[U-Boot] arm, omap3, beagle: initial stack pointer setup
Heiko Schocher
hs at denx.de
Wed Oct 27 08:26:48 CEST 2010
Hello Steve,
today morning I tried actual u-boot on the beagle board, and I couldn;t
compile it because a problem with the GENERATED_GBL_DATA_SIZE changes.
In this context the question raised, if the
#define CONFIG_SYS_INIT_SP_ADDR (LOW_LEVEL_SRAM_STACK - GENERATED_GBL_DATA_SIZE)
setup with using LOW_LEVEL_SRAM_STACK @ 0x4020FFFC is OK?
The address
a) it is not aligned
b) We should use CONFIG_SYS_INIT_RAM_SIZE and CONFIG_SYS_INIT_RAM_ADDR
So my question:
shouldn;t we add in "arch/arm/include/asm/arch-omap3/omap3.h" or
"include/asm/arch/cpu.h"? this 2 missing defines (described in b)),
and change in all omap3 plattforms
#define CONFIG_SYS_INIT_SP_ADDR (LOW_LEVEL_SRAM_STACK - GENERATED_GBL_DATA_SIZE)
to
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
CONFIG_SYS_INIT_RAM_SIZE - \
GENERATED_GBL_DATA_SIZE)
With
CONFIG_SYS_INIT_RAM_ADDR (SRAM_VECT_CODE)
^
0x4020f800
CONFIG_SYS_INIT_RAM_SIZE 0x7f0
What do you think?
bye,
Heiko
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