ARM: hisi: enable smp for HiP01

Enable smp for HiP01 board.

Signed-off-by: Wang Long <long.wanglong@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
[olof: split off the dts change to a separate commit]
Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 50 insertions, 0 deletions

diff --git a/arch/arm/mach-hisi/platsmp.c b/arch/arm/mach-hisi/platsmp.c
index 4a70f5610a2c..8880c8e8b296 100644
--- a/arch/arm/mach-hisi/platsmp.c
+++ b/arch/arm/mach-hisi/platsmp.c
@@ -10,10 +10,12 @@
 #include <linux/smp.h>
 #include <linux/io.h>
 #include <linux/of_address.h>
+#include <linux/delay.h>
 
 #include <asm/cacheflush.h>
 #include <asm/smp_plat.h>
 #include <asm/smp_scu.h>
+#include <asm/mach/map.h>
 
 #include "core.h"
 
@@ -132,5 +134,53 @@ struct smp_operations hix5hd2_smp_ops __initdata = {
 #endif
 };
 
+
+#define SC_SCTL_REMAP_CLR      0x00000100
+#define HIP01_BOOT_ADDRESS     0x80000000
+#define REG_SC_CTRL            0x000
+
+void hip01_set_boot_addr(phys_addr_t start_addr, phys_addr_t jump_addr)
+{
+	void __iomem *virt;
+
+	virt = phys_to_virt(start_addr);
+
+	writel_relaxed(0xe51ff004, virt);
+	writel_relaxed(jump_addr, virt + 4);
+}
+
+static int hip01_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	phys_addr_t jumpaddr;
+	unsigned int remap_reg_value = 0;
+	struct device_node *node;
+
+
+	jumpaddr = virt_to_phys(hisi_secondary_startup);
+	hip01_set_boot_addr(HIP01_BOOT_ADDRESS, jumpaddr);
+
+	node = of_find_compatible_node(NULL, NULL, "hisilicon,hip01-sysctrl");
+	if (WARN_ON(!node))
+		return -1;
+	ctrl_base = of_iomap(node, 0);
+
+	/* set the secondary core boot from DDR */
+	remap_reg_value = readl_relaxed(ctrl_base + REG_SC_CTRL);
+	barrier();
+	remap_reg_value |= SC_SCTL_REMAP_CLR;
+	barrier();
+	writel_relaxed(remap_reg_value, ctrl_base + REG_SC_CTRL);
+
+	hip01_set_cpu(cpu, true);
+
+	return 0;
+}
+
+struct smp_operations hip01_smp_ops __initdata = {
+	.smp_prepare_cpus       = hisi_common_smp_prepare_cpus,
+	.smp_boot_secondary     = hip01_boot_secondary,
+};
+
 CPU_METHOD_OF_DECLARE(hi3xxx_smp, "hisilicon,hi3620-smp", &hi3xxx_smp_ops);
 CPU_METHOD_OF_DECLARE(hix5hd2_smp, "hisilicon,hix5hd2-smp", &hix5hd2_smp_ops);
+CPU_METHOD_OF_DECLARE(hip01_smp, "hisilicon,hip01-smp", &hip01_smp_ops);