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-rw-r--r--bsp/env/coreplexip-e31-arty/init.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/bsp/env/coreplexip-e31-arty/init.c b/bsp/env/coreplexip-e31-arty/init.c
deleted file mode 100644
index 1f8b679..0000000
--- a/bsp/env/coreplexip-e31-arty/init.c
+++ /dev/null
@@ -1,122 +0,0 @@
-//See LICENSE for license details.
-#include <stdint.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include "platform.h"
-#include "encoding.h"
-
-#define CPU_FREQ 65000000
-#define XSTR(x) #x
-#define STR(x) XSTR(x)
-
-#ifndef VECT_IRQ
- #define TRAP_ENTRY trap_entry
-#else
- #define TRAP_ENTRY vtrap_entry
-#endif
-
-extern int main(int argc, char** argv);
-extern void TRAP_ENTRY();
-
-unsigned long get_cpu_freq()
-{
- return CPU_FREQ;
-}
-
-unsigned long get_timer_freq()
-{
- return get_cpu_freq();
-}
-
-uint64_t get_timer_value()
-{
-#if __riscv_xlen == 32
- while (1) {
- uint32_t hi = read_csr(mcycleh);
- uint32_t lo = read_csr(mcycle);
- if (hi == read_csr(mcycleh))
- return ((uint64_t)hi << 32) | lo;
- }
-#else
- return read_csr(mcycle);
-#endif
-}
-
-static void uart_init(size_t baud_rate)
-{
- UART0_REG(UART_REG_DIV) = (get_cpu_freq() / 2) / 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
-
-#ifdef USE_LOCAL_ISR
-typedef void (*my_interrupt_function_ptr_t) (void);
-extern my_interrupt_function_ptr_t localISR[];
-#endif
-
-#ifndef VECT_IRQ
-uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc) __attribute__((noinline));
-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
-#ifdef USE_LOCAL_ISR
- } else if (mcause & MCAUSE_INT) {
- localISR[mcause & MCAUSE_CAUSE] ();
-#endif
- }
- else {
- write(1, "Unhandled Trap:\n", 16);
- _exit(1 + mcause);
- }
- return epc;
-}
-#endif
-
-#ifdef USE_CLIC
-void trap_entry(void) __attribute__((interrupt("SiFive-CLIC-preemptible"), aligned(64)));
-void trap_entry(void)
-{
- unsigned long mcause = read_csr(mcause);
- unsigned long mepc = read_csr(mepc);
- handle_trap(mcause, mepc);
-}
-#endif
-
-void _init()
-{
- #ifndef NO_INIT
- uart_init(115200);
-
- puts("core freq at " STR(CPU_FREQ) " Hz\n");
-
-#ifdef USE_CLIC
- write_csr(mtvec, ((unsigned long)&trap_entry | MTVEC_CLIC));
-#else
- write_csr(mtvec, ((unsigned long)&TRAP_ENTRY | MTVEC_VECTORED));
-#endif
-
- #endif
-}
-
-void _fini()
-{
-}