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lwmon5: add memory-pattern-test to FPGA POST.

This commit is contained in:
Sascha Laue 2008-05-13 13:29:54 +02:00 committed by Wolfgang Denk
parent e34a0e911b
commit 6956d53d99
1 changed files with 50 additions and 0 deletions
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50
post/board/lwmon5/fpga.c
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@ -41,6 +41,15 @@ DECLARE_GLOBAL_DATA_PTR;
#if CONFIG_POST & CFG_POST_BSPEC3
/* Testpattern for fpga memorytest */
static uint pattern[] = {
0x55555555,
0xAAAAAAAA,
0xAA5555AA,
0x55AAAA55,
0x0
};
static int one_scratch_test(uint value)
{
uint read_value;
@ -60,9 +69,42 @@ static int one_scratch_test(uint value)
return ret;
}
/* FPGA Memory-pattern-test */
static int fpga_mem_test(void * address)
{
int ret = 1;
uint read_value;
uint old_value;
uint i = 0;
/* save content */
old_value = in_be32(address);
while (pattern[i] != 0) {
out_be32(address, pattern[i]);
/* read other location (protect against data lines capacity) */
ret = in_be16((void *)FPGA_VERSION_REG);
/* verify test pattern */
read_value = in_be32(address);
if (read_value != pattern[i]) {
post_log("FPGA Memory test failed.");
post_log(" write %08X, read %08X at address %08X\n",
pattern[i], read_value, address);
ret = 1;
goto out;
}
i++;
}
ret = 0;
out:
out_be32(address, old_value);
return ret;
}
/* Verify FPGA, get version & memory size */
int fpga_post_test(int flags)
{
uint address;
uint old_value;
ushort version;
uint read_value;
@ -88,6 +130,14 @@ int fpga_post_test(int flags)
read_value = get_ram_size((void *)CFG_FPGA_BASE_1, 0x4000);
post_log("FPGA RAM size: %d bytes\n", read_value);
for (address = 0; address < 0x1000; address++) {
if (fpga_mem_test((void *)(FPGA_RAM_START + 4*address)) == 1) {
ret = 1;
goto out;
}
}
out:
return ret;
}