mirror of https://github.com/wolfSSL/wolfBoot.git
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/* boot_c2000.c
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*
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* Architecture boot handoff for the TI C2000 C28x DSP (TMS320F28P550SJ).
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*
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* The reset/startup path is provided by the C2000Ware codestart
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* (f28p55x_codestartbranch.asm -> _c_int00 -> main); wolfBoot's main()
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* (src/loader.c) then runs hal_init() and the verify state machine. This file
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* provides the two arch hooks wolfBoot requires: do_boot(), which branches to
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* the verified application resident in the BOOT partition (execute-in-place),
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* and arch_reboot().
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*
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* Copyright (C) 2026 wolfSSL Inc.
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*
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* This file is part of wolfBoot.
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*
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* wolfBoot is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* wolfBoot is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#include <stdint.h>
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#include "hal.h"
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#include "driverlib.h"
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#include "device.h"
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/*
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* Branch to the verified application.
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*
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* app_offset is the firmware base (BOOT partition address + IMAGE_HEADER_SIZE),
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* i.e. the application's own codestart, linked to execute in place. There is
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* no vector table to reload on the C28x: interrupts are masked here and the
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* application's codestart re-establishes its stack pointer and re-runs the
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* C-runtime init before calling its main(). This never returns.
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*/
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void do_boot(const uint32_t *app_offset)
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{
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void (*app_entry)(void);
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DINT; /* mask maskable interrupts across the handoff */
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app_entry = (void (*)(void))(uintptr_t)app_offset;
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app_entry();
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/* Not reached. */
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while (1)
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;
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}
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void arch_reboot(void)
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{
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SysCtl_resetDevice();
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while (1)
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;
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}
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