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arm:board:trats2:FIX: Clear INFORM4 and INFORM5 registers at correct boot

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During switch to device tree, commit 1ecab0f has removed this code.

INFORM4 and INFORM5 registers are used by TRATS2 first stage bootloader for
providing recovery. For normal operation, those two must be cleared out.

This error emerges when one force reset from u-boot's command line for
three times.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Łukasz Majewski 2014-04-09 15:09:44 +02:00 committed by Tom Rini
parent 395e60cdc2
commit 24542528fe
1 changed files with 13 additions and 0 deletions
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13
board/samsung/trats2/trats2.c
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@ -150,9 +150,22 @@ static int pmic_init_max77686(void);
int exynos_init(void)
{
struct exynos4_power *pwr =
(struct exynos4_power *)samsung_get_base_power();
check_hw_revision();
printf("HW Revision:\t0x%04x\n", board_rev);
/*
* First bootloader on the TRATS2 platform uses
* INFORM4 and INFORM5 registers for recovery
*
* To indicate correct boot chain - those two
* registers must be cleared out
*/
writel(0, &pwr->inform4);
writel(0, &pwr->inform5);
return 0;
}