On 19 April 2013 18:14, Catalin Marinas <catalin.marinas@xxxxxxx> wrote: > On Fri, Apr 19, 2013 at 05:33:18PM +0100, Peter Maydell wrote: >> The command line lives in the DTB anyway so if you can't look >> in the DTB you can't get at earlyprintk config either way. > > Linux indeed looks in the DT for the command line and that's what's > triggering the earlyprintk console but at that stage the DT is flat. > Unflattening the DT happens later (it requires slab allocator). I > initially thought about extracting the early console device from the DT > but when it is flat you can't parse the full hierarchy to get its > address. So you could add a DT property that specifies the information in a format that you can get at at the right time. That's annoying duplication, but at least it's not in the command line (which is a raw ascii string that QEMU &co shouldn't have to be parsing or editing). "/console/type" and "/console/address" or something? -- PMM _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
