X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=arch%2Farm%2Finclude%2Fasm%2Femif.h;h=45668ca4dd737f7f0533f8bb363400dbf9f6e57d;hb=33b0f7b5e6665aa77ece288392774b8026a15660;hp=d9d521a51505728eff9e04674516aba66ce3b222;hpb=375a4496ff250baf6e4b845c1ebf40e4b3c409a3;p=oweals%2Fu-boot.git

diff --git a/arch/arm/include/asm/emif.h b/arch/arm/include/asm/emif.h
index d9d521a515..45668ca4dd 100644
--- a/arch/arm/include/asm/emif.h
+++ b/arch/arm/include/asm/emif.h
@@ -14,11 +14,15 @@
 #define _EMIF_H_
 #include <asm/types.h>
 #include <common.h>
+#include <asm/io.h>
 
 /* Base address */
 #define EMIF1_BASE				0x4c000000
 #define EMIF2_BASE				0x4d000000
 
+#define EMIF_4D					0x4
+#define EMIF_4D5				0x5
+
 /* Registers shifts, masks and values */
 
 /* EMIF_MOD_ID_REV */
@@ -1148,6 +1152,28 @@ struct read_write_regs {
 	u32 write_reg;
 };
 
+static inline u32 get_emif_rev(u32 base)
+{
+	struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+	return (readl(&emif->emif_mod_id_rev) & EMIF_REG_MAJOR_REVISION_MASK)
+		>> EMIF_REG_MAJOR_REVISION_SHIFT;
+}
+
+/*
+ * Get SDRAM type connected to EMIF.
+ * Assuming similar SDRAM parts are connected to both EMIF's
+ * which is typically the case. So it is sufficient to get
+ * SDRAM type from EMIF1.
+ */
+static inline u32 emif_sdram_type(void)
+{
+	struct emif_reg_struct *emif = (struct emif_reg_struct *)EMIF1_BASE;
+
+	return (readl(&emif->emif_sdram_config) &
+		EMIF_REG_SDRAM_TYPE_MASK) >> EMIF_REG_SDRAM_TYPE_SHIFT;
+}
+
 /* assert macros */
 #if defined(DEBUG)
 #define emif_assert(c)	({ if (!(c)) for (;;); })