+#ifndef CONFIG_NAND_SPL
+static int get_law_entry(u8 i, struct law_entry *e)
+{
+ volatile u32 *base = (volatile u32 *)(CONFIG_SYS_IMMR + 0xc08);
+ volatile u32 *lawbar = base + 8 * i;
+ volatile u32 *lawar = base + 8 * i + 2;
+ u32 temp;
+
+ temp = in_be32(lawar);
+
+ if (!(temp & LAW_EN))
+ return 0;
+
+ e->addr = (u64)in_be32(lawbar) << 12;
+ e->size = temp & 0x3f;
+ e->trgt_id = (temp >> 20) & 0xff;
+
+ return 1;
+}
+#endif
+#endif
+
+int set_next_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
+{
+ u32 idx = ffz(gd->used_laws);
+
+ if (idx >= FSL_HW_NUM_LAWS)
+ return -1;
+
+ set_law(idx, addr, sz, id);
+
+ return idx;
+}
+
+#ifndef CONFIG_NAND_SPL
+int set_last_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
+{
+ u32 idx;
+
+ /* we have no LAWs free */
+ if (gd->used_laws == -1)
+ return -1;
+
+ /* grab the last free law */
+ idx = __ilog2(~(gd->used_laws));
+
+ if (idx >= FSL_HW_NUM_LAWS)
+ return -1;
+
+ set_law(idx, addr, sz, id);
+
+ return idx;
+}
+
+struct law_entry find_law(phys_addr_t addr)
+{
+ struct law_entry entry;
+ int i;
+
+ entry.index = -1;
+ entry.addr = 0;
+ entry.size = 0;
+ entry.trgt_id = 0;
+
+ for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
+ u64 upper;
+
+ if (!get_law_entry(i, &entry))
+ continue;
+
+ upper = entry.addr + (2ull << entry.size);
+ if ((addr >= entry.addr) && (addr < upper)) {
+ entry.index = i;
+ break;
+ }
+ }
+
+ return entry;
+}
+
+void print_laws(void)
+{
+ volatile u32 *base = (volatile u32 *)(CONFIG_SYS_IMMR + 0xc08);
+ volatile u32 *lawbar = base;
+ volatile u32 *lawar = base + 2;
+ int i;
+
+ printf("\nLocal Access Window Configuration\n");
+ for(i = 0; i < FSL_HW_NUM_LAWS; i++) {
+ printf("\tLAWBAR%d : 0x%08x, LAWAR%d : 0x%08x\n",
+ i, in_be32(lawbar), i, in_be32(lawar));
+ lawbar += 8;
+ lawar += 8;
+ }
+
+ 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;
+
+ /* recalculate size based on what was actually covered by the law */
+ law_sz = 1ull << __ilog2_u64(law_sz);
+
+ /* 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;
+}
+#endif
+