[bsp/raspberry-pico] add: SMP (#6888)

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螺丝松掉的人 2023-02-02 12:19:33 +08:00 committed by GitHub
parent 4d6ceffcab
commit 6d00b28425
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 620 additions and 4 deletions

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@ -1,11 +1,12 @@
/* /*
* Copyright (c) 2006-2021, RT-Thread Development Team * Copyright (c) 2006-2023, RT-Thread Development Team
* *
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
* *
* Change Logs: * Change Logs:
* Date Author Notes * Date Author Notes
* 2021-01-28 flybreak first version * 2021-01-28 flybreak first version
* 2023-01-22 rose_man add RT_USING_SMP
*/ */
#include <rthw.h> #include <rthw.h>
@ -21,12 +22,16 @@
void isr_systick(void) void isr_systick(void)
{ {
/* enter interrupt */ /* enter interrupt */
#ifndef RT_USING_SMP
rt_interrupt_enter(); rt_interrupt_enter();
#endif
rt_tick_increase(); rt_tick_increase();
/* leave interrupt */ /* leave interrupt */
#ifndef RT_USING_SMP
rt_interrupt_leave(); rt_interrupt_leave();
#endif
} }
uint32_t systick_config(uint32_t ticks) uint32_t systick_config(uint32_t ticks)
@ -47,7 +52,14 @@ void rt_hw_board_init()
{ {
set_sys_clock_khz(PLL_SYS_KHZ, true); set_sys_clock_khz(PLL_SYS_KHZ, true);
#ifdef RT_USING_HEAP
rt_system_heap_init(HEAP_BEGIN, HEAP_END); rt_system_heap_init(HEAP_BEGIN, HEAP_END);
#endif
#ifdef RT_USING_SMP
extern rt_hw_spinlock_t _cpus_lock;
rt_hw_spin_lock_init(&_cpus_lock);
#endif
alarm_pool_init_default(); alarm_pool_init_default();
@ -64,10 +76,16 @@ void rt_hw_board_init()
} }
/* Configure the SysTick */ /* Configure the SysTick */
systick_config(frequency_count_khz(CLOCKS_FC0_SRC_VALUE_PLL_SYS_CLKSRC_PRIMARY) * 1000 / RT_TICK_PER_SECOND); systick_config(frequency_count_khz(CLOCKS_FC0_SRC_VALUE_ROSC_CLKSRC)*10000/RT_TICK_PER_SECOND);
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#ifdef RT_USING_SERIAL
stdio_init_all(); stdio_init_all();
rt_hw_uart_init(); rt_hw_uart_init();
#endif
#ifdef RT_USING_CONSOLE #ifdef RT_USING_CONSOLE
rt_console_set_device(RT_CONSOLE_DEVICE_NAME); rt_console_set_device(RT_CONSOLE_DEVICE_NAME);

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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2006-2021, RT-Thread Development Team * Copyright (c) 2006-2023, RT-Thread Development Team
* *
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
* *

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@ -0,0 +1,23 @@
# RT-Thread building script for component
from building import *
Import('rtconfig')
cwd = GetCurrentDir()
src = Glob('*.c') + Glob('*.cpp')
CPPPATH = [cwd]
if rtconfig.PLATFORM in ['armcc', 'armclang']:
src += Glob('*_rvds.S')
if rtconfig.PLATFORM in ['gcc']:
src += Glob('*_init.S')
src += Glob('*_gcc.S')
if rtconfig.PLATFORM in ['iccarm']:
src += Glob('*_iar.S')
group = DefineGroup('CPU', src, depend = [''], CPPPATH = CPPPATH)
Return('group')

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@ -0,0 +1,265 @@
/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2010-01-25 Bernard first version
* 2012-06-01 aozima set pendsv priority to 0xFF.
* 2012-08-17 aozima fixed bug: store r8 - r11.
* 2013-02-20 aozima port to gcc.
* 2013-06-18 aozima add restore MSP feature.
* 2013-11-04 bright fixed hardfault bug for gcc.
*/
.cpu cortex-m0
.fpu softvfp
.syntax unified
.thumb
.text
.equ SCB_VTOR, 0xE000ED08 /* Vector Table Offset Register */
.equ NVIC_INT_CTRL, 0xE000ED04 /* interrupt control state register */
.equ NVIC_SHPR3, 0xE000ED20 /* system priority register (3) */
.equ NVIC_PENDSV_PRI, 0xFFFF0000 /* PendSV and SysTick priority value (lowest) */
.equ NVIC_PENDSVSET, 0x10000000 /* value to trigger PendSV exception */
#include "../rtconfig.h"
#ifdef RT_USING_SMP
.equ SIO_CPUID, 0xd0000000 /* CPUID */
#define rt_hw_interrupt_disable rt_hw_local_irq_disable
#define rt_hw_interrupt_enable rt_hw_local_irq_enable
#endif
/*
* rt_base_t rt_hw_interrupt_disable();
*/
.global rt_hw_interrupt_disable
.type rt_hw_interrupt_disable, %function
rt_hw_interrupt_disable:
MRS R0, PRIMASK
CPSID I
BX LR
/*
* void rt_hw_interrupt_enable(rt_base_t level);
*/
.global rt_hw_interrupt_enable
.type rt_hw_interrupt_enable, %function
rt_hw_interrupt_enable:
MSR PRIMASK, R0
BX LR
/*
* void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
* R0 --> from
* R1 --> to
*/
.global rt_hw_context_switch_interrupt
.type rt_hw_context_switch_interrupt, %function
.global rt_hw_context_switch
.type rt_hw_context_switch, %function
rt_hw_context_switch_interrupt:
rt_hw_context_switch:
#ifndef RT_USING_SMP
/* set rt_thread_switch_interrupt_flag to 1 */
LDR R2, =rt_thread_switch_interrupt_flag
LDR R3, [R2]
CMP R3, #1
BEQ _reswitch
MOVS R3, #1
STR R3, [R2]
LDR R2, =rt_interrupt_from_thread /* set rt_interrupt_from_thread */
STR R0, [R2]
_reswitch:
LDR R2, =rt_interrupt_to_thread /* set rt_interrupt_to_thread */
STR R1, [R2]
#else
/* context_switch_to smp */
PUSH {LR}
BL __rt_cpu_switch
POP {R2}
#endif
LDR R0, =NVIC_INT_CTRL /* trigger the PendSV exception (causes context switch) */
LDR R1, =NVIC_PENDSVSET
STR R1, [R0]
#ifndef RT_USING_SMP
BX LR
#else
BX R2
#endif
/* R0 --> switch from thread stack
* R1 --> switch to thread stack
* psr, pc, LR, R12, R3, R2, R1, R0 are pushed into [from] stack
*/
.global PendSV_Handler
.type PendSV_Handler, %function
PendSV_Handler:
/* disable interrupt to protect context switch */
MRS R2, PRIMASK
CPSID I
#ifndef RT_USING_SMP
/* get rt_thread_switch_interrupt_flag */
LDR R0, =rt_thread_switch_interrupt_flag
#else
LDR R0, =SIO_CPUID
LDR R1, [R0]
LDR R3, =rt_thread_switch_array
CMP R1, #0
BEQ cpu0_info
ADDS R3, #12
cpu0_info:
MOV R0, R3
#endif
LDR R1, [R0]
CMP R1, #0x00
BEQ pendsv_exit /* pendsv already handled */
/* clear rt_thread_switch_interrupt_flag to 0 */
MOVS R1, #0
STR R1, [R0]
#ifndef RT_USING_SMP
LDR R0, =rt_interrupt_from_thread
#else
ADDS R0, #4
#endif
LDR R1, [R0]
CMP R1, #0x00
BEQ switch_to_thread /* skip register save at the first time */
MRS R1, PSP /* get from thread stack pointer */
SUBS R1, R1, #0x20 /* space for {R4 - R7} and {R8 - R11} */
LDR R0, [R0]
STR R1, [R0] /* update from thread stack pointer */
STMIA R1!, {R4 - R7} /* push thread {R4 - R7} register to thread stack */
MOV R4, R8 /* mov thread {R8 - R11} to {R4 - R7} */
MOV R5, R9
MOV R6, R10
MOV R7, R11
STMIA R1!, {R4 - R7} /* push thread {R8 - R11} high register to thread stack */
switch_to_thread:
#ifndef RT_USING_SMP
LDR R1, =rt_interrupt_to_thread
#else
MOV R1, R3
ADDS R1, #8
#endif
LDR R1, [R1]
LDR R1, [R1] /* load thread stack pointer */
LDMIA R1!, {R4 - R7} /* pop thread {R4 - R7} register from thread stack */
PUSH {R4 - R7} /* push {R4 - R7} to MSP for copy {R8 - R11} */
LDMIA R1!, {R4 - R7} /* pop thread {R8 - R11} high register from thread stack to {R4 - R7} */
MOV R8, R4 /* mov {R4 - R7} to {R8 - R11} */
MOV R9, R5
MOV R10, R6
MOV R11, R7
POP {R4 - R7} /* pop {R4 - R7} from MSP */
MSR PSP, R1 /* update stack pointer */
pendsv_exit:
/* restore interrupt */
MSR PRIMASK, R2
MOVS R0, #0x03
RSBS R0, R0, #0x00
BX R0
/*
* void rt_hw_context_switch_to(rt_uint32 to);
* R0 --> to
*/
.global rt_hw_context_switch_to
.type rt_hw_context_switch_to, %function
rt_hw_context_switch_to:
#ifndef RT_USING_SMP
LDR R1, =rt_interrupt_to_thread
STR R0, [R1]
/* set from thread to 0 */
LDR R1, =rt_interrupt_from_thread
MOVS R0, #0
STR R0, [R1]
/* set interrupt flag to 1 */
LDR R1, =rt_thread_switch_interrupt_flag
MOVS R0, #1
STR R0, [R1]
#else
/* context_switch_to smp */
MOV R2,R1
MOV R1,R0
MOVS R0,#0
BL __rt_cpu_switch
#endif
/* set the PendSV and SysTick exception priority */
LDR R0, =NVIC_SHPR3
LDR R1, =NVIC_PENDSV_PRI
LDR R2, [R0,#0x00] /* read */
ORRS R1, R1, R2 /* modify */
STR R1, [R0] /* write-back */
LDR R0, =NVIC_INT_CTRL /* trigger the PendSV exception (causes context switch) */
LDR R1, =NVIC_PENDSVSET
STR R1, [R0]
NOP
/* restore MSP */
LDR R0, =SCB_VTOR
LDR R0, [R0]
LDR R0, [R0]
NOP
MSR MSP, R0
/* enable interrupts at processor level */
CPSIE I
/* ensure PendSV exception taken place before subsequent operation */
DSB
ISB
/* never reach here! */
/* compatible with old version */
.global rt_hw_interrupt_thread_switch
.type rt_hw_interrupt_thread_switch, %function
rt_hw_interrupt_thread_switch:
BX LR
NOP
.global HardFault_Handler
.type HardFault_Handler, %function
HardFault_Handler:
/* get current context */
MRS R0, PSP /* get fault thread stack pointer */
PUSH {LR}
BL rt_hw_hard_fault_exception
POP {PC}
/*
* rt_uint32_t rt_hw_interrupt_check(void);
* R0 --> state
*/
.global rt_hw_interrupt_check
.type rt_hw_interrupt_check, %function
rt_hw_interrupt_check:
MRS R0, IPSR
BX LR

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@ -0,0 +1,284 @@
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2010-01-25 Bernard first version
* 2012-05-31 aozima Merge all of the C source code into cpuport.c
* 2012-08-17 aozima fixed bug: store r8 - r11.
* 2012-12-23 aozima stack addr align to 8byte.
* 2023-01-22 rose_man add RT_USING_SMP
*/
#include <rtthread.h>
#include <rthw.h>
#include <rtthread.h>
#include <stdint.h>
#include "board.h"
#ifdef RT_USING_SMP
#include "hardware/structs/sio.h"
#include "hardware/irq.h"
#include "pico/sync.h"
#include "pico/multicore.h"
int rt_hw_cpu_id(void)
{
return sio_hw->cpuid;
}
void rt_hw_spin_lock_init(rt_hw_spinlock_t *lock)
{
static uint8_t spin_cnt = 0;
if ( spin_cnt < 32)
{
lock->slock = (rt_uint32_t)spin_lock_instance(spin_cnt);
spin_cnt = spin_cnt + 1;
}
else
{
lock->slock = 0;
}
}
void rt_hw_spin_lock(rt_hw_spinlock_t *lock)
{
if ( lock->slock != 0 )
{
spin_lock_unsafe_blocking((spin_lock_t*)lock->slock);
}
}
void rt_hw_spin_unlock(rt_hw_spinlock_t *lock)
{
if ( lock->slock != 0 )
{
spin_unlock_unsafe((spin_lock_t*)lock->slock);
}
}
void secondary_cpu_c_start(void)
{
irq_set_enabled(SIO_IRQ_PROC1,RT_TRUE);
extern uint32_t systick_config(uint32_t ticks);
systick_config(frequency_count_khz(CLOCKS_FC0_SRC_VALUE_ROSC_CLKSRC)*10000/RT_TICK_PER_SECOND);
rt_hw_spin_lock(&_cpus_lock);
rt_system_scheduler_start();
}
void rt_hw_secondary_cpu_up(void)
{
multicore_launch_core1(secondary_cpu_c_start);
irq_set_enabled(SIO_IRQ_PROC0,RT_TRUE);
}
void rt_hw_secondary_cpu_idle_exec(void)
{
asm volatile ("wfi");
}
#define IPI_MAGIC 0x5a5a
void rt_hw_ipi_send(int ipi_vector, unsigned int cpu_mask)
{
sio_hw->fifo_wr = IPI_MAGIC;
}
void rt_hw_ipi_handler(void)
{
uint32_t status = sio_hw->fifo_st;
if ( status & (SIO_FIFO_ST_ROE_BITS | SIO_FIFO_ST_WOF_BITS) )
{
sio_hw->fifo_st = 0;
}
if ( status & SIO_FIFO_ST_VLD_BITS )
{
if ( sio_hw->fifo_rd == IPI_MAGIC )
{
//rt_schedule();
}
}
}
void isr_irq15(void)
{
rt_hw_ipi_handler();
}
void isr_irq16(void)
{
rt_hw_ipi_handler();
}
struct __rt_thread_switch_array
{
rt_ubase_t flag;
rt_ubase_t from;
rt_ubase_t to;
};
struct __rt_thread_switch_array rt_thread_switch_array[2] = { {0,0,0}, {0,0,0} };
void __rt_cpu_switch(rt_ubase_t from, rt_ubase_t to, struct rt_thread *thread)
{
struct rt_cpu* pcpu = rt_cpu_self();
rt_uint32_t cpuid = rt_hw_cpu_id();
if ( rt_thread_switch_array[cpuid].flag != 1)
{
rt_thread_switch_array[cpuid].flag = 1;
rt_thread_switch_array[cpuid].from = from;
}
rt_thread_switch_array[cpuid].to = to;
if ( pcpu->current_thread != RT_NULL )
{
thread->cpus_lock_nest = pcpu->current_thread->cpus_lock_nest;
thread->critical_lock_nest = pcpu->current_thread->critical_lock_nest;
thread->scheduler_lock_nest = pcpu->current_thread->scheduler_lock_nest;
}
pcpu->current_thread = thread;
if (!thread->cpus_lock_nest)
{
rt_hw_spin_unlock(&_cpus_lock);
}
}
#endif /*RT_USING_SMP*/
struct exception_stack_frame
{
rt_uint32_t r0;
rt_uint32_t r1;
rt_uint32_t r2;
rt_uint32_t r3;
rt_uint32_t r12;
rt_uint32_t lr;
rt_uint32_t pc;
rt_uint32_t psr;
};
struct stack_frame
{
/* r4 ~ r7 low register */
rt_uint32_t r4;
rt_uint32_t r5;
rt_uint32_t r6;
rt_uint32_t r7;
/* r8 ~ r11 high register */
rt_uint32_t r8;
rt_uint32_t r9;
rt_uint32_t r10;
rt_uint32_t r11;
struct exception_stack_frame exception_stack_frame;
};
/* flag in interrupt handling */
rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
rt_uint32_t rt_thread_switch_interrupt_flag;
/**
* 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)
{
struct stack_frame *stack_frame;
rt_uint8_t *stk;
unsigned long i;
stk = stack_addr + sizeof(rt_uint32_t);
stk = (rt_uint8_t *)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
stk -= sizeof(struct stack_frame);
stack_frame = (struct stack_frame *)stk;
/* init all register */
for (i = 0; i < sizeof(struct stack_frame) / sizeof(rt_uint32_t); i ++)
{
((rt_uint32_t *)stack_frame)[i] = 0xdeadbeef;
}
stack_frame->exception_stack_frame.r0 = (unsigned long)parameter; /* r0 : argument */
stack_frame->exception_stack_frame.r1 = 0; /* r1 */
stack_frame->exception_stack_frame.r2 = 0; /* r2 */
stack_frame->exception_stack_frame.r3 = 0; /* r3 */
stack_frame->exception_stack_frame.r12 = 0; /* r12 */
stack_frame->exception_stack_frame.lr = (unsigned long)texit; /* lr */
stack_frame->exception_stack_frame.pc = (unsigned long)tentry; /* entry point, pc */
stack_frame->exception_stack_frame.psr = 0x01000000L; /* PSR */
/* return task's current stack address */
return stk;
}
#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
extern long list_thread(void);
#endif
extern rt_thread_t rt_current_thread;
/**
* fault exception handling
*/
void rt_hw_hard_fault_exception(struct exception_stack_frame *contex)
{
rt_kprintf("psr: 0x%08x\n", contex->psr);
rt_kprintf(" pc: 0x%08x\n", contex->pc);
rt_kprintf(" lr: 0x%08x\n", contex->lr);
rt_kprintf("r12: 0x%08x\n", contex->r12);
rt_kprintf("r03: 0x%08x\n", contex->r3);
rt_kprintf("r02: 0x%08x\n", contex->r2);
rt_kprintf("r01: 0x%08x\n", contex->r1);
rt_kprintf("r00: 0x%08x\n", contex->r0);
#ifdef RT_USING_SMP
rt_thread_t rt_current_thread = rt_thread_self();
rt_kprintf("hard fault on cpu : %d on thread: %s\n", rt_current_thread->oncpu, rt_current_thread->name);
#else
rt_kprintf("hard fault on thread: %s\n", rt_current_thread->name);
#endif
#if defined(RT_USING_FINSH) && defined(MSH_USING_BUILT_IN_COMMANDS)
list_thread();
#endif
while (1);
}
#define SCB_CFSR (*(volatile const unsigned *)0xE000ED28) /* Configurable Fault Status Register */
#define SCB_HFSR (*(volatile const unsigned *)0xE000ED2C) /* HardFault Status Register */
#define SCB_MMAR (*(volatile const unsigned *)0xE000ED34) /* MemManage Fault Address register */
#define SCB_BFAR (*(volatile const unsigned *)0xE000ED38) /* Bus Fault Address Register */
#define SCB_AIRCR (*(volatile unsigned long *)0xE000ED0C) /* Reset control Address Register */
#define SCB_RESET_VALUE 0x05FA0004 /* Reset value, write to SCB_AIRCR can reset cpu */
#define SCB_CFSR_MFSR (*(volatile const unsigned char*)0xE000ED28) /* Memory-management Fault Status Register */
#define SCB_CFSR_BFSR (*(volatile const unsigned char*)0xE000ED29) /* Bus Fault Status Register */
#define SCB_CFSR_UFSR (*(volatile const unsigned short*)0xE000ED2A) /* Usage Fault Status Register */
/**
* reset CPU
*/
rt_weak void rt_hw_cpu_reset(void)
{
SCB_AIRCR = SCB_RESET_VALUE;//((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |SCB_AIRCR_SYSRESETREQ_Msk);
}

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@ -0,0 +1,22 @@
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-01-22 rose_man add RT_USING_SMP
*/
#ifndef CPUPORT_H__
#define CPUPORT_H__
typedef union {
unsigned long slock;
struct __arch_tickets {
unsigned short owner;
unsigned short next;
} tickets;
} rt_hw_spinlock_t;
#endif /*CPUPORT_H__*/

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@ -7,6 +7,8 @@ cwd = GetCurrentDir()
# The set of source files associated with this SConscript file. # The set of source files associated with this SConscript file.
src = Split(""" src = Split("""
pico-sdk/src/rp2_common/hardware_flash/flash.c
pico-sdk/src/rp2_common/pico_multicore/multicore.c
pico-sdk/src/rp2_common/pico_stdlib/stdlib.c pico-sdk/src/rp2_common/pico_stdlib/stdlib.c
pico-sdk/src/rp2_common/hardware_gpio/gpio.c pico-sdk/src/rp2_common/hardware_gpio/gpio.c
pico-sdk/src/rp2_common/hardware_claim/claim.c pico-sdk/src/rp2_common/hardware_claim/claim.c
@ -59,6 +61,8 @@ generated/bs2_default_padded_checksummed.S
""") """)
path = [ path = [
cwd + '/pico-sdk/src/rp2_common/hardware_flash/include',
cwd + '/pico-sdk/src/rp2_common/pico_multicore/include',
cwd + '/pico-sdk/src/common/pico_stdlib/include', cwd + '/pico-sdk/src/common/pico_stdlib/include',
cwd + '/pico-sdk/src/rp2_common/hardware_gpio/include', cwd + '/pico-sdk/src/rp2_common/hardware_gpio/include',
cwd + '/pico-sdk/src/common/pico_base/include', cwd + '/pico-sdk/src/common/pico_base/include',

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@ -3,7 +3,7 @@ import sys
# toolchains options # toolchains options
ARCH='arm' ARCH='arm'
CPU='cortex-m0' CPU='cortex-m0-dual'
CROSS_TOOL='gcc' CROSS_TOOL='gcc'
# bsp lib config # bsp lib config