diff options
Diffstat (limited to 'src/cpu/amd/mtrr')
| -rw-r--r-- | src/cpu/amd/mtrr/amd_mtrr.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/cpu/amd/mtrr/amd_mtrr.c b/src/cpu/amd/mtrr/amd_mtrr.c index a0a51943ab..9d9d7b7c19 100644 --- a/src/cpu/amd/mtrr/amd_mtrr.c +++ b/src/cpu/amd/mtrr/amd_mtrr.c @@ -11,6 +11,7 @@ * GNU General Public License for more details. */ +#include <cbmem.h> #include <console/console.h> #include <device/device.h> #include <arch/cpu.h> @@ -76,6 +77,23 @@ static void setup_ap_ramtop(void) wrmsr(TOP_MEM2, msr); } +void add_uma_resource_below_tolm(struct device *nb, int idx) +{ + uint32_t topmem = bsp_topmem(); + uint32_t top_of_cacheable = get_top_of_ram(); + + if (top_of_cacheable == topmem) + return; + + uint32_t uma_base = top_of_cacheable; + uint32_t uma_size = topmem - top_of_cacheable; + + printk(BIOS_INFO, "%s: uma size 0x%08x, memory start 0x%08x\n", + __func__, uma_size, uma_base); + + uma_resource(nb, idx, uma_base / KiB, uma_size / KiB); +} + void amd_setup_mtrrs(void) { unsigned long address_bits; |