On 01/14/2015 09:04 AM, Hanjun Guo wrote:
FADT Major.Minor version was introduced in ACPI 5.1, it is the same as ACPI version. In ACPI 5.1, some major gaps are fixed for ARM, such as updates in MADT table for GIC and SMP init, without those updates, we can not get the MPIDR for SMP init, and GICv2/3 related init information, so we can't boot arm64 ACPI properly with table versions predating 5.1. If firmware provides ACPI tables with ACPI version less than 5.1, OS will be messed up with those information and have no way to init smp and GIC, so disable ACPI if we get an FADT table with version less that 5.1. Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx> Tested-by: Yijing Wang <wangyijing@xxxxxxxxxx> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> ---
Tested-by: Mark Langsdorf <mlangsdo@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
