From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shannon Zhao Subject: [PATCH v4 05/21] arm/acpi: Add basic ACPI initialization Date: Sat, 23 Jan 2016 17:19:57 +0800 Message-ID: <1453540813-15764-6-git-send-email-zhaoshenglong@huawei.com> References: <1453540813-15764-1-git-send-email-zhaoshenglong@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1453540813-15764-1-git-send-email-zhaoshenglong@huawei.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, peter.huangpeng@huawei.com, julien.grall@citrix.com, stefano.stabellini@citrix.com, shannon.zhao@linaro.org List-Id: xen-devel@lists.xenproject.org From: Shannon Zhao acpi_boot_table_init() will be called in start_xen to get the RSDP and all the table pointers. With this patch, we can get ACPI boot-time tables from firmware on ARM64. Signed-off-by: Naresh Bhat Signed-off-by: Parth Dixit Signed-off-by: Shannon Zhao --- xen/arch/arm/acpi/Makefile | 1 + xen/arch/arm/acpi/boot.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++ xen/arch/arm/setup.c | 4 ++++ 3 files changed, 63 insertions(+) create mode 100644 xen/arch/arm/acpi/boot.c diff --git a/xen/arch/arm/acpi/Makefile b/xen/arch/arm/acpi/Makefile index b5be22d..196c40a 100644 --- a/xen/arch/arm/acpi/Makefile +++ b/xen/arch/arm/acpi/Makefile @@ -1 +1,2 @@ obj-y += lib.o +obj-y += boot.o diff --git a/xen/arch/arm/acpi/boot.c b/xen/arch/arm/acpi/boot.c new file mode 100644 index 0000000..1570f7e --- /dev/null +++ b/xen/arch/arm/acpi/boot.c @@ -0,0 +1,58 @@ +/* + * ARM Specific Low-Level ACPI Boot Support + * + * Copyright (C) 2001, 2002 Paul Diefenbaugh + * Copyright (C) 2001 Jun Nakajima + * Copyright (C) 2014, Naresh Bhat + * Copyright (C) 2015, Shannon Zhao + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include +#include + +#include + +/* + * acpi_boot_table_init() called from setup_arch(), always. + * 1. find RSDP and get its address, and then find XSDT + * 2. extract all tables and checksums them all + * + * return value: (currently ignored) + * 0: success + * !0: failure + * + * We can parse ACPI boot-time tables such as FADT, MADT after + * this function is called. + */ +int __init acpi_boot_table_init(void) +{ + int error; + + /* Initialize the ACPI boot-time table parser. */ + error = acpi_table_init(); + if ( error ) + { + disable_acpi(); + return error; + } + + return 0; +} diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c index 0ba601e..c15a09d 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -749,6 +750,9 @@ void __init start_xen(unsigned long boot_phys_offset, setup_mm(fdt_paddr, fdt_size); + /* Parse the ACPI tables for possible boot-time configuration */ + acpi_boot_table_init(); + end_boot_allocator(); vm_init(); -- 2.0.4