[Cryptech-Commits] [sw/stm32] 04/04: add new test cases, add gettimeofday

[git at cryptech.is]

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paul at psgd.org pushed a commit to branch master
in repository sw/stm32.

commit 085e7317b3749c9f2a6339366a0b964b72b71973
Author: Paul Selkirk <paul at psgd.org>
Date:   Sat Oct 31 23:05:05 2015 -0400

    add new test cases, add gettimeofday
---
 Makefile             |   9 +++--
 libc/gettimeofday.c  |  26 ++++++++++++
 main.c               |  12 +++---
 self-test/fmc-perf.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++
 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;
+}