From 8ee8e9fb170bdc6c072d3e944633a303fc1a8b2a Mon Sep 17 00:00:00 2001 From: wdenk Date: Sat, 20 Jul 2002 10:56:28 +0000 Subject: [PATCH] Das U-Boot: Universal Boot Loader --- board/ep7312/memsetup.S | 97 ++++++++++++++++++++++ board/impa7/memsetup.S | 87 ++++++++++++++++++++ board/smdk2410/memsetup.S | 168 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 352 insertions(+) create mode 100644 board/ep7312/memsetup.S create mode 100644 board/impa7/memsetup.S create mode 100644 board/smdk2410/memsetup.S diff --git a/board/ep7312/memsetup.S b/board/ep7312/memsetup.S new file mode 100644 index 0000000000..dca1ed455d --- /dev/null +++ b/board/ep7312/memsetup.S @@ -0,0 +1,97 @@ +/* + * Memory Setup stuff - taken from ??? + * + * 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 + + +/* some parameters for the board */ + +SYSCON1: .long 0x80000100 +SYSCON2: .long 0x80001100 +SYSCON3: .long 0x80002200 +MEMCFG1: .long 0x80000180 +MEMCFG2: .long 0x800001C0 +SDCONF: .long 0x80002300 +SDRFPR: .long 0x80002340 + +syscon1_val: .long 0x00040100 +syscon2_val: .long 0x00000102 +syscon3_val: .long 0x0000020E +memcfg1_val: .long 0x1f101710 +memcfg2_mask: .long 0x0000ffff @ only set lower 16 bits +memcfg2_val: .long 0x00001f13 @ upper 16 bits are reserved for CS7 + CS6 +sdrfpr_val: .long 0x00000240 +sdconf_val: .long 0x00000522 +/* setting up the memory */ + +.globl memsetup +memsetup: + /* + * SYSCON1-3 + */ + ldr r0, SYSCON1 + ldr r1, syscon1_val + str r1, [r0] + + ldr r0, SYSCON2 + ldr r1, syscon2_val + str r1, [r0] + + ldr r0, SYSCON3 + ldr r1, syscon3_val + str r1, [r0] + + /* + * MEMCFG1 + */ + ldr r0, MEMCFG1 + ldr r1, memcfg1_val + str r1, [r0] + + /* + * MEMCFG2 + */ + ldr r0, MEMCFG2 + ldr r2, [r0] + ldr r1, memcfg2_mask + bic r2, r2, r1 + ldr r1, memcfg2_val + orr r2, r2, r1 + str r2, [r0] + + /* + * SDRFPR,SDCONF + */ + ldr r0, SDCONF + ldr r1, sdconf_val + str r1, [r0] + + ldr r0, SDRFPR + ldr r1, sdrfpr_val + str r1, [r0] + + /* everything is fine now */ + mov pc, lr + diff --git a/board/impa7/memsetup.S b/board/impa7/memsetup.S new file mode 100644 index 0000000000..d1d1a57000 --- /dev/null +++ b/board/impa7/memsetup.S @@ -0,0 +1,87 @@ +/* + * Memory Setup stuff - taken from ??? + * + * 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 + + +/* some parameters for the board */ + +SYSCON2: .long 0x80001100 +MEMCFG1: .long 0x80000180 +MEMCFG2: .long 0x800001C0 +DRFPR: .long 0x80000200 + +syscon2_mask: .long 0x00000004 +memcfg1_val: .long 0x160c1414 +memcfg2_mask: .long 0x0000ffff @ only set lower 16 bits +memcfg2_val: .long 0x00000000 @ upper 16 bits are reserved for CS7 + CS6 +drfpr_val: .long 0x00000081 +/* setting up the memory */ + +.globl memsetup +memsetup: + /* + * DRFPR + * 64kHz DRAM refresh + */ + ldr r0, DRFPR + ldr r1, drfpr_val + str r1, [r0] + + /* + * SYSCON2: clear bit 2, DRAM is 32 bits wide + */ + ldr r0, SYSCON2 + ldr r2, [r0] + ldr r1, syscon2_mask + bic r2, r2, r1 + str r2, [r0] + + /* + * MEMCFG1 + * Setting up Keyboard at CS3, 8 Bit, 3 Waitstates + * Setting up CS8900 (Ethernet) at CS2, 32 Bit, 5 Waitstates + * Setting up flash at CS0 and CS1, 32 Bit, 3 Waitstates + */ + ldr r0, MEMCFG1 + ldr r1, memcfg1_val + str r1, [r0] + + /* + * MEMCFG2 + * Setting up ? with 0 + * + */ + ldr r0, MEMCFG2 + ldr r2, [r0] + ldr r1, memcfg2_mask + bic r2, r2, r1 + ldr r1, memcfg2_val + orr r2, r2, r1 + str r2, [r0] + + /* everything is fine now */ + mov pc, lr + diff --git a/board/smdk2410/memsetup.S b/board/smdk2410/memsetup.S new file mode 100644 index 0000000000..3a84be5a4b --- /dev/null +++ b/board/smdk2410/memsetup.S @@ -0,0 +1,168 @@ +/* + * 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, + * + * 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 + + +/* some parameters for the board */ + +/* + * + * Taken from linux/arch/arm/boot/compressed/head-s3c2410.S + * + * Copyright (C) 2002 Samsung Electronics SW.LEE + * + */ + +#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 -- 2.39.5