1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
static void write_phys(unsigned long addr, unsigned long value)
{
#if HAVE_MOVNTI
asm volatile(
"movnti %1, (%0)"
: /* outputs */
: "r" (addr), "r" (value) /* inputs */
#ifndef __GNUC__
: /* clobbers */
#endif
);
#else
volatile unsigned long *ptr;
ptr = (void *)addr;
*ptr = value;
#endif
}
static unsigned long read_phys(unsigned long addr)
{
volatile unsigned long *ptr;
ptr = (void *)addr;
return *ptr;
}
static void ram_fill(unsigned long start, unsigned long stop)
{
unsigned long addr;
/*
* Fill.
*/
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("DRAM fill: 0x%08x-0x%08x\r\n", start, stop);
#else
print_debug("DRAM fill: ");
print_debug_hex32(start);
print_debug("-");
print_debug_hex32(stop);
print_debug("\r\n");
#endif
for(addr = start; addr < stop ; addr += 4) {
/* Display address being filled */
if (!(addr & 0xfffff)) {
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("%08x \r", addr);
#else
print_debug_hex32(addr);
print_debug(" \r");
#endif
}
write_phys(addr, addr);
};
/* Display final address */
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("%08x\r\nDRAM filled\r\n", addr);
#else
print_debug_hex32(addr);
print_debug("\r\nDRAM filled\r\n");
#endif
}
static void ram_verify(unsigned long start, unsigned long stop)
{
unsigned long addr;
int i = 0;
/*
* Verify.
*/
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("DRAM verify: 0x%08x-0x%08x\r\n", start, stop);
#else
print_debug("DRAM verify: ");
print_debug_hex32(start);
print_debug_char('-');
print_debug_hex32(stop);
print_debug("\r\n");
#endif
for(addr = start; addr < stop ; addr += 4) {
unsigned long value;
/* Display address being tested */
if (!(addr & 0xfffff)) {
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("%08x \r", addr);
#else
print_debug_hex32(addr);
print_debug(" \r");
#endif
}
value = read_phys(addr);
if (value != addr) {
/* Display address with error */
#if CONFIG_USE_PRINTK_IN_CAR
printk_err("Fail: @0x%08x Read value=0x%08x\r\n", addr, value);
#else
print_err("Fail: @0x");
print_err_hex32(addr);
print_err(" Read value=0x");
print_err_hex32(value);
print_err("\r\n");
#endif
i++;
if(i>256) {
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("Aborting.\n\r");
#else
print_debug("Aborting.\n\r");
#endif
break;
}
}
}
/* Display final address */
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("%08x", addr);
#else
print_debug_hex32(addr);
#endif
if (i) {
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("\r\nDRAM did _NOT_ verify!\r\n");
#else
print_debug("\r\nDRAM did _NOT_ verify!\r\n");
#endif
die("DRAM ERROR");
}
else {
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("\r\nDRAM range verified.\r\n");
#else
print_debug("\r\nDRAM range verified.\r\n");
#endif
}
}
void ram_check(unsigned long start, unsigned long stop)
{
/*
* This is much more of a "Is my DRAM properly configured?"
* test than a "Is my DRAM faulty?" test. Not all bits
* are tested. -Tyson
*/
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("Testing DRAM : %08x - %08x\r\n", start, stop);
#else
print_debug("Testing DRAM : ");
print_debug_hex32(start);
print_debug("-");
print_debug_hex32(stop);
print_debug("\r\n");
#endif
ram_fill(start, stop);
ram_verify(start, stop);
#if CONFIG_USE_PRINTK_IN_CAR
printk_debug("Done.\r\n");
#else
print_debug("Done.\r\n");
#endif
}
|
