diff options
Diffstat (limited to 'src/soc/intel/broadwell/memmap.c')
| -rw-r--r-- | src/soc/intel/broadwell/memmap.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/soc/intel/broadwell/memmap.c b/src/soc/intel/broadwell/memmap.c index 046cc1da07..28f4062a6a 100644 --- a/src/soc/intel/broadwell/memmap.c +++ b/src/soc/intel/broadwell/memmap.c @@ -23,19 +23,24 @@ #include <broadwell/pci_devs.h> #include <broadwell/systemagent.h> -unsigned long get_top_of_ram(void) +static uintptr_t dpr_region_start(void) { /* * Base of DPR is top of usable DRAM below 4GiB. The register has * 1 MiB alignment and reports the TOP of the range, the base * must be calculated from the size in MiB in bits 11:4. */ - u32 dpr = pci_read_config32(SA_DEV_ROOT, DPR); - u32 tom = dpr & ~((1 << 20) - 1); + uintptr_t dpr = pci_read_config32(SA_DEV_ROOT, DPR); + uintptr_t tom = dpr & ~((1 << 20) - 1); /* Subtract DMA Protected Range size if enabled */ if (dpr & DPR_EPM) tom -= (dpr & DPR_SIZE_MASK) << 16; - return (unsigned long)tom; + return tom; +} + +void *cbmem_top(void) +{ + return (void *) dpr_region_start(); } |