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void outl(unsigned int value, unsigned short port)
{
__builtin_outl(value, port);
}
#define PIIX4_DEVFN 0x90
#define SMBUS_MEM_DEVICE_START 0x50
#define SMBUS_MEM_DEVICE_END 0x53
#define SMBUS_MEM_DEVICE_INC 1
static void spd_set_drb(void)
{
/*
* Effects: Uses serial presence detect to set the
* DRB registers which holds the ending memory address assigned
* to each DIMM.
*/
unsigned end_of_memory;
unsigned device;
end_of_memory = 0; /* in multiples of 8MiB */
device = SMBUS_MEM_DEVICE_START;
while (device <= SMBUS_MEM_DEVICE_END) {
unsigned side1_bits;
side1_bits = -1;
/* Compute the end address for the DRB register */
/* Only process dimms < 2GB (2^8 * 8MB) */
if (side1_bits < 8) {
end_of_memory += (1 << side1_bits);
}
outl(end_of_memory, 0x1234);
}
}
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