arm/rp2040: use custom vectors to make smp_call work with exception_common

Signed-off-by: buxiasen <buxiasen@xiaomi.com>
This commit is contained in:
buxiasen 2024-10-17 12:37:40 +08:00
parent 4a1afab88e
commit 9464afe7c3
3 changed files with 123 additions and 0 deletions

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@ -348,6 +348,7 @@ config ARCH_CHIP_RP2040
select ARM_HAVE_WFE_SEV select ARM_HAVE_WFE_SEV
select ARCH_HAVE_PWM_MULTICHAN select ARCH_HAVE_PWM_MULTICHAN
select ARCH_BOARD_COMMON select ARCH_BOARD_COMMON
select ARCH_HAVE_CUSTOM_VECTORS
---help--- ---help---
Raspberry Pi RP2040 architectures (ARM dual Cortex-M0+). Raspberry Pi RP2040 architectures (ARM dual Cortex-M0+).

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@ -33,6 +33,7 @@ CHIP_CSRCS += rp2040_pio.c
CHIP_CSRCS += rp2040_clock.c CHIP_CSRCS += rp2040_clock.c
CHIP_CSRCS += rp2040_xosc.c CHIP_CSRCS += rp2040_xosc.c
CHIP_CSRCS += rp2040_pll.c CHIP_CSRCS += rp2040_pll.c
CHIP_CSRCS += rp2040_vectors.c
ifeq ($(CONFIG_SMP),y) ifeq ($(CONFIG_SMP),y)
CHIP_CSRCS += rp2040_cpustart.c CHIP_CSRCS += rp2040_cpustart.c

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@ -0,0 +1,121 @@
/****************************************************************************
* arch/arm/src/rp2040/rp2040_vectors.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Cloned from the ARMv7-M version:
*
* Copyright (C) 2012 Michael Smith. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "arm_internal.h"
#include "ram_vectors.h"
#include "nvic.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define IDLE_STACK (_ebss + CONFIG_IDLETHREAD_STACKSIZE)
#ifndef ARMV6M_PERIPHERAL_INTERRUPTS
# error ARMV6M_PERIPHERAL_INTERRUPTS must be defined to the number of I/O interrupts to be supported
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/* Chip-specific entrypoint */
extern void __start(void);
static void start(void)
{
/* Zero lr to mark the end of backtrace */
asm volatile ("mov lr, %0\n\t"
"bx %1\n\t"
:
: "r"(0), "r"(__start));
}
/****************************************************************************
* Public Functions
****************************************************************************/
/* Common exception entrypoint */
extern void exception_common(void);
extern void exception_direct(void);
/****************************************************************************
* Public data
****************************************************************************/
/* The v6m vector table consists of an array of function pointers, with the
* first slot (vector zero) used to hold the initial stack pointer.
*
* As all exceptions (interrupts) are routed via exception_common, we just
* need to fill this array with pointers to it.
*
* Note that the [ ... ] designated initializer is a GCC extension.
*/
const void * const _vectors[] locate_data(".vectors")
aligned_data(VECTAB_ALIGN) =
{
/* Initial stack */
IDLE_STACK,
/* Reset exception handler */
start,
/* Vectors 2 - n point directly at the generic handler */
[2 ... NVIC_IRQ_PENDSV] = &exception_common,
[(NVIC_IRQ_PENDSV + 1) ... (RP2040_SMP_CALL_PROC0 - 1)]
= &exception_direct,
[RP2040_SMP_CALL_PROC0 ... RP2040_SMP_CALL_PROC1]
= &exception_common,
[(RP2040_SMP_CALL_PROC1 + 1) ... (15 + ARMV6M_PERIPHERAL_INTERRUPTS)]
= &exception_direct,
};