On Tue, 16 Nov 2010 11:34:43 +0100 Wolfgang Denk <[email protected]> wrote:
> Dear Shaohui Xie, > > In message <[email protected]> you wrote: > > > > +The P4080 is capable of booting from SPI. The bootup process can be > > divided into > > +two stages: the first stage will load RCW and write configuration > > registers to > > +initialize SPI interface, and configure one CPC as 1M SRAM, and loads > > U-boot image > > +to CPC. The second stage will configure all the hardware and boot up to > > U-Boot > > +command line. > > + > > +The PBL image contains three parts, the first is RCW, the second is PBI > > commands > > +performs configuration registers write, the third is the 512KB u-boot > > image. The > > +PBL image is produced by tool pbl_image_tool.html. > > Please explain abbreviations. What's PBI? CPC? PBI is pre-boot initialization. CPC is corenet platform cache -- a.k.a. L3 cache. > What is "pbl_image_tool.html"? I doubt that a HTML page can be used > as tool? The html file contains a javascript-based tool. > And where can this tool be found? And why is it not part of the > U-Boot distribution? It *may* be bundled with the BSP -- not sure. It would be really nice if it were made generally available, though I don't know if there are any plans for that. Certainly we shouldn't be referring users towards it if it's not publicly available. > > +1. Producing RCW > > +Copy RCW of u-boot dump and paste it to tab "Tools" of the tool and choose > > +"Boot" and change PBI_SRC to "0b0101 - SPI 24b Addressing", change > > BOOT_LOC to > > You really mean one has to go to some web page and manually copy and > paste information there? > > To build some image? > > May I ask how you do automatic regression testing? We usually use xxd to turn a hex dump of an RCW into a binary. You only need the tool if you want something interactive to make changes to the RCW. The problem with providing such a hexdump here is that it would contain other settings that may not be appropriate for the board's configuration. RCWs on p4080 are a lot more complicated than on older chips; it's no longer practical to embed a near-universal default RCW in the U-Boot build. > > +2. Producing ACS File > > What is ACS? Don't know, I don't even have a reference to that in my copy of the RCW tool. :-P > > + make P4080DS_PBL_BOOT_INDIRECT_config > > + make CROSS_COMPILE=powerpc-none-linux-gnuspe- all > > + xxd u-boot.bin > u-boot.xxd > > > +3. Producing PBI commands > > +Switch to tab "PBI" and paste commands below into text field (please note > > these > > +commands are for CPC1 used as SRAM only, change corresponding register > > setting > > +if CPC2 need to be used as SRAM), then choose "ACS File (XXD Object Dump)", > > +change Offset to "f80000", and click "Browse" to select the u-boot.xxd file > > +produced in step 2, and click "Add PBI Data", after it finished, paste > > +"09138000 00000000" and "091380c0 00000000" at the end. > > This must be a bad joke. > > Can you not provide a plain and simple AUTOMATIC way to get this > result? some plain stupid command line tool? Something that works as > a simple "make XXX" ? So it can be scripted / automatized / used? Yes, a simple C tool to take an existing PBL or RCW dump and "espi-ize" it into a PBL dump would be nice. The user will still need to acquire the existing RCW manually. This only needs to be done once on a board; it's not part of building a U-Boot image. -Scott _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
