Hi,
I have a BSP almost identical to STM32F4 except I want a slight change
to the linker settings (I want to offset the start location because
there is a bootloader at location 0).
Two questions:
- Is there any way to do this other than to
a) duplicate the BSP and change just the linker files
b) use the STM32F4 BSP as-is but copy the linker files into the
application project and modify (this is the solution I am using now)
- As a matter of policy, how different should a platform be before we
fork a BSP?
On 29/10/2014 8:07 AM, Joel Sherrill wrote:
On 10/29/2014 10:03 AM, Мороз Олег wrote:
looks like the BSS segment is depend from RAM_SIZE. I'm changing file
called linkcmds:
MEMORY {
RAM_INT : ORIGIN = 0x20000000, LENGTH = 128k
after building has
arm-rtems4.11-size shell.exe
text data bss dec hex filename
364756 32256 98824 495836 790dc shell.exe
.BSS is 98824
MEMORY {
RAM_INT : ORIGIN = 0x20000000, LENGTH = 192k
arm-rtems4.11-size shell.exe
text data bss dec hex filename
364756 32256 164360 561372 890dc shell.exe
.BSS raised up to 164360
MEMORY {
RAM_INT : ORIGIN = 0x20000000, LENGTH = 256K
arm-rtems4.11-size shell.exe
text data bss dec hex filename
364756 32256 229896 626908 990dc shell.exe
How can i fix the BSS size?
Sebastian should look into this but as a quick hint, the symbol marking
bss end sounds like it is after something indicating end of RAM. I have
seen this on other BSPs but the ARM linkcmds is shared, Sebastian did the
magic for that.
You should be able to spot the issue since you have test cases.
On 14.10.2014 14:47, Мороз Олег wrote:
arm-rtems4.11-readelf -l shell.exe
Elf file type is EXEC (Executable file)
Entry point 0x8000189
There are 4 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg
Align
EXIDX 0x027aa0 0x080279e8 0x080279e8 0x00008 0x00008 R
0x4
LOAD 0x0000b8 0x08000000 0x08000000 0x27a00 0x27a00 RWE
0x8
LOAD 0x027ab8 0x20001188 0x08027a00 0x0061c 0x0061c RW
0x8
LOAD 0x0280e0 0x20000000 0x20000000 0x00000 0x30000 RW
0x20
Section to Segment mapping:
Segment Sections...
00 .ARM.exidx
01 .start .text .init .fini .rodata .ARM.exidx .eh_frame
.init_array .fini_array .jcr
02 .data
03 .vector .bss .work
On 14.10.2014 14:10, Sebastian Huber wrote:
arm-rtems4.11-readelf -l
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