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soc/software/bios/sdram: add optional memtest debug traces

This commit is contained in:
Florent Kermarrec 2017-08-18 09:42:27 +02:00
parent c02de1632b
commit 8f3dcf90ab
1 changed files with 33 additions and 4 deletions
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37
litex/soc/software/bios/sdram.c
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@ -436,10 +436,13 @@ static unsigned short seed_to_data_16(unsigned short seed, int random)
#define MEMTEST_BUS_SIZE (512)
#endif
//#define MEMTEST_BUS_DEBUG
static int memtest_bus(void)
{
volatile unsigned int *array = (unsigned int *)MAIN_RAM_BASE;
int i, errors;
unsigned int rdata;
errors = 0;
@ -449,8 +452,13 @@ static int memtest_bus(void)
flush_cpu_dcache();
flush_l2_cache();
for(i=0;i<MEMTEST_BUS_SIZE/4;i++) {
if(array[i] != ONEZERO)
rdata = array[i];
if(rdata != ONEZERO) {
errors++;
#ifdef MEMTEST_BUS_DEBUG
printf("[bus: %0x]: %08x vs %08x\n", i, rdata, ONEZERO);
#endif
}
}
for(i=0;i<MEMTEST_BUS_SIZE/4;i++) {
@ -459,8 +467,13 @@ static int memtest_bus(void)
flush_cpu_dcache();
flush_l2_cache();
for(i=0;i<MEMTEST_BUS_SIZE/4;i++) {
if(array[i] != ZEROONE)
rdata = array[i];
if(rdata != ZEROONE) {
errors++;
#ifdef MEMTEST_BUS_DEBUG
printf("[bus %0x]: %08x vs %08x\n", i, rdata, ZEROONE);
#endif
}
}
return errors;
@ -471,11 +484,14 @@ static int memtest_bus(void)
#endif
#define MEMTEST_DATA_RANDOM 1
//#define MEMTEST_DATA_DEBUG
static int memtest_data(void)
{
volatile unsigned int *array = (unsigned int *)MAIN_RAM_BASE;
int i, errors;
unsigned int seed_32;
unsigned int rdata;
errors = 0;
seed_32 = 0;
@ -490,8 +506,13 @@ static int memtest_data(void)
flush_l2_cache();
for(i=0;i<MEMTEST_DATA_SIZE/4;i++) {
seed_32 = seed_to_data_32(seed_32, MEMTEST_DATA_RANDOM);
if(array[i] != seed_32)
rdata = array[i];
if(rdata != seed_32) {
errors++;
#ifdef MEMTEST_DATA_DEBUG
printf("[data %0x]: %08x vs %08x\n", i, rdata, seed_32);
#endif
}
}
return errors;
@ -501,11 +522,14 @@ static int memtest_data(void)
#endif
#define MEMTEST_ADDR_RANDOM 0
//#define MEMTEST_ADDR_DEBUG
static int memtest_addr(void)
{
volatile unsigned int *array = (unsigned int *)MAIN_RAM_BASE;
int i, errors;
unsigned short seed_16;
unsigned short rdata;
errors = 0;
seed_16 = 0;
@ -520,8 +544,13 @@ static int memtest_addr(void)
flush_l2_cache();
for(i=0;i<MEMTEST_ADDR_SIZE/4;i++) {
seed_16 = seed_to_data_16(seed_16, MEMTEST_ADDR_RANDOM);
if(array[(unsigned int) seed_16] != i)
rdata = array[(unsigned int) seed_16];
if(rdata != i) {
errors++;
#ifdef MEMTEST_ADDR_DEBUG
printf("[addr %0x]: %08x vs %08x\n", i, rdata, i);
#endif
}
}
return errors;