[PATCH] Update AMCC Yucca 440SPe eval board support

The AMCC Yucca now uses the common 440SP(e) DDR SPD code for DDR
inititializition. This includes DDR auto calibration and support
for different DIMM modules, instead of the fixed setup used in
the earlier version.

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 26 insertions, 57 deletions

diff --git a/board/amcc/yucca/init.S b/board/amcc/yucca/init.S
index c9eca686b2..c92dcf7a51 100644
--- a/board/amcc/yucca/init.S
+++ b/board/amcc/yucca/init.S
@@ -1,4 +1,7 @@
 /*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
  *  Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com>
  *
  * See file CREDITS for list of people who contributed to this
@@ -19,56 +22,10 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */
-/* port to AMCC 440SPE evaluatioon board - SG April 12,2005  */
 
 #include <ppc_asm.tmpl>
 #include <config.h>
-
-/* General */
-#define TLB_VALID   0x00000200
-
-/* Supported page sizes */
-
-#define SZ_1K	0x00000000
-#define SZ_4K	0x00000010
-#define SZ_16K	0x00000020
-#define SZ_64K	0x00000030
-#define SZ_256K	0x00000040
-#define SZ_1M	0x00000050
-#define SZ_16M	0x00000070
-#define SZ_256M	0x00000090
-
-/* Storage attributes */
-#define SA_W	0x00000800	/* Write-through */
-#define SA_I	0x00000400	/* Caching inhibited */
-#define SA_M	0x00000200	/* Memory coherence */
-#define SA_G	0x00000100	/* Guarded */
-#define SA_E	0x00000080	/* Endian */
-
-/* Access control */
-#define AC_X	0x00000024	/* Execute */
-#define AC_W	0x00000012	/* Write */
-#define AC_R	0x00000009	/* Read */
-
-/* Some handy macros */
-
-#define EPN(e)		((e) & 0xfffffc00)
-#define TLB0(epn,sz)	((EPN((epn)) | (sz) | TLB_VALID ))
-#define TLB1(rpn,erpn)	(((rpn) & 0xfffffc00) | (erpn))
-#define TLB2(a)		((a) & 0x00000fbf)
-
-#define tlbtab_start\
-	mflr	r1	;\
-	bl	0f	;
-
-#define tlbtab_end\
-	.long 0, 0, 0	;\
-0:	mflr	r0	;\
-	mtlr	r1	;\
-	blr		;
-
-#define tlbentry(epn,sz,rpn,erpn,attr)\
-	.long TLB0(epn,sz),TLB1(rpn,erpn),TLB2(attr)
+#include <asm-ppc/mmu.h>
 
 /**************************************************************************
  * TLB TABLE
@@ -89,12 +46,18 @@
 	.globl tlbtabA
 tlbtabA:
 	tlbtab_start
-	tlbentry(0xfff00000, SZ_16M, 0xfff00000, 4, AC_R|AC_W|AC_X|SA_G)
 
-	tlbentry(CFG_SDRAM_BASE, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
-	tlbentry(CFG_SDRAM_BASE + 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
-	tlbentry(CFG_SDRAM_BASE + 0x20000000, SZ_256M, 0x20000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
-	tlbentry(CFG_SDRAM_BASE + 0x30000000, SZ_256M, 0x30000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
+	/*
+	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
+	 * speed up boot process. It is patched after relocation to enable SA_I
+	 */
+	tlbentry(0xff000000, SZ_16M, 0xff000000, 4, AC_R|AC_W|AC_X|SA_G)
+
+	/*
+	 * TLB entries for SDRAM are not needed on this platform.
+	 * They are dynamically generated in the SPD DDR(2) detection
+	 * routine.
+	 */
 
 	tlbentry(CFG_ISRAM_BASE, SZ_256K, 0x00000000, 4, AC_R|AC_W|AC_X|SA_I)
 	tlbentry(CFG_FPGA_BASE, SZ_1K, 0xE2000000, 4,AC_R|AC_W|SA_I)
@@ -126,12 +89,18 @@ tlbtabA:
 	.globl tlbtabB
 tlbtabB:
 	tlbtab_start
-	tlbentry(0xfff00000, SZ_16M, 0xfff00000, 4, AC_R|AC_W|AC_X|SA_G)
 
-	tlbentry(CFG_SDRAM_BASE, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
-	tlbentry(CFG_SDRAM_BASE + 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
-	tlbentry(CFG_SDRAM_BASE + 0x20000000, SZ_256M, 0x20000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
-	tlbentry(CFG_SDRAM_BASE + 0x30000000, SZ_256M, 0x30000000, 0, AC_R|AC_W|AC_X|SA_G|SA_I)
+	/*
+	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
+	 * speed up boot process. It is patched after relocation to enable SA_I
+	 */
+	tlbentry(0xff000000, SZ_16M, 0xff000000, 4, AC_R|AC_W|AC_X|SA_G)
+
+	/*
+	 * TLB entries for SDRAM are not needed on this platform.
+	 * They are dynamically generated in the SPD DDR(2) detection
+	 * routine.
+	 */
 
 	tlbentry(CFG_ISRAM_BASE, SZ_256K, 0x00000000, 4, AC_R|AC_W|AC_X|SA_I)
 	tlbentry(CFG_FPGA_BASE, SZ_1K, 0xE2000000, 4,AC_R|AC_W|SA_I)