int mount_sd_fat(const char *path)
{
int result = -1;
// get command and client
void* pClient = malloc(sizeof(FSClient));
void* pCmd = malloc(sizeof(FSCmdBlock));
if(!pClient || !pCmd) {
// just in case free if not 0
if(pClient)
free(pClient);
if(pCmd)
free(pCmd);
return -2;
}
FSInit();
FSInitCmdBlock(pCmd);
FSAddClient(pClient, -1);
char *mountPath = NULL;
if(MountFS(pClient, pCmd, &mountPath) == 0) {
result = sd_fat_add_device(path, mountPath, pClient, pCmd);
free(mountPath);
}
return result;
}
s32 WBFS_OpenPart(u32 part_fs, u32 part_idx, u32 part_lba, u32 part_size, char *partition)
{
// close
WBFS_Close();
dbg_printf("openpart(%d %d %d %d)\n", part_fs, part_idx, part_lba, part_size);
if (part_fs == PART_FS_UNK) return -1;
if (part_fs == PART_FS_WBFS) {
if (WBFS_OpenLBA(part_lba, part_size)) return -1;
} else {
MountPoint *mp = mount_find_part(wbfsDev, part_lba);
if (mp) {
mount_name2drive(mp->name, wbfs_fs_drive);
} else {
if (MountFS(GAME_MOUNT, wbfsDev, part_lba, part_fs, 1)) return -1;
mount_name2drive(GAME_MOUNT, wbfs_fs_drive);
}
}
// success
wbfs_part_fs = part_fs;
wbfs_part_idx = part_idx;
wbfs_part_lba = part_lba;
sprintf(partition, "%s%d", get_fs_name(part_fs), wbfs_part_idx);
dbg_printf("game part=%s\n", partition);
return 0;
}
int main(void)
{
uint8_t *buffer = (uint8_t *)(((uint32_t)padded_buffer + 15) & ~15);
SdLoaderInfo *info = (SdLoaderInfo *)_load_start_coguser0;
uint32_t load_address, index_width, offset_width, addr, count;
uint32_t tags_size, cache_size, cache_lines, cache_tags, mboxes, *sp;
VolumeInfo vinfo;
FileInfo finfo;
PexeFileHdr *hdr;
int sd_id, i;
uint8_t *p;
// determine the cache size and setup cache variables
index_width = info->cache_geometry >> 8;
offset_width = info->cache_geometry & 0xff;
tags_size = (1 << index_width) * 4;
cache_size = 1 << (index_width + offset_width);
cache_lines = HUB_SIZE - cache_size;
cache_tags = cache_lines - tags_size;
mboxes = cache_tags - sizeof(xmem_mbox_t) * 8 - 4;
xmem_mbox = (xmem_mbox_t *)mboxes;
// load the external memory driver
DPRINTF("Loading external memory driver\n");
memset((void *)mboxes, 0, sizeof(xmem_mbox_t) * 8 + 4);
xmem_mbox[8].hubaddr = XMEM_END;
cognew(_load_start_coguser1, mboxes);
DPRINTF("Loading SD driver\n");
sd_mbox = (uint32_t *)mboxes - 2;
sd_mbox[0] = 0xffffffff;
if ((sd_id = cognew(_load_start_coguser2, sd_mbox)) < 0) {
DPRINTF("Error loading SD driver\n");
return 1;
}
while (sd_mbox[0])
;
DPRINTF("Initializing SD card\n");
if (SD_Init(sd_mbox, 5) != 0) {
DPRINTF("SD card initialization failed\n");
return 1;
}
DPRINTF("Mounting filesystem\n");
if (MountFS(buffer, &vinfo) != 0) {
DPRINTF("MountFS failed\n");
return 1;
}
// open the .pex file
DPRINTF("Opening 'autorun.pex'\n");
if (FindFile(buffer, &vinfo, FILENAME, &finfo) != 0) {
DPRINTF("FindFile '%s' failed\n", FILENAME);
return 1;
}
// read the file header
DPRINTF("Reading PEX file header\n");
if (GetNextFileSector(&finfo, kernel_image, &count) != 0 || count < PEXE_HDR_SIZE) {
DPRINTF("Error reading PEX file header\n");
return 1;
}
// verify the header
DPRINTF("Verifying PEX file header\n");
hdr = (PexeFileHdr *)kernel_image;
if (strncmp(hdr->tag, PEXE_TAG, sizeof(hdr->tag)) != 0 || hdr->version != PEXE_VERSION) {
DPRINTF("Bad PEX file header\n");
return 1;
}
load_address = hdr->loadAddress;
// move past the header
memmove(kernel_image, (uint8_t *)kernel_image + PEXE_HDR_SIZE, SECTOR_SIZE - PEXE_HDR_SIZE);
p = (uint8_t *)kernel_image + SECTOR_SIZE - PEXE_HDR_SIZE;
// read the .kernel cog image
DPRINTF("Reading kernel image\n");
for (i = 1; i < 4; ++i) {
if (GetNextFileSector(&finfo, p, &count) != 0 || count < SECTOR_SIZE)
return 1;
p += SECTOR_SIZE;
}
// load the image
DPRINTF("Loading image at 0x%08x\n", load_address);
addr = load_address;
while (GetNextFileSector(&finfo, buffer, &count) == 0) {
write_block(addr, buffer, XMEM_SIZE_512);
addr += SECTOR_SIZE;
}
// stop the sd driver
DPRINTF("Stopping SD driver\n");
cogstop(sd_id);
// setup the stack
// at start stack contains xmem_mbox, cache_tags, cache_lines, cache_geometry, pc
sp = (uint32_t *)mboxes;
*--sp = load_address;
*--sp = info->cache_geometry;
*--sp = cache_lines;
*--sp = cache_tags;
*--sp = mboxes;
// start the xmm kernel boot code
DPRINTF("Starting kernel\n");
coginit(cogid(), kernel_image, sp);
// should never reach this
return 0;
}
