bed2f9c2fe
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2882 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
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.
|
|
*/
|
|
print_debug("DRAM fill: ");
|
|
print_debug_hex32(start);
|
|
print_debug("-");
|
|
print_debug_hex32(stop);
|
|
print_debug("\r\n");
|
|
for(addr = start; addr < stop ; addr += 4) {
|
|
/* Display address being filled */
|
|
if (!(addr & 0xffff)) {
|
|
print_debug_hex32(addr);
|
|
print_debug(" \r");
|
|
}
|
|
write_phys(addr, addr);
|
|
};
|
|
/* Display final address */
|
|
print_debug_hex32(addr);
|
|
print_debug("\r\nDRAM filled\r\n");
|
|
}
|
|
|
|
static void ram_verify(unsigned long start, unsigned long stop)
|
|
{
|
|
unsigned long addr;
|
|
int i = 0;
|
|
/*
|
|
* Verify.
|
|
*/
|
|
print_debug("DRAM verify: ");
|
|
print_debug_hex32(start);
|
|
print_debug_char('-');
|
|
print_debug_hex32(stop);
|
|
print_debug("\r\n");
|
|
for(addr = start; addr < stop ; addr += 4) {
|
|
unsigned long value;
|
|
/* Display address being tested */
|
|
if (!(addr & 0xffff)) {
|
|
print_debug_hex32(addr);
|
|
print_debug(" \r");
|
|
}
|
|
value = read_phys(addr);
|
|
if (value != addr) {
|
|
/* Display address with error */
|
|
print_err("Fail: @0x");
|
|
print_err_hex32(addr);
|
|
print_err(" Read value=0x");
|
|
print_err_hex32(value);
|
|
print_err("\r\n");
|
|
i++;
|
|
if(i>256) {
|
|
print_debug("Aborting.\n\r");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* Display final address */
|
|
print_debug_hex32(addr);
|
|
if (i) {
|
|
print_debug("\r\nDRAM did _NOT_ verify!\r\n");
|
|
}
|
|
else {
|
|
print_debug("\r\nDRAM range verified.\r\n");
|
|
}
|
|
}
|
|
|
|
|
|
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
|
|
*/
|
|
print_debug("Testing DRAM : ");
|
|
print_debug_hex32(start);
|
|
print_debug("-");
|
|
print_debug_hex32(stop);
|
|
print_debug("\r\n");
|
|
ram_fill(start, stop);
|
|
ram_verify(start, stop);
|
|
print_debug("Done.\r\n");
|
|
}
|
|
|