62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
#include <stdint.h>
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#include "printf.h"
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#include "main.h"
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xilinx_uartlite_handle_t soc_uart;
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xilinx_gpio_handle_t soc_gpio;
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void _print_arch_string(uint64_t misa);
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int main(int argc, char *argv[]) {
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printf("Running on a Bluespec flute core.\r\n");
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uint64_t csr = 0;
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__csrr("misa", csr);
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printf("MISA: 0x%016llx, this is a ", csr);
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_print_arch_string(csr);
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printf(" processor.\r\n");
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printf("System clock frequency: %luHz\r\n", SYS_CLK_FREQ);
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xilinx_gpio_port_mode(&soc_gpio, 0, 0x000000FF); // All output
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uint8_t led_data = 0x01;
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for(;;) {
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System_Delay(500);
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__csrr("mcycle", csr);
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printf("mcycle: 0x%016llx\r\n", csr);
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xilinx_gpio_port_write(&soc_gpio, 0, ~led_data);
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led_data <<= 1U;
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if(led_data == 0) led_data = 0x01;
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}
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return 0;
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}
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void _print_arch_string(uint64_t misa) {
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switch(misa >> 62) {
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case 1:
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printf("RV32");
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break;
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case 2:
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printf("RV64");
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break;
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case 3:
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printf("RV128");
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break;
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}
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for(uint8_t i = 0; i < 26; i++) {
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if(misa >> i & 0x01ULL) {
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printf("%c", 'A' + i);
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}
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}
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} |