- Initial checkin of the freebios2 tree

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@784 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Eric Biederman
2003-04-22 19:02:15 +00:00
parent b138ac83b5
commit 8ca8d7665d
109 changed files with 13965 additions and 0 deletions

View File

@@ -0,0 +1,25 @@
void dump_spd_registers(void)
{
unsigned device;
device = SMBUS_MEM_DEVICE_START;
printk_debug("\n");
while(device <= SMBUS_MEM_DEVICE_END) {
int status = 0;
int i;
printk_debug("dimm %02x", device);
for(i = 0; (i < 256) && (status == 0); i++) {
unsigned char byte;
if ((i % 20) == 0) {
printk_debug("\n%3d: ", i);
}
status = smbus_read_byte(device, i, &byte);
if (status != 0) {
printk_debug("bad device\n");
continue;
}
printk_debug("%02x ", byte);
}
device += SMBUS_MEM_DEVICE_INC;
printk_debug("\n");
}
}

35
src/sdram/generic_sdram.c Normal file
View File

@@ -0,0 +1,35 @@
void sdram_no_memory(void)
{
print_err("No memory!!\r\n");
while(1) {
hlt();
}
}
/* Setup SDRAM */
void sdram_initialize(void)
{
print_debug("Ram1\r\n");
/* Set the registers we can set once to reasonable values */
sdram_set_registers();
print_debug("Ram2\r\n");
/* Now setup those things we can auto detect */
sdram_set_spd_registers();
print_debug("Ram3\r\n");
/* Now that everything is setup enable the SDRAM.
* Some chipsets do the work for use while on others
* we need to it by hand.
*/
sdram_enable();
print_debug("Ram4\r\n");
sdram_first_normal_reference();
print_debug("Ram5\r\n");
sdram_enable_refresh();
sdram_special_finishup();
print_debug("Ram6\r\n");
}