PXA3xx Boot ROM Reference Manual - Marvell

PXA3xx Processor and Tavor ProcessorBoot ROM Reference Manual6.3.2 UART/USB Protocol PackagesThe UART/USB Protocol packages allow users to override the default USB and UART connectionsettings. The identifier for this package can be 0x55415254 (for UART) or 0x00555342 (forUSB). The port may also select as appropriate one of the following IDs:FFIDENTIFIER:ALTIDENTIFIER:DIFFIDENTIFIER:SEIDENTIFIER:U2DIDENTIFIER:CI2IDENTIFIEROPT_PROTOCOL_SET:WTP_RESERVED_AREA_HEADER WRAH;unsigned int Port;unsigned int Enabled;6.3.3 DDR PackageThe optional DDR package queues the Boot ROM to set up DDR based on the supplied timingparameters. Only the timing parameters based on the targeted hardware apply. The ID for thispackage is 0x44447248, which represents DDRH in ASCII.OPT_DDR_SET:WTP_RESERVED_AREA_HEADER WRAH;unsigned int ACCR_VALUE;unsigned int MDCNFG_VALUE;unsigned int DDR_HCAL_VALUE;unsigned int MDREFR_VALUE;6.3.4 Resume Package0x000046460x00414C540x446966660x000053450x555342320x00434932The Resume Package provides instructions to the Boot ROM for loading and resuming an imageafter a wake-up from sleep. The image address, size, and checksum are specified in this package.The ID for this package is 0x5265736D, which represents RESM in ASCII.OPT_RESM_LOC:WTP_RESERVED_AREA_HEADER WRAH;unsigned int ImageAddr;unsigned int ImageSize;unsigned int ImageCRC;6.3.5 USB Vendor Request PackageThe USB Vendor Request package is included in the reserved data when a special packagerequested by the vendor is required. This structure is the first word of the any trailing data. There isno restriction that the data has to be 32-bit aligned.The ID for this package is 0X56524551, which represents VREQ in ASCII.USB_VENDOR_REQ:WTP_RESERVED_AREA_HEADER WRAH;unsigned int bmRequestType;unsigned int bRequest;unsigned int wValue;12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758Doc. No. MV-S301208-00 Rev. - PUBLIC RELEASE Copyright © 2010 MarvellPage 68