X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=doc%2FREADME.davinci;h=6522c24eea1668a4d4fa143ec4b53ca75041272d;hb=45dbb4dd23a0bcbeee66540e5baa85d549ac95fb;hp=506f0d4327283b9c883a13f05f121b65cef33c54;hpb=2a49bf3149e34e6f910e70bbc0a26e81cfdbdf70;p=oweals%2Fu-boot.git diff --git a/doc/README.davinci b/doc/README.davinci index 506f0d4327..6522c24eea 100644 --- a/doc/README.davinci +++ b/doc/README.davinci @@ -1,116 +1,78 @@ Summary ======= -This README is about U-Boot support for TI's ARM 926EJS based family of SoCs. -These SOCs are used for cameras, video security and surveillance, DVR's, etc. -DaVinci SOC's comprise of DM644x, DM646x, DM35x and DM36x series of SOC's -Additionally there are some SOCs meant for the audio market which though have -an OMAP part number are very similar to the DaVinci series of SOC's -Additionally, some family members contain a TI DSP and/or graphics -co processors along with a host of other peripherals. +Note: this document used to be about the entire family of DaVinci SOCs but the +support for the DM* family and DA830 has since been dropped. -Currently the following boards are supported: - -* TI DaVinci DM644x EVM - -* TI DaVinci DM646x EVM - -* TI DaVinci DM355 EVM +This README is about U-Boot support for TI's DA850 SoC. This SOC has an OMAP +part number but is very similar to the DaVinci series. -* TI DaVinci DM365 EVM - -* TI DA830 EVM - -* DM355 based Leopard board +Currently the following boards are supported: -* DM644x based schmoogie board +* TI DA850 EVM -* DM644x based sffsdr board +* TI OMAP-L138 LCDK -* DM644x based sonata board +* Lego EV3 Build ===== -* TI DaVinci DM644x EVM: - -make davinci_dvevm_config -make - -* TI DaVinci DM646x EVM: - -make davinci_dm6467evm_config -make - -* TI DaVinci DM355 EVM: +* TI DA850 EVM: -make davinci_dm355evm_config +make da850evm_config make -* TI DaVinci DM365 EVM: +* TI OMAP-L138 LCDK -make davinci_dm365evm_config +make omapl138_lcdk_defconfig make -* TI DA830 EVM: +* Lego EV3 -make da830evm_config +make legoev3_defconfig make -* DM355 based Leopard board: +Bootloaders +=============== -make davinci_dm355leopard_config -make +For DA850 an SPL (secondary program loader, see doc/README.SPL) is provided +to load U-Boot directly from SPI flash. The SPL takes care of the low level +initialization. -* DM644x based schmoogie board: +The SPL is built as u-boot.ais for all DA850 defconfigs. The resulting +image file can be programmed to the SPI flash of the DA850 EVM/LCDK. -make davinci_schmoogie_config -make +Environment Variables +===================== -* DM644x based sffsdr board: +The DA850 EVM allows the user to specify the maximum cpu clock allowed by the +silicon, in Hz, via an environment variable "maxcpuclk". -make davinci_sffsdr_config -make - -* DM644x based sonata board: +The maximum clock rate allowed depends on the silicon populated on the EVM. +Please make sure you understand the restrictions placed on this clock in the +device specific datasheet before setting up this variable. This information is +passed to the Linux kernel using the ATAG_REVISION atag. -make davinci_sonata_config -make - -Bootloaders -=============== - -The DaVinci SOC's use 2 bootloaders. The low level initialization -is done by a UBL(user boot loader). The UBL is written to a NAND/NOR/SPI flash -by a programmer. During initial bootup, the ROM Bootloader reads the UBL -from a storage device and loads it into the IRAM. The UBL then loads the U-Boot -into the RAM. -The programmers and UBL are always released as part of any standard TI -software release associated with an SOC. +If "maxcpuclk" is not defined, the configuration CONFIG_DA850_EVM_MAX_CPU_CLK +is used to obtain this information. Links ===== -1) TI DaVinci DM355 EVM: -http://focus.ti.com/docs/prod/folders/print/tms320dm355.html -http://www.spectrumdigital.com/product_info.php?cPath=103&products_id=203&osCsid=c499af6087317f11b3da19b4e8f1af32 - -2) TI DaVinci DM365 EVM: -http://focus.ti.com/docs/prod/folders/print/tms320dm365.html?247SEM= -http://support.spectrumdigital.com/boards/evmdm365/revc/ - -3) DaVinci DM355 based leopard board -http://designsomething.org/leopardboard/default.aspx -http://www.spectrumdigital.com/product_info.php?cPath=103&products_id=192&osCsid=67c20335668ffc57cb35727106eb24b1 +1) TI DA850 EVM +http://focus.ti.com/docs/prod/folders/print/omap-l138.html +http://www.logicpd.com/products/development-kits/zoom-omap-l138-evm-development-kit -4) TI DaVinci DM6467 EVM: -http://focus.ti.com/docs/prod/folders/print/tms320dm6467.html -http://support.spectrumdigital.com/boards/evmdm6467/revf/ +2) TI OMAP-L138 LCDK +http://focus.ti.com/docs/prod/folders/print/omap-l138.html +http://www.ti.com/tool/TMDXLCDK138 -5) TI DaVinci DM6446 EVM: -http://focus.ti.com/docs/prod/folders/print/tms320dm6446.html -http://www.spectrumdigital.com/product_info.php?cPath=103&products_id=222 +Davinci special defines +======================= -6) TI DA830 EVM -http://focus.ti.com/apps/docs/gencontent.tsp?appId=1&contentId=52385 -http://www.spectrumdigital.com/product_info.php?cPath=37&products_id=214 +CONFIG_SYS_DV_NOR_BOOT_CFG: AM18xx based boards, booting in NOR Boot mode + need a "NOR Boot Configuration Word" stored + in the NOR Flash. This define adds this. + More Info about this, see: + spraba5a.pdf chapter 3.1