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1212 lines
41 KiB
1212 lines
41 KiB
#!/usr/bin/env perl |
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# SPDX-License-Identifier: GPL-2.0-only |
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|
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# Copyright 2016 by Frank Rowand |
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# Copyright 2016 by Gaurav Minocha |
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# |
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|
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use strict 'refs'; |
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use strict subs; |
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|
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use Getopt::Long; |
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|
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$VUFX = "160610a"; |
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|
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$script_name = $0; |
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$script_name =~ s|^.*/||; |
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|
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# ----- constants for print_flags() |
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|
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# Position in string $pr_flags. Range of 0..($num_pr_flags - 1). |
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$pr_flag_pos_mcompatible = 0; |
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$pr_flag_pos_driver = 1; |
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$pr_flag_pos_mdriver = 2; |
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$pr_flag_pos_config = 3; |
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$pr_flag_pos_mconfig = 4; |
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$pr_flag_pos_node_not_enabled = 5; |
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$pr_flag_pos_white_list = 6; |
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$pr_flag_pos_hard_coded = 7; |
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$pr_flag_pos_config_hard_coded = 8; |
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$pr_flag_pos_config_none = 9; |
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$pr_flag_pos_config_m = 10; |
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$pr_flag_pos_config_y = 11; |
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$pr_flag_pos_config_test_fail = 12; |
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|
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$num_pr_flags = $pr_flag_pos_config_test_fail + 1; |
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|
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# flags in @pr_flag_value must be unique values to allow simple regular |
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# expessions to work for --include_flags and --exclude_flags. |
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# Convention: use upper case letters for potential issues or problems. |
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|
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@pr_flag_value = ('M', 'd', 'D', 'c', 'C', 'E', 'W', 'H', 'x', 'n', 'm', 'y', 'F'); |
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|
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@pr_flag_help = ( |
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"multiple compatibles found for this node", |
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"driver found for this compatible", |
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"multiple drivers found for this compatible", |
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"kernel config found for this driver", |
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"multiple config options found for this driver", |
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"node is not enabled", |
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"compatible is white listed", |
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"matching driver and/or kernel config is hard coded", |
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"kernel config hard coded in Makefile", |
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"one or more kernel config file options is not set", |
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"one or more kernel config file options is set to 'm'", |
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"one or more kernel config file options is set to 'y'", |
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"one of more kernel config file options fails to have correct value" |
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); |
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# ----- |
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|
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%driver_config = (); # driver config array, indexed by driver source file |
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%driver_count = (); # driver_cnt, indexed by compatible |
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%compat_driver = (); # compatible driver array, indexed by compatible |
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%existing_config = (); # existing config symbols present in given config file |
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# expected values are: "y", "m", a decimal number, a |
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# hex number, or a string |
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|
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# ----- magic compatibles, do not have a driver |
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# |
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# Will not search for drivers for these compatibles. |
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|
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%compat_white_list = ( |
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'none' => '1', |
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'pci' => '1', |
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'simple-bus' => '1', |
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); |
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# Will not search for drivers for these compatibles. |
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# |
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# These compatibles have a very large number of false positives. |
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# |
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# 'hardcoded_no_driver' is a magic value. Other code knows this |
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# magic value. Do not use 'no_driver' here! |
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# |
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# Revisit each 'hardcoded_no_driver' to see how the compatible |
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# is used. Are there drivers that can be provided? |
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%driver_hard_code_list = ( |
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'cache' => ['hardcoded_no_driver'], |
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'eeprom' => ['hardcoded_no_driver'], |
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'gpio' => ['hardcoded_no_driver'], |
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'gpio-keys' => ['drivers/input/keyboard/gpio_keys.c'], |
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'i2c-gpio' => ['drivers/i2c/busses/i2c-gpio.c'], |
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'isa' => ['arch/mips/mti-malta/malta-dt.c', |
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'arch/x86/kernel/devicetree.c'], |
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'led' => ['hardcoded_no_driver'], |
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'm25p32' => ['hardcoded_no_driver'], |
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'm25p64' => ['hardcoded_no_driver'], |
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'm25p80' => ['hardcoded_no_driver'], |
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'mtd-ram' => ['drivers/mtd/maps/physmap_of.c'], |
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'pwm-backlight' => ['drivers/video/backlight/pwm_bl.c'], |
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'spidev' => ['hardcoded_no_driver'], |
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'syscon' => ['drivers/mfd/syscon.c'], |
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'tlv320aic23' => ['hardcoded_no_driver'], |
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'wm8731' => ['hardcoded_no_driver'], |
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); |
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# Use these config options instead of searching makefiles |
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%driver_config_hard_code_list = ( |
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|
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# this one needed even if %driver_hard_code_list is empty |
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'no_driver' => ['no_config'], |
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'hardcoded_no_driver' => ['no_config'], |
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# drivers/usb/host/ehci-ppc-of.c |
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# drivers/usb/host/ehci-xilinx-of.c |
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# are included from: |
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# drivers/usb/host/ehci-hcd.c |
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# thus the search of Makefile for the included .c files is incorrect |
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# ehci-hcd.c wraps the includes with ifdef CONFIG_USB_EHCI_HCD_..._OF |
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# |
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# similar model for ohci-hcd.c (but no ohci-xilinx-of.c) |
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# |
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# similarly, uhci-hcd.c includes uhci-platform.c |
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'drivers/usb/host/ehci-ppc-of.c' => ['CONFIG_USB_EHCI_HCD', |
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'CONFIG_USB_EHCI_HCD_PPC_OF'], |
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'drivers/usb/host/ohci-ppc-of.c' => ['CONFIG_USB_OHCI_HCD', |
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'CONFIG_USB_OHCI_HCD_PPC_OF'], |
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'drivers/usb/host/ehci-xilinx-of.c' => ['CONFIG_USB_EHCI_HCD', |
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'CONFIG_USB_EHCI_HCD_XILINX'], |
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'drivers/usb/host/uhci-platform.c' => ['CONFIG_USB_UHCI_HCD', |
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'CONFIG_USB_UHCI_PLATFORM'], |
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# scan_makefile will find only one of these config options: |
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# ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),) |
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'arch/arm/mach-imx/platsmp.c' => ['CONFIG_SOC_IMX6 && CONFIG_SMP', |
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'CONFIG_SOC_LS1021A && CONFIG_SMP'], |
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); |
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# 'virt/kvm/arm/.*' are controlled by makefiles in other directories, |
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# using relative paths, such as 'KVM := ../../../virt/kvm'. Do not |
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# add complexity to find_kconfig() to deal with this. There is a long |
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# term intent to change the kvm related makefiles to the normal kernel |
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# style. After that is done, this entry can be removed from the |
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# black_list_driver. |
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@black_list_driver = ( |
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# kvm no longer a problem after commit 503a62862e8f in 4.7-rc1 |
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# 'virt/kvm/arm/.*', |
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); |
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sub usage() |
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{ |
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print |
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" |
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Usage: $script_name [options] device-tree... |
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device_tree is: dts_file | dtb_file | proc_device-tree |
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Valid options: |
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-c FILE Read kernel config options from FILE |
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--config FILE synonym for 'c' |
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--config-format config file friendly output format |
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--exclude-flag FLAG exclude entries with a matching flag |
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-h Display this message and exit |
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--help synonym for 'h' |
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--black-list-driver use driver black list |
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--white-list-config use config white list |
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--white-list-driver use driver white list |
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--include-flag FLAG include only entries with a matching flag |
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--include-suspect include only entries with an uppercase flag |
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--short-name do not show the path portion of the node name |
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--show-lists report of white and black lists |
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--version Display program version and exit |
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Report driver source files that match the compatibles in the device |
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tree file and the kernel config options that enable the driver source |
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files. |
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This program must be run in the root directory of a Linux kernel |
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source tree. |
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The default format is a report that is intended to be easily human |
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scannable. |
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An alternate format can be selected by --config-format. This will |
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create output that can easily be edited to create a fragment that can |
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be appended to the existing kernel config file. Each entry consists of |
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multiple lines. The first line reports flags, the node path, compatible |
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value, driver file matching the compatible, configuration options, and |
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current values of the configuration options. For each configuration |
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option, the following lines report the current value and the value that |
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is required for the driver file to be included in the kernel. |
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If a large number of drivers or config options is listed for a node, |
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and the '$pr_flag_value[$pr_flag_pos_hard_coded]' flag is set consider using --white-list-config and/or |
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--white-list-driver. If the white list option suppresses the correct |
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entry please report that as a bug. |
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CAUTION: |
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This program uses heuristics to guess which driver(s) support each |
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compatible string and which config option(s) enables the driver(s). |
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Do not believe that the reported information is fully correct. |
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This program is intended to aid the process of determining the |
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proper kernel configuration for a device tree, but this is not |
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a fully automated process -- human involvement may still be |
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required! |
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The driver match heuristic used is to search for source files |
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containing the compatible string enclosed in quotes. |
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This program might not be able to find all drivers matching a |
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compatible string. |
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Some makefiles are overly clever. This program was not made |
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complex enough to handle them. If no config option is listed |
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for a driver, look at the makefile for the driver source file. |
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Even if a config option is listed for a driver, some other |
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available config options may not be listed. |
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FLAG values: |
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"; |
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for ($k = 0; $k < $num_pr_flags; $k++) { |
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printf " %s %s\n", $pr_flag_value[$k], $pr_flag_help[$k]; |
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} |
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print |
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" |
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Upper case letters indicate potential issues or problems. |
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The flag: |
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"; |
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$k = $pr_flag_pos_hard_coded; |
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printf " %s %s\n", $pr_flag_value[$k], $pr_flag_help[$k]; |
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print |
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" |
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will be set if the config or driver is in the white lists, even if |
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--white-list-config and --white-list-driver are not specified. |
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This is a hint that 1) many of these reported lines are likely to |
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be incorrect, and 2) using those options will reduce the number of |
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drivers and/or config options reported. |
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--white-list-config and --white-list-driver may not be accurate if this |
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program is not well maintained. Use them with appropriate skepticism. |
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Use the --show-lists option to report the values in the list. |
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Return value: |
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0 if no error |
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1 error processing command line |
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2 unable to open or read kernel config file |
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3 unable to open or process input device tree file(s) |
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EXAMPLES: |
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dt_to_config arch/arm/boot/dts/my_dts_file.dts |
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Basic report. |
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dt_to_config \\ |
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--config \${KBUILD_OUTPUT}/.config \\ |
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arch/\${ARCH}/boot/dts/my_dts_file.dts |
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Full report, with config file issues noted. |
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dt_to_config --include-suspect \\ |
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--config \${KBUILD_OUTPUT}/.config \\ |
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arch/\${ARCH}/boot/dts/my_dts_file.dts |
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Report of node / compatible string / driver tuples that should |
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be further investigated. A node may have multiple compatible |
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strings. A compatible string may be matched by multiple drivers. |
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A driver may have config file issues noted. The compatible string |
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and/or driver may be in the white lists. |
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dt_to_config --include-suspect --config-format \\ |
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--config ${KBUILD_OUTPUT}/.config \\ |
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arch/\${ARCH}/boot/dts/my_dts_file.dts |
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Report of node / compatible string / driver tuples that should |
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be further investigated. The report can be edited to uncomment |
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the config options to select the desired tuple for a given node. |
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A node may have multiple compatible strings. A compatible string |
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may be matched by multiple drivers. A driver may have config file |
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issues noted. The compatible string and/or driver may be in the |
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white lists. |
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"; |
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} |
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sub set_flag() |
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{ |
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# pr_flags_ref is a reference to $pr_flags |
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my $pr_flags_ref = shift; |
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my $pos = shift; |
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substr $$pr_flags_ref, $pos, 1, $pr_flag_value[$pos]; |
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return $pr_flags; |
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} |
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sub print_flags() |
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{ |
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# return 1 if anything printed, else 0 |
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# some fields of pn_arg_ref might not be used in this function, but |
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# extract all of them anyway. |
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my $pn_arg_ref = shift; |
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my $compat = $pn_arg_ref->{compat}; |
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my $compatible_cnt = $pn_arg_ref->{compatible_cnt}; |
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my $config = $pn_arg_ref->{config}; |
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my $config_cnt = $pn_arg_ref->{config_cnt}; |
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my $driver = $pn_arg_ref->{driver}; |
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my $driver_cnt = $pn_arg_ref->{driver_cnt}; |
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my $full_node = $pn_arg_ref->{full_node}; |
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my $node = $pn_arg_ref->{node}; |
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my $node_enabled = $pn_arg_ref->{node_enabled}; |
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my $white_list = $pn_arg_ref->{white_list}; |
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my $pr_flags = '-' x $num_pr_flags; |
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# ----- set flags in $pr_flags |
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if ($compatible_cnt > 1) { |
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&set_flag(\$pr_flags, $pr_flag_pos_mcompatible); |
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} |
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if ($config_cnt > 1) { |
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&set_flag(\$pr_flags, $pr_flag_pos_mconfig); |
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} |
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if ($driver_cnt >= 1) { |
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&set_flag(\$pr_flags, $pr_flag_pos_driver); |
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} |
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if ($driver_cnt > 1) { |
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&set_flag(\$pr_flags, $pr_flag_pos_mdriver); |
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} |
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# These strings are the same way the linux kernel tests. |
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# The ePapr lists of values is slightly different. |
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if (!( |
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($node_enabled eq "") || |
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($node_enabled eq "ok") || |
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($node_enabled eq "okay") |
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)) { |
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&set_flag(\$pr_flags, $pr_flag_pos_node_not_enabled); |
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} |
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if ($white_list) { |
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&set_flag(\$pr_flags, $pr_flag_pos_white_list); |
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} |
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if (exists($driver_hard_code_list{$compat}) || |
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(exists($driver_config_hard_code_list{$driver}) && |
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($driver ne "no_driver"))) { |
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&set_flag(\$pr_flags, $pr_flag_pos_hard_coded); |
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} |
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my @configs = split(' && ', $config); |
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for $configs (@configs) { |
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$not = $configs =~ /^!/; |
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$configs =~ s/^!//; |
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if (($configs ne "no_config") && ($configs ne "no_makefile")) { |
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&set_flag(\$pr_flags, $pr_flag_pos_config); |
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} |
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if (($config_cnt >= 1) && |
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($configs !~ /CONFIG_/) && |
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(($configs ne "no_config") && ($configs ne "no_makefile"))) { |
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&set_flag(\$pr_flags, $pr_flag_pos_config_hard_coded); |
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} |
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my $existing_config = $existing_config{$configs}; |
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if ($existing_config eq "m") { |
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&set_flag(\$pr_flags, $pr_flag_pos_config_m); |
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# Possible fail, depends on whether built in or |
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# module is desired. |
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&set_flag(\$pr_flags, $pr_flag_pos_config_test_fail); |
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} elsif ($existing_config eq "y") { |
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&set_flag(\$pr_flags, $pr_flag_pos_config_y); |
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if ($not) { |
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&set_flag(\$pr_flags, $pr_flag_pos_config_test_fail); |
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} |
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} elsif (($config_file) && ($configs =~ /CONFIG_/)) { |
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&set_flag(\$pr_flags, $pr_flag_pos_config_none); |
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if (!$not) { |
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&set_flag(\$pr_flags, $pr_flag_pos_config_test_fail); |
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} |
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} |
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} |
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# ----- include / exclude filters |
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|
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if ($include_flag_pattern && ($pr_flags !~ m/$include_flag_pattern/)) { |
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return 0; |
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} |
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if ($exclude_flag_pattern && ($pr_flags =~ m/$exclude_flag_pattern/)) { |
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return 0; |
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} |
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if ($config_format) { |
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print "# "; |
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} |
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print "$pr_flags : "; |
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return 1; |
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} |
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sub print_node() |
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{ |
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# return number of lines printed |
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|
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# some fields of pn_arg_ref might not be used in this function, but |
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# extract all of them anyway. |
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my $pn_arg_ref = shift; |
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|
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my $compat = $pn_arg_ref->{compat}; |
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my $compatible_cnt = $pn_arg_ref->{compatible_cnt}; |
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my $config = $pn_arg_ref->{config}; |
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my $config_cnt = $pn_arg_ref->{config_cnt}; |
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my $driver = $pn_arg_ref->{driver}; |
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my $driver_cnt = $pn_arg_ref->{driver_cnt}; |
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my $full_node = $pn_arg_ref->{full_node}; |
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my $node = $pn_arg_ref->{node}; |
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my $node_enabled = $pn_arg_ref->{node_enabled}; |
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my $white_list = $pn_arg_ref->{white_list}; |
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my $separator; |
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|
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if (! &print_flags($pn_arg_ref)) { |
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return 0; |
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} |
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|
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|
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if ($short_name) { |
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print "$node"; |
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} else { |
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print "$full_node"; |
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} |
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print " : $compat : $driver : $config : "; |
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|
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my @configs = split(' && ', $config); |
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|
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if ($config_file) { |
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for $configs (@configs) { |
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$configs =~ s/^!//; |
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my $existing_config = $existing_config{$configs}; |
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if (!$existing_config) { |
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# check for /-m/, /-y/, or /-objs/ |
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if ($configs !~ /CONFIG_/) { |
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$existing_config = "x"; |
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}; |
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}; |
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if ($existing_config) { |
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print "$separator", "$existing_config"; |
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$separator = ", "; |
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} else { |
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print "$separator", "n"; |
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$separator = ", "; |
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} |
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} |
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} else { |
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print "none"; |
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} |
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|
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print "\n"; |
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|
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if ($config_format) { |
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for $configs (@configs) { |
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$not = $configs =~ /^!/; |
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$configs =~ s/^!//; |
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my $existing_config = $existing_config{$configs}; |
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|
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if ($not) { |
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if ($configs !~ /CONFIG_/) { |
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print "# $configs\n"; |
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} elsif ($existing_config eq "m") { |
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print "# $configs is m\n"; |
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print "# $configs=n\n"; |
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} elsif ($existing_config eq "y") { |
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print "# $configs is set\n"; |
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print "# $configs=n\n"; |
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} else { |
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print "# $configs is not set\n"; |
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print "# $configs=n\n"; |
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} |
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|
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} else { |
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if ($configs !~ /CONFIG_/) { |
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print "# $configs\n"; |
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} elsif ($existing_config eq "m") { |
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print "# $configs is m\n"; |
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print "# $configs=y\n"; |
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} elsif ($existing_config eq "y") { |
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print "# $configs is set\n"; |
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print "# $configs=y\n"; |
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} else { |
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print "# $configs is not set\n"; |
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print "# $configs=y\n"; |
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} |
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} |
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} |
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} |
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|
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return 1; |
|
} |
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|
|
|
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sub scan_makefile |
|
{ |
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my $pn_arg_ref = shift; |
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my $driver = shift; |
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|
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# ----- Find Kconfig symbols that enable driver |
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|
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my ($dir, $base) = $driver =~ m{(.*)/(.*).c}; |
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|
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my $makefile = $dir . "/Makefile"; |
|
if (! -r $makefile) { |
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$makefile = $dir . "/Kbuild"; |
|
} |
|
if (! -r $makefile) { |
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my $config; |
|
|
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$config = 'no_makefile'; |
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push @{ $driver_config{$driver} }, $config; |
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return; |
|
} |
|
|
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if (!open(MAKEFILE_FILE, "<", "$makefile")) { |
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return; |
|
} |
|
|
|
my $line; |
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my @config; |
|
my @if_config; |
|
my @make_var; |
|
|
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NEXT_LINE: |
|
while ($next_line = <MAKEFILE_FILE>) { |
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my $config; |
|
my $if_config; |
|
my $ifdef; |
|
my $ifeq; |
|
my $ifndef; |
|
my $ifneq; |
|
my $ifdef_config; |
|
my $ifeq_config; |
|
my $ifndef_config; |
|
my $ifneq_config; |
|
|
|
chomp($next_line); |
|
$line = $line . $next_line; |
|
if ($next_line =~ /\\$/) { |
|
$line =~ s/\\$/ /; |
|
next NEXT_LINE; |
|
} |
|
if ($line =~ /^\s*#/) { |
|
$line = ""; |
|
next NEXT_LINE; |
|
} |
|
|
|
# ----- condition ... else ... endif |
|
|
|
if ($line =~ /^([ ]\s*|)else\b/) { |
|
$if_config = "!" . pop @if_config; |
|
$if_config =~ s/^!!//; |
|
push @if_config, $if_config; |
|
$line =~ s/^([ ]\s*|)else\b//; |
|
} |
|
|
|
($null, $ifeq_config, $ifeq_config_val ) = $line =~ /^([ ]\s*|)ifeq\b.*\b(CONFIG_[A-Za-z0-9_]*)(.*)/; |
|
($null, $ifneq_config, $ifneq_config_val) = $line =~ /^([ ]\s*|)ifneq\b.*\b(CONFIG_[A-Za-z0-9_]*)(.*)/; |
|
($null, $ifdef_config) = $line =~ /^([ ]\s*|)ifdef\b.*\b(CONFIG_[A-Za-z0-9_]*)/; |
|
($null, $ifndef_config) = $line =~ /^([ ]\s*|)ifndef\b.*\b(CONFIG_[A-Za-z0-9_]*)/; |
|
|
|
($null, $ifeq) = $line =~ /^([ ]\s*|)ifeq\b\s*(.*)/; |
|
($null, $ifneq) = $line =~ /^([ ]\s*|)ifneq\b\s*(.*)/; |
|
($null, $ifdef) = $line =~ /^([ ]\s*|)ifdef\b\s*(.*)/; |
|
($null, $ifndef) = $line =~ /^([ ]\s*|)ifndef\b\s*(.*)/; |
|
|
|
# Order of tests is important. Prefer "CONFIG_*" regex match over |
|
# less specific regex match. |
|
if ($ifdef_config) { |
|
$if_config = $ifdef_config; |
|
} elsif ($ifeq_config) { |
|
if ($ifeq_config_val =~ /y/) { |
|
$if_config = $ifeq_config; |
|
} else { |
|
$if_config = "!" . $ifeq_config; |
|
} |
|
} elsif ($ifndef_config) { |
|
$if_config = "!" . $ifndef_config; |
|
} elsif ($ifneq_config) { |
|
if ($ifneq_config_val =~ /y/) { |
|
$if_config = "!" . $ifneq_config; |
|
} else { |
|
$if_config = $ifneq_config; |
|
} |
|
} elsif ($ifdef) { |
|
$if_config = $ifdef; |
|
} elsif ($ifeq) { |
|
$if_config = $ifeq; |
|
} elsif ($ifndef) { |
|
$if_config = "!" . $ifndef; |
|
} elsif ($ifneq) { |
|
$if_config = "!" . $ifneq; |
|
} else { |
|
$if_config = ""; |
|
} |
|
$if_config =~ s/^!!//; |
|
|
|
if ($if_config) { |
|
push @if_config, $if_config; |
|
$line = ""; |
|
next NEXT_LINE; |
|
} |
|
|
|
if ($line =~ /^([ ]\s*|)endif\b/) { |
|
pop @if_config; |
|
$line = ""; |
|
next NEXT_LINE; |
|
} |
|
|
|
# ----- simple CONFIG_* = *.[co] or xxx [+:?]*= *.[co] |
|
# Most makefiles select on *.o, but |
|
# arch/powerpc/boot/Makefile selects on *.c |
|
|
|
($config) = $line =~ /(CONFIG_[A-Za-z0-9_]+).*\b$base.[co]\b/; |
|
|
|
# ----- match a make variable instead of *.[co] |
|
# Recursively expanded variables are not handled. |
|
|
|
if (!$config) { |
|
my $make_var; |
|
($make_var) = $line =~ /\s*(\S+?)\s*[+:\?]*=.*\b$base.[co]\b/; |
|
if ($make_var) { |
|
if ($make_var =~ /[a-zA-Z0-9]+-[ym]/) { |
|
$config = $make_var; |
|
} elsif ($make_var =~ /[a-zA-Z0-9]+-objs/) { |
|
$config = $make_var; |
|
} else { |
|
push @make_var, $make_var; |
|
} |
|
} |
|
} |
|
|
|
if (!$config) { |
|
for $make_var (@make_var) { |
|
($config) = $line =~ /(CONFIG_[A-Za-z0-9_]+).*\b$make_var\b/; |
|
last if ($config); |
|
} |
|
} |
|
|
|
if (!$config) { |
|
for $make_var (@make_var) { |
|
($config) = $line =~ /\s*(\S+?)\s*[+:\?]*=.*\b$make_var\b/; |
|
last if ($config); |
|
} |
|
} |
|
|
|
# ----- next if no config found |
|
|
|
if (!$config) { |
|
$line = ""; |
|
next NEXT_LINE; |
|
} |
|
|
|
for $if_config (@if_config) { |
|
$config = $if_config . " && " . $config; |
|
} |
|
|
|
push @{ $driver_config{$driver} }, $config; |
|
|
|
$line = ""; |
|
} |
|
|
|
close(MAKEFILE_FILE); |
|
|
|
} |
|
|
|
|
|
sub find_kconfig |
|
{ |
|
my $pn_arg_ref = shift; |
|
my $driver = shift; |
|
|
|
my $lines_printed = 0; |
|
my @configs; |
|
|
|
if (!@{ $driver_config{$driver} }) { |
|
&scan_makefile($pn_arg_ref, $driver); |
|
if (!@{ $driver_config{$driver} }) { |
|
push @{ $driver_config{$driver} }, "no_config"; |
|
} |
|
} |
|
|
|
@configs = @{ $driver_config{$driver} }; |
|
|
|
$$pn_arg_ref{config_cnt} = $#configs + 1; |
|
for my $config (@configs) { |
|
$$pn_arg_ref{config} = $config; |
|
$lines_printed += &print_node($pn_arg_ref); |
|
} |
|
|
|
return $lines_printed; |
|
} |
|
|
|
|
|
sub handle_compatible() |
|
{ |
|
my $full_node = shift; |
|
my $node = shift; |
|
my $compatible = shift; |
|
my $node_enabled = shift; |
|
|
|
my $compat; |
|
my $lines_printed = 0; |
|
my %pn_arg = (); |
|
|
|
return if (!$node or !$compatible); |
|
|
|
# Do not process compatible property of root node, |
|
# it is used to match board, not to bind a driver. |
|
return if ($node eq "/"); |
|
|
|
$pn_arg{full_node} = $full_node; |
|
$pn_arg{node} = $node; |
|
$pn_arg{node_enabled} = $node_enabled; |
|
|
|
my @compatibles = split('", "', $compatible); |
|
|
|
$compatibles[0] =~ s/^"//; |
|
$compatibles[$#compatibles] =~ s/"$//; |
|
|
|
$pn_arg{compatible_cnt} = $#compatibles + 1; |
|
|
|
COMPAT: |
|
for $compat (@compatibles) { |
|
|
|
$pn_arg{compat} = $compat; |
|
$pn_arg{driver_cnt} = 0; |
|
$pn_arg{white_list} = 0; |
|
|
|
if (exists($compat_white_list{$compat})) { |
|
$pn_arg{white_list} = 1; |
|
$pn_arg{driver} = "no_driver"; |
|
$pn_arg{config_cnt} = 1; |
|
$pn_arg{config} = "no_config"; |
|
$lines_printed += &print_node(\%pn_arg); |
|
next COMPAT; |
|
} |
|
|
|
# ----- if compat previously seen, use cached info |
|
|
|
if (exists($compat_driver{$compat})) { |
|
for my $driver (@{ $compat_driver{$compat} }) { |
|
$pn_arg{driver} = $driver; |
|
$pn_arg{driver_cnt} = $driver_count{$compat}; |
|
$pn_arg{config_cnt} = $#{ $driver_config{$driver}} + 1; |
|
|
|
for my $config (@{ $driver_config{$driver} }) { |
|
$pn_arg{config} = $config; |
|
$lines_printed += &print_node(\%pn_arg); |
|
} |
|
|
|
if (!@{ $driver_config{$driver} }) { |
|
# no config cached yet |
|
# $driver in %driver_hard_code_list |
|
# but not %driver_config_hard_code_list |
|
$lines_printed += &find_kconfig(\%pn_arg, $driver); |
|
} |
|
} |
|
next COMPAT; |
|
} |
|
|
|
|
|
# ----- Find drivers (source files that contain compatible) |
|
|
|
# this will miss arch/sparc/include/asm/parport.h |
|
# It is better to move the compatible out of the .h |
|
# than to add *.h. to the files list, because *.h generates |
|
# a lot of false negatives. |
|
my $files = '"*.c"'; |
|
my $drivers = `git grep -l '"$compat"' -- $files`; |
|
chomp($drivers); |
|
if ($drivers eq "") { |
|
$pn_arg{driver} = "no_driver"; |
|
$pn_arg{config_cnt} = 1; |
|
$pn_arg{config} = "no_config"; |
|
push @{ $compat_driver{$compat} }, "no_driver"; |
|
$lines_printed += &print_node(\%pn_arg); |
|
next COMPAT; |
|
} |
|
|
|
my @drivers = split("\n", $drivers); |
|
$driver_count{$compat} = $#drivers + 1; |
|
$pn_arg{driver_cnt} = $#drivers + 1; |
|
|
|
DRIVER: |
|
for my $driver (@drivers) { |
|
push @{ $compat_driver{$compat} }, $driver; |
|
$pn_arg{driver} = $driver; |
|
|
|
# ----- if driver previously seen, use cached info |
|
|
|
$pn_arg{config_cnt} = $#{ $driver_config{$driver} } + 1; |
|
for my $config (@{ $driver_config{$driver} }) { |
|
$pn_arg{config} = $config; |
|
$lines_printed += &print_node(\%pn_arg); |
|
} |
|
if (@{ $driver_config{$driver} }) { |
|
next DRIVER; |
|
} |
|
|
|
if ($black_list_driver) { |
|
for $black (@black_list_driver) { |
|
next DRIVER if ($driver =~ /^$black$/); |
|
} |
|
} |
|
|
|
|
|
# ----- Find Kconfig symbols that enable driver |
|
|
|
$lines_printed += &find_kconfig(\%pn_arg, $driver); |
|
|
|
} |
|
} |
|
|
|
# White space (line) between nodes for readability. |
|
# Each node may report several compatibles. |
|
# For each compatible, multiple drivers may be reported. |
|
# For each driver, multiple CONFIG_ options may be reported. |
|
if ($lines_printed) { |
|
print "\n"; |
|
} |
|
} |
|
|
|
sub read_dts() |
|
{ |
|
my $file = shift; |
|
|
|
my $compatible = ""; |
|
my $line; |
|
my $node = ""; |
|
my $node_enabled = ""; |
|
|
|
if (! -r $file) { |
|
print STDERR "file '$file' is not readable or does not exist\n"; |
|
exit 3; |
|
} |
|
|
|
if (!open(DT_FILE, "-|", "$dtx_diff $file")) { |
|
print STDERR "\n"; |
|
print STDERR "shell command failed:\n"; |
|
print STDERR " $dtx_diff $file\n"; |
|
print STDERR "\n"; |
|
exit 3; |
|
} |
|
|
|
FILE: |
|
while ($line = <DT_FILE>) { |
|
chomp($line); |
|
|
|
if ($line =~ /{/) { |
|
|
|
&handle_compatible($full_node, $node, $compatible, |
|
$node_enabled); |
|
|
|
while ($end_node_count-- > 0) { |
|
pop @full_node; |
|
}; |
|
$end_node_count = 0; |
|
$full_node = @full_node[-1]; |
|
|
|
$node = $line; |
|
$node =~ s/^\s*(.*)\s+\{.*/$1/; |
|
$node =~ s/.*: //; |
|
if ($node eq '/' ) { |
|
$full_node = '/'; |
|
} elsif ($full_node ne '/') { |
|
$full_node = $full_node . '/' . $node; |
|
} else { |
|
$full_node = '/' . $node; |
|
} |
|
push @full_node, $full_node; |
|
|
|
$compatible = ""; |
|
$node_enabled = ""; |
|
next FILE; |
|
} |
|
|
|
if ($line =~ /}/) { |
|
$end_node_count++; |
|
} |
|
|
|
if ($line =~ /(\s+|^)status =/) { |
|
$node_enabled = $line; |
|
$node_enabled =~ s/^\t*//; |
|
$node_enabled =~ s/^status = "//; |
|
$node_enabled =~ s/";$//; |
|
next FILE; |
|
} |
|
|
|
if ($line =~ /(\s+|^)compatible =/) { |
|
# Extract all compatible entries for this device |
|
# White space matching here and in handle_compatible() is |
|
# precise, because input format is the output of dtc, |
|
# which is invoked by dtx_diff. |
|
$compatible = $line; |
|
$compatible =~ s/^\t*//; |
|
$compatible =~ s/^compatible = //; |
|
$compatible =~ s/;$//; |
|
} |
|
} |
|
|
|
&handle_compatible($full_node, $node, $compatible, $node_enabled); |
|
|
|
close(DT_FILE); |
|
} |
|
|
|
|
|
sub read_config_file() |
|
{ |
|
if (! -r $config_file) { |
|
print STDERR "file '$config_file' is not readable or does not exist\n"; |
|
exit 2; |
|
} |
|
|
|
if (!open(CONFIG_FILE, "<", "$config_file")) { |
|
print STDERR "open $config_file failed\n"; |
|
exit 2; |
|
} |
|
|
|
my @line; |
|
|
|
LINE: |
|
while ($line = <CONFIG_FILE>) { |
|
chomp($line); |
|
next LINE if ($line =~ /^\s*#/); |
|
next LINE if ($line =~ /^\s*$/); |
|
@line = split /=/, $line; |
|
$existing_config{@line[0]} = @line[1]; |
|
} |
|
|
|
close(CONFIG_FILE); |
|
} |
|
|
|
|
|
sub cmd_line_err() |
|
{ |
|
my $msg = shift; |
|
|
|
print STDERR "\n"; |
|
print STDERR " ERROR processing command line options\n"; |
|
print STDERR " $msg\n" if ($msg ne ""); |
|
print STDERR "\n"; |
|
print STDERR " For help, type '$script_name --help'\n"; |
|
print STDERR "\n"; |
|
} |
|
|
|
|
|
# ----------------------------------------------------------------------------- |
|
# program entry point |
|
|
|
Getopt::Long::Configure("no_ignore_case", "bundling"); |
|
|
|
if (!GetOptions( |
|
"c=s" => \$config_file, |
|
"config=s" => \$config_file, |
|
"config-format" => \$config_format, |
|
"exclude-flag=s" => \@exclude_flag, |
|
"h" => \$help, |
|
"help" => \$help, |
|
"black-list-driver" => \$black_list_driver, |
|
"white-list-config" => \$white_list_config, |
|
"white-list-driver" => \$white_list_driver, |
|
"include-flag=s" => \@include_flag, |
|
"include-suspect" => \$include_suspect, |
|
"short-name" => \$short_name, |
|
"show-lists" => \$show_lists, |
|
"version" => \$version, |
|
)) { |
|
|
|
&cmd_line_err(); |
|
|
|
exit 1; |
|
} |
|
|
|
|
|
my $exit_after_messages = 0; |
|
|
|
if ($version) { |
|
print STDERR "\n$script_name $VUFX\n\n"; |
|
$exit_after_messages = 1; |
|
} |
|
|
|
|
|
if ($help) { |
|
&usage; |
|
$exit_after_messages = 1; |
|
} |
|
|
|
|
|
if ($show_lists) { |
|
|
|
print "\n"; |
|
print "These compatibles are hard coded to have no driver.\n"; |
|
print "\n"; |
|
for my $compat (sort keys %compat_white_list) { |
|
print " $compat\n"; |
|
} |
|
|
|
|
|
print "\n\n"; |
|
print "The driver for these compatibles is hard coded (white list).\n"; |
|
print "\n"; |
|
my $max_compat_len = 0; |
|
for my $compat (sort keys %driver_hard_code_list) { |
|
if (length $compat > $max_compat_len) { |
|
$max_compat_len = length $compat; |
|
} |
|
} |
|
for my $compat (sort keys %driver_hard_code_list) { |
|
if (($driver ne "hardcoded_no_driver") && ($driver ne "no_driver")) { |
|
my $first = 1; |
|
for my $driver (@{ $driver_hard_code_list{$compat} }) { |
|
if ($first) { |
|
print " $compat"; |
|
print " " x ($max_compat_len - length $compat); |
|
$first = 0; |
|
} else { |
|
print " ", " " x $max_compat_len; |
|
} |
|
print " $driver\n"; |
|
} |
|
} |
|
} |
|
|
|
|
|
print "\n\n"; |
|
print "The configuration option for these drivers is hard coded (white list).\n"; |
|
print "\n"; |
|
my $max_driver_len = 0; |
|
for my $driver (sort keys %driver_config_hard_code_list) { |
|
if (length $driver > $max_driver_len) { |
|
$max_driver_len = length $driver; |
|
} |
|
} |
|
for my $driver (sort keys %driver_config_hard_code_list) { |
|
if (($driver ne "hardcoded_no_driver") && ($driver ne "no_driver")) { |
|
my $first = 1; |
|
for my $config (@{ $driver_config_hard_code_list{$driver} }) { |
|
if ($first) { |
|
print " $driver"; |
|
print " " x ($max_driver_len - length $driver); |
|
$first = 0; |
|
} else { |
|
print " ", " " x $max_driver_len; |
|
} |
|
print " $config\n"; |
|
} |
|
} |
|
} |
|
|
|
|
|
print "\n\n"; |
|
print "These drivers are black listed.\n"; |
|
print "\n"; |
|
for my $driver (@black_list_driver) { |
|
print " $driver\n"; |
|
} |
|
|
|
print "\n"; |
|
|
|
$exit_after_messages = 1; |
|
} |
|
|
|
|
|
if ($exit_after_messages) { |
|
exit 0; |
|
} |
|
|
|
|
|
$exclude_flag_pattern = "["; |
|
for my $exclude_flag (@exclude_flag) { |
|
$exclude_flag_pattern = $exclude_flag_pattern . $exclude_flag; |
|
} |
|
$exclude_flag_pattern = $exclude_flag_pattern . "]"; |
|
# clean up if empty |
|
$exclude_flag_pattern =~ s/^\[\]$//; |
|
|
|
|
|
$include_flag_pattern = "["; |
|
for my $include_flag (@include_flag) { |
|
$include_flag_pattern = $include_flag_pattern . $include_flag; |
|
} |
|
$include_flag_pattern = $include_flag_pattern . "]"; |
|
# clean up if empty |
|
$include_flag_pattern =~ s/^\[\]$//; |
|
|
|
|
|
if ($exclude_flag_pattern) { |
|
my $found = 0; |
|
for $pr_flag_value (@pr_flag_value) { |
|
if ($exclude_flag_pattern =~ m/$pr_flag_value/) { |
|
$found = 1; |
|
} |
|
} |
|
if (!$found) { |
|
&cmd_line_err("invalid value for FLAG in --exclude-flag\n"); |
|
exit 1 |
|
} |
|
} |
|
|
|
if ($include_flag_pattern) { |
|
my $found = 0; |
|
for $pr_flag_value (@pr_flag_value) { |
|
if ($include_flag_pattern =~ m/$pr_flag_value/) { |
|
$found = 1; |
|
} |
|
} |
|
if (!$found) { |
|
&cmd_line_err("invalid value for FLAG in --include-flag\n"); |
|
exit 1 |
|
} |
|
} |
|
|
|
if ($include_suspect) { |
|
$include_flag_pattern =~ s/\[//; |
|
$include_flag_pattern =~ s/\]//; |
|
$include_flag_pattern = "[" . $include_flag_pattern . "A-Z]"; |
|
} |
|
|
|
if ($exclude_flag_pattern =~ m/$include_flag_pattern/) { |
|
&cmd_line_err("the same flag appears in both --exclude-flag and --include-flag or --include-suspect\n"); |
|
exit 1 |
|
} |
|
|
|
|
|
# ($#ARGV < 0) is valid for --help, --version |
|
if ($#ARGV < 0) { |
|
&cmd_line_err("device-tree... is required"); |
|
exit 1 |
|
} |
|
|
|
|
|
if ($config_file) { |
|
&read_config_file(); |
|
} |
|
|
|
|
|
# avoid pushing duplicates for this value |
|
$driver = "hardcoded_no_driver"; |
|
for $config ( @{ $driver_config_hard_code_list{$driver} } ) { |
|
push @{ $driver_config{$driver} }, $config; |
|
} |
|
|
|
if ($white_list_driver) { |
|
for my $compat (keys %driver_hard_code_list) { |
|
for my $driver (@{ $driver_hard_code_list{$compat} }) { |
|
push @{ $compat_driver{$compat} }, $driver; |
|
if ($driver ne "hardcoded_no_driver") { |
|
$driver_count{$compat} = scalar @{ $compat_driver{$compat} }; |
|
} |
|
} |
|
} |
|
} |
|
|
|
if ($white_list_config) { |
|
for my $driver (keys %driver_config_hard_code_list) { |
|
if ($driver ne "hardcoded_no_driver") { |
|
for $config ( @{ $driver_config_hard_code_list{$driver} } ) { |
|
push @{ $driver_config{$driver} }, $config; |
|
} |
|
} |
|
} |
|
} |
|
|
|
if (-x "scripts/dtc/dtx_diff") { |
|
$dtx_diff = "scripts/dtc/dtx_diff"; |
|
} else { |
|
|
|
print STDERR "\n"; |
|
print STDERR "$script_name must be run from the root directory of a Linux kernel tree\n"; |
|
print STDERR "\n"; |
|
exit 3; |
|
} |
|
|
|
for $file (@ARGV) { |
|
&read_dts($file); |
|
}
|
|
|