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#include <arch/io.h>
#include <stdint.h>
#include <mem.h>
#include <part/sizeram.h>
#include <device/device.h>
#include <device/pci.h>
#include <console/console.h>
struct mem_range *sizeram(void)
{
unsigned long mmio_basek;
static struct mem_range mem[10];
device_t dev;
int i, idx;
#warning "FIXME handle interleaved nodes"
dev = dev_find_slot(0, PCI_DEVFN(0x18, 1));
if (!dev) {
return 0;
}
mmio_basek = (dev_root.resource[1].base >> 10);
/* Round mmio_basek to something the processor can support */
mmio_basek &= ~((1 << 6) -1);
#if 1
#warning "FIXME improve mtrr.c so we don't use up all of the mtrrs with a 64M MMIO hole"
/* Round the mmio hold to 256M */
mmio_basek &= ~((256*1024) - 1);
#endif
/* Temporary hack to get mmio handling working */
for(i = 0; i < 8; i++) {
#warning "FIXME handle multiple Hypertransport chains in device.c"
device_t node;
node = dev_find_slot(0, PCI_DEVFN(0x18 + i, 1));
pci_write_config32(node, 0xB8, ((mmio_basek >> 6) << 8) | (1<<1) | (1 << 0));
pci_write_config32(node, 0xBC, 0x00ffff00);
}
for(idx = i = 0; i < 8; i++) {
uint32_t base, limit;
unsigned basek, limitk, sizek;
base = pci_read_config32(dev, 0x40 + (i<<3));
limit = pci_read_config32(dev, 0x44 + (i<<3));
if ((base & ((1<<1)|(1<<0))) != ((1<<1)|(1<<0))) {
continue;
}
basek = (base & 0xffff0000) >> 2;
limitk = ((limit + 0x00010000) & 0xffff0000) >> 2;
sizek = limitk - basek;
if ((idx > 0) &&
((mem[idx -1].basek + mem[idx - 1].sizek) == basek)) {
mem[idx -1].sizek += sizek;
}
else {
mem[idx].basek = basek;
mem[idx].sizek = sizek;
idx++;
}
/* See if I need to split the region to accomodate pci memory space */
if ((mem[idx - 1].basek <= mmio_basek) &&
((mem[idx - 1].basek + mem[idx - 1].sizek) > mmio_basek)) {
if (mem[idx - 1].basek < mmio_basek) {
unsigned pre_sizek;
pre_sizek = mmio_basek - mem[idx - 1].basek;
mem[idx].basek = mmio_basek;
mem[idx].sizek = mem[idx - 1].sizek - pre_sizek;
mem[idx - 1].sizek = pre_sizek;
idx++;
}
if ((mem[idx - 1].basek + mem[idx - 1].sizek) <= 4*1024*1024) {
idx -= 1;
}
else {
mem[idx - 1].basek = 4*1024*1024;
mem[idx - 1].sizek -= (4*1024*1024 - mmio_basek);
}
}
}
#if 0
for(i = 0; i < idx; i++) {
printk_debug("mem[%d].basek = %08x mem[%d].sizek = %08x\n",
i, mem[i].basek, i, mem[i].sizek);
}
#endif
while(idx < sizeof(mem)/sizeof(mem[0])) {
mem[idx].basek = 0;
mem[idx].sizek = 0;
idx++;
}
return mem;
}
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