@@ -90,7 +90,7 @@ obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
obj-$(CONFIG_HAVE_IMX_SRC) += src.o
-ifdef CONFIG_SOC_IMX6
+ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),)
AFLAGS_headsmp.o :=-Wa,-march=armv7-a
obj-$(CONFIG_SMP) += headsmp.o platsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
@@ -157,5 +157,6 @@ static inline void imx_init_l2cache(void) {}
#endif
extern struct smp_operations imx_smp_ops;
+extern struct smp_operations ls1021a_smp_ops;
#endif
@@ -27,6 +27,7 @@ DT_MACHINE_START(LS1021A, "Freescale LS1021A")
#ifdef CONFIG_ZONE_DMA
.dma_zone_size = SZ_128M,
#endif
+ .smp = smp_ops(ls1021a_smp_ops),
.init_machine = ls1021a_init_machine,
.dt_compat = ls1021a_dt_compat,
.restart = mxc_restart,
@@ -16,6 +16,8 @@
#include <asm/page.h>
#include <asm/smp_scu.h>
#include <asm/mach/map.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include "common.h"
#include "hardware.h"
@@ -94,3 +96,33 @@ struct smp_operations imx_smp_ops __initdata = {
.cpu_kill = imx_cpu_kill,
#endif
};
+
+#define DCFG_CCSR_SCRATCHRW1 0x200
+
+static int ls1021a_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+
+ return 0;
+}
+
+static void __init ls1021a_smp_prepare_cpus(unsigned int max_cpus)
+{
+ struct device_node *np;
+ void __iomem *dcfg_base;
+ unsigned long paddr;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,ls1021a-dcfg");
+ dcfg_base = of_iomap(np, 0);
+ BUG_ON(!dcfg_base);
+
+ paddr = virt_to_phys(secondary_startup);
+ writel_relaxed(cpu_to_be32(paddr), dcfg_base + DCFG_CCSR_SCRATCHRW1);
+
+ iounmap(dcfg_base);
+}
+
+struct smp_operations ls1021a_smp_ops __initdata = {
+ .smp_prepare_cpus = ls1021a_smp_prepare_cpus,
+ .smp_boot_secondary = ls1021a_boot_secondary,
+};