From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: [PATCH v4 15/27] xen/arm: Create a fake PSCI node in dom0 device tree Date: Fri, 13 Sep 2013 13:49:22 +0100 Message-ID: <1379076574-28316-16-git-send-email-julien.grall@linaro.org> References: <1379076574-28316-1-git-send-email-julien.grall@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1379076574-28316-1-git-send-email-julien.grall@linaro.org> 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: patches@linaro.org, Julien Grall , ian.campbell@citrix.com, andre.przywara@linaro.org, stefano.stabellini@eu.citrix.com List-Id: xen-devel@lists.xenproject.org Xen uses PSCI to bring up secondary cpus for the guest. Signed-off-by: Julien Grall --- Changes in v2: - Use fdt_property_cell --- xen/arch/arm/domain_build.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 70f48b6..e1333a4 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -319,6 +320,38 @@ static int make_hypervisor_node(void *fdt, const struct dt_device_node *parent) return res; } +static int make_psci_node(void *fdt, const struct dt_device_node *parent) +{ + int res; + + DPRINT("Create PSCI node\n"); + + /* See linux Documentation/devicetree/bindings/arm/psci.txt */ + res = fdt_begin_node(fdt, "psci"); + if ( res ) + return res; + + res = fdt_property_string(fdt, "compatible", "arm,psci"); + if ( res ) + return res; + + res = fdt_property_string(fdt, "method", "hvc"); + if ( res ) + return res; + + res = fdt_property_cell(fdt, "cpu_off", __PSCI_cpu_off); + if ( res ) + return res; + + res = fdt_property_cell(fdt, "cpu_on", __PSCI_cpu_on); + if ( res ) + return res; + + res = fdt_end_node(fdt); + + return res; +} + /* Map the device in the domain */ static int map_device(struct domain *d, const struct dt_device_node *dev) { @@ -406,6 +439,7 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo, { DT_MATCH_COMPATIBLE("xen,xen"), DT_MATCH_COMPATIBLE("xen,multiboot-module"), + DT_MATCH_COMPATIBLE("arm,psci"), { /* sentinel */ }, }; const struct dt_device_node *child; @@ -471,6 +505,10 @@ static int handle_node(struct domain *d, struct kernel_info *kinfo, res = make_hypervisor_node(kinfo->fdt, np); if ( res ) return res; + + res = make_psci_node(kinfo->fdt, np); + if ( res ) + return res; } res = fdt_end_node(kinfo->fdt); -- 1.7.10.4