On 01/25/2016 03:45 AM, Aleksey Makarov wrote: > This patchset is based on the patchset by Leif Lindholm [1] > > 'ARM Server Base Boot Requirements' [2] mention SPCR > (Serial Port Console Redirection Table) [3] as a mandatory > ACPI table that specifies the configuration of serial console. > > Licensing concerns have prevented implementing it in the past, but as of > 10 August 2015, these tables have both been released also under > OWF 1.0 [4]. This license has a patent retaliation provision, which makes it incompatible with GPLv2. *If the license applies to this code*, then this patch set does not meet the criteria for submission. Regards, Peter Hurley > SPCR support is included in QEMU's ARM mach-virt since 2.4 release. > > Parse the SPCR table and check if any registered console match > the description. If it does, enable that console. > > To implement that, introduce a new member > int (*acpi_match)(struct console *, struct acpi_table_spcr *); > of struct console. It allows drivers to check if they provide > a matching console device. > > Also add an implementation of this member function to the pl011 driver > and fix a minor issue in kernel/printk/printk.c > > [1] https://lkml.kernel.org/g/1441716217-23786-1-git-send-email-leif.lindholm@xxxxxxxxxx > [2] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.den0044a/index.html > [3] https://msdn.microsoft.com/en-us/library/windows/hardware/dn639132(v=vs.85).aspx > [4] http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owfa-1-0 > > Aleksey Makarov (3): > printk: make preferred_console local static bool > ACPI: parse SPCR and enable matching console > serial: pl011: add acpi_match for amba-pl011.c > > arch/arm64/Kconfig | 1 + > drivers/acpi/Kconfig | 3 ++ > drivers/acpi/Makefile | 1 + > drivers/acpi/spcr.c | 85 +++++++++++++++++++++++++++++++++++++ > drivers/tty/serial/amba-pl011.c | 14 ++++++ > include/acpi/actbl2.h | 4 ++ > include/linux/console.h | 12 ++++++ > kernel/printk/printk.c | 94 +++++++++++++++++++++++++++++++---------- > 8 files changed, 191 insertions(+), 23 deletions(-) > create mode 100644 drivers/acpi/spcr.c > -- 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
