mirror of
https://github.com/Polprzewodnikowy/N64FlashcartMenu.git
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3becd1ff59
<!--- Provide a general summary of your changes in the Title above --> ## Description <!--- Describe your changes in detail --> This PR changes most of the calls to the fatfs lib with the standard C ones. Additionally, there's couple of changes required to adapt to new interface and several bug fixes. As a bonus menu can now be run in ares emulator and on the iQue player, adapting to the available storage options - DragonFS in the ROM and iQue flash modules (bbfs). ## Motivation and Context <!--- What does this sample do? What problem does it solve? --> <!--- If it fixes/closes/resolves an open issue, please link to the issue here --> To make it easier to use storage medium other than SD cards on platforms other than N64 with flashcart. ## How Has This Been Tested? <!-- (if applicable) --> <!--- Please describe in detail how you tested your sample/changes. --> <!--- Include details of your testing environment, and the tests you ran to --> <!--- see how your change affects other areas of the code, etc. --> SummerCart64 flashcart and ares emulator ## Screenshots <!-- (if appropriate): --> N/A ## Types of changes <!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: --> - [x] Improvement (non-breaking change that adds a new feature) - [x] Bug fix (fixes an issue) - [x] Breaking change (breaking change) - [x] Config and build (change in the configuration and build system, has no impact on code or features) ## Checklist: <!--- Go over all the following points, and put an `x` in all the boxes that apply. --> <!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! --> - [x] My code follows the code style of this project. - [x] My change requires a change to the documentation. - [ ] I have updated the documentation accordingly. - [ ] I have added tests to cover my changes. - [ ] All new and existing tests passed. <!--- It would be nice if you could sign off your contribution by replacing the name with your GitHub user name and GitHub email contact. --> Signed-off-by: Polprzewodnikowy <sc@mateuszfaderewski.pl>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
#include <libdragon.h>
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#include "flashcart_utils.h"
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#include "utils/fs.h"
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#include "utils/utils.h"
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void pi_dma_read_data (void *src, void *dst, size_t length) {
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data_cache_hit_writeback_invalidate(dst, length);
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dma_read_async(dst, (uint32_t) (src), length);
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dma_wait();
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}
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void pi_dma_write_data (void *src, void *dst, size_t length) {
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assert((((uint32_t) (src)) & 0x07) == 0);
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assert((((uint32_t) (dst)) & 0x01) == 0);
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assert((length & 1) == 0);
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data_cache_hit_writeback(src, length);
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dma_write_raw_async(src, (uint32_t) (dst), length);
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dma_wait();
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}
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void fatfs_fix_file_size (FIL *fil) {
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// HACK: Align file size to the SD sector size to prevent FatFs from doing partial sector load.
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// We are relying on direct transfer from SD to SDRAM without CPU intervention.
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// Sending some extra bytes isn't an issue here.
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fil->obj.objsize = ALIGN(f_size(fil), FS_SECTOR_SIZE);
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}
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bool fatfs_get_file_sectors (char *path, uint32_t *address, address_type_t type, uint32_t max_sectors) {
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FATFS *fs;
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FIL fil;
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bool error = false;
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if (f_open(&fil, strip_fs_prefix(path), FA_READ) != FR_OK) {
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return true;
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}
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fatfs_fix_file_size(&fil);
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fs = fil.obj.fs;
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uint32_t sector_count = MIN(f_size(&fil) / FS_SECTOR_SIZE, max_sectors);
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for (uint32_t file_sector = 0; file_sector < sector_count; file_sector += fs->csize) {
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if ((f_lseek(&fil, (file_sector * FS_SECTOR_SIZE) + (FS_SECTOR_SIZE / 2))) != FR_OK) {
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error = true;
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break;
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}
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uint32_t cluster = fil.clust;
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if (cluster >= fs->n_fatent) {
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error = true;
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break;
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}
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uint32_t cluster_sector = (fs->database + ((LBA_t) (fs->csize) * (cluster - 2)));
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for (uint32_t i = 0; i < fs->csize; i++) {
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uint32_t sector = (cluster_sector + i);
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if ((file_sector + i) >= sector_count) {
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break;
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}
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switch (type) {
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case ADDRESS_TYPE_MEM:
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*address = sector;
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break;
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case ADDRESS_TYPE_PI:
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io_write((uint32_t) (address), sector);
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break;
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}
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address++;
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}
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}
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if (f_close(&fil) != FR_OK) {
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error = true;
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}
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return error;
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}
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