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PL286/system/nfc/halimpl/bcm2079x/adaptation/patchram.cpp

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/******************************************************************************
*
* Copyright (C) 1999-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#define LOG_TAG "NfcNciHal"
#include "_OverrideLog.h"
#include "config.h"
#include "nfc_hal_int.h"
#include "userial.h"
extern "C" {
#include "nfc_hal_post_reset.h"
}
#include <cutils/properties.h>
#include <inttypes.h>
#include <malloc.h>
#include <string>
#include "StartupConfig.h"
#include "spdhelper.h"
#define FW_PRE_PATCH "FW_PRE_PATCH"
#define FW_PATCH "FW_PATCH"
#define MAX_RF_DATA_CREDITS "MAX_RF_DATA_CREDITS"
#define MAX_BUFFER (512)
static char sPrePatchFn[MAX_BUFFER + 1];
static char sPatchFn[MAX_BUFFER + 1];
static void* sPrmBuf = NULL;
static void* sI2cFixPrmBuf = NULL;
#define CONFIG_MAX_LEN 256
static uint8_t sConfig[CONFIG_MAX_LEN];
static StartupConfig sStartupConfig;
static StartupConfig sLptdConfig;
static StartupConfig sPreDiscoveryConfig;
static StartupConfig sXtalCustomParam;
extern uint8_t* p_nfc_hal_dm_start_up_cfg; // defined in the HAL
static uint8_t nfa_dm_start_up_vsc_cfg[CONFIG_MAX_LEN];
extern uint8_t* p_nfc_hal_dm_start_up_vsc_cfg; // defined in the HAL
extern uint8_t* p_nfc_hal_dm_lptd_cfg; // defined in the HAL
static uint8_t sDontSendLptd[] = {0};
extern uint8_t* p_nfc_hal_pre_discover_cfg; // defined in the HAL
extern uint8_t* p_nfc_hal_dm_xtal_params_cfg; // defined in HAL
extern tSNOOZE_MODE_CONFIG gSnoozeModeCfg;
extern tNFC_HAL_CFG* p_nfc_hal_cfg;
static void mayDisableSecureElement(StartupConfig& config);
/* Default patchfile (in NCD format) */
#ifndef NFA_APP_DEFAULT_PATCHFILE_NAME
#define NFA_APP_DEFAULT_PATCHFILE_NAME "\0"
#endif
/* Default patchfile (in NCD format) */
#ifndef NFA_APP_DEFAULT_I2C_PATCHFILE_NAME
#define NFA_APP_DEFAULT_I2C_PATCHFILE_NAME "\0"
#endif
tNFC_POST_RESET_CB nfc_post_reset_cb = {
/* Default Patch & Pre-Patch */
NFA_APP_DEFAULT_PATCHFILE_NAME,
NULL,
NFA_APP_DEFAULT_I2C_PATCHFILE_NAME,
NULL,
/* Default UART baud rate */
NFC_HAL_DEFAULT_BAUD,
/* Default tNFC_HAL_DEV_INIT_CFG (flags, num_xtal_cfg, {brcm_hw_id,
xtal-freq, xtal-index} ) */
{2, /* number of valid entries */
{
{0x43341000, 37400,
NFC_HAL_XTAL_INDEX_37400}, // All revisions of 43341 use 37,400
{0x20795000, 26000, NFC_HAL_XTAL_INDEX_26000},
{0, 0, 0},
{0, 0, 0},
{0, 0, 0},
}},
/* Default low power mode settings */
NFC_HAL_LP_SNOOZE_MODE_NONE, /* Snooze Mode */
NFC_HAL_LP_IDLE_THRESHOLD_HOST, /* Idle Threshold Host */
NFC_HAL_LP_IDLE_THRESHOLD_HC, /* Idle Threshold HC */
NFC_HAL_LP_ACTIVE_LOW, /* NFC_WAKE Active Mode */
NFC_HAL_LP_ACTIVE_HIGH, /* DH_WAKE Active Mode */
NFA_APP_MAX_NUM_REINIT, /* max retry to get NVM type */
0, /* current retry count */
TRUE, /* debug mode for downloading patchram */
FALSE /* skip downloading patchram after reinit because of patch download
failure */
};
/*******************************************************************************
**
** Function getFileLength
**
** Description return the size of a file
**
** Returns file size in number of bytes
**
*******************************************************************************/
static long getFileLength(FILE* fp) {
long sz;
fseek(fp, 0L, SEEK_END);
sz = ftell(fp);
fseek(fp, 0L, SEEK_SET);
return (sz > 0) ? sz : 0;
}
/*******************************************************************************
**
** Function isFileExist
**
** Description Check if file name exists (android does not support fexists)
**
** Returns TRUE if file exists
**
*******************************************************************************/
static bool isFileExist(const char* pFilename) {
FILE* pf;
pf = fopen(pFilename, "r");
if (pf != NULL) {
fclose(pf);
return TRUE;
}
return FALSE;
}
/*******************************************************************************
**
** Function findPatchramFile
**
** Description Find the patchram file name specified in the .conf
**
** Returns pointer to the file name
**
*******************************************************************************/
static const char* findPatchramFile(const char* pConfigName, char* pBuffer,
int bufferLen) {
ALOGD("%s: config=%s", __func__, pConfigName);
if (pConfigName == NULL) {
ALOGD("%s No patchfile defined\n", __func__);
return NULL;
}
if (GetStrValue(pConfigName, &pBuffer[0], bufferLen)) {
ALOGD("%s found patchfile %s\n", __func__, pBuffer);
return (pBuffer[0] == '\0') ? NULL : pBuffer;
}
ALOGD("%s Cannot find patchfile '%s'\n", __func__, pConfigName);
return NULL;
}
/*******************************************************************************
**
** Function: continueAfterSetSnoozeMode
**
** Description: Called after Snooze Mode is enabled.
**
** Returns: none
**
*******************************************************************************/
static void continueAfterSetSnoozeMode(tHAL_NFC_STATUS status) {
ALOGD("%s: status=%u", __func__, status);
// let stack download firmware during next initialization
nfc_post_reset_cb.spd_skip_on_power_cycle = FALSE;
if (status == NCI_STATUS_OK)
HAL_NfcPreInitDone(HAL_NFC_STATUS_OK);
else
HAL_NfcPreInitDone(HAL_NFC_STATUS_FAILED);
}
/*******************************************************************************
**
** Function: postDownloadPatchram
**
** Description: Called after patch download
**
** Returns: none
**
*******************************************************************************/
static void postDownloadPatchram(tHAL_NFC_STATUS status) {
ALOGD("%s: status=%i", __func__, status);
GetStrValue(NAME_SNOOZE_MODE_CFG, (char*)&gSnoozeModeCfg,
sizeof(gSnoozeModeCfg));
if (status != HAL_NFC_STATUS_OK) {
ALOGE("%s: Patch download failed", __func__);
if (status == HAL_NFC_STATUS_REFUSED) {
SpdHelper::setPatchAsBad();
} else
SpdHelper::incErrorCount();
/* If in SPD Debug mode, fail immediately and obviously */
if (SpdHelper::isSpdDebug())
HAL_NfcPreInitDone(HAL_NFC_STATUS_FAILED);
else {
/* otherwise, power cycle the chip and let the stack startup normally */
ALOGD("%s: re-init; don't download firmware", __func__);
// stop stack from downloading firmware during next initialization
nfc_post_reset_cb.spd_skip_on_power_cycle = TRUE;
USERIAL_PowerupDevice(0);
HAL_NfcReInit();
}
}
/* Set snooze mode here */
else if (gSnoozeModeCfg.snooze_mode != NFC_HAL_LP_SNOOZE_MODE_NONE) {
status = HAL_NfcSetSnoozeMode(
gSnoozeModeCfg.snooze_mode, gSnoozeModeCfg.idle_threshold_dh,
gSnoozeModeCfg.idle_threshold_nfcc, gSnoozeModeCfg.nfc_wake_active_mode,
gSnoozeModeCfg.dh_wake_active_mode, continueAfterSetSnoozeMode);
if (status != NCI_STATUS_OK) {
ALOGE("%s: Setting snooze mode failed, status=%i", __func__, status);
HAL_NfcPreInitDone(HAL_NFC_STATUS_FAILED);
}
} else {
ALOGD("%s: Not using Snooze Mode", __func__);
HAL_NfcPreInitDone(HAL_NFC_STATUS_OK);
}
}
/*******************************************************************************
**
** Function: prmCallback
**
** Description: Patchram callback (for static patchram mode)
**
** Returns: none
**
*******************************************************************************/
void prmCallback(uint8_t event) {
ALOGD("%s: event=0x%x", __func__, event);
switch (event) {
case NFC_HAL_PRM_CONTINUE_EVT:
/* This event does not occur if static patchram buf is used */
break;
case NFC_HAL_PRM_COMPLETE_EVT:
postDownloadPatchram(HAL_NFC_STATUS_OK);
break;
case NFC_HAL_PRM_ABORT_EVT:
postDownloadPatchram(HAL_NFC_STATUS_FAILED);
break;
case NFC_HAL_PRM_ABORT_INVALID_PATCH_EVT:
ALOGD("%s: invalid patch...skipping patch download", __func__);
postDownloadPatchram(HAL_NFC_STATUS_REFUSED);
break;
case NFC_HAL_PRM_ABORT_BAD_SIGNATURE_EVT:
ALOGD("%s: patch authentication failed", __func__);
postDownloadPatchram(HAL_NFC_STATUS_REFUSED);
break;
case NFC_HAL_PRM_ABORT_NO_NVM_EVT:
ALOGD("%s: No NVM detected", __func__);
HAL_NfcPreInitDone(HAL_NFC_STATUS_FAILED);
break;
default:
ALOGD("%s: not handled event=0x%x", __func__, event);
break;
}
}
/*******************************************************************************
**
** Function getNfaValues
**
** Description Get configuration values needed by NFA layer
**
** Returns: None
**
*******************************************************************************/
static void getNfaValues(uint32_t chipid) {
unsigned long num = 0;
int actualLen = 0;
sStartupConfig.initialize();
sLptdConfig.initialize();
sPreDiscoveryConfig.initialize();
actualLen =
GetStrValue(NAME_NFA_DM_START_UP_CFG, (char*)sConfig, sizeof(sConfig));
if (actualLen) sStartupConfig.append(sConfig, actualLen);
// Set antenna tuning configuration if configured.
actualLen =
GetStrValue(NAME_PREINIT_DSP_CFG, (char*)sConfig, sizeof(sConfig));
if (actualLen) sStartupConfig.append(sConfig, actualLen);
if (GetStrValue(NAME_NFA_DM_START_UP_VSC_CFG, (char*)nfa_dm_start_up_vsc_cfg,
sizeof(nfa_dm_start_up_vsc_cfg))) {
p_nfc_hal_dm_start_up_vsc_cfg = &nfa_dm_start_up_vsc_cfg[0];
ALOGD("START_UP_VSC_CFG[0] = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
nfa_dm_start_up_vsc_cfg[0], nfa_dm_start_up_vsc_cfg[1],
nfa_dm_start_up_vsc_cfg[2], nfa_dm_start_up_vsc_cfg[3],
nfa_dm_start_up_vsc_cfg[4], nfa_dm_start_up_vsc_cfg[5],
nfa_dm_start_up_vsc_cfg[6], nfa_dm_start_up_vsc_cfg[7]);
}
actualLen = GetStrValue(NAME_LPTD_CFG, (char*)sConfig, sizeof(sConfig));
if (actualLen) {
sLptdConfig.append(sConfig, actualLen);
p_nfc_hal_dm_lptd_cfg =
const_cast<uint8_t*>(sLptdConfig.getInternalBuffer());
} else {
// Default to not sending any LPTD setting.
p_nfc_hal_dm_lptd_cfg = sDontSendLptd;
}
mayDisableSecureElement(sStartupConfig);
p_nfc_hal_dm_start_up_cfg =
const_cast<uint8_t*>(sStartupConfig.getInternalBuffer());
actualLen = GetStrValue(NAME_NFA_DM_PRE_DISCOVERY_CFG, (char*)sConfig,
sizeof(sConfig));
if (actualLen) {
sPreDiscoveryConfig.append(sConfig, actualLen);
mayDisableSecureElement(sPreDiscoveryConfig);
p_nfc_hal_pre_discover_cfg =
const_cast<uint8_t*>(sPreDiscoveryConfig.getInternalBuffer());
}
// configure how many secure elements are available for each type of chip
if (p_nfc_hal_cfg->nfc_hal_hci_uicc_support > 0) {
if ((chipid & BRCM_NFC_GEN_MASK) == BRCM_NFC_20791_GEN) {
nfc_hal_cb.max_ee = BRCM_NFC_20791_GEN_MAX_EE;
p_nfc_hal_cfg->nfc_hal_hci_uicc_support =
HAL_NFC_HCI_UICC0_HOST | HAL_NFC_HCI_UICC1_HOST;
} else if ((chipid & BRCM_NFC_GEN_MASK) == BRCM_NFC_43341_GEN) {
nfc_hal_cb.max_ee = BRCM_NFC_43341_GEN_MAX_EE;
p_nfc_hal_cfg->nfc_hal_hci_uicc_support =
HAL_NFC_HCI_UICC0_HOST | HAL_NFC_HCI_UICC1_HOST;
} else if ((chipid & BRCM_NFC_GEN_MASK) == BRCM_NFC_20795_GEN) {
nfc_hal_cb.max_ee = BRCM_NFC_20795_GEN_MAX_EE;
p_nfc_hal_cfg->nfc_hal_hci_uicc_support = HAL_NFC_HCI_UICC0_HOST |
HAL_NFC_HCI_UICC1_HOST |
HAL_NFC_HCI_UICC2_HOST;
}
// let .conf variable determine how many EE's to discover
if (GetNumValue(NAME_NFA_MAX_EE_SUPPORTED, &num, sizeof(num)))
nfc_hal_cb.max_ee = num;
}
}
/*******************************************************************************
**
** Function StartPatchDownload
**
** Description Reads configuration settings, and begins the download
** process if patch files are configured.
**
** Returns: None
**
*******************************************************************************/
static void StartPatchDownload(uint32_t chipid) {
ALOGD("%s: chipid=%" PRIu32, __func__, chipid);
char chipID[30];
sprintf(chipID, "%" PRIu32, chipid);
ALOGD("%s: chidId=%s", __func__, chipID);
readOptionalConfig(chipID); // Read optional chip specific settings
readOptionalConfig("fime"); // Read optional FIME specific settings
getNfaValues(chipid); // Get NFA configuration values into variables
findPatchramFile(FW_PATCH, sPatchFn, sizeof(sPatchFn));
findPatchramFile(FW_PRE_PATCH, sPrePatchFn, sizeof(sPatchFn));
{
FILE* fd;
/* If an I2C fix patch file was specified, then tell the stack about it */
if (sPrePatchFn[0] != '\0') {
fd = fopen(sPrePatchFn, "rb");
if (fd != NULL) {
uint32_t lenPrmBuffer = getFileLength(fd);
sI2cFixPrmBuf = malloc(lenPrmBuffer);
if (sI2cFixPrmBuf != NULL) {
size_t actualLen = fread(sI2cFixPrmBuf, 1, lenPrmBuffer, fd);
if (actualLen == lenPrmBuffer) {
ALOGD("%s Setting I2C fix to %s (size: %" PRIu32 ")", __func__,
sPrePatchFn, lenPrmBuffer);
HAL_NfcPrmSetI2cPatch((uint8_t*)sI2cFixPrmBuf,
(uint16_t)lenPrmBuffer, 0);
} else
ALOGE(
"%s fail reading i2c fix; actual len=%zu; expected len="
"%" PRIu32,
__func__, actualLen, lenPrmBuffer);
} else {
ALOGE("%s Unable to get buffer to i2c fix (%" PRIu32 " bytes)",
__func__, lenPrmBuffer);
}
fclose(fd);
} else {
ALOGE("%s Unable to open i2c fix patchfile %s", __func__, sPrePatchFn);
}
}
}
{
FILE* fd;
/* If a patch file was specified, then download it now */
if (sPatchFn[0] != '\0') {
uint32_t bDownloadStarted = false;
/* open patchfile, read it into a buffer */
fd = fopen(sPatchFn, "rb");
if (fd != NULL) {
uint32_t lenPrmBuffer = getFileLength(fd);
ALOGD("%s Downloading patchfile %s (size: %" PRIu32 ") format=%u",
__func__, sPatchFn, lenPrmBuffer, NFC_HAL_PRM_FORMAT_NCD);
sPrmBuf = malloc(lenPrmBuffer);
if (sPrmBuf != NULL) {
size_t actualLen = fread(sPrmBuf, 1, lenPrmBuffer, fd);
if (actualLen == lenPrmBuffer) {
if (!SpdHelper::isPatchBad((uint8_t*)sPrmBuf, lenPrmBuffer)) {
/* Download patch using static memeory mode */
HAL_NfcPrmDownloadStart(NFC_HAL_PRM_FORMAT_NCD, 0,
(uint8_t*)sPrmBuf, lenPrmBuffer, 0,
prmCallback);
bDownloadStarted = true;
}
} else
ALOGE("%s fail reading patchram", __func__);
} else
ALOGE("%s Unable to buffer to hold patchram (%" PRIu32 " bytes)",
__func__, lenPrmBuffer);
fclose(fd);
} else
ALOGE("%s Unable to open patchfile %s", __func__, sPatchFn);
/* If the download never got started */
if (!bDownloadStarted) {
/* If debug mode, fail in an obvious way, otherwise try to start stack
*/
postDownloadPatchram(SpdHelper::isSpdDebug() ? HAL_NFC_STATUS_FAILED
: HAL_NFC_STATUS_OK);
}
} else {
ALOGE(
"%s: No patchfile specified or disabled. Proceeding to post-download "
"procedure...",
__func__);
postDownloadPatchram(HAL_NFC_STATUS_OK);
}
}
ALOGD("%s: exit", __func__);
}
/*******************************************************************************
**
** Function: nfc_hal_post_reset_init
**
** Description: Called by the NFC HAL after controller has been reset.
** Begin to download firmware patch files.
**
** Returns: none
**
*******************************************************************************/
void nfc_hal_post_reset_init(uint32_t brcm_hw_id, uint8_t nvm_type) {
ALOGD("%s: brcm_hw_id=0x%" PRIu32 ", nvm_type=%d", __func__, brcm_hw_id,
nvm_type);
tHAL_NFC_STATUS stat = HAL_NFC_STATUS_FAILED;
uint8_t max_credits = 1, allow_no_nvm = 0;
p_nfc_hal_cfg->nfc_hal_prm_nvm_required =
TRUE; // don't download firmware if controller cannot detect EERPOM
if (nvm_type == NCI_SPD_NVM_TYPE_NONE) {
GetNumValue(NAME_ALLOW_NO_NVM, &allow_no_nvm, sizeof(allow_no_nvm));
if (allow_no_nvm == 0) {
ALOGD("%s: No NVM detected, FAIL the init stage to force a retry",
__func__);
USERIAL_PowerupDevice(0);
stat = HAL_NfcReInit();
return;
}
p_nfc_hal_cfg->nfc_hal_prm_nvm_required =
FALSE; // allow download firmware if controller cannot detect EERPOM
}
/* Start downloading the patch files */
StartPatchDownload(brcm_hw_id);
if (GetNumValue(MAX_RF_DATA_CREDITS, &max_credits, sizeof(max_credits)) &&
(max_credits > 0)) {
ALOGD("%s : max_credits=%d", __func__, max_credits);
HAL_NfcSetMaxRfDataCredits(max_credits);
}
}
/*******************************************************************************
**
** Function: mayDisableSecureElement
**
** Description: Optionally adjust a TLV to disable secure element. This
*feature
** is enabled by setting the system property
** nfc.disable_secure_element to a bit mask represented by a
*hex
** octet: C0 = do not detect any secure element.
** 40 = do not detect secure element in slot 0.
** 80 = do not detect secure element in slot 1.
**
** config: a sequence of TLV's.
**
*******************************************************************************/
void mayDisableSecureElement(StartupConfig& config) {
unsigned int bitmask = 0;
char valueStr[PROPERTY_VALUE_MAX] = {0};
int len = property_get("nfc.disable_secure_element", valueStr, "");
if (len > 0) {
sscanf(valueStr, "%x", &bitmask); // read system property as a hex octet
ALOGD("%s: disable 0x%02X", __func__, (uint8_t)bitmask);
config.disableSecureElement((uint8_t)(bitmask & 0xC0));
}
}
/*******************************************************************************
**
** Function: configureCrystalFrequency
**
** Description: Configure controller's crystal frequency by reading values from
** .conf file. If .conf file does not define any value, then use
** default values defined in struct nfc_post_reset_cb.
**
** Returns: none
**
*******************************************************************************/
void configureCrystalFrequency() {
unsigned long num = 0;
uint32_t hwId = 0;
uint16_t xtalFreq = 0;
uint8_t xtalIndex = 0;
int actualLen = 0;
if (GetNumValue(NAME_XTAL_HARDWARE_ID, &num, sizeof(num))) hwId = num;
if (GetNumValue(NAME_XTAL_FREQUENCY, &num, sizeof(num)))
xtalFreq = (uint16_t)num;
if (GetNumValue(NAME_XTAL_FREQ_INDEX, &num, sizeof(num)))
xtalIndex = (uint8_t)num;
actualLen =
GetStrValue(NAME_XTAL_PARAMS_CFG, (char*)sConfig, sizeof(sConfig));
if (actualLen &&
(xtalIndex ==
NFC_HAL_XTAL_INDEX_SPECIAL)) // whether to use custom crystal frequency
{
sXtalCustomParam.append(sConfig, actualLen);
p_nfc_hal_dm_xtal_params_cfg =
const_cast<uint8_t*>(sXtalCustomParam.getInternalBuffer());
}
if ((hwId == 0) && (xtalFreq == 0) && (xtalIndex == 0)) return;
ALOGD("%s: hwId=0x%" PRIX32 "; freq=%u; index=%u", __func__, hwId, xtalFreq,
xtalIndex);
nfc_post_reset_cb.dev_init_config.xtal_cfg[0].brcm_hw_id =
(hwId & BRCM_NFC_GEN_MASK);
nfc_post_reset_cb.dev_init_config.xtal_cfg[0].xtal_freq = xtalFreq;
nfc_post_reset_cb.dev_init_config.xtal_cfg[0].xtal_index = xtalIndex;
nfc_post_reset_cb.dev_init_config.num_xtal_cfg = 1;
}