mirror of
https://github.com/tillitis/tillitis-key1.git
synced 2025-07-01 09:26:47 -04:00
8bf1678acd
- New function reset.c:reset(). Move code from syscall handler switch to this function. - Rename resetinfo.h to reset.h.
42 lines
1 KiB
C
42 lines
1 KiB
C
/*
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* Copyright (C) 2025 - Tillitis AB
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#include <stdint.h>
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#include <tkey/assert.h>
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#include <tkey/lib.h>
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#include <tkey/tk1_mem.h>
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#include "reset.h"
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// clang-format off
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static volatile uint32_t *system_reset = (volatile uint32_t *)TK1_MMIO_TK1_SYSTEM_RESET;
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static volatile struct reset *resetinfo = (volatile struct reset *)TK1_MMIO_RESETINFO_BASE;
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// clang-format on
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int reset(struct reset *userreset, size_t nextlen)
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{
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if ((uint32_t)userreset < TK1_RAM_BASE ||
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(uint32_t)userreset >= TK1_RAM_BASE + TK1_RAM_SIZE) {
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return -1;
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}
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if (nextlen > sizeof(resetinfo->next_app_data)) {
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return -1;
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}
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(void)memset((void *)resetinfo, 0, sizeof(*resetinfo));
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resetinfo->type = userreset->type;
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memcpy((void *)resetinfo->app_digest, userreset->app_digest, 32);
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memcpy((void *)resetinfo->next_app_data, userreset->next_app_data,
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nextlen);
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// Do the actual reset.
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*system_reset = 1;
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// Should not be reached.
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assert(1 == 2);
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__builtin_unreachable();
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}
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