* [U-Boot] Instruction WFI gives error at build time.
@ 2011-09-22 9:17 Sandeep Kumar
2011-09-22 9:40 ` Nick Thompson
2011-09-22 9:59 ` Aneesh V
0 siblings, 2 replies; 3+ messages in thread
From: Sandeep Kumar @ 2011-09-22 9:17 UTC (permalink / raw)
To: u-boot
Hi,
I am adding support for a MPcore SoC in Uboot. For that secondary cores
need to execute WFI (wait for interrupt) instruction.
But while building the source I am getting the following error:
arm-none-eabi-gcc -D__ASSEMBLY__ -g -Os -fno-common -ffixed-r8
-msoft-float -D__KERNEL__ -DCONFIG_SYS_TEXT_BASE=0x60800000
-I/media/disk/work/u-boot_ct11mpc_osi_evs/include -fno-builtin
-ffreestanding -nostdinc -isystem
/home/sandeepk/CodeSourcery/Sourcery_G++_Lite/bin/../lib/gcc/arm-none-ea
bi/4.5.2/include -pipe -DCONFIG_ARM -D__ARM__ -marm -mabi=aapcs-linux
-mno-thumb-interwork -march=armv5 -o lowlevel_init.o lowlevel_init.S
-c
lowlevel_init.S: Assembler messages:
lowlevel_init.S:92: Error: missing expression -- `swi'
make[1]: *** [lowlevel_init.o] Error 1
make[1]: Leaving directory
`/media/disk/work/u-boot_ct11mpc_osi_evs/board/armltd/versatile_11mpc'
make: *** [board/armltd/versatile_11mpc/libversatile_11mpc.o] Error 2
How can I implement this instruction or how can I directly insert the
hex code for this instruction.
Regards,
Sandeep
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] Instruction WFI gives error at build time.
2011-09-22 9:17 [U-Boot] Instruction WFI gives error at build time Sandeep Kumar
@ 2011-09-22 9:40 ` Nick Thompson
2011-09-22 9:59 ` Aneesh V
1 sibling, 0 replies; 3+ messages in thread
From: Nick Thompson @ 2011-09-22 9:40 UTC (permalink / raw)
To: u-boot
On 22/09/11 10:17, Sandeep Kumar wrote:
> Hi,
>
>
>
> I am adding support for a MPcore SoC in Uboot. For that secondary cores
> need to execute WFI (wait for interrupt) instruction.
>
> But while building the source I am getting the following error:
>
>
>
> arm-none-eabi-gcc -D__ASSEMBLY__ -g -Os -fno-common -ffixed-r8
> -msoft-float -D__KERNEL__ -DCONFIG_SYS_TEXT_BASE=0x60800000
> -I/media/disk/work/u-boot_ct11mpc_osi_evs/include -fno-builtin
> -ffreestanding -nostdinc -isystem
> /home/sandeepk/CodeSourcery/Sourcery_G++_Lite/bin/../lib/gcc/arm-none-ea
> bi/4.5.2/include -pipe -DCONFIG_ARM -D__ARM__ -marm -mabi=aapcs-linux
> -mno-thumb-interwork -march=armv5 -o lowlevel_init.o lowlevel_init.S
> -c
>
> lowlevel_init.S: Assembler messages:
>
> lowlevel_init.S:92: Error: missing expression -- `swi'
I'm not sure this is a u-boot question and you didn't show your code (I assume
you changed the file).
'swi' is not a WFI. swi takes a expression - the software interrupt number you
want to pass to the software interrupt exception routine. Your routine is free
to ignore that number, but a 'swi' must have one to have the correct syntax.
WFI on ARM SoC's is usually some kind of register write, specific to that SoC.
Nick.
> make[1]: *** [lowlevel_init.o] Error 1
>
> make[1]: Leaving directory
> `/media/disk/work/u-boot_ct11mpc_osi_evs/board/armltd/versatile_11mpc'
>
> make: *** [board/armltd/versatile_11mpc/libversatile_11mpc.o] Error 2
>
>
>
> How can I implement this instruction or how can I directly insert the
> hex code for this instruction.
>
>
>
> Regards,
>
> Sandeep
>
>
>
>
>
>
>
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot] Instruction WFI gives error at build time.
2011-09-22 9:17 [U-Boot] Instruction WFI gives error at build time Sandeep Kumar
2011-09-22 9:40 ` Nick Thompson
@ 2011-09-22 9:59 ` Aneesh V
1 sibling, 0 replies; 3+ messages in thread
From: Aneesh V @ 2011-09-22 9:59 UTC (permalink / raw)
To: u-boot
Hi Sandeep,
On Thursday 22 September 2011 02:47 PM, Sandeep Kumar wrote:
> Hi,
>
>
>
> I am adding support for a MPcore SoC in Uboot. For that secondary cores
> need to execute WFI (wait for interrupt) instruction.
>
> But while building the source I am getting the following error:
>
>
>
> arm-none-eabi-gcc -D__ASSEMBLY__ -g -Os -fno-common -ffixed-r8
> -msoft-float -D__KERNEL__ -DCONFIG_SYS_TEXT_BASE=0x60800000
> -I/media/disk/work/u-boot_ct11mpc_osi_evs/include -fno-builtin
> -ffreestanding -nostdinc -isystem
> /home/sandeepk/CodeSourcery/Sourcery_G++_Lite/bin/../lib/gcc/arm-none-ea
> bi/4.5.2/include -pipe -DCONFIG_ARM -D__ARM__ -marm -mabi=aapcs-linux
> -mno-thumb-interwork -march=armv5 -o lowlevel_init.o lowlevel_init.S
> -c
>
> lowlevel_init.S: Assembler messages:
>
> lowlevel_init.S:92: Error: missing expression -- `swi'
Are you trying to use WFI or SWI?
>
> make[1]: *** [lowlevel_init.o] Error 1
>
> make[1]: Leaving directory
> `/media/disk/work/u-boot_ct11mpc_osi_evs/board/armltd/versatile_11mpc'
>
> make: *** [board/armltd/versatile_11mpc/libversatile_11mpc.o] Error 2
>
>
>
> How can I implement this instruction or how can I directly insert the
> hex code for this instruction.
A '.word' directive with the hex value of the instruction should work.
See this:
http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/88649/focus=88667
br,
Aneesh
>
>
>
> Regards,
>
> Sandeep
>
>
>
>
>
>
>
>
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-09-22 9:17 [U-Boot] Instruction WFI gives error at build time Sandeep Kumar
2011-09-22 9:40 ` Nick Thompson
2011-09-22 9:59 ` Aneesh V
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