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Diffstat (limited to 'board/trab/lowlevel_init.S')
| -rw-r--r-- | board/trab/lowlevel_init.S | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/board/trab/lowlevel_init.S b/board/trab/lowlevel_init.S deleted file mode 100644 index 3cef414..0000000 --- a/board/trab/lowlevel_init.S +++ /dev/null @@ -1,182 +0,0 @@ -/* - * 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 2002-2003 - * 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> - - -/* 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 0x1 /* 1 clk */ -#define B0_Tcos 0x1 /* 1 clk */ -#define B0_Tacc 0x5 /* 8 clk */ -#define B0_Tcoh 0x1 /* 1 clk */ -#define B0_Tah 0x1 /* 1 clk */ -#define B0_Tacp 0x0 -#define B0_PMC 0x0 /* normal */ - -/* Bank1 - SRAM */ -#define B1_Tacs 0x1 /* 1 clk */ -#define B1_Tcos 0x1 /* 1 clk */ -#define B1_Tacc 0x5 /* 8 clk */ -#define B1_Tcoh 0x1 /* 1 clk */ -#define B1_Tah 0x1 /* 1 clk */ -#define B1_Tacp 0x0 -#define B1_PMC 0x0 /* normal */ - -/* Bank2 - CPLD */ -#define B2_Tacs 0x1 /* 1 clk */ -#define B2_Tcos 0x1 /* 1 clk */ -#define B2_Tacc 0x5 /* 8 clk */ -#define B2_Tcoh 0x1 /* 1 clk */ -#define B2_Tah 0x1 /* 1 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 */ - -#ifndef CONFIG_RAM_16MB /* 32 MB RAM */ -/* Bank6 */ -#define B6_MT 0x3 /* SDRAM */ -#define B6_Trcd 0x0 /* 2clk */ -#define B6_SCAN 0x1 /* 9 bit */ - -/* Bank7 */ -#define B7_MT 0x3 /* SDRAM */ -#define B7_Trcd 0x0 /* 2clk */ -#define B7_SCAN 0x1 /* 9 bit */ -#else /* CONFIG_RAM_16MB = 16 MB RAM */ -/* 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 */ -#endif /* CONFIG_RAM_16MB */ - -/* 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 CONFIG_SYS_TEXT_BASE - -.globl lowlevel_init -lowlevel_init: - /* 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) -#ifndef CONFIG_RAM_16MB /* 32 MB RAM */ - .word 0x10 /* BUSWIDTH=32, SCLK power saving mode, BANKSIZE 32M/32M */ -#else /* CONFIG_RAM_16MB = 16 MB RAM */ - .word 0x17 /* BUSWIDTH=32, SCLK power saving mode, BANKSIZE 16M/16M */ -#endif /* CONFIG_RAM_16MB */ - .word 0x20 /* MRSR6, CL=2clk */ - .word 0x20 /* MRSR7 */ |