portapack-mayhem/mayhem-firmware
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This commit is contained in:
furrtek
2016-01-07 14:17:39 +01:00
parent d1e9bf33ec
commit 1e71a10346
13 changed files with 311 additions and 74 deletions
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firmware/application/m4_startup.cpp
+28 -19
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@@ -52,7 +52,8 @@ void m4_init(const portapack::spi_flash::region_t from, const portapack::memory:
}
int m4_load_image(void) {
uint32_t mod_size;
const char magic[6] = {'P', 'P', 'M', ' ', 0x01, 0x00};
//uint32_t mod_size;
UINT bw;
uint8_t i;
uint16_t cnt;
@@ -62,28 +63,36 @@ int m4_load_image(void) {
DIR rootdir;
FRESULT res;
// Scan SD card root directory for files with the right md5 fingerprint at the right location
// Scan SD card root directory for files with the right MD5 fingerprint at the right location
f_opendir(&rootdir, "/");
for (;;) {
res = f_readdir(&rootdir, &modinfo);
if (res != FR_OK || modinfo.fname[0] == 0) break;
if (!(modinfo.fattrib & AM_DIR)) {
if (res != FR_OK || modinfo.fname[0] == 0) break; // Reached last file, abort
// Only care about files with .bin extension
if ((!(modinfo.fattrib & AM_DIR)) && (modinfo.fname[9] == 'B') && (modinfo.fname[10] == 'I') && (modinfo.fname[11] == 'N')) {
f_open(&modfile, modinfo.fname, FA_OPEN_EXISTING | FA_READ);
f_lseek(&modfile, 26);
f_read(&modfile, &md5sum, 16, &bw);
for (i = 0; i < 16; i++) {
if (md5sum[i] != modhash[i]) break;
// Magic bytes and version check
f_read(&modfile, &md5sum, 6, &bw);
for (i = 0; i < 6; i++) {
if (md5sum[i] != magic[i]) break;
}
if (i == 16) {
f_lseek(&modfile, 6);
f_read(&modfile, &mod_size, 4, &bw);
f_lseek(&modfile, 256);
// For some reason, f_read > 512 bytes at once crashes everything... :/
for (cnt=0;cnt<256;cnt++)
f_read(&modfile, reinterpret_cast<void*>(portapack::memory::map::m4_code.base()+(cnt*256)), 256, &bw);
f_close(&modfile);
LPC_RGU->RESET_CTRL[0] = (1 << 13);
return 1;
if (i == 6) {
f_lseek(&modfile, 26);
f_read(&modfile, &md5sum, 16, &bw);
for (i = 0; i < 16; i++) {
if (md5sum[i] != modhash[i]) break;
}
if (i == 16) {
//f_lseek(&modfile, 6);
//f_read(&modfile, &mod_size, 4, &bw);
f_lseek(&modfile, 256);
// For some reason, f_read > 512 bytes at once crashes everything... :/
for (cnt=0;cnt<256;cnt++)
f_read(&modfile, reinterpret_cast<void*>(portapack::memory::map::m4_code.base()+(cnt*256)), 256, &bw);
f_close(&modfile);
LPC_RGU->RESET_CTRL[0] = (1 << 13);
return 1;
}
}
f_close(&modfile);
}
@@ -95,7 +104,7 @@ int m4_load_image(void) {
void m4_switch(const char * hash) {
modhash = const_cast<char*>(hash);
// Ask M4 to enter loop in RAM
// Ask M4 to enter wait loop in RAM
BasebandConfiguration baseband_switch {
.mode = SWITCH,
.sampling_rate = 0,