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Re: Redboot :: __startup_stack
On Fri, Jul 01, 2005 at 10:09:49AM +0530, Harsha D wrote:
> Hi
>
> ===============================================================
> Porting : Redboot
> Platform : ARM922T based board
> source base : based on Excalibur package
>
> ===============================================================
> Memory layout is
> --------------------------
> SRAM(32KB) 0x00000000 - 0x00008000
> RAM(32MB) 0x20000000 - 0x02000000
>
> ===============================================================
> My ram ldi file
> ---------------------
> MEMORY
> {
> ram : ORIGIN = 0x20000000, LENGTH = 0x02000000
> }
>
> SECTIONS
> {
> SECTIONS_BEGIN
> SECTION_fixed_vectors (ram, 0x20000020, LMA_EQ_VMA)
> SECTION_rom_vectors (ram, 0x20300000, LMA_EQ_VMA)
> SECTION_text (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_fini (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_rodata (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_rodata1 (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_fixup (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_gcc_except_table (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_data (ram, ALIGN (0x4), LMA_EQ_VMA)
> SECTION_bss (ram, ALIGN (0x4), LMA_EQ_VMA)
> CYG_LABEL_DEFN(__heap1) = ALIGN (0x8);
> SECTIONS_END
> }
....
> [ I am loading redboot at 0x20300000]
> Googling told me that
> fixed_vectors should be at 0x20(???) which is not the case for me.
> Will it cause any problems ? If yes then how should i have my memory layout.
SECTION_fixed_vectors (ram, 0x20000020, LMA_EQ_VMA)
Add an sram memory region and change this to 0x20 and the fixed
vectors will move.
Andrew
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