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nand/nandfs stuff

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not working yet :/
This commit is contained in:
Sven Peter 2009-01-30 13:43:35 +01:00 committed by bushing
parent 1eef8e083c
commit 66f09a14de
10 changed files with 66 additions and 256 deletions
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2
Makefile
View File

@ -12,7 +12,7 @@ TARGET = iosboot.bin
ELF = iosboot.elf
OBJECTS = start.o main.o ipc.o vsprintf.o string.o gecko.o memory.o memory_asm.o \
utils_asm.o utils.o ff.o diskio.o sdhc.o powerpc_elf.o powerpc.o panic.o irq.o irq_asm.o \
exception.o exception_asm.o crypto.o nand.o nandfs.o
exception.o exception_asm.o crypto.o nand.o
$(TARGET) : $(ELF) $(ELFLOADER)
@echo "MAKEBIN $@"

41
crypto.c
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@ -3,6 +3,9 @@
#include "utils.h"
#include "memory.h"
#include "irq.h"
#include "ipc.h"
#include "gecko.h"
#include "string.h"
#define AES_CMD_RESET 0
@ -29,6 +32,21 @@ void crypto_initialize()
irq_enable(IRQ_AES);
}
void crypto_ipc(volatile ipc_request *req)
{
switch (req->req) {
case IPC_KEYS_GETOTP:
memcpy((void *)req->args[0], &otp, sizeof(otp));
dc_flushrange((void *)req->args[0], sizeof(otp));
break;
default:
gecko_printf("IPC: unknown SLOW CRYPTO request %04x\n",
req->req);
}
ipc_post(req->code, req->tag, 0);
}
static int _aes_irq = 0;
@ -99,4 +117,25 @@ void aes_decrypt(u8 *src, u8 *dst, u32 blocks, u8 keep_iv)
}
void aes_ipc(volatile ipc_request *req)
{
switch (req->req) {
case IPC_AES_RESET:
aes_reset();
break;
case IPC_AES_SETIV:
aes_set_iv((u8 *)req->args);
break;
case IPC_AES_SETKEY:
aes_set_key((u8 *)req->args);
break;
case IPC_AES_DECRYPT:
aes_decrypt((u8 *)req->args[0], (u8 *)req->args[1],
req->args[2], req->args[3]);
break;
default:
gecko_printf("IPC: unknown SLOW AES request %04x\n",
req->req);
}
ipc_post(req->code, req->tag, 0);
}

3
crypto.h
View File

@ -2,6 +2,7 @@
#define __CRYPTO_H__ 1
#include "types.h"
#include "ipc.h"
typedef struct
{
@ -42,6 +43,7 @@ typedef struct
extern otp_t otp;
void crypto_read_otp();
void crypto_ipc(volatile ipc_request *req);
void crypto_initialize();
@ -50,5 +52,6 @@ void aes_set_iv(u8 *iv);
void aes_empty_iv();
void aes_set_key(u8 *key);
void aes_decrypt(u8 *src, u8 *dst, u32 blocks, u8 keep_iv);
void aes_ipc(volatile ipc_request *req);
#endif

7
ipc.c
View File

@ -7,6 +7,7 @@
#include "gecko.h"
#include "ipc.h"
#include "nand.h"
#include "crypto.h"
static volatile ipc_request in_queue[IPC_IN_SIZE] ALIGNED(32) MEM2_BSS;
static volatile ipc_request out_queue[IPC_OUT_SIZE] ALIGNED(32) MEM2_BSS;
@ -95,6 +96,12 @@ static int process_slow(volatile ipc_request *req)
case IPC_DEV_NAND:
nand_ipc(req);
break;
case IPC_DEV_KEYS:
crypto_ipc(req);
break;
case IPC_DEV_AES:
aes_ipc(req);
break;
default:
gecko_printf("IPC: unknown SLOW request %02x-%04x\n", req->device, req->req);
}

10
ipc.h
View File

@ -6,10 +6,11 @@
#define IPC_FAST 0x01
#define IPC_SLOW 0x00
#define IPC_DEV_SYS 0x00
#define IPC_DEV_SYS 0x00
#define IPC_DEV_NAND 0x01
#define IPC_DEV_SD 0x02
#define IPC_DEV_SD 0x02
#define IPC_DEV_KEYS 0x03
#define IPC_DEV_AES 0x04
#define IPC_DEV_MISC 0x10
#define IPC_SYS_PING 0x0000
@ -45,6 +46,11 @@
#define IPC_KEYS_GETOTP 0x0000
#define IPC_KEYS_GETEEP 0x0001
#define IPC_AES_RESET 0x0000
#define IPC_AES_SETIV 0x0001
#define IPC_AES_SETKEY 0x0002
#define IPC_AES_DECRYPT 0x0003
#define IPC_MISC_BACKUP_DOBLOCK 0x0001
#define IPC_CODE (f,d,r) (((f)<<24)|((d)<<16)|(r))

3
irq.c
View File

@ -4,6 +4,7 @@
#include "utils.h"
#include "ipc.h"
#include "crypto.h"
#include "nand.h"
void irq_setup_stack(void);
@ -43,7 +44,7 @@ void irq_handler(void)
write32(HW_IRQFLAG, IRQF_TIMER);
}
if(flags & IRQF_NAND) {
gecko_printf("IRQ: NAND\n");
// gecko_printf("IRQ: NAND\n");
write32(NAND_CMD, 0x7fffffff); // shut it up
write32(HW_IRQFLAG, IRQF_NAND);
nand_irq();

7
main.c
View File

@ -16,9 +16,6 @@
#include "crypto.h"
#include "nand.h"
// TODO: move to powerpc
#include "nandfs.h"
void *vector;
typedef struct {
@ -174,10 +171,6 @@ void *_main(void *base)
nand_initialize();
gecko_puts("NAND initialized.\n");
// TODO: move to powerpc
nandfs_initialize();
gecko_puts("NAND FS initialized.\n");
gecko_puts("Initializing IPC...\n");
ipc_initialize();

10
nand.c
View File

@ -53,7 +53,7 @@ void nand_irq(void)
code = ipc_code;
tag = ipc_tag;
ipc_code = ipc_tag = 0;
ipc_post(code, tag, 1, 0);
ipc_post(code, tag, 0);
}
}
@ -195,25 +195,25 @@ void nand_ipc(volatile ipc_request *req)
switch (req->req) {
case IPC_NAND_RESET:
nand_reset();
ipc_post(req->code, req->tag, 1, 0);
ipc_post(req->code, req->tag, 0);
break;
case IPC_NAND_GETID:
ipc_post(req->code, req->tag, 2, 0, nand_get_id());
ipc_post(req->code, req->tag, 1, nand_get_id());
break;
case IPC_NAND_READ:
ipc_code = req->code;
ipc_tag = req->tag;
nand_read_page(req->args[0], (void *)req->args[1],
(void *)req->args[1]);
(void *)req->args[2]);
break;
#ifdef NAND_SUPPORT_WRITE
case IPC_NAND_WRITE:
ipc_code = req->code;
ipc_tag = req->tag;
nand_write_page(req->args[0], (void *)req->args[1],
(void *)req->args[1]);
(void *)req->args[2]);
break;
#endif
#ifdef NAND_SUPPORT_ERASE

214
nandfs.c
View File

@ -1,214 +0,0 @@
#include "nandfs.h"
#include "nand.h"
#include "gecko.h"
#include "string.h"
#define PAGE_SIZE 2048
struct _nandfs_file_node {
u8 name[NANDFS_NAME_LEN];
u8 attr;
u8 wtf;
union {
u16 first_child;
u16 first_cluster;
};
u16 sibling;
u32 size;
u32 uid;
u16 gid;
u32 dummy;
} __attribute__((packed));
struct _nandfs_sffs {
u8 magic[4];
u32 version;
u32 dummy;
s16 cluster_table[32768];
struct _nandfs_file_node files[6143];
} __attribute__((packed));
static struct _nandfs_sffs sffs __attribute__((aligned(32))) MEM2_BSS;
static u8 buffer[8*2048] __attribute__((aligned(32))) MEM2_BSS;
static s32 initialized = 0;
s32 nandfs_initialize()
{
u32 i;
u32 supercluster = 0;
u32 supercluster_version = 0;
nand_reset();
for(i = 0x7F00; i < 0x7fff; i++) {
nand_read_page(i*8, (void *)&sffs, NULL);
if(memcmp(sffs.magic, "SFFS", 4) != 0)
continue;
if(supercluster == 0 || sffs.version > supercluster_version) {
supercluster = i;
supercluster_version = sffs.version;
}
}
if(supercluster == 0) {
gecko_printf("no supercluster found. "
" your nand filesystem is seriously broken...\n");
return -1;
}
gecko_printf("using supercluster starting at page %08x\n",
supercluster);
for(i = 0; i < sizeof(struct _nandfs_sffs)/(PAGE_SIZE*8);
i++) {
/* nand_read_cluster(supercluster + i,
((u8 *)&sffs) + (i * PAGE_SIZE * 8));*/
}
initialized = 1;
return 0;
}
s32 nandfs_open(struct nandfs_fp *fp, const char *path)
{
char *ptr, *ptr2;
u32 len;
struct _nandfs_file_node *cur = sffs.files;
if (initialized != 1)
return -1;
memset(fp, 0, sizeof(*fp));
if(strcmp(cur->name, "/") != 0) {
gecko_printf("your nandfs is corrupted. fixit!\n");
return -1;
}
cur = &sffs.files[cur->first_child];
ptr = (char *)path;
do {
ptr++;
ptr2 = strchr(ptr, '/');
if (ptr2 == NULL)
len = strlen(ptr);
else {
ptr2++;
len = ptr2 - ptr - 1;
}
if (len > 12)
{
gecko_printf("invalid length: %s %s %s [%d]\n",
ptr, ptr2, path, len);
return -1;
}
gecko_printf("length: %d\n", len);
for (;;) {
int res = strncmp(cur->name, ptr, len);
if(ptr2 != NULL && strncmp(cur->name, ptr, len) == 0
&& strnlen(cur->name, 12) == len
&& (cur->attr&3) == 2
&& (cur->first_child&0xffff) != (s16)0xffff) {
cur = &sffs.files[cur->first_child];
ptr = ptr2-1;
break;
} else if(ptr2 == NULL &&
strncmp(cur->name, ptr, len) == 0 &&
strnlen(cur->name, 12) == len &&
(cur->attr&3) == 1) {
break;
} else if((cur->sibling&0xffff) != 0xffff) {
cur = &sffs.files[cur->sibling];
} else {
gecko_printf("unable to find %s (%s)\n", ptr,
path);
return -1;
}
}
} while(ptr2 != NULL);
fp->first_cluster = cur->first_cluster;
fp->cur_cluster = fp->first_cluster;
fp->offset = 0;
fp->size = cur->size;
return 0;
}
s32 nandfs_read(void *ptr, u32 size, u32 nmemb, struct nandfs_fp *fp)
{
u32 total = size*nmemb;
u32 copy_offset, copy_len;
if (initialized != 1)
return -1;
if (fp->offset + total > fp->size)
total = fp->size - fp->offset;
if (total == 0)
return 0;
while(total > 0) {
// nand_read_decrypted_cluster(fp->cur_cluster, buffer);
copy_offset = fp->offset % (PAGE_SIZE * 8);
copy_len = (PAGE_SIZE * 8) - copy_offset;
if(copy_len > total)
copy_len = total;
memcpy(ptr, buffer + copy_offset, copy_len);
total -= copy_len;
fp->offset += copy_len;
if ((copy_offset + copy_len) >= (PAGE_SIZE * 8))
fp->cur_cluster = sffs.cluster_table[fp->cur_cluster];
}
return size*nmemb;
}
s32 nandfs_seek(struct nandfs_fp *fp, s32 offset, u32 whence)
{
if (initialized != 1)
return -1;
switch (whence) {
case NANDFS_SEEK_SET:
if (offset > fp->size)
return -1;
if (offset > 0)
return -1;
fp->offset = offset;
break;
case NANDFS_SEEK_CUR:
if ((fp->offset + offset) > fp->size ||
(fp->offset + offset) < 0)
return -1;
fp->offset += offset;
break;
case NANDFS_SEEK_END:
default:
if ((fp->size + offset) > fp->size ||
(fp->size + offset) < 0)
return -1;
fp->offset = fp->size + offset;
break;
}
int skip = fp->offset;
fp->cur_cluster = fp->first_cluster;
while (skip > (2048*8)) {
fp->cur_cluster = sffs.cluster_table[fp->cur_cluster];
skip -= 2048*8;
}
return 0;
}

25
nandfs.h
View File

@ -1,25 +0,0 @@
#ifndef __NANDFS_H__
#define __NANDFS_H__
#include "types.h"
#define NANDFS_NAME_LEN 12
#define NANDFS_SEEK_SET 0
#define NANDFS_SEEK_CUR 1
#define NANDFS_SEEK_END 2
struct nandfs_fp {
s16 first_cluster;
s32 cur_cluster;
u32 size;
u32 offset;
};
s32 nandfs_initialize();
s32 nandfs_open(struct nandfs_fp *fp, const char *path);
s32 nandfs_read(void *ptr, u32 size, u32 nmemb, struct nandfs_fp *fp);
s32 nandfs_seek(struct nandfs_fp *fp, s32 offset, u32 whence);
#endif