mirror of
https://github.com/fail0verflow/mini.git
synced 2024-11-05 19:25:12 +01:00
168 lines
3.2 KiB
C
168 lines
3.2 KiB
C
/*
|
|
mini - a Free Software replacement for the Nintendo/BroadOn IOS.
|
|
crypto hardware support
|
|
|
|
Copyright (C) 2008, 2009 Haxx Enterprises <bushing@gmail.com>
|
|
Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
|
|
|
|
# This code is licensed to you under the terms of the GNU GPL, version 2;
|
|
# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
|
|
*/
|
|
|
|
#include "crypto.h"
|
|
#include "hollywood.h"
|
|
#include "utils.h"
|
|
#include "memory.h"
|
|
#include "irq.h"
|
|
#include "ipc.h"
|
|
#include "gecko.h"
|
|
#include "string.h"
|
|
#include "seeprom.h"
|
|
|
|
#define AES_CMD_RESET 0
|
|
#define AES_CMD_DECRYPT 0x9800
|
|
|
|
otp_t otp;
|
|
seeprom_t seeprom;
|
|
|
|
void crypto_read_otp(void)
|
|
{
|
|
u32 *otpd = (u32*)&otp;
|
|
int i;
|
|
for (i=0; i< 0x20; i++) {
|
|
write32(HW_OTPCMD,0x80000000|i);
|
|
*otpd++ = read32(HW_OTPDATA);
|
|
}
|
|
}
|
|
|
|
void crypto_read_seeprom(void)
|
|
{
|
|
seeprom_read(&seeprom, 0, sizeof(seeprom) / 2);
|
|
}
|
|
|
|
void crypto_initialize()
|
|
{
|
|
crypto_read_otp();
|
|
crypto_read_seeprom();
|
|
write32(AES_CMD, 0);
|
|
while (read32(AES_CMD) != 0);
|
|
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;
|
|
case IPC_KEYS_GETEEP:
|
|
memcpy((void *)req->args[0], &seeprom, sizeof(seeprom));
|
|
dc_flushrange((void *)req->args[0], sizeof(seeprom));
|
|
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;
|
|
|
|
void aes_irq()
|
|
{
|
|
_aes_irq = 1;
|
|
}
|
|
|
|
static inline void aes_command(u16 cmd, u8 iv_keep, u32 blocks)
|
|
{
|
|
if (blocks != 0)
|
|
blocks--;
|
|
_aes_irq = 0;
|
|
write32(AES_CMD, (cmd << 16) | (iv_keep ? 0x1000 : 0) | (blocks&0x7f));
|
|
while (read32(AES_CMD) & 0x80000000);
|
|
}
|
|
|
|
void aes_reset(void)
|
|
{
|
|
write32(AES_CMD, 0);
|
|
while (read32(AES_CMD) != 0);
|
|
}
|
|
|
|
void aes_set_iv(u8 *iv)
|
|
{
|
|
int i;
|
|
for(i = 0; i < 4; i++) {
|
|
write32(AES_IV, *(u32 *)iv);
|
|
iv += 4;
|
|
}
|
|
}
|
|
|
|
void aes_empty_iv()
|
|
{
|
|
int i;
|
|
for(i = 0; i < 4; i++)
|
|
write32(AES_IV, 0);
|
|
}
|
|
|
|
void aes_set_key(u8 *key)
|
|
{
|
|
int i;
|
|
for(i = 0; i < 4; i++) {
|
|
write32(AES_KEY, *(u32 *)key);
|
|
key += 4;
|
|
}
|
|
}
|
|
|
|
void aes_decrypt(u8 *src, u8 *dst, u32 blocks, u8 keep_iv)
|
|
{
|
|
int this_blocks = 0;
|
|
while(blocks > 0) {
|
|
this_blocks = blocks;
|
|
if (this_blocks > 0x80)
|
|
this_blocks = 0x80;
|
|
|
|
write32(AES_SRC, dma_addr(src));
|
|
write32(AES_DEST, dma_addr(dst));
|
|
|
|
dc_flushrange(src, blocks * 16);
|
|
dc_invalidaterange(dst, blocks * 16);
|
|
|
|
ahb_flush_to(AHB_AES);
|
|
aes_command(AES_CMD_DECRYPT, keep_iv, this_blocks);
|
|
ahb_flush_from(AHB_AES);
|
|
ahb_flush_to(AHB_STARLET);
|
|
|
|
blocks -= this_blocks;
|
|
src += this_blocks<<4;
|
|
dst += this_blocks<<4;
|
|
keep_iv = 1;
|
|
}
|
|
|
|
}
|
|
|
|
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);
|
|
}
|
|
|