mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-30 09:46:32 -05:00
74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/*
|
|
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
|
|
*
|
|
* This file is part of PortaPack.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "core_control.hpp"
|
|
|
|
#include "hal.h"
|
|
|
|
#include "lpc43xx_cpp.hpp"
|
|
using namespace lpc43xx;
|
|
|
|
#include "message.hpp"
|
|
#include "baseband_api.hpp"
|
|
|
|
#include <cstring>
|
|
|
|
/* TODO: OK, this is cool, but how do I put the M4 to sleep so I can switch to
|
|
* a different image? Other than asking the old image to sleep while the M0
|
|
* makes changes?
|
|
*
|
|
* I suppose I could force M4MEMMAP to an invalid memory reason which would
|
|
* cause an exception and effectively halt the M4. But that feels gross.
|
|
*/
|
|
void m4_init(const portapack::spi_flash::image_tag_t image_tag, const portapack::memory::region_t to) {
|
|
const portapack::spi_flash::chunk_t* chunk = reinterpret_cast<const portapack::spi_flash::chunk_t*>(portapack::spi_flash::images.base());
|
|
while(chunk->tag) {
|
|
if( chunk->tag == image_tag ) {
|
|
/* Initialize M4 code RAM */
|
|
std::memcpy(reinterpret_cast<void*>(to.base()), &chunk->data[0], chunk->length);
|
|
|
|
/* M4 core is assumed to be sleeping with interrupts off, so we can mess
|
|
* with its address space and RAM without concern.
|
|
*/
|
|
LPC_CREG->M4MEMMAP = to.base();
|
|
|
|
/* Reset M4 core */
|
|
LPC_RGU->RESET_CTRL[0] = (1 << 13);
|
|
|
|
return;
|
|
}
|
|
chunk = chunk->next();
|
|
}
|
|
|
|
chDbgPanic("NoImg");
|
|
}
|
|
|
|
void m4_request_shutdown() {
|
|
baseband::shutdown();
|
|
}
|
|
|
|
void m0_halt() {
|
|
rgu::reset(rgu::Reset::M0APP);
|
|
while(true) {
|
|
port_wait_for_interrupt();
|
|
}
|
|
}
|