Git-Mirrors/portapack-mayhem
1
0
Fork 0
mirror of https://github.com/eried/portapack-mayhem.git synced 2025-05-10 10:45:17 -04:00
Code Issues Projects Releases Packages Wiki Activity

added compression of baseband images

Browse source
This commit is contained in:
Bernd Herzog 2023-03-21 19:18:38 +01:00
parent ce23c7d882
commit b856b047cc
8 changed files with 142 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

19
firmware/application/core_control.cpp
View file

@ -1,5 +1,6 @@
/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2023 Bernd Herzog
*
* This file is part of PortaPack.
*
@ -28,22 +29,20 @@ using namespace lpc43xx;
#include "message.hpp"
#include "baseband_api.hpp"
#include "lz4.h"
#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 bool full_reset) {
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);
if(chunk->tag == image_tag) {
const void *src = &chunk->data[0];
void *dst = reinterpret_cast<void*>(to.base());
/* extract and initialize M4 code RAM */
unlz4_len(src, dst, chunk->compressed_data_size);
/* M4 core is assumed to be sleeping with interrupts off, so we can mess
* with its address space and RAM without concern.