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-rw-r--r--libcpu/aarch64/SConscript3
-rw-r--r--libcpu/aarch64/common/SConscript24
-rw-r--r--libcpu/aarch64/common/armv8.h (renamed from libcpu/aarch64/cortex-a53/armv8.h)0
-rw-r--r--libcpu/aarch64/common/cache.S (renamed from libcpu/aarch64/cortex-a53/cache.S)0
-rw-r--r--libcpu/aarch64/common/context_gcc.S (renamed from libcpu/aarch64/cortex-a53/context_gcc.S)0
-rw-r--r--libcpu/aarch64/common/cp15.h (renamed from libcpu/aarch64/cortex-a53/cp15.h)0
-rw-r--r--libcpu/aarch64/common/cpu.c (renamed from libcpu/aarch64/cortex-a53/cpu.c)0
-rw-r--r--libcpu/aarch64/common/cpu_gcc.S (renamed from libcpu/aarch64/cortex-a53/cpu_gcc.S)0
-rw-r--r--libcpu/aarch64/common/gic/SConscript24
-rw-r--r--libcpu/aarch64/common/gic/gic_pl400.c368
-rw-r--r--libcpu/aarch64/common/gic/gic_pl400.h35
-rw-r--r--libcpu/aarch64/common/mmu.c (renamed from libcpu/aarch64/cortex-a53/mmu.c)0
-rw-r--r--libcpu/aarch64/common/mmu.h (renamed from libcpu/aarch64/cortex-a53/mmu.h)0
-rw-r--r--libcpu/aarch64/common/startup_gcc.S (renamed from libcpu/aarch64/cortex-a53/startup_gcc.S)0
-rw-r--r--libcpu/aarch64/common/vector_gcc.S (renamed from libcpu/aarch64/cortex-a53/vector_gcc.S)0
-rw-r--r--libcpu/aarch64/cortex-a53/SConscript15
-rw-r--r--libcpu/aarch64/cortex-a53/interrupt.h6
-rw-r--r--libcpu/aarch64/cortex-a57/SConscript13
-rw-r--r--libcpu/aarch64/cortex-a57/entry_point.S111
-rw-r--r--libcpu/aarch64/cortex-a57/interrupt.c73
-rw-r--r--libcpu/aarch64/cortex-a57/interrupt.h27
-rw-r--r--libcpu/aarch64/cortex-a57/stack.c90
-rw-r--r--libcpu/aarch64/cortex-a57/trap.c98
23 files changed, 874 insertions, 13 deletions
diff --git a/libcpu/aarch64/SConscript b/libcpu/aarch64/SConscript
index 453afe4b3e..5fca2b473b 100644
--- a/libcpu/aarch64/SConscript
+++ b/libcpu/aarch64/SConscript
@@ -9,6 +9,9 @@ cwd = GetCurrentDir()
group = []
list = os.listdir(cwd)
+# add common code files
+group = group + SConscript(os.path.join('common', 'SConscript'))
+
# cpu porting code files
if rtconfig.CPU != 'common':
group = group + SConscript(os.path.join(rtconfig.CPU, 'SConscript'))
diff --git a/libcpu/aarch64/common/SConscript b/libcpu/aarch64/common/SConscript
new file mode 100644
index 0000000000..72fb8e26c3
--- /dev/null
+++ b/libcpu/aarch64/common/SConscript
@@ -0,0 +1,24 @@
+# RT-Thread building script for component
+
+from building import *
+
+Import('rtconfig')
+
+cwd = GetCurrentDir()
+src = Glob('*.c') + Glob('*.cpp') + Glob('*.S')
+CPPPATH = [cwd]
+
+group = DefineGroup('common', src, depend = [''], CPPPATH = CPPPATH)
+
+# build for sub-directory
+list = os.listdir(cwd)
+objs = []
+
+for d in list:
+ path = os.path.join(cwd, d)
+ if os.path.isfile(os.path.join(path, 'SConscript')):
+ objs = objs + SConscript(os.path.join(d, 'SConscript'))
+group = group + objs
+
+
+Return('group')
diff --git a/libcpu/aarch64/cortex-a53/armv8.h b/libcpu/aarch64/common/armv8.h
index 4350890544..4350890544 100644
--- a/libcpu/aarch64/cortex-a53/armv8.h
+++ b/libcpu/aarch64/common/armv8.h
diff --git a/libcpu/aarch64/cortex-a53/cache.S b/libcpu/aarch64/common/cache.S
index 7f295a2b02..7f295a2b02 100644
--- a/libcpu/aarch64/cortex-a53/cache.S
+++ b/libcpu/aarch64/common/cache.S
diff --git a/libcpu/aarch64/cortex-a53/context_gcc.S b/libcpu/aarch64/common/context_gcc.S
index 934db7ed84..934db7ed84 100644
--- a/libcpu/aarch64/cortex-a53/context_gcc.S
+++ b/libcpu/aarch64/common/context_gcc.S
diff --git a/libcpu/aarch64/cortex-a53/cp15.h b/libcpu/aarch64/common/cp15.h
index f3ffd6f857..f3ffd6f857 100644
--- a/libcpu/aarch64/cortex-a53/cp15.h
+++ b/libcpu/aarch64/common/cp15.h
diff --git a/libcpu/aarch64/cortex-a53/cpu.c b/libcpu/aarch64/common/cpu.c
index 962a53a071..962a53a071 100644
--- a/libcpu/aarch64/cortex-a53/cpu.c
+++ b/libcpu/aarch64/common/cpu.c
diff --git a/libcpu/aarch64/cortex-a53/cpu_gcc.S b/libcpu/aarch64/common/cpu_gcc.S
index b8c8b8768c..b8c8b8768c 100644
--- a/libcpu/aarch64/cortex-a53/cpu_gcc.S
+++ b/libcpu/aarch64/common/cpu_gcc.S
diff --git a/libcpu/aarch64/common/gic/SConscript b/libcpu/aarch64/common/gic/SConscript
new file mode 100644
index 0000000000..b114ba7678
--- /dev/null
+++ b/libcpu/aarch64/common/gic/SConscript
@@ -0,0 +1,24 @@
+# RT-Thread building script for component
+
+from building import *
+
+cwd = GetCurrentDir()
+CPPPATH = [cwd]
+
+gic400_group = Split('''
+gic_pl400.c
+''')
+
+gic500_group = Split('''
+gic_pl500.c
+''')
+
+src = ()
+if GetDepend('BSP_USING_GIC400'):
+ src = gic400_group
+if GetDepend('BSP_USING_GIC500'):
+ src = gic500_group
+
+group = DefineGroup('gic', src, depend = ['BSP_USING_GIC'], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/libcpu/aarch64/common/gic/gic_pl400.c b/libcpu/aarch64/common/gic/gic_pl400.c
new file mode 100644
index 0000000000..eb35c5b2a4
--- /dev/null
+++ b/libcpu/aarch64/common/gic/gic_pl400.c
@@ -0,0 +1,368 @@
+/*
+ * Copyright 2014, General Dynamics C4 Systems
+ *
+ * This software may be distributed and modified according to the terms of
+ * the GNU General Public License version 2. Note that NO WARRANTY is provided.
+ * See "LICENSE_GPLv2.txt" for details.
+ *
+ * @TAG(GD_GPL)
+ */
+
+#include "gic_pl400.h"
+#include "iomap.h"
+
+#define BIT(n) (1ul<<(n))
+#define MASK(n) (BIT(n)-1ul)
+
+/* Setters/getters helpers */
+#define IRQ_REG(IRQ) ((IRQ) / 32)
+#define IRQ_BIT(IRQ) BIT((IRQ) % 32)
+#define IRQ_MASK MASK(10)
+#define IS_IRQ_VALID(X) (((X)&IRQ_MASK) < SPECIAL_IRQ_START)
+
+#define CPU(X) (1<<(X))
+#define TARGET_CPU_ALLINT(CPU) ( \
+ ( ((CPU)&0xff)<<0 ) |\
+ ( ((CPU)&0xff)<<8 ) |\
+ ( ((CPU)&0xff)<<16 ) |\
+ ( ((CPU)&0xff)<<24 ) \
+ )
+#define TARGET_CPU0_ALLINT TARGET_CPU_ALLINT(CPU(0))
+
+
+#define IRQ_SET_ALL 0xffffffff;
+
+/* Special IRQ's */
+#define SPECIAL_IRQ_START 1020
+#define IRQ_NONE 1023
+
+/* Memory map for GIC distributor */
+struct gic_dist_map {
+ uint32_t enable; /* 0x000 */
+ uint32_t ic_type; /* 0x004 */
+ uint32_t dist_ident; /* 0x008 */
+ uint32_t res1[29]; /* [0x00C, 0x080) */
+
+ uint32_t group[32]; /* [0x080, 0x100) */
+
+ uint32_t enable_set[32]; /* [0x100, 0x180) */
+ uint32_t enable_clr[32]; /* [0x180, 0x200) */
+ uint32_t pending_set[32]; /* [0x200, 0x280) */
+ uint32_t pending_clr[32]; /* [0x280, 0x300) */
+ uint32_t active[32]; /* [0x300, 0x380) */
+ uint32_t active_clr[32]; /* [0x380, 0x400) */
+
+ uint32_t priority[255]; /* [0x400, 0x7FC) */
+ uint32_t res2; /* 0x7FC */
+
+ uint32_t targets[255]; /* [0x800, 0xBFC) */
+ uint32_t res3; /* 0xBFC */
+
+ uint32_t config[64]; /* [0xC00, 0xD00) */
+
+ uint32_t ppi_status; /* [0xD00, 0xD04) */
+ uint32_t spi_status[15]; /* [0xD04, 0xD40) */
+ uint32_t res4[112]; /* [0xD40, 0xF00) */
+
+ uint32_t sgi_control; /* 0xF00 */
+ uint32_t res5[3]; /* [0xF04, 0xF10) */
+ uint32_t sgi_pending_clr[4]; /* [0xF10, 0xF20) */
+ uint32_t sgi_pending_set[4]; /* [0xF20, 0xF30) */
+ uint32_t res10[40]; /* [0xF30, 0xFD0) */
+
+ uint32_t periph_id[8]; /* [0xFD0, 0xFF0) */
+ uint32_t component_id[4]; /* [0xFF0, 0xFFF] */
+};
+
+
+/* Memory map for GIC cpu interface */
+struct gic_cpu_iface_map {
+ uint32_t icontrol; /* 0x000 */
+ uint32_t pri_msk_c; /* 0x004 */
+ uint32_t bp_c; /* 0x008 */
+ uint32_t int_ack; /* 0x00C */
+ uint32_t eoi; /* 0x010 */
+ uint32_t run_priority; /* 0x014 */
+ uint32_t hi_pend; /* 0x018 */
+ uint32_t ns_alias_bp_c; /* 0x01C */
+ uint32_t ns_alias_ack; /* 0x020 GIC_PL400 only */
+ uint32_t ns_alias_eoi; /* 0x024 GIC_PL400 only */
+ uint32_t ns_alias_hi_pend; /* 0x028 GIC_PL400 only */
+
+ uint32_t res1[41]; /* [0x02C, 0x0D0) */
+ uint32_t active_priority[4]; /* [0x0D0, 0xC0] GIC_PL400 only */
+ uint32_t ns_active_priority[4]; /* [0xE0,0xF0] GIC_PL400 only */
+ uint32_t res4[3]; /* [0xF0, 0xFC] */
+
+ uint32_t cpu_if_ident; /* 0x0FC */
+ uint32_t deactive; /* [0x1000] */
+};
+
+volatile struct gic_dist_map *gic_dist =
+ (volatile struct gic_dist_map*)(GIC_PL400_DISTRIBUTOR_PPTR);
+
+volatile struct gic_cpu_iface_map *gic_cpuiface =
+ (volatile struct gic_cpu_iface_map*)(GIC_PL400_CONTROLLER_PPTR);
+
+/* Helpers */
+static inline int
+is_irq_pending(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ return !!(gic_dist->pending_set[word] & BIT(bit));
+}
+
+static inline int
+is_irq_active(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ return !!(gic_dist->active[word] & BIT(bit));
+}
+
+static inline int
+is_irq_enabled(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ return !!(gic_dist->enable_set[word] & BIT(bit));
+}
+
+static inline int
+is_irq_edge_triggered(irq_t irq)
+{
+ int word = irq / 16;
+ int bit = ((irq & 0xf) * 2);
+ return !!(gic_dist->config[word] & BIT(bit + 1));
+}
+
+static inline int
+is_irq_1_N(irq_t irq)
+{
+ int word = irq / 16;
+ int bit = ((irq & 0xf) * 2);
+ return !!(gic_dist->config[word] & BIT(bit + 0));
+}
+
+static inline int
+is_irq_N_N(irq_t irq)
+{
+ return !(is_irq_1_N(irq));
+}
+
+static inline void
+dist_pending_clr(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ /* Using |= here is detrimental to your health */
+ gic_dist->pending_clr[word] = BIT(bit);
+}
+
+static inline void
+dist_pending_set(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ gic_dist->pending_set[word] = BIT(bit);
+}
+
+static inline void
+dist_enable_clr(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ /* Using |= here is detrimental to your health */
+ gic_dist->enable_clr[word] = BIT(bit);
+}
+
+static inline void
+dist_enable_set(irq_t irq)
+{
+ int word = irq / 32;
+ int bit = irq & 0x1f;
+ gic_dist->enable_set[word] = BIT(bit);
+}
+
+/**
+ DONT_TRANSLATE
+ */
+static void dist_init(void)
+{
+ int i;
+ int nirqs = 32 * ((gic_dist->ic_type & 0x1f) + 1);
+ gic_dist->enable = 0;
+
+#if 0
+ /* configure to group 0 for security */
+ for (i = 0; i < nirqs; i += 32) {
+ gic_dist->group[i / 32] = 0xffffffff;
+ }
+#endif
+
+ for (i = 0; i < nirqs; i += 32) {
+ /* disable */
+ gic_dist->enable_clr[i / 32] = IRQ_SET_ALL;
+ /* clear pending */
+ gic_dist->pending_clr[i / 32] = IRQ_SET_ALL;
+ }
+
+ /* reset interrupts priority */
+ for (i = 32; i < nirqs; i += 4) {
+ gic_dist->priority[i / 4] = 0x0;
+ }
+
+ /*
+ * reset int target to cpu 0
+ * (Should really query which processor we're running on and use that)
+ */
+ for (i = 0; i < nirqs; i += 4) {
+ gic_dist->targets[i / 4] = TARGET_CPU0_ALLINT;
+ }
+
+ /* level-triggered, 1-N */
+ for (i = 64; i < nirqs; i += 32) {
+ gic_dist->config[i / 32] = 0;
+ //gic_dist->config[i / 32] = 0x55555555;
+ }
+ /* enable the int controller */
+ gic_dist->enable = 1;
+}
+
+/**
+ DONT_TRANSLATE
+ */
+static void cpu_iface_init(void)
+{
+ uint32_t i;
+
+ /* For non-Exynos4, the registers are banked per CPU, need to clear them */
+ gic_dist->enable_clr[0] = IRQ_SET_ALL;
+ gic_dist->pending_clr[0] = IRQ_SET_ALL;
+ gic_dist->priority[0] = 0x00;
+ /* put everything in group 0 */
+
+ /* clear any software generated interrupts */
+ for (i = 0; i < 16; i += 4) {
+ gic_dist->sgi_pending_clr[i / 4] = IRQ_SET_ALL;
+ }
+
+ gic_cpuiface->icontrol = 0;
+ gic_cpuiface->pri_msk_c = 0x000000f0;
+ gic_cpuiface->bp_c = 0x00000003;
+
+ while (((i = gic_cpuiface->int_ack) & IRQ_MASK) != IRQ_NONE) {
+ gic_cpuiface->eoi = i;
+ }
+ gic_cpuiface->icontrol = 0x1;
+}
+
+/**
+ DONT_TRANSLATE
+ */
+void initIRQController(void)
+{
+ dist_init();
+ cpu_iface_init();
+}
+
+
+
+/*
+ * The only sane way to get an GIC IRQ number that can be properly
+ * ACKED later is through the int_ack register. Unfortunately, reading
+ * this register changes the interrupt state to pending so future
+ * reads will not return the same value For this reason, we have a
+ * global variable to store the IRQ number.
+ */
+static uint32_t active_irq = IRQ_NONE;
+
+/**
+ DONT_TRANSLATE
+ */
+interrupt_t
+getActiveIRQ(void)
+{
+ uint32_t irq;
+ if (!IS_IRQ_VALID(active_irq)) {
+ active_irq = gic_cpuiface->int_ack;
+ }
+
+ if (IS_IRQ_VALID(active_irq)) {
+ irq = active_irq & IRQ_MASK;
+ } else {
+ irq = 1023;
+ }
+
+ return irq;
+}
+
+/*
+ * GIC has 4 states: pending->active(+pending)->inactive
+ * seL4 expects two states: active->inactive.
+ * We ignore the active state in GIC to conform
+ */
+/**
+ DONT_TRANSLATE
+ */
+bool_t
+isIRQPending(void)
+{
+ return IS_IRQ_VALID(gic_cpuiface->hi_pend);
+}
+
+
+/**
+ DONT_TRANSLATE
+ */
+void
+maskInterrupt(bool_t disable, interrupt_t irq)
+{
+ if (disable) {
+ dist_enable_clr(irq);
+ } else {
+ dist_enable_set(irq);
+ }
+}
+
+/**
+ DONT_TRANSLATE
+ */
+void
+ackInterrupt(irq_t irq)
+{
+ if (!(IS_IRQ_VALID(active_irq) && (active_irq & IRQ_MASK) == irq)) {
+ return;
+ }
+ if (is_irq_edge_triggered(irq)) {
+ dist_pending_clr(irq);
+ }
+ gic_cpuiface->eoi = active_irq;
+ active_irq = IRQ_NONE;
+}
+
+void
+handleSpuriousIRQ(void)
+{
+}
+
+void rt_hw_interrupt_mask(int vector)
+{
+ maskInterrupt(1, vector);
+}
+
+void rt_hw_interrupt_umask(int vector)
+{
+ maskInterrupt(0, vector);
+}
+
+int rt_hw_interrupt_get_irq(void)
+{
+ return getActiveIRQ();
+}
+
+void rt_hw_interrupt_ack(int fiq_irq)
+{
+ return ackInterrupt(fiq_irq);
+}
diff --git a/libcpu/aarch64/common/gic/gic_pl400.h b/libcpu/aarch64/common/gic/gic_pl400.h
new file mode 100644
index 0000000000..a43583bd7c
--- /dev/null
+++ b/libcpu/aarch64/common/gic/gic_pl400.h
@@ -0,0 +1,35 @@
+
+#ifndef __ARCH_MACHINE_GIC_PL400_H
+#define __ARCH_MACHINE_GIC_PL400_H
+
+#include <stdint.h>
+
+typedef uint16_t interrupt_t;
+typedef uint16_t irq_t;
+typedef uint64_t bool_t;
+
+/** MODIFIES: [*] */
+interrupt_t getActiveIRQ(void);
+/** MODIFIES: [*] */
+interrupt_t getPendingIRQ(void);
+/** MODIFIES: [*] */
+bool_t isIRQPending(void);
+/** MODIFIES: [*] */
+void maskInterrupt(bool_t disable, interrupt_t irq);
+/** MODIFIES: [*] */
+void ackInterrupt(irq_t irq);
+/** MODIFIES: [*] */
+static inline void setInterruptMode(irq_t irq, bool_t levelTrigger, bool_t polarityLow) { }
+
+/** MODIFIES: [*] */
+void initIRQController(void);
+
+void handleSpuriousIRQ(void);
+
+void rt_hw_interrupt_umask(int vector);
+
+int rt_hw_interrupt_get_irq(void);
+
+void rt_hw_interrupt_ack(int fiq_irq);
+#endif /* !__ARCH_MACHINE_GIC400_H */
+
diff --git a/libcpu/aarch64/cortex-a53/mmu.c b/libcpu/aarch64/common/mmu.c
index b799143084..b799143084 100644
--- a/libcpu/aarch64/cortex-a53/mmu.c
+++ b/libcpu/aarch64/common/mmu.c
diff --git a/libcpu/aarch64/cortex-a53/mmu.h b/libcpu/aarch64/common/mmu.h
index 6a66472c79..6a66472c79 100644
--- a/libcpu/aarch64/cortex-a53/mmu.h
+++ b/libcpu/aarch64/common/mmu.h
diff --git a/libcpu/aarch64/cortex-a53/startup_gcc.S b/libcpu/aarch64/common/startup_gcc.S
index ea4268148c..ea4268148c 100644
--- a/libcpu/aarch64/cortex-a53/startup_gcc.S
+++ b/libcpu/aarch64/common/startup_gcc.S
diff --git a/libcpu/aarch64/cortex-a53/vector_gcc.S b/libcpu/aarch64/common/vector_gcc.S
index fc88cce7f8..fc88cce7f8 100644
--- a/libcpu/aarch64/cortex-a53/vector_gcc.S
+++ b/libcpu/aarch64/common/vector_gcc.S
diff --git a/libcpu/aarch64/cortex-a53/SConscript b/libcpu/aarch64/cortex-a53/SConscript
index 75e170a0cf..c6a4817802 100644
--- a/libcpu/aarch64/cortex-a53/SConscript
+++ b/libcpu/aarch64/cortex-a53/SConscript
@@ -1,16 +1,13 @@
+# RT-Thread building script for component
+
from building import *
+Import('rtconfig')
+
cwd = GetCurrentDir()
-src = Glob('*.c') + Glob('*.cpp')
-asm_src = Split('''
-context_gcc.S
-vector_gcc.S
-entry_point.S
-cpu_gcc.S
-cache.S
-''')
+src = Glob('*.c') + Glob('*.cpp') + Glob('*.S')
CPPPATH = [cwd]
-group = DefineGroup('cpu', src + asm_src, depend = [''], CPPPATH = CPPPATH)
+group = DefineGroup('common', src, depend = [''], CPPPATH = CPPPATH)
Return('group')
diff --git a/libcpu/aarch64/cortex-a53/interrupt.h b/libcpu/aarch64/cortex-a53/interrupt.h
index 3533d3818c..8e741ed4e6 100644
--- a/libcpu/aarch64/cortex-a53/interrupt.h
+++ b/libcpu/aarch64/cortex-a53/interrupt.h
@@ -1,11 +1,11 @@
-
/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
- * Date Author Notes
+ * Date Author Notes
+ * 2020-04-16 bigmagic first version
*/
#ifndef __INTERRUPT_H__
@@ -19,8 +19,6 @@
#define INT_IRQ 0x00
#define INT_FIQ 0x01
-//void rt_hw_vector_init(void);
-
void rt_hw_interrupt_init(void);
void rt_hw_interrupt_mask(int vector);
void rt_hw_interrupt_umask(int vector);
diff --git a/libcpu/aarch64/cortex-a57/SConscript b/libcpu/aarch64/cortex-a57/SConscript
new file mode 100644
index 0000000000..c6a4817802
--- /dev/null
+++ b/libcpu/aarch64/cortex-a57/SConscript
@@ -0,0 +1,13 @@
+# RT-Thread building script for component
+
+from building import *
+
+Import('rtconfig')
+
+cwd = GetCurrentDir()
+src = Glob('*.c') + Glob('*.cpp') + Glob('*.S')
+CPPPATH = [cwd]
+
+group = DefineGroup('common', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')
diff --git a/libcpu/aarch64/cortex-a57/entry_point.S b/libcpu/aarch64/cortex-a57/entry_point.S
new file mode 100644
index 0000000000..6d2c69226b
--- /dev/null
+++ b/libcpu/aarch64/cortex-a57/entry_point.S
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2006-2020, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Date Author Notes
+ * 2020-01-15 bigmagic the first version
+ */
+
+.section ".text.entrypoint"
+
+.set EL1_stack, __el1_stack
+
+.global _start
+
+// This symbol is set to 0x80000 in ld script. That is the address that raspi3's firmware
+// loads 'kernel8.img' file in.
+_start:
+ // read cpu id, stop slave cores
+ mrs x1, mpidr_el1 // MPIDR_EL1: Multi-Processor Affinity Register
+ and x1, x1, #3
+ cbz x1, .L__cpu_0 // .L prefix is the local label in ELF
+
+ // cpu id > 0, stop
+ // cpu id == 0 will also goto here after returned from entry() if possible
+.L__current_cpu_idle:
+ wfe
+ b .L__current_cpu_idle
+
+.L__cpu_0: // cpu id == 0
+
+ // set stack before our code
+
+ /* Define stack pointer for current exception level */
+ // ldr x2, =EL1_stack
+ // mov sp, x2
+
+ ldr x1, =_start
+
+ // set up EL1
+ mrs x0, CurrentEL // CurrentEL Register. bit 2, 3. Others reserved
+ and x0, x0, #12 // clear reserved bits
+
+ // running at EL3?
+ cmp x0, #12 // 1100b. So, EL3
+ bne .L__not_in_el3 // 11? !EL3 -> 5:
+
+ // should never be executed, just for completeness. (EL3)
+ mov x2, #0x5b1
+ msr scr_el3, x2 // SCR_ELn Secure Configuration Register
+ mov x2, #0x3c9
+ msr spsr_el3, x2 // SPSR_ELn. Saved Program Status Register. 1111001001
+ adr x2, .L__not_in_el3
+ msr elr_el3, x2
+ eret // Exception Return: from EL3, continue from .L__not_in_el3
+
+ // running at EL2 or EL1
+.L__not_in_el3:
+ cmp x0, #4 // 0x04 0100 EL1
+ beq .L__in_el1 // EL1 -> 5:
+
+ // in EL2
+ msr sp_el1, x1 // Set sp of EL1 to _start
+
+ // enable CNTP for EL1
+ mrs x0, cnthctl_el2 // Counter-timer Hypervisor Control register
+ orr x0, x0, #3
+ msr cnthctl_el2, x0
+ msr cntvoff_el2, xzr
+
+ // enable AArch64 in EL1
+ mov x0, #(1 << 31) // AArch64
+ orr x0, x0, #(1 << 1) // SWIO hardwired on Pi3
+ msr hcr_el2, x0
+ mrs x0, hcr_el2
+
+ // change execution level to EL1
+ mov x2, #0x3c4
+ msr spsr_el2, x2 // 1111000100
+ adr x2, .L__in_el1
+ msr elr_el2, x2
+ eret // exception return. from EL2. continue from .L__in_el1
+
+.L__in_el1:
+ mov sp, x1 // in EL1. Set sp to _start
+
+ // Set CPACR_EL1 (Architecture Feature Access Control Register) to avoid trap from SIMD or float point instruction
+ mov x1, #0x00300000 // Don't trap any SIMD/FP instructions in both EL0 and EL1
+ msr cpacr_el1, x1
+
+ mrs x1, sctlr_el1
+ orr x1, x1, #(1 << 12)
+ bic x1, x1, #(3 << 3)
+ bic x1, x1, #(1 << 1)
+ msr sctlr_el1, x1
+
+ // clear bss
+ ldr x1, =__bss_start
+ ldr w2, =__bss_size
+
+.L__clean_bss_loop:
+ cbz w2, .L__jump_to_entry
+ str xzr, [x1], #8
+ sub w2, w2, #1
+ cbnz w2, .L__clean_bss_loop
+
+ // jump to C code, should not return
+.L__jump_to_entry:
+ bl entry
+ // for failsafe, halt this core too
+ b .L__current_cpu_idle
diff --git a/libcpu/aarch64/cortex-a57/interrupt.c b/libcpu/aarch64/cortex-a57/interrupt.c
new file mode 100644
index 0000000000..d770259d61
--- /dev/null
+++ b/libcpu/aarch64/cortex-a57/interrupt.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2006-2020, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2020-04-16 bigmagic first version
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include <gic_pl400.h>
+#include <board.h>
+#include <armv8.h>
+
+#define MAX_HANDLERS 256
+
+#ifdef RT_USING_SMP
+#define rt_interrupt_nest rt_cpu_self()->irq_nest
+#else
+extern volatile rt_uint8_t rt_interrupt_nest;
+#endif
+
+extern int system_vectors;
+
+/* exception and interrupt handler table */
+struct rt_irq_desc isr_table[MAX_HANDLERS];
+
+rt_ubase_t rt_interrupt_from_thread;
+rt_ubase_t rt_interrupt_to_thread;
+rt_ubase_t rt_thread_switch_interrupt_flag;
+
+void rt_hw_vector_init(void)
+{
+ rt_hw_set_current_vbar((rt_ubase_t)&system_vectors); // cpu_gcc.S
+}
+
+/**
+ * This function will initialize hardware interrupt
+ */
+void rt_hw_interrupt_init(void)
+{
+ initIRQController();
+}
+
+/**
+ * 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;
+} \ No newline at end of file
diff --git a/libcpu/aarch64/cortex-a57/interrupt.h b/libcpu/aarch64/cortex-a57/interrupt.h
new file mode 100644
index 0000000000..0d2d4867c7
--- /dev/null
+++ b/libcpu/aarch64/cortex-a57/interrupt.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2006-2020, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2020-04-16 bigmagic first version
+ */
+
+#ifndef __INTERRUPT_H__
+#define __INTERRUPT_H__
+
+#include <rthw.h>
+#include <board.h>
+
+#define INT_IRQ 0x00
+#define INT_FIQ 0x01
+
+void rt_hw_interrupt_init(void);
+void rt_hw_interrupt_mask(int vector);
+void rt_hw_interrupt_umask(int vector);
+
+rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
+ void *param, const char *name);
+
+#endif
diff --git a/libcpu/aarch64/cortex-a57/stack.c b/libcpu/aarch64/cortex-a57/stack.c
new file mode 100644
index 0000000000..68222c2c67
--- /dev/null
+++ b/libcpu/aarch64/cortex-a57/stack.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2006-2019, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date Author Notes
+ * 2011-09-23 Bernard the first version
+ * 2011-10-05 Bernard add thumb mode
+ */
+#include <rtthread.h>
+#include <board.h>
+
+#include <armv8.h>
+
+#define INITIAL_SPSR_EL3 (PSTATE_EL3 | SP_EL0)
+#define INITIAL_SPSR_EL2 (PSTATE_EL2 | SP_EL0)
+#define INITIAL_SPSR_EL1 (PSTATE_EL1 | SP_EL0)
+
+/**
+ * This function will initialize thread stack
+ *
+ * @param tentry the entry of thread
+ * @param parameter the parameter of entry
+ * @param stack_addr the beginning stack address
+ * @param texit the function will be called when thread exit
+ *
+ * @return stack address
+ */
+rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
+ rt_uint8_t *stack_addr, void *texit)
+{
+ rt_ubase_t *stk;
+ rt_ubase_t current_el;
+
+ stk = (rt_ubase_t*)stack_addr;
+
+ *(--stk) = ( rt_ubase_t ) 11; /* X1 */
+ *(--stk) = ( rt_ubase_t ) parameter; /* X0 */
+ *(--stk) = ( rt_ubase_t ) 33; /* X3 */
+ *(--stk) = ( rt_ubase_t ) 22; /* X2 */
+ *(--stk) = ( rt_ubase_t ) 55; /* X5 */
+ *(--stk) = ( rt_ubase_t ) 44; /* X4 */
+ *(--stk) = ( rt_ubase_t ) 77; /* X7 */
+ *(--stk) = ( rt_ubase_t ) 66; /* X6 */
+ *(--stk) = ( rt_ubase_t ) 99; /* X9 */
+ *(--stk) = ( rt_ubase_t ) 88; /* X8 */
+ *(--stk) = ( rt_ubase_t ) 11; /* X11 */
+ *(--stk) = ( rt_ubase_t ) 10; /* X10 */
+ *(--stk) = ( rt_ubase_t ) 13; /* X13 */
+ *(--stk) = ( rt_ubase_t ) 12; /* X12 */
+ *(--stk) = ( rt_ubase_t ) 15; /* X15 */
+ *(--stk) = ( rt_ubase_t ) 14; /* X14 */
+ *(--stk) = ( rt_ubase_t ) 17; /* X17 */
+ *(--stk) = ( rt_ubase_t ) 16; /* X16 */
+ *(--stk) = ( rt_ubase_t ) 19; /* X19 */
+ *(--stk) = ( rt_ubase_t ) 18; /* X18 */
+ *(--stk) = ( rt_ubase_t ) 21; /* X21 */
+ *(--stk) = ( rt_ubase_t ) 20; /* X20 */
+ *(--stk) = ( rt_ubase_t ) 23; /* X23 */
+ *(--stk) = ( rt_ubase_t ) 22; /* X22 */
+ *(--stk) = ( rt_ubase_t ) 25; /* X25 */
+ *(--stk) = ( rt_ubase_t ) 24; /* X24 */
+ *(--stk) = ( rt_ubase_t ) 27; /* X27 */
+ *(--stk) = ( rt_ubase_t ) 26; /* X26 */
+ *(--stk) = ( rt_ubase_t ) 29; /* X29 */
+ *(--stk) = ( rt_ubase_t ) 28; /* X28 */
+ *(--stk) = ( rt_ubase_t ) 0; /* XZR - has no effect, used so there are an even number of registers. */
+ *(--stk) = ( rt_ubase_t ) texit; /* X30 - procedure call link register. */
+
+ current_el = rt_hw_get_current_el();
+
+ if(current_el == 3)
+ {
+ *(--stk) = INITIAL_SPSR_EL3;
+ }
+ else if(current_el == 2)
+ {
+ *(--stk) = INITIAL_SPSR_EL2;
+ }
+ else
+ {
+ *(--stk) = INITIAL_SPSR_EL1;
+ }
+
+ *(--stk) = ( rt_ubase_t ) tentry; /* Exception return address. */
+
+ /* return task's current stack address */
+ return (rt_uint8_t *)stk;
+}
diff --git a/libcpu/aarch64/cortex-a57/trap.c b/libcpu/aarch64/cortex-a57/trap.c
new file mode 100644
index 0000000000..d93aa18fd6
--- /dev/null
+++ b/libcpu/aarch64/cortex-a57/trap.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2006-2020, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Date Author Notes
+ * 2018-10-06 ZhaoXiaowei the first version
+ */
+
+#include <rtthread.h>
+#include <rthw.h>
+
+#include "interrupt.h"
+#include "armv8.h"
+
+extern struct rt_thread *rt_current_thread;
+#ifdef RT_USING_FINSH
+extern long list_thread(void);
+#endif
+
+/**
+ * this function will show registers of CPU
+ *
+ * @param regs the registers point
+ */
+void rt_hw_show_register(struct rt_hw_exp_stack *regs)
+{
+ rt_kprintf("Execption:\n");
+ rt_kprintf("r00:0x%16.16lx r01:0x%16.16lx r02:0x%16.16lx r03:0x%16.16lx\n", regs->x0, regs->x1, regs->x2, regs->x3);
+ rt_kprintf("r04:0x%16.16lx r05:0x%16.16lx r06:0x%16.16lx r07:0x%16.16lx\n", regs->x4, regs->x5, regs->x6, regs->x7);
+ rt_kprintf("r08:0x%16.16lx r09:0x%16.16lx r10:0x%16.16lx r11:0x%16.16lx\n", regs->x8, regs->x9, regs->x10, regs->x11);
+ rt_kprintf("r12:0x%16.16lx r13:0x%16.16lx r14:0x%16.16lx r15:0x%16.16lx\n", regs->x12, regs->x13, regs->x14, regs->x15);
+ rt_kprintf("r16:0x%16.16lx r17:0x%16.16lx r18:0x%16.16lx r19:0x%16.16lx\n", regs->x16, regs->x17, regs->x18, regs->x19);
+ rt_kprintf("r20:0x%16.16lx r21:0x%16.16lx r22:0x%16.16lx r23:0x%16.16lx\n", regs->x20, regs->x21, regs->x22, regs->x23);
+ rt_kprintf("r24:0x%16.16lx r25:0x%16.16lx r26:0x%16.16lx r27:0x%16.16lx\n", regs->x24, regs->x25, regs->x26, regs->x27);
+ rt_kprintf("r28:0x%16.16lx r29:0x%16.16lx r30:0x%16.16lx\n", regs->x28, regs->x29, regs->x30);
+ rt_kprintf("spsr:0x%16.16lx\n", regs->spsr);
+ rt_kprintf("return pc:0x%16.16lx\n", regs->pc);
+}
+
+/**
+ * When comes across an instruction which it cannot handle,
+ * it takes the undefined instruction trap.
+ *
+ * @param regs system registers
+ *
+ * @note never invoke this function in application
+ */
+void rt_hw_trap_error(struct rt_hw_exp_stack *regs)
+{
+ rt_kprintf("error exception:\n");
+ rt_hw_show_register(regs);
+#ifdef RT_USING_FINSH
+ list_thread();
+#endif
+ rt_hw_cpu_shutdown();
+}
+
+#define GIC_ACK_INTID_MASK 0x000003ff
+
+int rt_hw_interrupt_get_irq(void);
+void rt_hw_interrupt_ack(int fiq_irq);
+
+void rt_hw_trap_irq(void)
+{
+ void *param;
+ int ir;
+ rt_isr_handler_t isr_func;
+ extern struct rt_irq_desc isr_table[];
+
+ ir = rt_hw_interrupt_get_irq();
+ if (ir == 1023)
+ {
+ /* Spurious interrupt */
+ return;
+ }
+
+ /* get interrupt service routine */
+ isr_func = isr_table[ir].handler;
+#ifdef RT_USING_INTERRUPT_INFO
+ isr_table[ir].counter++;
+#endif
+ if (isr_func)
+ {
+ /* Interrupt for myself. */
+ param = isr_table[ir].param;
+ /* turn to interrupt service routine */
+ isr_func(ir, param);
+ }
+
+ /* end of interrupt */
+ rt_hw_interrupt_ack(ir);
+
+}
+
+void rt_hw_trap_fiq(void)
+{
+}
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-30 16:15:05 +0000