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Add ARM946E cpu and core module targets; remap memory to 0x00000000

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Patch by Peter Pearse, 2 Feb 2005
This commit is contained in:
Wolfgang Denk 2005-09-25 01:48:28 +02:00
parent e2146b6aea
commit 74f4304ee7
30 changed files with 2666 additions and 80 deletions
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3
CHANGELOG
View file

@ -2,6 +2,9 @@
Changes for U-Boot 1.1.4:
======================================================================
* Add ARM946E cpu and core module targets; remap memory to 0x00000000
Patch by Peter Pearse, 2 Feb 2005
* Fix error handling in tools/env/fw_env.c
Patch by Ara Avanesyan, 01 Feb 2005

32
MAKEALL
View file

@ -160,24 +160,44 @@ LIST_SA="assabet dnp1110 gcplus lart shannon"
## ARM7 Systems
#########################################################################
LIST_ARM7="B2 ep7312 evb4510 impa7 modnet50"
LIST_ARM7=" \
B2 ep7312 evb4510 impa7 \
integratorap_CM720T integratorap_CM7TDMI \
modnet50 \
"
#########################################################################
## ARM9 Systems
#########################################################################
LIST_ARM9=" \
at91rm9200dk cmc_pu2 integratorcp integratorap \
at91rm9200dk cmc_pu2 \
integratorap_CM920T integratorap_CM920T_ETM \
integratorap_CM922T_XA10 integratorap_CM926EJ_S \
integratorap_CM940T integratorap_CM946E_S \
integratorap_CM966E_S integratorcp_CM920T \
integratorcp_CM920T_ETM integratorcp_CM922T_XA10 \
integratorcp_CM926EJ_S integratorcp_CM940T \
integratorcp_CM946E_S integratorcp_CM966E_S \
lpd7a400 mx1ads mx1fs2 omap1510inn \
omap1610h2 omap1610inn omap730p2 scb9328 \
smdk2400 smdk2410 trab VCMA9 \
versatile voiceblue \
"
#########################################################################
## ARM10 Systems
#########################################################################
LIST_ARM10=" \
integratorcp_CM10220E integratorcp_CM1026EJ_S \
"
#########################################################################
## ARM11 Systems
#########################################################################
LIST_ARM11="omap2420h4"
LIST_ARM11=" \
integratorcp_CM1136JF_S omap2420h4 \
"
#########################################################################
## Xscale Systems
@ -186,7 +206,7 @@ LIST_ARM11="omap2420h4"
LIST_pxa=" \
adsvix cerf250 cradle csb226 \
innokom lubbock wepep250 xaeniax \
xm250 xsengine \
xm250 xsengine \
"
LIST_ixp="ixdp425"
@ -194,7 +214,7 @@ LIST_ixp="ixdp425"
LIST_arm=" \
${LIST_SA} \
${LIST_ARM7} ${LIST_ARM9} ${LIST_ARM11} \
${LIST_ARM7} ${LIST_ARM9} ${LIST_ARM10} ${LIST_ARM11} \
${LIST_pxa} ${LIST_ixp} \
"
@ -276,7 +296,7 @@ for arg in $@
do
case "$arg" in
ppc|5xx|5xxx|8xx|8220|824x|8260|83xx|85xx|4xx|7xx|74xx| \
arm|SA|ARM7|ARM9|ARM11|pxa|ixp| \
arm|SA|ARM7|ARM9|ARM10|ARM11|pxa|ixp| \
microblaze| \
mips|mips_el| \
nios|nios2| \

175
Makefile
View file

@ -1387,11 +1387,178 @@ at91rm9200dk_config : unconfig
cmc_pu2_config : unconfig
@./mkconfig $(@:_config=) arm arm920t cmc_pu2 NULL at91rm9200
integratorap_config : unconfig
@./mkconfig $(@:_config=) arm arm926ejs integratorap
########################################################################
## ARM Integrator boards
## There are two variants /AP && /CP
## - many different core modules (CMs) can be used
## - some share characteristics
## Those without specific cpu support can still use U-Boot
## provided the ARM boot monitor (or similar) runs before U-Boot
## to set up the platform e.g. map writeable memory to 0x00000000
## setup MMU, setup caches etc.
## Ported cores are:-
## ARM926EJ-S
## ARM946E-S
##
########################################################################
xtract_int_board = $(subst _$(subst integrator$1_,,$(subst _config,,$2)),,$(subst _config,,$2))
xtract_int_cm = $(subst integrator$1_,,$(subst _config,,$2))
#########################################################################
## Integrator/AP
#########################################################################
integratorap_config : unconfig
@echo -n "/* Integrator configuration implied " > tmp.fil; \
echo " by Makefile target */" >> tmp.fil; \
echo >> tmp.fil
@echo -n "#define CONFIG_INTEGRATOR 1" >> tmp.fil; \
echo " /* Integrator board */" >> tmp.fil; \
echo -n "#define CONFIG_ARCH_INTEGRATOR" >> tmp.fil; \
echo " 1 /* Integrator/AP */" >> tmp.fil; \
echo "/* Core module not defined */" >> tmp.fil; \
echo -n "#define CONFIG_ARM_INTCM 1" >> tmp.fil; \
echo -n " /* Integrator core module " >> tmp.fil; \
echo "with unknown core */" >> tmp.fil; \
cpu=arm_intcm; \
mv tmp.fil ./include/config.h; \
ubootlds=board/integratorap/u-boot.lds; \
sed -e 's/cpu\/.*\/st/cpu\/'$$cpu'\/st/' \
$$ubootlds > $$ubootlds.tmp; \
mv -f $$ubootlds.tmp $$ubootlds; \
./mkconfig -a integratorap arm arm_intcm integratorap;
integratorcp_config : unconfig
@./mkconfig $(@:_config=) arm arm926ejs integratorcp
integratorap_CM720T_config integratorap_CM7TDMI_config \
integratorap_CM920T_config integratorap_CM920T_ETM_config \
integratorap_CM922T_XA10_config integratorap_CM926EJ_S_config \
integratorap_CM940T_config integratorap_CM946E_S_config \
integratorap_CM966E_S_config integratorap_CM10200E_config \
integratorap_CM10220E_config integratorap_CM1026EJ_S_config \
integratorap_CM1136JF_S_config : unconfig
@echo -n "/* Integrator configuration implied " > tmp.fil; \
echo " by Makefile target */" >> tmp.fil; \
echo >> tmp.fil
@echo -n "#define CONFIG_INTEGRATOR 1" >> tmp.fil; \
echo " /* Integrator board */" >> tmp.fil; \
echo -n "#define CONFIG_ARCH_INTEGRATOR" >> tmp.fil; \
echo " 1 /* Integrator/AP */" >> tmp.fil; \
cm=$(call xtract_int_cm,ap,$@); \
echo -n "#define CONFIG_$$cm " >> tmp.fil; \
echo " /* core module */" >> tmp.fil; \
case $$cm in \
CM920T) \
echo -n "#define CONFIG_ARM920" >> tmp.fil; \
echo -n "T 1 /* CPU" >> tmp.fil; \
echo -n " core is ARM920T" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm920t;; \
CM926EJ_S) echo -n "#define CONFIG_ARM926" >> tmp.fil; \
echo -n "EJ_S 1 /* CPU" >> tmp.fil; \
echo -n " core is ARM926EJ-S" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm926ejs;; \
CM946E_S) echo -n "#define CONFIG_ARM946" >> tmp.fil; \
echo -n "E_S 1 /* CPU" >> tmp.fil; \
echo -n " core is ARM946E-S" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm946es;; \
*) echo -n "#define CONFIG_ARM_IN" >> tmp.fil; \
echo -n "TCM 1 /* Int" >> tmp.fil; \
echo -n "egrator core module w" >> tmp.fil; \
echo -n "ith unported core" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm_intcm;; \
esac; \
mv tmp.fil ./include/config.h; \
ubootlds=board/$(call xtract_int_board,ap,$@)/u-boot.lds; \
sed -e 's/cpu\/.*\/st/cpu\/'$$cpu'\/st/' \
$$ubootlds > $$ubootlds.tmp; \
mv -f $$ubootlds.tmp $$ubootlds; \
./mkconfig -a $(call xtract_int_board,ap,$@) arm $$cpu \
$(call xtract_int_board,ap,$@);
#########################################################################
## Integrator/CP
#########################################################################
integratorcp_config : unconfig
@echo -n "/* Integrator configuration implied " > tmp.fil; \
echo " by Makefile target */" >> tmp.fil; \
echo >> tmp.fil
@echo -n "#define CONFIG_INTEGRATOR 1" >> tmp.fil; \
echo " /* Integrator board */" >> tmp.fil; \
echo -n "#define CONFIG_ARCH_CINTEGRATOR" >> tmp.fil; \
echo " 1 /* Integrator/CP */" >> tmp.fil; \
echo "/* Core module not defined */" >> tmp.fil; \
echo -n "#define CONFIG_ARM_INTCM 1" >> tmp.fil; \
echo -n " /* Integrator core module " >> tmp.fil; \
echo "with unknown core */" >> tmp.fil; \
cpu=arm_intcm; \
echo -n "#undef CONFIG_CM_MULTIPLE_SSRAM" >> tmp.fil; \
echo -n " /* CM may not have " >> tmp.fil; \
echo "multiple SSRAM mapping */" >> tmp.fil; \
echo -n "#undef CONFIG_CM_SPD_DETECT " >> tmp.fil; \
echo -n " /* CM may not support SPD " >> tmp.fil; \
echo "query */" >> tmp.fil; \
echo -n "#undef CONFIG_CM_REMAP " >> tmp.fil; \
echo -n " /* CM may not support " >> tmp.fil; \
echo "remapping */" >> tmp.fil; \
echo -n "#undef CONFIG_CM_INIT " >> tmp.fil; \
echo -n " /* CM may not have " >> tmp.fil; \
echo "initialization reg */" >> tmp.fil; \
echo -n "#undef CONFIG_CM_TCRAM " >> tmp.fil; \
echo -n " /* CM may not have TCRAM */" >> tmp.fil; \
mv tmp.fil ./include/config.h; \
ubootlds=board/integratorcp/u-boot.lds; \
sed -e 's/cpu\/.*\/st/cpu\/'$$cpu'\/st/' \
$$ubootlds > $$ubootlds.tmp; \
mv -f $$ubootlds.tmp $$ubootlds; \
./mkconfig -a integratorcp arm arm_intcm integratorcp;
integratorcp_CM920T_config integratorcp_CM920T_ETM_config \
integratorcp_CM922T_XA10_config integratorcp_CM926EJ_S_config \
integratorcp_CM940T_config integratorcp_CM946E_S_config \
integratorcp_CM966E_S_config integratorcp_CM10200E_config \
integratorcp_CM10220E_config integratorcp_CM1026EJ_S_config \
integratorcp_CM1136JF_S_config : unconfig
@echo -n "/* Integrator configuration implied " > tmp.fil; \
echo " by Makefile target */" >> tmp.fil; \
echo >> tmp.fil
@echo -n "#define CONFIG_INTEGRATOR 1" >> tmp.fil; \
echo " /* Integrator board */" >> tmp.fil; \
echo -n "#define CONFIG_ARCH_CINTEGRATOR" >> tmp.fil; \
echo " 1 /* Integrator/CP */" >> tmp.fil; \
cm=$(call xtract_int_cm,cp,$@); \
echo -n "#define CONFIG_$$cm " >> tmp.fil; \
echo " /* core module */" >> tmp.fil; \
echo "/* $$cm core module */" >> tmp.fil; \
case $$cm in \
CM920T) echo -n "#define CONFIG_ARM920" >> tmp.fil; \
echo -n "T 1 /* CPU" >> tmp.fil; \
echo -n " core is ARM920T" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm920t;; \
CM946E_S) echo -n "#define CONFIG_ARM946" >> tmp.fil; \
echo -n "E_S 1 /* CPU" >> tmp.fil; \
echo -n " core is ARM946E-S" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm946es;; \
CM926EJ_S) echo -n "#define CONFIG_ARM926" >> tmp.fil; \
echo -n "EJ_S 1 /* CPU" >> tmp.fil; \
echo -n " core is ARM926EJ-S" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm926ejs;; \
*) echo -n "#define CONFIG_ARM_IN" >> tmp.fil; \
echo -n "TCM 1 /* Int" >> tmp.fil; \
echo -n "egrator core module w" >> tmp.fil; \
echo -n "ith unported core" >> tmp.fil; \
echo " */" >> tmp.fil; \
cpu=arm_intcm;; \
esac; \
mv tmp.fil ./include/config.h; \
ubootlds=board/$(call xtract_int_board,cp,$@)/u-boot.lds; \
sed -e 's/cpu\/.*\/st/cpu\/'$$cpu'\/st/' \
$$ubootlds > $$ubootlds.tmp; \
mv -f $$ubootlds.tmp $$ubootlds; \
./mkconfig -a $(call xtract_int_board,cp,$@) arm $$cpu \
$(call xtract_int_board,cp,$@);
lpd7a400_config \
lpd7a404_config: unconfig

3
board/integratorap/Makefile
View file

@ -30,7 +30,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
OBJS := integratorap.o flash.o
SOBJS := platform.o
SOBJS := platform.o memsetup.o
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $^
@ -49,3 +49,4 @@ distclean: clean
-include .depend
#########################################################################

137
board/integratorap/integratorap.c
View file

@ -477,3 +477,140 @@ int dram_init (void)
{
return 0;
}
/* The Integrator/AP timer1 is clocked at 24MHz
* can be divided by 16 or 256
* and is a 16-bit counter
*/
/* U-Boot expects a 32 bit timer running at CFG_HZ*/
static ulong timestamp; /* U-Boot ticks since startup */
static ulong total_count = 0; /* Total timer count */
static ulong lastdec; /* Timer reading at last call */
static ulong div_clock = 256; /* Divisor applied to the timer clock */
static ulong div_timer = 1; /* Divisor to convert timer reading
* change to U-Boot ticks
*/
/* CFG_HZ = CFG_HZ_CLOCK/(div_clock * div_timer) */
#define TIMER_LOAD_VAL 0x0000FFFFL
#define READ_TIMER ((*(volatile ulong *)(CFG_TIMERBASE+4)) & 0x0000FFFFL)
/* all function return values in U-Boot ticks i.e. (1/CFG_HZ) sec
* - unless otherwise stated
*/
/* starts a counter
* - the Integrator/AP timer issues an interrupt
* each time it reaches zero
*/
int interrupt_init (void)
{
/* Load timer with initial value */
*(volatile ulong *)(CFG_TIMERBASE + 0) = TIMER_LOAD_VAL;
/* Set timer to be
* enabled 1
* free-running 0
* XX 00
* divider 256 10
* XX 00
*/
*(volatile ulong *)(CFG_TIMERBASE + 8) = 0x00000088;
total_count = 0;
/* init the timestamp and lastdec value */
reset_timer_masked();
div_timer = CFG_HZ_CLOCK / CFG_HZ;
div_timer /= div_clock;
return (0);
}
/*
* timer without interrupts
*/
void reset_timer (void)
{
reset_timer_masked ();
}
ulong get_timer (ulong base_ticks)
{
return get_timer_masked () - base_ticks;
}
void set_timer (ulong ticks)
{
timestamp = ticks;
total_count = ticks * div_timer;
reset_timer_masked();
}
/* delay x useconds */
void udelay (unsigned long usec)
{
ulong tmo, tmp;
/* Convert to U-Boot ticks */
tmo = usec * CFG_HZ;
tmo /= (1000000L);
tmp = get_timer_masked(); /* get current timestamp */
tmo += tmp; /* wake up timestamp */
while (get_timer_masked () < tmo)/* loop till event */
{
/*NOP*/;
}
}
void reset_timer_masked (void)
{
/* reset time */
lastdec = READ_TIMER; /* capture current decrementer value */
timestamp = 0; /* start "advancing" time stamp from 0 */
}
/* converts the timer reading to U-Boot ticks */
/* the timestamp is the number of ticks since reset */
/* This routine does not detect wraps unless called regularly
ASSUMES a call at least every 16 seconds to detect every reload */
ulong get_timer_masked (void)
{
ulong now = READ_TIMER; /* current count */
if(now > lastdec)
{
/* Must have wrapped */
total_count += lastdec + TIMER_LOAD_VAL + 1 - now;
} else {
total_count += lastdec - now;
}
lastdec = now;
timestamp = total_count/div_timer;
return timestamp;
}
/* waits specified delay value and resets timestamp */
void udelay_masked (unsigned long usec)
{
udelay(usec);
}
/*
* This function is derived from PowerPC code (read timebase as long long).
* On ARM it just returns the timer value.
*/
unsigned long long get_ticks(void)
{
return get_timer(0);
}
/*
* Return the timebase clock frequency
* i.e. how often the timer decrements
*/
ulong get_tbclk (void)
{
return CFG_HZ_CLOCK/div_clock;
}

30
board/integratorap/memsetup.S Normal file
View file

@ -0,0 +1,30 @@
/*
* Memory setup for integratorAP
*
* 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
*/
/*
* Memory setup
* - the reset defaults are assumed sufficient
*/
.globl memsetup
memsetup:
mov pc,lr

12
board/integratorap/platform.S
View file

@ -31,3 +31,15 @@ platformsetup:
/* All done by Integrator's boot monitor! */
mov pc, lr
/* Reset using CM control register */
.global reset_cpu
reset_cpu:
mov r0, #CM_BASE
ldr r1,[r0,#OS_CTRL]
orr r1,r1,#CMMASK_RESET
str r1,[r0]
reset_failed:
b reset_failed

2
board/integratorcp/Makefile
View file

@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
OBJS := integratorcp.o flash.o
SOBJS := platform.o
SOBJS := platform.o memsetup.o
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $^

185
board/integratorcp/integratorcp.c
View file

@ -42,19 +42,12 @@ void peripheral_power_enable (void);
#if defined(CONFIG_SHOW_BOOT_PROGRESS)
void show_boot_progress(int progress)
{
printf("Boot reached stage %d\n", progress);
printf("Boot reached stage %d\n", progress);
}
#endif
#define COMP_MODE_ENABLE ((unsigned int)0x0000EAEF)
static inline void delay (unsigned long loops)
{
__asm__ volatile ("1:\n"
"subs %0, %1, #1\n"
"bne 1b":"=r" (loops):"0" (loops));
}
/*
* Miscellaneous platform dependent initialisations
*/
@ -71,6 +64,11 @@ int board_init (void)
gd->flags = 0;
#ifdef CONFIG_CM_REMAP
extern void cm_remap(void);
cm_remap(); /* remaps writeable memory to 0x00000000 */
#endif
icache_enable ();
flash__init ();
@ -95,7 +93,7 @@ void flash__init (void)
/*************************************************************
Routine:ether__init
Description: take the Ethernet controller out of reset and wait
for the EEPROM load to complete.
for the EEPROM load to complete.
*************************************************************/
void ether__init (void)
{
@ -107,5 +105,174 @@ void ether__init (void)
******************************/
int dram_init (void)
{
DECLARE_GLOBAL_DATA_PTR;
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
#ifdef CONFIG_CM_SPD_DETECT
{
extern void dram_query(void);
unsigned long cm_reg_sdram;
unsigned long sdram_shift;
dram_query(); /* Assembler accesses to CM registers */
/* Queries the SPD values */
/* Obtain the SDRAM size from the CM SDRAM register */
cm_reg_sdram = *(volatile ulong *)(CM_BASE + OS_SDRAM);
/* Register SDRAM size
*
* 0xXXXXXXbbb000bb 16 MB
* 0xXXXXXXbbb001bb 32 MB
* 0xXXXXXXbbb010bb 64 MB
* 0xXXXXXXbbb011bb 128 MB
* 0xXXXXXXbbb100bb 256 MB
*
*/
sdram_shift = ((cm_reg_sdram & 0x0000001C)/4)%4;
gd->bd->bi_dram[0].size = 0x01000000 << sdram_shift;
}
#endif /* CM_SPD_DETECT */
return 0;
}
/* The Integrator/CP timer1 is clocked at 1MHz
* can be divided by 16 or 256
* and can be set up as a 32-bit timer
*/
/* U-Boot expects a 32 bit timer, running at CFG_HZ */
/* Keep total timer count to avoid losing decrements < div_timer */
static unsigned long long total_count = 0;
static unsigned long long lastdec; /* Timer reading at last call */
static unsigned long long div_clock = 1; /* Divisor applied to timer clock */
static unsigned long long div_timer = 1; /* Divisor to convert timer reading
* change to U-Boot ticks
*/
/* CFG_HZ = CFG_HZ_CLOCK/(div_clock * div_timer) */
static ulong timestamp; /* U-Boot ticks since startup */
#define TIMER_LOAD_VAL ((ulong)0xFFFFFFFF)
#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
/* all function return values in U-Boot ticks i.e. (1/CFG_HZ) sec
* - unless otherwise stated
*/
/* starts up a counter
* - the Integrator/CP timer can be set up to issue an interrupt */
int interrupt_init (void)
{
/* Load timer with initial value */
*(volatile ulong *)(CFG_TIMERBASE + 0) = TIMER_LOAD_VAL;
/* Set timer to be
* enabled 1
* periodic 1
* no interrupts 0
* X 0
* divider 1 00 == less rounding error
* 32 bit 1
* wrapping 0
*/
*(volatile ulong *)(CFG_TIMERBASE + 8) = 0x000000C2;
/* init the timestamp */
total_count = 0ULL;
reset_timer_masked();
div_timer = (unsigned long long)(CFG_HZ_CLOCK / CFG_HZ);
div_timer /= div_clock;
return (0);
}
/*
* timer without interrupts
*/
void reset_timer (void)
{
reset_timer_masked ();
}
ulong get_timer (ulong base_ticks)
{
return get_timer_masked () - base_ticks;
}
void set_timer (ulong ticks)
{
timestamp = ticks;
total_count = (unsigned long long)ticks * div_timer;
}
/* delay usec useconds */
void udelay (unsigned long usec)
{
ulong tmo, tmp;
/* Convert to U-Boot ticks */
tmo = usec * CFG_HZ;
tmo /= (1000000L);
tmp = get_timer_masked(); /* get current timestamp */
tmo += tmp; /* form target timestamp */
while (get_timer_masked () < tmo)/* loop till event */
{
/*NOP*/;
}
}
void reset_timer_masked (void)
{
/* capure current decrementer value */
lastdec = (unsigned long long)READ_TIMER;
/* start "advancing" time stamp from 0 */
timestamp = 0L;
}
/* converts the timer reading to U-Boot ticks */
/* the timestamp is the number of ticks since reset */
ulong get_timer_masked (void)
{
/* get current count */
unsigned long long now = (unsigned long long)READ_TIMER;
if(now > lastdec)
{
/* Must have wrapped */
total_count += lastdec + TIMER_LOAD_VAL + 1 - now;
} else {
total_count += lastdec - now;
}
lastdec = now;
timestamp = (ulong)(total_count/div_timer);
return timestamp;
}
/* waits specified delay value and resets timestamp */
void udelay_masked (unsigned long usec)
{
udelay(usec);
}
/*
* This function is derived from PowerPC code (read timebase as long long).
* On ARM it just returns the timer value.
*/
unsigned long long get_ticks(void)
{
return (unsigned long long)get_timer(0);
}
/*
* Return the timebase clock frequency
* i.e. how often the timer decrements
*/
ulong get_tbclk (void)
{
return (ulong)(((unsigned long long)CFG_HZ_CLOCK)/div_clock);
}

30
board/integratorcp/memsetup.S Normal file
View file

@ -0,0 +1,30 @@
/*
* Memory setup for integratorAP
*
* 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
*/
/*
* Memory setup
* - the reset defaults are assumed sufficient
*/
.globl memsetup
memsetup:
mov pc,lr

185
board/integratorcp/platform.S
View file

@ -26,8 +26,189 @@
#include <config.h>
#include <version.h>
/* Reset using CM control register */
.global reset_cpu
reset_cpu:
mov r0, #CM_BASE
ldr r1,[r0,#OS_CTRL]
orr r1,r1,#CMMASK_RESET
str r1,[r0]
reset_failed:
b reset_failed
/* set up the platform, once the cpu has been initialized */
.globl platformsetup
platformsetup:
/* If U-Boot has been run after the ARM boot monitor
* then all the necessary actions have been done
* otherwise we are running from user flash mapped to 0x00000000
* --- DO NOT REMAP BEFORE THE CODE HAS BEEN RELOCATED --
* Changes to the (possibly soft) reset defaults of the processor
* itself should be performed in cpu/arm<>/start.S
* This function affects only the core module or board settings
*/
#ifdef CONFIG_CM_INIT
/* CM has an initialization register
* - bits in it are wired into test-chip pins to force
* reset defaults
* - may need to change its contents for U-Boot
*/
/* set the desired CM specific value */
mov r2,#CMMASK_LOWVEC /* Vectors at 0x00000000 for all */
#if defined (CONFIG_CM10200E) || defined (CONFIG_CM10220E)
orr r2,r2,#CMMASK_INIT_102
#else
#if !defined (CONFIG_CM920T) && !defined (CONFIG_CM920T_ETM) && \
!defined (CONFIG_CM940T)
#ifdef CONFIG_CM_MULTIPLE_SSRAM
/* set simple mapping */
and r2,r2,#CMMASK_MAP_SIMPLE
#endif /* #ifdef CONFIG_CM_MULTIPLE_SSRAM */
#ifdef CONFIG_CM_TCRAM
/* disable TCRAM */
and r2,r2,#CMMASK_TCRAM_DISABLE
#endif /* #ifdef CONFIG_CM_TCRAM */
#if defined (CONFIG_CM926EJ_S) || defined (CONFIG_CM1026EJ_S) || \
defined (CONFIG_CM1136JF_S)
and r2,r2,#CMMASK_LE
#endif /* cpu with little endian initialization */
orr r2,r2,#CMMASK_CMxx6_COMMON
#endif /* CMxx6 code */
#endif /* ARM102xxE value */
/* read CM_INIT */
mov r0, #CM_BASE
ldr r1, [r0, #OS_INIT]
/* check against desired bit setting */
and r3,r1,r2
cmp r3,r2
beq init_reg_OK
/* lock for change */
mov r3, #CMVAL_LOCK
and r3,r3,#CMMASK_LOCK
str r3, [r0, #OS_LOCK]
/* set desired value */
orr r1,r1,r2
/* write & relock CM_INIT */
str r1, [r0, #OS_INIT]
mov r1, #CMVAL_UNLOCK
str r1, [r0, #OS_LOCK]
/* soft reset so new values used */
b reset_cpu
init_reg_OK:
#endif /* CONFIG_CM_INIT */
mov pc, lr
#ifdef CONFIG_CM_SPD_DETECT
/* Fast memory is available for the DRAM data
* - ensure it has been transferred, then summarize the data
* into a CM register
*/
.globl dram_query
dram_query:
stmfd r13!,{r4-r6,lr}
/* set up SDRAM info */
/* - based on example code from the CM User Guide */
mov r0, #CM_BASE
readspdbit:
ldr r1, [r0, #OS_SDRAM] /* read the SDRAM register */
and r1, r1, #0x20 /* mask SPD bit (5) */
cmp r1, #0x20 /* test if set */
bne readspdbit
setupsdram:
add r0, r0, #OS_SPD /* address the copy of the SDP data */
ldrb r1, [r0, #3] /* number of row address lines */
ldrb r2, [r0, #4] /* number of column address lines */
ldrb r3, [r0, #5] /* number of banks */
ldrb r4, [r0, #31] /* module bank density */
mul r5, r4, r3 /* size of SDRAM (MB divided by 4) */
mov r5, r5, ASL#2 /* size in MB */
mov r0, #CM_BASE /* reload for later code */
cmp r5, #0x10 /* is it 16MB? */
bne not16
mov r6, #0x2 /* store size and CAS latency of 2 */
b writesize
not16:
cmp r5, #0x20 /* is it 32MB? */
bne not32
mov r6, #0x6
b writesize
not32:
cmp r5, #0x40 /* is it 64MB? */
bne not64
mov r6, #0xa
b writesize
not64:
cmp r5, #0x80 /* is it 128MB? */
bne not128
mov r6, #0xe
b writesize
not128:
/* if it is none of these sizes then it is either 256MB, or
* there is no SDRAM fitted so default to 256MB
*/
mov r6, #0x12
writesize:
mov r1, r1, ASL#8 /* row addr lines from SDRAM reg */
orr r2, r1, r2, ASL#12 /* OR in column address lines */
orr r3, r2, r3, ASL#16 /* OR in number of banks */
orr r6, r6, r3 /* OR in size and CAS latency */
str r6, [r0, #OS_SDRAM] /* store SDRAM parameters */
#endif /* #ifdef CONFIG_CM_SPD_DETECT */
ldmfd r13!,{r4-r6,pc} /* back to caller */
#ifdef CONFIG_CM_REMAP
/* CM remap bit is operational
* - use it to map writeable memory at 0x00000000, in place of flash
*/
.globl cm_remap
cm_remap:
stmfd r13!,{r4-r10,lr}
mov r0, #CM_BASE
ldr r1, [r0, #OS_CTRL]
orr r1, r1, #CMMASK_REMAP /* set remap and led bits */
str r1, [r0, #OS_CTRL]
/* Now 0x00000000 is writeable, replace the vectors */
ldr r0, =_start /* r0 <- start of vectors */
ldr r2, =_armboot_start /* r2 <- past vectors */
sub r1,r1,r1 /* destination 0x00000000 */
copy_vec:
ldmia r0!, {r3-r10} /* copy from source address [r0] */
stmia r1!, {r3-r10} /* copy to target address [r1] */
cmp r0, r2 /* until source end address [r2] */
ble copy_vec
ldmfd r13!,{r4-r10,pc} /* back to caller */
#endif /* #ifdef CONFIG_CM_REMAP */
/* All done by IntegratorCP's boot monitor! */
mov pc, lr

16
cpu/arm920t/cpu.c
View file

@ -39,7 +39,7 @@ static unsigned long read_p15_c1 (void)
unsigned long value;
__asm__ __volatile__(
"mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
"mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
: "=r" (value)
:
: "memory");
@ -57,7 +57,7 @@ static void write_p15_c1 (unsigned long value)
printf ("write %08lx to p15/c1\n", value);
#endif
__asm__ __volatile__(
"mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
"mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
:
: "r" (value)
: "memory");
@ -73,16 +73,17 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
/* See also ARM Ref. Man. */
/* See also ARM920T Technical reference Manual */
#define C1_MMU (1<<0) /* mmu off/on */
#define C1_ALIGN (1<<1) /* alignment faults off/on */
#define C1_DC (1<<2) /* dcache off/on */
#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
#define C1_SYS_PROT (1<<8) /* system protection */
#define C1_ROM_PROT (1<<9) /* ROM protection */
#define C1_IC (1<<12) /* icache off/on */
#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
int cpu_init (void)
{
@ -119,6 +120,7 @@ int cleanup_before_linux (void)
/* flush I/D-cache */
i = 0;
asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i));
return (0);
}
@ -134,7 +136,7 @@ void icache_enable (void)
{
ulong reg;
reg = read_p15_c1 ();
reg = read_p15_c1 (); /* get control reg. */
cp_delay ();
write_p15_c1 (reg | C1_IC);
}

8
cpu/arm920t/interrupts.c
View file

@ -30,7 +30,6 @@
*/
#include <common.h>
#include <arm920t.h>
#include <asm/proc-armv/ptrace.h>
@ -162,7 +161,14 @@ void do_fiq (struct pt_regs *pt_regs)
void do_irq (struct pt_regs *pt_regs)
{
#if defined (CONFIG_USE_IRQ) && defined (CONFIG_ARCH_INTEGRATOR)
/* ASSUMED to be a timer interrupt */
/* Just clear it - count handled in */
/* integratorap.c */
*(volatile ulong *)(CFG_TIMERBASE + 0x0C) = 0;
#else
printf ("interrupt request\n");
show_regs (pt_regs);
bad_mode ();
#endif
}

13
cpu/arm926ejs/cpu.c
View file

@ -69,21 +69,21 @@ static void cp_delay (void)
{
volatile int i;
/* Many OMAP regs need at least 2 nops */
/* copro seems to need some delay between reading and writing */
for (i = 0; i < 100; i++);
}
/* See also ARM Ref. Man. */
/* See also ARM926EJ-S Technical Reference Manual */
#define C1_MMU (1<<0) /* mmu off/on */
#define C1_ALIGN (1<<1) /* alignment faults off/on */
#define C1_DC (1<<2) /* dcache off/on */
#define C1_WB (1<<3) /* merging write buffer on/off */
#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
#define C1_SYS_PROT (1<<8) /* system protection */
#define C1_ROM_PROT (1<<9) /* ROM protection */
#define C1_IC (1<<12) /* icache off/on */
#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
int cpu_init (void)
{
@ -120,6 +120,7 @@ int cleanup_before_linux (void)
/* flush I/D-cache */
i = 0;
asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i));
return (0);
}

21
cpu/arm926ejs/interrupts.c
View file

@ -36,8 +36,7 @@
*/
#include <common.h>
#include <arm925t.h>
#include <arm926ejs.h>
#include <asm/proc-armv/ptrace.h>
#define TIMER_LOAD_VAL 0xffffffff
@ -46,9 +45,6 @@
#ifdef CONFIG_OMAP
#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+8))
#endif
#ifdef CONFIG_INTEGRATOR
#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
#endif
#ifdef CONFIG_VERSATILE
#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
#endif
@ -186,6 +182,12 @@ void do_irq (struct pt_regs *pt_regs)
bad_mode ();
}
#ifdef CONFIG_INTEGRATOR
/* Timer functionality supplied by Integrator board (AP or CP) */
#else
static ulong timestamp;
static ulong lastdec;
@ -200,12 +202,7 @@ int interrupt_init (void)
val = MPUTIM_ST | MPUTIM_AR | MPUTIM_CLOCK_ENABLE | (CFG_PVT << MPUTIM_PTV_BIT);
*((int32_t *) (CFG_TIMERBASE + CNTL_TIMER)) = val;
#endif /* CONFIG_OMAP */
#ifdef CONFIG_INTEGRATOR
/* Load timer with initial value */
*(volatile ulong *)(CFG_TIMERBASE + 0) = TIMER_LOAD_VAL;
/* Set timer to be enabled, free-running, no interrupts, 256 divider */
*(volatile ulong *)(CFG_TIMERBASE + 8) = 0x8C;
#endif /* CONFIG_INTEGRATOR */
#ifdef CONFIG_VERSATILE
*(volatile ulong *)(CFG_TIMERBASE + 0) = CFG_TIMER_RELOAD; /* TimerLoad */
*(volatile ulong *)(CFG_TIMERBASE + 4) = CFG_TIMER_RELOAD; /* TimerValue */
@ -332,3 +329,5 @@ ulong get_tbclk (void)
tbclk = CFG_HZ;
return tbclk;
}
#endif /* CONFIG_INTEGRATOR */

10
cpu/arm926ejs/start.S
View file

@ -393,6 +393,12 @@ fiq:
#endif
# ifdef CONFIG_INTEGRATOR
/* Satisfied by Integrator routine (AP or CP) */
#else
.align 5
.globl reset_cpu
reset_cpu:
@ -404,6 +410,8 @@ reset_cpu:
_loop_forever:
b _loop_forever
rstctl1:
.word 0xfffece10
#endif /* #ifdef CONFIG_INTEGRATOR */

44
cpu/arm946es/Makefile Normal file
View file

@ -0,0 +1,44 @@
#
# (C) Copyright 2000-2003
# Wolfgang Denk, DENX Software Engineering, wd@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 $(TOPDIR)/config.mk
LIB = lib$(CPU).a
START = start.o
OBJS = interrupts.o cpu.o
all: .depend $(START) $(LIB)
$(LIB): $(OBJS)
$(AR) crv $@ $(OBJS)
#########################################################################
.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
$(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
sinclude .depend
#########################################################################

27
cpu/arm946es/config.mk Normal file
View file

@ -0,0 +1,27 @@
#
# (C) Copyright 2002
# Gary Jennejohn, DENX Software Engineering, <gj@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
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
-msoft-float
PLATFORM_CPPFLAGS += -march=armv4

164
cpu/arm946es/cpu.c Normal file
View file

@ -0,0 +1,164 @@
/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Gary Jennejohn, DENX Software Engineering, <gj@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
*/
/*
* CPU specific code
*/
#include <common.h>
#include <command.h>
#include <arm946es.h>
/* read co-processor 15, register #1 (control register) */
static unsigned long read_p15_c1 (void)
{
unsigned long value;
__asm__ __volatile__(
"mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
: "=r" (value)
:
: "memory");
#ifdef MMU_DEBUG
printf ("p15/c1 is = %08lx\n", value);
#endif
return value;
}
/* write to co-processor 15, register #1 (control register) */
static void write_p15_c1 (unsigned long value)
{
#ifdef MMU_DEBUG
printf ("write %08lx to p15/c1\n", value);
#endif
__asm__ __volatile__(
"mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
:
: "r" (value)
: "memory");
read_p15_c1 ();
}
static void cp_delay (void)
{
volatile int i;
/* copro seems to need some delay between reading and writing */
for (i = 0; i < 100; i++);
}
/* See also ARM946E-S Technical Reference Manual */
#define C1_MMU (1<<0) /* mmu off/on */
#define C1_ALIGN (1<<1) /* alignment faults off/on */
#define C1_DC (1<<2) /* dcache off/on */
#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
#define C1_SYS_PROT (1<<8) /* system protection */
#define C1_ROM_PROT (1<<9) /* ROM protection */
#define C1_IC (1<<12) /* icache off/on */
#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
int cpu_init (void)
{
/*
* setup up stacks if necessary
*/
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4;
FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
#endif
return 0;
}
int cleanup_before_linux (void)
{
/*
* this function is called just before we call linux
* it prepares the processor for linux
*
* we turn off caches etc ...
*/
unsigned long i;
disable_interrupts ();
/* ARM926E-S needs the protection unit enabled for the icache to have
* been enabled - left for possible later use
* should turn off the protection unit as well....
*/
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
i &= ~(C1_DC | C1_IC);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
i = 0;
asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
asm ("mcr p15, 0, %0, c7, c6, 0": :"r" (i));
return (0);
}
int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
extern void reset_cpu (ulong addr);
disable_interrupts ();
reset_cpu (0);
/*NOTREACHED*/
return (0);
}
/* ARM926E-S needs the protection unit enabled for this to have any effect
- left for possible later use */
void icache_enable (void)
{
ulong reg;
reg = read_p15_c1 (); /* get control reg. */
cp_delay ();
write_p15_c1 (reg | C1_IC);
}
void icache_disable (void)
{
ulong reg;
reg = read_p15_c1 ();
cp_delay ();
write_p15_c1 (reg & ~C1_IC);
}
int icache_status (void)
{
return (read_p15_c1 () & C1_IC) != 0;
}

292
cpu/arm946es/interrupts.c Normal file
View file

@ -0,0 +1,292 @@
/*
* (C) Copyright 2003
* Texas Instruments <www.ti.com>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* (C) Copyright 2002-2004
* Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
*
* (C) Copyright 2004
* Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
*
* 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 <common.h>
#include <arm946es.h>
#include <asm/proc-armv/ptrace.h>
#define TIMER_LOAD_VAL 0xffffffff
extern void reset_cpu(ulong addr);
#ifdef CONFIG_USE_IRQ
/* enable IRQ interrupts */
void enable_interrupts (void)
{
unsigned long temp;
__asm__ __volatile__("mrs %0, cpsr\n"
"bic %0, %0, #0x80\n"
"msr cpsr_c, %0"
: "=r" (temp)
:
: "memory");
}
/*
* disable IRQ/FIQ interrupts
* returns true if interrupts had been enabled before we disabled them
*/
int disable_interrupts (void)
{
unsigned long old,temp;
__asm__ __volatile__("mrs %0, cpsr\n"
"orr %1, %0, #0xc0\n"
"msr cpsr_c, %1"
: "=r" (old), "=r" (temp)
:
: "memory");
return (old & 0x80) == 0;
}
#else
void enable_interrupts (void)
{
return;
}
int disable_interrupts (void)
{
return 0;
}
#endif
void bad_mode (void)
{
panic ("Resetting CPU ...\n");
reset_cpu (0);
}
void show_regs (struct pt_regs *regs)
{
unsigned long flags;
const char *processor_modes[] = {
"USER_26", "FIQ_26", "IRQ_26", "SVC_26",
"UK4_26", "UK5_26", "UK6_26", "UK7_26",
"UK8_26", "UK9_26", "UK10_26", "UK11_26",
"UK12_26", "UK13_26", "UK14_26", "UK15_26",
"USER_32", "FIQ_32", "IRQ_32", "SVC_32",
"UK4_32", "UK5_32", "UK6_32", "ABT_32",
"UK8_32", "UK9_32", "UK10_32", "UND_32",
"UK12_32", "UK13_32", "UK14_32", "SYS_32",
};
flags = condition_codes (regs);
printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
"sp : %08lx ip : %08lx fp : %08lx\n",
instruction_pointer (regs),
regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
printf ("Flags: %c%c%c%c",
flags & CC_N_BIT ? 'N' : 'n',
flags & CC_Z_BIT ? 'Z' : 'z',
flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
printf (" IRQs %s FIQs %s Mode %s%s\n",
interrupts_enabled (regs) ? "on" : "off",
fast_interrupts_enabled (regs) ? "on" : "off",
processor_modes[processor_mode (regs)],
thumb_mode (regs) ? " (T)" : "");
}
void do_undefined_instruction (struct pt_regs *pt_regs)
{
printf ("undefined instruction\n");
show_regs (pt_regs);
bad_mode ();
}
void do_software_interrupt (struct pt_regs *pt_regs)
{
printf ("software interrupt\n");
show_regs (pt_regs);
bad_mode ();
}
void do_prefetch_abort (struct pt_regs *pt_regs)
{
printf ("prefetch abort\n");
show_regs (pt_regs);
bad_mode ();
}
void do_data_abort (struct pt_regs *pt_regs)
{
printf ("data abort\n");
show_regs (pt_regs);
bad_mode ();
}
void do_not_used (struct pt_regs *pt_regs)
{
printf ("not used\n");
show_regs (pt_regs);
bad_mode ();
}
void do_fiq (struct pt_regs *pt_regs)
{
printf ("fast interrupt request\n");
show_regs (pt_regs);
bad_mode ();
}
void do_irq (struct pt_regs *pt_regs)
{
printf ("interrupt request\n");
show_regs (pt_regs);
bad_mode ();
}
#ifdef CONFIG_INTEGRATOR
/* Timer functionality supplied by Integrator board (AP or CP) */
#else
static ulong timestamp;
static ulong lastdec;
/* nothing really to do with interrupts, just starts up a counter. */
int interrupt_init (void)
{
/* init the timestamp and lastdec value */
reset_timer_masked();
return (0);
}
/*
* timer without interrupts
*/
void reset_timer (void)
{
reset_timer_masked ();
}
ulong get_timer (ulong base)
{
return get_timer_masked () - base;
}
void set_timer (ulong t)
{
timestamp = t;
}
/* delay x useconds AND perserve advance timstamp value */
void udelay(unsigned long usec)
{
udelay_masked(usec);
}
void reset_timer_masked (void)
{
/* reset time */
lastdec = READ_TIMER; /* capure current decrementer value time */
timestamp = 0; /* start "advancing" time stamp from 0 */
}
ulong get_timer_raw (void)
{
ulong now = READ_TIMER; /* current tick value */
if (lastdec >= now) { /* normal mode (non roll) */
/* normal mode */
timestamp += lastdec - now; /* move stamp fordward with absoulte diff ticks */
} else { /* we have overflow of the count down timer */
/* nts = ts + ld + (TLV - now)
* ts=old stamp, ld=time that passed before passing through -1
* (TLV-now) amount of time after passing though -1
* nts = new "advancing time stamp"...it could also roll and cause problems.
*/
timestamp += lastdec + TIMER_LOAD_VAL - now;
}
lastdec = now;
return timestamp;
}
ulong get_timer_masked (void)
{
return get_timer_raw() / TIMER_LOAD_VAL;
}
/* waits specified delay value and resets timestamp */
void udelay_masked (unsigned long usec)
{
ulong tmo;
if(usec >= 1000){ /* if "big" number, spread normalization to seconds */
tmo = usec / 1000; /* start to normalize for usec to ticks per sec */
tmo *= CFG_HZ_CLOCK; /* find number of "ticks" to wait to achieve target */
tmo /= 1000; /* finish normalize. */
}else{ /* else small number, don't kill it prior to HZ multiply */
tmo = usec * CFG_HZ_CLOCK;
tmo /= (1000*1000);
}
reset_timer_masked (); /* set "advancing" timestamp to 0, set lastdec vaule */
while (get_timer_raw () < tmo) /* wait for time stamp to overtake tick number.*/
/*NOP*/;
}
/*
* This function is derived from PowerPC code (read timebase as long long).
* On ARM it just returns the timer value.
*/
unsigned long long get_ticks(void)
{
return get_timer(0);
}
/*
* This function is derived from PowerPC code (timebase clock frequency).
* On ARM it returns the number of timer ticks per second.
*/
ulong get_tbclk (void)
{
ulong tbclk;
tbclk = CFG_HZ;
return tbclk;
}
#endif /* CONFIG_INTEGRATOR */

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/*
* armboot - Startup Code for ARM926EJS CPU-core
*
* Copyright (c) 2003 Texas Instruments
*
* ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------
*
* Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
* Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
* Copyright (c) 2002 Gary Jennejohn <gj@denx.de>
* Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
* Copyright (c) 2003 Kshitij <kshitij@ti.com>
*
* 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>
/*
*************************************************************************
*
* Jump vector table as in table 3.1 in [1]
*
*************************************************************************
*/
.globl _start
_start:
b reset
ldr pc, _undefined_instruction
ldr pc, _software_interrupt
ldr pc, _prefetch_abort
ldr pc, _data_abort
ldr pc, _not_used
ldr pc, _irq
ldr pc, _fiq
_undefined_instruction:
.word undefined_instruction
_software_interrupt:
.word software_interrupt
_prefetch_abort:
.word prefetch_abort
_data_abort:
.word data_abort
_not_used:
.word not_used
_irq:
.word irq
_fiq:
.word fiq
.balignl 16,0xdeadbeef
/*
*************************************************************************
*
* Startup Code (reset vector)
*
* do important init only if we don't start from memory!
* setup Memory and board specific bits prior to relocation.
* relocate armboot to ram
* setup stack
*
*************************************************************************
*/
_TEXT_BASE:
.word TEXT_BASE
.globl _armboot_start
_armboot_start:
.word _start
/*
* These are defined in the board-specific linker script.
*/
.globl _bss_start
_bss_start:
.word __bss_start
.globl _bss_end
_bss_end:
.word _end
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
IRQ_STACK_START:
.word 0x0badc0de
/* IRQ stack memory (calculated at run-time) */
.globl FIQ_STACK_START
FIQ_STACK_START:
.word 0x0badc0de
#endif
/*
* the actual reset code
*/
reset:
/*
* set the cpu to SVC32 mode
*/
mrs r0,cpsr
bic r0,r0,#0x1f
orr r0,r0,#0xd3
msr cpsr,r0
/*
* we do sys-critical inits only at reboot,
* not when booting from ram!
*/
#ifdef CONFIG_INIT_CRITICAL
bl cpu_init_crit
#endif
relocate: /* relocate U-Boot to RAM */
adr r0, _start /* r0 <- current position of code */
ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
cmp r0, r1 /* don't reloc during debug */
beq stack_setup
ldr r2, _armboot_start
ldr r3, _bss_start
sub r2, r3, r2 /* r2 <- size of armboot */
add r2, r0, r2 /* r2 <- source end address */
copy_loop:
ldmia r0!, {r3-r10} /* copy from source address [r0] */
stmia r1!, {r3-r10} /* copy to target address [r1] */
cmp r0, r2 /* until source end addreee [r2] */
ble copy_loop
/* Set up the stack */
stack_setup:
ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
sub r0, r0, #CFG_MALLOC_LEN /* malloc area */
sub r0, r0, #CFG_GBL_DATA_SIZE /* bdinfo */
#ifdef CONFIG_USE_IRQ
sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
#endif
sub sp, r0, #12 /* leave 3 words for abort-stack */
clear_bss:
ldr r0, _bss_start /* find start of bss segment */
ldr r1, _bss_end /* stop here */
mov r2, #0x00000000 /* clear */
clbss_l:str r2, [r0] /* clear loop... */
add r0, r0, #4
cmp r0, r1
bne clbss_l
ldr pc, _start_armboot
_start_armboot:
.word start_armboot
/*
*************************************************************************
*
* CPU_init_critical registers
*
* setup important registers
* setup memory timing
*
*************************************************************************
*/
cpu_init_crit:
/*
* flush v4 I/D caches
*/
mov r0, #0
mcr p15, 0, r0, c7, c5, 0 /* flush v4 I-cache */
mcr p15, 0, r0, c7, c6, 0 /* flush v4 D-cache */
/*
* disable MMU stuff and caches
*/
mrc p15, 0, r0, c1, c0, 0
bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */
bic r0, r0, #0x00000087 /* clear bits 7, 2:0 (B--- -CAM) */
orr r0, r0, #0x00000002 /* set bit 2 (A) Align */
orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */
mcr p15, 0, r0, c1, c0, 0
/*
* Go setup Memory and board specific bits prior to relocation.
*/
mov ip, lr /* perserve link reg across call */
bl platformsetup /* go setup memory */
mov lr, ip /* restore link */
mov pc, lr /* back to my caller */
/*
*************************************************************************
*
* Interrupt handling
*
*************************************************************************
*/
@
@ IRQ stack frame.
@
#define S_FRAME_SIZE 72
#define S_OLD_R0 68
#define S_PSR 64
#define S_PC 60
#define S_LR 56
#define S_SP 52
#define S_IP 48
#define S_FP 44
#define S_R10 40
#define S_R9 36
#define S_R8 32
#define S_R7 28
#define S_R6 24
#define S_R5 20
#define S_R4 16
#define S_R3 12
#define S_R2 8
#define S_R1 4
#define S_R0 0
#define MODE_SVC 0x13
#define I_BIT 0x80
/*
* use bad_save_user_regs for abort/prefetch/undef/swi ...
* use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
*/
.macro bad_save_user_regs
@ carve out a frame on current user stack
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12
ldr r2, _armboot_start
sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN)
sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack
@ get values for "aborted" pc and cpsr (into parm regs)
ldmia r2, {r2 - r3}
add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack
add r5, sp, #S_SP
mov r1, lr
stmia r5, {r0 - r3} @ save sp_SVC, lr_SVC, pc, cpsr
mov r0, sp @ save current stack into r0 (param register)
.endm
.macro irq_save_user_regs
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12} @ Calling r0-r12
@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
add r8, sp, #S_PC
stmdb r8, {sp, lr}^ @ Calling SP, LR
str lr, [r8, #0] @ Save calling PC
mrs r6, spsr
str r6, [r8, #4] @ Save CPSR
str r0, [r8, #8] @ Save OLD_R0
mov r0, sp
.endm
.macro irq_restore_user_regs
ldmia sp, {r0 - lr}^ @ Calling r0 - lr
mov r0, r0
ldr lr, [sp, #S_PC] @ Get PC
add sp, sp, #S_FRAME_SIZE
subs pc, lr, #4 @ return & move spsr_svc into cpsr
.endm
.macro get_bad_stack
ldr r13, _armboot_start @ setup our mode stack
sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN)
sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack
str lr, [r13] @ save caller lr in position 0 of saved stack
mrs lr, spsr @ get the spsr
str lr, [r13, #4] @ save spsr in position 1 of saved stack
mov r13, #MODE_SVC @ prepare SVC-Mode
@ msr spsr_c, r13
msr spsr, r13 @ switch modes, make sure moves will execute
mov lr, pc @ capture return pc
movs pc, lr @ jump to next instruction & switch modes.
.endm
.macro get_irq_stack @ setup IRQ stack
ldr sp, IRQ_STACK_START
.endm
.macro get_fiq_stack @ setup FIQ stack
ldr sp, FIQ_STACK_START
.endm
/*
* exception handlers
*/
.align 5
undefined_instruction:
get_bad_stack
bad_save_user_regs
bl do_undefined_instruction
.align 5
software_interrupt:
get_bad_stack
bad_save_user_regs
bl do_software_interrupt
.align 5
prefetch_abort:
get_bad_stack
bad_save_user_regs
bl do_prefetch_abort
.align 5
data_abort:
get_bad_stack
bad_save_user_regs
bl do_data_abort
.align 5
not_used:
get_bad_stack
bad_save_user_regs
bl do_not_used
#ifdef CONFIG_USE_IRQ
.align 5
irq:
get_irq_stack
irq_save_user_regs
bl do_irq
irq_restore_user_regs
.align 5
fiq:
get_fiq_stack
/* someone ought to write a more effiction fiq_save_user_regs */
irq_save_user_regs
bl do_fiq
irq_restore_user_regs
#else
.align 5
irq:
get_bad_stack
bad_save_user_regs
bl do_irq
.align 5
fiq:
get_bad_stack
bad_save_user_regs
bl do_fiq
#endif
# ifdef CONFIG_INTEGRATOR
/* Satisfied by general board level routine */
#else
.align 5
.globl reset_cpu
reset_cpu:
ldr r1, rstctl1 /* get clkm1 reset ctl */
mov r3, #0x0
strh r3, [r1] /* clear it */
mov r3, #0x8
strh r3, [r1] /* force dsp+arm reset */
_loop_forever:
b _loop_forever
rstctl1:
.word 0xfffece10
#endif /* #ifdef CONFIG_INTEGRATOR */

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#
# (C) Copyright 2000-2003
# Wolfgang Denk, DENX Software Engineering, wd@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 $(TOPDIR)/config.mk
LIB = lib$(CPU).a
START = start.o
OBJS = interrupts.o cpu.o
all: .depend $(START) $(LIB)
$(LIB): $(OBJS)
$(AR) crv $@ $(OBJS)
#########################################################################
.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
$(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
sinclude .depend
#########################################################################

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#
# (C) Copyright 2002
# Gary Jennejohn, DENX Software Engineering, <gj@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
#
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
-msoft-float
PLATFORM_CPPFLAGS += -march=armv4

91
cpu/arm_intcm/cpu.c Normal file
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/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Gary Jennejohn, DENX Software Engineering, <gj@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
*/
/*
* CPU specific code for an unknown cpu
* - hence fairly empty......
*/
#include <common.h>
#include <command.h>
int cpu_init (void)
{
/*
* setup up stacks if necessary
*/
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4;
FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
#endif
return 0;
}
int cleanup_before_linux (void)
{
/*
* this function is called just before we call linux
* it prepares the processor for linux
*
* we turn off caches etc ...
*/
disable_interrupts ();
/* Since the CM has unknown processor we do not support
* cache operations
*/
return (0);
}
int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
extern void reset_cpu (ulong addr);
disable_interrupts ();
reset_cpu (0);
/*NOTREACHED*/
return (0);
}
/* May not be cahed processor on the CM - do nothing */
void icache_enable (void)
{
}
void icache_disable (void)
{
}
/* return "disabled" */
int icache_status (void)
{
return 0;
}

192
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/*
* (C) Copyright 2003
* Texas Instruments <www.ti.com>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* (C) Copyright 2002-2004
* Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
*
* (C) Copyright 2004
* Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
*
* 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 <common.h>
#include <asm/proc-armv/ptrace.h>
#ifndef CONFIG_INTEGRATOR
/* Only to be used for integrator/AP or /CP */
/* Allows U-Boot to be used with any ARM supplied core module (CM),
* provided the ARM boot monitor, or similar software,
* runs first to set up the platform e.g. map writeable memory to 0x00000000
* - see Integrator User Guides
* Versatile has a supported cpu - arm926ejs
* Some integrator CMs cpus are supported
* CM926EJ-S, CM946E-S
* For platforms with supported cpus U-Boot can be used as the sole boot
* monitor/loader - it will configure the platform itself
* Also U-Boot may be faster/smaller in those cases since specific
* qualities of the cpu and/or CM can be used e.g i and/or d caches etc.
*/
#endif
extern void reset_cpu(ulong addr);
#ifdef CONFIG_USE_IRQ
/* enable IRQ interrupts */
void enable_interrupts (void)
{
unsigned long temp;
__asm__ __volatile__("mrs %0, cpsr\n"
"bic %0, %0, #0x80\n"
"msr cpsr_c, %0"
: "=r" (temp)
:
: "memory");
}
/*
* disable IRQ/FIQ interrupts
* returns true if interrupts had been enabled before we disabled them
*/
int disable_interrupts (void)
{
unsigned long old,temp;
__asm__ __volatile__("mrs %0, cpsr\n"
"orr %1, %0, #0xc0\n"
"msr cpsr_c, %1"
: "=r" (old), "=r" (temp)
:
: "memory");
return (old & 0x80) == 0;
}
#else
void enable_interrupts (void)
{
return;
}
int disable_interrupts (void)
{
return 0;
}
#endif
void bad_mode (void)
{
panic ("Resetting CPU ...\n");
reset_cpu (0);
}
void show_regs (struct pt_regs *regs)
{
unsigned long flags;
const char *processor_modes[] = {
"USER_26", "FIQ_26", "IRQ_26", "SVC_26",
"UK4_26", "UK5_26", "UK6_26", "UK7_26",
"UK8_26", "UK9_26", "UK10_26", "UK11_26",
"UK12_26", "UK13_26", "UK14_26", "UK15_26",
"USER_32", "FIQ_32", "IRQ_32", "SVC_32",
"UK4_32", "UK5_32", "UK6_32", "ABT_32",
"UK8_32", "UK9_32", "UK10_32", "UND_32",
"UK12_32", "UK13_32", "UK14_32", "SYS_32",
};
flags = condition_codes (regs);
printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
"sp : %08lx ip : %08lx fp : %08lx\n",
instruction_pointer (regs),
regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
printf ("Flags: %c%c%c%c",
flags & CC_N_BIT ? 'N' : 'n',
flags & CC_Z_BIT ? 'Z' : 'z',
flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
printf (" IRQs %s FIQs %s Mode %s%s\n",
interrupts_enabled (regs) ? "on" : "off",
fast_interrupts_enabled (regs) ? "on" : "off",
processor_modes[processor_mode (regs)],
thumb_mode (regs) ? " (T)" : "");
}
void do_undefined_instruction (struct pt_regs *pt_regs)
{
printf ("undefined instruction\n");
show_regs (pt_regs);
bad_mode ();
}
void do_software_interrupt (struct pt_regs *pt_regs)
{
printf ("software interrupt\n");
show_regs (pt_regs);
bad_mode ();
}
void do_prefetch_abort (struct pt_regs *pt_regs)
{
printf ("prefetch abort\n");
show_regs (pt_regs);
bad_mode ();
}
void do_data_abort (struct pt_regs *pt_regs)
{
printf ("data abort\n");
show_regs (pt_regs);
bad_mode ();
}
void do_not_used (struct pt_regs *pt_regs)
{
printf ("not used\n");
show_regs (pt_regs);
bad_mode ();
}
void do_fiq (struct pt_regs *pt_regs)
{
printf ("fast interrupt request\n");
show_regs (pt_regs);
bad_mode ();
}
void do_irq (struct pt_regs *pt_regs)
{
printf ("interrupt request\n");
show_regs (pt_regs);
bad_mode ();
}
/* The timer functionality is supplied by the Integrator board */
/* - see board/integrator<>.c */

370
cpu/arm_intcm/start.S Normal file
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@ -0,0 +1,370 @@
/*
* armboot - Startup Code for ARM926EJS CPU-core
*
* Copyright (c) 2003 Texas Instruments
*
* ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------
*
* Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
* Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
* Copyright (c) 2002 Gary Jennejohn <gj@denx.de>
* Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
* Copyright (c) 2003 Kshitij <kshitij@ti.com>
*
* 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>
/*
*************************************************************************
*
* Jump vector table
*
*************************************************************************
*/
.globl _start
_start:
b reset
ldr pc, _undefined_instruction
ldr pc, _software_interrupt
ldr pc, _prefetch_abort
ldr pc, _data_abort
ldr pc, _not_used
ldr pc, _irq
ldr pc, _fiq
_undefined_instruction:
.word undefined_instruction
_software_interrupt:
.word software_interrupt
_prefetch_abort:
.word prefetch_abort
_data_abort:
.word data_abort
_not_used:
.word not_used
_irq:
.word irq
_fiq:
.word fiq
.balignl 16,0xdeadbeef
/*
*************************************************************************
*
* Startup Code (reset vector)
*
* do important init only if we don't start from memory!
* setup memory and board specific bits prior to relocation.
* relocate armboot to ram
* setup stack
*
*************************************************************************
*/
_TEXT_BASE:
.word TEXT_BASE /* address of _start in the linked image */
.globl _armboot_start
_armboot_start:
.word _start
/*
* These are defined in the board-specific linker script.
*/
.globl _bss_start
_bss_start:
.word __bss_start
.globl _bss_end
_bss_end:
.word _end
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
IRQ_STACK_START:
.word 0x0badc0de
/* IRQ stack memory (calculated at run-time) */
.globl FIQ_STACK_START
FIQ_STACK_START:
.word 0x0badc0de
#endif
/*
* the actual reset code
*/
.globl reset
reset:
/*
* set the cpu to SVC32 mode
*/
mrs r0,cpsr
bic r0,r0,#0x1f
orr r0,r0,#0xd3
msr cpsr,r0
/*
* we do sys-critical inits only at reboot,
* not when booting from ram!
*/
#ifdef CONFIG_INIT_CRITICAL
bl cpu_init_crit
#endif
relocate: /* relocate U-Boot to RAM */
adr r0, _start /* pc relative address of label */
ldr r1, _TEXT_BASE /* linked image address of label */
cmp r0, r1 /* test if we run from flash or RAM */
beq stack_setup /* ifeq we are in the RAM copy */
ldr r2, _armboot_start
ldr r3, _bss_start
sub r2, r3, r2 /* r2 <- size of armboot */
add r2, r0, r2 /* r2 <- source end address */
copy_loop:
ldmia r0!, {r3-r10} /* copy from source address [r0] */
stmia r1!, {r3-r10} /* copy to target address [r1] */
cmp r0, r2 /* until source end addreee [r2] */
ble copy_loop
/* Set up the stack */
stack_setup:
ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
sub r0, r0, #CFG_MALLOC_LEN /* malloc area */
sub r0, r0, #CFG_GBL_DATA_SIZE /* bdinfo */
#ifdef CONFIG_USE_IRQ
sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
#endif
sub sp, r0, #12 /* leave 3 words for abort-stack */
clear_bss:
ldr r0, _bss_start /* find start of bss segment */
ldr r1, _bss_end /* stop here */
mov r2, #0x00000000 /* clear */
clbss_l:str r2, [r0] /* clear loop... */
add r0, r0, #4
cmp r0, r1
ble clbss_l
ldr pc, _start_armboot
_start_armboot:
.word start_armboot
/*
*************************************************************************
*
* CPU_init_critical registers
*
* setup important registers
* setup memory timing
*
*************************************************************************
*/
cpu_init_crit:
/* arm_int_generic assumes the ARM boot monitor, or user software,
* has initialized the platform
*/
mov pc, lr /* back to my caller */
/*
*************************************************************************
*
* Interrupt handling
*
*************************************************************************
*/
@
@ IRQ stack frame.
@
#define S_FRAME_SIZE 72
#define S_OLD_R0 68
#define S_PSR 64
#define S_PC 60
#define S_LR 56
#define S_SP 52
#define S_IP 48
#define S_FP 44
#define S_R10 40
#define S_R9 36
#define S_R8 32
#define S_R7 28
#define S_R6 24
#define S_R5 20
#define S_R4 16
#define S_R3 12
#define S_R2 8
#define S_R1 4
#define S_R0 0
#define MODE_SVC 0x13
#define I_BIT 0x80
/*
* use bad_save_user_regs for abort/prefetch/undef/swi ...
* use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
*/
.macro bad_save_user_regs
@ carve out a frame on current user stack
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12
ldr r2, _armboot_start
sub r2, r2, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN)
sub r2, r2, #(CFG_GBL_DATA_SIZE+8) @ set base 2 words into abort stack
@ get values for "aborted" pc and cpsr (into parm regs)
ldmia r2, {r2 - r3}
add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack
add r5, sp, #S_SP
mov r1, lr
stmia r5, {r0 - r3} @ save sp_SVC, lr_SVC, pc, cpsr
mov r0, sp @ save current stack into r0 (param register)
.endm
.macro irq_save_user_regs
sub sp, sp, #S_FRAME_SIZE
stmia sp, {r0 - r12} @ Calling r0-r12
@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
add r8, sp, #S_PC
stmdb r8, {sp, lr}^ @ Calling SP, LR
str lr, [r8, #0] @ Save calling PC
mrs r6, spsr
str r6, [r8, #4] @ Save CPSR
str r0, [r8, #8] @ Save OLD_R0
mov r0, sp
.endm
.macro irq_restore_user_regs
ldmia sp, {r0 - lr}^ @ Calling r0 - lr
mov r0, r0
ldr lr, [sp, #S_PC] @ Get PC
add sp, sp, #S_FRAME_SIZE
subs pc, lr, #4 @ return & move spsr_svc into cpsr
.endm
.macro get_bad_stack
ldr r13, _armboot_start @ setup our mode stack
sub r13, r13, #(CONFIG_STACKSIZE+CFG_MALLOC_LEN)
sub r13, r13, #(CFG_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack
str lr, [r13] @ save caller lr in position 0 of saved stack
mrs lr, spsr @ get the spsr
str lr, [r13, #4] @ save spsr in position 1 of saved stack
mov r13, #MODE_SVC @ prepare SVC-Mode
@ msr spsr_c, r13
msr spsr, r13 @ switch modes, make sure moves will execute
mov lr, pc @ capture return pc
movs pc, lr @ jump to next instruction & switch modes.
.endm
.macro get_irq_stack @ setup IRQ stack
ldr sp, IRQ_STACK_START
.endm
.macro get_fiq_stack @ setup FIQ stack
ldr sp, FIQ_STACK_START
.endm
/*
* exception handlers
*/
.align 5
.globl undefined_instruction
undefined_instruction:
get_bad_stack
bad_save_user_regs
bl do_undefined_instruction
.align 5
.globl software_interrupt
software_interrupt:
get_bad_stack
bad_save_user_regs
bl do_software_interrupt
.align 5
.globl prefetch_abort
prefetch_abort:
get_bad_stack
bad_save_user_regs
bl do_prefetch_abort
.align 5
.globl data_abort
data_abort:
get_bad_stack
bad_save_user_regs
bl do_data_abort
.align 5
.globl not_used
not_used:
get_bad_stack
bad_save_user_regs
bl do_not_used
#ifdef CONFIG_USE_IRQ
.align 5
.globl irq
irq:
get_irq_stack
irq_save_user_regs
bl do_irq
irq_restore_user_regs
.align 5
.globl fiq
fiq:
get_fiq_stack
/* someone ought to write a more effiction fiq_save_user_regs */
irq_save_user_regs
bl do_fiq
irq_restore_user_regs
#else
.align 5
.globl irq
irq:
get_bad_stack
bad_save_user_regs
bl do_irq
.align 5
.globl fiq
fiq:
get_bad_stack
bad_save_user_regs
bl do_fiq
#endif

66
doc/README-integrator Normal file
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U-Boot for ARM Integrator Development Platforms
Peter Pearse, ARM Ltd.
peter.pearse@arm.com
www.arm.com
Manuals available from :-
http://www.arm.com/products/DevTools/Hardware_Platforms.html
Overview :
--------
There are two Integrator variants - Integrator/AP and Integrator/CP.
Each may be fitted with a variety of core modules (CMs).
Each CM consists of a ARM processor core and associated hardware e.g
FPGA implementing various controllers and/or register
SSRAM
SDRAM
RAM controllers
clock generators etc.
Boot Methods :
------------
Integrator platforms can be configured to use U-Boot in at least three ways :-
a) Run ARM boot monitor, manually run U-Boot image from flash
b) Run ARM boot monitor, automatically run U-Boot image from flash
c) Run U-Boot image direct from flash.
In cases a) and b) the ARM boot monitor will have configured the CM and mapped
writeable memory to 0x00000000 in the Integrator address space.
U-Boot has to carry out minimal configration before standard code is run.
In case c) it may be necessary for U-Boot to perform CM dependent initialization.
Configuring U-Boot :
------------------
The makefile contains targets for Integrator platforms of both types
fitted with all current variants of CM. If these targets are to be used with
boot process c) above then CONFIG_INIT_CRITICAL may need to be defined to ensure
that the CM is correctly configured.
There are also targets independent of CM. These may not be suitable for
boot process c) above. They have been preserved for backward compatibility with
existing build processes.
Code Hierarchy Applied :
----------------------
Code specific to initialization of a particular ARM processor has been placed in
cpu/arm<>/start.S so that it may be used by other boards.
However, to avoid duplicating code through all processor files, a generic core
for ARM Integrator CMs has been added
cpu/arm_intcm
Otherwise. for example, the standard CM reset via the CM control register would
need placing in each CM processor file......
Code specific to the initialization of the CM, rather than the cpu, and initialization
of the Integrator board itself, has been placed in
board/integrator<>/platform.S
board/integrator<>/integrator<>.c

8
include/arm946es.h Normal file
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@ -0,0 +1,8 @@
/************************************************
* NAME arm946es.h *
* $Version$ *
************************************************/
/* Currently empty */
#ifndef __ARM946ES_H__
#define __ARM946ES_H__
#endif /*__ARM946ES_H__*/

49
include/configs/integratorap.h
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@ -27,23 +27,18 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __CONFIG_H
#define __CONFIG_H
/*
* High Level Configuration Options
* (easy to change)
*/
#define CONFIG_ARM926EJS 1 /* This is an arm926ejs CPU core */
#define CONFIG_INTEGRATOR 1 /* in an Integrator board */
#define CONFIG_ARCH_CINTEGRATOR 1 /* Specifically, a CP */
#define CFG_MEMTEST_START 0x100000
#define CFG_MEMTEST_END 0x10000000
#define CFG_HZ (1000000 / 256) /* Timer 1 is clocked at 1Mhz, with 256 divider */
#define CFG_TIMERBASE 0x13000100
#define CFG_MEMTEST_START 0x100000
#define CFG_MEMTEST_END 0x10000000
#define CFG_HZ 1000
#define CFG_HZ_CLOCK 24000000 /* Timer 1 is clocked at 24Mhz */
#define CFG_TIMERBASE 0x13000100 /* Timer1 */
#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
#define CONFIG_SETUP_MEMORY_TAGS 1
@ -120,8 +115,8 @@
#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
#define PHYS_FLASH_SIZE 0x01000000 /* 16MB */
/* timeout values are in ticks */
#define CFG_FLASH_ERASE_TOUT (20*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT (20*CFG_HZ) /* Timeout for Flash Write */
#define CFG_FLASH_ERASE_TOUT (2*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT (2*CFG_HZ) /* Timeout for Flash Write */
#define CFG_MAX_FLASH_SECT 128
#define CFG_ENV_SIZE 32768
@ -131,7 +126,7 @@
* PCI definitions
*/
/*#define CONFIG_PCI /--* include pci support */
/*#define CONFIG_PCI /--* include pci support */
#undef CONFIG_PCI_PNP
#define CONFIG_PCI_SCAN_SHOW 1 /* show pci devices on startup */
#define DEBUG
@ -267,5 +262,31 @@
#define INTEGRATOR_SC_PCIENABLE \
(INTEGRATOR_SC_BASE + INTEGRATOR_SC_PCIENABLE_OFFSET)
/*-----------------------------------------------------------------------
* There are various dependencies on the core module (CM) fitted
* Users should refer to their CM user guide
* - when porting adjust u-boot/Makefile accordingly
* to define the necessary CONFIG_ s for the CM involved
* see e.g. integratorcp_CM926EJ-S_config
*/
#define CM_BASE 0x10000000
/* CM registers common to all integrator/CP CMs */
#define OS_CTRL 0x0000000C
#define CMMASK_REMAP 0x00000005 /* Set remap & led */
#define CMMASK_RESET 0x00000008
#define OS_LOCK 0x00000014
#define CMVAL_LOCK 0x0000A000 /* Locking value */
#define CMMASK_LOCK 0x0000005F /* Locking value */
#define CMVAL_UNLOCK 0x00000000 /* Any value != CM_LOCKVAL */
#define OS_SDRAM 0x00000020
#define OS_INIT 0x00000024
#define CMMASK_MAP_SIMPLE 0xFFFDFFFF /* simple mapping */
#define CMMASK_TCRAM_DISABLE 0xFFFEFFFF /* TCRAM disabled */
#ifdef CONFIG_CM_SPD_DETECT
#define OS_SPD 0x00000100 /* The SDRAM SPD data is copied here */
#endif
#endif /* __CONFIG_H */

102
include/configs/integratorcp.h
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@ -35,23 +35,15 @@
* High Level Configuration Options
* (easy to change)
*/
#if 1
#define CONFIG_ARM926EJS 1 /* This is an arm926ejs CPU core */
#else
#define CONFIG_ARM946ES 1 /* This is an arm946es CPU core */
#endif
#define CONFIG_INTEGRATOR 1 /* in an Integrator board */
#define CONFIG_ARCH_CINTEGRATOR 1 /* Specifically, a CP */
#define CFG_MEMTEST_START 0x100000
#define CFG_MEMTEST_END 0x10000000
#define CFG_HZ 1000
#define CFG_HZ_CLOCK 1000000 /* Timer 1 is clocked at 1Mhz */
#define CFG_TIMERBASE 0x13000100
#define CFG_MEMTEST_START 0x100000
#define CFG_MEMTEST_END 0x10000000
#define CFG_HZ (1000000 / 256) /* Timer 1 is clocked at 1Mhz, with 256 divider */
#define CFG_TIMERBASE 0x13000100
#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
#define CONFIG_SETUP_MEMORY_TAGS 1
#define CONFIG_MISC_INIT_R 1 /* call misc_init_r during start up */
#define CONFIG_MISC_INIT_R 1 /* call misc_init_r during start up */
/*
* Size of malloc() pool
*/
@ -96,6 +88,16 @@
#define CONFIG_BOOTCOMMAND "bootp ; bootm"
#endif
/* Flash loaded
- U-Boot
- u-linux
- system.cramfs
*/
#define CONFIG_BOOTDELAY 2
#define CONFIG_BOOTARGS "root=/dev/mtdblock2 mem=128M ip=dhcp netdev=27,0, \
0xfc800000,0xfc800010,eth0 video=clcdfb:0"
#define CONFIG_BOOTCOMMAND "cp 0x24040000 0x7fc0 0x80000; bootm"
/*
* Miscellaneous configurable options
*/
@ -135,8 +137,8 @@
#define CFG_MAX_FLASH_SECT 64
#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
#define PHYS_FLASH_SIZE 0x01000000 /* 16MB */
#define CFG_FLASH_ERASE_TOUT (20*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT (20*CFG_HZ) /* Timeout for Flash Write */
#define CFG_FLASH_ERASE_TOUT (2*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT (2*CFG_HZ) /* Timeout for Flash Write */
#define CFG_MONITOR_BASE 0x24F40000
#define CFG_ENV_IS_IN_FLASH
@ -144,4 +146,70 @@
#define CFG_ENV_SECT_SIZE 0x40000 /* 256KB */
#define CFG_ENV_SIZE 8192 /* 8KB */
/*-----------------------------------------------------------------------
* There are various dependencies on the core module (CM) fitted
* Users should refer to their CM user guide
* - when porting adjust u-boot/Makefile accordingly
* to define the necessary CONFIG_ s for the CM involved
* see e.g. integratorcp_CM926EJ-S_config
*/
#define CM_BASE 0x10000000
/* CM registers common to all integrator/CP CMs */
#define OS_CTRL 0x0000000C
#define CMMASK_REMAP 0x00000005 /* set remap & led */
#define CMMASK_RESET 0x00000008
#define OS_LOCK 0x00000014
#define CMVAL_LOCK 0x0000A000 /* locking value */
#define CMMASK_LOCK 0x0000005F /* locking value */
#define CMVAL_UNLOCK 0x00000000 /* any value != CM_LOCKVAL */
#define OS_SDRAM 0x00000020
#define OS_INIT 0x00000024
#define CMMASK_MAP_SIMPLE 0xFFFDFFFF /* simple mapping */
#define CMMASK_TCRAM_DISABLE 0xFFFEFFFF /* TCRAM disabled */
#define CMMASK_LOWVEC 0x00000004 /* vectors @ 0x00000000 */
#if defined (CONFIG_CM10200E) || defined (CONFIG_CM10220E)
#define CMMASK_INIT_102 0x00000300 /* see CM102xx ref manual
* - PLL test clock bypassed
* - bus clock ratio 2
* - little endian
* - vectors at zero
*/
#endif /* CM1022xx */
#define CMMASK_LE 0x00000008 /* little endian */
#define CMMASK_CMxx6_COMMON 0x00000100 /* Common value for CMxx6
* - divisor/ratio b00000001
* bx
* - HCLKDIV b000
* bxx
* - PLL BYPASS b00
*/
/* Determine CM characteristics */
#undef CONFIG_CM_MULTIPLE_SSRAM
#undef CONFIG_CM_SPD_DETECT
#undef CONFIG_CM_REMAP
#undef CONFIG_CM_INIT
#undef CONFIG_CM_TCRAM
#if defined (CONFIG_CM946E_S) || defined (CONFIG_CM966E_S)
#define CONFIG_CM_MULTIPLE_SSRAM /* CM has multiple SSRAM mapping */
#endif
#ifndef CONFIG_CM922t_XA10
#define CONFIG_CM_SPD_DETECT /* CM supports SPD query */
#define OS_SPD 0x00000100 /* Address of SPD data */
#define CONFIG_CM_REMAP /* CM supports remapping */
#define CONFIG_CM_INIT /* CM has initialization reg */
#endif
#if defined(CONFIG_CM926EJ_S) || defined (CONFIG_CM946E_S) || \
defined(CONFIG_CM966E_S) || defined (CONFIG_CM1026EJ_S) || \
defined(CONFIG_CM1136JF_S)
#define CONFIG_CM_TCRAM /* CM has TCRAM */
#endif
#endif /* __CONFIG_H */