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https://github.com/s1204IT/Lockpick_RCM.git
synced 2024-11-08 11:31:43 +00:00
Clean up diskio.c, enforce buffer alignment
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parent
83b75af726
commit
220fb4ba3c
1 changed files with 3 additions and 13 deletions
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@ -25,7 +25,6 @@
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#include <string.h>
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#include "diskio.h" /* FatFs lower layer API */
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#include "../../gfx/gfx.h"
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#include "../../mem/heap.h"
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#include "../../sec/se.h"
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#include "../../storage/nx_emmc.h"
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@ -38,10 +37,6 @@ extern sdmmc_storage_t sd_storage;
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extern sdmmc_storage_t storage;
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extern emmc_part_t *system_part;
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typedef struct {
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u64 b, a;
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} le128;
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typedef struct {
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u32 sector;
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u32 visit_count;
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@ -81,7 +76,6 @@ static inline void _gf256_mul_x_le(void *block) {
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pdata[0x0] ^= 0x87;
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}
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//8378ms before doing the block op all at once, 2179ms after!
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static inline int _emmc_xts(u32 ks1, u32 ks2, u32 enc, u8 *tweak, bool regen_tweak, u32 tweak_exp, u64 sec, void *dst, void *src, u32 secsize) {
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int res = 0;
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u8 *pdst = (u8 *)dst;
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@ -151,9 +145,9 @@ DRESULT disk_read (
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return RES_ERROR;
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case 1:;
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static u8 tweak[0x10];
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static u64 prev_cluster = -1;
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static u32 prev_sector = 0;
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__attribute__ ((aligned (16))) static u8 tweak[0x10];
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__attribute__ ((aligned (16))) static u64 prev_cluster = -1;
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__attribute__ ((aligned (16))) static u32 prev_sector = 0;
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u32 tweak_exp = 0;
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bool regen_tweak = true, cache_sector = false;
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@ -166,7 +160,6 @@ DRESULT disk_read (
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memcpy(tweak, sector_cache[s].tweak, 0x10);
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prev_sector = sector;
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prev_cluster = sector / 0x20;
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//gfx_printf("addr %x sec %x count %x cached\n", sector * 0x200, sector, count);
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return RES_OK;
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}
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}
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@ -180,7 +173,6 @@ DRESULT disk_read (
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}
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if (nx_emmc_part_read(&storage, system_part, sector, count, buff)) {
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//gfx_hexdump(0, buff, 0x100);
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if (prev_cluster != sector / 0x20) { // sector in different cluster than last read
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prev_cluster = sector / 0x20;
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tweak_exp = sector % 0x20;
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@ -192,13 +184,11 @@ DRESULT disk_read (
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}
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// fatfs will never pull more than a cluster
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//gfx_printf("sec %6x count %2x tweak %2x\n", sector, count, tweak_exp);
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_emmc_xts(9, 8, 0, tweak, regen_tweak, tweak_exp, prev_cluster, buff, buff, count * 0x200);
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if (cache_sector) {
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memcpy(sector_cache[s].cached_sector, buff, 0x200);
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memcpy(sector_cache[s].tweak, tweak, 0x10);
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}
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//gfx_hexdump(0, buff, 0x10);
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prev_sector = sector + count - 1;
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return RES_OK;
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}
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