karo: tx6: add support for boards with >= 2GiB memory

[karo-tx-uboot.git] / include / configs / tx6.h

diff --git a/include/configs/tx6.h b/include/configs/tx6.h
index 71a3d71b2b98808c6be329421c14e721591aae9d..9c755ddf03326d20775fde6a96b5feacd9a78494 100644 (file)
--- a/include/configs/tx6.h
+++ b/include/configs/tx6.h
@@ -86,7 +86,20 @@
 #define CONFIG_SYS_SDRAM_BUS_WIDTH     64
 #endif
 #endif /* CONFIG_SYS_SDRAM_BUS_WIDTH */
-#define PHYS_SDRAM_1_SIZE              (SZ_512M / 32 * CONFIG_SYS_SDRAM_BUS_WIDTH)
+#ifdef __ASSEMBLY__
+#define _AC(x,s)                       x
+#else
+#define _AC(x,s)                       (x##s)
+#endif
+#define UL(x)                          _AC(x,UL)
+#define PHYS_SDRAM_1_SIZE              (UL(CONFIG_SYS_SDRAM_CHIP_SIZE) * SZ_1M \
+                               / 32 * CONFIG_SYS_SDRAM_BUS_WIDTH)
+#if PHYS_SDRAM_1_SIZE > SZ_1G
+#define FDT_HIGH_STR                   "fdt_high=ffffffff\0"
+#else
+#define FDT_HIGH_STR                   ""
+#endif
+
 #ifdef CONFIG_SOC_MX6Q
 #define CONFIG_SYS_SDRAM_CLK           528
 #else
@@ -215,6 +228,7 @@
        EMMC_BOOT_PART_STR                                              \
        EMMC_BOOT_ACK_STR                                               \
        "fdtaddr=" xstr(CONFIG_FDTADDR) "\0"                            \
+       FDT_HIGH_STR                                                    \
        FDTSAVE_CMD_STR                                                 \
        "mtdids=" MTDIDS_DEFAULT "\0"                                   \
        "mtdparts=" MTDPARTS_DEFAULT "\0"                               \