[U-Boot] [PATCH 06/20] Split out the memory tests into separate functions
Simon Glass
sjg at chromium.org
Wed Dec 26 19:56:59 CET 2012
Half of the code is currently hidden behind an #ifdef. Move the two
memory tests into their own functions and use the compiler to eliminate
the unused code.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
common/cmd_mem.c | 217 +++++++++++++++++++++++++++++-------------------------
1 files changed, 116 insertions(+), 101 deletions(-)
diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index e2adea9..36ac6f4 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -621,36 +621,26 @@ int do_mem_loopw (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
}
#endif /* CONFIG_LOOPW */
-/*
- * Perform a memory test. A more complete alternative test can be
- * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until
- * interrupted by ctrl-c or by a failure of one of the sub-tests.
- */
-static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
- char * const argv[])
+static int mem_test_alt(vu_long *start, vu_long *end,
+ int iteration_limit)
{
- vu_long *addr, *start, *end;
- ulong val;
- ulong readback;
- ulong errs = 0;
+ vu_long *addr;
int iterations = 1;
- int iteration_limit;
-
-#if defined(CONFIG_SYS_ALT_MEMTEST)
- vu_long len;
- vu_long offset;
- vu_long test_offset;
- vu_long pattern;
- vu_long temp;
- vu_long anti_pattern;
- vu_long num_words;
+ ulong errs = 0;
+ ulong val, readback;
+ int j;
+ vu_long len;
+ vu_long offset;
+ vu_long test_offset;
+ vu_long pattern;
+ vu_long temp;
+ vu_long anti_pattern;
+ vu_long num_words;
#if defined(CONFIG_SYS_MEMTEST_SCRATCH)
- vu_long *dummy = (vu_long*)CONFIG_SYS_MEMTEST_SCRATCH;
+ vu_long *dummy = (vu_long *)CONFIG_SYS_MEMTEST_SCRATCH;
#else
vu_long *dummy = NULL; /* yes, this is address 0x0, not NULL */
#endif
- int j;
-
static const ulong bitpattern[] = {
0x00000001, /* single bit */
0x00000003, /* two adjacent bits */
@@ -661,43 +651,18 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
0x00000055, /* four non-adjacent bits */
0xaaaaaaaa, /* alternating 1/0 */
};
-#else
- ulong incr;
- ulong pattern;
-#endif
- if (argc > 1)
- start = (ulong *)simple_strtoul(argv[1], NULL, 16);
- else
- start = (ulong *)CONFIG_SYS_MEMTEST_START;
-
- if (argc > 2)
- end = (ulong *)simple_strtoul(argv[2], NULL, 16);
- else
- end = (ulong *)(CONFIG_SYS_MEMTEST_END);
-
- if (argc > 3)
- pattern = (ulong)simple_strtoul(argv[3], NULL, 16);
- else
- pattern = 0;
-
- if (argc > 4)
- iteration_limit = (ulong)simple_strtoul(argv[4], NULL, 16);
- else
- iteration_limit = 0;
-
-#if defined(CONFIG_SYS_ALT_MEMTEST)
- printf ("Testing %08x ... %08x:\n", (uint)start, (uint)end);
+ printf("Testing %08x ... %08x:\n", (uint)(uintptr_t)start,
+ (uint)(uintptr_t)end);
debug("%s:%d: start 0x%p end 0x%p\n",
- __FUNCTION__, __LINE__, start, end);
+ __func__, __LINE__, start, end);
for (;;) {
if (ctrlc()) {
- putc ('\n');
+ putc('\n');
return 1;
}
-
if (iteration_limit && iterations > iteration_limit) {
printf("Tested %d iteration(s) with %lu errors.\n",
iterations-1, errs);
@@ -726,34 +691,35 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
* pattern and ~pattern).
*/
addr = start;
- for (j = 0; j < sizeof(bitpattern)/sizeof(bitpattern[0]); j++) {
+ for (j = 0; j < sizeof(bitpattern) / sizeof(bitpattern[0]);
+ j++) {
val = bitpattern[j];
- for(; val != 0; val <<= 1) {
+ for (; val != 0; val <<= 1) {
*addr = val;
- *dummy = ~val; /* clear the test data off of the bus */
+ *dummy = ~val; /* clear the test data off the bus */
readback = *addr;
if(readback != val) {
- printf ("FAILURE (data line): "
- "expected %08lx, actual %08lx\n",
- val, readback);
- errs++;
- if (ctrlc()) {
- putc ('\n');
- return 1;
- }
+ printf("FAILURE (data line): "
+ "expected %08lx, actual %08lx\n",
+ val, readback);
+ errs++;
+ if (ctrlc()) {
+ putc('\n');
+ return 1;
+ }
}
*addr = ~val;
*dummy = val;
readback = *addr;
- if(readback != ~val) {
- printf ("FAILURE (data line): "
- "Is %08lx, should be %08lx\n",
- readback, ~val);
- errs++;
- if (ctrlc()) {
- putc ('\n');
- return 1;
- }
+ if (readback != ~val) {
+ printf("FAILURE (data line): "
+ "Is %08lx, should be %08lx\n",
+ readback, ~val);
+ errs++;
+ if (ctrlc()) {
+ putc('\n');
+ return 1;
+ }
}
}
}
@@ -797,15 +763,13 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
anti_pattern = (vu_long) 0x55555555;
debug("%s:%d: length = 0x%.8lx\n",
- __FUNCTION__, __LINE__,
- len);
+ __func__, __LINE__, len);
/*
* Write the default pattern at each of the
* power-of-two offsets.
*/
- for (offset = 1; offset < len; offset <<= 1) {
+ for (offset = 1; offset < len; offset <<= 1)
start[offset] = pattern;
- }
/*
* Check for address bits stuck high.
@@ -816,12 +780,12 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
for (offset = 1; offset < len; offset <<= 1) {
temp = start[offset];
if (temp != pattern) {
- printf ("\nFAILURE: Address bit stuck high @ 0x%.8lx:"
+ printf("\nFAILURE: Address bit stuck high @ 0x%.8lx:"
" expected 0x%.8lx, actual 0x%.8lx\n",
(ulong)&start[offset], pattern, temp);
errs++;
if (ctrlc()) {
- putc ('\n');
+ putc('\n');
return 1;
}
}
@@ -838,12 +802,12 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
for (offset = 1; offset < len; offset <<= 1) {
temp = start[offset];
if ((temp != pattern) && (offset != test_offset)) {
- printf ("\nFAILURE: Address bit stuck low or shorted @"
+ printf("\nFAILURE: Address bit stuck low or shorted @"
" 0x%.8lx: expected 0x%.8lx, actual 0x%.8lx\n",
(ulong)&start[offset], pattern, temp);
errs++;
if (ctrlc()) {
- putc ('\n');
+ putc('\n');
return 1;
}
}
@@ -880,13 +844,13 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
WATCHDOG_RESET();
temp = start[offset];
if (temp != pattern) {
- printf ("\nFAILURE (read/write) @ 0x%.8lx:"
+ printf("\nFAILURE (read/write) @ 0x%.8lx:"
" expected 0x%.8lx, actual 0x%.8lx)\n",
(ulong)&start[offset], pattern, temp);
errs++;
if (ctrlc()) {
- putc ('\n');
- return 1;
+ putc('\n');
+ return 1;
}
}
@@ -902,24 +866,33 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
anti_pattern = ~pattern;
temp = start[offset];
if (temp != anti_pattern) {
- printf ("\nFAILURE (read/write): @ 0x%.8lx:"
+ printf("\nFAILURE (read/write): @ 0x%.8lx:"
" expected 0x%.8lx, actual 0x%.8lx)\n",
(ulong)&start[offset], anti_pattern, temp);
errs++;
if (ctrlc()) {
- putc ('\n');
- return 1;
+ putc('\n');
+ return 1;
}
}
start[offset] = 0;
}
}
+}
+
+static int mem_test_quick(vu_long *start, vu_long *end,
+ int iteration_limit, vu_long pattern)
+{
+ vu_long *addr;
+ int iterations = 1;
+ ulong errs = 0;
+ ulong incr;
+ ulong val, readback;
-#else /* The original, quickie test */
incr = 1;
for (;;) {
if (ctrlc()) {
- putc ('\n');
+ putc('\n');
return 1;
}
@@ -930,29 +903,29 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
}
++iterations;
- printf ("\rPattern %08lX Writing..."
+ printf("\rPattern %08lX Writing..."
"%12s"
"\b\b\b\b\b\b\b\b\b\b",
pattern, "");
- for (addr=start,val=pattern; addr<end; addr++) {
+ for (addr = start, val = pattern; addr < end; addr++) {
WATCHDOG_RESET();
*addr = val;
- val += incr;
+ val += incr;
}
- puts ("Reading...");
+ puts("Reading...");
- for (addr=start,val=pattern; addr<end; addr++) {
+ for (addr = start, val = pattern; addr < end; addr++) {
WATCHDOG_RESET();
readback = *addr;
if (readback != val) {
- printf ("\nMem error @ 0x%08X: "
+ printf("\nMem error @ 0x%08X: "
"found %08lX, expected %08lX\n",
(uint)(uintptr_t)addr, readback, val);
errs++;
if (ctrlc()) {
- putc ('\n');
+ putc('\n');
return 1;
}
}
@@ -965,16 +938,58 @@ static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
* the "negative" patterns and increment the "positive"
* patterns to preserve this feature.
*/
- if(pattern & 0x80000000) {
+ if (pattern & 0x80000000)
pattern = -pattern; /* complement & increment */
- }
- else {
+ else
pattern = ~pattern;
- }
incr = -incr;
}
+}
+
+/*
+ * Perform a memory test. A more complete alternative test can be
+ * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until
+ * interrupted by ctrl-c or by a failure of one of the sub-tests.
+ */
+static int do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ vu_long *start, *end;
+ int iteration_limit;
+ int ret;
+ ulong pattern;
+#if defined(CONFIG_SYS_ALT_MEMTEST)
+ const int alt_test = 1;
+#else
+ const int alt_test = 0;
#endif
- return 0; /* not reached */
+
+ if (argc > 1)
+ start = (ulong *)simple_strtoul(argv[1], NULL, 16);
+ else
+ start = (ulong *)CONFIG_SYS_MEMTEST_START;
+
+ if (argc > 2)
+ end = (ulong *)simple_strtoul(argv[2], NULL, 16);
+ else
+ end = (ulong *)(CONFIG_SYS_MEMTEST_END);
+
+ if (argc > 3)
+ pattern = (ulong)simple_strtoul(argv[3], NULL, 16);
+ else
+ pattern = 0;
+
+ if (argc > 4)
+ iteration_limit = (ulong)simple_strtoul(argv[4], NULL, 16);
+ else
+ iteration_limit = 0;
+
+ if (alt_test)
+ ret = mem_test_alt(start, end, iteration_limit);
+ else
+ ret = mem_test_quick(start, end, iteration_limit, pattern);
+
+ return ret; /* not reached */
}
--
1.7.7.3
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