Merge branch 'master' of git://git.denx.de/u-boot-ppc4xx

[oweals/u-boot.git] / drivers / misc / fsl_law.c

diff --git a/drivers/misc/fsl_law.c b/drivers/misc/fsl_law.c
index 48ece4f090b8c2af5e9705529ad22fafa43f7de1..2e946143bc03385c57f550997ce02b0e540fa097 100644 (file)
--- a/drivers/misc/fsl_law.c
+++ b/drivers/misc/fsl_law.c
@@ -38,7 +38,7 @@ DECLARE_GLOBAL_DATA_PTR;
       defined(CONFIG_MPC8568) || \
       defined(CONFIG_MPC8641) || defined(CONFIG_MPC8610)
 #define FSL_HW_NUM_LAWS 10
-#elif defined(CONFIG_MPC8572)
+#elif defined(CONFIG_MPC8536) || defined(CONFIG_MPC8572)
 #define FSL_HW_NUM_LAWS 12
 #else
 #error FSL_HW_NUM_LAWS not defined for this platform
@@ -121,6 +121,45 @@ void print_laws(void)
        return;
 }
 
+/* use up to 2 LAWs for DDR, used the last available LAWs */
+int set_ddr_laws(u64 start, u64 sz, enum law_trgt_if id)
+{
+       u64 start_align, law_sz;
+       int law_sz_enc;
+
+       if (start == 0)
+               start_align = 1ull << (LAW_SIZE_32G + 1);
+       else
+               start_align = 1ull << (ffs64(start) - 1);
+       law_sz = min(start_align, sz);
+       law_sz_enc = __ilog2_u64(law_sz) - 1;
+
+       if (set_last_law(start, law_sz_enc, id) < 0)
+               return -1;
+
+       /* do we still have anything to map */
+       sz = sz - law_sz;
+       if (sz) {
+               start += law_sz;
+
+               start_align = 1ull << (ffs64(start) - 1);
+               law_sz = min(start_align, sz);
+               law_sz_enc = __ilog2_u64(law_sz) - 1;
+
+               if (set_last_law(start, law_sz_enc, id) < 0)
+                       return -1;
+       } else {
+               return 0;
+       }
+
+       /* do we still have anything to map */
+       sz = sz - law_sz;
+       if (sz)
+               return 1;
+
+       return 0;
+}
+
 void init_laws(void)
 {
        int i;