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

[u-boot] / arch / arm / mach-uniphier / dram_init.c

diff --git a/arch/arm/mach-uniphier/dram_init.c b/arch/arm/mach-uniphier/dram_init.c
index ef0e2e8f54c5ca89cc0d101ca229a4b9a5df8b3f..489366c63f948ad36d7f2531c774cb927f82fb7a 100644 (file)
--- a/arch/arm/mach-uniphier/dram_init.c
+++ b/arch/arm/mach-uniphier/dram_init.c
@@ -9,6 +9,9 @@
 #include <fdtdec.h>
 #include <linux/err.h>
 
+#include "init.h"
+#include "soc-info.h"
+
 DECLARE_GLOBAL_DATA_PTR;
 
 static const void *get_memory_reg_prop(const void *fdt, int *lenp)
@@ -81,3 +84,40 @@ void dram_init_banksize(void)
                      (unsigned long)gd->bd->bi_dram[i].size);
        }
 }
+
+#ifdef CONFIG_OF_BOARD_SETUP
+/*
+ * The DRAM PHY requires 64 byte scratch area in each DRAM channel
+ * for its dynamic PHY training feature.
+ */
+int ft_board_setup(void *fdt, bd_t *bd)
+{
+       const struct uniphier_board_data *param;
+       unsigned long rsv_addr;
+       const unsigned long rsv_size = 64;
+       int ch, ret;
+
+       if (uniphier_get_soc_type() != SOC_UNIPHIER_LD20)
+               return 0;
+
+       param = uniphier_get_board_param();
+       if (!param) {
+               printf("failed to get board parameter\n");
+               return -ENODEV;
+       }
+
+       for (ch = 0; ch < param->dram_nr_ch; ch++) {
+               rsv_addr = param->dram_ch[ch].base + param->dram_ch[ch].size;
+               rsv_addr -= rsv_size;
+
+               ret = fdt_add_mem_rsv(fdt, rsv_addr, rsv_size);
+               if (ret)
+                       return -ENOSPC;
+
+               printf("   Reserved memory region for DRAM PHY training: addr=%lx size=%lx\n",
+                      rsv_addr, rsv_size);
+       }
+
+       return 0;
+}
+#endif