diff options
Diffstat (limited to 'bsp/env/coreip-e2-arty/init.c')
-rw-r--r-- | bsp/env/coreip-e2-arty/init.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/bsp/env/coreip-e2-arty/init.c b/bsp/env/coreip-e2-arty/init.c deleted file mode 100644 index 3a4c77c..0000000 --- a/bsp/env/coreip-e2-arty/init.c +++ /dev/null @@ -1,98 +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 32000000 -#define XSTR(x) #x -#define STR(x) XSTR(x) - -extern int main(int argc, char** argv); - -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() ) / baud_rate - 1; - UART0_REG(UART_REG_TXCTRL) |= UART_TXEN; -} - - -typedef void (*interrupt_function_ptr_t) (void); -interrupt_function_ptr_t localISR[CLIC_NUM_INTERRUPTS] __attribute__((aligned(64))); - - -void trap_entry(void) __attribute__((interrupt, aligned(64))); -void trap_entry(void) -{ - unsigned long mcause = read_csr(mcause); - unsigned long mepc = read_csr(mepc); - if (mcause & MCAUSE_INT) { - localISR[mcause & MCAUSE_CAUSE] (); - } else { - while(1); - } -} - -#ifdef CLIC_DIRECT -#else -void default_handler(void)__attribute__((interrupt));; -#endif -void default_handler(void) -{ - puts("default handler\n"); - while(1); -} - -void _init() -{ -#ifndef NO_INIT - uart_init(115200); - - puts("core freq at " STR(CPU_FREQ) " Hz\n"); - -//initialize vector table - int i=0; - while(i<CLIC_NUM_INTERRUPTS) { - localISR[i++] = default_handler; - } - - write_csr(mtvt, localISR); - -#ifdef CLIC_DIRECT - write_csr(mtvec, ((unsigned long)&trap_entry | MTVEC_CLIC)); -#else - write_csr(mtvec, ((unsigned long)&trap_entry | MTVEC_CLIC_VECT)); -#endif - -#endif -} - -void _fini() -{ -} |