[people/ms/u-boot.git] / board / smdk2410 / memsetup.S

/*
 * 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 Samsung SMDK2410 by
 * (C) Copyright 2002
 * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
 *
 * 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 */

/*
 *
 * Taken from linux/arch/arm/boot/compressed/head-s3c2410.S
 *
 * Copyright (C) 2002 Samsung Electronics SW.LEE  <hitchcar@sec.samsung.com>
 *
 */

#define BWSCON	0x48000000

/* BWSCON */
#define DW8		 	(0x0)
#define DW16		 	(0x1)
#define DW32		 	(0x2)
#define WAIT		 	(0x1<<2)
#define UBLB		 	(0x1<<3)

#define B1_BWSCON	  	(DW32)
#define B2_BWSCON	  	(DW16)
#define B3_BWSCON	  	(DW16 + WAIT + UBLB)
#define B4_BWSCON	  	(DW16)
#define B5_BWSCON	  	(DW16)
#define B6_BWSCON	  	(DW32)
#define B7_BWSCON	  	(DW32)

/* BANK0CON */
#define B0_Tacs		 	0x0	/*  0clk */
#define B0_Tcos		 	0x0	/*  0clk */
#define B0_Tacc		 	0x7	/* 14clk */
#define B0_Tcoh		 	0x0	/*  0clk */
#define B0_Tah		 	0x0	/*  0clk */
#define B0_Tacp		 	0x0
#define B0_PMC		 	0x0	/* normal */

/* BANK1CON */
#define B1_Tacs		 	0x0	/*  0clk */
#define B1_Tcos		 	0x0	/*  0clk */
#define B1_Tacc		 	0x7	/* 14clk */
#define B1_Tcoh		 	0x0	/*  0clk */
#define B1_Tah		 	0x0	/*  0clk */
#define B1_Tacp		 	0x0
#define B1_PMC		 	0x0

#define B2_Tacs		 	0x0
#define B2_Tcos		 	0x0
#define B2_Tacc		 	0x7
#define B2_Tcoh		 	0x0
#define B2_Tah		 	0x0
#define B2_Tacp		 	0x0
#define B2_PMC		 	0x0

#define B3_Tacs		 	0x0	/*  0clk */
#define B3_Tcos		 	0x3	/*  4clk */
#define B3_Tacc		 	0x7	/* 14clk */
#define B3_Tcoh		 	0x1	/*  1clk */
#define B3_Tah		 	0x0	/*  0clk */
#define B3_Tacp		 	0x3     /*  6clk */
#define B3_PMC		 	0x0	/* normal */

#define B4_Tacs		 	0x0	/*  0clk */
#define B4_Tcos		 	0x0	/*  0clk */
#define B4_Tacc		 	0x7	/* 14clk */
#define B4_Tcoh		 	0x0	/*  0clk */
#define B4_Tah		 	0x0	/*  0clk */
#define B4_Tacp		 	0x0
#define B4_PMC		 	0x0	/* normal */

#define B5_Tacs		 	0x0	/*  0clk */
#define B5_Tcos		 	0x0	/*  0clk */
#define B5_Tacc		 	0x7	/* 14clk */
#define B5_Tcoh		 	0x0	/*  0clk */
#define B5_Tah		 	0x0	/*  0clk */
#define B5_Tacp		 	0x0
#define B5_PMC		 	0x0	/* normal */

#define B6_MT		 	0x3	/* SDRAM */
#define B6_Trcd	 	 	0x1
#define B6_SCAN		 	0x1	/* 9bit */

#define B7_MT		 	0x3	/* SDRAM */
#define B7_Trcd		 	0x1	/* 3clk */
#define B7_SCAN		 	0x1	/* 9bit */

/* REFRESH parameter */
#define REFEN		 	0x1	/* Refresh enable */
#define TREFMD		 	0x0	/* CBR(CAS before RAS)/Auto refresh */
#define Trp		 	0x0	/* 2clk */
#define Trc		 	0x3	/* 7clk */
#define Tchr		 	0x2	/* 3clk */
#define REFCNT		 	1113	/* period=15.6us, HCLK=60Mhz, (2048+1-15.6*60) */
/**************************************/

_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, #13*4
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 (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
    .word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))
    .word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))
    .word ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC))
    .word ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC))
    .word ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC))
    .word ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC))
    .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
    .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
    .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
    .word 0x32
    .word 0x30
    .word 0x30
Commit	Line	Data
43c377fc WD	1	/*
	2	* Memory Setup stuff - taken from blob memsetup.S
	3	*
	4	* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
	5	* Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
	6	*
	7	* Modified for the Samsung SMDK2410 by
	8	* (C) Copyright 2002
	9	* David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
	10	*
	11	* See file CREDITS for list of people who contributed to this
	12	* project.
	13	*
	14	* This program is free software; you can redistribute it and/or
	15	* modify it under the terms of the GNU General Public License as
	16	* published by the Free Software Foundation; either version 2 of
	17	* the License, or (at your option) any later version.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	27	* MA 02111-1307 USA
	28	*/
	29
	30
43c377fc WD	31	#include <config.h>
	32	#include <version.h>
	33
	34
	35	/* some parameters for the board */
	36
	37	/*
	38	*
	39	* Taken from linux/arch/arm/boot/compressed/head-s3c2410.S
	40	*
	41	* Copyright (C) 2002 Samsung Electronics SW.LEE <hitchcar@sec.samsung.com>
	42	*
	43	*/
	44
	45	#define BWSCON 0x48000000
	46
	47	/* BWSCON */
	48	#define DW8 (0x0)
	49	#define DW16 (0x1)
	50	#define DW32 (0x2)
	51	#define WAIT (0x1<<2)
	52	#define UBLB (0x1<<3)
	53
	54	#define B1_BWSCON (DW32)
	55	#define B2_BWSCON (DW16)
	56	#define B3_BWSCON (DW16 + WAIT + UBLB)
	57	#define B4_BWSCON (DW16)
	58	#define B5_BWSCON (DW16)
	59	#define B6_BWSCON (DW32)
	60	#define B7_BWSCON (DW32)
	61
	62	/* BANK0CON */
	63	#define B0_Tacs 0x0 /* 0clk */
	64	#define B0_Tcos 0x0 /* 0clk */
	65	#define B0_Tacc 0x7 /* 14clk */
	66	#define B0_Tcoh 0x0 /* 0clk */
	67	#define B0_Tah 0x0 /* 0clk */
	68	#define B0_Tacp 0x0
	69	#define B0_PMC 0x0 /* normal */
	70
	71	/* BANK1CON */
	72	#define B1_Tacs 0x0 /* 0clk */
	73	#define B1_Tcos 0x0 /* 0clk */
	74	#define B1_Tacc 0x7 /* 14clk */
	75	#define B1_Tcoh 0x0 /* 0clk */
	76	#define B1_Tah 0x0 /* 0clk */
	77	#define B1_Tacp 0x0
	78	#define B1_PMC 0x0
	79
	80	#define B2_Tacs 0x0
	81	#define B2_Tcos 0x0
	82	#define B2_Tacc 0x7
	83	#define B2_Tcoh 0x0
	84	#define B2_Tah 0x0
	85	#define B2_Tacp 0x0
	86	#define B2_PMC 0x0
	87
	88	#define B3_Tacs 0x0 /* 0clk */
	89	#define B3_Tcos 0x3 /* 4clk */
	90	#define B3_Tacc 0x7 /* 14clk */
	91	#define B3_Tcoh 0x1 /* 1clk */
	92	#define B3_Tah 0x0 /* 0clk */
	93	#define B3_Tacp 0x3 /* 6clk */
	94	#define B3_PMC 0x0 /* normal */
95
96	#define B4_Tacs 0x0 /* 0clk */
97	#define B4_Tcos 0x0 /* 0clk */
98	#define B4_Tacc 0x7 /* 14clk */
99	#define B4_Tcoh 0x0 /* 0clk */
100	#define B4_Tah 0x0 /* 0clk */
101	#define B4_Tacp 0x0
102	#define B4_PMC 0x0 /* normal */
103
104	#define B5_Tacs 0x0 /* 0clk */
105	#define B5_Tcos 0x0 /* 0clk */
106	#define B5_Tacc 0x7 /* 14clk */
107	#define B5_Tcoh 0x0 /* 0clk */
108	#define B5_Tah 0x0 /* 0clk */
109	#define B5_Tacp 0x0
110	#define B5_PMC 0x0 /* normal */
111
112	#define B6_MT 0x3 /* SDRAM */
113	#define B6_Trcd 0x1
114	#define B6_SCAN 0x1 /* 9bit */
115
116	#define B7_MT 0x3 /* SDRAM */
117	#define B7_Trcd 0x1 /* 3clk */
118	#define B7_SCAN 0x1 /* 9bit */
119
120	/* REFRESH parameter */
121	#define REFEN 0x1 /* Refresh enable */
122	#define TREFMD 0x0 /* CBR(CAS before RAS)/Auto refresh */
123	#define Trp 0x0 /* 2clk */
124	#define Trc 0x3 /* 7clk */
125	#define Tchr 0x2 /* 3clk */
126	#define REFCNT 1113 /* period=15.6us, HCLK=60Mhz, (2048+1-15.660) /
127	/**************************************/
128
129	_TEXT_BASE:
130	.word TEXT_BASE
131
132	.globl memsetup
133	memsetup:
134	/* memory control configuration */
135	/* make r0 relative the current location so that it */
136	/* reads SMRDATA out of FLASH rather than memory ! */
137	ldr r0, =SMRDATA
138	ldr r1, _TEXT_BASE
139	sub r0, r0, r1
140	ldr r1, =BWSCON /* Bus Width Status Controller */
141	add r2, r0, #13*4
142	0:
143	ldr r3, [r0], #4
144	str r3, [r1], #4
145	cmp r2, r0
146	bne 0b
147
148	/* everything is fine now */
149	mov pc, lr
150
151	.ltorg
152	/* the literal pools origin */
153
154	SMRDATA:
155	.word (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
156	.word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))
157	.word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))
158	.word ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC))
159	.word ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC))
160	.word ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC))
161	.word ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC))
162	.word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
163	.word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
164	.word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
165	.word 0x32
166	.word 0x30
167	.word 0x30