Hardware
/
litex
mirror of https://github.com/enjoy-digital/litex.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'master' of https://github.com/m-labs/misoc

This commit is contained in:
Sebastien Bourdeauducq 2015-03-27 19:22:29 +01:00
parent 54c14c7119 f4c35e358e
commit 54a88da5b8
1 changed files with 41 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
software/bios/sdram.c
View File

@ -422,13 +422,16 @@ int sdrlevel(void)
#endif /* CSR_DDRPHY_BASE */
#define TEST_SIZE (2*1024*1024)
#define TEST_RANDOM_DATA 1
#define TEST_DATA_SIZE (2*1024*1024)
#define TEST_DATA_RANDOM 1
#define TEST_ADDR_SIZE (32*1024)
#define TEST_ADDR_RANDOM 0
#define ONEZERO 0xAAAAAAAA
#define ZEROONE 0x55555555
static unsigned int seed_to_data(unsigned int seed, int random)
static unsigned int seed_to_data_32(unsigned int seed, int random)
{
if (random)
return 1664525*seed + 1013904223;
@ -436,11 +439,20 @@ static unsigned int seed_to_data(unsigned int seed, int random)
return seed + 1;
}
static unsigned short seed_to_data_16(unsigned short seed, int random)
{
if (random)
return 25173*seed + 13849;
else
return seed + 1;
}
int memtest_silent(void)
{
volatile unsigned int *array = (unsigned int *)MAIN_RAM_BASE;
int i;
unsigned int seed;
unsigned int seed_32;
unsigned short seed_16;
unsigned int error_cnt;
/* test data bus */
@ -463,19 +475,35 @@ int memtest_silent(void)
}
/* test counter or random data */
seed = 0;
for(i=0;i<TEST_SIZE/4;i++) {
seed = seed_to_data(seed, TEST_RANDOM_DATA);
array[i] = seed;
seed_32 = 0;
for(i=0;i<TEST_DATA_SIZE/4;i++) {
seed_32 = seed_to_data_32(seed_32, TEST_DATA_RANDOM);
array[i] = seed_32;
}
seed = 0;
seed_32 = 0;
error_cnt = 0;
for(i=0;i<TEST_SIZE/4;i++) {
seed = seed_to_data(seed, TEST_RANDOM_DATA);
if(array[i] != seed)
for(i=0;i<TEST_DATA_SIZE/4;i++) {
seed_32 = seed_to_data_32(seed_32, TEST_DATA_RANDOM);
if(array[i] != seed_32)
error_cnt++;
}
/* test random addressing */
seed_16 = 0;
for(i=0;i<TEST_ADDR_SIZE/4;i++) {
seed_16 = seed_to_data_16(seed_16, TEST_ADDR_RANDOM);
array[(unsigned int) seed_16] = i;
}
seed_16 = 0;
error_cnt = 0;
for(i=0;i<TEST_ADDR_SIZE/4;i++) {
seed_16 = seed_to_data_16(seed_16, TEST_ADDR_RANDOM);
if(array[(unsigned int) seed_16] != i)
error_cnt++;
}
return error_cnt;
}
@ -485,7 +513,7 @@ int memtest(void)
e = memtest_silent();
if(e != 0) {
printf("Memtest failed: %d/%d words incorrect\n", e, TEST_SIZE/4);
printf("Memtest failed: %d/%d words incorrect\n", e, TEST_DATA_SIZE/4 + TEST_ADDR_SIZE/4);
return 0;
} else {
printf("Memtest OK\n");