Merge AArch64 libcpu and add some drivers for their bsps

1 files changed, 409 insertions, 0 deletions

diff --git a/libcpu/aarch64/common/interrupt.c b/libcpu/aarch64/common/interrupt.c
new file mode 100644
index 0000000000..c4e3f20b46
--- /dev/null
+++ b/libcpu/aarch64/common/interrupt.c
@@ -0,0 +1,409 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2013-07-06     Bernard      first version
+ * 2018-11-22     Jesven       add smp support
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include "interrupt.h"
+#include "gic.h"
+#include "armv8.h"
+#include "mmu.h"
+
+/* exception and interrupt handler table */
+struct rt_irq_desc isr_table[MAX_HANDLERS];
+
+#ifndef RT_USING_SMP
+/* Those variables will be accessed in ISR, so we need to share them. */
+rt_ubase_t rt_interrupt_from_thread        = 0;
+rt_ubase_t rt_interrupt_to_thread          = 0;
+rt_ubase_t rt_thread_switch_interrupt_flag = 0;
+#endif
+
+const unsigned int VECTOR_BASE = 0x00;
+extern int system_vectors;
+
+#ifdef RT_USING_SMP
+#define rt_interrupt_nest rt_cpu_self()->irq_nest
+#else
+extern volatile rt_uint8_t rt_interrupt_nest;
+#endif
+
+#ifndef BSP_USING_GIC
+static void default_isr_handler(int vector, void *param)
+{
+#ifdef RT_USING_SMP
+    rt_kprintf("cpu %d unhandled irq: %d\n", rt_hw_cpu_id(),vector);
+#else
+    rt_kprintf("unhandled irq: %d\n",vector);
+#endif
+}
+#endif
+
+void rt_hw_vector_init(void)
+{
+    rt_hw_set_current_vbar((rt_ubase_t)&system_vectors);
+}
+
+/**
+ * This function will initialize hardware interrupt
+ */
+void rt_hw_interrupt_init(void)
+{
+#ifndef BSP_USING_GIC
+    rt_uint32_t index;
+    /* initialize vector table */
+    rt_hw_vector_init();
+
+    /* initialize exceptions table */
+    rt_memset(isr_table, 0x00, sizeof(isr_table));
+
+    /* mask all of interrupts */
+    IRQ_DISABLE_BASIC = 0x000000ff;
+    IRQ_DISABLE1      = 0xffffffff;
+    IRQ_DISABLE2      = 0xffffffff;
+    for (index = 0; index < MAX_HANDLERS; index ++)
+    {
+        isr_table[index].handler = default_isr_handler;
+        isr_table[index].param = RT_NULL;
+#ifdef RT_USING_INTERRUPT_INFO
+        rt_strncpy(isr_table[index].name, "unknown", RT_NAME_MAX);
+        isr_table[index].counter = 0;
+#endif
+    }
+
+    /* init interrupt nest, and context in thread sp */
+    rt_interrupt_nest = 0;
+    rt_interrupt_from_thread = 0;
+    rt_interrupt_to_thread = 0;
+    rt_thread_switch_interrupt_flag = 0;
+#else
+    rt_uint64_t gic_cpu_base;
+    rt_uint64_t gic_dist_base;
+    rt_uint64_t gic_irq_start;
+
+    /* initialize vector table */
+    rt_hw_vector_init();
+
+    /* initialize exceptions table */
+    rt_memset(isr_table, 0x00, sizeof(isr_table));
+
+    /* initialize ARM GIC */
+    gic_dist_base = platform_get_gic_dist_base();
+    gic_cpu_base = platform_get_gic_cpu_base();
+
+    gic_irq_start = GIC_IRQ_START;
+
+    arm_gic_dist_init(0, gic_dist_base, gic_irq_start);
+    arm_gic_cpu_init(0, gic_cpu_base);
+#endif
+}
+
+/**
+ * This function will mask a interrupt.
+ * @param vector the interrupt number
+ */
+void rt_hw_interrupt_mask(int vector)
+{
+#ifndef BSP_USING_GIC
+    if (vector < 32)
+    {
+        IRQ_DISABLE1 = (1 << vector);
+    }
+    else if (vector < 64)
+    {
+        vector = vector % 32;
+        IRQ_DISABLE2 = (1 << vector);
+    }
+    else
+    {
+        vector = vector - 64;
+        IRQ_DISABLE_BASIC = (1 << vector);
+    }
+#else
+    arm_gic_mask(0, vector);
+#endif
+}
+
+/**
+ * This function will un-mask a interrupt.
+ * @param vector the interrupt number
+ */
+void rt_hw_interrupt_umask(int vector)
+{
+#ifndef BSP_USING_GIC
+if (vector < 32)
+    {
+        IRQ_ENABLE1 = (1 << vector);
+    }
+    else if (vector < 64)
+    {
+        vector = vector % 32;
+        IRQ_ENABLE2 = (1 << vector);
+    }
+    else
+    {
+        vector = vector - 64;
+        IRQ_ENABLE_BASIC = (1 << vector);
+    }
+#else
+    arm_gic_umask(0, vector);
+#endif
+}
+
+/**
+ * This function returns the active interrupt number.
+ * @param none
+ */
+int rt_hw_interrupt_get_irq(void)
+{
+#ifdef BSP_USING_GIC
+    return arm_gic_get_active_irq(0);
+#else
+    return 0;
+#endif
+}
+
+/**
+ * This function acknowledges the interrupt.
+ * @param vector the interrupt number
+ */
+void rt_hw_interrupt_ack(int vector)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_ack(0, vector);
+#endif
+}
+
+/**
+ * This function set interrupt CPU targets.
+ * @param vector:   the interrupt number
+ *        cpu_mask: target cpus mask, one bit for one core
+ */
+void rt_hw_interrupt_set_target_cpus(int vector, unsigned int cpu_mask)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_set_cpu(0, vector, cpu_mask);
+#endif
+}
+
+/**
+ * This function get interrupt CPU targets.
+ * @param vector: the interrupt number
+ * @return target cpus mask, one bit for one core
+ */
+unsigned int rt_hw_interrupt_get_target_cpus(int vector)
+{
+#ifdef BSP_USING_GIC
+    return arm_gic_get_target_cpu(0, vector);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function set interrupt triger mode.
+ * @param vector: the interrupt number
+ *        mode:   interrupt triger mode; 0: level triger, 1: edge triger
+ */
+void rt_hw_interrupt_set_triger_mode(int vector, unsigned int mode)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_set_configuration(0, vector, mode);
+#endif
+}
+
+/**
+ * This function get interrupt triger mode.
+ * @param vector: the interrupt number
+ * @return interrupt triger mode; 0: level triger, 1: edge triger
+ */
+unsigned int rt_hw_interrupt_get_triger_mode(int vector)
+{
+#ifdef BSP_USING_GIC
+    return arm_gic_get_configuration(0, vector);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function set interrupt pending flag.
+ * @param vector: the interrupt number
+ */
+void rt_hw_interrupt_set_pending(int vector)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_set_pending_irq(0, vector);
+#endif
+}
+
+/**
+ * This function get interrupt pending flag.
+ * @param vector: the interrupt number
+ * @return interrupt pending flag, 0: not pending; 1: pending
+ */
+unsigned int rt_hw_interrupt_get_pending(int vector)
+{
+#ifdef BSP_USING_GIC
+    return arm_gic_get_pending_irq(0, vector);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function clear interrupt pending flag.
+ * @param vector: the interrupt number
+ */
+void rt_hw_interrupt_clear_pending(int vector)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_clear_pending_irq(0, vector);
+#endif
+}
+
+/**
+ * This function set interrupt priority value.
+ * @param vector: the interrupt number
+ *        priority: the priority of interrupt to set
+ */
+void rt_hw_interrupt_set_priority(int vector, unsigned int priority)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_set_priority(0, vector, priority);
+#endif
+}
+
+/**
+ * This function get interrupt priority.
+ * @param vector: the interrupt number
+ * @return interrupt priority value
+ */
+unsigned int rt_hw_interrupt_get_priority(int vector)
+{
+#ifdef BSP_USING_GIC
+    return arm_gic_get_priority(0, vector);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function set priority masking threshold.
+ * @param priority: priority masking threshold
+ */
+void rt_hw_interrupt_set_priority_mask(unsigned int priority)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_set_interface_prior_mask(0, priority);
+#endif
+}
+
+/**
+ * This function get priority masking threshold.
+ * @param none
+ * @return priority masking threshold
+ */
+unsigned int rt_hw_interrupt_get_priority_mask(void)
+{
+#ifdef BSP_USING_GIC
+    return arm_gic_get_interface_prior_mask(0);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function set priority grouping field split point.
+ * @param bits: priority grouping field split point
+ * @return 0: success; -1: failed
+ */
+int rt_hw_interrupt_set_prior_group_bits(unsigned int bits)
+{
+#ifdef BSP_USING_GIC
+    int status;
+
+    if (bits < 8)
+    {
+        arm_gic_set_binary_point(0, (7 - bits));
+        status = 0;
+    }
+    else
+    {
+        status = -1;
+    }
+
+    return (status);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function get priority grouping field split point.
+ * @param none
+ * @return priority grouping field split point
+ */
+unsigned int rt_hw_interrupt_get_prior_group_bits(void)
+{
+#ifdef BSP_USING_GIC
+    unsigned int bp;
+
+    bp = arm_gic_get_binary_point(0) & 0x07;
+
+    return (7 - bp);
+#else
+    return -RT_ERROR;
+#endif
+}
+
+/**
+ * This function will install a interrupt service routine to a interrupt.
+ * @param vector the interrupt number
+ * @param new_handler the interrupt service routine to be installed
+ * @param old_handler the old interrupt service routine
+ */
+rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
+        void *param, const char *name)
+{
+    rt_isr_handler_t old_handler = RT_NULL;
+
+    if (vector < MAX_HANDLERS)
+    {
+        old_handler = isr_table[vector].handler;
+
+        if (handler != RT_NULL)
+        {
+#ifdef RT_USING_INTERRUPT_INFO
+            rt_strncpy(isr_table[vector].name, name, RT_NAME_MAX);
+#endif /* RT_USING_INTERRUPT_INFO */
+            isr_table[vector].handler = handler;
+            isr_table[vector].param = param;
+        }
+    }
+
+    return old_handler;
+}
+
+#ifdef RT_USING_SMP
+void rt_hw_ipi_send(int ipi_vector, unsigned int cpu_mask)
+{
+#ifdef BSP_USING_GIC
+    arm_gic_send_sgi(0, ipi_vector, cpu_mask, 0);
+#endif
+}
+
+void rt_hw_ipi_handler_install(int ipi_vector, rt_isr_handler_t ipi_isr_handler)
+{
+    /* note: ipi_vector maybe different with irq_vector */
+    rt_hw_interrupt_install(ipi_vector, ipi_isr_handler, 0, "IPI_HANDLER");
+}
+#endif
+