[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/arm/mach-hisi/hotplug.c b/src/kernel/linux/v4.14/arch/arm/mach-hisi/hotplug.c
new file mode 100644
index 0000000..909bb24
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/arm/mach-hisi/hotplug.c
@@ -0,0 +1,302 @@
+/*
+ * Copyright (c) 2013 Linaro Ltd.
+ * Copyright (c) 2013 Hisilicon Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/cpu.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <asm/cacheflush.h>
+#include <asm/smp_plat.h>
+#include "core.h"
+
+/* Sysctrl registers in Hi3620 SoC */
+#define SCISOEN 0xc0
+#define SCISODIS 0xc4
+#define SCPERPWREN 0xd0
+#define SCPERPWRDIS 0xd4
+#define SCCPUCOREEN 0xf4
+#define SCCPUCOREDIS 0xf8
+#define SCPERCTRL0 0x200
+#define SCCPURSTEN 0x410
+#define SCCPURSTDIS 0x414
+
+/*
+ * bit definition in SCISOEN/SCPERPWREN/...
+ *
+ * CPU2_ISO_CTRL (1 << 5)
+ * CPU3_ISO_CTRL (1 << 6)
+ * ...
+ */
+#define CPU2_ISO_CTRL (1 << 5)
+
+/*
+ * bit definition in SCPERCTRL0
+ *
+ * CPU0_WFI_MASK_CFG (1 << 28)
+ * CPU1_WFI_MASK_CFG (1 << 29)
+ * ...
+ */
+#define CPU0_WFI_MASK_CFG (1 << 28)
+
+/*
+ * bit definition in SCCPURSTEN/...
+ *
+ * CPU0_SRST_REQ_EN (1 << 0)
+ * CPU1_SRST_REQ_EN (1 << 1)
+ * ...
+ */
+#define CPU0_HPM_SRST_REQ_EN (1 << 22)
+#define CPU0_DBG_SRST_REQ_EN (1 << 12)
+#define CPU0_NEON_SRST_REQ_EN (1 << 4)
+#define CPU0_SRST_REQ_EN (1 << 0)
+
+#define HIX5HD2_PERI_CRG20 0x50
+#define CRG20_CPU1_RESET (1 << 17)
+
+#define HIX5HD2_PERI_PMC0 0x1000
+#define PMC0_CPU1_WAIT_MTCOMS_ACK (1 << 8)
+#define PMC0_CPU1_PMC_ENABLE (1 << 7)
+#define PMC0_CPU1_POWERDOWN (1 << 3)
+
+#define HIP01_PERI9 0x50
+#define PERI9_CPU1_RESET (1 << 1)
+
+enum {
+ HI3620_CTRL,
+ ERROR_CTRL,
+};
+
+static void __iomem *ctrl_base;
+static int id;
+
+static void set_cpu_hi3620(int cpu, bool enable)
+{
+ u32 val = 0;
+
+ if (enable) {
+ /* MTCMOS set */
+ if ((cpu == 2) || (cpu == 3))
+ writel_relaxed(CPU2_ISO_CTRL << (cpu - 2),
+ ctrl_base + SCPERPWREN);
+ udelay(100);
+
+ /* Enable core */
+ writel_relaxed(0x01 << cpu, ctrl_base + SCCPUCOREEN);
+
+ /* unreset */
+ val = CPU0_DBG_SRST_REQ_EN | CPU0_NEON_SRST_REQ_EN
+ | CPU0_SRST_REQ_EN;
+ writel_relaxed(val << cpu, ctrl_base + SCCPURSTDIS);
+ /* reset */
+ val |= CPU0_HPM_SRST_REQ_EN;
+ writel_relaxed(val << cpu, ctrl_base + SCCPURSTEN);
+
+ /* ISO disable */
+ if ((cpu == 2) || (cpu == 3))
+ writel_relaxed(CPU2_ISO_CTRL << (cpu - 2),
+ ctrl_base + SCISODIS);
+ udelay(1);
+
+ /* WFI Mask */
+ val = readl_relaxed(ctrl_base + SCPERCTRL0);
+ val &= ~(CPU0_WFI_MASK_CFG << cpu);
+ writel_relaxed(val, ctrl_base + SCPERCTRL0);
+
+ /* Unreset */
+ val = CPU0_DBG_SRST_REQ_EN | CPU0_NEON_SRST_REQ_EN
+ | CPU0_SRST_REQ_EN | CPU0_HPM_SRST_REQ_EN;
+ writel_relaxed(val << cpu, ctrl_base + SCCPURSTDIS);
+ } else {
+ /* wfi mask */
+ val = readl_relaxed(ctrl_base + SCPERCTRL0);
+ val |= (CPU0_WFI_MASK_CFG << cpu);
+ writel_relaxed(val, ctrl_base + SCPERCTRL0);
+
+ /* disable core*/
+ writel_relaxed(0x01 << cpu, ctrl_base + SCCPUCOREDIS);
+
+ if ((cpu == 2) || (cpu == 3)) {
+ /* iso enable */
+ writel_relaxed(CPU2_ISO_CTRL << (cpu - 2),
+ ctrl_base + SCISOEN);
+ udelay(1);
+ }
+
+ /* reset */
+ val = CPU0_DBG_SRST_REQ_EN | CPU0_NEON_SRST_REQ_EN
+ | CPU0_SRST_REQ_EN | CPU0_HPM_SRST_REQ_EN;
+ writel_relaxed(val << cpu, ctrl_base + SCCPURSTEN);
+
+ if ((cpu == 2) || (cpu == 3)) {
+ /* MTCMOS unset */
+ writel_relaxed(CPU2_ISO_CTRL << (cpu - 2),
+ ctrl_base + SCPERPWRDIS);
+ udelay(100);
+ }
+ }
+}
+
+static int hi3xxx_hotplug_init(void)
+{
+ struct device_node *node;
+
+ node = of_find_compatible_node(NULL, NULL, "hisilicon,sysctrl");
+ if (!node) {
+ id = ERROR_CTRL;
+ return -ENOENT;
+ }
+
+ ctrl_base = of_iomap(node, 0);
+ of_node_put(node);
+ if (!ctrl_base) {
+ id = ERROR_CTRL;
+ return -ENOMEM;
+ }
+
+ id = HI3620_CTRL;
+ return 0;
+}
+
+void hi3xxx_set_cpu(int cpu, bool enable)
+{
+ if (!ctrl_base) {
+ if (hi3xxx_hotplug_init() < 0)
+ return;
+ }
+
+ if (id == HI3620_CTRL)
+ set_cpu_hi3620(cpu, enable);
+}
+
+static bool hix5hd2_hotplug_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "hisilicon,cpuctrl");
+ if (!np)
+ return false;
+
+ ctrl_base = of_iomap(np, 0);
+ of_node_put(np);
+ if (!ctrl_base)
+ return false;
+
+ return true;
+}
+
+void hix5hd2_set_cpu(int cpu, bool enable)
+{
+ u32 val = 0;
+
+ if (!ctrl_base)
+ if (!hix5hd2_hotplug_init())
+ BUG();
+
+ if (enable) {
+ /* power on cpu1 */
+ val = readl_relaxed(ctrl_base + HIX5HD2_PERI_PMC0);
+ val &= ~(PMC0_CPU1_WAIT_MTCOMS_ACK | PMC0_CPU1_POWERDOWN);
+ val |= PMC0_CPU1_PMC_ENABLE;
+ writel_relaxed(val, ctrl_base + HIX5HD2_PERI_PMC0);
+ /* unreset */
+ val = readl_relaxed(ctrl_base + HIX5HD2_PERI_CRG20);
+ val &= ~CRG20_CPU1_RESET;
+ writel_relaxed(val, ctrl_base + HIX5HD2_PERI_CRG20);
+ } else {
+ /* power down cpu1 */
+ val = readl_relaxed(ctrl_base + HIX5HD2_PERI_PMC0);
+ val |= PMC0_CPU1_PMC_ENABLE | PMC0_CPU1_POWERDOWN;
+ val &= ~PMC0_CPU1_WAIT_MTCOMS_ACK;
+ writel_relaxed(val, ctrl_base + HIX5HD2_PERI_PMC0);
+
+ /* reset */
+ val = readl_relaxed(ctrl_base + HIX5HD2_PERI_CRG20);
+ val |= CRG20_CPU1_RESET;
+ writel_relaxed(val, ctrl_base + HIX5HD2_PERI_CRG20);
+ }
+}
+
+void hip01_set_cpu(int cpu, bool enable)
+{
+ unsigned int temp;
+ struct device_node *np;
+
+ if (!ctrl_base) {
+ np = of_find_compatible_node(NULL, NULL, "hisilicon,hip01-sysctrl");
+ BUG_ON(!np);
+ ctrl_base = of_iomap(np, 0);
+ of_node_put(np);
+ BUG_ON(!ctrl_base);
+ }
+
+ if (enable) {
+ /* reset on CPU1 */
+ temp = readl_relaxed(ctrl_base + HIP01_PERI9);
+ temp |= PERI9_CPU1_RESET;
+ writel_relaxed(temp, ctrl_base + HIP01_PERI9);
+
+ udelay(50);
+
+ /* unreset on CPU1 */
+ temp = readl_relaxed(ctrl_base + HIP01_PERI9);
+ temp &= ~PERI9_CPU1_RESET;
+ writel_relaxed(temp, ctrl_base + HIP01_PERI9);
+ }
+}
+
+static inline void cpu_enter_lowpower(void)
+{
+ unsigned int v;
+
+ flush_cache_all();
+
+ /*
+ * Turn off coherency and L1 D-cache
+ */
+ asm volatile(
+ " mrc p15, 0, %0, c1, c0, 1\n"
+ " bic %0, %0, #0x40\n"
+ " mcr p15, 0, %0, c1, c0, 1\n"
+ " mrc p15, 0, %0, c1, c0, 0\n"
+ " bic %0, %0, #0x04\n"
+ " mcr p15, 0, %0, c1, c0, 0\n"
+ : "=&r" (v)
+ : "r" (0)
+ : "cc");
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+void hi3xxx_cpu_die(unsigned int cpu)
+{
+ cpu_enter_lowpower();
+ hi3xxx_set_cpu_jump(cpu, phys_to_virt(0));
+ cpu_do_idle();
+
+ /* We should have never returned from idle */
+ panic("cpu %d unexpectedly exit from shutdown\n", cpu);
+}
+
+int hi3xxx_cpu_kill(unsigned int cpu)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(50);
+
+ while (hi3xxx_get_cpu_jump(cpu))
+ if (time_after(jiffies, timeout))
+ return 0;
+ hi3xxx_set_cpu(cpu, false);
+ return 1;
+}
+
+void hix5hd2_cpu_die(unsigned int cpu)
+{
+ flush_cache_all();
+ hix5hd2_set_cpu(cpu, false);
+}
+#endif