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Merged
xiaoxiang781216 merged 1 commit into from
Jun 14, 2026
Merged

arch/risc-v/rp23xx-rv: Add SMP support for dual Hazard3 #19026

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2 changes: 1 addition & 1 deletion Documentation/platforms/risc-v/rp23xx-rv/index.rst
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Expand Up @@ -13,7 +13,7 @@ This is RISC-V version of the chip configuration.

This port is experimental and still a work in progress. Use with caution.

SMP (dual core configuration not supported yet)
SMP is supported, two cores available.

Peripheral Support
==================
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4 changes: 3 additions & 1 deletion arch/risc-v/Kconfig
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Expand Up @@ -448,13 +448,15 @@ config ARCH_CHIP_RP23XX_RV
select ARCH_RV_ISA_C
select ARCH_HAVE_RESET
select ARCH_HAVE_MULTICPU
select ARCH_HAVE_MISALIGN_EXCEPTION
select ARCH_HAVE_I2CRESET
select ARCH_HAVE_TICKLESS
select ARCH_HAVE_DEBUG
select RISCV_STRING_FUNCTION
select ONESHOT
select ONESHOT_COUNT
select ONESHOT_FAST_DIVISION
select ALARM_ARCH
select ARCH_HAVE_I2CRESET
select ARCH_BOARD_COMMON
---help---
Raspberry Pi RP23XX architectures (RISC-V dual Hazard3).
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6 changes: 6 additions & 0 deletions arch/risc-v/src/common/riscv_cpuinfo.c
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Expand Up @@ -46,6 +46,12 @@ ssize_t up_show_cpuinfo(char *buf, size_t buf_size, off_t file_off)
{
procfs_sprintf(buf, buf_size, &file_off, "processor\t: %d\n", i);
procfs_sprintf(buf, buf_size, &file_off, "hart\t\t: %d\n", i);
procfs_sprintf(buf, buf_size, &file_off, "BogoMIPS\t: %u.%02u\n",
(CONFIG_BOARD_LOOPSPERMSEC / 1000),
(CONFIG_BOARD_LOOPSPERMSEC / 10) % 100);
procfs_sprintf(buf, buf_size, &file_off, "cpu MHz\t\t: %u.%03u\n",
CONFIG_ARCH_CPUINFO_FREQ_KHZ / 1000,
CONFIG_ARCH_CPUINFO_FREQ_KHZ % 1000);

/* ISA */

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3 changes: 2 additions & 1 deletion arch/risc-v/src/rp23xx-rv/CMakeLists.txt
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Expand Up @@ -41,7 +41,8 @@ list(
rp23xx_pll.c)

if(CONFIG_SMP)
list(APPEND SRCS rp23xx_cpustart.c rp23xx_smpcall.c rp23xx_cpuidlestack.c)
list(REMOVE_ITEM SRCS riscv_smpcall.c riscv_cpustart.c)
list(APPEND SRCS rp23xx_cpustart.c rp23xx_smpcall.c)
endif()

if(CONFIG_RP23XX_RV_DMAC)
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3 changes: 3 additions & 0 deletions arch/risc-v/src/rp23xx-rv/Kconfig
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Expand Up @@ -5,6 +5,9 @@

comment "RP23XX Configuration Options"

config ARCH_RV_ISA_VENDOR_EXTENSIONS
default "zba_zbb_zbs_zbkb_zcb_zcmp"

config RP23XX_RV_RP2350B
bool "Use RP2350B variant (QFN-80)"
default n
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2 changes: 1 addition & 1 deletion arch/risc-v/src/rp23xx-rv/Make.defs
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Expand Up @@ -42,9 +42,9 @@ CHIP_CSRCS += rp23xx_xosc.c
CHIP_CSRCS += rp23xx_pll.c

ifeq ($(CONFIG_SMP),y)
CMN_CSRCS := $(filter-out riscv_smpcall.c riscv_cpustart.c, $(CMN_CSRCS))
CHIP_CSRCS += rp23xx_cpustart.c
CHIP_CSRCS += rp23xx_smpcall.c
CHIP_CSRCS += rp23xx_cpuidlestack.c
endif

ifeq ($(CONFIG_RP23XX_RV_DMAC),y)
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12 changes: 12 additions & 0 deletions arch/risc-v/src/rp23xx-rv/chip.h
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Expand Up @@ -37,11 +37,23 @@

#include <arch/rp23xx-rv/chip.h>

#include "riscv_internal.h"

/****************************************************************************
* Macro Definitions
****************************************************************************/

#ifdef __ASSEMBLY__

#if defined(CONFIG_SMP) && CONFIG_ARCH_INTERRUPTSTACK > 15
.macro setintstack tmp0, tmp1
up_cpu_index \tmp0
li \tmp1, STACKFRAME_ALIGN_DOWN(CONFIG_ARCH_INTERRUPTSTACK)
mul \tmp1, \tmp0, \tmp1
la \tmp0, g_intstacktop
sub sp, \tmp0, \tmp1
.endm
#endif /* CONFIG_SMP && CONFIG_ARCH_INTERRUPTSTACK > 15 */

#endif /* __ASSEMBLY__ */
#endif /* __ARCH_RISCV_SRC_RP23XX_RV_CHIP_H */
4 changes: 3 additions & 1 deletion arch/risc-v/src/rp23xx-rv/hardware/rp23xx_hazard3.h
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Expand Up @@ -27,11 +27,13 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"
#include "rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define hazard3_block() __asm__ volatile ("slt x0, x0, x0" ::: "memory")
#define hazard3_unblock() __asm__ volatile ("slt x0, x0, x1" ::: "memory")

#define hazard3_irqarray_read(csr, index) (READ_AND_SET_CSR(csr, (index)) >> 16)
#define hazard3_irqarray_write(csr, index, data) (WRITE_CSR(csr, (index) | ((uint32_t)(data) << 16)))
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2 changes: 0 additions & 2 deletions arch/risc-v/src/rp23xx-rv/hardware/rp23xx_memorymap.h
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Expand Up @@ -26,8 +26,6 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
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2 changes: 1 addition & 1 deletion arch/risc-v/src/rp23xx-rv/hardware/rp23xx_psm.h
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Expand Up @@ -27,7 +27,7 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"
#include "rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
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2 changes: 1 addition & 1 deletion arch/risc-v/src/rp23xx-rv/hardware/rp23xx_resets.h
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Expand Up @@ -27,7 +27,7 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"
#include "rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
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2 changes: 1 addition & 1 deletion arch/risc-v/src/rp23xx-rv/hardware/rp23xx_sio.h
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Expand Up @@ -27,7 +27,7 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"
#include "rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
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2 changes: 1 addition & 1 deletion arch/risc-v/src/rp23xx-rv/hardware/rp23xx_usbctrl_dpsram.h
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Expand Up @@ -27,7 +27,7 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"
#include "rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
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2 changes: 1 addition & 1 deletion arch/risc-v/src/rp23xx-rv/hardware/rp23xx_usbctrl_regs.h
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Expand Up @@ -27,7 +27,7 @@
* Included Files
****************************************************************************/

#include "hardware/rp23xx_memorymap.h"
#include "rp23xx_memorymap.h"

/****************************************************************************
* Pre-processor Definitions
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93 changes: 0 additions & 93 deletions arch/risc-v/src/rp23xx-rv/rp23xx_cpuidlestack.c
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