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picorv32
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Improve PicoSoC example firmware

This commit is contained in:
Clifford Wolf 2017-09-20 23:53:53 +02:00
parent dea9b88249
commit c00811e8e4
1 changed files with 54 additions and 11 deletions
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65
picosoc/firmware.c
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@ -1,4 +1,5 @@
#include <stdint.h> #include <stdint.h>
#include <stdbool.h>
// a pointer to this is a null pointer, but the compiler does not // a pointer to this is a null pointer, but the compiler does not
// know that because "sram" is a linker symbol from sections.lds. // know that because "sram" is a linker symbol from sections.lds.
@ -167,7 +168,7 @@ void cmd_read_flash_regs()
// -------------------------------------------------------- // --------------------------------------------------------
void cmd_benchmark() uint32_t cmd_benchmark(bool verbose)
{ {
uint8_t data[256]; uint8_t data[256];
uint32_t *words = (void*)data; uint32_t *words = (void*)data;
@ -204,16 +205,56 @@ void cmd_benchmark()
__asm__ volatile ("rdcycle %0" : "=r"(cycles_end)); __asm__ volatile ("rdcycle %0" : "=r"(cycles_end));
__asm__ volatile ("rdinstret %0" : "=r"(instns_end)); __asm__ volatile ("rdinstret %0" : "=r"(instns_end));
print("Cycles: 0x"); if (verbose)
print_hex(cycles_end - cycles_begin, 8); {
print("Cycles: 0x");
print_hex(cycles_end - cycles_begin, 8);
putchar('\n');
print("Instns: 0x");
print_hex(instns_end - instns_begin, 8);
putchar('\n');
print("Chksum: 0x");
print_hex(x32, 8);
putchar('\n');
}
return cycles_end - cycles_begin;
}
// --------------------------------------------------------
void cmd_benchmark_all()
{
print("default ");
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00000000;
print(": ");
print_hex(cmd_benchmark(false), 8);
putchar('\n'); putchar('\n');
print("Instns: 0x"); print("qspi-8 ");
print_hex(instns_end - instns_begin, 8); reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00200000;
print(": ");
print_hex(cmd_benchmark(false), 8);
putchar('\n'); putchar('\n');
print("Chksum: 0x"); print("qspi-xip-8 ");
print_hex(x32, 8); reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00300000;
print(": ");
print_hex(cmd_benchmark(false), 8);
putchar('\n');
print("qspi-ddr-8 ");
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00600000;
print(": ");
print_hex(cmd_benchmark(false), 8);
putchar('\n');
print("qspi-ddr-xip-8 ");
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00700000;
print(": ");
print_hex(cmd_benchmark(false), 8);
putchar('\n'); putchar('\n');
} }
@ -222,9 +263,7 @@ void cmd_benchmark()
void main() void main()
{ {
reg_uart_clkdiv = 104; reg_uart_clkdiv = 104;
set_quad_spi_flag(); set_quad_spi_flag();
// reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00600000;
while (getchar_prompt("Press ENTER to continue..\n") != '\r') { /* wait */ } while (getchar_prompt("Press ENTER to continue..\n") != '\r') { /* wait */ }
@ -273,7 +312,8 @@ void main()
print(" [5] Switch to QSPI XIP mode\n"); print(" [5] Switch to QSPI XIP mode\n");
print(" [6] Switch to QSPI mode\n"); print(" [6] Switch to QSPI mode\n");
print(" [7] Switch to default mode\n"); print(" [7] Switch to default mode\n");
print(" [0] Run simplistic benchmark\n"); print(" [9] Run simplistic benchmark\n");
print(" [0] Benchmark all configs\n");
print("\n"); print("\n");
for (int rep = 10; rep > 0; rep--) for (int rep = 10; rep > 0; rep--)
@ -307,8 +347,11 @@ void main()
case '7': case '7':
reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00000000; reg_spictrl = (reg_spictrl & ~0x00700000) | 0x00000000;
break; break;
case '9':
cmd_benchmark(true);
break;
case '0': case '0':
cmd_benchmark(); cmd_benchmark_all();
break; break;
default: default:
continue; continue;