post/drivers/memory.c

32  *   pattern to the target location, write a different pattern elsewhere
70  * After writing a test pattern. a special pattern 0x0123456789ABCDEF is
73  * pattern in that byte lane when the test runs.  For example, if the
75  * (for the 'a' test pattern).
91  * test pattern we use is a ulong and thus, if we tried to test lower
92  * order address bits, it wouldn't work because our pattern would
117  * verify RAM. Each test case fills a region of RAM with one pattern and
118  * then reads the region back and compares its contents with the pattern.
121  *  1a) zero pattern (0x00000000)
122  *  1b) negative pattern (0xffffffff)
123  *  1c) checkerboard pattern (0x55555555)
124  *  1d) checkerboard pattern (0xaaaaaaaa)
125  *  2)  bit-flip pattern ((1 << (offset % 32))
126  *  3)  address pattern (offset)
127  *  4)  address pattern (~offset)
182  * than the test pattern.  This is for detecting floating bus lines.
185 const static unsigned long long pattern[] = {  variable
205 	int num_patterns = ARRAY_SIZE(pattern);  in memory_post_dataline()
211 		move64(&(pattern[i]), pmem++);  in memory_post_dataline()
213 		 * Put a different pattern on the data lines: otherwise they  in memory_post_dataline()
223 		if (temp64 != pattern[i]){  in memory_post_dataline()
224 			pathi = (pattern[i]>>32) & 0xffffffff;  in memory_post_dataline()
225 			patlo = pattern[i] & 0xffffffff;  in memory_post_dataline()