mirror of
https://github.com/Polprzewodnikowy/SummerCart64.git
synced 2024-11-29 16:54:14 +01:00
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
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#include "error.h"
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#include "fatfs/ff.h"
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#include "init.h"
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#include "io.h"
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#include "menu.h"
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#define ROM_ENTRY_OFFSET (8)
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#define ROM_CODE_OFFSET (4096)
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#define ROM_MAX_LOAD_SIZE (1 * 1024 * 1024)
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static const char *fatfs_error_codes[] = {
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"Succeeded",
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"A hard error occurred in the low level disk I/O layer",
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"Assertion failed",
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"The physical drive cannot work",
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"Could not find the file",
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"Could not find the path",
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"The path name format is invalid",
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"Access denied due to prohibited access or directory full",
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"Access denied due to prohibited access",
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"The file/directory object is invalid",
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"The physical drive is write protected",
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"The logical drive number is invalid",
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"The volume has no work area",
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"There is no valid FAT volume",
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"The f_mkfs() aborted due to any problem",
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"Could not get a grant to access the volume within defined period",
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"The operation is rejected according to the file sharing policy",
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"LFN working buffer could not be allocated",
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"Number of open files > FF_FS_LOCK",
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"Given parameter is invalid",
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};
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#define FF_CHECK(x, message, ...) { \
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fresult = x; \
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if (fresult != FR_OK) { \
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error_display(message " [%s]:\n %s\n", __VA_ARGS__ __VA_OPT__(,) #x, fatfs_error_codes[fresult]); \
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} \
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}
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void menu_load_and_run (void) {
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void (* menu)(void);
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FRESULT fresult;
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FATFS fs;
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FIL fil;
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UINT br;
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FSIZE_t size = ROM_MAX_LOAD_SIZE;
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FF_CHECK(f_mount(&fs, "", 1), "Couldn't mount drive");
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FF_CHECK(f_open(&fil, "sc64menu.n64", FA_READ), "Couldn't open menu file");
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FF_CHECK(f_lseek(&fil, ROM_ENTRY_OFFSET), "Couldn't seek to entry point offset");
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FF_CHECK(f_read(&fil, &menu, sizeof(menu), &br), "Couldn't read entry point");
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FF_CHECK(f_lseek(&fil, ROM_CODE_OFFSET), "Couldn't seek to code start offset");
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if ((f_size(&fil) - ROM_CODE_OFFSET) < size) {
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size = (f_size(&fil) - ROM_CODE_OFFSET);
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}
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FF_CHECK(f_read(&fil, menu, size, &br), "Couldn't read menu file");
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FF_CHECK(br != size, "Read size is different than expected");
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FF_CHECK(f_close(&fil), "Couldn't close menu file");
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FF_CHECK(f_unmount(""), "Couldn't unmount drive");
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cache_inst_hit_invalidate(menu, size);
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deinit();
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menu();
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while (1);
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}
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