u-boot/board/hidden_dragon/early_init.S
Wolfgang Denk 25ddd1fb0a Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value
CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough.  This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool.  In the result, all definitions of this value can be
deleted from the board config files.  We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-26 21:05:30 +02:00

154 lines
5.6 KiB
ArmAsm

/*
* (C) Copyright 2001
* Thomas Koeller, tkoeller@gmx.net
*
* 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
*/
#ifndef __ASSEMBLY__
#define __ASSEMBLY__ 1
#endif
#include <asm-offsets.h>
#include <config.h>
#include <asm/processor.h>
#include <mpc824x.h>
#include <ppc_asm.tmpl>
#if defined(USE_DINK32)
/* We are running from RAM, so do not clear the MCCR1_MEMGO bit! */
#define MCCR1VAL ((CONFIG_SYS_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CONFIG_SYS_ROMFAL << MCCR1_ROMFAL_SHIFT) | MCCR1_MEMGO)
#else
#define MCCR1VAL (CONFIG_SYS_ROMNAL << MCCR1_ROMNAL_SHIFT) | (CONFIG_SYS_ROMFAL << MCCR1_ROMFAL_SHIFT)
#endif
.text
/* Values to program into memory controller registers */
tbl: .long MCCR1, MCCR1VAL
.long MCCR2, CONFIG_SYS_REFINT << MCCR2_REFINT_SHIFT
.long MCCR3
.long (((CONFIG_SYS_BSTOPRE & 0x000000f0) >> 4) << MCCR3_BSTOPRE2TO5_SHIFT) | \
(CONFIG_SYS_REFREC << MCCR3_REFREC_SHIFT) | \
(CONFIG_SYS_RDLAT << MCCR3_RDLAT_SHIFT)
.long MCCR4
.long (CONFIG_SYS_PRETOACT << MCCR4_PRETOACT_SHIFT) | (CONFIG_SYS_ACTTOPRE << MCCR4_ACTTOPRE_SHIFT) | \
(CONFIG_SYS_REGISTERD_TYPE_BUFFER << 20) | \
(((CONFIG_SYS_BSTOPRE & 0x00000300) >> 8) << MCCR4_BSTOPRE0TO1_SHIFT ) | \
((CONFIG_SYS_SDMODE_CAS_LAT << 4) | (CONFIG_SYS_SDMODE_WRAP << 3) | \
(CONFIG_SYS_SDMODE_BURSTLEN) << MCCR4_SDMODE_SHIFT) | \
(CONFIG_SYS_ACTTORW << MCCR4_ACTTORW_SHIFT) | \
((CONFIG_SYS_BSTOPRE & 0x0000000f) << MCCR4_BSTOPRE6TO9_SHIFT )
.long MSAR1
.long (((CONFIG_SYS_BANK0_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK1_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK2_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK3_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
.long EMSAR1
.long (((CONFIG_SYS_BANK0_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK1_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK2_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK3_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
.long MSAR2
.long (((CONFIG_SYS_BANK4_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK5_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK6_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK7_START & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
.long EMSAR2
.long (((CONFIG_SYS_BANK4_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK5_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK6_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK7_START & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
.long MEAR1
.long (((CONFIG_SYS_BANK0_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK1_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK2_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK3_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
.long EMEAR1
.long (((CONFIG_SYS_BANK0_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK1_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK2_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK3_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
.long MEAR2
.long (((CONFIG_SYS_BANK4_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK5_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK6_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK7_END & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT) << 24)
.long EMEAR2
.long (((CONFIG_SYS_BANK4_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 0) | \
(((CONFIG_SYS_BANK5_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 8) | \
(((CONFIG_SYS_BANK6_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 16) | \
(((CONFIG_SYS_BANK7_END & MICR_EADDR_MASK) >> MICR_EADDR_SHIFT) << 24)
.long 0
/*
* Early CPU initialization. Set up memory controller, so we can access any RAM at all. This
* must be done in assembly, since we have no stack at this point.
*/
.global early_init_f
early_init_f:
mflr r10
/* basic memory controller configuration */
lis r3, CONFIG_ADDR_HIGH
lis r4, CONFIG_DATA_HIGH
bl lab
lab: mflr r5
lwzu r0, tbl - lab(r5)
loop: lwz r1, 4(r5)
stwbrx r0, 0, r3
eieio
stwbrx r1, 0, r4
eieio
lwzu r0, 8(r5)
cmpli cr0, 0, r0, 0
bne cr0, loop
/* set bank enable bits */
lis r0, MBER@h
ori r0, 0, MBER@l
li r1, CONFIG_SYS_BANK_ENABLE
stwbrx r0, 0, r3
eieio
stb r1, 0(r4)
eieio
/* delay loop */
lis r0, 0x0003
mtctr r0
delay: bdnz delay
/* enable memory controller */
lis r0, MCCR1@h
ori r0, 0, MCCR1@l
stwbrx r0, 0, r3
eieio
lwbrx r0, 0, r4
oris r0, 0, MCCR1_MEMGO@h
stwbrx r0, 0, r4
eieio
/* set up stack pointer */
lis r1, CONFIG_SYS_INIT_SP_OFFSET@h
ori r1, r1, CONFIG_SYS_INIT_SP_OFFSET@l
mtlr r10
blr