📄 gcu.c
字号:
/*****************************************************************************
* Copyright Statement:
* --------------------
* This software is protected by Copyright and the information contained
* herein is confidential. The software may not be copied and the information
* contained herein may not be used or disclosed except with the written
* permission of MediaTek Inc. (C) 2005
*
* BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
* NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
* SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
* BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
* LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*
* THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
* WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
* LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
* RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
* THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/
/*****************************************************************************
*
* Filename:
* ---------
* gcu.c
*
* Project:
* --------
* Maui_Software
*
* Description:
* ------------
* This Module defines the GCU driver.
*
* Author:
* -------
* -------
*
*============================================================================
* HISTORY
* Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*------------------------------------------------------------------------------
* removed!
* removed!
* removed!
*
* removed!
* removed!
* removed!
*
* removed!
* removed!
* removed!
*
* removed!
* removed!
* removed!
*
* removed!
* removed!
* removed!
*
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
* removed!
*
*------------------------------------------------------------------------------
* Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*============================================================================
****************************************************************************/
#include "drv_comm.h"
#include "gcu.h"
#include "drvpdn.h"
#include "reg_base.h"
#if ( (defined(MT6218B)) || (defined(MT6219))|| (defined(MT6217))|| (defined(MT6228))|| (defined(MT6229)) || defined(MT6230)|| (defined(MT6226))|| (defined(MT6227))||defined(MT6226M) )
/*
* FUNCTION
* GCU_isBUZY
*
* DESCRIPTION
* check whether GCU is computing new keyn stream
*
* CALLS
*
* PARAMETERS
* None
*
* RETURNS
* KAL_TRUE, GCU is computing new keyn stream
* KAL_FALSE, GCU isn't computing new keyn stream
*
* GLOBALS AFFECTED
* external_global
*/
kal_bool GCU_isBUZY(void)
{
kal_uint32 STAT = DRV_Reg32(GCU_STAT);
if (STAT & GCU_STAT_BUZY)
{
return KAL_TRUE;
}
else
{
return KAL_FALSE;
}
}
/*
* FUNCTION
* GCU_InputData
*
* DESCRIPTION
* Input GPRS Encryption Algorithm keys.
* (Message keys and Secret keys)
*
* CALLS
*
* PARAMETERS
* data: the struct of the message keys and secret keys
*
* RETURNS
* None
*
* GLOBALS AFFECTED
* external_global
*/
void GCU_InputData(gcu_input *data)
{
//Secret Key 0-4
DRV_WriteReg32(GCU_KC0,((data->SK1 << 16) | data->SK0));
DRV_WriteReg32(GCU_KC1,((data->SK3 << 16) | data->SK2));
//Message Key 0-1
DRV_WriteReg32(GCU_INPUT,((data->MK1 << 16) | data->MK0));
if (data->DIRECTION == 1)
DRV_WriteReg32(GCU_CTRL,(GCU_CTRL_DIR |GCU_CTRL_NORMAL));
else
DRV_WriteReg32(GCU_CTRL,GCU_CTRL_NORMAL);
}
#else /*!MT6218*/
/*
* FUNCTION
* GCU_isBUZY
*
* DESCRIPTION
* check whether GCU is computing new keyn stream
*
* CALLS
*
* PARAMETERS
* None
*
* RETURNS
* KAL_TRUE, GCU is computing new keyn stream
* KAL_FALSE, GCU isn't computing new keyn stream
*
* GLOBALS AFFECTED
* external_global
*/
kal_bool GCU_isBUZY(void)
{
kal_uint16 STAT = DRV_Reg(GCU_STAT);
if (STAT & GCU_STAT_BUZY)
{
return KAL_TRUE;
}
else
{
return KAL_FALSE;
}
}
/*
* FUNCTION
* GCU_InputData
*
* DESCRIPTION
* Input GPRS Encryption Algorithm keys.
* (Message keys and Secret keys)
*
* CALLS
*
* PARAMETERS
* data: the struct of the message keys and secret keys
*
* RETURNS
* None
*
* GLOBALS AFFECTED
* external_global
*/
void GCU_InputData(gcu_input *data)
{
//Secret Key 0-4
DRV_WriteReg(GCU_KC0,data->SK0);
DRV_WriteReg(GCU_KC1,data->SK1);
DRV_WriteReg(GCU_KC2,data->SK2);
DRV_WriteReg(GCU_KC3,data->SK3);
//Message Key 0-1
DRV_WriteReg(GCU_INPUT0,data->MK0);
DRV_WriteReg(GCU_INPUT1,data->MK1);
if (data->DIRECTION == 1)
DRV_WriteReg(GCU_CTRL,(GCU_CTRL_DIR |GCU_CTRL_NORMAL));
else
DRV_WriteReg(GCU_CTRL,GCU_CTRL_NORMAL);
}
#endif /*MT6218*/
kal_bool gea_cidecipher (kal_uint8 *src_buff_ptr,
kal_uint8 *dest_buff_ptr,
kal_uint16 buff_len,
kal_uint8 cipher_algo,
kal_bool direction,
kal_uint8 *input_sk,
kal_uint32 input_mk)
{
kal_uint16 index1;
kal_uint16 index2;
kal_uint32 key;
kal_uint8 *key_ptr;
gcu_input input;
input.SK3 = input_sk[1] | (input_sk[0] << 8);
input.SK2 = input_sk[3] | (input_sk[2] << 8);
input.SK1 = input_sk[5] | (input_sk[4] << 8);
input.SK0 = input_sk[7] | (input_sk[6] << 8);
/* INPUT */
input.MK0 = (kal_int16) input_mk; /* LSB */
input.MK1 = (kal_int16)(input_mk >> 16); /* MSB */
input.DIRECTION = direction; /*decipher=1;cipher=0*/
key_ptr = (kal_uint8 *)&key;
DRVPDN_Disable(DRVPDN_CON0,DRVPDN_CON0_GCU,PDN_GCU);
GCU_InputData(&input);
if(cipher_algo == 1) /*A5_1 == 1*/
GCU_GEA1Start(); /* for uplink link. According to spec. 04.64 */
else if(cipher_algo == 2)
GCU_GEA2Start(); /* for uplink link. According to spec. 04.64 */
#if defined(MT6229) || defined(MT6230)
else if(cipher_algo == 3)
GCU_GEA3Start();
#endif
else
ASSERT(0);
for(index1=0;index1 < ((buff_len+3)/4);index1++)
{
GCU_ReadKey(key);
for(index2=0;index2 < 4;index2++)
{
if((index1*4+index2) == buff_len)
break;
dest_buff_ptr[(index1*4+index2)] = src_buff_ptr[(index1*4+index2)] ^ key_ptr[index2];
}
}
DRVPDN_Enable(DRVPDN_CON0,DRVPDN_CON0_GCU,PDN_GCU);
return KAL_TRUE;
}
#ifdef MT6218B/*only 6218B has this, Others projects dont have*/
void GCU_Disable_ReverseBit(void)
{
DRVPDN_Disable(DRVPDN_CON0,DRVPDN_CON0_GCU,PDN_GCU);
// clear GCU reverse bit
DRV_Reg(GCU_CTRL) &= ~GCU_CTRL_RBO;
DRVPDN_Enable(DRVPDN_CON0,DRVPDN_CON0_GCU,PDN_GCU);
}
#endif
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -