-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 12/13/12 16:51, Simon Glass wrote:
[snip] >>> And from there we can move on and say "On ${SoC} we get a >>> device tree (that we can't quite parse as we don't have enough >>> resources) AND $some-data (OMDATA or an abbreviated device tree >>> or $whatever), lets translate that into something we can make >>> use of very early rather than a hard-coded initial console >>> location" >> >> It seems like you're saying that once we have dynamic serial >> port assignment working based on DT, you'll be fine using ODMDATA >> to initialize the early console, but not before then? If so, I'm >> having a hard time understanding why enabling the DT-based >> support blocks using ODMDATA, since the code would be pretty >> orthogonal. > > Yes well dynamic console selection sounds find to me, ODMDATA or > otherwise. To me it is a Tegra feature that should be supported as > such. Perhaps we can allow the FDT console alias to specify > "odmdata" to mean that, and/or (as you suggest I think) set the > console to USE_ODMDATA, which then selects CONFIG_SYS_NS16550_COMx > accordingly. There's two parts to it. One part is that sure, Tegra and only Tegra has ODMDATA. But on am33xx if we poke the i2c eeprom (on platforms that do the eeprom) we can then know ... And I bet other SoCs have other tricks for this or that. So it's not just tegra that can tell us the initial console is $here or $there if we just ...something. The other part is, take a look at the Allwinner thread from a week or so ago. We really need to define how we want early board specific data to come in because if we start saying we'll accept per-SoC solutions we'll be drowning in them in short time. We want to say here's our preferred way to pass this information in. - -- Tom -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQIcBAEBAgAGBQJQy47RAAoJENk4IS6UOR1W/wIP/1CyXg8ShiITZAS6/R52Aj89 X7mhTHWUg3m+BtEN8TGkI8foznHjpv5JK7Exlf8XgKuoH6idBYd/5eF6nRXGfePY rQAad+hHeBYSBfvaP6GIaSTMm5x6KDMILExDkxue0mNcdkRL568ac0oR/HsVPM/N d75PVHsK77dAIzm9DbT3m2zilHC6balbplG1LtnKx0+sKb/PGpfXT5GYCZUUc9es R2Uzkyx+f25ZTlVRzdrh+h8SDhNzuACszJtqY11SxhLUZevvkja0jm6LykBsyJGH wh1wydRRPN6LKWRVQgUAHBJBEebf6Olck+PPBBA3+LypN5kSuj+bKixoyNxTQHIf E8qJb59rB7bnXLVb43AudcbUWe/PqdwZ8Yha3dmMrT/r8k0eXfNLBXlIP8BDXPis 4ssoH/DZXqv0+QvsmX+NPoF/3pBSy/Uc1g13w20xbdy12ovGEVgOWwioOPKgWgCR b34CvOT7MR+8zMixCHP287ITyTrpY/K7gxo2rF8EQ+o6QW1JCphTJFpVqlTVWEAT 5vPMnt7y7w9WtImCxUpa7itMfeVOgnbv+2bB2Ipxj6VjOZcIvdqB405wN39bGYux fzatCFurtbdaSQ7aFR1ZFRp51rjl/rC7QxODD0H84Ip7AbVO2qLPOTri2wwYfaPN EXPCI+T8YtDbI2/RW92B =DR6s -----END PGP SIGNATURE----- _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot