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Support for booting from eMMC

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Fusee will Look for FAT32 partition on BOOT1 (1MB offset), BOOT1, GPP, SD, in this order
If a .no_boot_storage file is found in the root directory, the partition is skipped
This commit is contained in:
Christoph Baumann
2025-05-13 13:07:25 +02:00
parent c1b5cc411e
commit 867ff62dfa
15 changed files with 264 additions and 32 deletions
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47
fusee/program/source/fs/fusee_fs_api.cpp
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@@ -26,11 +26,14 @@ namespace ams::fs {
constexpr size_t MaxFiles = 8 + 64;
constexpr size_t MaxDirectories = 2;
constinit bool g_is_sd_mounted = false;
constinit bool g_is_sys_mounted = false;
constinit bool g_is_sd_mounted = false;
constinit bool g_is_sys_mounted = false;
constinit bool g_is_boot1_mounted = false;
constinit bool g_is_boot1_off_mounted = false;
alignas(0x10) constinit FATFS g_sd_fs = {};
alignas(0x10) constinit FATFS g_sys_fs = {};
alignas(0x10) constinit FATFS g_sd_fs = {};
alignas(0x10) constinit FATFS g_sys_fs = {};
alignas(0x10) constinit FATFS g_boot1_fs = {};
alignas(0x10) constinit FIL g_files[MaxFiles] = {};
alignas(0x10) constinit DIR g_dirs[MaxDirectories] = {};
@@ -119,6 +122,32 @@ namespace ams::fs {
}
bool MountBoot1() {
/* Can't mount both */
AMS_ASSERT(!g_is_boot1_mounted && !g_is_boot1_off_mounted);
g_is_boot1_mounted = f_mount(std::addressof(g_boot1_fs), "boot1:", 1) == FR_OK;
return g_is_boot1_mounted;
}
void UnmountBoot1 () {
AMS_ASSERT(g_is_boot1_mounted);
f_unmount("boot1:");
g_is_boot1_mounted = false;
}
bool MountBoot1Off() {
/* Can't mount both */
AMS_ASSERT(!g_is_boot1_mounted && !g_is_boot1_off_mounted);
g_is_boot1_off_mounted = f_mount(std::addressof(g_boot1_fs), "boot1_off:", 1) == FR_OK;
return g_is_boot1_off_mounted;
}
void UnmountBoot1Off () {
AMS_ASSERT(g_is_boot1_off_mounted);
f_unmount("boot1_off:");
g_is_boot1_off_mounted = false;
}
bool MountSys() {
AMS_ASSERT(!g_is_sys_mounted);
g_is_sys_mounted = f_mount(std::addressof(g_sys_fs), "sys:", 1) == FR_OK;
@@ -143,6 +172,16 @@ namespace ams::fs {
g_is_sd_mounted = false;
}
Result ChangeDrive(const char *path) {
R_TRY(TranslateFatFsError(f_chdrive(path)));
R_SUCCEED();
}
Result ChangeDirectory(const char *path) {
R_TRY(TranslateFatFsError(f_chdir(path)));
R_SUCCEED();
}
Result GetEntryType(DirectoryEntryType *out_entry_type, bool *out_archive, const char *path) {
/* Get the file info. */
FILINFO info;