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-rw-r--r--Makefile9
-rw-r--r--libc/gettimeofday.c26
-rw-r--r--main.c12
-rw-r--r--self-test/fmc-perf.c110
4 files changed, 147 insertions, 10 deletions
diff --git a/Makefile b/Makefile
index 42acc00..e05586c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
-SELF-TESTS = fmc-test led-test short-test uart-test fmc-probe
+SELF-TESTS = fmc-test led-test short-test uart-test fmc-perf
-LIBHAL-TESTS = test-hash test-aes-key-wrap test-pbkdf2 #test-ecdsa test-rsa
+LIBHAL-TESTS = cores test-bus test-hash test-aes-key-wrap test-pbkdf2 test-ecdsa #test-rsa
# put your *.o targets here, make should handle the rest!
SRCS = stm32f4xx_hal_msp.c stm32f4xx_it.c stm-fmc.c stm-init.c stm-uart.c
@@ -99,8 +99,8 @@ CFLAGS += -I libhal
%.mo: %.c
$(CC) -c $(CFLAGS) -Dmain=__main -o $@ $<
-vpath %.c libc
-%.bin: %.mo main.o syscalls.o printf.o $(OBJS) $(LIBS)
+vpath %.c libc libhal/utils
+%.bin: %.mo main.o syscalls.o printf.o gettimeofday.o $(OBJS) $(LIBS)
$(CC) $(CFLAGS) $^ -o $*.elf -L$(LDSCRIPT_INC) -T$(MCU_LINKSCRIPT) -g -Wl,-Map=$*.map
$(OBJCOPY) -O ihex $*.elf $*.hex
$(OBJCOPY) -O binary $*.elf $*.bin
@@ -122,3 +122,4 @@ distclean: clean
$(MAKE) -C $(STD_PERIPH_LIB) clean
$(MAKE) -C thirdparty/libtfm clean
$(MAKE) -C libhal clean
+
diff --git a/libc/gettimeofday.c b/libc/gettimeofday.c
new file mode 100644
index 0000000..b0561c3
--- /dev/null
+++ b/libc/gettimeofday.c
@@ -0,0 +1,26 @@
+#include <stdint.h>
+
+#include "stm32f4xx_hal.h"
+
+/* Don't #include <sys/time.h> because of conflicting prototype in newlib. */
+
+/* from the manpage: */
+struct timeval {
+ time_t tv_sec; /* seconds */
+ suseconds_t tv_usec; /* microseconds */
+};
+
+struct timezone {
+ int tz_minuteswest; /* minutes west of Greenwich */
+ int tz_dsttime; /* type of DST correction */
+};
+
+int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+ uint32_t tick = HAL_GetTick(); /* uptime in ms */
+
+ tv->tv_sec = tick / 1000;
+ tv->tv_usec = (tick % 1000) * 1000;
+
+ return 0;
+}
diff --git a/main.c b/main.c
index feec344..2572927 100644
--- a/main.c
+++ b/main.c
@@ -3,15 +3,15 @@
*/
#include "stm-init.h"
+#include "stm-fmc.h"
#include "stm-uart.h"
+extern void __main(void);
+
void main(void)
{
- stm_init();
- fmc_init();
- while(1) {
+ stm_init();
+ fmc_init();
__main();
- uart_send_string("\r\n");
- HAL_Delay(2000);
- }
+ uart_send_string("Done.\r\n\r\n");
}
diff --git a/self-test/fmc-perf.c b/self-test/fmc-perf.c
new file mode 100644
index 0000000..f0185a0
--- /dev/null
+++ b/self-test/fmc-perf.c
@@ -0,0 +1,110 @@
+/*
+ * Test read/write performance of the fmc bus
+ */
+#include "stm32f4xx_hal.h"
+#include "stm-init.h"
+#include "stm-fmc.h"
+#include "stm-uart.h"
+
+#define TEST_NUM_ROUNDS 2000000
+
+RNG_HandleTypeDef rng_inst;
+
+static void MX_RNG_Init(void)
+{
+ rng_inst.Instance = RNG;
+ HAL_RNG_Init(&rng_inst);
+}
+
+static uint32_t random(void)
+{
+ uint32_t rnd;
+ if (HAL_RNG_GenerateRandomNumber(&rng_inst, &rnd) != HAL_OK) {
+ uart_send_string("HAL_RNG_GenerateRandomNumber failed\r\n");
+ Error_Handler();
+ }
+ return rnd;
+}
+
+static void sanity(void)
+{
+ uint32_t rnd, data;
+
+ rnd = random();
+ if (fmc_write_32(0, &rnd) != 0) {
+ uart_send_string("fmc_write_32 failed\r\n");
+ Error_Handler();
+ }
+ if (fmc_read_32(0, &data) != 0) {
+ uart_send_string("fmc_read_32 failed\r\n");
+ Error_Handler();
+ }
+ if (data != rnd) {
+ uart_send_string("Data bus fail: expected ");
+ uart_send_hex(rnd, 8);
+ uart_send_string(", got ");
+ uart_send_hex(data, 8);
+ uart_send_string(", diff ");
+ uart_send_hex(data ^ rnd, 8);
+ uart_send_string("\r\n");
+ Error_Handler();
+ }
+}
+
+static void _time_check(char *label, const uint32_t t0)
+{
+ uint32_t t = HAL_GetTick() - t0;
+
+ uart_send_string(label);
+ uart_send_integer(t / 1000, 0);
+ uart_send_char('.');
+ uart_send_integer(t % 1000, 999);
+ uart_send_string(" seconds, ");
+ uart_send_integer((1000 * TEST_NUM_ROUNDS) / t, 0);
+ uart_send_string("/sec\r\n");
+}
+
+#define time_check(_label_, _expr_) \
+ do { \
+ uint32_t _t = HAL_GetTick(); \
+ (_expr_); \
+ _time_check(_label_, _t); \
+ } while (0)
+
+static void test_read(void)
+{
+ uint32_t i, data;
+
+ for (i = 0; i < TEST_NUM_ROUNDS; ++i) {
+ if (fmc_read_32(0, &data) != 0) {
+ uart_send_string("fmc_read_32 failed\r\n");
+ Error_Handler();
+ }
+ }
+}
+
+static void test_write(void)
+{
+ uint32_t i;
+
+ for (i = 0; i < TEST_NUM_ROUNDS; ++i) {
+ if (fmc_write_32(0, &i) != 0) {
+ uart_send_string("fmc_write_32 failed\r\n");
+ Error_Handler();
+ }
+ }
+}
+
+int main(void)
+{
+ stm_init();
+ MX_RNG_Init();
+ fmc_init();
+
+ sanity();
+
+ time_check("read ", test_read());
+ time_check("write ", test_write());
+
+ return 0;
+}