Add support for new TQM5200 revisions

[platform/kernel/u-boot.git] / board / tqm5200 / tqm5200.c

diff --git a/board/tqm5200/tqm5200.c b/board/tqm5200/tqm5200.c
index c6309e3..1756e7f 100644 (file)
--- a/board/tqm5200/tqm5200.c
+++ b/board/tqm5200/tqm5200.c
@@ -1,11 +1,11 @@
 /*
- * (C) Copyright 2003-2004
+ * (C) Copyright 2003-2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * (C) Copyright 2004
  * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
  *
- * (C) Copyright 2004-2005
+ * (C) Copyright 2004-2006
  * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
  *
  * See file CREDITS for list of people who contributed to this
@@ -30,6 +30,7 @@
 #include <common.h>
 #include <mpc5xxx.h>
 #include <pci.h>
+#include <asm/processor.h>
 
 #ifdef CONFIG_VIDEO_SM501
 #include <sm501.h>
@@ -101,6 +102,8 @@ long int initdram (int board_type)
 {
        ulong dramsize = 0;
        ulong dramsize2 = 0;
+       uint svr, pvr;
+
 #ifndef CFG_RAMBOOT
        ulong test1, test2;
 
@@ -190,11 +193,31 @@ long int initdram (int board_type)
        } else {
                dramsize2 = 0;
        }
-
 #endif /* CFG_RAMBOOT */
 
-/*     return dramsize + dramsize2; */
+       /*
+        * On MPC5200B we need to set the special configuration delay in the
+        * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
+        * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
+        *
+        * "The SDelay should be written to a value of 0x00000004. It is
+        * required to account for changes caused by normal wafer processing
+        * parameters."
+        */
+       svr = get_svr();
+       pvr = get_pvr();
+       if ((SVR_MJREV(svr) >= 2) &&
+           (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
+
+               *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
+               __asm__ volatile ("sync");
+       }
+
+#if defined(CONFIG_TQM5200_B)
+       return dramsize + dramsize2;
+#else
        return dramsize;
+#endif /* CONFIG_TQM5200_B */
 }
 
 #elif defined(CONFIG_MGT5100)
@@ -255,7 +278,11 @@ int checkboard (void)
        return 0;
 #endif
 #if defined (CONFIG_TQM5200)
+#if defined(CONFIG_TQM5200_B)
+       puts ("Board: TQM5200 or TQM5200S (TQ-Components GmbH)\n");
+#else
        puts ("Board: TQM5200 (TQ-Components GmbH)\n");
+#endif /* CONFIG_TQM5200_B */
 #endif
 #if defined (CONFIG_STK52XX)
        puts ("       on a STK52XX baseboard\n");