mirror of
https://github.com/isfshax/isfshax.git
synced 2024-11-05 19:25:15 +01:00
Fix slc payload loading
Align isfs buffers, remove the need for heap
This commit is contained in:
parent
b16cca5a8c
commit
239a7607c8
@ -14,7 +14,6 @@
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include "nand.h"
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#include "isfs/isfs.h"
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@ -34,9 +33,6 @@ int isfs_init(void)
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ctx = isfs_get_volume(ISFSVOL_SLC);
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ctx->mounted = !isfs_load_super(ctx, 0, ISFSHAX_GENERATION_FIRST);
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/*ctx = isfs_get_volume(ISFSVOL_SLCCMPT);
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ctx->mounted = !isfs_load_super(ctx, 0, 0xffffffff);*/
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initialized = true;
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return 0;
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}
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@ -146,20 +142,14 @@ int isfs_read(isfs_file* file, void* buffer, size_t size, size_t* bytes_read)
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size_t total = size;
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void* cluster_buf = memalign(64, CLUSTER_SIZE);
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if(!cluster_buf) return -3;
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while(size) {
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size_t pos = file->offset % CLUSTER_SIZE;
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size_t copy = CLUSTER_SIZE - pos;
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if(copy > size) copy = size;
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if (isfs_read_volume(ctx, file->cluster, 1, ISFSVOL_FLAG_ENCRYPTED, NULL, cluster_buf) < 0)
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{
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free(cluster_buf);
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if (isfs_read_volume(ctx, file->cluster, 1, ISFSVOL_FLAG_ENCRYPTED, NULL, ctx->clbuf) < 0)
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return -4;
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}
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memcpy(buffer, cluster_buf + pos, copy);
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memcpy(buffer, ctx->clbuf + pos, copy);
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file->offset += copy;
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buffer += copy;
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@ -169,8 +159,6 @@ int isfs_read(isfs_file* file, void* buffer, size_t size, size_t* bytes_read)
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file->cluster = isfs_get_fat(ctx)[file->cluster];
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}
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free(cluster_buf);
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*bytes_read = total;
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return 0;
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}
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@ -23,6 +23,7 @@ typedef struct isfs_ctx {
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const u32 super_count;
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int index;
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u8* const super;
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u8* const clbuf;
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u32 generation;
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u32 version;
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bool mounted;
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@ -14,7 +14,6 @@
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include "debug.h"
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#include "isfs/isfs.h"
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@ -171,9 +170,6 @@ int isfs_write_super(isfs_ctx *ctx, void *super, int index)
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int isfs_find_super(isfs_ctx* ctx, u32 min_generation, u32 max_generation, u32 *generation, u32 *version)
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{
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void* super = memalign(64, CLUSTER_SIZE);
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if(!super) return -1;
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struct {
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int index;
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u32 generation;
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@ -184,13 +180,13 @@ int isfs_find_super(isfs_ctx* ctx, u32 min_generation, u32 max_generation, u32 *
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{
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u32 cluster = CLUSTER_COUNT - (ctx->super_count - i) * ISFSSUPER_CLUSTERS;
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if(isfs_read_volume(ctx, cluster, 1, 0, NULL, super))
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if(isfs_read_volume(ctx, cluster, 1, 0, NULL, ctx->clbuf))
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continue;
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int cur_version = isfs_get_super_version(super);
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int cur_version = isfs_get_super_version(ctx->clbuf);
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if(cur_version < 0) continue;
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u32 cur_generation = isfs_get_super_generation(super);
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u32 cur_generation = isfs_get_super_generation(ctx->clbuf);
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if((cur_generation < newest.generation) ||
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(cur_generation < min_generation) ||
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(cur_generation >= max_generation))
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@ -201,8 +197,6 @@ int isfs_find_super(isfs_ctx* ctx, u32 min_generation, u32 max_generation, u32 *
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newest.version = cur_version;
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}
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free(super);
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if(newest.index == -1)
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{
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ISFS_debug("Failed to find super block.\n");
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@ -248,4 +242,3 @@ int isfs_commit_super(isfs_ctx* ctx)
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return -1;
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}
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@ -31,7 +31,7 @@ typedef struct isfs_super {
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u16 fat[CLUSTER_COUNT];
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isfs_fst fst[6143];
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u8 pad[20];
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} PACKED ALIGNED(64) isfs_super;
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} PACKED ALIGNED(NAND_DATA_ALIGN) isfs_super;
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_Static_assert(sizeof(isfs_super) == ISFSSUPER_SIZE, "isfs_super must be 0x40000");
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#define FAT_CLUSTER_LAST 0xFFFB // last cluster within a chain
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@ -8,10 +8,9 @@
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#include "hmac.h"
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#include "string.h"
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static u8 slc_super_buf[ISFSSUPER_SIZE];
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/*static u8 slccmpt_super_buf[ISFSSUPER_SIZE];*/
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static u8 slc_super_buf[ISFSSUPER_SIZE] ALIGNED(NAND_DATA_ALIGN), slc_cluster_buf[CLUSTER_SIZE] ALIGNED(NAND_DATA_ALIGN);
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isfs_ctx isfs[4] = {
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isfs_ctx isfs[] = {
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[ISFSVOL_SLC]
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{
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.volume = ISFSVOL_SLC,
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@ -21,22 +20,13 @@ isfs_ctx isfs[4] = {
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.hmac = &otp.nand_hmac,
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.super_count = 64,
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.super = slc_super_buf,
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.clbuf = slc_cluster_buf,
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},
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/*[ISFSVOL_SLCCMPT]
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{
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.volume = ISFSVOL_SLCCMPT,
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.name = "slccmpt",
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.bank = BANK_SLCCMPT,
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.key = &otp.wii_nand_key,
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.hmac = &otp.wii_nand_hmac,
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.super_count = 16,
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.super = slccmpt_super_buf,
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},*/
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};
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int isfs_num_volumes(void)
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{
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return sizeof(isfs) / sizeof(isfs_ctx);
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return sizeof(isfs) / sizeof(*isfs);
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}
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isfs_ctx* isfs_get_volume(int volume)
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@ -155,8 +145,8 @@ int isfs_read_volume(const isfs_ctx* ctx, u32 start_cluster, u32 cluster_count,
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int isfs_write_volume(const isfs_ctx* ctx, u32 start_cluster, u32 cluster_count, u32 flags, void *hmac_seed, void *data)
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{
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static u8 blockpg[64][PAGE_SIZE] ALIGNED(64), blocksp[64][SPARE_SIZE];
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static u8 pgbuf[PAGE_SIZE] ALIGNED(64), spbuf[SPARE_SIZE];
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static u8 blockpg[64][PAGE_SIZE] ALIGNED(NAND_DATA_ALIGN), blocksp[64][SPARE_SIZE];
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static u8 pgbuf[PAGE_SIZE] ALIGNED(NAND_DATA_ALIGN), spbuf[SPARE_SIZE];
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u8 hmac[20] = {0};
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int rc = ISFSVOL_OK;
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u32 b, p;
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@ -84,7 +84,7 @@ u32 load_payload_nand(void)
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if (res)
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return vector;
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res = isfs_open(&file, "slc:/isfshax.bin");
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res = isfs_open(&file, "slc:/sys/isfshax.bin");
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if (res)
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goto error_open;
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@ -66,9 +66,9 @@
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#define BANK_FL_4 (0x00000004) /* set by bsp:fla for revisions after latte A2X */
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#if NAND_WRITE_ENABLED
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static u8 nand_status_buf[STATUS_BUF_SIZE] ALIGNED(256);
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static u8 nand_status_buf[STATUS_BUF_SIZE] ALIGNED(NAND_DATA_ALIGN);
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#endif
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static u8 nand_spare_buf[SPARE_BUF_SIZE] ALIGNED(256);
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static u8 nand_spare_buf[SPARE_BUF_SIZE] ALIGNED(NAND_DATA_ALIGN);
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static u32 nand_enabled_banks = BANK_SLC;
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@ -193,7 +193,7 @@ int nand_write_page(u32 pageno, void *data, void *spare)
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if (pageno > PAGE_COUNT) {
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return nand_error("invalid page number");
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}
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if ((u32)data & 0x1f) {
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if ((u32)data & (NAND_DATA_ALIGN - 1)) {
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return nand_error("unaligned page buffer");
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}
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@ -342,7 +342,7 @@ int nand_read_page(u32 pageno, void *data, void *spare)
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if (pageno > PAGE_COUNT) {
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return nand_error("invalid page number");
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}
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if ((u32)data & 0x1f) {
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if ((u32)data & (NAND_DATA_ALIGN - 1)) {
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return nand_error("unaligned page buffer");
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}
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#define NAND_WRITE_ENABLED 1
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#define NAND_DATA_ALIGN 128
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/* nand structure definitions */
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#define PAGE_SIZE 0x800
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#define PAGE_COUNT 0x40000
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