Lpc2000

Hi,

Does anyone know how to get code into the external flash of this 
header board, and run from there? 

Is it possible to use the Philips flash utility to do it, or have to 
use something else?

Thanks,

Joe

hi,

Olimex has provided the sample codes to program the external flash of 
LPC-H2294 at their web site. You would need to refer to the user 
manual of LPC221x to boot from external flash.

Philips flash utility is used to program the internal flash of LPC 
chip. 

regards,
Tim.
http://www.embeddedhub.com/

--- In lpc2000@yahoogroups.com, "litevelocity" <litevelocity@...> 
wrote:

>
> Hi,
> 
> Does anyone know how to get code into the external flash of this 
> header board, and run from there? 
> 
> Is it possible to use the Philips flash utility to do it, or have to 
> use something else?
> 
> Thanks,
> 
> Joe
>

Hi,
is it possible to save some routines into the external flash (but 
boot into the internal one..) ?
I try to modify my linker script adding an output section to point 
0x8000.0000 area.
I receive the following errors:

Linking: main.elf
arm-elf-gcc -mthumb -mcpu=arm7tdmi -mthumb-interwork -I. -gdwarf-2 -
DROM_RUN  -O0 -Wall -Wcast-align -Wcast-qual -Wimplicit  -Wpointer-
arith -Wswitch -Wredundant-decls -Wreturn-type -Wshadow -Wunused -Wa,-
adhlns=crt0.lst   -MD -MP -MF .dep/main.elf.d crt0.o   lcd.o system.o 
buttons.o LPC_uart.o LPC_Vic.o adc.o armVIC.o ram.o main.o     --
output main.elf -nostartfiles -Wl,-Map=main.map,--cref -lc  -lm -lc -
lgcc -TLPC2214-ROM.ld

ram.o: In function `RAM_read':
/cygdrive/j/Progetti/Lpc/Progetti/FlashExt/ram.c:38: relocation 
truncated to fit: R_ARM_PC24 against symbol `LCDSendCommand' defined 
in .text section in lcd.o
/cygdrive/j/Progetti/Lpc/Progetti/FlashExt/ram.c:47: relocation 
truncated to fit: R_ARM_PC24 against symbol `LCDSendChar' defined 
in .text section in lcd.o
ram.o: In function `RAM_read_rev':
/cygdrive/j/Progetti/Lpc/Progetti/FlashExt/ram.c:55: relocation 
truncated to fit: R_ARM_PC24 against symbol `LCDSendCommand' defined 
in .text section in lcd.o
collect2: ld returned 1 exit status
make: *** [main.elf] Error 1

ram.o is the object code defined in the linker script as:
...
	.text.extFlash :
	{
		ram.o
	} > flash_ext = 0xFF

	prog :
	{
		*(.text)
		*(.rodata)
		*(.rodata*)
		*(.glue_7)
		*(.glue_7t)
	} >flash = 0xFF
...

Thanks !
--
SM


--- In lpc2000@yahoogroups.com, "EmbeddedHub" <tim@...> wrote:
>
> hi,
> 
> Olimex has provided the sample codes to program the external flash 
of 
> LPC-H2294 at their web site. You would need to refer to the user 
> manual of LPC221x to boot from external flash.
> 
> Philips flash utility is used to program the internal flash of LPC 
> chip. 
> 
> regards,
> Tim.
> http://www.embeddedhub.com/
> 
> --- In lpc2000@yahoogroups.com, "litevelocity" <litevelocity@> 
> wrote:
> >
> > Hi,
> > 
> > Does anyone know how to get code into the external flash of this 
> > header board, and run from there? 
> > 
> > Is it possible to use the Philips flash utility to do it, or have 
to 

> > use something else?
> > 
> > Thanks,
> > 
> > Joe
> >
>

---- Original Message ----

From: "stefano_m_a" <stefano_mora@...>
To: <lpc2000@yahoogroups.com>
Sent: Thursday, May 25, 2006 2:47 PM
Subject: [lpc2000] Re: Olimex LPC2294H external flash

> is it possible to save some routines into the external flash (but
> boot into the internal one..) ?
> I try to modify my linker script adding an output section to point
> 0x8000.0000 area.
> I receive the following errors:
>
> Linking: main.elf
> arm-elf-gcc -mthumb -mcpu=arm7tdmi -mthumb-interwork -I. -gdwarf-2 -
> DROM_RUN  -O0 -Wall -Wcast-align -Wcast-qual -Wimplicit  -Wpointer-
> arith -Wswitch -Wredundant-decls -Wreturn-type -Wshadow -Wunused -Wa,-
> adhlns=crt0.lst   -MD -MP -MF .dep/main.elf.d crt0.o   lcd.o system.o
> buttons.o LPC_uart.o LPC_Vic.o adc.o armVIC.o ram.o main.o     --
> output main.elf -nostartfiles -Wl,-Map=main.map,--cref -lc  -lm -lc -
> lgcc -TLPC2214-ROM.ld
>
> ram.o: In function `RAM_read':
> /cygdrive/j/Progetti/Lpc/Progetti/FlashExt/ram.c:38: relocation
> truncated to fit: R_ARM_PC24 against symbol `LCDSendCommand' defined
> in .text section in lcd.o
> /cygdrive/j/Progetti/Lpc/Progetti/FlashExt/ram.c:47: relocation
> truncated to fit: R_ARM_PC24 against symbol `LCDSendChar' defined
> in .text section in lcd.o
> ram.o: In function `RAM_read_rev':
> /cygdrive/j/Progetti/Lpc/Progetti/FlashExt/ram.c:55: relocation
> truncated to fit: R_ARM_PC24 against symbol `LCDSendCommand' defined
> in .text section in lcd.o
> collect2: ld returned 1 exit status
> make: *** [main.elf] Error 1

Internal and external flash are further apart than can be spanned by a bl 
instruction, so you cannot call from internal to external flash or 
vice-versa with normal bl instructions.  Try:

/* file1.c */
int ext_flash_function (int i)  __attribute__((long_call));

int int_flash_function (void)
{
  ext_flash_function(1);
}

/* file2.c */
int ext_flash_function (int i)
{
  return i+i;
}


The long_call attribute tells gcc to use an indirect call when calling 
ext_flash_function().  This is larger and slower, but the callee can be 
anywhere in the address space.

Karl Olsen