Hi,
is there any reasonable way to reserve some small flash sectors embedded inside U-Boot for other usage ?
Example :
2 sectors @ 0-16k U-boot start including initial code @ reset vector. 1 sector @ 16k-24k e.g. environment. 2 sectors @ 24k-40k reserved (small linux mtd partitions). ? sectors @ 40k+ remaining U-Boot code.
Back with U-Boot 1.1.4 I used the board's local u-boot.lds like this :
[snip]... .text : { cpu/mpc5xxx/start.o (.text) lib_ppc/board.o (.text) lib_ppc/interrupts.o (.text) lib_ppc/ticks.o (.text)
. = DEFINED(env_offset) ? env_offset : .; common/environment.o (.text)
. = DEFINED(CFG_ENV_ADD_SPACE) ? (. + CFG_ENV_ADD_SPACE) : .;
*(.text) *(.fixup) [snip]...
The primary goal is to create a dedicated sector holding the auto/boot script being available through a nested mtd partition.
Since the flash is completely used up there's no chance using sectors outside of U-Boot.
Any hints are welcome.
Regards, André
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