这是Android的搞法 , 后面我做Linux系统后发现可以通过类似这种链接方式搞定!
Linux做法:
ln -sf /dev/ttyWCH0 /dev/ttyCH5
ln -sf /dev/ttyWCH1 /dev/ttyCH6
ln -sf /dev/ttyWCH2 /dev/ttyCH7
ln -sf /dev/ttyWCH3 /dev/ttyCH8
Android做法:
+++ b/system/core/rootdir/init.rc
@@ -245,8 +245,9 @@ on init
symlink /proc/self/fd /dev/fd
# set uart port
- symlink /dev/ttymxc2 /dev/ttyS1
+ symlink /dev/ttymxc2 /dev/ttyS2
symlink /dev/ttymxc0 /dev/ttyS3
+ symlink /dev/ttymxc3 /dev/ttyS1
这个修改主要是在多个文件中修改了UART设备的名称，并且修改了默认的调试属性。
修改的文件：
- build/make/core/main.mk
- kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_debug_defconfig
- kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_defconfig
- kernel-3.18/drivers/misc/mediatek/uart/uart.c
- 其他相关文件
文件修改说明：
1. main.mk
在这个文件中，修改了默认的调试属性。原来的属性是ro.debuggable=1，将其修改为ro.debuggable=0。
2. tb8735ap1_64_ztk_debug_defconfig 和 tb8735ap1_64_ztk_defconfig
在这两个文件中，修改了内核命令行中的UART设备名称。原来的设备名称是ttyMT3，将其修改为ttymxc3。
3. uart.c
在这个文件中，修改了UART设备的名称。原来的设备名称是ttyMT，将其修改为ttymxc。
4. 其他相关文件
在其他相关文件中，也进行了类似的修改。
diff --git a/build/make/core/main.mk b/build/make/core/main.mk index 0c16c49f636..5518141cd84 100755 --- a/build/make/core/main.mk +++ b/build/make/core/main.mk @@ -276,7 +276,7 @@ ifeq (true,$(strip $(enable_target_debugging))) INCLUDE_TEST_OTA_KEYS := true else # !enable_target_debugging # Target is less debuggable and adbd is off by default - ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1 + ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=0 endif # !enable_target_debugging ## eng ## diff --git a/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_debug_defconfig b/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_debug_defconfig index b334bd0755d..0873d48679b 100755 --- a/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_debug_defconfig +++ b/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_debug_defconfig @@ -37,7 +37,7 @@ CONFIG_ARMV8_DEPRECATED=y CONFIG_SWP_EMULATION=y CONFIG_CP15_BARRIER_EMULATION=y CONFIG_SETEND_EMULATION=y -CONFIG_CMDLINE="console=tty0 console=ttyMT3,921600n1 root=/dev/ram vmalloc=496M slub_max_order=0 slub_debug=O " +CONFIG_CMDLINE="console=tty0 console=ttymxc3,921600n1 root=/dev/ram vmalloc=496M slub_max_order=0 slub_debug=O " # CONFIG_EFI is not set CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE=y CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE_NAMES="mt6735" diff --git a/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_defconfig b/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_defconfig index 7b48da86d35..f828cdeb258 100755 --- a/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_defconfig +++ b/kernel-3.18/arch/arm64/configs/tb8735ap1_64_ztk_defconfig @@ -36,7 +36,7 @@ CONFIG_ARMV8_DEPRECATED=y CONFIG_SWP_EMULATION=y CONFIG_CP15_BARRIER_EMULATION=y CONFIG_SETEND_EMULATION=y -CONFIG_CMDLINE="console=tty0 console=ttyMT3,921600n1 root=/dev/ram vmalloc=496M slub_max_order=0 slub_debug=O " +CONFIG_CMDLINE="console=tty0 console=ttymxc3,921600n1 root=/dev/ram vmalloc=496M slub_max_order=0 slub_debug=O " # CONFIG_EFI is not set CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE=y CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE_NAMES="mt6735" diff --git a/kernel-3.18/drivers/misc/mediatek/uart/uart.c b/kernel-3.18/drivers/misc/mediatek/uart/uart.c old mode 100644 new mode 100755 index 45616ce9137..8b09254eb77 --- a/kernel-3.18/drivers/misc/mediatek/uart/uart.c +++ b/kernel-3.18/drivers/misc/mediatek/uart/uart.c @@ -765,12 +765,12 @@ static int find_fingerprint(char str[], int *offset) */ static const char * const fingerprint[] = { "console=/dev/null", - "console=ttyMT0", - "console=ttyMT1", - "console=ttyMT2", - "console=ttyMT3", + "console=ttymxc0", + "console=ttymxc1", + "console=ttymxc2", + "console=ttymxc3", #if (UART_NR > 4) - "console=ttyMT4", + "console=ttymxc4", #endif }; int i; @@ -883,7 +883,7 @@ unsigned int mtk_uart_pdn_enable(char *port, int enable) return -1; } - if (find_string(port, "ttyMT", 0) == 0) { + if (find_string(port, "ttymxc", 0) == 0) { MSG_ERR("Format mismatch! str=%s\n", port); return -1; } @@ -915,7 +915,7 @@ unsigned int mtk_uart_freeze_enable(char *port, int enable) return -1; } - if (find_string(port, "ttyMT", 0) == 0) { + if (find_string(port, "ttymxc", 0) == 0) { MSG_ERR("Format mismatch! str=%s\n", port); return -1; } @@ -1025,7 +1025,7 @@ static int __init mtk_uart_console_setup(struct console *co, char *options) /*---------------------------------------------------------------------------*/ static struct uart_driver mtk_uart_drv; static struct console mtk_uart_console = { - .name = "ttyMT", + .name = "ttymxc", #if !defined(CONFIG_MTK_SERIAL_MODEM_TEST) /*don't configure UART4 as console */ .write = mtk_uart_console_write, @@ -2298,7 +2298,7 @@ static struct uart_ops mtk_uart_ops = { static struct uart_driver mtk_uart_drv = { .owner = THIS_MODULE, .driver_name = DRV_NAME, - .dev_name = "ttyMT", + .dev_name = "ttymxc", .major = UART_MAJOR, .minor = UART_MINOR, .nr = UART_NR, @@ -2681,7 +2681,11 @@ static int mtk_uart_init_ports(void) uart->port.fifosize = UART_FIFO_SIZE; uart->port.ops = &mtk_uart_ops; uart->port.flags = UPF_BOOT_AUTOCONF; - uart->port.line = i; + //uart->port.line = i; + if(i == 0) uart->port.line = 1; + else if (i == 1) uart->port.line = 0; + else uart->port.line = i; + uart->port.uartclk = UART_SYSCLK; /* pll_for_uart = mt6575_get_bus_freq(); */ /* uart->port.uartclk = mt6575_get_bus_freq()*1000/4; */ diff --git a/kernel-3.18/kernel/printk/printk.c b/kernel-3.18/kernel/printk/printk.c index f73e332925d..6702c656142 100755 --- a/kernel-3.18/kernel/printk/printk.c +++ b/kernel-3.18/kernel/printk/printk.c @@ -1704,7 +1704,7 @@ static void call_console_drivers(int level, const char *text, size_t len) tmp2 = local_clock(); differ = tmp2 - tmp1; - if (!strcmp(con->name, "ttyMT")) { + if (!strcmp(con->name, "ttymxc")) { len_1 += len; accum_t1 += differ; } else if (!strcmp(con->name, "pstore")) { diff --git a/system/core/rootdir/ueventd.rc b/system/core/rootdir/ueventd.rc index 231c9c11728..6cc8549c5d1 100755 --- a/system/core/rootdir/ueventd.rc +++ b/system/core/rootdir/ueventd.rc @@ -134,4 +134,8 @@ subsystem sound # DVB API device nodes /dev/dvb* 0660 root system -/dev/sglctl 0777 root system \ No newline at end of file +/dev/sglctl 0777 root system +/dev/ttymxc0 0666 root system +/dev/ttymxc1 0666 root system +/dev/ttymxc2 0666 root system +/dev/ttymxc3 0666 root system \ No newline at end of file diff --git a/vendor/mediatek/kernel_modules/connectivity/common/common_detect/mtk_wcn_stub_alps.c b/vendor/mediatek/kernel_modules/connectivity/common/common_detect/mtk_wcn_stub_alps.c old mode 100644 new mode 100755 index b3e6b7c4528..5984d5949a4 --- a/vendor/mediatek/kernel_modules/connectivity/common/common_detect/mtk_wcn_stub_alps.c +++ b/vendor/mediatek/kernel_modules/connectivity/common/common_detect/mtk_wcn_stub_alps.c @@ -85,7 +85,7 @@ int gConnectivityChipId = -1; * current used uart port name, default is "ttyMT2", * will be changed when wmt driver init */ -char *wmt_uart_port_desc = "ttyMT2"; +char *wmt_uart_port_desc = "ttymxc2"; EXPORT_SYMBOL(wmt_uart_port_desc); #ifdef MTK_WCN_REMOVE_KERNEL_MODULE diff --git a/vendor/mediatek/proprietary/bootable/bootloader/lk/app/mt_boot/mt_boot.c b/vendor/mediatek/proprietary/bootable/bootloader/lk/app/mt_boot/mt_boot.c index 55e5b07f6f2..59ee166483b 100755 --- a/vendor/mediatek/proprietary/bootable/bootloader/lk/app/mt_boot/mt_boot.c +++ b/vendor/mediatek/proprietary/bootable/bootloader/lk/app/mt_boot/mt_boot.c @@ -1538,9 +1538,9 @@ int boot_linux_fdt(void *kernel, unsigned *tags, case BUILD_TYPE_USER: if ((g_boot_mode == META_BOOT) && is_meta_log_disable && (is_meta_log_disable() == 0)) - cmdline_append("printk.disable_uart=0"); + cmdline_append("printk.disable_uart=1"); else - cmdline_append("printk.disable_uart=0"); + cmdline_append("printk.disable_uart=1"); break; case BUILD_TYPE_USERDEBUG: @@ -1887,7 +1887,7 @@ void boot_linux(void *kernel, unsigned *tags, if (!has_set_p2u) { switch (eBuildType) { case BUILD_TYPE_USER: - cmdline_append("printk.disable_uart=0"); + cmdline_append("printk.disable_uart=1"); break; case BUILD_TYPE_USERDEBUG: diff --git a/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/include/platform/mt_reg_base.h b/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/include/platform/mt_reg_base.h old mode 100644 new mode 100755 index 907aef6275d..eb926aad8a0 --- a/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/include/platform/mt_reg_base.h +++ b/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/include/platform/mt_reg_base.h @@ -679,9 +679,9 @@ #endif #ifdef MACH_FPGA -#define COMMANDLINE_TO_KERNEL "console=tty0 console=ttyMT0,921600n1 " CMDLINE_ROOT " androidboot.hardware=mt6735 firmware_class.path=/vendor/firmware" +#define COMMANDLINE_TO_KERNEL "console=tty0 console=ttymxc0,921600n1 " CMDLINE_ROOT " androidboot.hardware=mt6735 firmware_class.path=/vendor/firmware" #else -#define COMMANDLINE_TO_KERNEL "console=tty0 console=ttyMT3,921600n1 " CMDLINE_ROOT " vmalloc=496M androidboot.hardware=mt6735 slub_max_order=0 slub_debug=OFZPU firmware_class.path=/vendor/firmware" +#define COMMANDLINE_TO_KERNEL "console=tty0 console=ttymxc3,921600n1 " CMDLINE_ROOT " vmalloc=496M androidboot.hardware=mt6735 slub_max_order=0 slub_debug=OFZPU firmware_class.path=/vendor/firmware" #endif #define CFG_FACTORY_NAME "factory.img" diff --git a/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/uart.c b/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/uart.c old mode 100644 new mode 100755 index d3fa9eb0572..011485c8a15 --- a/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/uart.c +++ b/vendor/mediatek/proprietary/bootable/bootloader/lk/platform/mt6735/uart.c @@ -163,16 +163,16 @@ static void change_uart_port(char * cmd_line, char new_val) len = strlen(cmd_line); ptr = cmd_line; - i = strlen("ttyMT"); + i = strlen("ttymxc"); if(len < i) return; len = len-i; for(i=0; i<=len; i++) { - if(strncmp(ptr, "ttyMT", 5)==0) + if(strncmp(ptr, "ttymxc", 6)==0) { - ptr[5] = new_val; // Find and modify + ptr[6] = new_val; // Find and modify break; } ptr++; diff --git a/vendor/mediatek/proprietary/bootable/bootloader/preloader/custom/tb8735ap1_64_ztk/cust_bldr.mak b/vendor/mediatek/proprietary/bootable/bootloader/preloader/custom/tb8735ap1_64_ztk/cust_bldr.mak old mode 100644 new mode 100755 index fef16366f3d..002d02bf625 --- a/vendor/mediatek/proprietary/bootable/bootloader/preloader/custom/tb8735ap1_64_ztk/cust_bldr.mak +++ b/vendor/mediatek/proprietary/bootable/bootloader/preloader/custom/tb8735ap1_64_ztk/cust_bldr.mak @@ -7,7 +7,7 @@ CFG_BOOT_DEV :=BOOTDEV_SDMMC else CFG_BOOT_DEV :=BOOTDEV_NAND endif -CFG_UART_LOG :=UART1 +CFG_UART_LOG :=UART2 CFG_UART_META :=UART1 CFG_TEE_SUPPORT = 0 CFG_TRUSTONIC_TEE_SUPPORT = 0 diff --git a/vendor/mediatek/proprietary/bootable/bootloader/preloader/platform/mt6735/default.mak b/vendor/mediatek/proprietary/bootable/bootloader/preloader/platform/mt6735/default.mak old mode 100644 new mode 100755 index 438fa9a4d9d..2e77d7fcb3b --- a/vendor/mediatek/proprietary/bootable/bootloader/preloader/platform/mt6735/default.mak +++ b/vendor/mediatek/proprietary/bootable/bootloader/preloader/platform/mt6735/default.mak @@ -31,7 +31,7 @@ CFG_USB_TOOL_HANDSHAKE :=1 CFG_USB_DOWNLOAD :=1 CFG_LOG_BAUDRATE :=921600 CFG_META_BAUDRATE :=115200 -CFG_UART_LOG :=UART1 +CFG_UART_LOG :=UART2 CFG_UART_META :=UART1 #only enable in eng mode diff --git a/vendor/mediatek/proprietary/factory/inc/utils.h b/vendor/mediatek/proprietary/factory/inc/utils.h index 2fbf462752b..386ecfff6bf 100755 --- a/vendor/mediatek/proprietary/factory/inc/utils.h +++ b/vendor/mediatek/proprietary/factory/inc/utils.h @@ -48,7 +48,7 @@ extern "C" { #define MODEM_MAX_NUM 2 -#define CCCI_MODEM_MT6252 "/dev/ttyMT0" +#define CCCI_MODEM_MT6252 "/dev/ttymxc0" #define CCCI_MODEM_MT8135 "/dev/ttyUSB1" /*signaltest*/ diff --git a/vendor/mediatek/proprietary/factory/src/test/ftm_sim.c b/vendor/mediatek/proprietary/factory/src/test/ftm_sim.c old mode 100644 new mode 100755 index a2d17931c12..46c833a370d --- a/vendor/mediatek/proprietary/factory/src/test/ftm_sim.c +++ b/vendor/mediatek/proprietary/factory/src/test/ftm_sim.c @@ -167,7 +167,7 @@ char dev_node_data_2[32] = {0}; #define EFIFO_IOC_RESET_BUFFER _IO(CCCI_IOC_MAGIC, 203) #define DEVICE_NAME_3 "/dev/ttyUSB1" -#define DEVICE_NAME_EXTRA "/dev/ttyMT0" +#define DEVICE_NAME_EXTRA "/dev/ttymxc0" int fd_at = -1; int fd_atdt = -1; #define SIM_SWITCH_MODE_CDMA 0x010001 diff --git a/vendor/mediatek/proprietary/factory/src/util/uart_op.cpp b/vendor/mediatek/proprietary/factory/src/util/uart_op.cpp old mode 100644 new mode 100755 index a9377a4d117..9fd19ca84ff --- a/vendor/mediatek/proprietary/factory/src/util/uart_op.cpp +++ b/vendor/mediatek/proprietary/factory/src/util/uart_op.cpp @@ -251,7 +251,7 @@ int open_uart_port(int uart_id, int baudrate, int length, char parity_c, int sto return fd; //sprintf(dev, "/dev/ttyMT%d", (int)(uart_id-1) ); - snprintf(dev,sizeof(dev),"%s%d","/dev/ttyMT", (int)(uart_id-1)); + snprintf(dev,sizeof(dev),"%s%d","/dev/ttymxc", (int)(uart_id-1)); /* Open device now */ fd = open(dev, O_RDWR|O_NOCTTY|O_NONBLOCK); diff --git a/vendor/mediatek/proprietary/hardware/connectivity/bluetooth/driver/mt66xx/pure/combo/bt_relayer.c b/vendor/mediatek/proprietary/hardware/connectivity/bluetooth/driver/mt66xx/pure/combo/bt_relayer.c old mode 100644 new mode 100755 index 7968b683b1b..b73105175f5 --- a/vendor/mediatek/proprietary/hardware/connectivity/bluetooth/driver/mt66xx/pure/combo/bt_relayer.c +++ b/vendor/mediatek/proprietary/hardware/connectivity/bluetooth/driver/mt66xx/pure/combo/bt_relayer.c @@ -117,7 +117,7 @@ static int init_serial(int port, int speed) char usb_prop[PROPERTY_VALUE_MAX]; if (port < 4) { /* serial port UART */ - sprintf(dev, "/dev/ttyMT%d", port); + sprintf(dev, "/dev/ttymxc%d", port); } else { /* serial port USB */ sprintf(dev, "/dev/ttyGS2"); diff --git a/vendor/mediatek/proprietary/hardware/connectivity/combo_tool/src/stp_uart_launcher.c b/vendor/mediatek/proprietary/hardware/connectivity/combo_tool/src/stp_uart_launcher.c old mode 100644 new mode 100755 index 279d751da66..461f8c591fa --- a/vendor/mediatek/proprietary/hardware/connectivity/combo_tool/src/stp_uart_launcher.c +++ b/vendor/mediatek/proprietary/hardware/connectivity/combo_tool/src/stp_uart_launcher.c @@ -59,7 +59,7 @@ #endif #define HCIUARTSETPROTO _IOW('U', 200, int) #define CUST_COMBO_WMT_DEV "/dev/stpwmt" -#define CUST_COMBO_STP_DEV "/dev/ttyMT2" +#define CUST_COMBO_STP_DEV "/dev/ttymxc2" #define CUST_COMBO_PATCH_PATH "/vendor/firmware" #define CUST_COMBO_CFG_FILE "/system/vendor/firmware/WMT.cfg" @@ -1125,7 +1125,7 @@ static void launcher_set_uart_port_name(char *stp_dev) { } if (!uart_name) { - uart_name = "ttyMT2"; + uart_name = "ttymxc2"; ALOGI("use default uart %s\n", uart_name); } diff --git a/vendor/mediatek/proprietary/hardware/connectivity/gps/gps.rc b/vendor/mediatek/proprietary/hardware/connectivity/gps/gps.rc old mode 100644 new mode 100755 index c2850d8cca3..2f9f1ff5785 --- a/vendor/mediatek/proprietary/hardware/connectivity/gps/gps.rc +++ b/vendor/mediatek/proprietary/hardware/connectivity/gps/gps.rc @@ -9,8 +9,8 @@ chown gps gps /sys/class/gpsdrv/gps/status #/dev/ttyMT1 for GPS 3337 usage - chmod 0660 /dev/ttyMT1 - chown system system /dev/ttyMT1 + chmod 0660 /dev/ttymxc1 + chown system system /dev/ttymxc1 # GPS EMI chmod 666 /dev/gps_emi diff --git a/vendor/mediatek/proprietary/hardware/connectivity/gps/gps_hal/src/gpsinf3337.c b/vendor/mediatek/proprietary/hardware/connectivity/gps/gps_hal/src/gpsinf3337.c old mode 100644 new mode 100755 index 6d38833e916..e0365fc7edc --- a/vendor/mediatek/proprietary/hardware/connectivity/gps/gps_hal/src/gpsinf3337.c +++ b/vendor/mediatek/proprietary/hardware/connectivity/gps/gps_hal/src/gpsinf3337.c @@ -77,7 +77,7 @@ /* the name of the controlled socket */ #define GPS_POWER_NAME "/dev/gps" -#define GPS_TTY_NAME "/dev/ttyMT1" +#define GPS_TTY_NAME "/dev/ttymxc1" #define MNLD_HAL2GPS "/dev/mt3337_gpsonly" #define MNL_CONFIG_STATUS "persist.radio.mnl.prop" diff --git a/vendor/mediatek/proprietary/hardware/meta/common/inc/MetaPub.h b/vendor/mediatek/proprietary/hardware/meta/common/inc/MetaPub.h old mode 100644 new mode 100755 index fd29f016d6c..7d7fa8fe0a4 --- a/vendor/mediatek/proprietary/hardware/meta/common/inc/MetaPub.h +++ b/vendor/mediatek/proprietary/hardware/meta/common/inc/MetaPub.h @@ -131,10 +131,10 @@ Mux Header Format #define MBLOG_PULL_STATUS "debug.MB.packed" -#define UART1_PATH "/dev/ttyMT0" -#define UART2_PATH "/dev/ttyMT1" -#define UART3_PATH "/dev/ttyMT2" -#define UART4_PATH "/dev/ttyMT3" +#define UART1_PATH "/dev/ttymxc0" +#define UART2_PATH "/dev/ttymxc1" +#define UART3_PATH "/dev/ttymxc2" +#define UART4_PATH "/dev/ttymxc3" -- 2.29.0
