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adding raspberry pi 2 and A+ and B+ variations on blinker02

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This commit is contained in:
dwelch67
2015-12-23 22:45:03 -05:00
parent 60849d6ce4
commit 501d486b14
11 changed files with 391 additions and 2 deletions
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5
blinker02/README
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@@ -13,5 +13,6 @@ per second.
Hmm, there are comments in the manual about the system clock coming up
at 250MHz. I wonder if this system timer is 250MHz/256 = 0.976MHz.
This directory contains an example for the ARM11 raspberry pi, for the
ARM11 based A+ and B+ see the plus directory and for the Cortex A7 based
raspberry pi 2 see the pi2 directory.

66
blinker02/pi2/Makefile Normal file
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@@ -0,0 +1,66 @@
ARMGNU ?= arm-none-eabi
COPS = -Wall -O2 -nostdlib -nostartfiles -ffreestanding
gcc : blinker02.hex blinker02.bin
all : gcc clang
clean :
rm -f *.o
rm -f *.bin
rm -f *.hex
rm -f *.elf
rm -f *.list
rm -f *.img
rm -f *.bc
rm -f *.clang.opt.s
vectors.o : vectors.s
$(ARMGNU)-as vectors.s -o vectors.o
blinker02.o : blinker02.c
$(ARMGNU)-gcc $(COPS) -c blinker02.c -o blinker02.o
blinker02.elf : memmap vectors.o blinker02.o
$(ARMGNU)-ld vectors.o blinker02.o -T memmap -o blinker02.elf
$(ARMGNU)-objdump -D blinker02.elf > blinker02.list
blinker02.bin : blinker02.elf
$(ARMGNU)-objcopy blinker02.elf -O binary blinker02.bin
blinker02.hex : blinker02.elf
$(ARMGNU)-objcopy blinker02.elf -O ihex blinker02.hex
LOPS = -Wall -m32 -emit-llvm
LLCOPS = -march=arm -mcpu=arm1176jzf-s
LLCOPS0 = -march=arm
LLCOPS1 = -march=arm -mcpu=arm1176jzf-s
COPS = -Wall -O2 -nostdlib -nostartfiles -ffreestanding
OOPS = -std-compile-opts
clang : blinker02.clang.hex blinker02.clang.bin
blinker02.clang.bc : blinker02.c
clang $(LOPS) -c blinker02.c -o blinker02.clang.bc
blinker02.clang.opt.elf : memmap vectors.o blinker02.clang.bc
opt $(OOPS) blinker02.clang.bc -o blinker02.clang.opt.bc
llc $(LLCOPS) blinker02.clang.opt.bc -o blinker02.clang.opt.s
$(ARMGNU)-as blinker02.clang.opt.s -o blinker02.clang.opt.o
$(ARMGNU)-ld -o blinker02.clang.opt.elf -T memmap vectors.o blinker02.clang.opt.o
$(ARMGNU)-objdump -D blinker02.clang.opt.elf > blinker02.clang.opt.list
blinker02.clang.hex : blinker02.clang.opt.elf
$(ARMGNU)-objcopy blinker02.clang.opt.elf blinker02.clang.hex -O ihex
blinker02.clang.bin : blinker02.clang.opt.elf
$(ARMGNU)-objcopy blinker02.clang.opt.elf blinker02.clang.bin -O binary

9
blinker02/pi2/README Normal file
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@@ -0,0 +1,9 @@
See the top level README for information on where to find the
schematic and programmers reference manual for the ARM processor
on the raspberry pi. Also find information on how to load and run
these programs.
Same as blinker02 in the plus directory except the raspberry pi 2
uses a different base address (0x3F000000) than the raspberry pi 1
(0x20000000) likely to make room for more ram but who knows.

68
blinker02/pi2/blinker02.c Normal file
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@@ -0,0 +1,68 @@
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
extern void PUT32 ( unsigned int, unsigned int );
extern unsigned int GET32 ( unsigned int );
extern void dummy ( unsigned int );
#define SYSTIMERCLO 0x3F003004
#define GPFSEL3 0x3F20000C
#define GPFSEL4 0x3F200010
#define GPSET1 0x3F200020
#define GPCLR1 0x3F20002C
//0x01000000 17 seconds
//0x00400000 4 seconds
#define TIMER_BIT 0x00400000
//-------------------------------------------------------------------------
int notmain ( void )
{
unsigned int ra;
ra=GET32(GPFSEL4);
ra&=~(7<<21);
ra|=1<<21;
PUT32(GPFSEL4,ra);
ra=GET32(GPFSEL3);
ra&=~(7<<15);
ra|=1<<15;
PUT32(GPFSEL3,ra);
while(1)
{
PUT32(GPSET1,1<<(47-32));
PUT32(GPCLR1,1<<(35-32));
while(1)
{
ra=GET32(SYSTIMERCLO);
if((ra&=TIMER_BIT)==TIMER_BIT) break;
}
PUT32(GPCLR1,1<<(47-32));
PUT32(GPSET1,1<<(35-32));
while(1)
{
ra=GET32(SYSTIMERCLO);
if((ra&=TIMER_BIT)==0) break;
}
}
return(0);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
//
// Copyright (c) 2012 David Welch dwelch@dwelch.com
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//-------------------------------------------------------------------------

11
blinker02/pi2/memmap Normal file
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@@ -0,0 +1,11 @@
MEMORY
{
ram : ORIGIN = 0x8000, LENGTH = 0x1000
}
SECTIONS
{
.text : { *(.text*) } > ram
.bss : { *(.bss*) } > ram
}

39
blinker02/pi2/vectors.s Normal file
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@@ -0,0 +1,39 @@
;@ ------------------------------------------------------------------
;@ ------------------------------------------------------------------
.globl _start
_start:
mov sp,#0x8000
bl notmain
hang: b hang
.globl PUT32
PUT32:
str r1,[r0]
bx lr
.globl GET32
GET32:
ldr r0,[r0]
bx lr
.globl dummy
dummy:
bx lr
;@ ------------------------------------------------------------------
;@ ------------------------------------------------------------------
;@-------------------------------------------------------------------------
;@
;@ Copyright (c) 2012 David Welch dwelch@dwelch.com
;@
;@ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
;@
;@ The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
;@
;@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
;@
;@-------------------------------------------------------------------------

66
blinker02/plus/Makefile Normal file
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@@ -0,0 +1,66 @@
ARMGNU ?= arm-none-eabi
COPS = -Wall -O2 -nostdlib -nostartfiles -ffreestanding
gcc : blinker02.hex blinker02.bin
all : gcc clang
clean :
rm -f *.o
rm -f *.bin
rm -f *.hex
rm -f *.elf
rm -f *.list
rm -f *.img
rm -f *.bc
rm -f *.clang.opt.s
vectors.o : vectors.s
$(ARMGNU)-as vectors.s -o vectors.o
blinker02.o : blinker02.c
$(ARMGNU)-gcc $(COPS) -c blinker02.c -o blinker02.o
blinker02.elf : memmap vectors.o blinker02.o
$(ARMGNU)-ld vectors.o blinker02.o -T memmap -o blinker02.elf
$(ARMGNU)-objdump -D blinker02.elf > blinker02.list
blinker02.bin : blinker02.elf
$(ARMGNU)-objcopy blinker02.elf -O binary blinker02.bin
blinker02.hex : blinker02.elf
$(ARMGNU)-objcopy blinker02.elf -O ihex blinker02.hex
LOPS = -Wall -m32 -emit-llvm
LLCOPS = -march=arm -mcpu=arm1176jzf-s
LLCOPS0 = -march=arm
LLCOPS1 = -march=arm -mcpu=arm1176jzf-s
COPS = -Wall -O2 -nostdlib -nostartfiles -ffreestanding
OOPS = -std-compile-opts
clang : blinker02.clang.hex blinker02.clang.bin
blinker02.clang.bc : blinker02.c
clang $(LOPS) -c blinker02.c -o blinker02.clang.bc
blinker02.clang.opt.elf : memmap vectors.o blinker02.clang.bc
opt $(OOPS) blinker02.clang.bc -o blinker02.clang.opt.bc
llc $(LLCOPS) blinker02.clang.opt.bc -o blinker02.clang.opt.s
$(ARMGNU)-as blinker02.clang.opt.s -o blinker02.clang.opt.o
$(ARMGNU)-ld -o blinker02.clang.opt.elf -T memmap vectors.o blinker02.clang.opt.o
$(ARMGNU)-objdump -D blinker02.clang.opt.elf > blinker02.clang.opt.list
blinker02.clang.hex : blinker02.clang.opt.elf
$(ARMGNU)-objcopy blinker02.clang.opt.elf blinker02.clang.hex -O ihex
blinker02.clang.bin : blinker02.clang.opt.elf
$(ARMGNU)-objcopy blinker02.clang.opt.elf blinker02.clang.bin -O binary

11
blinker02/plus/README Normal file
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@@ -0,0 +1,11 @@
See the top level README for information on where to find the
schematic and programmers reference manual for the ARM processor
on the raspberry pi. Also find information on how to load and run
these programs.
Same as blinker02 in the directory above, except the raspberry pi 1
A+ and B+ have two leds one on gpio47 the other gpio35.
I tested this on an A+.

68
blinker02/plus/blinker02.c Normal file
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@@ -0,0 +1,68 @@
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
extern void PUT32 ( unsigned int, unsigned int );
extern unsigned int GET32 ( unsigned int );
extern void dummy ( unsigned int );
#define SYSTIMERCLO 0x20003004
#define GPFSEL3 0x2020000C
#define GPFSEL4 0x20200010
#define GPSET1 0x20200020
#define GPCLR1 0x2020002C
//0x01000000 17 seconds
//0x00400000 4 seconds
#define TIMER_BIT 0x00400000
//-------------------------------------------------------------------------
int notmain ( void )
{
unsigned int ra;
ra=GET32(GPFSEL4);
ra&=~(7<<21);
ra|=1<<21;
PUT32(GPFSEL4,ra);
ra=GET32(GPFSEL3);
ra&=~(7<<15);
ra|=1<<15;
PUT32(GPFSEL3,ra);
while(1)
{
PUT32(GPSET1,1<<(47-32));
PUT32(GPCLR1,1<<(35-32));
while(1)
{
ra=GET32(SYSTIMERCLO);
if((ra&=TIMER_BIT)==TIMER_BIT) break;
}
PUT32(GPCLR1,1<<(47-32));
PUT32(GPSET1,1<<(35-32));
while(1)
{
ra=GET32(SYSTIMERCLO);
if((ra&=TIMER_BIT)==0) break;
}
}
return(0);
}
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
//-------------------------------------------------------------------------
//
// Copyright (c) 2012 David Welch dwelch@dwelch.com
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//-------------------------------------------------------------------------

11
blinker02/plus/memmap Normal file
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@@ -0,0 +1,11 @@
MEMORY
{
ram : ORIGIN = 0x8000, LENGTH = 0x1000
}
SECTIONS
{
.text : { *(.text*) } > ram
.bss : { *(.bss*) } > ram
}

39
blinker02/plus/vectors.s Normal file
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@@ -0,0 +1,39 @@
;@ ------------------------------------------------------------------
;@ ------------------------------------------------------------------
.globl _start
_start:
mov sp,#0x8000
bl notmain
hang: b hang
.globl PUT32
PUT32:
str r1,[r0]
bx lr
.globl GET32
GET32:
ldr r0,[r0]
bx lr
.globl dummy
dummy:
bx lr
;@ ------------------------------------------------------------------
;@ ------------------------------------------------------------------
;@-------------------------------------------------------------------------
;@
;@ Copyright (c) 2012 David Welch dwelch@dwelch.com
;@
;@ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
;@
;@ The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
;@
;@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
;@
;@-------------------------------------------------------------------------