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author | wdenk <wdenk> | 2005-04-02 23:52:25 +0000 |
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committer | wdenk <wdenk> | 2005-04-02 23:52:25 +0000 |
commit | 400558b561e2bdb47f87b96b3510dda0881a3662 (patch) | |
tree | 479fa3918e0031a95cdac9468cb8396e1f1a9b60 /board/dnp1110/lowlevel_init.S | |
parent | 414eec35e3832f4f9ce8a25ace7ead638be1f76f (diff) | |
download | u-boot-imx-400558b561e2bdb47f87b96b3510dda0881a3662.zip u-boot-imx-400558b561e2bdb47f87b96b3510dda0881a3662.tar.gz u-boot-imx-400558b561e2bdb47f87b96b3510dda0881a3662.tar.bz2 |
Prepare for SoC rework of ARM code:
- rename CONFIG_BOOTBINFUNC into CONFIG_INIT_CRITICAL
- rename memsetup into lowlevel_init (function name and source files)
Diffstat (limited to 'board/dnp1110/lowlevel_init.S')
-rw-r--r-- | board/dnp1110/lowlevel_init.S | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/board/dnp1110/lowlevel_init.S b/board/dnp1110/lowlevel_init.S new file mode 100644 index 0000000..7730be3 --- /dev/null +++ b/board/dnp1110/lowlevel_init.S @@ -0,0 +1,135 @@ +/* + * 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) + * + * 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 */ + +MEM_BASE: .long 0xa0000000 +MEM_START: .long 0xc0000000 + +#define MDCNFG 0x00 +#define MDCAS00 0x04 /* CAS waveform rotate reg 0 */ +#define MDCAS01 0x08 /* CAS waveform rotate reg 1 bank */ +#define MDCAS02 0x0C /* CAS waveform rotate reg 2 bank */ +#define MDREFR 0x1C /* DRAM refresh control reg */ +#define MDCAS20 0x20 /* CAS waveform rotate reg 0 bank */ +#define MDCAS21 0x24 /* CAS waveform rotate reg 1 bank */ +#define MDCAS22 0x28 /* CAS waveform rotate reg 2 bank */ +#define MECR 0x18 /* Expansion memory (PCMCIA) bus configuration register */ +#define MSC0 0x10 /* static memory control reg 0 */ +#define MSC1 0x14 /* static memory control reg 1 */ +#define MSC2 0x2C /* static memory control reg 2 */ +#define SMCNFG 0x30 /* SMROM configuration reg */ + +mdcas00: .long 0x5555557F +mdcas01: .long 0x55555555 +mdcas02: .long 0x55555555 +mdcas20: .long 0x5555557F +mdcas21: .long 0x55555555 +mdcas22: .long 0x55555555 +mdcnfg: .long 0x0000B25C +mdrefr: .long 0x007000C1 +mecr: .long 0x10841084 +msc0: .long 0x00004774 +msc1: .long 0x00000000 +msc2: .long 0x00000000 +smcnfg: .long 0x00000000 + +/* setting up the memory */ + +.globl lowlevel_init +lowlevel_init: + + ldr r0, MEM_BASE + + /* Set up the DRAM */ + + /* MDCAS00 */ + ldr r1, mdcas00 + str r1, [r0, #MDCAS00] + + /* MDCAS01 */ + ldr r1, mdcas01 + str r1, [r0, #MDCAS01] + + /* MDCAS02 */ + ldr r1, mdcas02 + str r1, [r0, #MDCAS02] + + /* MDCAS20 */ + ldr r1, mdcas20 + str r1, [r0, #MDCAS20] + + /* MDCAS21 */ + ldr r1, mdcas21 + str r1, [r0, #MDCAS21] + + /* MDCAS22 */ + ldr r1, mdcas22 + str r1, [r0, #MDCAS22] + + /* MDREFR */ + ldr r1, mdrefr + str r1, [r0, #MDREFR] + + /* Set up PCMCIA space */ + ldr r1, mecr + str r1, [r0, #MECR] + + /* Setup the flash memory and other */ + ldr r1, msc0 + str r1, [r0, #MSC0] + + ldr r1, msc1 + str r1, [r0, #MSC1] + + ldr r1, msc2 + str r1, [r0, #MSC2] + + ldr r1, smcnfg + str r1, [r0, #SMCNFG] + + /* MDCNFG */ + ldr r1, mdcnfg + bic r1, r1, #0x00000001 + str r1, [r0, #MDCNFG] + + /* Load something to activate bank */ + ldr r2, MEM_START +.rept 8 + ldr r1, [r2] +.endr + + /* MDCNFG */ + ldr r1, mdcnfg + orr r1, r1, #0x00000001 + str r1, [r0, #MDCNFG] + + /* everything is fine now */ + mov pc, lr |