amd64_edac: fix DRAM base and limit extraction

On Fam10h and above, F1x[1, 0][7C:40] are DRAM Base/Limit registers
which specify the destination node of a DRAM address. Those address
boundaries are being extracted into ->dram_base[] and ->dram_limit[].
Correct the extraction masks to match the respective address bits.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 85c308b..4f4ac82 100644 (file)
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1368,8 +1368,8 @@ static void f10_read_dram_base_limit(struct amd64_pvt *pvt, int dram)
 
        pvt->dram_IntlvEn[dram] = (low_base >> 8) & 0x7;
 
-       pvt->dram_base[dram] = (((((u64) high_base & 0x000000FF) << 32) |
-                               ((u64) low_base & 0xFFFF0000))) << 8;
+       pvt->dram_base[dram] = (((u64)high_base & 0x000000FF) << 40) |
+                              (((u64)low_base  & 0xFFFF0000) << 24);
 
        low_offset = K8_DRAM_LIMIT_LOW + (dram << 3);
        high_offset = F10_DRAM_LIMIT_HIGH + (dram << 3);
@@ -1390,9 +1390,9 @@ static void f10_read_dram_base_limit(struct amd64_pvt *pvt, int dram)
         * Extract address values and form a LIMIT address. Limit is the HIGHEST
         * memory location of the region, so low 24 bits need to be all ones.
         */
-       low_limit |= 0x0000FFFF;
-       pvt->dram_limit[dram] =
-               ((((u64) high_limit << 32) + (u64) low_limit) << 8) | (0xFF);
+       pvt->dram_limit[dram] = (((u64)high_limit & 0x000000FF) << 40) |
+                               (((u64) low_limit & 0xFFFF0000) << 24) |
+                               0x00FFFFFF;
 }
 
 static void f10_read_dram_ctl_register(struct amd64_pvt *pvt)