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hos: Disallow booting CFW if normal FS and exFAT sd

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This will stop black screens when user boots CFW with an exFAT sd card and without having the exFAT microupdate.
This commit is contained in:
CTCaer 2020-04-27 09:41:13 +03:00
parent 6e538cd291
commit f148757110
1 changed files with 42 additions and 2 deletions
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42
bootloader/hos/hos.c
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@ -2,7 +2,7 @@
* Copyright (c) 2018 naehrwert
* Copyright (c) 2018 st4rk
* Copyright (c) 2018 Ced2911
* Copyright (c) 2018-2019 CTCaer
* Copyright (c) 2018-2020 CTCaer
* Copyright (c) 2018 balika011
*
* This program is free software; you can redistribute it and/or modify it
@ -436,6 +436,37 @@ static void _free_launch_components(launch_ctxt_t *ctxt)
free(ctxt->kip1_patches);
}
static bool _get_fs_exfat_compatible(link_t *info)
{
u32 fs_idx;
u32 fs_ids_cnt;
u32 sha_buf[32 / sizeof(u32)];
kip1_id_t *kip_ids;
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, info, link)
{
if (strncmp((const char*)ki->kip1->name, "FS", 2))
continue;
if (!se_calc_sha256(sha_buf, ki->kip1, ki->size))
break;
pkg2_get_ids(&kip_ids, &fs_ids_cnt);
for (fs_idx = 0; fs_idx < fs_ids_cnt; fs_idx++)
if (!memcmp(sha_buf, kip_ids[fs_idx].hash, 8))
break;
// Return false if FAT32 only.
if (fs_ids_cnt <= fs_idx && !(fs_idx & 1))
return false;
break;
}
return true;
}
int hos_launch(ini_sec_t *cfg)
{
minerva_change_freq(FREQ_1600);
@ -643,6 +674,15 @@ int hos_launch(ini_sec_t *cfg)
LIST_FOREACH_ENTRY(merge_kip_t, mki, &ctxt.kip1_list, link)
pkg2_merge_kip(&kip1_info, (pkg2_kip1_t *)mki->kip1);
// Check if FS is compatible with exFAT.
if (!ctxt.stock && sd_fs.fs_type == FS_EXFAT && !_get_fs_exfat_compatible(&kip1_info))
{
_hos_crit_error("Your SD Card is exFAT and the installed\nFS only supports FAT32!");
_free_launch_components(&ctxt);
return 0;
}
// Patch kip1s in memory if needed.
const char* unappliedPatch = pkg2_patch_kips(&kip1_info, ctxt.kip1_patches);
if (unappliedPatch != NULL)