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incubator-nuttx/drivers/wireless/cc3000/nvmem.c

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/****************************************************************************
* drivers/wireless/cc3000/nvmem.c - CC3000 Host Driver Implementation.
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <nuttx/wireless/cc3000/nvmem.h>
#include <nuttx/wireless/cc3000/hci.h>
#include <nuttx/wireless/cc3000/evnt_handler.h>
#include "cc3000.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define NVMEM_READ_PARAMS_LEN (12)
#define NVMEM_CREATE_PARAMS_LEN (8)
#define NVMEM_WRITE_PARAMS_LEN (16)
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nvmem_read
*
* Description:
* Reads data from the file referred by the ulFileId parameter. Reads data
* from file ulOffset till length. Err if the file can't be used, is
* invalid, or if the read is out of bounds.
*
* Input Parameters:
* ulFileId nvmem file id:
* NVMEM_NVS_FILEID, NVMEM_NVS_SHADOW_FILEID,
* NVMEM_WLAN_CONFIG_FILEID, NVMEM_WLAN_CONFIG_SHADOW_FILEID,
* NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
* NVMEM_MAC_FILEID, NVMEM_FRONTEND_VARS_FILEID,
* NVMEM_IP_CONFIG_FILEID, NVMEM_IP_CONFIG_SHADOW_FILEID,
* NVMEM_BOOTLOADER_SP_FILEID, NVMEM_RM_FILEID,
* and user files 12-15.
* ulLength number of bytes to read
* ulOffset ulOffset in file from where to read
* buff output buffer pointer
*
* Returned Value:
* Number of bytes read, otherwise error.
*
****************************************************************************/
signed long nvmem_read(unsigned long ulFileId, unsigned long ulLength,
unsigned long ulOffset, uint8_t *buff)
{
uint8_t ucStatus = 0xff;
uint8_t *ptr;
uint8_t *args;
cc3000_lib_lock();
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
/* Fill in HCI packet structure */
args = UINT32_TO_STREAM(args, ulFileId);
args = UINT32_TO_STREAM(args, ulLength);
args = UINT32_TO_STREAM(args, ulOffset);
/* Initiate a HCI command */
hci_command_send(HCI_CMND_NVMEM_READ, ptr, NVMEM_READ_PARAMS_LEN);
SimpleLinkWaitEvent(HCI_CMND_NVMEM_READ, &ucStatus);
/* In case there is data - read it - even if an error code is returned
* Note: It is the user responsibility to ignore the data in case of an
* error code
*/
/* Wait for the data in a synchronous way. Here we assume that the buffer is
* big enough to store also parameters of nvmem
*/
SimpleLinkWaitData(buff, 0, &ucStatus);
cc3000_lib_unlock();
return ucStatus;
}
/****************************************************************************
* Name: nvmem_write
*
* Description:
* Write data to nvmem. Writes data to file referred by the ulFileId
* parameter. Writes data to file ulOffset till ulLength. The file id will be
* marked invalid till the write is done. The file entry doesn't need to be
* valid - only allocated.
*
* Input Parameters:
* ulFileId nvmem file id:
* NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
* NVMEM_MAC_FILEID, NVMEM_BOOTLOADER_SP_FILEID,
* and user files 12-15.
* ulLength number of bytes to write
* ulEntryOffset offset in file to start write operation from
* buff data to write
*
* Returned Value:
* On success 0, error otherwise.
*
****************************************************************************/
signed long nvmem_write(unsigned long ulFileId, unsigned long ulLength,
unsigned long ulEntryOffset, uint8_t *buff)
{
long iRes;
uint8_t *ptr;
uint8_t *args;
cc3000_lib_lock();
iRes = EFAIL;
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + SPI_HEADER_SIZE + HCI_DATA_CMD_HEADER_SIZE);
/* Fill in HCI packet structure */
args = UINT32_TO_STREAM(args, ulFileId);
args = UINT32_TO_STREAM(args, 12);
args = UINT32_TO_STREAM(args, ulLength);
args = UINT32_TO_STREAM(args, ulEntryOffset);
memcpy((ptr + SPI_HEADER_SIZE + HCI_DATA_CMD_HEADER_SIZE +
NVMEM_WRITE_PARAMS_LEN), buff, ulLength);
/* Initiate a HCI command but it will come on data channel */
hci_data_command_send(HCI_CMND_NVMEM_WRITE, ptr, NVMEM_WRITE_PARAMS_LEN,
ulLength);
SimpleLinkWaitEvent(HCI_EVNT_NVMEM_WRITE, &iRes);
cc3000_lib_unlock();
return iRes;
}
/****************************************************************************
* Name: nvmem_set_mac_address
*
* Description:
* Write MAC address to EEPROM. mac address as appears over the air (OUI
* first)
*
* Input Parameters:
* mac mac address to be set
*
* Returned Value:
* On success 0, error otherwise.
*
****************************************************************************/
uint8_t nvmem_set_mac_address(uint8_t *mac)
{
return nvmem_write(NVMEM_MAC_FILEID, MAC_ADDR_LEN, 0, mac);
}
/****************************************************************************
* Name: nvmem_get_mac_address
*
* Description:
* Read MAC address from EEPROM. mac address as appears over the air (OUI
* first)
*
* Input Parameters:
* mac mac address
*
* Returned Value:
* On success 0, error otherwise.
*
****************************************************************************/
uint8_t nvmem_get_mac_address(uint8_t *mac)
{
return nvmem_read(NVMEM_MAC_FILEID, MAC_ADDR_LEN, 0, mac);
}
/****************************************************************************
* Name: nvmem_write_patch
*
* Description:
* Program a patch to a specific file ID. The SP data is assumed to be
* organized in 2-dimensional. Each line is SP_PORTION_SIZE bytes long.
* Actual programming is applied in SP_PORTION_SIZE bytes portions.
*
* Input Parameters:
* ulFileId nvmem file id:
* NVMEM_WLAN_DRIVER_SP_FILEID, NVMEM_WLAN_FW_SP_FILEID,
* spLength number of bytes to write
* spData SP data to write
*
* Returned Value:
* On success 0, error otherwise.
*
****************************************************************************/
uint8_t nvmem_write_patch(unsigned long ulFileId, unsigned long spLength,
const uint8_t *spData)
{
FAR uint8_t *spDataPtr = (FAR uint8_t *)spData;
uint8_t status = 0;
uint16_t offset = 0;
while ((status == 0) && (spLength >= SP_PORTION_SIZE))
{
status = nvmem_write(ulFileId, SP_PORTION_SIZE, offset, spDataPtr);
offset += SP_PORTION_SIZE;
spLength -= SP_PORTION_SIZE;
spDataPtr += SP_PORTION_SIZE;
}
if (status != 0)
{
/* NVMEM error occurred */
return status;
}
if (spLength != 0)
{
/* if reached here, a reminder is left */
status = nvmem_write(ulFileId, spLength, offset, spDataPtr);
}
return status;
}
/****************************************************************************
* Name: nvmem_read_sp_version
*
* Description:
* Read patch version. read package version (WiFi FW patch,
* driver-supplicant-NS patch, bootloader patch)
*
* Input Parameters:
* patchVer first number indicates package ID and the second
* number indicates package build number
*
* Returned Value:
* On success 0, error otherwise.
*
****************************************************************************/
#ifndef CC3000_TINY_DRIVER
uint8_t nvmem_read_sp_version(uint8_t *patchVer)
{
uint8_t *ptr;
/* 1st byte is the status and the rest is the SP version */
uint8_t retBuf[5];
cc3000_lib_lock();
ptr = tSLInformation.pucTxCommandBuffer;
/* Initiate a HCI command, no args are required */
hci_command_send(HCI_CMND_READ_SP_VERSION, ptr, 0);
SimpleLinkWaitEvent(HCI_CMND_READ_SP_VERSION, retBuf);
/* Package ID */
*patchVer = retBuf[3];
/* Package build number */
*(patchVer+1) = retBuf[4];
cc3000_lib_unlock();
return retBuf[0];
}
#endif
/****************************************************************************
* Name: nvmem_create_entry
*
* Description:
* Create new file entry and allocate space on the NVMEM. Applies only to
* user files. Modify the size of file. If the entry is unallocated -
* allocate it to size ulNewLen (marked invalid). If it is allocated then
* deallocate it first. To just mark the file as invalid without resizing -
* Set ulNewLen=0.
*
* Input Parameters:
* ulFileId nvmem file Id:
* * NVMEM_AES128_KEY_FILEID: 12
* * NVMEM_SHARED_MEM_FILEID: 13
* * and fileIDs 14 and 15
* ulNewLen entry ulLength
*
* Returned Value:
* On success 0, error otherwise.
*
****************************************************************************/
signed long nvmem_create_entry(unsigned long ulFileId, unsigned long ulNewLen)
{
uint8_t *ptr;
uint8_t *args;
uint16_t retval;
cc3000_lib_lock();
ptr = tSLInformation.pucTxCommandBuffer;
args = (ptr + HEADERS_SIZE_CMD);
/* Fill in HCI packet structure */
args = UINT32_TO_STREAM(args, ulFileId);
args = UINT32_TO_STREAM(args, ulNewLen);
/* Initiate a HCI command */
hci_command_send(HCI_CMND_NVMEM_CREATE_ENTRY, ptr, NVMEM_CREATE_PARAMS_LEN);
SimpleLinkWaitEvent(HCI_CMND_NVMEM_CREATE_ENTRY, &retval);
cc3000_lib_unlock();
return retval;
}
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