/* * 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, * * 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 #include #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 SMC_CSR0 0xFFFFFF70 #define SMC_CSR0_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 SMC_CSR0 .word SMC_CSR0_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 */