1 // SPDX-License-Identifier: GPL-2.0+
44  * ---------------
77  * ------------------
79  *  hooked up to the RAM work properly.  If there is an address line
89  * In the actual code, we start with address sizeof(ulong) since our
95  *   0000 <- base
96  *   0001 <- test 1
97  *   0010 <- test 2
98  *   0100 <- test 3
99  *   1000 <- test 4
101  *   0010 <- base
102  *   0011 <- test 1
103  *   0000 <- (below the base address, skipped)
104  *   0110 <- test 2
105  *   1010 <- test 3
112  * Memory tests 1-4:
113  * -----------------
114  * These tests verify RAM using sequential writes and reads
115  * to/from RAM. There are several test cases that use different patterns to
116  * verify RAM. Each test case fills a region of RAM with one pattern and
124  *  2)  bit-flip pattern ((1 << (offset % 32))
129  * regions of RAM around each 1Mb boundary. For example, for 64Mb
130  * RAM the following areas are verified: 0x00000000-0x00000800,
131  * 0x000ff800-0x00100800, 0x001ff800-0x00200800, ..., 0x03fff800-
132  * 0x04000000. If the test is run in slow-test mode, it verifies
133  * the whole RAM.
168  * For other processors, let the compiler generate the best code it can.
170 static void move64(const unsigned long long *src, unsigned long long *dest)  in move64()
177  * (which presumably works) and the tests write them to RAM which may
184 const static unsigned long long pattern[] = {
198 const unsigned long long otherpattern = 0x0123456789abcdefULL;
201 static int memory_post_dataline(unsigned long long * pmem)  in memory_post_dataline()
203 	unsigned long long temp64 = 0;  in memory_post_dataline()
213 		 * may float long enough to read back what we wrote.  in memory_post_dataline()
215 		move64(&otherpattern, pmem--);  in memory_post_dataline()
232 			ret = -1;  in memory_post_dataline()
260 				post_log("Memory (address line) error at %08x<->%08x, "  in memory_post_addrline()
263 				ret = -1;  in memory_post_addrline()
270 static int memory_post_test1(unsigned long start,  in memory_post_test1()
271 			      unsigned long size,  in memory_post_test1()
272 			      unsigned long val)  in memory_post_test1()
274 	unsigned long i;  in memory_post_test1()
292 			ret = -1;  in memory_post_test1()
302 static int memory_post_test2(unsigned long start, unsigned long size)  in memory_post_test2()
304 	unsigned long i;  in memory_post_test2()
322 			ret = -1;  in memory_post_test2()
332 static int memory_post_test3(unsigned long start, unsigned long size)  in memory_post_test3()
334 	unsigned long i;  in memory_post_test3()
352 			ret = -1;  in memory_post_test3()
362 static int memory_post_test4(unsigned long start, unsigned long size)  in memory_post_test4()
364 	unsigned long i;  in memory_post_test4()
382 			ret = -1;  in memory_post_test4()
392 static int memory_post_test_lines(unsigned long start, unsigned long size)  in memory_post_test_lines()
396 	ret = memory_post_dataline((unsigned long long *)start);  in memory_post_test_lines()
403 		ret = memory_post_addrline((ulong *)(start+size-8),  in memory_post_test_lines()
410 static int memory_post_test_patterns(unsigned long start, unsigned long size)  in memory_post_test_patterns()
438 static int memory_post_test_regions(unsigned long start, unsigned long size)  in memory_post_test_regions()
440 	unsigned long i;  in memory_post_test_regions()
455 static int memory_post_tests(unsigned long start, unsigned long size)  in memory_post_tests()
472 	bd_t *bd = gd->bd;  in arch_memory_test_prepare()
475 	*size = (gd->ram_size >= 256 << 20 ?  in arch_memory_test_prepare()
476 			256 << 20 : gd->ram_size) - (1 << 20);  in arch_memory_test_prepare()
480 		*size = (ulong)bd - *vstart;  in arch_memory_test_prepare()