software: Review/Cleanup #998.

- Fix compilation in sdram.c.
- Fix warnings.
- Move Sequential/Random mode printf to memtest.
- Reduce SPI Flash test size (Testing full SPI Flash makes the boot too long, especially in random mode).

litex/soc/software/bios/cmds/cmd_mem.c

@@ -202,10 +202,10 @@ static void mem_speed_handler(int nb_params, char **params)
 	unsigned int *addr;
 	unsigned long size;
 	bool read_only = false;
-	bool random_access = false;
+	bool random = false;
 
 	if (nb_params < 1) {
-		printf("mem_speed <addr> <size> [<readonly>] [<random_access>]");
+		printf("mem_speed <addr> <size> [<readonly>] [<random>]");
 		return;
 	}
 
@@ -230,13 +230,13 @@ static void mem_speed_handler(int nb_params, char **params)
 	}
 
 	if (nb_params >= 4) {
-		random_access = (bool) strtoul(params[3], &c, 0);
+		random = (bool) strtoul(params[3], &c, 0);
 		if (*c != 0) {
-			printf("Incorrect random_access value");
+			printf("Incorrect random value");
 			return;
 		}
 	}
 
-	memspeed(addr, size, read_only, random_access);
+	memspeed(addr, size, read_only, random);
 }
 define_command(mem_speed, mem_speed_handler, "Test memory speed", MEM_CMDS);

litex/soc/software/include/base/memtest.h

@@ -20,7 +20,7 @@ int memtest_bus(unsigned int *addr, unsigned long size);
 int memtest_addr(unsigned int *addr, unsigned long size, int random);
 int memtest_data(unsigned int *addr, unsigned long size, int random, struct memtest_config *config);
 
-void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool random_access);
+void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool random);
 int memtest(unsigned int *addr, unsigned long maxsize);
 
 #endif /* __MEMTEST_H */

litex/soc/software/libbase/memtest.c

@@ -252,11 +252,11 @@ int memtest_data(unsigned int *addr, unsigned long size, int random, struct memt
 	return errors;
 }
 
-void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool random_access)
+void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool random)
 {
 	volatile unsigned long *array = (unsigned long *)addr;
 	int i;
-	unsigned int seed_32;
+	unsigned int seed_32 = 0;
 	uint32_t start, end;
 	unsigned long write_speed = 0;
 	unsigned long read_speed;
@@ -264,6 +264,10 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool rando
 	const unsigned int sz = sizeof(unsigned long);
 
 	printf("Memspeed at %p (", addr);
+	if (random)
+		printf("Random, ");
+	else
+		printf("Sequential, ");
 	print_size(size);
 	printf(")...\n");
 
@@ -301,7 +305,7 @@ void memspeed(unsigned int *addr, unsigned long size, bool read_only, bool rando
 
 	int num = size/sz;
 
-	if (random_access) {
+	if (random) {
 		for (i = 0; i < size/sz; i++) {
 			seed_32 = seed_to_data_32(seed_32, i);
 			data = array[seed_32 % num];

litex/soc/software/liblitedram/sdram.c

@@ -1254,7 +1254,7 @@ int sdram_init(void)
 #endif
 		return 0;
 	}
-	memspeed((unsigned int *) MAIN_RAM_BASE, MEMTEST_DATA_SIZE, false);
+	memspeed((unsigned int *) MAIN_RAM_BASE, MEMTEST_DATA_SIZE, false, 0);
 #endif
 #ifdef CSR_DDRCTRL_BASE
 	ddrctrl_init_done_write(1);

litex/soc/software/liblitespi/spiflash.c

@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <crc.h>
+#include <memtest.h>
 
 #include <generated/csr.h>
 #include <generated/mem.h>
@@ -84,7 +85,7 @@ static void spiflash_master_write(uint32_t val, size_t len, size_t width, uint32
 
 void spiflash_init(void)
 {
-	printf("Initializing %s SPI Flash...\n", SPIFLASH_MODULE_NAME);
+	printf("\nInitializing %s SPI Flash @0x%08lx...\n", SPIFLASH_MODULE_NAME, SPIFLASH_BASE);
 
 #ifdef SPIFLASH_MODULE_DUMMY_BITS
 	spiflash_dummy_bits_setup(SPIFLASH_MODULE_DUMMY_BITS);
@@ -107,18 +108,15 @@ void spiflash_init(void)
 
 #endif
 
-	/* Clk frequency auto-calibration. */
 #ifndef SPIFLASH_SKIP_FREQ_INIT
 	/* Clk frequency auto-calibration. */
 	spiflash_freq_init();
-	printf("Warning: SPI Flash frequency auto-calibration skipped, using the default divisor of %d", spiflash_phy_clk_divisor_read());
+#else
+	printf("Warning: SPI Flash frequency auto-calibration skipped, using the default divisor of %d\n", spiflash_phy_clk_divisor_read());
 #endif
 
-	printf("SPI Flash bandwidth benchmarks\n");
-	printf("Sequential accesses:");
-	memspeed(SPIFLASH_BASE, SPIFLASH_SIZE, 1, 0);
-	printf("Random accesses:");
-	memspeed(SPIFLASH_BASE, SPIFLASH_SIZE, 1, 1);
+	memspeed((unsigned int *) SPIFLASH_BASE, SPIFLASH_SIZE/16, 1, 0);
+	memspeed((unsigned int *) SPIFLASH_BASE, SPIFLASH_SIZE/16, 1, 1);
 }
 
 #endif