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/*
* 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 at91rm9200dk board by
* (C) Copyright 2004
* Gary Jennejohn, DENX Software Engineering, <garyj@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>
#ifdef CONFIG_BOOTBINFUNC
/*
* some parameters for the board
*
* This is based on rm9200dk.cfg for the BDI2000 from ABATRON which in
* turn is based on the boot.bin code from ATMEL
*
*/
/* flash */
#define MC_PUIA 0xFFFFFF10
#define MC_PUIA_VAL 0x00000000
#define MC_PUP 0xFFFFFF50
#define MC_PUP_VAL 0x00000000
#define MC_PUER 0xFFFFFF54
#define MC_PUER_VAL 0x00000000
#define MC_ASR 0xFFFFFF04
#define MC_ASR_VAL 0x00000000
#define MC_AASR 0xFFFFFF08
#define MC_AASR_VAL 0x00000000
#define EBI_CFGR 0xFFFFFF64
#define EBI_CFGR_VAL 0x00000000
#define SMC2_CSR 0xFFFFFF70
#define SMC2_CSR_VAL 0x00003284 /* 16bit, 2 TDF, 4 WS */
/* clocks */
#define PLLAR 0xFFFFFC28
#define PLLAR_VAL 0x20263E04 /* 179.712000 MHz for PCK */
#define PLLBR 0xFFFFFC2C
#define PLLBR_VAL 0x10483E0E /* 48.054857 MHz (divider by 2 for USB) */
#define MCKR 0xFFFFFC30
/* PCK/3 = MCK Master Clock = 59.904000MHz from PLLA */
#define MCKR_VAL 0x00000202
/* sdram */
#define PIOC_ASR 0xFFFFF870
#define PIOC_ASR_VAL 0xFFFF0000 /* Configure PIOC as Perip (D16/D31) */
#define PIOC_BSR 0xFFFFF874
#define PIOC_BSR_VAL 0x00000000
#define PIOC_PDR 0xFFFFF804
#define PIOC_PDR_VAL 0xFFFF0000
#define EBI_CSA 0xFFFFFF60
#define EBI_CSA_VAL 0x00000002 /* CS1=SDRAM */
#define SDRC_CR 0xFFFFFF98
#define SDRC_CR_VAL 0x2188c155 /* set up the SDRAM */
#define SDRAM 0x20000000 /* address of the SDRAM */
#define SDRAM1 0x20000080 /* address of the SDRAM */
#define SDRAM_VAL 0x00000000 /* value written to SDRAM */
#define SDRC_MR 0xFFFFFF90
#define SDRC_MR_VAL 0x00000002 /* Precharge All */
#define SDRC_MR_VAL1 0x00000004 /* refresh */
#define SDRC_MR_VAL2 0x00000003 /* Load Mode Register */
#define SDRC_MR_VAL3 0x00000000 /* Normal Mode */
#define SDRC_TR 0xFFFFFF94
#define SDRC_TR_VAL 0x000002E0 /* Write refresh rate */
_TEXT_BASE:
.word TEXT_BASE
.globl lowlevelinit
lowlevelinit:
/* memory control configuration */
/* this isn't very elegant, but what the heck */
ldr r0, =SMRDATA
ldr r1, _TEXT_BASE
sub r0, r0, r1
add r2, r0, #80
0:
/* the address */
ldr r1, [r0], #4
/* the value */
ldr r3, [r0], #4
str r3, [r1]
cmp r2, r0
bne 0b
/* delay - this is all done by guess */
ldr r0, =0x00010000
1:
subs r0, r0, #1
bhi 1b
ldr r0, =SMRDATA1
ldr r1, _TEXT_BASE
sub r0, r0, r1
add r2, r0, #176
2:
/* the address */
ldr r1, [r0], #4
/* the value */
ldr r3, [r0], #4
str r3, [r1]
cmp r2, r0
bne 2b
/* everything is fine now */
mov pc, lr
.ltorg
SMRDATA:
.word MC_PUIA
.word MC_PUIA_VAL
.word MC_PUP
.word MC_PUP_VAL
.word MC_PUER
.word MC_PUER_VAL
.word MC_ASR
.word MC_ASR_VAL
.word MC_AASR
.word MC_AASR_VAL
.word EBI_CFGR
.word EBI_CFGR_VAL
.word SMC2_CSR
.word SMC2_CSR_VAL
.word PLLAR
.word PLLAR_VAL
.word PLLBR
.word PLLBR_VAL
.word MCKR
.word MCKR_VAL
/* SMRDATA is 80 bytes long */
/* here there's a delay of 100 */
SMRDATA1:
.word PIOC_ASR
.word PIOC_ASR_VAL
.word PIOC_BSR
.word PIOC_BSR_VAL
.word PIOC_PDR
.word PIOC_PDR_VAL
.word EBI_CSA
.word EBI_CSA_VAL
.word SDRC_CR
.word SDRC_CR_VAL
.word SDRC_MR
.word SDRC_MR_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRC_MR
.word SDRC_MR_VAL1
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRC_MR
.word SDRC_MR_VAL2
.word SDRAM1
.word SDRAM_VAL
.word SDRC_TR
.word SDRC_TR_VAL
.word SDRAM
.word SDRAM_VAL
.word SDRC_MR
.word SDRC_MR_VAL3
.word SDRAM
.word SDRAM_VAL
/* SMRDATA1 is 176 bytes long */
#endif /* CONFIG_BOOTBINFUNC */
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