a4b22fe999
K230 chip has two T-Head C908 RiscV cores, previously we run NuttX on either little or big cores. This patch runs NuttX on both cores with OpenAMP support via the RPTUN driver. New additions: - in arch/risc-v/src/k230 - k230_rptun.c K230 RPTUN driver - k230_rptun.h K230 RPTUN driver header file - in baords/risc-v/k230/canmv230 - configs/master Build config for master node - configs/remote Build config for remote node - scripts/ld-rptun.script Build script for RPTUN Major changes: - arch/risc-v/Kconfig Select NUTTSBI_LATE_INIT upon NUTTSBI - in arch/risc-v/include - k230/irq.h Add UART3 IRQ defs - in arch/risc-v/src/k230 - Kconfig Add RPTUN related config items - Make.defs Add k230-rptun.c to sources - hardware/k230_memorymap.h Add K230 device and CSR defs - k230_hart.c Add hart ctrl for RPTUN - k230_hart.h Add hart ctrl for RPTUN - k230_mm_init.c Add Svpmbt to support RPTUN - k230_start.c Revised to support RPMsg UART - in boards/risc-v/k230/canmv230 - scripts/Make.defs Add RPTUN script selection - src/canmv_init.c Add RPTUN and RPMsg_UART initialization - in Documentation/platforms/risc-v/k230/boards/canmv230 - index.rst Add AMP usage information. Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
223 lines
6.6 KiB
C
223 lines
6.6 KiB
C
/****************************************************************************
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* arch/risc-v/src/k230/k230_hart.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/irq.h>
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#include "riscv_internal.h"
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#include "chip.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef CONFIG_K230_PBMT_THEAD
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#define THEAD_PBMT 0x638000
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#define XSTATUS THEAD_PBMT
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#else
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#define RISCV_PBMT 0x438000
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#define XSTATUS RISCV_PBMT
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#endif
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#define XSTATE_MSK ((1 << 30) - 1)
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#define MCOR 0x70013
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#define MHCR 0x11ff
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#define MHINT 0x6e30c
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#define MCCR2 0xe0000009
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#define MHINT_BIG 0x16e30c
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#define MCCR2_BIG 0xe0410009
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#define MSMPR 1
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#define MHCR_IE_MSK (1 << 0)
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#define MHCR_DE_MSK (1 << 1)
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#define RISCV_PMBT_EN (1 << 62)
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#define K230_DAT_SYNC_B ".long 0x0ff0000f\n"
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#define K230_INS_SYNC_B ".long 0x0000100f\n .long 0x0220000f\n"
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#define K230_I_IALL ".long 0x0100000b\n"
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#define K230_D_CIALL ".long 0x0030000b\n"
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#define K230_L2_IALL ".long 0x0170000b\n"
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#define K230_SYNC_IS ".long 0x01b0000b\n"
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#define ASM __asm__ __volatile__
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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#if !defined(CONFIG_BUILD_KERNEL) || defined(CONFIG_NUTTSBI)
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/****************************************************************************
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* Name: hart_cleanup
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* Description: from cleanup_before_linux() in K230 U-Boot
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****************************************************************************/
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static void k230_hart_cleanup(void)
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{
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uintptr_t reg = READ_CSR(CSR_MHCR);
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ASM(K230_DAT_SYNC_B);
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ASM(K230_INS_SYNC_B);
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ASM(K230_I_IALL); /* icache.iall */
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ASM(K230_D_CIALL); /* dcache.ciall */
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ASM(K230_DAT_SYNC_B);
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ASM(K230_INS_SYNC_B);
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reg &= ~MHCR_IE_MSK; /* icache.disable */
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reg &= ~MHCR_DE_MSK; /* dcache.disable */
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WRITE_CSR(CSR_MHCR, reg);
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ASM(K230_L2_IALL); /* l2.iall */
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ASM(K230_DAT_SYNC_B);
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ASM(K230_INS_SYNC_B);
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}
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#endif /* !defined(CONFIG_BUILD_KERNEL) || defined(CONFIG_NUTTSBI) */
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#if !defined(CONFIG_BUILD_KERNEL) || defined(CONFIG_NUTTSBI)
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/****************************************************************************
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* Name: k230_hart_on_big()
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* Description: returns true if running on big core
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****************************************************************************/
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int k230_hart_is_big(void)
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{
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#define MISA_VECTOR_BIT ('V'-'A')
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#define MISA_VECOTR_MASK ( 1 << MISA_VECTOR_BIT )
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return (READ_CSR(CSR_MISA) & MISA_VECOTR_MASK);
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}
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/****************************************************************************
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* Name: k230_hart_init()
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* Description: K230 M-mode HART setup following K230 SDK
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****************************************************************************/
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void k230_hart_init(void)
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{
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bool big = k230_hart_is_big();
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k230_hart_cleanup();
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WRITE_CSR(CSR_MXSTATUS, XSTATUS);
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WRITE_CSR(CSR_MHCR, MHCR);
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WRITE_CSR(CSR_MCOR, MCOR);
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WRITE_CSR(CSR_MSMPR, MSMPR);
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WRITE_CSR(CSR_MCCR2, big ? MCCR2_BIG : MCCR2);
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WRITE_CSR(CSR_MHINT, big ? MHINT_BIG : MHINT);
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#ifdef RISCV_PBMT
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SET_CSR(CSR_MENVCFG, MENVCFG_PBMT);
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#endif
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}
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/* Hart reset control bits */
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#define CORE_DONE_BIT (1 << 12)
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#define CORE_REST_BIT (1 << 0)
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#define CORE_DONE_ENW (1 << (12 + 16))
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#define CORE_REST_ENW (1 << (0 + 16))
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#define RESET_DELAY_US 200
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/****************************************************************************
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* Name: k230_hart_big_stop()
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* Description: stop big core
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****************************************************************************/
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void k230_hart_big_stop(void)
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{
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volatile uint32_t *rctl = (uint32_t *)K230_CPU1_RESET;
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/* 0x10001000 clear DONE */
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*rctl = CORE_DONE_BIT | CORE_DONE_ENW;
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up_udelay(RESET_DELAY_US);
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/* 0x10001 set RESET */
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*rctl = CORE_REST_BIT | CORE_REST_ENW;
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up_udelay(RESET_DELAY_US);
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}
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/****************************************************************************
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* Name: k230_hart_big_boot()
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* Description: start big core from given address
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****************************************************************************/
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void k230_hart_big_boot(uintptr_t addr)
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{
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volatile uint32_t *bctl = (uint32_t *)K230_CPU1_BOOTA;
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volatile uint32_t *rctl = (uint32_t *)K230_CPU1_RESET;
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if (k230_hart_is_big()) return;
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/* learned from U-Boot baremetal and RTT sysctl_reset_cpu */
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if (addr) *bctl = (uint32_t)addr;
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/* 0x10001000 clear DONE */
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*rctl = CORE_DONE_BIT | CORE_DONE_ENW;
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up_udelay(RESET_DELAY_US);
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/* 0x10001 set RESET */
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*rctl = CORE_REST_BIT | CORE_REST_ENW;
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up_udelay(RESET_DELAY_US);
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/* 0x10000 clear RESET */
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*rctl = CORE_REST_ENW;
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up_udelay(RESET_DELAY_US);
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}
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#endif /* !defined(CONFIG_BUILD_KERNEL) || defined(CONFIG_NUTTSBI) */
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#ifdef CONFIG_NUTTSBI_LATE_INIT
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/****************************************************************************
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* Name: sbi_late_initialize
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* Description: K230 specific setup in M-mode.
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****************************************************************************/
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void sbi_late_initialize(void)
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{
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/* delegate K230 plic enable to S-mode */
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*((volatile uint32_t *)K230_PLIC_CTRL) = 1;
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k230_hart_init();
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}
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#endif
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