diff options
Diffstat (limited to 'src/northbridge/intel/i945/raminit.c')
| -rw-r--r-- | src/northbridge/intel/i945/raminit.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c index ca800f7bf6..a4a1eaf0ca 100644 --- a/src/northbridge/intel/i945/raminit.c +++ b/src/northbridge/intel/i945/raminit.c @@ -16,6 +16,8 @@ #include <console/console.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/cache.h> +#include <device/pci_def.h> +#include <device/device.h> #include <lib.h> #include <pc80/mc146818rtc.h> #include <spd.h> @@ -25,6 +27,7 @@ #include <lib.h> #include "raminit.h" #include "i945.h" +#include "chip.h" #include <cbmem.h> /* Debugging macros. */ @@ -48,6 +51,7 @@ #define RAM_EMRS_2 (0x1 << 21) #define RAM_EMRS_3 (0x2 << 21) +#define DEFAULT_PCI_MMIO_SIZE 768 static int get_dimm_spd_address(struct sys_info *sysinfo, int device) { if (sysinfo->spd_addresses) @@ -1495,7 +1499,9 @@ static void sdram_detect_dimm_size(struct sys_info * sysinfo) static int sdram_program_row_boundaries(struct sys_info *sysinfo) { int i; - int cum0, cum1, tolud, tom; + int cum0, cum1, tolud, tom, pci_mmio_size; + const struct device *dev; + const struct northbridge_intel_i945_config *cfg = NULL; printk(BIOS_DEBUG, "Setting RAM size...\n"); @@ -1534,8 +1540,17 @@ static int sdram_program_row_boundaries(struct sys_info *sysinfo) tom = tolud >> 3; /* Limit the value of TOLUD to leave some space for PCI memory. */ - if (tolud > 0xd0) - tolud = 0xd0; /* 3.25GB : 0.75GB */ + dev = dev_find_slot(0, PCI_DEVFN(0, 0)); + if (dev) + cfg = dev->chip_info; + + /* Don't use pci mmio sizes smaller than 768M */ + if (!cfg || cfg->pci_mmio_size <= DEFAULT_PCI_MMIO_SIZE) + pci_mmio_size = DEFAULT_PCI_MMIO_SIZE; + else + pci_mmio_size = cfg->pci_mmio_size; + + tolud = MIN(((4096 - pci_mmio_size) / 128) << 3, tolud); pci_write_config8(PCI_DEV(0,0,0), TOLUD, tolud); |