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/**
******************************************************************************
*
* @file fw.c
*
* @brief ecrnx usb firmware download functions
*
* Copyright (C) ESWIN 2015-2020
*
******************************************************************************
*/
#include <linux/firmware.h>
#include "core.h"
#include "usb.h"
#include "fw_head_check.h"
extern char *fw_name;
#define MAX_PACKET_SIZE 512
#define DATA_ADDR_O 0x20000
#define DATA_ADDR_O_1 0x10000
struct cfg_sync
{
char magic;
char type;
short length;
char crc8;
};
struct cfg_msg
{
char magic;
char type;
short length;
unsigned int data_addr;
unsigned int data_len;
char crc8;
};
typedef struct _ack_msg
{
unsigned char magic;
unsigned char type;
unsigned short length;
char data[0];
} ack_msg;
typedef enum
{
STATU_SUCCESS = 0,
STATU_ERR
} ACK_STATUS;
unsigned char eswin_crc8(unsigned char * buf, unsigned short length)
{
unsigned char crc = 0, i = 0;
while(length--)
{
crc ^= *buf++;
for(i = 8; i > 0; i--)
{
if(crc & 0x80)
{
crc = (crc << 1) ^ 0x31;
}
else
{
crc <<= 1;
}
}
}
return crc;
}
char eswin_fw_ack_check(u8 * buff)
{
ack_msg* msg = (ack_msg*)buff;
if(msg->magic != 0x5a)
{
ECRNX_PRINT("dl-fw ack fail, magic: %d\n", msg->magic);
return -1;
}
if(msg->data[0] != STATU_SUCCESS)
{
ECRNX_PRINT("dl-fw ack fail, status: %d\n", msg->data[0]);
return -1;
}
return 0;
}
char eswin_fw_file_download(struct eswin *tr)
{
int ret,i;
unsigned int lengthLeft, lengthSend, offset = HEAD_SIZE, total_send_len = 0;
unsigned char length_str[9]={0};
const u8 * dataAddr;
u8 * buff;
struct sk_buff *skb;
//char str_msg[16];
char str_sync[4] = {0x63,0x6e,0x79,0x73};
unsigned int file_load_addr[3] = {0x20000U, 0x40000U, 0x50000U}; // ilm addr(start addr); dlm addr; iram0 addr
struct cfg_msg * p_msg;
struct cfg_sync * p_sync;
u8 prev_dl_pst = 0;
skb = dev_alloc_skb(MAX_PACKET_SIZE + 16);
buff = (u8 *)skb->data;
p_msg = (struct cfg_msg *)buff;
p_sync = (struct cfg_sync *)buff;
lengthLeft = tr->fw->size;
dataAddr = tr->fw->data;
/* 0 download sync*/
memcpy(buff,str_sync,4);
tr->ops->write(tr,buff,4);
ret = tr->ops->wait_ack(tr,buff,1);
ECRNX_PRINT("dl-fw >> sync, ret: %d\n", ret);
if((buff[0] != '3')||(ret < 0))
{
ECRNX_PRINT("dl-fw >> download sync fail, ack: %d\n", buff[0]);
dev_kfree_skb(skb);
return -1;
}
/* 1 usb sync */
p_sync->magic = 0xA5;
p_sync->type = 0x00;
p_sync->length = 0x00;
p_sync->crc8 = eswin_crc8(buff,sizeof(struct cfg_msg)-1);
tr->ops->write(tr, buff, sizeof(struct cfg_sync));
ret = tr->ops->wait_ack(tr, buff, 6);
ECRNX_PRINT("dl-fw >> sync, ret: %d\n", ret);
if((eswin_fw_ack_check(buff) < 0)||(ret < 0))
{
dev_kfree_skb(skb);
ECRNX_PRINT("fimeware download fail! \n");
return -1;
}
for(i=0;i<3;i++)
{
memcpy(length_str, dataAddr + offset, 8);
ret = kstrtoint(length_str, 10, (int*)&lengthLeft);
offset+=8;
/* 2 cfg */
p_msg->magic = 0xA5;
p_msg->type = 0x01;
p_msg->length = 0x08;
p_msg->data_addr = file_load_addr[i];
p_msg->data_len = lengthLeft;
p_msg->crc8 = 0x00;
tr->ops->write(tr, buff, sizeof(struct cfg_msg));
ret = tr->ops->wait_ack(tr, buff, 6);
if((eswin_fw_ack_check(buff) < 0)||(ret < 0))
{
dev_kfree_skb(skb);
ECRNX_PRINT("fimeware download fail! \n");
return -1;
}
buff[0] = 0xA5;
buff[1] = 0x01;
/* 3 load fw */
do {
lengthSend = (lengthLeft >= MAX_PACKET_SIZE) ? MAX_PACKET_SIZE : lengthLeft;
total_send_len += lengthSend;
buff[0] = 0xA5;
buff[1] = 0x01;
buff[2] = lengthSend & 0xFF;
buff[3] = (lengthSend>>8) & 0xFF;
memcpy(&buff[4], dataAddr + offset, lengthSend);
tr->ops->write(tr, buff, lengthSend + 5);
if(lengthSend >= MAX_PACKET_SIZE)
{
if(prev_dl_pst < total_send_len/(tr->fw->size/100))
{
prev_dl_pst = total_send_len/(tr->fw->size/100);
ECRNX_PRINT("firmware downloading %d%% \n", prev_dl_pst);
}
}
else if(i == 2)
{
ECRNX_PRINT("firmware downloading 100%% \n");
}
ret = tr->ops->wait_ack(tr, buff, 6);
if((eswin_fw_ack_check(buff) < 0)||(ret < 0))
{
dev_kfree_skb(skb);
ECRNX_PRINT("fimeware download fail! \n");
return -1;
}
offset += lengthSend;
lengthLeft -= lengthSend;
} while(lengthLeft);
}
/* 4 start up */
buff[0] = 0xA5;
buff[1] = 0x06;
buff[2] = 0x02;
buff[3] = 0x00;
buff[4] = (char)((file_load_addr[0]) & 0xFF);
buff[5] = (char)(((file_load_addr[0])>>8) & 0xFF);
buff[6] = (char)(((file_load_addr[0])>>16) & 0xFF);
buff[7] = (char)(((file_load_addr[0])>>24) & 0xFF);
tr->ops->write(tr, skb->data, 9);
tr->ops->wait_ack(tr, buff, 6);
if((eswin_fw_ack_check(buff) < 0)||(ret < 0))
{
dev_kfree_skb(skb);
ECRNX_PRINT("fimeware download fail! \n");
return -1;
}
ECRNX_PRINT("fimeware download successfully! \n");
dev_kfree_skb(skb);
return 0;
}
bool eswin_fw_file_chech(struct eswin *tr)
{
int status;
if (fw_name == NULL)
goto err_fw;
//if (tr->fw)
// return true;
ECRNX_PRINT("%s, Checking firmware... (%s)\n", __func__, fw_name);
status = request_firmware((const struct firmware **)&tr->fw, fw_name, tr->dev);
if (status != 0) {
ECRNX_PRINT("%s, error status = %d\n", __func__, status);
goto err_fw;
}
ECRNX_PRINT("%s, request fw OK and size is %d\n", __func__, tr->fw->size);
if(fw_check_head(tr) == false)
{
goto err_fw;
}
return true;
err_fw:
tr->fw = NULL;
return false;
}
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