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authorDinh Nguyen <dinguyen@opensource.altera.com>2015-06-03 05:14:02 +0300
committerKevin Hilman <khilman@linaro.org>2015-06-11 01:35:35 +0300
commit45be0cdb5323d6f2b4005a4d9263a72eac2040cd (patch)
treebc331c9bbffe4ea63a77452a12aeb57116fa992a /arch/arm/mach-socfpga
parent5f763ef80d4dff7f2aa519a31472b03499e2c2e1 (diff)
downloadlinux-45be0cdb5323d6f2b4005a4d9263a72eac2040cd.tar.xz
ARM: socfpga: add CPU_METHOD_OF_DECLARE for Arria 10
Add boot_secondary implementation for the Arria10 platform. Bringing up the secondary core on the Arria 10 platform is pretty similar to the Cyclone/Arria 5 platform, with the exception of the following differences: - Register offset to bringup CPU1 out of reset is different. - The cpu1-start-addr for Arria10 contains an additional nibble. Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'arch/arm/mach-socfpga')
-rw-r--r--arch/arm/mach-socfpga/core.h2
-rw-r--r--arch/arm/mach-socfpga/platsmp.c32
2 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-socfpga/core.h b/arch/arm/mach-socfpga/core.h
index 38e5cbf37f45..27e7c65093c0 100644
--- a/arch/arm/mach-socfpga/core.h
+++ b/arch/arm/mach-socfpga/core.h
@@ -25,6 +25,8 @@
#define SOCFPGA_RSTMGR_MODPERRST 0x14
#define SOCFPGA_RSTMGR_BRGMODRST 0x1c
+#define SOCFPGA_A10_RSTMGR_MODMPURST 0x20
+
/* System Manager bits */
#define RSTMGR_CTRL_SWCOLDRSTREQ 0x1 /* Cold Reset */
#define RSTMGR_CTRL_SWWARMRSTREQ 0x2 /* Warm Reset */
diff --git a/arch/arm/mach-socfpga/platsmp.c b/arch/arm/mach-socfpga/platsmp.c
index b84c1a12d3ae..5454e9ce31ea 100644
--- a/arch/arm/mach-socfpga/platsmp.c
+++ b/arch/arm/mach-socfpga/platsmp.c
@@ -54,6 +54,29 @@ static int socfpga_boot_secondary(unsigned int cpu, struct task_struct *idle)
return 0;
}
+static int socfpga_a10_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ int trampoline_size = &secondary_trampoline_end - &secondary_trampoline;
+
+ if (socfpga_cpu1start_addr) {
+ writel(RSTMGR_MPUMODRST_CPU1, rst_manager_base_addr +
+ SOCFPGA_A10_RSTMGR_MODMPURST);
+ memcpy(phys_to_virt(0), &secondary_trampoline, trampoline_size);
+
+ writel(virt_to_phys(socfpga_secondary_startup),
+ sys_manager_base_addr + (socfpga_cpu1start_addr & 0x00000fff));
+
+ flush_cache_all();
+ smp_wmb();
+ outer_clean_range(0, trampoline_size);
+
+ /* This will release CPU #1 out of reset. */
+ writel(0, rst_manager_base_addr + SOCFPGA_A10_RSTMGR_MODMPURST);
+ }
+
+ return 0;
+}
+
static void __init socfpga_smp_prepare_cpus(unsigned int max_cpus)
{
struct device_node *np;
@@ -91,4 +114,13 @@ static struct smp_operations socfpga_smp_ops __initdata = {
#endif
};
+static struct smp_operations socfpga_a10_smp_ops __initdata = {
+ .smp_prepare_cpus = socfpga_smp_prepare_cpus,
+ .smp_boot_secondary = socfpga_a10_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = socfpga_cpu_die,
+#endif
+};
+
CPU_METHOD_OF_DECLARE(socfpga_smp, "altr,socfpga-smp", &socfpga_smp_ops);
+CPU_METHOD_OF_DECLARE(socfpga_a10_smp, "altr,socfpga-a10-smp", &socfpga_a10_smp_ops);