On Thu, Mar 24, 2016 at 1:51 PM, Aleksey Makarov <aleksey.makarov@xxxxxxxxxx> wrote: > 'ARM Server Base Boot Requirements' [1] mentions SPCR (Serial Port > Console Redirection Table) [2] as a mandatory ACPI table that > specifies the configuration of serial console. > > Move "earlycon" early_param handling to earlycon.c to parse this option once > > Patch "ACPI: add definitions of DBG2 subtypes" is required for the next patch. > ACPI maintainers said that they had got it for the next release of ACPICA, > but it has not appeared in linux-next yet. It will. Patches containing it have just been posted. > Parse SPCR table, setup earlycon and add register specified console. > > Enable parsing this table on ARM64. Earlycon should be set up > as early as possible. ACPI boot tables are mapped in > arch/arm64/kernel/acpi.c:acpi_boot_table_init() called from setup_arch() > and that's where we parse spcr. So it has to be opted-in per-arch. > > Implement console_match() for pl011. > > Based on the work by Leif Lindholm [3] > Thanks to Peter Hurley for explaining how this should work. > > Should be applied to next-20160324. > > Tested on QEMU. SPCR support is included in QEMU's ARM mach-virt > since 2.4 release. Honestly, I'm not sure why I'm regarded as the right maintainer to send this to. The only patch here touching generic ACPI code is [3/5] (the [2/5] is going in through ACPICA) and the rest is all about ARM64 AFAICS. Why don't you send it to the ARM64 maintainers instead? I'll have some comments on [3/5], I'll send them later today or tomorrow. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
