diff options
Diffstat (limited to 'fpga/interface/beaglebone_black/gpmc/test/bbb-gpmc-test.c')
| -rw-r--r-- | fpga/interface/beaglebone_black/gpmc/test/bbb-gpmc-test.c | 127 |
1 files changed, 122 insertions, 5 deletions
diff --git a/fpga/interface/beaglebone_black/gpmc/test/bbb-gpmc-test.c b/fpga/interface/beaglebone_black/gpmc/test/bbb-gpmc-test.c index 9b17634..2c5dc99 100644 --- a/fpga/interface/beaglebone_black/gpmc/test/bbb-gpmc-test.c +++ b/fpga/interface/beaglebone_black/gpmc/test/bbb-gpmc-test.c @@ -34,7 +34,7 @@ #include <sys/mman.h> #include <fcntl.h> -#define MEMORY_SPACE_ADDRESS_BITS 15 +#define MEMORY_SPACE_ADDRESS_BITS 16 #define GPMC_BASE 0x50000000 #define GPMC_REGLEN 0x10000000 @@ -119,11 +119,17 @@ static void gpmc_setup(void) // *(gpmc + displacement + GPMC_CONFIG4) = 0x06020802; // Assert WE on fclk2, deassert WE on fclk6, assert OE on fclk2, deassert OE on fclk8 // *(gpmc + displacement + GPMC_CONFIG5) = 0x00060808; // Data valid on fclk 6, cycle time 8 fclks - // 100MHz compatible SRAM device - *(gpmc + displacement + GPMC_CONFIG2) = 0x00001000; // Assert CS on fclk0, deassert CS on fclk16 +// // 100MHz compatible SRAM device +// *(gpmc + displacement + GPMC_CONFIG2) = 0x00001000; // Assert CS on fclk0, deassert CS on fclk16 +// *(gpmc + displacement + GPMC_CONFIG3) = 0x00000400; // Assert ADV on fclk 0, deassert ADV on fclk 4 +// *(gpmc + displacement + GPMC_CONFIG4) = 0x0c041004; // Assert WE on fclk4, deassert WE on fclk12, assert OE on fclk4, deassert OE on fclk16 +// *(gpmc + displacement + GPMC_CONFIG5) = 0x000c1010; // Data valid on fclk 12, cycle time 16 fclks + + // 50MHz compatible SRAM device + *(gpmc + displacement + GPMC_CONFIG2) = 0x00001f00; // Assert CS on fclk0, deassert CS on fclk31 *(gpmc + displacement + GPMC_CONFIG3) = 0x00000400; // Assert ADV on fclk 0, deassert ADV on fclk 4 - *(gpmc + displacement + GPMC_CONFIG4) = 0x0c041004; // Assert WE on fclk4, deassert WE on fclk12, assert OE on fclk4, deassert OE on fclk16 - *(gpmc + displacement + GPMC_CONFIG5) = 0x000c1010; // Data valid on fclk 12, cycle time 16 fclks + *(gpmc + displacement + GPMC_CONFIG4) = 0x1f041f04; // Assert WE on fclk4, deassert WE on fclk31, assert OE on fclk4, deassert OE on fclk31 + *(gpmc + displacement + GPMC_CONFIG5) = 0x00101f1f; // Data valid on fclk 16, cycle time 31 fclks *(gpmc + displacement + GPMC_CONFIG6) = 0x00000000; // No back to back cycle restrictions *(gpmc + displacement + GPMC_CONFIG7) = 0x00000e50; // CS0: Set base address 0x10000000, 32MB region, and enable CS @@ -180,6 +186,117 @@ static void io_setup(void) // for (j=0;j<0x3ff; j++) { // *(gpio + j) = j; // } + + // DEBUG ONLY + // Looping memory test + unsigned int test_base = (MEMORY_SIZE/2); + unsigned int test_length = (MEMORY_SIZE/2); + unsigned int total_errors; + unsigned char error_count[MEMORY_SIZE]; + int i; + int loop; + unsigned int overall_total_errors; + overall_total_errors = 0; + for (loop=0; loop<10;loop++) { + printf("Memory test loop %d\n", loop); + for (i=0; i<test_length; i++) { + error_count[i] = 0; + } + printf("\tTesting inversion pattern\n"); + // Test with 0xaa + for (i=0;i<test_length; i++) { + *(gpio_char + test_base + i) = 0xaa; + } + for (i=0;i<test_length; i++) { + unsigned char result = *(gpio_char + test_base + i); + if ((result != 0xaa)) { + error_count[i] = error_count[i] + 1; + printf("\terror detected at offset 0x%02x (was 0x%02x, expected 0x%02x, second read attempt returned 0x%02x)\n", i, result, 0xaa, (*(gpio_char + test_base + i))); + } + } + // Test with 0x55 + for (i=0;i<test_length; i++) { + *(gpio_char + test_base + i) = 0x55; + } + for (i=0;i<test_length; i++) { + unsigned char result = *(gpio_char + test_base + i); + if ((result != 0x55)) { + error_count[i] = error_count[i] + 1; + printf("\terror detected at offset 0x%02x (was 0x%02x, expected 0x%02x, second read attempt returned 0x%02x)\n", i, result, 0x55, (*(gpio_char + test_base + i))); + } + } + total_errors = 0; + for (i=0; i<test_length; i++) { + total_errors = total_errors + error_count[i]; + if (error_count[i] > 0) { + printf("\t%d\terror(s) found at offset 0x%02x\n", error_count[i], i); + } + } + + printf("\tTesting all ones/zeros\n"); + // Test with 0xff + for (i=0;i<test_length; i++) { + *(gpio_char + test_base + i) = 0xff; + } + for (i=0;i<test_length; i++) { + unsigned char result = *(gpio_char + test_base + i); + if ((result != 0xff)) { + error_count[i] = error_count[i] + 1; + printf("\terror detected at offset 0x%02x (was 0x%02x, expected 0x%02x, second read attempt returned 0x%02x)\n", i, result, 0xff, (*(gpio_char + test_base + i))); + } + } + // Test with 0x00 + for (i=0;i<test_length; i++) { + *(gpio_char + test_base + i) = 0x00; + } + for (i=0;i<test_length; i++) { + unsigned char result = *(gpio_char + test_base + i); + if ((result != 0x00)) { + error_count[i] = error_count[i] + 1; + printf("\terror detected at offset 0x%02x (was 0x%02x, expected 0x%02x, second read attempt returned 0x%02x)\n", i, result, 0x00, (*(gpio_char + test_base + i))); + } + } + + printf("\tTesting alternating ones/zeros\n"); + // Test with 0xff + for (i=0;i<test_length; i=i+2) { + *(gpio_char + test_base + i) = 0xff; + *(gpio_char + test_base + i + 1) = 0x00; + } + for (i=0;i<test_length; i=i+2) { + unsigned char result; + result = *(gpio_char + test_base + i); + if ((result != 0xff)) { + error_count[i] = error_count[i] + 1; + printf("\terror detected at offset 0x%02x (was 0x%02x, expected 0x%02x, second read attempt returned 0x%02x)\n", i, result, 0xff, (*(gpio_char + test_base + i))); + } + result = *(gpio_char + test_base + i + 1); + if ((result != 0x00)) { + error_count[i] = error_count[i] + 1; + printf("\terror detected at offset 0x%02x (was 0x%02x, expected 0x%02x, second read attempt returned 0x%02x)\n", i, result, 0x00, (*(gpio_char + test_base + i))); + } + } + + total_errors = 0; + for (i=0; i<test_length; i++) { + total_errors = total_errors + error_count[i]; + if (error_count[i] > 0) { + printf("\t%d\terror(s) found at offset 0x%02x\n", error_count[i], i); + } + } + printf("\tTest region size:\t%d\n", test_length); + printf("\tTotal errors found:\t%d\n", total_errors); + fflush(stdout); + overall_total_errors = overall_total_errors + total_errors; + } + for (i=0;i<MEMORY_SIZE; i++) { + *(gpio_char + i) = 0; + } + printf("Total errors found over all loops:\t%d\n", overall_total_errors); + fflush(stdout); + return; + + int j; for (j=0;j<MEMORY_SIZE; j++) { *(gpio_char + j) = ((unsigned char)j); |