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https://github.com/brain-hackers/u-boot-brain
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92369844ec
On the A31s the RTC is by default secured. Thus when u-boot loads the kernel in non-secure world, the RTC is unavailable. The SoC has a TrustZone Protection Controller, which can be used to enable non-secure access to the RTC. On the A31 the TZPC doesn't seem to do anything, i.e. changes to its register contents do not affect access to the RTC. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
24 lines
529 B
C
24 lines
529 B
C
/*
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* (C) Copyright 2015 Chen-Yu Tsai <wens@csie.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SUNXI_TZPC_H
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#define _SUNXI_TZPC_H
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#ifndef __ASSEMBLY__
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struct sunxi_tzpc {
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u32 r0size; /* 0x00 Size of secure RAM region */
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u32 decport0_status; /* 0x04 Status of decode protection port 0 */
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u32 decport0_set; /* 0x08 Set decode protection port 0 */
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u32 decport0_clear; /* 0x0c Clear decode protection port 0 */
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};
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#endif
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#define SUNXI_TZPC_DECPORT0_RTC (1 << 1)
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void tzpc_init(void);
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#endif /* _SUNXI_TZPC_H */
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