surport qemu

This commit is contained in:
Huang_Yuqing 2021-04-29 19:52:30 +08:00
parent e4457ff475
commit 1c11b973d6
39 changed files with 4151 additions and 1 deletions

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@ -5,7 +5,7 @@ MAKEFLAGS += --no-print-directory
.PHONY:COMPILE_APP COMPILE_KERNEL
support :=kd233 stm32f407-st-discovery maix-go stm32f407zgt6 aiit-riscv64-board aiit-arm32-board hifive1-rev-B
support :=kd233 stm32f407-st-discovery maix-go stm32f407zgt6 aiit-riscv64-board aiit-arm32-board hifive1-rev-B hifive1-emulator
SRC_DIR:=
export BOARD ?=kd233

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#
# Automatically generated file; DO NOT EDIT.
# XiUOS Project Configuration
#
CONFIG_BOARD_FE310_EVB=y
CONFIG_KERNEL_CONSOLE_DEVICE_NAME="uart0"
#CONFIG_LED0=24
#CONFIG_LED1=25
CONFIG_ARCH_RISCV=y
CONFIG_ARCH_RISCV32=y
CONFIG_ARCH_CPU_32BIT=y
#
# hifive1 emulator feature
#
# CONFIG_BSP_USING_AUDIO is not set
# CONFIG_BSP_USING_CAMERA is not set
# CONFIG_BSP_USING_SDIO is not set
# CONFIG_BSP_USING_DMA is not set
CONFIG_BSP_USING_GPIO=y
# CONFIG_BSP_USING_I2C is not set
# CONFIG_BSP_USING_I2S is not set
# CONFIG_BSP_USING_LCD is not set
# CONFIG_BSP_USING_RTC is not set
# CONFIG_BSP_USING_SECURITY is not set
# CONFIG_BSP_USING_SPI is not set
CONFIG_BSP_USING_UART=y
# CONFIG_BSP_USING_UART_HS is not set
# CONFIG_BSP_USING_VIDEO is not set
# CONFIG_BSP_USING_WDT is not set
#
# General Purpose UARTs
#
CONFIG___STACKSIZE__=1024
#
# Hardware feature
#
CONFIG_RESOURCES_SERIAL=y
# CONFIG_SERIAL_USING_DMA=y
CONFIG_SERIAL_RB_BUFSZ=64
CONFIG_FS_VFS=n
# CONFIG_RESOURCES_HWTIMER is not set
# CONFIG_RESOURCES_I2C is not set
# CONFIG_RESOURCES_LCD is not set
# CONFIG_RESOURCES_SDIO is not set
# CONFIG_RESOURCES_TOUCH is not set
# CONFIG_RESOURCES_PIN=y
# CONFIG_RESOURCES_RTC is not set
# CONFIG_RESOURCES_SPI is not set
#CONFIG_RESOURCES_SPI_SD is not set
#CONFIG_RESOURCES_SPI_SFUD is not set
# SFUD_USING_SFDP is not set
# SFUD_USING_FLASH_INFO_TABLE is not set
# SFUD_DEBUG_LOG is not set
# CONFIG_RESOURCES_WDT is not set
# CONFIG_RESOURCES_USB is not set
# CONFIG_RESOURCES_USB_HOST is not set
# CONFIG_UDISK_MOUNTPOINT is not set
# CONFIG_USBH_MSTORAGE is not set
# CONFIG_RESOURCES_USB_DEVICE is not set
# CONFIG_USBD_THREAD_STACK_SZ is not set
#
# Kernel feature
#
#
# Kernel Device Object
#
CONFIG_KERNEL_DEVICE=y
CONFIG_KERNEL_CONSOLE=y
CONFIG_KERNEL_CONSOLEBUF_SIZE=128
#
# Task feature
#
CONFIG_SCHED_POLICY_RR_REMAINSLICE=y
# CONFIG_SCHED_POLICY_RR is not set
# CONFIG_SCHED_POLICY_FIFO is not set
#
# Memory Management
#
# CONFIG_KERNEL_MEMBLOCK is not set
CONFIG_MEM_ALIGN_SIZE=4
CONFIG_MM_PAGE_SIZE=1024
#
# Using small memory allocator
#
# CONFIG_KERNEL_SMALL_MEM_ALLOC is not set
#
# Inter-Task communication
#
# CONFIG_KERNEL_SEMAPHORE=y
# CONFIG_KERNEL_MUTEX=y
CONFIG_KERNEL_EVENT=n
CONFIG_KERNEL_MESSAGEQUEUE=n
CONFIG_KTASK_PRIORITY_8=y
CONFIG_KTASK_PRIORITY_MAX=8
CONFIG_TICK_PER_SECOND=100
# CONFIG_KERNEL_STACK_OVERFLOW_CHECK=y
CONFIG_KERNEL_BANNER=y
# CONFIG_KERNEL_HOOK is not set
# CONFIG_KERNEL_SOFTTIMER=y
# CONFIG_KERNEL_IDLE_HOOK=y
# CONFIG_IDEL_HOOK_LIST_SIZE=4
CONFIG_IDLE_KTASK_STACKSIZE=512
CONFIG_ZOMBIE_KTASK_STACKSIZE=512
# CONFIG_KERNEL_TASK_ISOLATION is not set
#
# Memory Management
#
# CONFIG_KERNEL_MEMBLOCK is not set
#
# Command shell
#
CONFIG_TOOL_SHELL=y
CONFIG_SHELL_TASK_PRIORITY=4
CONFIG_SHELL_TASK_STACK_SIZE=2048
#
# User Control
#
CONFIG_SHELL_DEFAULT_USER="letter"
CONFIG_SHELL_DEFAULT_USER_PASSWORD=""
CONFIG_SHELL_LOCK_TIMEOUT=10000
CONFIG_SHELL_ENTER_CR_AND_LF=y
# CONFIG_SHELL_ENTER_CRLF is not set
CONFIG_SHELL_ENTER_CR=y
CONFIG_SHELL_ENTER_LF=y
CONFIG_SHELL_MAX_NUMBER=5
CONFIG_SHELL_PARAMETER_MAX_NUMBER=8
CONFIG_SHELL_HISTORY_MAX_NUMBER=5
CONFIG_SHELL_PRINT_BUFFER=128
CONFIG_SHELL_USING_CMD_EXPORT=y
# CONFIG_SHELL_HELP_LIST_USER is not set
CONFIG_SHELL_HELP_SHOW_PERMISSION=y
# CONFIG_SHELL_HELP_LIST_VAR is not set
# CONFIG_SHELL_HELP_LIST_KEY is not set
#CONFIG_KERNEL_QUEUEMANAGE=y
# CONFIG_KERNEL_WORKQUEUE is not set
CONFIG_WORKQUEUE_KTASK_STACKSIZE=256
CONFIG_WORKQUEUE_KTASK_PRIORITY=2
CONFIG_QUEUE_MAX=2
CONFIG_KERNEL_WAITQUEUE=y
CONFIG_KERNEL_DATAQUEUE=y
# CONFIG_KERNEL_CIRCULAR_AREA is not set
# CONFIG_KERNEL_AVL_TREE is not set
CONFIG_NAME_MAX=32
CONFIG_ALIGN_SIZE=8
CONFIG_KERNEL_COMPONENTS_INIT=n
CONFIG_KERNEL_USER_MAIN=y
CONFIG_MAIN_KTASK_STACK_SIZE=1500
CONFIG_ENV_INIT_KTASK_STACK_SIZE=1024
CONFIG_MAIN_KTASK_PRIORITY=3
# CONFIG_USER_TEST is not set
# CONFIG_TOOL_TEST_SEM is not set
# CONFIG_TOOL_TEST_MUTEX is not set
# CONFIG_TOOL_TEST_EVENT is not set
# CONFIG_TOOL_TEST_MSG is not set
# CONFIG_TOOL_TEST_AVLTREE is not set
# CONFIG_TEST_CRICULAR_AREA is not set
# CONFIG_TOOL_TEST_MEM is not set
# CONFIG_TOOL_TEST_TIMER is not set
# CONFIG_TOOL_TEST_IWG is not set
# CONFIG_TOOL_TEST_REALTIME is not set
# CONFIG_TOOL_TEST_DBG is not set
# CONFIG_TOOL_TEST_SCHED is not set
# CONFIG_KERNEL_DEBUG is not set
#CONFIG_DEBUG_INIT_CONFIG=y
#CONFIG_DBG_INIT=1
#CONFIG_ARCH_SMP=y
#CONFIG_CPUS_NR=2
#
# hash table config
#
CONFIG_ID_HTABLE_SIZE=4
CONFIG_ID_NUM_MAX=16
#
# File system
#
CONFIG_FS_DFS=n
#CONFIG_DFS_USING_WORKDIR=y
#CONFIG_FS_DFS_DEVFS=y
#
# Fat filesystem
#
#
# IOT-Device File system
#
#
# Lwext4 filesystem
#
#
# APP Framework
#
#
# Perception
#
# CONFIG_PERCEPTION_SENSORDEVICE is not set
#
# connection
#
# CONFIG_CONNECTION_AT is not set
# CONFIG_CONNECTION_MQTT is not set
#
# medium communication
#
#
# Intelligence
#
#
# Control
#
#
# Lib
#
CONFIG_LIB=y
CONFIG_LIB_POSIX=y
CONFIG_LIB_NEWLIB=y
# CONFIG_LITTLEVGL2RTT_USING_DEMO=y
#
# Security
#

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mainmenu "XiUOS Project Configuration"
config BSP_DIR
string
option env="BSP_ROOT"
default "."
config KERNEL_DIR
string
option env="KERNEL_ROOT"
default "../.."
config BOARD_FE310_EVB
bool
select ARCH_RISCV
select ARCH_RISCV32
select ARCH_CPU_32BIT
default y
config KERNEL_CONSOLE_DEVICE_NAME
string
default "uart0"
source "$KERNEL_DIR/arch/Kconfig"
menu "hifive1-emulator feature"
source "$BSP_DIR/third_party_driver/Kconfig"
menu "config default board resources"
menu "config board app name"
config BOARD_APP_NAME
string "config board app name"
default "/XiUOS_hifive1-emulator_app.bin"
endmenu
menu "config board service table"
config SERVICE_TABLE_ADDRESS
hex "board service table address"
default 0x2007F0000
endmenu
endmenu
config __STACKSIZE__
int "stack size for interrupt"
default 4096
endmenu
menu "Hardware feature"
source "$KERNEL_DIR/resources/Kconfig"
endmenu
source "$KERNEL_DIR/Kconfig"

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SRC_FILES := board.c
SRC_DIR := third_party_driver
include $(KERNEL_ROOT)/compiler.mk

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# hifive1 emulator README
## 1. 简介
QEMU 是一个通用的开源模拟器和虚拟化工具。从5.0版本开始QEMU已经可以较完整的支持RISC-V架构同时支持SiFive的E系列核心。目前XiUOS同样支持运行在QEMU上。
| 硬件 | 描述 |
| -- | -- |
|芯片型号| Hifive1-FE310 |
|架构| RV32IMAC |
|主频| NA |
|片内SRAM| 16KB |
| 外设支持 | UART |
XiUOS板级当前支持使用UART。
## 2. 编译说明
编译环境Ubuntu18.04
编译工具链:[riscv-none-embed-gcc](https://github.com/ilg-archived/riscv-none-gcc/releases)
编译步骤:
>1.将编译工具链的路径添加到board/hifive1-emulator/config.mk文件当中例如将gnu-mcu-eclipse-riscv-none-gcc-8.2.0-2.1-20190425-1021-centos64.tgz解压到/opt/下时添加:
```
export CROSS_COMPILE ?=/opt/gnu-mcu-eclipse/riscv-none-gcc/8.2.0-2.1-20190425-1021/bin/riscv-none-embed-
```
>2.在代码根目录下执行以下命令,生成配置文件
```
make BOARD=hifive1-emulator menuconfig
```
>3.在menuconfig界面配置需要关闭和开启的功能按回车键进入下级菜单按Y键选中需要开启的功能按N键选中需要关闭的功能配置结束后选择Exit保存并退出
![hifive1-Rev-B](img/menuconfig.png)
>4.继续执行以下命令,进行编译
```
make BOARD=hifive1-emulator
```
>5.如果编译正确无误会在build目录下产生XiUOS_hifive1-emulator.elf、XiUOS_hifive1-emulator.bin文件。
>注:最后可以执行以下命令,清除配置文件和编译生成的文件
```
make BOARD=hifive1-emulator distclean
```
## 3. 运行
### 3.1 编译并安装QEMU
官网下载QEMU源码编译安装推荐使用[QEMU v5.2.0](https://download.qemu.org/qemu-5.2.0.tar.xz)版本如果官网下载速度慢也可从下面链接下载QEMU v5.2.0源码压缩包[下载地址](https://download.qemu.org/qemu-5.2.0.tar.xz)
```
wget https://download.qemu.org/qemu-5.2.0.tar.xz
tar -xvf qemu-5.2.0.tar.xz
cd qemu-5.2.0
./configure --target-list=riscv32-softmmu
make
sudo make install
```
### 3.2 运行结果
通过以下命令启动QEMU并加载XiUOS ELF文件
```
qemu-system-riscv32 -nographic -machine sifive_e -kernel build/XiUOS_hifive1-emulator.elf
```
QEMU运行起来后将会在终端上看到信息打印输出
![terminal](img/terminal.png)
### 3.3 调试
利用QEMU可以方便的对XiUOS进行调试首先通过以下命令启动QEMU
```
qemu-system-riscv32 -nographic -machine sifive_e -kernel build/XiUOS_hifive1-emulator.elf -s -S
```
然后在另一个终端执行riscv-none-embed-gdb命令
```
riscv-none-embed-gdb build/XiUOS_hifive1-emulator.elf -ex "target remote localhost:1234"
```

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/*
* Copyright (c) 2020 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file board.c
* @brief support hifive1-rev-B-board init configure and start-up
* @version 1.0
* @author AIIT XUOS Lab
* @date 2021-04-25
*/
#include <board.h>
#include <platform.h>
#include <encoding.h>
#include <arch_interrupt.h>
#include <xiuos.h>
#include <device.h>
#include <plic_driver.h>
extern void use_default_clocks(void);
extern void use_pll(int refsel, int bypass, int r, int f, int q);
plic_instance_t g_plic = {0} ;
void InitBoardHardware(void)
{
/* initialize the system clock */
use_default_clocks();
use_pll(0, 0, 1, 31, 1);
/* initialize hardware interrupt */
asm volatile(
"la t0, save_hw_context\n"
"csrw mtvec, t0"
);
PLIC_init(&g_plic,
PLIC_CTRL_ADDR,
PLIC_NUM_INTERRUPTS,
PLIC_NUM_PRIORITIES);
SET_CSR(mie, MIP_MEIP);
/* initialize timer*/
CLINT_MTIMECMP_ADDR = CLINT_MTIME_ADDR + TICK;
SET_CSR(mie, MIP_MTIP);
extern int InitHwUart(void);
InitHwUart();
InstallConsole(SERIAL_BUS_NAME, SERIAL_DRV_NAME, SERIAL_DEVICE_NAME);
KPrintf("\nconsole init completed.\n");
KPrintf("board initialization......\n");
KPrintf("memory address range: [0x%08x - 0x%08x], size: %d\n", (x_ubase) MEMORY_START_ADDRESS, (x_ubase) MEMORY_END_ADDRESS, MEMORY_SIZE);
/* initialize memory system */
InitBoardMemory(MEMORY_START_ADDRESS, MEMORY_END_ADDRESS);
return;
}

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/*
* Copyright (c) 2020 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file board.h
* @brief define hifive1-rev-B-board init configure and start-up function
* @version 1.0
* @author AIIT XUOS Lab
* @date 2021-04-25
*/
#ifndef __BOARD_H__
#define __BOARD_H__
#include <xsconfig.h>
#include <stdint.h>
#define TICK (RTC_FREQ / TICK_PER_SECOND)
#define CLINT_MTIME_ADDR (*((volatile uint64_t *)(CLINT_CTRL_ADDR + CLINT_MTIME)))
#define CLINT_MTIMECMP_ADDR (*((volatile uint64_t *)(CLINT_CTRL_ADDR + CLINT_MTIMECMP)))
#define SERIAL_BUS_NAME "uart0"
#define SERIAL_DRV_NAME "uart0_drv"
#define SERIAL_DEVICE_NAME "uart0_dev0"
#define SURPORT_PMP
#ifdef SEPARATE_COMPILE
#define MEMORY_SIZE 12
#else
#define MEMORY_SIZE 16
#endif
extern void *_end;
extern void *_heap_end;
extern void *__stack_end__;
extern unsigned int g_service_table_start;
extern unsigned int g_service_table_end;
#define MEMORY_START_ADDRESS (void *)&__stack_end__
#define MEMORY_END_ADDRESS (void *)( 0x80000000 + MEMORY_SIZE * 1024 )
#ifdef SEPARATE_COMPILE
typedef int (*main_t)(int argc, char *argv[]);
typedef void (*exit_t)(void);
struct UserSpaceS
{
main_t us_entrypoint;
exit_t us_taskquit;
uintptr_t us_textstart;
uintptr_t us_textend;
uintptr_t us_datasource;
uintptr_t us_datastart;
uintptr_t us_dataend;
uintptr_t us_bssstart;
uintptr_t us_bssend;
uintptr_t us_heapend;
};
#define USERSPACE (( struct UserSpaceS *)(0x20080000))
#ifndef SERVICE_TABLE_ADDRESS
#define SERVICE_TABLE_ADDRESS (0x2007F0000) //in flash
#endif
#define USER_SRAM_SIZE 4
#define USER_MEMORY_START_ADDRESS (USERSPACE->us_bssend)
#define USER_MEMORY_END_ADDRESS (0x80003000 + USER_SRAM_SIZE * 1024)
#endif
#endif

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export CFLAGS := -mcmodel=medany -march=rv32imac -mabi=ilp32 -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb -fgnu89-inline
export AFLAGS := -c -mcmodel=medany -march=rv32imac -mabi=ilp32 -x assembler-with-cpp -ggdb
export LFLAGS := -mcmodel=medany -march=rv32imac -mabi=ilp32 -nostartfiles -Wl,--gc-sections,-Map=XiUOS.map,-cref,-u,_start -T $(BSP_ROOT)/link.lds
export APPLFLAGS := -mcmodel=medany -march=rv32imac -mabi=ilp32 -nostartfiles -Wl,--gc-sections,-Map=XiUOS_app.map,-cref,-u, -T $(BSP_ROOT)/link_userspace.lds
export CXXFLAGS := -mcmodel=medany -march=rv32imac -mabi=ilp32 -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -O0 -ggdb
export CROSS_COMPILE ?=/opt/gnu-mcu-eclipse/riscv-none-gcc/8.2.0-2.1-20190425-1021/bin/riscv-none-embed-
export DEFINES := -DHAVE_CCONFIG_H -DHAVE_SIGINFO
export ARCH = risc-v
export MCU = FE310
# export HAVE_SIGINFO=1
# export USING_LORA = 1

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/*
* Copyright (c) 2020 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
OUTPUT_ARCH( "riscv" )
__STACKSIZE__ = 1024;
ENTRY( _begin )
MEMORY
{
flash (rxai!w) : ORIGIN = 0x20400000, LENGTH = 4096K
sram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 16K
}
SECTIONS
{
.start :
{
*(.init);
} > flash
.text :
{
*(.text .text.*)
*(.rodata .rodata*)
/* section information for shell */
. = ALIGN(8);
_shell_command_start = .;
KEEP (*(shellCommand))
_shell_command_end = .;
. = ALIGN(8);
/* the work i did */
PROVIDE(__ctors_start__ = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE(__ctors_end__ = .);
. = ALIGN(4);
__isrtbl_idx_start = .;
KEEP(*(.isrtbl.idx))
__isrtbl_start = .;
KEEP(*(.isrtbl))
__isrtbl_end = .;
. = ALIGN(8);
PROVIDE(g_service_table_start = ABSOLUTE(.));
KEEP(*(.g_service_table))
PROVIDE(g_service_table_end = ABSOLUTE(.));
} > flash
PROVIDE (_etext = .);
. = ALIGN(4);
.lalign :
{
. = ALIGN(4);
PROVIDE( _data_lma = . );
} >flash AT>flash
.data :
{
. = ALIGN(4);
PROVIDE( _data = . );
*(.data .data.*)
. = ALIGN(4);
PROVIDE( __global_pointer$ = . + 0x800 );
*(.sdata .sdata.*)
} >sram AT>flash
. = ALIGN(4);
PROVIDE( _edata = . );
PROVIDE( __bss_start = . );
.bss :
{
*(.sbss*)
*(.bss .bss.*)
*(.scommon)
. = ALIGN(4);
} > sram
. = ALIGN(8);
PROVIDE( _end = . );
.stack :
{
. = ALIGN(4);
/* cpu0 stack top site */
. = . + __STACKSIZE__;
_sp = . ;
PROVIDE(_sp = ABSOLUTE(.));
PROVIDE( __stack_end__ = ABSOLUTE(.) );
} > sram
}

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/*
* Copyright (c) 2020 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
OUTPUT_ARCH("riscv")
MEMORY
{
uflash (rx) : ORIGIN = 0x20080000, LENGTH = 512k /* 512KB uflash */
usram (rw) : ORIGIN = 0x80003000, LENGTH = 4k /* 4K usram */
}
SECTIONS
{
.userspace :
{
. = ALIGN(4);
KEEP(*(.userspace))
} > uflash
.text :
{
_ustext = ABSOLUTE(.);
*(.text .text.*)
*(.rodata .rodata*)
*(.glue_7)
*(.glue_7t)
PROVIDE(_uetext = ABSOLUTE(.));
} > uflash
.init_section : {
_sinit = ABSOLUTE(.);
KEEP(*(.init_array .init_array.*))
_einit = ABSOLUTE(.);
} > uflash
__uexidx_start = ABSOLUTE(.);
.ARM.exidx :
{
PROVIDE(__uexidx_start = ABSOLUTE(.));
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
PROVIDE(__uexidx_end = ABSOLUTE(.));
} > uflash
_ueronly = ABSOLUTE(.);
.data : AT(_ueronly)
{
_usdata = ABSOLUTE(.);
*(.data .data.*)
. = ALIGN(4);
_uedata = ABSOLUTE(.);
} > usram
.bss : {
. = ALIGN(4);
_usbss = ABSOLUTE(.);
*(.bss .bss.*)
*(.sbss .sbss.*)
. = ALIGN(4);
_uebss = ABSOLUTE(.);
} > usram
}

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This software, except as otherwise noted in subrepositories,
is licensed under the Apache 2 license, quoted below.
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
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@ -0,0 +1,3 @@
SRC_FILES := connect_usart.c plic/plic_driver.c fe300prci/fe300prci_driver.c init.c
include $(KERNEL_ROOT)/compiler.mk

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@ -0,0 +1,278 @@
/*
* Copyright (c) 2020 AIIT XUOS Lab
* XiUOS is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
/**
* @file connect_usart.c
* @brief support aiit-arm32-board usart function and register to bus framework
* @version 1.0
* @author AIIT XUOS Lab
* @date 2021-04-25
*/
#include <xiuos.h>
#include <device.h>
#include <encoding.h>
#include <platform.h>
#include <arch_interrupt.h>
#include <uart.h>
#include <board.h>
static void SerialCfgParamCheck(struct SerialCfgParam *serial_cfg_default, struct SerialCfgParam *serial_cfg_new)
{
struct SerialDataCfg *data_cfg_default = &serial_cfg_default->data_cfg;
struct SerialDataCfg *data_cfg_new = &serial_cfg_new->data_cfg;
if((data_cfg_default->serial_baud_rate != data_cfg_new->serial_baud_rate) && (data_cfg_new->serial_baud_rate))
{
data_cfg_default->serial_baud_rate = data_cfg_new->serial_baud_rate;
}
if((data_cfg_default->serial_bit_order != data_cfg_new->serial_bit_order) && (data_cfg_new->serial_bit_order))
{
data_cfg_default->serial_bit_order = data_cfg_new->serial_bit_order;
}
if((data_cfg_default->serial_buffer_size != data_cfg_new->serial_buffer_size) && (data_cfg_new->serial_buffer_size))
{
data_cfg_default->serial_buffer_size = data_cfg_new->serial_buffer_size;
}
if((data_cfg_default->serial_data_bits != data_cfg_new->serial_data_bits) && (data_cfg_new->serial_data_bits))
{
data_cfg_default->serial_data_bits = data_cfg_new->serial_data_bits;
}
if((data_cfg_default->serial_invert_mode != data_cfg_new->serial_invert_mode) && (data_cfg_new->serial_invert_mode))
{
data_cfg_default->serial_invert_mode = data_cfg_new->serial_invert_mode;
}
if((data_cfg_default->serial_parity_mode != data_cfg_new->serial_parity_mode) && (data_cfg_new->serial_parity_mode))
{
data_cfg_default->serial_parity_mode = data_cfg_new->serial_parity_mode;
}
if((data_cfg_default->serial_stop_bits != data_cfg_new->serial_stop_bits) && (data_cfg_new->serial_stop_bits))
{
data_cfg_default->serial_stop_bits = data_cfg_new->serial_stop_bits;
}
}
static void usart_handler(int vector, void *param)
{
struct SerialBus *serial_bus = (struct SerialBus *)param;
struct SerialHardwareDevice *serial_dev = (struct SerialHardwareDevice *)serial_bus->bus.owner_haldev;
SerialSetIsr(serial_dev, SERIAL_EVENT_RX_IND);
}
static uint32 SerialInit(struct SerialDriver *serial_drv, struct BusConfigureInfo *configure_info)
{
NULL_PARAM_CHECK(serial_drv);
struct SerialCfgParam *serial_cfg = (struct SerialCfgParam *)serial_drv->private_data;
if(configure_info->private_data)
{
struct SerialCfgParam *serial_cfg_new = (struct SerialCfgParam *)configure_info->private_data;
SerialCfgParamCheck(serial_cfg, serial_cfg_new);
}
GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK;
GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK;
UART0_REG(UART_REG_DIV) = get_cpu_freq() / serial_cfg->data_cfg.serial_baud_rate - 1;
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
UART0_REG(UART_REG_RXCTRL) |= UART_RXEN;
UART0_REG(UART_REG_IE) = UART_IP_RXWM;
return EOK;
}
static uint32 SerialConfigure(struct SerialDriver *serial_drv, int serial_operation_cmd)
{
NULL_PARAM_CHECK(serial_drv);
return EOK;
}
static uint32 SerialDrvConfigure(void *drv, struct BusConfigureInfo *configure_info)
{
NULL_PARAM_CHECK(drv);
NULL_PARAM_CHECK(configure_info);
x_err_t ret = EOK;
int serial_operation_cmd;
struct SerialDriver *serial_drv = (struct SerialDriver *)drv;
switch (configure_info->configure_cmd)
{
case OPE_INT:
ret = SerialInit(serial_drv, configure_info);
break;
case OPE_CFG:
serial_operation_cmd = *(int *)configure_info->private_data;
ret = SerialConfigure(serial_drv, serial_operation_cmd);
break;
default:
break;
}
return ret;
}
static int SerialPutChar(struct SerialHardwareDevice *serial_dev, char c)
{
while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
UART0_REG(UART_REG_TXFIFO) = c;
return 0;
}
static int SerialGetChar(struct SerialHardwareDevice *serial_dev)
{
int32_t val = UART0_REG(UART_REG_RXFIFO);
if (val > 0)
return (uint8_t)val;
else
return -1;
}
static const struct SerialDataCfg data_cfg_init =
{
.serial_baud_rate = BAUD_RATE_115200,
.serial_data_bits = DATA_BITS_8,
.serial_stop_bits = STOP_BITS_1,
.serial_parity_mode = PARITY_NONE,
.serial_bit_order = BIT_ORDER_LSB,
.serial_invert_mode = NRZ_NORMAL,
.serial_buffer_size = SERIAL_RB_BUFSZ,
};
/*manage the serial device operations*/
static const struct SerialDrvDone drv_done =
{
.init = SerialInit,
.configure = SerialConfigure,
};
/*manage the serial device hal operations*/
static struct SerialHwDevDone hwdev_done =
{
.put_char = SerialPutChar,
.get_char = SerialGetChar,
};
static int BoardSerialBusInit(struct SerialBus *serial_bus, struct SerialDriver *serial_driver, const char *bus_name, const char *drv_name)
{
x_err_t ret = EOK;
/*Init the serial bus */
ret = SerialBusInit(serial_bus, bus_name);
if(EOK != ret)
{
KPrintf("InitHwUart SerialBusInit error %d\n", ret);
return ERROR;
}
/*Init the serial driver*/
ret = SerialDriverInit(serial_driver, drv_name);
if(EOK != ret)
{
KPrintf("InitHwUart SerialDriverInit error %d\n", ret);
return ERROR;
}
/*Attach the serial driver to the serial bus*/
ret = SerialDriverAttachToBus(drv_name, bus_name);
if(EOK != ret)
{
KPrintf("InitHwUart SerialDriverAttachToBus error %d\n", ret);
return ERROR;
}
return ret;
}
/*Attach the serial device to the serial bus*/
static int BoardSerialDevBend(struct SerialHardwareDevice *serial_device, void *serial_param, const char *bus_name, const char *dev_name)
{
x_err_t ret = EOK;
ret = SerialDeviceRegister(serial_device, serial_param, dev_name);
if(EOK != ret)
{
KPrintf("InitHwUart SerialDeviceInit device %s error %d\n", dev_name, ret);
return ERROR;
}
ret = SerialDeviceAttachToBus(dev_name, bus_name);
if(EOK != ret)
{
KPrintf("InitHwUart SerialDeviceAttachToBus device %s error %d\n", dev_name, ret);
return ERROR;
}
return ret;
}
int InitHwUart(void)
{
x_err_t ret = EOK;
static struct SerialBus serial_bus;
memset(&serial_bus, 0, sizeof(struct SerialBus));
static struct SerialDriver serial_driver;
memset(&serial_driver, 0, sizeof(struct SerialDriver));
static struct SerialHardwareDevice serial_device;
memset(&serial_device, 0, sizeof(struct SerialHardwareDevice));
static struct SerialCfgParam serial_cfg;
memset(&serial_cfg, 0, sizeof(struct SerialCfgParam));
static struct SerialDevParam serial_dev_param;
memset(&serial_dev_param, 0, sizeof(struct SerialDevParam));
serial_driver.drv_done = &drv_done;
serial_driver.configure = &SerialDrvConfigure;
serial_device.hwdev_done = &hwdev_done;
serial_cfg.data_cfg = data_cfg_init;
serial_cfg.hw_cfg.serial_register_base = UART0_CTRL_ADDR;
serial_cfg.hw_cfg.serial_irq_interrupt = INT_UART0_BASE;
serial_driver.private_data = (void *)&serial_cfg;
serial_dev_param.serial_work_mode = SIGN_OPER_INT_RX;
serial_device.haldev.private_data = (void *)&serial_dev_param;
ret = BoardSerialBusInit(&serial_bus, &serial_driver, SERIAL_BUS_NAME, SERIAL_DRV_NAME);
if(EOK != ret)
{
KPrintf("InitHwUart uarths error ret %u\n", ret);
return ERROR;
}
ret = BoardSerialDevBend(&serial_device, (void *)&serial_cfg, SERIAL_BUS_NAME, SERIAL_DEVICE_NAME);
if(EOK != ret)
{
KPrintf("InitHwUart uarths error ret %u\n", ret);
return ERROR;
}
isrManager.done->registerIrq(serial_cfg.hw_cfg.serial_irq_interrupt, usart_handler, &serial_bus);
isrManager.done->enableIrq(serial_cfg.hw_cfg.serial_irq_interrupt);
return ret;
}

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@ -0,0 +1,102 @@
// See LICENSE for license details.
#ifndef _SIFIVE_COREPLEXIP_ARTY_H
#define _SIFIVE_COREPLEXIP_ARTY_H
#include <stdint.h>
/****************************************************************************
* GPIO Connections
*****************************************************************************/
// These are the GPIO bit offsets for the directly driven
// RGB LEDs on the Freedom Exx Coreplex IP Evaluation Arty FPGA Dev Kit.
// Additional RGB LEDs are driven by the 3 PWM outputs.
#define RED_LED_OFFSET 0
#define GREEN_LED_OFFSET 1
#define BLUE_LED_OFFSET 2
// Switch 3 is used as a GPIO input. (Switch 0 is used to set
// the reset vector, the other switches are unused).
#define SW_3_OFFSET 3
// These are the buttons which are mapped as inputs.
#define HAS_BOARD_BUTTONS
#define BUTTON_0_OFFSET 4
#define BUTTON_1_OFFSET 5
#define BUTTON_2_OFFSET 6
#define BUTTON_3_OFFSET 7
// These are the bit offsets for the different GPIO pins
// mapped onto the PMOD A header.
#define JA_0_OFFSET 8
#define JA_1_OFFSET 9
#define JA_2_OFFSET 10
#define JA_3_OFFSET 11
#define JA_4_OFFSET 12
#define JA_5_OFFSET 13
#define JA_6_OFFSET 14
#define JA_7_OFFSET 15
// The below gives a mapping between global interrupt
// sources and their number. Note that on the coreplex
// deliverable, the io_global_interrupts go directly into
// the PLIC. The evaluation image on the FPGA mimics a
// system with peripheral devices which are driving the
// global interrupt lines.
// So, on this image, in order to get an interrupt from
// e.g. pressing BUTTON_0:
// 1) Steps which are external to the delivery coreplex:
// a) The corresponding GPIO pin must be configured as in input
// b) The "interrupt on fall" bit must be set for the GPIO pin
// 2) Steps which would also need to be performed for the delivery coreplex:
// a) The corresponding global interrupt, priority, and threshold must be configured in the PLIC.
// b) The external interrupt bit must be enabled in MSTATUS
// c) Interrupts must be enabled globally in the core.
// Any of the above GPIO pins can be used as global interrupt
// sources by adding their offset to the INT_GPIO_BASE.
// For example, the buttons are shown here:
#define INT_DEVICE_BUTTON_0 (GPIO_INT_BASE + BUTTON_0_OFFSET)
#define INT_DEVICE_BUTTON_1 (GPIO_INT_BASE + BUTTON_1_OFFSET)
#define INT_DEVICE_BUTTON_2 (GPIO_INT_BASE + BUTTON_2_OFFSET)
#define INT_DEVICE_BUTTON_3 (GPIO_INT_BASE + BUTTON_3_OFFSET)
// In addition, the Switches are mapped directly to
// the PLIC (without going through the GPIO Peripheral).
#define INT_EXT_DEVICE_SW_0 (EXTERNAL_INT_BASE + 0)
#define INT_EXT_DEVICE_SW_1 (EXTERNAL_INT_BASE + 1)
#define INT_EXT_DEVICE_SW_2 (EXTERNAL_INT_BASE + 2)
#define INT_EXT_DEVICE_SW_3 (EXTERNAL_INT_BASE + 3)
// This gives the mapping from inputs to LOCAL interrupts.
#define LOCAL_INT_SW_0 0
#define LOCAL_INT_SW_1 1
#define LOCAL_INT_SW_2 2
#define LOCAL_INT_SW_3 3
#define LOCAL_INT_BTN_0 4
#define LOCAL_INT_BTN_1 5
#define LOCAL_INT_BTN_2 6
#define LOCAL_INT_BTN_3 7
#define LOCAL_INT_JA_0 8
#define LOCAL_INT_JA_1 9
#define LOCAL_INT_JA_2 10
#define LOCAL_INT_JA_3 11
#define LOCAL_INT_JA_4 12
#define LOCAL_INT_JA_5 13
#define LOCAL_INT_JA_6 14
#define LOCAL_INT_JA_7 15
#define RTC_FREQ 32768
void write_hex(int fd, unsigned long int hex);
#endif /* _SIFIVE_COREPLEXIP_ARTY_H */

File diff suppressed because it is too large Load Diff

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@ -0,0 +1,252 @@
// See LICENSE file for license details
#include "platform.h"
#ifdef PRCI_CTRL_ADDR
#include "fe300prci/fe300prci_driver.h"
#include <unistd.h>
#define rdmcycle(x) { \
uint32_t lo, hi, hi2; \
__asm__ __volatile__ ("1:\n\t" \
"csrr %0, mcycleh\n\t" \
"csrr %1, mcycle\n\t" \
"csrr %2, mcycleh\n\t" \
"bne %0, %2, 1b\n\t" \
: "=r" (hi), "=r" (lo), "=r" (hi2)) ; \
*(x) = lo | ((uint64_t) hi << 32); \
}
uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq)
{
uint32_t start_mtime = CLINT_REG(CLINT_MTIME);
uint32_t end_mtime = start_mtime + mtime_ticks + 1;
// Make sure we won't get rollover.
while (end_mtime < start_mtime){
start_mtime = CLINT_REG(CLINT_MTIME);
end_mtime = start_mtime + mtime_ticks + 1;
}
// Don't start measuring until mtime edge.
uint32_t tmp = start_mtime;
do {
start_mtime = CLINT_REG(CLINT_MTIME);
} while (start_mtime == tmp);
uint64_t start_mcycle;
rdmcycle(&start_mcycle);
while (CLINT_REG(CLINT_MTIME) < end_mtime) ;
uint64_t end_mcycle;
rdmcycle(&end_mcycle);
uint32_t difference = (uint32_t) (end_mcycle - start_mcycle);
uint64_t freq = ((uint64_t) difference * mtime_freq) / mtime_ticks;
return (uint32_t) freq & 0xFFFFFFFF;
}
void PRCI_use_hfrosc(int div, int trim)
{
// Make sure the HFROSC is running at its default setting
// It is OK to change this even if we are running off of it.
PRCI_REG(PRCI_HFROSCCFG) = (ROSC_DIV(div) | ROSC_TRIM(trim) | ROSC_EN(1));
while ((PRCI_REG(PRCI_HFROSCCFG) & ROSC_RDY(1)) == 0);
PRCI_REG(PRCI_PLLCFG) &= ~PLL_SEL(1);
}
void PRCI_use_pll(int refsel, int bypass,
int r, int f, int q, int finaldiv,
int hfroscdiv, int hfrosctrim)
{
// Ensure that we aren't running off the PLL before we mess with it.
if (PRCI_REG(PRCI_PLLCFG) & PLL_SEL(1)) {
// Make sure the HFROSC is running at its default setting
PRCI_use_hfrosc(4, 16);
}
// Set PLL Source to be HFXOSC if desired.
uint32_t config_value = 0;
config_value |= PLL_REFSEL(refsel);
if (bypass) {
// Bypass
config_value |= PLL_BYPASS(1);
PRCI_REG(PRCI_PLLCFG) = config_value;
// If we don't have an HFXTAL, this doesn't really matter.
// Set our Final output divide to divide-by-1:
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
} else {
// To overclock, use the hfrosc
if (hfrosctrim >= 0 && hfroscdiv >= 0) {
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
}
// Set DIV Settings for PLL
// (Legal values of f_REF are 6-48MHz)
// Set DIVR to divide-by-2 to get 8MHz frequency
// (legal values of f_R are 6-12 MHz)
config_value |= PLL_BYPASS(1);
config_value |= PLL_R(r);
// Set DIVF to get 512Mhz frequncy
// There is an implied multiply-by-2, 16Mhz.
// So need to write 32-1
// (legal values of f_F are 384-768 MHz)
config_value |= PLL_F(f);
// Set DIVQ to divide-by-2 to get 256 MHz frequency
// (legal values of f_Q are 50-400Mhz)
config_value |= PLL_Q(q);
// Set our Final output divide to divide-by-1:
if (finaldiv == 1){
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
} else {
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV(finaldiv-1));
}
PRCI_REG(PRCI_PLLCFG) = config_value;
// Un-Bypass the PLL.
PRCI_REG(PRCI_PLLCFG) &= ~PLL_BYPASS(1);
// Wait for PLL Lock
// Note that the Lock signal can be glitchy.
// Need to wait 100 us
// RTC is running at 32kHz.
// So wait 4 ticks of RTC.
uint32_t now = CLINT_REG(CLINT_MTIME);
while (CLINT_REG(CLINT_MTIME) - now < 4) ;
// Now it is safe to check for PLL Lock
while ((PRCI_REG(PRCI_PLLCFG) & PLL_LOCK(1)) == 0);
}
// Switch over to PLL Clock source
PRCI_REG(PRCI_PLLCFG) |= PLL_SEL(1);
// If we're running off HFXOSC, turn off the HFROSC to
// save power.
if (refsel) {
PRCI_REG(PRCI_HFROSCCFG) &= ~ROSC_EN(1);
}
}
void PRCI_use_default_clocks()
{
// Turn off the LFROSC
AON_REG(AON_LFROSC) &= ~ROSC_EN(1);
// Use HFROSC
PRCI_use_hfrosc(4, 16);
}
void PRCI_use_hfxosc(uint32_t finaldiv)
{
PRCI_use_pll(1, // Use HFXTAL
1, // Bypass = 1
0, // PLL settings don't matter
0, // PLL settings don't matter
0, // PLL settings don't matter
finaldiv,
-1,
-1);
}
// This is a generic function, which
// doesn't span the entire range of HFROSC settings.
// It only adjusts the trim, which can span a hundred MHz or so.
// This function does not check the legality of the PLL settings
// at all, and it is quite possible to configure invalid PLL settings
// this way.
// It returns the actual measured CPU frequency.
uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target )
{
uint32_t hfrosctrim = 0;
uint32_t hfroscdiv = 4;
uint32_t prev_trim = 0;
// In this function we use PLL settings which
// will give us a 32x multiplier from the output
// of the HFROSC source to the output of the
// PLL. We first measure our HFROSC to get the
// right trim, then finally use it as the PLL source.
// We should really check here that the f_cpu
// requested is something in the limit of the PLL. For
// now that is up to the user.
// This will undershoot for frequencies not divisible by 16.
uint32_t desired_hfrosc_freq = (f_cpu/ 16);
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
// Ignore the first run (for icache reasons)
uint32_t cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
uint32_t prev_freq = cpu_freq;
while ((cpu_freq < desired_hfrosc_freq) && (hfrosctrim < 0x1F)){
prev_trim = hfrosctrim;
prev_freq = cpu_freq;
hfrosctrim ++;
PRCI_use_hfrosc(hfroscdiv, hfrosctrim);
cpu_freq = PRCI_measure_mcycle_freq(3000, RTC_FREQ);
}
// We couldn't go low enough
if (prev_freq > desired_hfrosc_freq){
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
return cpu_freq;
}
// We couldn't go high enough
if (cpu_freq < desired_hfrosc_freq){
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
return cpu_freq;
}
// Check for over/undershoot
switch(target) {
case(PRCI_FREQ_CLOSEST):
if ((desired_hfrosc_freq - prev_freq) < (cpu_freq - desired_hfrosc_freq)) {
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
} else {
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, hfrosctrim);
}
break;
case(PRCI_FREQ_UNDERSHOOT):
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, prev_trim);
break;
default:
PRCI_use_pll(0, 0, 1, 31, 1, 1, hfroscdiv, hfrosctrim);
}
cpu_freq = PRCI_measure_mcycle_freq(1000, RTC_FREQ);
return cpu_freq;
}
#endif

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// See LICENSE file for license details
#ifndef _FE300PRCI_DRIVER_H_
#define _FE300PRCI_DRIVER_H_
//__BEGIN_DECLS
#include <unistd.h>
typedef enum prci_freq_target {
PRCI_FREQ_OVERSHOOT,
PRCI_FREQ_CLOSEST,
PRCI_FREQ_UNDERSHOOT
} PRCI_freq_target;
/* Measure and return the approximate frequency of the
* CPU, as given by measuring the mcycle counter against
* the mtime ticks.
*/
uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq);
/* Safely switch over to the HFROSC using the given div
* and trim settings.
*/
void PRCI_use_hfrosc(int div, int trim);
/* Safely switch over to the 16MHz HFXOSC,
* applying the finaldiv clock divider (1 is the lowest
* legal value).
*/
void PRCI_use_hfxosc(uint32_t finaldiv);
/* Safely switch over to the PLL using the given
* settings.
*
* Note that not all combinations of the inputs are actually
* legal, and this function does not check for their
* legality ("safely" means that this function won't turn off
* or glitch the clock the CPU is actually running off, but
* doesn't protect against you making it too fast or slow.)
*/
void PRCI_use_pll(int refsel, int bypass,
int r, int f, int q, int finaldiv,
int hfroscdiv, int hfrosctrim);
/* Use the default clocks configured at reset.
* This is ~16Mhz HFROSC and turns off the LFROSC
* (on the current FE310 Dev Platforms, an external LFROSC is
* used as it is more power efficient).
*/
void PRCI_use_default_clocks();
/* This routine will adjust the HFROSC trim
* while using HFROSC as the clock source,
* measure the resulting frequency, then
* use it as the PLL clock source,
* in an attempt to get over, under, or close to the
* requested frequency. It returns the actual measured
* frequency.
*
* Note that the requested frequency must be within the
* range supported by the PLL so not all values are
* achievable with this function, and not all
* are guaranteed to actually work. The PLL
* is rated higher than the hardware.
*
* There is no check on the desired f_cpu frequency, it
* is up to the user to specify something reasonable.
*/
uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target);
//__END_DECLS
#endif

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// See LICENSE for license details.
#ifndef _SIFIVE_HIFIVE1_H
#define _SIFIVE_HIFIVE1_H
#include <stdint.h>
/****************************************************************************
* GPIO Connections
*****************************************************************************/
// These are the GPIO bit offsets for the RGB LED on HiFive1 Board.
// These are also mapped to RGB LEDs on the Freedom E300 Arty
// FPGA
// Dev Kit.
#define RED_LED_OFFSET 22
#define GREEN_LED_OFFSET 19
#define BLUE_LED_OFFSET 21
// These are the GPIO bit offsets for the differen digital pins
// on the headers for both the HiFive1 Board and the Freedom E300 Arty FPGA Dev Kit.
#define PIN_0_OFFSET 16
#define PIN_1_OFFSET 17
#define PIN_2_OFFSET 18
#define PIN_3_OFFSET 19
#define PIN_4_OFFSET 20
#define PIN_5_OFFSET 21
#define PIN_6_OFFSET 22
#define PIN_7_OFFSET 23
#define PIN_8_OFFSET 0
#define PIN_9_OFFSET 1
#define PIN_10_OFFSET 2
#define PIN_11_OFFSET 3
#define PIN_12_OFFSET 4
#define PIN_13_OFFSET 5
//#define PIN_14_OFFSET 8 //This pin is not connected on either board.
#define PIN_15_OFFSET 9
#define PIN_16_OFFSET 10
#define PIN_17_OFFSET 11
#define PIN_18_OFFSET 12
#define PIN_19_OFFSET 13
// These are *PIN* numbers, not
// GPIO Offset Numbers.
#define PIN_SPI1_SCK (13u)
#define PIN_SPI1_MISO (12u)
#define PIN_SPI1_MOSI (11u)
#define PIN_SPI1_SS0 (10u)
#define PIN_SPI1_SS1 (14u)
#define PIN_SPI1_SS2 (15u)
#define PIN_SPI1_SS3 (16u)
#define SS_PIN_TO_CS_ID(x) \
((x==PIN_SPI1_SS0 ? 0 : \
(x==PIN_SPI1_SS1 ? 1 : \
(x==PIN_SPI1_SS2 ? 2 : \
(x==PIN_SPI1_SS3 ? 3 : \
-1)))))
// These buttons are present only on the Freedom E300 Arty Dev Kit.
#ifdef HAS_BOARD_BUTTONS
#define BUTTON_0_OFFSET 15
#define BUTTON_1_OFFSET 30
#define BUTTON_2_OFFSET 31
#define INT_DEVICE_BUTTON_0 (INT_GPIO_BASE + BUTTON_0_OFFSET)
#define INT_DEVICE_BUTTON_1 (INT_GPIO_BASE + BUTTON_1_OFFSET)
#define INT_DEVICE_BUTTON_2 (INT_GPIO_BASE + BUTTON_2_OFFSET)
#endif
#define HAS_HFXOSC 1
#define HAS_LFROSC_BYPASS 1
#define RTC_FREQ 10000000
void write_hex(int fd, unsigned long int hex);
#endif /* _SIFIVE_HIFIVE1_H */

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// See LICENSE for license details.
#ifndef _RISCV_BITS_H
#define _RISCV_BITS_H
#define likely(x) __builtin_expect((x), 1)
#define unlikely(x) __builtin_expect((x), 0)
#define ROUNDUP(a, b) ((((a)-1)/(b)+1)*(b))
#define ROUNDDOWN(a, b) ((a)/(b)*(b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
#define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
#define INSERT_FIELD(val, which, fieldval) (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
#define STR(x) XSTR(x)
#define XSTR(x) #x
#if __riscv_xlen == 64
# define SLL32 sllw
# define STORE sd
# define LOAD ld
# define LWU lwu
# define LOG_REGBYTES 3
#else
# define SLL32 sll
# define STORE sw
# define LOAD lw
# define LWU lw
# define LOG_REGBYTES 2
#endif
#define REGBYTES (1 << LOG_REGBYTES)
#endif

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// See LICENSE for license details.
/* Derived from <linux/const.h> */
#ifndef _SIFIVE_CONST_H
#define _SIFIVE_CONST_H
#ifdef __ASSEMBLER__
#define _AC(X,Y) X
#define _AT(T,X) X
#else
#define _AC(X,Y) (X##Y)
#define _AT(T,X) ((T)(X))
#endif /* !__ASSEMBLER__*/
#define _BITUL(x) (_AC(1,UL) << (x))
#define _BITULL(x) (_AC(1,ULL) << (x))
#endif /* _SIFIVE_CONST_H */

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// See LICENSE for license details.
#ifndef _SIFIVE_AON_H
#define _SIFIVE_AON_H
/* Register offsets */
#define AON_WDOGCFG 0x000
#define AON_WDOGCOUNT 0x008
#define AON_WDOGS 0x010
#define AON_WDOGFEED 0x018
#define AON_WDOGKEY 0x01C
#define AON_WDOGCMP 0x020
#define AON_RTCCFG 0x040
#define AON_RTCLO 0x048
#define AON_RTCHI 0x04C
#define AON_RTCS 0x050
#define AON_RTCCMP 0x060
#define AON_BACKUP0 0x080
#define AON_BACKUP1 0x084
#define AON_BACKUP2 0x088
#define AON_BACKUP3 0x08C
#define AON_BACKUP4 0x090
#define AON_BACKUP5 0x094
#define AON_BACKUP6 0x098
#define AON_BACKUP7 0x09C
#define AON_BACKUP8 0x0A0
#define AON_BACKUP9 0x0A4
#define AON_BACKUP10 0x0A8
#define AON_BACKUP11 0x0AC
#define AON_BACKUP12 0x0B0
#define AON_BACKUP13 0x0B4
#define AON_BACKUP14 0x0B8
#define AON_BACKUP15 0x0BC
#define AON_PMUWAKEUPI0 0x100
#define AON_PMUWAKEUPI1 0x104
#define AON_PMUWAKEUPI2 0x108
#define AON_PMUWAKEUPI3 0x10C
#define AON_PMUWAKEUPI4 0x110
#define AON_PMUWAKEUPI5 0x114
#define AON_PMUWAKEUPI6 0x118
#define AON_PMUWAKEUPI7 0x11C
#define AON_PMUSLEEPI0 0x120
#define AON_PMUSLEEPI1 0x124
#define AON_PMUSLEEPI2 0x128
#define AON_PMUSLEEPI3 0x12C
#define AON_PMUSLEEPI4 0x130
#define AON_PMUSLEEPI5 0x134
#define AON_PMUSLEEPI6 0x138
#define AON_PMUSLEEPI7 0x13C
#define AON_PMUIE 0x140
#define AON_PMUCAUSE 0x144
#define AON_PMUSLEEP 0x148
#define AON_PMUKEY 0x14C
#define AON_LFROSC 0x070
/* Constants */
#define AON_WDOGKEY_VALUE 0x51F15E
#define AON_WDOGFEED_VALUE 0xD09F00D
#define AON_WDOGCFG_SCALE 0x0000000F
#define AON_WDOGCFG_RSTEN 0x00000100
#define AON_WDOGCFG_ZEROCMP 0x00000200
#define AON_WDOGCFG_ENALWAYS 0x00001000
#define AON_WDOGCFG_ENCOREAWAKE 0x00002000
#define AON_WDOGCFG_CMPIP 0x10000000
#define AON_RTCCFG_SCALE 0x0000000F
#define AON_RTCCFG_ENALWAYS 0x00001000
#define AON_RTCCFG_CMPIP 0x10000000
#define AON_WAKEUPCAUSE_RESET 0x00
#define AON_WAKEUPCAUSE_RTC 0x01
#define AON_WAKEUPCAUSE_DWAKEUP 0x02
#define AON_WAKEUPCAUSE_AWAKEUP 0x03
#define AON_RESETCAUSE_POWERON 0x0000
#define AON_RESETCAUSE_EXTERNAL 0x0100
#define AON_RESETCAUSE_WATCHDOG 0x0200
#define AON_PMUCAUSE_WAKEUPCAUSE 0x00FF
#define AON_PMUCAUSE_RESETCAUSE 0xFF00
#endif /* _SIFIVE_AON_H */

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// See LICENSE for license details
#ifndef _SIFIVE_CLINT_H
#define _SIFIVE_CLINT_H
#define CLINT_MSIP 0x0000
#define CLINT_MSIP_size 0x4
#define CLINT_MTIMECMP 0x4000
#define CLINT_MTIMECMP_size 0x8
#define CLINT_MTIME 0xBFF8
#define CLINT_MTIME_size 0x8
#endif /* _SIFIVE_CLINT_H */

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// See LICENSE for license details.
#ifndef _SIFIVE_GPIO_H
#define _SIFIVE_GPIO_H
#define GPIO_INPUT_VAL (0x00)
#define GPIO_INPUT_EN (0x04)
#define GPIO_OUTPUT_EN (0x08)
#define GPIO_OUTPUT_VAL (0x0C)
#define GPIO_PULLUP_EN (0x10)
#define GPIO_DRIVE (0x14)
#define GPIO_RISE_IE (0x18)
#define GPIO_RISE_IP (0x1C)
#define GPIO_FALL_IE (0x20)
#define GPIO_FALL_IP (0x24)
#define GPIO_HIGH_IE (0x28)
#define GPIO_HIGH_IP (0x2C)
#define GPIO_LOW_IE (0x30)
#define GPIO_LOW_IP (0x34)
#define GPIO_IOF_EN (0x38)
#define GPIO_IOF_SEL (0x3C)
#define GPIO_OUTPUT_XOR (0x40)
#endif /* _SIFIVE_GPIO_H */

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// See LICENSE for license details.
#ifndef _SIFIVE_OTP_H
#define _SIFIVE_OTP_H
/* Register offsets */
#define OTP_LOCK 0x00
#define OTP_CK 0x04
#define OTP_OE 0x08
#define OTP_SEL 0x0C
#define OTP_WE 0x10
#define OTP_MR 0x14
#define OTP_MRR 0x18
#define OTP_MPP 0x1C
#define OTP_VRREN 0x20
#define OTP_VPPEN 0x24
#define OTP_A 0x28
#define OTP_D 0x2C
#define OTP_Q 0x30
#define OTP_READ_TIMINGS 0x34
#endif

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// See LICENSE for license details.
#ifndef PLIC_H
#define PLIC_H
#include <sifive/const.h>
// 32 bits per source
#define PLIC_PRIORITY_OFFSET _AC(0x0000,UL)
#define PLIC_PRIORITY_SHIFT_PER_SOURCE 2
// 1 bit per source (1 address)
#define PLIC_PENDING_OFFSET _AC(0x1000,UL)
#define PLIC_PENDING_SHIFT_PER_SOURCE 0
//0x80 per target
#define PLIC_ENABLE_OFFSET _AC(0x2000,UL)
#define PLIC_ENABLE_SHIFT_PER_TARGET 7
#define PLIC_THRESHOLD_OFFSET _AC(0x200000,UL)
#define PLIC_CLAIM_OFFSET _AC(0x200004,UL)
#define PLIC_THRESHOLD_SHIFT_PER_TARGET 12
#define PLIC_CLAIM_SHIFT_PER_TARGET 12
#define PLIC_MAX_SOURCE 1023
#define PLIC_SOURCE_MASK 0x3FF
#define PLIC_MAX_TARGET 15871
#define PLIC_TARGET_MASK 0x3FFF
#endif /* PLIC_H */

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// See LICENSE for license details.
#ifndef _SIFIVE_PRCI_H
#define _SIFIVE_PRCI_H
/* Register offsets */
#define PRCI_HFROSCCFG (0x0000)
#define PRCI_HFXOSCCFG (0x0004)
#define PRCI_PLLCFG (0x0008)
#define PRCI_PLLDIV (0x000C)
#define PRCI_PROCMONCFG (0x00F0)
/* Fields */
#define ROSC_DIV(x) (((x) & 0x2F) << 0 )
#define ROSC_TRIM(x) (((x) & 0x1F) << 16)
#define ROSC_EN(x) (((x) & 0x1 ) << 30)
#define ROSC_RDY(x) (((x) & 0x1 ) << 31)
#define XOSC_EN(x) (((x) & 0x1) << 30)
#define XOSC_RDY(x) (((x) & 0x1) << 31)
#define PLL_R(x) (((x) & 0x7) << 0)
// single reserved bit for F LSB.
#define PLL_F(x) (((x) & 0x3F) << 4)
#define PLL_Q(x) (((x) & 0x3) << 10)
#define PLL_SEL(x) (((x) & 0x1) << 16)
#define PLL_REFSEL(x) (((x) & 0x1) << 17)
#define PLL_BYPASS(x) (((x) & 0x1) << 18)
#define PLL_LOCK(x) (((x) & 0x1) << 31)
#define PLL_R_default 0x1
#define PLL_F_default 0x1F
#define PLL_Q_default 0x3
#define PLL_REFSEL_HFROSC 0x0
#define PLL_REFSEL_HFXOSC 0x1
#define PLL_SEL_HFROSC 0x0
#define PLL_SEL_PLL 0x1
#define PLL_FINAL_DIV(x) (((x) & 0x3F) << 0)
#define PLL_FINAL_DIV_BY_1(x) (((x) & 0x1 ) << 8)
#define PROCMON_DIV(x) (((x) & 0x1F) << 0)
#define PROCMON_TRIM(x) (((x) & 0x1F) << 8)
#define PROCMON_EN(x) (((x) & 0x1) << 16)
#define PROCMON_SEL(x) (((x) & 0x3) << 24)
#define PROCMON_NT_EN(x) (((x) & 0x1) << 28)
#define PROCMON_SEL_HFCLK 0
#define PROCMON_SEL_HFXOSCIN 1
#define PROCMON_SEL_PLLOUTDIV 2
#define PROCMON_SEL_PROCMON 3
#endif // _SIFIVE_PRCI_H

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// See LICENSE for license details.
#ifndef _SIFIVE_PWM_H
#define _SIFIVE_PWM_H
/* Register offsets */
#define PWM_CFG 0x00
#define PWM_COUNT 0x08
#define PWM_S 0x10
#define PWM_CMP0 0x20
#define PWM_CMP1 0x24
#define PWM_CMP2 0x28
#define PWM_CMP3 0x2C
/* Constants */
#define PWM_CFG_SCALE 0x0000000F
#define PWM_CFG_STICKY 0x00000100
#define PWM_CFG_ZEROCMP 0x00000200
#define PWM_CFG_DEGLITCH 0x00000400
#define PWM_CFG_ENALWAYS 0x00001000
#define PWM_CFG_ONESHOT 0x00002000
#define PWM_CFG_CMP0CENTER 0x00010000
#define PWM_CFG_CMP1CENTER 0x00020000
#define PWM_CFG_CMP2CENTER 0x00040000
#define PWM_CFG_CMP3CENTER 0x00080000
#define PWM_CFG_CMP0GANG 0x01000000
#define PWM_CFG_CMP1GANG 0x02000000
#define PWM_CFG_CMP2GANG 0x04000000
#define PWM_CFG_CMP3GANG 0x08000000
#define PWM_CFG_CMP0IP 0x10000000
#define PWM_CFG_CMP1IP 0x20000000
#define PWM_CFG_CMP2IP 0x40000000
#define PWM_CFG_CMP3IP 0x80000000
#endif /* _SIFIVE_PWM_H */

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// See LICENSE for license details.
#ifndef _SIFIVE_SPI_H
#define _SIFIVE_SPI_H
/* Register offsets */
#define SPI_REG_SCKDIV 0x00
#define SPI_REG_SCKMODE 0x04
#define SPI_REG_CSID 0x10
#define SPI_REG_CSDEF 0x14
#define SPI_REG_CSMODE 0x18
#define SPI_REG_DCSSCK 0x28
#define SPI_REG_DSCKCS 0x2a
#define SPI_REG_DINTERCS 0x2c
#define SPI_REG_DINTERXFR 0x2e
#define SPI_REG_FMT 0x40
#define SPI_REG_TXFIFO 0x48
#define SPI_REG_RXFIFO 0x4c
#define SPI_REG_TXCTRL 0x50
#define SPI_REG_RXCTRL 0x54
#define SPI_REG_FCTRL 0x60
#define SPI_REG_FFMT 0x64
#define SPI_REG_IE 0x70
#define SPI_REG_IP 0x74
/* Fields */
#define SPI_SCK_POL 0x1
#define SPI_SCK_PHA 0x2
#define SPI_FMT_PROTO(x) ((x) & 0x3)
#define SPI_FMT_ENDIAN(x) (((x) & 0x1) << 2)
#define SPI_FMT_DIR(x) (((x) & 0x1) << 3)
#define SPI_FMT_LEN(x) (((x) & 0xf) << 16)
/* TXCTRL register */
#define SPI_TXWM(x) ((x) & 0xffff)
/* RXCTRL register */
#define SPI_RXWM(x) ((x) & 0xffff)
#define SPI_IP_TXWM 0x1
#define SPI_IP_RXWM 0x2
#define SPI_FCTRL_EN 0x1
#define SPI_INSN_CMD_EN 0x1
#define SPI_INSN_ADDR_LEN(x) (((x) & 0x7) << 1)
#define SPI_INSN_PAD_CNT(x) (((x) & 0xf) << 4)
#define SPI_INSN_CMD_PROTO(x) (((x) & 0x3) << 8)
#define SPI_INSN_ADDR_PROTO(x) (((x) & 0x3) << 10)
#define SPI_INSN_DATA_PROTO(x) (((x) & 0x3) << 12)
#define SPI_INSN_CMD_CODE(x) (((x) & 0xff) << 16)
#define SPI_INSN_PAD_CODE(x) (((x) & 0xff) << 24)
#define SPI_TXFIFO_FULL (1 << 31)
#define SPI_RXFIFO_EMPTY (1 << 31)
/* Values */
#define SPI_CSMODE_AUTO 0
#define SPI_CSMODE_HOLD 2
#define SPI_CSMODE_OFF 3
#define SPI_DIR_RX 0
#define SPI_DIR_TX 1
#define SPI_PROTO_S 0
#define SPI_PROTO_D 1
#define SPI_PROTO_Q 2
#define SPI_ENDIAN_MSB 0
#define SPI_ENDIAN_LSB 1
#endif /* _SIFIVE_SPI_H */

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// See LICENSE for license details.
#ifndef _SIFIVE_UART_H
#define _SIFIVE_UART_H
/* Register offsets */
#define UART_REG_TXFIFO 0x00
#define UART_REG_RXFIFO 0x04
#define UART_REG_TXCTRL 0x08
#define UART_REG_RXCTRL 0x0c
#define UART_REG_IE 0x10
#define UART_REG_IP 0x14
#define UART_REG_DIV 0x18
/* TXCTRL register */
#define UART_TXEN 0x1
#define UART_TXWM(x) (((x) & 0xffff) << 16)
/* RXCTRL register */
#define UART_RXEN 0x1
#define UART_RXWM(x) (((x) & 0xffff) << 16)
/* IP register */
#define UART_IP_TXWM 0x1
#define UART_IP_RXWM 0x2
#endif /* _SIFIVE_UART_H */

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// See LICENSE for license details.
#ifndef _SECTIONS_H
#define _SECTIONS_H
extern unsigned char _rom[];
extern unsigned char _rom_end[];
extern unsigned char _ram[];
extern unsigned char _ram_end[];
extern unsigned char _ftext[];
extern unsigned char _etext[];
extern unsigned char _fbss[];
extern unsigned char _ebss[];
extern unsigned char _end[];
#endif /* _SECTIONS_H */

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#ifndef SIFIVE_SMP
#define SIFIVE_SMP
// The maximum number of HARTs this code supports
#ifndef MAX_HARTS
#define MAX_HARTS 32
#endif
#define CLINT_END_HART_IPI CLINT_CTRL_ADDR + (MAX_HARTS*4)
// The hart that non-SMP tests should run on
#ifndef NONSMP_HART
#define NONSMP_HART 0
#endif
/* If your test cannot handle multiple-threads, use this:
* smp_disable(reg1)
*/
#define smp_disable(reg1, reg2) \
csrr reg1, mhartid ;\
li reg2, NONSMP_HART ;\
beq reg1, reg2, hart0_entry ;\
42: ;\
wfi ;\
j 42b ;\
hart0_entry:
/* If your test needs to temporarily block multiple-threads, do this:
* smp_pause(reg1, reg2)
* ... single-threaded work ...
* smp_resume(reg1, reg2)
* ... multi-threaded work ...
*/
#define smp_pause(reg1, reg2) \
li reg2, 0x8 ;\
csrw mie, reg2 ;\
csrr reg2, mhartid ;\
bnez reg2, 42f
#define smp_resume(reg1, reg2) \
li reg1, CLINT_CTRL_ADDR ;\
41: ;\
li reg2, 1 ;\
sw reg2, 0(reg1) ;\
addi reg1, reg1, 4 ;\
li reg2, CLINT_END_HART_IPI ;\
blt reg1, reg2, 41b ;\
42: ;\
wfi ;\
csrr reg2, mip ;\
andi reg2, reg2, 0x8 ;\
beqz reg2, 42b ;\
li reg1, CLINT_CTRL_ADDR ;\
csrr reg2, mhartid ;\
slli reg2, reg2, 2 ;\
add reg2, reg2, reg1 ;\
sw zero, 0(reg2) ;\
41: ;\
lw reg2, 0(reg1) ;\
bnez reg2, 41b ;\
addi reg1, reg1, 4 ;\
li reg2, CLINT_END_HART_IPI ;\
blt reg1, reg2, 41b
#endif

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@ -0,0 +1,263 @@
//See LICENSE for license details.
/**
* @file init.c
* @brief support hifive1-rev-B-board init function
* @version 1.0
* @author AIIT XUOS Lab
* @date 2021-04-25
*/
/*************************************************
File name: init.c
Description: support hifive1-rev-B-board init function
Others: take freedom-e-sdk v20180402/bsp/env/init.c for references
https://github.com/sifive/freedom-e-sdk/releases/tag/v20180402
History:
1. Date: 2021-04-25
Author: AIIT XUOS Lab
Modification:
1. Modify read_csr write_csr function name
2. comment some unuse code
*************************************************/
#include <stdint.h>
#include <stdio.h>
#include <unistd.h>
#include "platform.h"
#include "encoding.h"
extern int main(int argc, char** argv);
extern void trap_entry();
static unsigned long mtime_lo(void)
{
return *(volatile unsigned long *)(CLINT_CTRL_ADDR + CLINT_MTIME);
}
#ifdef __riscv32
static uint32_t mtime_hi(void)
{
return *(volatile uint32_t *)(CLINT_CTRL_ADDR + CLINT_MTIME + 4);
}
uint64_t get_timer_value()
{
while (1) {
uint32_t hi = mtime_hi();
uint32_t lo = mtime_lo();
if (hi == mtime_hi())
return ((uint64_t)hi << 32) | lo;
}
}
#else /* __riscv32 */
uint64_t get_timer_value()
{
return mtime_lo();
}
#endif
unsigned long get_timer_freq()
{
return 32768;
}
static void use_hfrosc(int div, int trim)
{
// Make sure the HFROSC is running at its default setting
PRCI_REG(PRCI_HFROSCCFG) = (ROSC_DIV(div) | ROSC_TRIM(trim) | ROSC_EN(1));
while ((PRCI_REG(PRCI_HFROSCCFG) & ROSC_RDY(1)) == 0) ;
PRCI_REG(PRCI_PLLCFG) &= ~PLL_SEL(1);
}
void use_pll(int refsel, int bypass, int r, int f, int q)
{
// Ensure that we aren't running off the PLL before we mess with it.
if (PRCI_REG(PRCI_PLLCFG) & PLL_SEL(1)) {
// Make sure the HFROSC is running at its default setting
use_hfrosc(4, 16);
}
// Set PLL Source to be HFXOSC if available.
uint32_t config_value = 0;
config_value |= PLL_REFSEL(refsel);
if (bypass) {
// Bypass
config_value |= PLL_BYPASS(1);
PRCI_REG(PRCI_PLLCFG) = config_value;
// If we don't have an HFXTAL, this doesn't really matter.
// Set our Final output divide to divide-by-1:
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
} else {
// In case we are executing from QSPI,
// (which is quite likely) we need to
// set the QSPI clock divider appropriately
// before boosting the clock frequency.
// Div = f_sck/2
SPI0_REG(SPI_REG_SCKDIV) = 8;
// Set DIV Settings for PLL
// Both HFROSC and HFXOSC are modeled as ideal
// 16MHz sources (assuming dividers are set properly for
// HFROSC).
// (Legal values of f_REF are 6-48MHz)
// Set DIVR to divide-by-2 to get 8MHz frequency
// (legal values of f_R are 6-12 MHz)
config_value |= PLL_BYPASS(1);
config_value |= PLL_R(r);
// Set DIVF to get 512Mhz frequncy
// There is an implied multiply-by-2, 16Mhz.
// So need to write 32-1
// (legal values of f_F are 384-768 MHz)
config_value |= PLL_F(f);
// Set DIVQ to divide-by-2 to get 256 MHz frequency
// (legal values of f_Q are 50-400Mhz)
config_value |= PLL_Q(q);
// Set our Final output divide to divide-by-1:
PRCI_REG(PRCI_PLLDIV) = (PLL_FINAL_DIV_BY_1(1) | PLL_FINAL_DIV(0));
PRCI_REG(PRCI_PLLCFG) = config_value;
// Un-Bypass the PLL.
PRCI_REG(PRCI_PLLCFG) &= ~PLL_BYPASS(1);
// Wait for PLL Lock
// Note that the Lock signal can be glitchy.
// Need to wait 100 us
// RTC is running at 32kHz.
// So wait 4 ticks of RTC.
uint32_t now = mtime_lo();
while (mtime_lo() - now < 4) ;
// Now it is safe to check for PLL Lock
while ((PRCI_REG(PRCI_PLLCFG) & PLL_LOCK(1)) == 0) ;
}
// Switch over to PLL Clock source
PRCI_REG(PRCI_PLLCFG) |= PLL_SEL(1);
}
void use_default_clocks()
{
// Turn off the LFROSC
AON_REG(AON_LFROSC) &= ~ROSC_EN(1);
// Use HFROSC
use_hfrosc(4, 16);
}
static unsigned long __attribute__((noinline)) measure_cpu_freq(size_t n)
{
unsigned long start_mtime, delta_mtime;
unsigned long mtime_freq = get_timer_freq();
// Don't start measuruing until we see an mtime tick
unsigned long tmp = mtime_lo();
do {
start_mtime = mtime_lo();
} while (start_mtime == tmp);
unsigned long start_mcycle = READ_CSR(mcycle);
do {
delta_mtime = mtime_lo() - start_mtime;
} while (delta_mtime < n);
unsigned long delta_mcycle = READ_CSR(mcycle) - start_mcycle;
return (delta_mcycle / delta_mtime) * mtime_freq
+ ((delta_mcycle % delta_mtime) * mtime_freq) / delta_mtime;
}
unsigned long get_cpu_freq()
{
static uint32_t cpu_freq;
if (!cpu_freq) {
// warm up I$
measure_cpu_freq(1);
// measure for real
cpu_freq = measure_cpu_freq(10);
}
return cpu_freq;
}
#if 0
static void uart_init(size_t baud_rate)
{
GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK;
GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK;
UART0_REG(UART_REG_DIV) = get_cpu_freq() / baud_rate - 1;
UART0_REG(UART_REG_TXCTRL) |= UART_TXEN;
}
#ifdef USE_PLIC
extern void handle_m_ext_interrupt();
#endif
#ifdef USE_M_TIME
extern void handle_m_time_interrupt();
#endif
uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc)
{
if (0){
#ifdef USE_PLIC
// External Machine-Level interrupt from PLIC
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT)) {
handle_m_ext_interrupt();
#endif
#ifdef USE_M_TIME
// External Machine-Level interrupt from PLIC
} else if ((mcause & MCAUSE_INT) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER)){
handle_m_time_interrupt();
#endif
}
else {
write(1, "trap\n", 5);
_exit(1 + mcause);
}
return epc;
}
void _init()
{
#ifndef NO_INIT
use_default_clocks();
use_pll(0, 0, 1, 31, 1);
uart_init(115200);
printf("core freq at %d Hz\n", get_cpu_freq());
write_csr(mtvec, &trap_entry);
if (read_csr(misa) & (1 << ('F' - 'A'))) { // if F extension is present
write_csr(mstatus, MSTATUS_FS); // allow FPU instructions without trapping
write_csr(fcsr, 0); // initialize rounding mode, undefined at reset
}
#endif
}
void _fini()
{
}
#endif

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@ -0,0 +1,133 @@
// See LICENSE for license details.
#ifndef _SIFIVE_PLATFORM_H
#define _SIFIVE_PLATFORM_H
// Some things missing from the official encoding.h
#define MCAUSE_INT 0x80000000
#define MCAUSE_CAUSE 0x7FFFFFFF
#include "sifive/const.h"
#include "sifive/devices/aon.h"
#include "sifive/devices/clint.h"
#include "sifive/devices/gpio.h"
#include "sifive/devices/otp.h"
#include "sifive/devices/plic.h"
#include "sifive/devices/prci.h"
#include "sifive/devices/pwm.h"
#include "sifive/devices/spi.h"
#include "sifive/devices/uart.h"
/****************************************************************************
* Platform definitions
*****************************************************************************/
// Memory map
#define MASKROM_MEM_ADDR _AC(0x00001000,UL)
#define TRAPVEC_TABLE_CTRL_ADDR _AC(0x00001010,UL)
#define OTP_MEM_ADDR _AC(0x00020000,UL)
#define CLINT_CTRL_ADDR _AC(0x02000000,UL)
#define PLIC_CTRL_ADDR _AC(0x0C000000,UL)
#define AON_CTRL_ADDR _AC(0x10000000,UL)
#define PRCI_CTRL_ADDR _AC(0x10008000,UL)
#define OTP_CTRL_ADDR _AC(0x10010000,UL)
#define GPIO_CTRL_ADDR _AC(0x10012000,UL)
#define UART0_CTRL_ADDR _AC(0x10013000,UL)
#define SPI0_CTRL_ADDR _AC(0x10014000,UL)
#define PWM0_CTRL_ADDR _AC(0x10015000,UL)
#define UART1_CTRL_ADDR _AC(0x10023000,UL)
#define SPI1_CTRL_ADDR _AC(0x10024000,UL)
#define PWM1_CTRL_ADDR _AC(0x10025000,UL)
#define SPI2_CTRL_ADDR _AC(0x10034000,UL)
#define PWM2_CTRL_ADDR _AC(0x10035000,UL)
#define SPI0_MEM_ADDR _AC(0x20000000,UL)
#define MEM_CTRL_ADDR _AC(0x80000000,UL)
// IOF masks
#define IOF0_SPI1_MASK _AC(0x000007FC,UL)
#define SPI11_NUM_SS (4)
#define IOF_SPI1_SS0 (2u)
#define IOF_SPI1_SS1 (8u)
#define IOF_SPI1_SS2 (9u)
#define IOF_SPI1_SS3 (10u)
#define IOF_SPI1_MOSI (3u)
#define IOF_SPI1_MISO (4u)
#define IOF_SPI1_SCK (5u)
#define IOF_SPI1_DQ0 (3u)
#define IOF_SPI1_DQ1 (4u)
#define IOF_SPI1_DQ2 (6u)
#define IOF_SPI1_DQ3 (7u)
#define IOF0_SPI2_MASK _AC(0xFC000000,UL)
#define SPI2_NUM_SS (1)
#define IOF_SPI2_SS0 (26u)
#define IOF_SPI2_MOSI (27u)
#define IOF_SPI2_MISO (28u)
#define IOF_SPI2_SCK (29u)
#define IOF_SPI2_DQ0 (27u)
#define IOF_SPI2_DQ1 (28u)
#define IOF_SPI2_DQ2 (30u)
#define IOF_SPI2_DQ3 (31u)
//#define IOF0_I2C_MASK _AC(0x00003000,UL)
#define IOF0_UART0_MASK _AC(0x00030000, UL)
#define IOF_UART0_RX (16u)
#define IOF_UART0_TX (17u)
#define IOF0_UART1_MASK _AC(0x03000000, UL)
#define IOF_UART1_RX (24u)
#define IOF_UART1_TX (25u)
#define IOF1_PWM0_MASK _AC(0x0000000F, UL)
#define IOF1_PWM1_MASK _AC(0x00780000, UL)
#define IOF1_PWM2_MASK _AC(0x00003C00, UL)
// Interrupt numbers
#define INT_RESERVED 0
#define INT_WDOGCMP 1
#define INT_RTCCMP 2
#define INT_UART0_BASE 3
#define INT_UART1_BASE 4
#define INT_SPI0_BASE 5
#define INT_SPI1_BASE 6
#define INT_SPI2_BASE 7
#define INT_GPIO_BASE 8
#define INT_PWM0_BASE 40
#define INT_PWM1_BASE 44
#define INT_PWM2_BASE 48
// Helper functions
#define _REG32(p, i) (*(volatile uint32_t *) ((p) + (i)))
#define _REG32P(p, i) ((volatile uint32_t *) ((p) + (i)))
#define AON_REG(offset) _REG32(AON_CTRL_ADDR, offset)
#define CLINT_REG(offset) _REG32(CLINT_CTRL_ADDR, offset)
#define GPIO_REG(offset) _REG32(GPIO_CTRL_ADDR, offset)
#define OTP_REG(offset) _REG32(OTP_CTRL_ADDR, offset)
#define PLIC_REG(offset) _REG32(PLIC_CTRL_ADDR, offset)
#define PRCI_REG(offset) _REG32(PRCI_CTRL_ADDR, offset)
#define PWM0_REG(offset) _REG32(PWM0_CTRL_ADDR, offset)
#define PWM1_REG(offset) _REG32(PWM1_CTRL_ADDR, offset)
#define PWM2_REG(offset) _REG32(PWM2_CTRL_ADDR, offset)
#define SPI0_REG(offset) _REG32(SPI0_CTRL_ADDR, offset)
#define SPI1_REG(offset) _REG32(SPI1_CTRL_ADDR, offset)
#define SPI2_REG(offset) _REG32(SPI2_CTRL_ADDR, offset)
#define UART0_REG(offset) _REG32(UART0_CTRL_ADDR, offset)
#define UART1_REG(offset) _REG32(UART1_CTRL_ADDR, offset)
// Misc
#include <stdint.h>
#define NUM_GPIO 32
#define PLIC_NUM_INTERRUPTS 52
#define PLIC_NUM_PRIORITIES 7
#define IRQN_MAX PLIC_NUM_INTERRUPTS
#include "hifive1.h"
unsigned long get_cpu_freq(void);
unsigned long get_timer_freq(void);
uint64_t get_timer_value(void);
#endif /* _SIFIVE_PLATFORM_H */

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@ -0,0 +1,127 @@
// See LICENSE for license details.
#include "sifive/devices/plic.h"
#include "plic/plic_driver.h"
#include "platform.h"
#include "encoding.h"
#include <string.h>
// Note that there are no assertions or bounds checking on these
// parameter values.
void volatile_memzero(uint8_t * base, unsigned int size)
{
volatile uint8_t * ptr;
for (ptr = base; ptr < (base + size); ptr++){
*ptr = 0;
}
}
void PLIC_init (
plic_instance_t * this_plic,
uintptr_t base_addr,
uint32_t num_sources,
uint32_t num_priorities
)
{
this_plic->base_addr = base_addr;
this_plic->num_sources = num_sources;
this_plic->num_priorities = num_priorities;
// Disable all interrupts (don't assume that these registers are reset).
unsigned long hart_id = READ_CSR(mhartid);
volatile_memzero((uint8_t*) (this_plic->base_addr +
PLIC_ENABLE_OFFSET +
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET)),
(num_sources + 8) / 8);
// Set all priorities to 0 (equal priority -- don't assume that these are reset).
volatile_memzero ((uint8_t *)(this_plic->base_addr +
PLIC_PRIORITY_OFFSET),
(num_sources + 1) << PLIC_PRIORITY_SHIFT_PER_SOURCE);
// Set the threshold to 0.
volatile plic_threshold* threshold = (plic_threshold*)
(this_plic->base_addr +
PLIC_THRESHOLD_OFFSET +
(hart_id << PLIC_THRESHOLD_SHIFT_PER_TARGET));
*threshold = 0;
}
void PLIC_set_threshold (plic_instance_t * this_plic,
plic_threshold threshold){
unsigned long hart_id = READ_CSR(mhartid);
volatile plic_threshold* threshold_ptr = (plic_threshold*) (this_plic->base_addr +
PLIC_THRESHOLD_OFFSET +
(hart_id << PLIC_THRESHOLD_SHIFT_PER_TARGET));
*threshold_ptr = threshold;
}
void PLIC_enable_interrupt (plic_instance_t * this_plic, plic_source source){
unsigned long hart_id = READ_CSR(mhartid);
volatile uint8_t * current_ptr = (volatile uint8_t *)(this_plic->base_addr +
PLIC_ENABLE_OFFSET +
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET) +
(source >> 3));
uint8_t current = *current_ptr;
current = current | ( 1 << (source & 0x7));
*current_ptr = current;
}
void PLIC_disable_interrupt (plic_instance_t * this_plic, plic_source source){
unsigned long hart_id = READ_CSR(mhartid);
volatile uint8_t * current_ptr = (volatile uint8_t *) (this_plic->base_addr +
PLIC_ENABLE_OFFSET +
(hart_id << PLIC_ENABLE_SHIFT_PER_TARGET) +
(source >> 3));
uint8_t current = *current_ptr;
current = current & ~(( 1 << (source & 0x7)));
*current_ptr = current;
}
void PLIC_set_priority (plic_instance_t * this_plic, plic_source source, plic_priority priority){
if (this_plic->num_priorities > 0) {
volatile plic_priority * priority_ptr = (volatile plic_priority *)
(this_plic->base_addr +
PLIC_PRIORITY_OFFSET +
(source << PLIC_PRIORITY_SHIFT_PER_SOURCE));
*priority_ptr = priority;
}
}
plic_source PLIC_claim_interrupt(plic_instance_t * this_plic){
unsigned long hart_id = READ_CSR(mhartid);
volatile plic_source * claim_addr = (volatile plic_source * )
(this_plic->base_addr +
PLIC_CLAIM_OFFSET +
(hart_id << PLIC_CLAIM_SHIFT_PER_TARGET));
return *claim_addr;
}
void PLIC_complete_interrupt(plic_instance_t * this_plic, plic_source source){
unsigned long hart_id = READ_CSR(mhartid);
volatile plic_source * claim_addr = (volatile plic_source *) (this_plic->base_addr +
PLIC_CLAIM_OFFSET +
(hart_id << PLIC_CLAIM_SHIFT_PER_TARGET));
*claim_addr = source;
}

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@ -0,0 +1,51 @@
// See LICENSE file for licence details
#ifndef PLIC_DRIVER_H
#define PLIC_DRIVER_H
//__BEGIN_DECLS
#include "platform.h"
typedef struct __plic_instance_t
{
uintptr_t base_addr;
uint32_t num_sources;
uint32_t num_priorities;
} plic_instance_t;
typedef uint32_t plic_source;
typedef uint32_t plic_priority;
typedef uint32_t plic_threshold;
void PLIC_init (
plic_instance_t * this_plic,
uintptr_t base_addr,
uint32_t num_sources,
uint32_t num_priorities
);
void PLIC_set_threshold (plic_instance_t * this_plic,
plic_threshold threshold);
void PLIC_enable_interrupt (plic_instance_t * this_plic,
plic_source source);
void PLIC_disable_interrupt (plic_instance_t * this_plic,
plic_source source);
void PLIC_set_priority (plic_instance_t * this_plic,
plic_source source,
plic_priority priority);
plic_source PLIC_claim_interrupt(plic_instance_t * this_plic);
void PLIC_complete_interrupt(plic_instance_t * this_plic,
plic_source source);
//__END_DECLS
#endif

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@ -70,6 +70,16 @@ KERNELPATHS :=-I$(BSP_ROOT) \
-I$(KERNEL_ROOT)/include #
endif
ifeq ($(BSP_ROOT),$(KERNEL_ROOT)/board/hifive1-emulator)
KERNELPATHS :=-I$(BSP_ROOT) \
-I$(BSP_ROOT)/third_party_driver \
-I$(BSP_ROOT)/third_party_driver/include \
-I$(BSP_ROOT)/third_party_driver/include/sifive \
-I$(BSP_ROOT)/third_party_driver/include/sifive/devices \
-I$(BSP_ROOT)/third_party_driver/fe300prci \
-I$(BSP_ROOT)/third_party_driver/plic\
-I$(KERNEL_ROOT)/include #
endif
ifeq ($(BSP_ROOT),$(KERNEL_ROOT)/board/aiit-riscv64-board)
KERNELPATHS :=-I$(BSP_ROOT) \