 104http://focus.ti.com/docs/toolsw/folders/print/tmdxevm3503.html 105 106[5] OpenPandora Ltd. Pandora: 107 108http://openpandora.org/ 109 110[6] TI/Logic PD Zoom MDK: 111 112http://www.logicpd.com/products/devkit/ti/zoom_mobile_development_kit 113 114[7] TI OMAP3 U-Boot: 115 116http://beagleboard.googlecode.com/files/u-boot_beagle_revb.tar.gz 117