The basic memtest function tries to watch for ^C after each pattern pass as an escape mechanism, but if things are horribly wrong, we'll be stuck in an inner loop flooding the console with error messages and never check for ^C. To make matters worse, if the user waits for all the error messages to complete, we then incorrectly report the test passed without errors.
Adding a check for ^C after any error is printed will give the end user an escape mechanism from a console flood without slowing down the overall test speed on a slow processor.
Also, the more extensive memtest quit after just a single error, which is inconsistent with the normal memtest, and not useful if if you are doing dynamic environmental impact testing, such as heating/cooling etc.
Both tests now track the error count and report it properly at test completion.
Signed-off-by: Paul Gortmaker paul.gortmaker@windriver.com ---
Changes: fixed return values since prev. version.
common/cmd_mem.c | 58 ++++++++++++++++++++++++++++++++++++++++------------- 1 files changed, 44 insertions(+), 14 deletions(-)
diff --git a/common/cmd_mem.c b/common/cmd_mem.c index 9850800..a34b342 100644 --- a/common/cmd_mem.c +++ b/common/cmd_mem.c @@ -631,7 +631,7 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) vu_long *addr, *start, *end; ulong val; ulong readback; - int rcode = 0; + ulong errs = 0; int iterations = 1; int iteration_limit;
@@ -698,9 +698,9 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
if (iteration_limit && iterations > iteration_limit) { - printf("Tested %d iteration(s) without errors.\n", - iterations-1); - return 0; + printf("Tested %d iteration(s) with %lu errors.\n", + iterations-1, errs); + return errs != 0; }
printf("Iteration: %6d\r", iterations); @@ -732,9 +732,14 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) *dummy = ~val; /* clear the test data off of the bus */ readback = *addr; if(readback != val) { - printf ("FAILURE (data line): " + printf ("FAILURE (data line): " "expected %08lx, actual %08lx\n", val, readback); + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } } *addr = ~val; *dummy = val; @@ -743,6 +748,11 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("FAILURE (data line): " "Is %08lx, should be %08lx\n", readback, ~val); + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } } } } @@ -808,7 +818,11 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("\nFAILURE: Address bit stuck high @ 0x%.8lx:" " expected 0x%.8lx, actual 0x%.8lx\n", (ulong)&start[offset], pattern, temp); - return 1; + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } } } start[test_offset] = pattern; @@ -826,7 +840,11 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("\nFAILURE: Address bit stuck low or shorted @" " 0x%.8lx: expected 0x%.8lx, actual 0x%.8lx\n", (ulong)&start[offset], pattern, temp); - return 1; + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } } } start[test_offset] = pattern; @@ -864,7 +882,11 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("\nFAILURE (read/write) @ 0x%.8lx:" " expected 0x%.8lx, actual 0x%.8lx)\n", (ulong)&start[offset], pattern, temp); - return 1; + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } }
anti_pattern = ~pattern; @@ -882,7 +904,11 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("\nFAILURE (read/write): @ 0x%.8lx:" " expected 0x%.8lx, actual 0x%.8lx)\n", (ulong)&start[offset], anti_pattern, temp); - return 1; + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } } start[offset] = 0; } @@ -897,9 +923,9 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) }
if (iteration_limit && iterations > iteration_limit) { - printf("Tested %d iteration(s) without errors.\n", - iterations-1); - return 0; + printf("Tested %d iteration(s) with %lu errors.\n", + iterations-1, errs); + return errs != 0; } ++iterations;
@@ -923,7 +949,11 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) printf ("\nMem error @ 0x%08X: " "found %08lX, expected %08lX\n", (uint)addr, readback, val); - rcode = 1; + errs++; + if (ctrlc()) { + putc ('\n'); + return 1; + } } val += incr; } @@ -943,7 +973,7 @@ int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) incr = -incr; } #endif - return rcode; + return 0; /* not reached */ }