Initial revision

1 files changed, 168 insertions, 0 deletions

diff --git a/board/trab/memsetup.S b/board/trab/memsetup.S
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--- /dev/null
+++ b/board/trab/memsetup.S
@@ -0,0 +1,168 @@
+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
+ *                     Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
+ *
+ * Modified for the TRAB board by
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+
+#include <config.h>
+#include <version.h>
+
+
+/* some parameters for the board */
+
+/*
+ *
+ * Copied from linux/arch/arm/boot/compressed/head-s3c2400.S
+ *
+ * Copyright (C) 2001 Samsung Electronics by chc, 010406
+ *
+ * TRAB specific tweaks.
+ *
+ */
+
+/* memory controller */
+#define BWSCON 0x14000000
+
+/* Bank0 */
+#define B0_Tacs	0x0	/* 0 clk */
+#define B0_Tcos	0x0	/* 0 clk */
+#define B0_Tacc	0x7	/* 14 clk */
+#define B0_Tcoh	0x0	/* 0 clk */
+#define B0_Tah	0x0	/* 0 clk */
+#define B0_Tacp	0x0
+#define B0_PMC	0x0	/* normal */
+
+/* Bank1 - SRAM */
+#define B1_Tacs	0x0	/* 0 clk */
+#define B1_Tcos	0x0	/* 0 clk */
+#define B1_Tacc	0x7	/* 14 clk */
+#define B1_Tcoh	0x0	/* 0 clk */
+#define B1_Tah	0x0	/* 0 clk */
+#define B1_Tacp	0x0
+#define B1_PMC	0x0	/* normal */
+
+/* Bank2 - CPLD */
+#define B2_Tacs	0x0	/* 0 clk */
+#define B2_Tcos	0x4	/* 4 clk */
+#define B2_Tacc	0x7	/* 14 clk */
+#define B2_Tcoh	0x4	/* 4 clk */
+#define B2_Tah	0x0	/* 0 clk */
+#define B2_Tacp	0x0
+#define B2_PMC	0x0	/* normal */
+
+/* Bank3 - setup for the cs8900 */
+#define B3_Tacs	0x3	/* 4 clk */
+#define B3_Tcos	0x3	/* 4 clk */
+#define B3_Tacc	0x7	/* 14 clk */
+#define B3_Tcoh	0x1	/* 1 clk */
+#define B3_Tah	0x0	/* 0 clk */
+#define B3_Tacp	0x3	/* 6 clk */
+#define B3_PMC	0x0	/* normal */
+
+/* Bank4 */
+#define B4_Tacs	0x0	/* 0 clk */
+#define B4_Tcos	0x0	/* 0 clk */
+#define B4_Tacc	0x7	/* 14 clk */
+#define B4_Tcoh	0x0	/* 0 clk */
+#define B4_Tah	0x0	/* 0 clk */
+#define B4_Tacp	0x0
+#define B4_PMC	0x0	/* normal */
+
+/* Bank5 */
+#define B5_Tacs	0x0	/* 0 clk */
+#define B5_Tcos	0x0	/* 0 clk */
+#define B5_Tacc	0x7	/* 14 clk */
+#define B5_Tcoh	0x0	/* 0 clk */
+#define B5_Tah	0x0	/* 0 clk */
+#define B5_Tacp	0x0
+#define B5_PMC	0x0	/* normal */
+
+/* Bank6 */
+#define	B6_MT	0x3	/* SDRAM */
+#define	B6_Trcd	0x1	/* 2clk */
+#define	B6_SCAN	0x0	/* 8 bit */
+
+/* Bank7 */
+#define	B7_MT	0x3	/* SDRAM */
+#define	B7_Trcd	0x1	/* 2clk */
+#define	B7_SCAN	0x0	/* 8 bit */
+
+/* refresh parameter */
+#define REFEN	0x1	/* enable refresh */
+#define TREFMD	0x0	/* CBR(CAS before RAS)/auto refresh */
+#define Trp	0x0	/* 2 clk */
+#define Trc	0x3	/* 7 clk */
+#define Tchr	0x2 	/* 3 clk */
+
+#ifdef CONFIG_TRAB_50MHZ
+#define REFCNT	1269	/* period=15.6 us, HCLK=50Mhz, (2048+1-15.6*50) */
+#else
+#define REFCNT	1011	/* period=15.6 us, HCLK=66.5Mhz, (2048+1-15.6*66.5) */
+#endif
+
+
+_TEXT_BASE:
+	.word	TEXT_BASE
+
+.globl memsetup
+memsetup:
+	/* memory control configuration */
+	/* make r0 relative the current location so that it */
+	/* reads SMRDATA out of FLASH rather than memory ! */
+	ldr     r0, =SMRDATA
+	ldr	r1, _TEXT_BASE
+	sub	r0, r0, r1
+	ldr	r1, =BWSCON	/* Bus Width Status Controller */
+	add     r2, r0, #52
+0:
+	ldr     r3, [r0], #4
+	str     r3, [r1], #4
+	cmp     r2, r0
+	bne     0b
+
+	/* everything is fine now */
+	mov	pc, lr
+
+	.ltorg
+/* the literal pools origin */
+
+SMRDATA:
+	.word	0x2211d644	/* d->Ethernet, 6->CPLD, 4->SRAM, 4->FLASH */
+	.word	((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC)) /* GCS0 */
+	.word	((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC)) /* GCS1 */
+	.word	((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC)) /* GCS2 */
+	.word	((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC)) /* GCS3 */
+	.word	((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC)) /* GCS4 */
+	.word	((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC)) /* GCS5 */
+	.word	((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN)) /* GCS6 */
+	.word	((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN)) /* GCS7 */
+	.word	((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
+	.word	0x17	/* BUSWIDTH=32, SCLK power saving mode, BANKSIZE 16M/16M */
+	.word	0x30	/* MRSR6, CL=3clk */
+	.word	0x30	/* MRSR7 */
+