diff options
| -rw-r--r-- | src/northbridge/intel/sandybridge/northbridge.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c index 0a413b4c7b..d8e2e9d6b3 100644 --- a/src/northbridge/intel/sandybridge/northbridge.c +++ b/src/northbridge/intel/sandybridge/northbridge.c @@ -51,6 +51,21 @@ int bridge_silicon_revision(void) return bridge_revision_id; } +static unsigned long get_top_of_ram(void) +{ + /* Base of TSEG is top of usable DRAM */ + u32 tom = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0,0)), TSEG); + return (unsigned long) tom; +} + +struct cbmem_entry *get_cbmem_toc(void) +{ + static struct cbmem_entry *toc = NULL; + if (!toc) + toc = (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE); + return toc; +} + /* Reserve everything between A segment and 1MB: * * 0xa0000 - 0xbffff: legacy VGA |