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board: samsung: reserve memory for the secure firmware

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Since more than one board requires memory reservation
for the secure firmware, the reservation code can be
made in a common code.
Now, to reserve some part of the the last bank,
board config should define:
- CONFIG_TZSW_RESERVED_DRAM - len in bytes
- CONFIG_NR_DRAM_BANKS - number of memory banks

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Akshay Saraswat <akshay.s@samsung.com>
Cc: Hyungwon Hwang <human.hwang@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Przemyslaw Marczak 2015-02-17 14:50:25 +01:00 committed by Minkyu Kang
parent c8b71a3528
commit a0643e227a
1 changed files with 6 additions and 0 deletions
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6
board/samsung/common/board.c
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@ -82,7 +82,13 @@ int board_init(void)
}
boot_temp_check();
#endif
#ifdef CONFIG_TZSW_RESERVED_DRAM_SIZE
/* The last few MB of memory can be reserved for secure firmware */
ulong size = CONFIG_TZSW_RESERVED_DRAM_SIZE;
gd->ram_size -= size;
gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= size;
#endif
return exynos_init();
}