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- AMBA AXI with ACE | 문c
카테고리: 리눅스 커널
AMBA AXI with ACE
AMBA System Environment
AMBA-4 400 시리즈
Cache Coherent
인터럽트
ACE Protocol
Load Operation
Write Operation
Transactions
AXI 공통 채널 (5개)
추가된 ACE 채널들 (+3개)
채널별 시그널 및 상세 테이블
DTB – 라즈베리파이2 샘플 소스
DTB – 라즈베리파이2용 소스
bcm2709-rpi-2-b.dts
arch/arm/boot/dts/bcm2709-rpi-2-b.dts
/dts-v1/;
/include/ "bcm2709.dtsi"
/ {
compatible = "brcm,bcm2709";
model = "Raspberry Pi 2 Model B";
};
&gpio {
spi0_pins: spi0_pins {
brcm,pins = <7 8 9 10 11>;
brcm,function = <4>; /* alt0 */
};
i2c0_pins: i2c0 {
brcm,pins = <0 1>;
brcm,function = <4>;
};
i2c1_pins: i2c1 {
brcm,pins = <2 3>;
brcm,function = <4>;
};
i2s_pins: i2s {
brcm,pins = <18 19 20 21>;
brcm,function = <4>; /* alt0 */
};
};
&mmc {
status = "okay";
bus-width = <4>;
};
&fb {
status = "okay";
};
&uart0 {
status = "okay";
};
&spi0 {
pinctrl-names = "default";
pinctrl-0 = <&spi0_pins>;
spidev@0{
compatible = "spidev";
reg = <0>; /* CE0 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <500000>;
};
spidev@1{
compatible = "spidev";
reg = <1>; /* CE1 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <500000>;
};
};
&i2c0 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
clock-frequency = <100000>;
};
&i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&i2c1_pins>;
clock-frequency = <100000>;
};
&i2c2 {
clock-frequency = <100000>;
};
&i2s {
#sound-dai-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&i2s_pins>;
};
&leds {
act_led: act {
label = "led0";
linux,default-trigger = "mmc0";
gpios = <&gpio 47 0>;
};
pwr_led: pwr {
label = "led1";
linux,default-trigger = "input";
gpios = <&gpio 35 0>;
};
};
/ {
__overrides__ {
uart0 = <&uart0>,"status";
uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
uart1_clkrate = <&uart1>,"clock-frequency:0";
i2s = <&i2s>,"status";
spi = <&spi0>,"status";
i2c0 = <&i2c0>,"status";
i2c1 = <&i2c1>,"status";
i2c2_iknowwhatimdoing = <&i2c2>,"status";
i2c0_baudrate = <&i2c0>,"clock-frequency:0";
i2c1_baudrate = <&i2c1>,"clock-frequency:0";
i2c2_baudrate = <&i2c2>,"clock-frequency:0";
core_freq = <&clk_core>,"clock-frequency:0";
act_led_gpio = <&act_led>,"gpios:4";
act_led_activelow = <&act_led>,"gpios:8";
act_led_trigger = <&act_led>,"linux,default-trigger";
pwr_led_gpio = <&pwr_led>,"gpios:4";
pwr_led_activelow = <&pwr_led>,"gpios:8";
pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
audio = <&audio>,"status";
watchdog = <&watchdog>,"status";
random = <&random>,"status";
};
};
bcm2709.dtsi
arch/arm/boot/dts/bcm2709.dtsi
/include/ "bcm2708_common.dtsi"
/ {
compatible = "brcm,bcm2709";
model = "BCM2709";
chosen {
/* No padding required - the boot loader can do that. */
bootargs = "";
};
soc {
ranges = <0x7e000000 0x3f000000 0x01000000>;
arm-pmu {
compatible = "arm,cortex-a7-pmu";
interrupts = <3 9>;
};
};
timer {
compatible = "arm,armv7-timer";
clock-frequency = <19200000>;
interrupts = <3 0>, // PHYS_SECURE_PPI
<3 1>, // PHYS_NONSECURE_PPI
<3 3>, // VIRT_PPI
<3 2>; // HYP_PPI
always-on;
};
cpus: cpus {
#address-cells = <1>;
#size-cells = <0>;
v7_cpu0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf00>;
clock-frequency = <800000000>;
};
v7_cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf01>;
clock-frequency = <800000000>;
};
v7_cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf02>;
clock-frequency = <800000000>;
};
v7_cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf03>;
clock-frequency = <800000000>;
};
};
__overrides__ {
arm_freq = <&v7_cpu0>, "clock-frequency:0",
<&v7_cpu1>, "clock-frequency:0",
<&v7_cpu2>, "clock-frequency:0",
<&v7_cpu3>, "clock-frequency:0";
};
};
bcm2708_common.dtsi
arch/arm/boot/dts/bcm2708_common.dtsi
/ {
interrupt-parent = <&intc>;
aliases {
audio = &audio;
sound = &sound;
soc = &soc;
dma = &dma;
intc = &intc;
watchdog = &watchdog;
random = &random;
mailbox = &mailbox;
gpio = &gpio;
uart0 = &uart0;
i2s = &i2s;
spi0 = &spi0;
i2c0 = &i2c0;
uart1 = &uart1;
mmc = &mmc;
i2c1 = &i2c1;
i2c2 = &i2c2;
usb = &usb;
leds = &leds;
fb = &fb;
vchiq = &vchiq;
thermal = &thermal;
clocks = &clocks;
};
/* Onboard audio */
audio: audio {
compatible = "brcm,bcm2835-audio";
brcm,pwm-channels = <8>;
status = "disabled";
};
/* External sound card */
sound: sound {
};
soc: soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
dma: dma@7e007000 {
compatible = "brcm,bcm2835-dma";
reg = <0x7e007000 0xf00>;
interrupts = <1 16>,
<1 17>,
<1 18>,
<1 19>,
<1 20>,
<1 21>,
<1 22>,
<1 23>,
<1 24>,
<1 25>,
<1 26>,
<1 27>,
<1 28>;
#dma-cells = <1>;
brcm,dma-channel-mask = <0x7f35>;
};
intc: interrupt-controller {
compatible = "brcm,bcm2708-armctrl-ic";
reg = <0x7e00b200 0x200>;
interrupt-controller;
#interrupt-cells = <2>;
};
mailbox: mailbox@7e00b800 {
compatible = "brcm,bcm2708-vcio";
reg = <0x7e00b880 0x40>;
interrupts = <0 1>;
};
watchdog: watchdog@7e100000 {
compatible = "brcm,bcm2835-pm-wdt";
reg = <0x7e100000 0x28>;
status = "disabled";
};
random: rng@7e104000 {
compatible = "brcm,bcm2835-rng";
reg = <0x7e104000 0x10>;
status = "disabled";
};
gpio: gpio {
compatible = "brcm,bcm2835-gpio";
reg = <0x7e200000 0xb4>;
interrupts = <2 17>, <2 18>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};
uart0: uart@7e201000 {
compatible = "arm,pl011", "arm,primecell";
reg = <0x7e201000 0x1000>;
interrupts = <2 25>;
clocks = <&clk_uart0 &clk_apb_p>;
clock-names = "uartclk","apb_pclk";
arm,primecell-periphid = <0x00241011>; // For an explanation, see
// https://github.com/raspberrypi/linux/commit/13731d862cf5219216533a3b0de052cee4cc5038
status = "disabled";
};
i2s: i2s@7e203000 {
compatible = "brcm,bcm2708-i2s";
reg = <0x7e203000 0x20>,
<0x7e101098 0x02>;
//dmas = <&dma 2>,
// <&dma 3>;
dma-names = "tx", "rx";
status = "disabled";
};
spi0: spi@7e204000 {
compatible = "brcm,bcm2835-spi";
reg = <0x7e204000 0x1000>;
interrupts = <2 22>;
clocks = <&clk_core>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
/* the dma channels */
dmas = <&dma 6>, <&dma 7>;
dma-names = "tx", "rx";
/* the chipselects used - <0> means native GPIO
* add more gpios if necessary as <&gpio 6 1>
* (but do not forget to make them output!)
*/
cs-gpios = <0>, <0>;
};
i2c0: i2c@7e205000 {
compatible = "brcm,bcm2708-i2c";
reg = <0x7e205000 0x1000>;
interrupts = <2 21>;
clocks = <&clk_i2c>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
};
uart1: uart@7e215040 {
compatible = "brcm,bcm2835-aux-uart", "ns16550";
reg = <0x7e215040 0x40>;
interrupts = <1 29>;
clock-frequency = <500000000>;
reg-shift = <2>;
no-loopback-test;
status = "disabled";
};
mmc: mmc@7e300000 {
compatible = "brcm,bcm2835-mmc";
reg = <0x7e300000 0x100>;
interrupts = <2 30>;
clocks = <&clk_mmc>;
dmas = <&dma 11>,
<&dma 11>;
dma-names = "tx", "rx";
status = "disabled";
};
i2c1: i2c@7e804000 {
compatible = "brcm,bcm2708-i2c";
reg = <0x7e804000 0x1000>;
interrupts = <2 21>;
clocks = <&clk_i2c>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
};
i2c2: i2c@7e805000 {
// Beware - this is shared with the HDMI module.
// Careless use may break (really) your display.
// Caveat emptor.
compatible = "brcm,bcm2708-i2c";
reg = <0x7e805000 0x1000>;
interrupts = <2 21>;
clocks = <&clk_i2c>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
};
usb: usb@7e980000 {
compatible = "brcm,bcm2708-usb";
reg = <0x7e980000 0x10000>,
<0x7e006000 0x1000>;
interrupts = <2 0>,
<1 9>;
};
leds: leds {
compatible = "gpio-leds";
};
fb: fb {
compatible = "brcm,bcm2708-fb";
status = "disabled";
};
vchiq: vchiq {
compatible = "brcm,bcm2835-vchiq";
reg = <0x7e00b840 0xf>;
interrupts = <0 2>;
cache-line-size = <32>;
};
thermal: thermal {
compatible = "brcm,bcm2835-thermal";
};
};
clocks: clocks {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;
clk_mmc: clock@0 {
compatible = "fixed-clock";
reg = <0>;
#clock-cells = <0>;
clock-output-names = "mmc";
clock-frequency = <250000000>;
};
clk_i2c: clock@1 {
compatible = "fixed-clock";
reg = <1>;
#clock-cells = <0>;
clock-output-names = "i2c";
clock-frequency = <250000000>;
};
clk_core: clock@2 {
compatible = "fixed-clock";
reg = <2>;
#clock-cells = <0>;
clock-output-names = "core";
clock-frequency = <250000000>;
};
clk_uart0: clock@3 {
compatible = "fixed-clock";
reg = <3>;
#clock-cells = <0>;
clock-output-names = "uart0_pclk";
clock-frequency = <3000000>;
};
clk_apb_p: clock@4 {
compatible = "fixed-clock";
reg = <4>;
#clock-cells = <0>;
clock-output-names = "apb_pclk";
clock-frequency = <126000000>;
};
};
__overrides__ {
cache_line_size = <&vchiq>, "cache-line-size:0";
};
};
skeleton.dtsi
arch/arm/boot/dts/skeleton.dtsi
/*
* Skeleton device tree; the bare minimum needed to boot; just include and
* add a compatible value. The bootloader will typically populate the memory
* node.
*/
/ {
#address-cells = <1>;
#size-cells = <1>;
chosen { };
aliases { };
memory { device_type = "memory"; reg = <0 0>; };
};
통합 Script
위의 4개 스크립트를 dtc로 컴파일하면 하나의 스크립트로 병합시킬 수 있다.
- dtc bcm2709-rpi-2-b.dts -O dtb > a.dtsi
/dts-v1/;
/ {
#address-cells = <0x1>;
#size-cells = <0x1>;
interrupt-parent = <0x1>;
compatible = "brcm,bcm2709";
model = "Raspberry Pi 2 Model B";
chosen {
bootargs = [00];
};
aliases {
audio = "/audio";
sound = "/sound";
soc = "/soc";
dma = "/soc/dma@7e007000";
intc = "/soc/interrupt-controller";
watchdog = "/soc/watchdog@7e100000";
random = "/soc/rng@7e104000";
mailbox = "/soc/mailbox@7e00b800";
gpio = "/soc/gpio";
uart0 = "/soc/uart@7e201000";
i2s = "/soc/i2s@7e203000";
spi0 = "/soc/spi@7e204000";
i2c0 = "/soc/i2c@7e205000";
uart1 = "/soc/uart@7e215040";
mmc = "/soc/mmc@7e300000";
i2c1 = "/soc/i2c@7e804000";
i2c2 = "/soc/i2c@7e805000";
usb = "/soc/usb@7e980000";
leds = "/soc/leds";
fb = "/soc/fb";
vchiq = "/soc/vchiq";
thermal = "/soc/thermal";
clocks = "/clocks";
};
memory {
device_type = "memory";
reg = <0x0 0x0>;
};
audio: audio {
compatible = "brcm,bcm2835-audio";
brcm,pwm-channels = <0x8>;
status = "disabled";
linux,phandle = <0x1b>;
phandle = <0x1b>;
};
sound: sound {
};
soc: soc {
compatible = "simple-bus";
#address-cells = <0x1>;
#size-cells = <0x1>;
ranges = <0x7e000000 0x3f000000 0x1000000>;
dma: dma@7e007000 {
compatible = "brcm,bcm2835-dma";
reg = <0x7e007000 0xf00>;
interrupts = <0x1 0x10 0x1 0x11 0x1 0x12 0x1 0x13 0x1 0x14 0x1 0x15 0x1 0x16 0x1 0x17 0x1 0x18 0x1 0x19 0x1 0x1a 0x1 0x1b 0x1 0x1c>;
#dma-cells = <0x1>;
brcm,dma-channel-mask = <0x7f35>;
linux,phandle = <0x6>;
phandle = <0x6>;
};
intc: interrupt-controller {
compatible = "brcm,bcm2708-armctrl-ic";
reg = <0x7e00b200 0x200>;
interrupt-controller;
#interrupt-cells = <0x2>;
linux,phandle = <0x1>;
phandle = <0x1>;
};
mailbox: mailbox@7e00b800 {
compatible = "brcm,bcm2708-vcio";
reg = <0x7e00b880 0x40>;
interrupts = <0x0 0x1>;
};
watchdog: watchdog@7e100000 {
compatible = "brcm,bcm2835-pm-wdt";
reg = <0x7e100000 0x28>;
status = "disabled";
linux,phandle = <0x1c>;
phandle = <0x1c>;
};
random: rng@7e104000 {
compatible = "brcm,bcm2835-rng";
reg = <0x7e104000 0x10>;
status = "disabled";
linux,phandle = <0x1d>;
phandle = <0x1d>;
};
gpio: gpio {
compatible = "brcm,bcm2835-gpio";
reg = <0x7e200000 0xb4>;
interrupts = <0x2 0x11 0x2 0x12>;
gpio-controller;
#gpio-cells = <0x2>;
interrupt-controller;
#interrupt-cells = <0x2>;
linux,phandle = <0xc>;
phandle = <0xc>;
spi0_pins: spi0_pins {
brcm,pins = <0x7 0x8 0x9 0xa 0xb>;
brcm,function = <0x4>;
linux,phandle = <0x7>;
phandle = <0x7>;
};
i2c0_pins: i2c0 {
brcm,pins = <0x0 0x1>;
brcm,function = <0x4>;
linux,phandle = <0x9>;
phandle = <0x9>;
};
i2c1_pins: i2c1 {
brcm,pins = <0x2 0x3>;
brcm,function = <0x4>;
linux,phandle = <0xb>;
phandle = <0xb>;
};
i2s_pins: i2s {
brcm,pins = <0x12 0x13 0x14 0x15>;
brcm,function = <0x4>;
linux,phandle = <0x4>;
phandle = <0x4>;
};
};
uart0: uart@7e201000 {
compatible = "arm,pl011", "arm,primecell";
reg = <0x7e201000 0x1000>;
interrupts = <0x2 0x19>;
clocks = <0x2 0x3>;
clock-names = "uartclk", "apb_pclk";
arm,primecell-periphid = <0x241011>;
status = "okay";
linux,phandle = <0x12>;
phandle = <0x12>;
};
i2s: i2s@7e203000 {
compatible = "brcm,bcm2708-i2s";
reg = <0x7e203000 0x20 0x7e101098 0x2>;
dma-names = "tx", "rx";
status = "disabled";
#sound-dai-cells = <0x0>;
pinctrl-names = "default";
pinctrl-0 = <0x4>;
linux,phandle = <0x14>;
phandle = <0x14>;
};
spi0: spi@7e204000 {
compatible = "brcm,bcm2835-spi";
reg = <0x7e204000 0x1000>;
interrupts = <0x2 0x16>;
clocks = <0x5>;
#address-cells = <0x1>;
#size-cells = <0x0>;
status = "disabled";
dmas = <0x6 0x6 0x6 0x7>;
dma-names = "tx", "rx";
cs-gpios = <0x0 0x0>;
pinctrl-names = "default";
pinctrl-0 = <0x7>;
linux,phandle = <0x15>;
phandle = <0x15>;
spidev@0 {
compatible = "spidev";
reg = <0x0>;
#address-cells = <0x1>;
#size-cells = <0x0>;
spi-max-frequency = <0x7a120>;
};
spidev@1 {
compatible = "spidev";
reg = <0x1>;
#address-cells = <0x1>;
#size-cells = <0x0>;
spi-max-frequency = <0x7a120>;
};
};
i2c0: i2c@7e205000 {
compatible = "brcm,bcm2708-i2c";
reg = <0x7e205000 0x1000>;
interrupts = <0x2 0x15>;
clocks = <0x8>;
#address-cells = <0x1>;
#size-cells = <0x0>;
status = "disabled";
pinctrl-names = "default";
pinctrl-0 = <0x9>;
clock-frequency = <0x186a0>;
linux,phandle = <0x16>;
phandle = <0x16>;
};
uart1: uart@7e215040 {
compatible = "brcm,bcm2835-aux-uart", "ns16550";
reg = <0x7e215040 0x40>;
interrupts = <0x1 0x1d>;
clock-frequency = <0x1dcd6500>;
reg-shift = <0x2>;
no-loopback-test;
status = "disabled";
linux,phandle = <0x13>;
phandle = <0x13>;
};
mmc: mmc@7e300000 {
compatible = "brcm,bcm2835-mmc";
reg = <0x7e300000 0x100>;
interrupts = <0x2 0x1e>;
clocks = <0xa>;
dmas = <0x6 0xb 0x6 0xb>;
dma-names = "tx", "rx";
status = "okay";
bus-width = <0x4>;
};
i2c1: i2c@7e804000 {
compatible = "brcm,bcm2708-i2c";
reg = <0x7e804000 0x1000>;
interrupts = <0x2 0x15>;
clocks = <0x8>;
#address-cells = <0x1>;
#size-cells = <0x0>;
status = "disabled";
pinctrl-names = "default";
pinctrl-0 = <0xb>;
clock-frequency = <0x186a0>;
linux,phandle = <0x17>;
phandle = <0x17>;
};
i2c2: i2c@7e805000 {
compatible = "brcm,bcm2708-i2c";
reg = <0x7e805000 0x1000>;
interrupts = <0x2 0x15>;
clocks = <0x8>;
#address-cells = <0x1>;
#size-cells = <0x0>;
status = "disabled";
clock-frequency = <0x186a0>;
linux,phandle = <0x18>;
phandle = <0x18>;
};
usb: usb@7e980000 {
compatible = "brcm,bcm2708-usb";
reg = <0x7e980000 0x10000 0x7e006000 0x1000>;
interrupts = <0x2 0x0 0x1 0x9>;
};
leds: leds {
compatible = "gpio-leds";
act_led: act {
label = "led0";
linux,default-trigger = "mmc0";
gpios = <0xc 0x2f 0x0>;
linux,phandle = <0x19>;
phandle = <0x19>;
};
pwr_led: pwr {
label = "led1";
linux,default-trigger = "input";
gpios = <0xc 0x23 0x0>;
linux,phandle = <0x1a>;
phandle = <0x1a>;
};
};
fb: fb {
compatible = "brcm,bcm2708-fb";
status = "okay";
};
vchiq: vchiq {
compatible = "brcm,bcm2835-vchiq";
reg = <0x7e00b840 0xf>;
interrupts = <0x0 0x2>;
cache-line-size = <0x20>;
linux,phandle = <0xd>;
phandle = <0xd>;
};
thermal: thermal {
compatible = "brcm,bcm2835-thermal";
};
arm-pmu {
compatible = "arm,cortex-a7-pmu";
interrupts = <0x3 0x9>;
};
};
clocks: clocks {
compatible = "simple-bus";
#address-cells = <0x1>;
#size-cells = <0x0>;
clk_mmc: clock@0 {
compatible = "fixed-clock";
reg = <0x0>;
#clock-cells = <0x0>;
clock-output-names = "mmc";
clock-frequency = <0xee6b280>;
linux,phandle = <0xa>;
phandle = <0xa>;
};
clk_i2c: clock@1 {
compatible = "fixed-clock";
reg = <0x1>;
#clock-cells = <0x0>;
clock-output-names = "i2c";
clock-frequency = <0xee6b280>;
linux,phandle = <0x8>;
phandle = <0x8>;
};
clk_core: clock@2 {
compatible = "fixed-clock";
reg = <0x2>;
#clock-cells = <0x0>;
clock-output-names = "core";
clock-frequency = <0xee6b280>;
linux,phandle = <0x5>;
phandle = <0x5>;
};
clk_uart0: clock@3 {
compatible = "fixed-clock";
reg = <0x3>;
#clock-cells = <0x0>;
clock-output-names = "uart0_pclk";
clock-frequency = <0x2dc6c0>;
linux,phandle = <0x2>;
phandle = <0x2>;
};
clk_apb_p: clock@4 {
compatible = "fixed-clock";
reg = <0x4>;
#clock-cells = <0x0>;
clock-output-names = "apb_pclk";
clock-frequency = <0x7829b80>;
linux,phandle = <0x3>;
phandle = <0x3>;
};
};
__overrides__ {
cache_line_size = "", "", "", "\rcache-line-size:0";
arm_freq = <0xe 0x636c6f63 0x6b2d6672 0x65717565 0x6e63793a 0x30000000 0xf636c 0x6f636b2d 0x66726571 0x75656e63 0x793a3000 0x10 0x636c6f63 0x6b2d6672 0x65717565 0x6e63793a 0x30000000 0x11636c 0x6f636b2d 0x66726571 0x75656e63 0x793a3000>;
uart0 = [00 00 00 12 73 74 61 74 75 73 00];
uart0_clkrate = [00 00 00 02 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
uart1_clkrate = [00 00 00 13 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
i2s = [00 00 00 14 73 74 61 74 75 73 00];
spi = [00 00 00 15 73 74 61 74 75 73 00];
i2c0 = [00 00 00 16 73 74 61 74 75 73 00];
i2c1 = [00 00 00 17 73 74 61 74 75 73 00];
i2c2_iknowwhatimdoing = [00 00 00 18 73 74 61 74 75 73 00];
i2c0_baudrate = [00 00 00 16 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
i2c1_baudrate = [00 00 00 17 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
i2c2_baudrate = [00 00 00 18 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
core_freq = [00 00 00 05 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00];
act_led_gpio = <0x19 0x6770696f 0x733a3400>;
act_led_activelow = <0x19 0x6770696f 0x733a3800>;
act_led_trigger = [00 00 00 19 6c 69 6e 75 78 2c 64 65 66 61 75 6c 74 2d 74 72 69 67 67 65 72 00];
pwr_led_gpio = <0x1a 0x6770696f 0x733a3400>;
pwr_led_activelow = <0x1a 0x6770696f 0x733a3800>;
pwr_led_trigger = [00 00 00 1a 6c 69 6e 75 78 2c 64 65 66 61 75 6c 74 2d 74 72 69 67 67 65 72 00];
audio = [00 00 00 1b 73 74 61 74 75 73 00];
watchdog = [00 00 00 1c 73 74 61 74 75 73 00];
random = [00 00 00 1d 73 74 61 74 75 73 00];
};
timer {
compatible = "arm,armv7-timer";
clock-frequency = <0x124f800>;
interrupts = <0x3 0x0 0x3 0x1 0x3 0x3 0x3 0x2>;
always-on;
};
cpus: cpus {
#address-cells = <0x1>;
#size-cells = <0x0>;
v7_cpu0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf00>;
clock-frequency = <0x2faf0800>;
linux,phandle = <0xe>;
phandle = <0xe>;
};
v7_cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf01>;
clock-frequency = <0x2faf0800>;
linux,phandle = <0xf>;
phandle = <0xf>;
};
v7_cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf02>;
clock-frequency = <0x2faf0800>;
linux,phandle = <0x10>;
phandle = <0x10>;
};
v7_cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0xf03>;
clock-frequency = <0x2faf0800>;
linux,phandle = <0x11>;
phandle = <0x11>;
};
};
};
- 라즈베리안에서 실제 넘겨주는 스크립트에는 다음의 내용이 추가된다.
- 루트 노드의 속성으로 memreserve = <0x37000000 0x00000000>;
- memory 노드의 속성으로 reg = <0x00000000 0x736f6300>;
- 메모리 사이즈는 설정에 따라 다르다.
- 아래와 같은 display 노드
- display {
broadcom,depth = <0x00000010>;
broadcom,height = <0x00000000>;
broadcom,width = <0x00000000>;
};
- display {
- 입출력 장치가 사용하는 0x7e****** 주소들은 물리주소나 가상주소가 아닌 버스주소이다.
컴파일된 DTB
커널 v4.2부터 디바이스 트리 내부에서도 커널 헤더를 참고하여 컴파일 할 수 있다.
- 커널 v4.1 까지
- 예) dts -> dtb로 컴파일
- dtc -I dts -O dtb bcm2709-rpi-2-b.dts -o bcm2709-rpi-2-b.dtb
- 예) dts <- dtb로 역 컴파일
- dtc -I dtb -O dts bcm2709-rpi-2-b.dtb -o bcm2709-rpi-2-b.dts
- 예) dts -> dtb로 컴파일
- 커널 v4.2 부터
- dts 파일 내부에서 #include를 사용하므로 gcc의 프리프로세서가 필요하다. 따라서 dtc를 사용하여 바로 컴파일 할 수 없으며, 리눅스 디렉토리에서 make 명령을 사용한다.
- dts <- dtb로 역 컴파일하는 방법은 기존과 동일하다.
- 예) make bcm2709-rpi2-b.dtb
- 예) make broadcom/ns2-svk.dtb
- dts 파일 내부에서 #include를 사용하므로 gcc의 프리프로세서가 필요하다. 따라서 dtc를 사용하여 바로 컴파일 할 수 없으며, 리눅스 디렉토리에서 make 명령을 사용한다.
다음은 dtb를 dump한 예) hexdump a.dtb -C
00000000 d0 0d fe ed 00 00 20 7f 00 00 00 38 00 00 1d 14 |...... ....8....|
00000010 00 00 00 28 00 00 00 11 00 00 00 10 00 00 0f 00 |...(............|
00000020 00 00 03 6b 00 00 1c dc 00 00 00 00 00 00 00 00 |...k............|
00000030 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 |................|
00000040 00 00 00 03 00 00 00 04 00 00 00 00 00 00 00 01 |................|
00000050 00 00 00 03 00 00 00 04 00 00 00 0f 00 00 00 01 |................|
00000060 00 00 00 03 00 00 00 04 00 00 00 1b 00 00 00 01 |................|
00000070 00 00 00 03 00 00 00 0d 00 00 00 2c 62 72 63 6d |...........,brcm|
00000080 2c 62 63 6d 32 37 30 39 00 00 00 00 00 00 00 03 |,bcm2709........|
00000090 00 00 00 17 00 00 00 37 52 61 73 70 62 65 72 72 |.......7Raspberr|
000000a0 79 20 50 69 20 32 20 4d 6f 64 65 6c 20 42 00 00 |y Pi 2 Model B..|
000000b0 00 00 00 01 63 68 6f 73 65 6e 00 00 00 00 00 03 |....chosen......|
000000c0 00 00 00 01 00 00 00 3d 00 00 00 00 00 00 00 02 |.......=........|
000000d0 00 00 00 01 61 6c 69 61 73 65 73 00 00 00 00 03 |....aliases.....|
000000e0 00 00 00 07 00 00 00 46 2f 61 75 64 69 6f 00 00 |.......F/audio..|
000000f0 00 00 00 03 00 00 00 07 00 00 00 4c 2f 73 6f 75 |...........L/sou|
00000100 6e 64 00 00 00 00 00 03 00 00 00 05 00 00 00 52 |nd.............R|
00000110 2f 73 6f 63 00 00 00 00 00 00 00 03 00 00 00 12 |/soc............|
00000120 00 00 00 56 2f 73 6f 63 2f 64 6d 61 40 37 65 30 |...V/soc/dma@7e0|
00000130 30 37 30 30 30 00 00 00 00 00 00 03 00 00 00 1a |07000...........|
00000140 00 00 00 5a 2f 73 6f 63 2f 69 6e 74 65 72 72 75 |...Z/soc/interru|
00000150 70 74 2d 63 6f 6e 74 72 6f 6c 6c 65 72 00 00 00 |pt-controller...|
00000160 00 00 00 03 00 00 00 17 00 00 00 5f 2f 73 6f 63 |..........._/soc|
00000170 2f 77 61 74 63 68 64 6f 67 40 37 65 31 30 30 30 |/watchdog@7e1000|
00000180 30 30 00 00 00 00 00 03 00 00 00 12 00 00 00 68 |00.............h|
00000190 2f 73 6f 63 2f 72 6e 67 40 37 65 31 30 34 30 30 |/soc/rng@7e10400|
000001a0 30 00 00 00 00 00 00 03 00 00 00 16 00 00 00 6f |0..............o|
000001b0 2f 73 6f 63 2f 6d 61 69 6c 62 6f 78 40 37 65 30 |/soc/mailbox@7e0|
000001c0 30 62 38 30 30 00 00 00 00 00 00 03 00 00 00 0a |0b800...........|
000001d0 00 00 00 77 2f 73 6f 63 2f 67 70 69 6f 00 00 00 |...w/soc/gpio...|
000001e0 00 00 00 03 00 00 00 13 00 00 00 7c 2f 73 6f 63 |...........|/soc|
000001f0 2f 75 61 72 74 40 37 65 32 30 31 30 30 30 00 00 |/uart@7e201000..|
00000200 00 00 00 03 00 00 00 12 00 00 00 82 2f 73 6f 63 |............/soc|
00000210 2f 69 32 73 40 37 65 32 30 33 30 30 30 00 00 00 |/i2s@7e203000...|
00000220 00 00 00 03 00 00 00 12 00 00 00 86 2f 73 6f 63 |............/soc|
00000230 2f 73 70 69 40 37 65 32 30 34 30 30 30 00 00 00 |/spi@7e204000...|
00000240 00 00 00 03 00 00 00 12 00 00 00 8b 2f 73 6f 63 |............/soc|
00000250 2f 69 32 63 40 37 65 32 30 35 30 30 30 00 00 00 |/i2c@7e205000...|
00000260 00 00 00 03 00 00 00 13 00 00 00 90 2f 73 6f 63 |............/soc|
00000270 2f 75 61 72 74 40 37 65 32 31 35 30 34 30 00 00 |/uart@7e215040..|
00000280 00 00 00 03 00 00 00 12 00 00 00 96 2f 73 6f 63 |............/soc|
00000290 2f 6d 6d 63 40 37 65 33 30 30 30 30 30 00 00 00 |/mmc@7e300000...|
000002a0 00 00 00 03 00 00 00 12 00 00 00 9a 2f 73 6f 63 |............/soc|
000002b0 2f 69 32 63 40 37 65 38 30 34 30 30 30 00 00 00 |/i2c@7e804000...|
000002c0 00 00 00 03 00 00 00 12 00 00 00 9f 2f 73 6f 63 |............/soc|
000002d0 2f 69 32 63 40 37 65 38 30 35 30 30 30 00 00 00 |/i2c@7e805000...|
000002e0 00 00 00 03 00 00 00 12 00 00 00 a4 2f 73 6f 63 |............/soc|
000002f0 2f 75 73 62 40 37 65 39 38 30 30 30 30 00 00 00 |/usb@7e980000...|
00000300 00 00 00 03 00 00 00 0a 00 00 00 a8 2f 73 6f 63 |............/soc|
00000310 2f 6c 65 64 73 00 00 00 00 00 00 03 00 00 00 08 |/leds...........|
00000320 00 00 00 ad 2f 73 6f 63 2f 66 62 00 00 00 00 03 |..../soc/fb.....|
00000330 00 00 00 0b 00 00 00 b0 2f 73 6f 63 2f 76 63 68 |......../soc/vch|
00000340 69 71 00 00 00 00 00 03 00 00 00 0d 00 00 00 b6 |iq..............|
00000350 2f 73 6f 63 2f 74 68 65 72 6d 61 6c 00 00 00 00 |/soc/thermal....|
00000360 00 00 00 03 00 00 00 08 00 00 00 be 2f 63 6c 6f |............/clo|
00000370 63 6b 73 00 00 00 00 02 00 00 00 01 6d 65 6d 6f |cks.........memo|
00000380 72 79 00 00 00 00 00 03 00 00 00 07 00 00 00 c5 |ry..............|
00000390 6d 65 6d 6f 72 79 00 00 00 00 00 03 00 00 00 08 |memory..........|
000003a0 00 00 00 d1 00 00 00 00 00 00 00 00 00 00 00 02 |................|
000003b0 00 00 00 01 61 75 64 69 6f 00 00 00 00 00 00 03 |....audio.......|
000003c0 00 00 00 13 00 00 00 2c 62 72 63 6d 2c 62 63 6d |.......,brcm,bcm|
000003d0 32 38 33 35 2d 61 75 64 69 6f 00 00 00 00 00 03 |2835-audio......|
000003e0 00 00 00 04 00 00 00 d5 00 00 00 08 00 00 00 03 |................|
000003f0 00 00 00 09 00 00 00 e7 64 69 73 61 62 6c 65 64 |........disabled|
00000400 00 00 00 00 00 00 00 03 00 00 00 04 00 00 00 ee |................|
00000410 00 00 00 1b 00 00 00 03 00 00 00 04 00 00 00 f4 |................|
00000420 00 00 00 1b 00 00 00 02 00 00 00 01 73 6f 75 6e |............soun|
00000430 64 00 00 00 00 00 00 02 00 00 00 01 73 6f 63 00 |d...........soc.|
00000440 00 00 00 03 00 00 00 0b 00 00 00 2c 73 69 6d 70 |...........,simp|
00000450 6c 65 2d 62 75 73 00 00 00 00 00 03 00 00 00 04 |le-bus..........|
00000460 00 00 00 00 00 00 00 01 00 00 00 03 00 00 00 04 |................|
00000470 00 00 00 0f 00 00 00 01 00 00 00 03 00 00 00 0c |................|
00000480 00 00 00 fc 7e 00 00 00 3f 00 00 00 01 00 00 00 |....~...?.......|
00000490 00 00 00 01 64 6d 61 40 37 65 30 30 37 30 30 30 |....dma@7e007000|
000004a0 00 00 00 00 00 00 00 03 00 00 00 11 00 00 00 2c |...............,|
000004b0 62 72 63 6d 2c 62 63 6d 32 38 33 35 2d 64 6d 61 |brcm,bcm2835-dma|
000004c0 00 00 00 00 00 00 00 03 00 00 00 08 00 00 00 d1 |................|
000004d0 7e 00 70 00 00 00 0f 00 00 00 00 03 00 00 00 68 |~.p............h|
000004e0 00 00 01 03 00 00 00 01 00 00 00 10 00 00 00 01 |................|
000004f0 00 00 00 11 00 00 00 01 00 00 00 12 00 00 00 01 |................|
00000500 00 00 00 13 00 00 00 01 00 00 00 14 00 00 00 01 |................|
00000510 00 00 00 15 00 00 00 01 00 00 00 16 00 00 00 01 |................|
00000520 00 00 00 17 00 00 00 01 00 00 00 18 00 00 00 01 |................|
00000530 00 00 00 19 00 00 00 01 00 00 00 1a 00 00 00 01 |................|
00000540 00 00 00 1b 00 00 00 01 00 00 00 1c 00 00 00 03 |................|
00000550 00 00 00 04 00 00 01 0e 00 00 00 01 00 00 00 03 |................|
00000560 00 00 00 04 00 00 01 19 00 00 7f 35 00 00 00 03 |...........5....|
00000570 00 00 00 04 00 00 00 ee 00 00 00 06 00 00 00 03 |................|
00000580 00 00 00 04 00 00 00 f4 00 00 00 06 00 00 00 02 |................|
00000590 00 00 00 01 69 6e 74 65 72 72 75 70 74 2d 63 6f |....interrupt-co|
000005a0 6e 74 72 6f 6c 6c 65 72 00 00 00 00 00 00 00 03 |ntroller........|
000005b0 00 00 00 18 00 00 00 2c 62 72 63 6d 2c 62 63 6d |.......,brcm,bcm|
000005c0 32 37 30 38 2d 61 72 6d 63 74 72 6c 2d 69 63 00 |2708-armctrl-ic.|
000005d0 00 00 00 03 00 00 00 08 00 00 00 d1 7e 00 b2 00 |............~...|
000005e0 00 00 02 00 00 00 00 03 00 00 00 00 00 00 01 2f |.............../|
000005f0 00 00 00 03 00 00 00 04 00 00 01 44 00 00 00 02 |...........D....|
00000600 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 01 |................|
00000610 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 01 |................|
00000620 00 00 00 02 00 00 00 01 6d 61 69 6c 62 6f 78 40 |........mailbox@|
00000630 37 65 30 30 62 38 30 30 00 00 00 00 00 00 00 03 |7e00b800........|
00000640 00 00 00 12 00 00 00 2c 62 72 63 6d 2c 62 63 6d |.......,brcm,bcm|
00000650 32 37 30 38 2d 76 63 69 6f 00 00 00 00 00 00 03 |2708-vcio.......|
00000660 00 00 00 08 00 00 00 d1 7e 00 b8 80 00 00 00 40 |........~......@|
00000670 00 00 00 03 00 00 00 08 00 00 01 03 00 00 00 00 |................|
00000680 00 00 00 01 00 00 00 02 00 00 00 01 77 61 74 63 |............watc|
00000690 68 64 6f 67 40 37 65 31 30 30 30 30 30 00 00 00 |hdog@7e100000...|
000006a0 00 00 00 03 00 00 00 14 00 00 00 2c 62 72 63 6d |...........,brcm|
000006b0 2c 62 63 6d 32 38 33 35 2d 70 6d 2d 77 64 74 00 |,bcm2835-pm-wdt.|
000006c0 00 00 00 03 00 00 00 08 00 00 00 d1 7e 10 00 00 |............~...|
000006d0 00 00 00 28 00 00 00 03 00 00 00 09 00 00 00 e7 |...(............|
000006e0 64 69 73 61 62 6c 65 64 00 00 00 00 00 00 00 03 |disabled........|
000006f0 00 00 00 04 00 00 00 ee 00 00 00 1c 00 00 00 03 |................|
00000700 00 00 00 04 00 00 00 f4 00 00 00 1c 00 00 00 02 |................|
00000710 00 00 00 01 72 6e 67 40 37 65 31 30 34 30 30 30 |....rng@7e104000|
00000720 00 00 00 00 00 00 00 03 00 00 00 11 00 00 00 2c |...............,|
00000730 62 72 63 6d 2c 62 63 6d 32 38 33 35 2d 72 6e 67 |brcm,bcm2835-rng|
00000740 00 00 00 00 00 00 00 03 00 00 00 08 00 00 00 d1 |................|
00000750 7e 10 40 00 00 00 00 10 00 00 00 03 00 00 00 09 |~.@.............|
00000760 00 00 00 e7 64 69 73 61 62 6c 65 64 00 00 00 00 |....disabled....|
00000770 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 1d |................|
00000780 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 1d |................|
00000790 00 00 00 02 00 00 00 01 67 70 69 6f 00 00 00 00 |........gpio....|
000007a0 00 00 00 03 00 00 00 12 00 00 00 2c 62 72 63 6d |...........,brcm|
000007b0 2c 62 63 6d 32 38 33 35 2d 67 70 69 6f 00 00 00 |,bcm2835-gpio...|
000007c0 00 00 00 03 00 00 00 08 00 00 00 d1 7e 20 00 00 |............~ ..|
000007d0 00 00 00 b4 00 00 00 03 00 00 00 10 00 00 01 03 |................|
000007e0 00 00 00 02 00 00 00 11 00 00 00 02 00 00 00 12 |................|
000007f0 00 00 00 03 00 00 00 00 00 00 01 55 00 00 00 03 |...........U....|
00000800 00 00 00 04 00 00 01 65 00 00 00 02 00 00 00 03 |.......e........|
00000810 00 00 00 00 00 00 01 2f 00 00 00 03 00 00 00 04 |......./........|
00000820 00 00 01 44 00 00 00 02 00 00 00 03 00 00 00 04 |...D............|
00000830 00 00 00 ee 00 00 00 0c 00 00 00 03 00 00 00 04 |................|
00000840 00 00 00 f4 00 00 00 0c 00 00 00 01 73 70 69 30 |............spi0|
00000850 5f 70 69 6e 73 00 00 00 00 00 00 03 00 00 00 14 |_pins...........|
00000860 00 00 01 71 00 00 00 07 00 00 00 08 00 00 00 09 |...q............|
00000870 00 00 00 0a 00 00 00 0b 00 00 00 03 00 00 00 04 |................|
00000880 00 00 01 7b 00 00 00 04 00 00 00 03 00 00 00 04 |...{............|
00000890 00 00 00 ee 00 00 00 07 00 00 00 03 00 00 00 04 |................|
000008a0 00 00 00 f4 00 00 00 07 00 00 00 02 00 00 00 01 |................|
000008b0 69 32 63 30 00 00 00 00 00 00 00 03 00 00 00 08 |i2c0............|
000008c0 00 00 01 71 00 00 00 00 00 00 00 01 00 00 00 03 |...q............|
000008d0 00 00 00 04 00 00 01 7b 00 00 00 04 00 00 00 03 |.......{........|
000008e0 00 00 00 04 00 00 00 ee 00 00 00 09 00 00 00 03 |................|
000008f0 00 00 00 04 00 00 00 f4 00 00 00 09 00 00 00 02 |................|
00000900 00 00 00 01 69 32 63 31 00 00 00 00 00 00 00 03 |....i2c1........|
00000910 00 00 00 08 00 00 01 71 00 00 00 02 00 00 00 03 |.......q........|
00000920 00 00 00 03 00 00 00 04 00 00 01 7b 00 00 00 04 |...........{....|
00000930 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 0b |................|
00000940 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 0b |................|
00000950 00 00 00 02 00 00 00 01 69 32 73 00 00 00 00 03 |........i2s.....|
00000960 00 00 00 10 00 00 01 71 00 00 00 12 00 00 00 13 |.......q........|
00000970 00 00 00 14 00 00 00 15 00 00 00 03 00 00 00 04 |................|
00000980 00 00 01 7b 00 00 00 04 00 00 00 03 00 00 00 04 |...{............|
00000990 00 00 00 ee 00 00 00 04 00 00 00 03 00 00 00 04 |................|
000009a0 00 00 00 f4 00 00 00 04 00 00 00 02 00 00 00 02 |................|
000009b0 00 00 00 01 75 61 72 74 40 37 65 32 30 31 30 30 |....uart@7e20100|
000009c0 30 00 00 00 00 00 00 03 00 00 00 18 00 00 00 2c |0..............,|
000009d0 61 72 6d 2c 70 6c 30 31 31 00 61 72 6d 2c 70 72 |arm,pl011.arm,pr|
000009e0 69 6d 65 63 65 6c 6c 00 00 00 00 03 00 00 00 08 |imecell.........|
000009f0 00 00 00 d1 7e 20 10 00 00 00 10 00 00 00 00 03 |....~ ..........|
00000a00 00 00 00 08 00 00 01 03 00 00 00 02 00 00 00 19 |................|
00000a10 00 00 00 03 00 00 00 08 00 00 00 be 00 00 00 02 |................|
00000a20 00 00 00 03 00 00 00 03 00 00 00 11 00 00 01 89 |................|
00000a30 75 61 72 74 63 6c 6b 00 61 70 62 5f 70 63 6c 6b |uartclk.apb_pclk|
00000a40 00 00 00 00 00 00 00 03 00 00 00 04 00 00 01 95 |................|
00000a50 00 24 10 11 00 00 00 03 00 00 00 05 00 00 00 e7 |.$..............|
00000a60 6f 6b 61 79 00 00 00 00 00 00 00 03 00 00 00 04 |okay............|
00000a70 00 00 00 ee 00 00 00 12 00 00 00 03 00 00 00 04 |................|
00000a80 00 00 00 f4 00 00 00 12 00 00 00 02 00 00 00 01 |................|
00000a90 69 32 73 40 37 65 32 30 33 30 30 30 00 00 00 00 |i2s@7e203000....|
00000aa0 00 00 00 03 00 00 00 11 00 00 00 2c 62 72 63 6d |...........,brcm|
00000ab0 2c 62 63 6d 32 37 30 38 2d 69 32 73 00 00 00 00 |,bcm2708-i2s....|
00000ac0 00 00 00 03 00 00 00 10 00 00 00 d1 7e 20 30 00 |............~ 0.|
00000ad0 00 00 00 20 7e 10 10 98 00 00 00 02 00 00 00 03 |... ~...........|
00000ae0 00 00 00 06 00 00 01 ac 74 78 00 72 78 00 00 00 |........tx.rx...|
00000af0 00 00 00 03 00 00 00 09 00 00 00 e7 64 69 73 61 |............disa|
00000b00 62 6c 65 64 00 00 00 00 00 00 00 03 00 00 00 04 |bled............|
00000b10 00 00 01 b6 00 00 00 00 00 00 00 03 00 00 00 08 |................|
00000b20 00 00 01 c7 64 65 66 61 75 6c 74 00 00 00 00 03 |....default.....|
00000b30 00 00 00 04 00 00 01 d5 00 00 00 04 00 00 00 03 |................|
00000b40 00 00 00 04 00 00 00 ee 00 00 00 14 00 00 00 03 |................|
00000b50 00 00 00 04 00 00 00 f4 00 00 00 14 00 00 00 02 |................|
00000b60 00 00 00 01 73 70 69 40 37 65 32 30 34 30 30 30 |....spi@7e204000|
00000b70 00 00 00 00 00 00 00 03 00 00 00 11 00 00 00 2c |...............,|
00000b80 62 72 63 6d 2c 62 63 6d 32 38 33 35 2d 73 70 69 |brcm,bcm2835-spi|
00000b90 00 00 00 00 00 00 00 03 00 00 00 08 00 00 00 d1 |................|
00000ba0 7e 20 40 00 00 00 10 00 00 00 00 03 00 00 00 08 |~ @.............|
00000bb0 00 00 01 03 00 00 00 02 00 00 00 16 00 00 00 03 |................|
00000bc0 00 00 00 04 00 00 00 be 00 00 00 05 00 00 00 03 |................|
00000bd0 00 00 00 04 00 00 00 00 00 00 00 01 00 00 00 03 |................|
00000be0 00 00 00 04 00 00 00 0f 00 00 00 00 00 00 00 03 |................|
00000bf0 00 00 00 09 00 00 00 e7 64 69 73 61 62 6c 65 64 |........disabled|
00000c00 00 00 00 00 00 00 00 03 00 00 00 10 00 00 01 df |................|
00000c10 00 00 00 06 00 00 00 06 00 00 00 06 00 00 00 07 |................|
00000c20 00 00 00 03 00 00 00 06 00 00 01 ac 74 78 00 72 |............tx.r|
00000c30 78 00 00 00 00 00 00 03 00 00 00 08 00 00 01 e4 |x...............|
00000c40 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00 08 |................|
00000c50 00 00 01 c7 64 65 66 61 75 6c 74 00 00 00 00 03 |....default.....|
00000c60 00 00 00 04 00 00 01 d5 00 00 00 07 00 00 00 03 |................|
00000c70 00 00 00 04 00 00 00 ee 00 00 00 15 00 00 00 03 |................|
00000c80 00 00 00 04 00 00 00 f4 00 00 00 15 00 00 00 01 |................|
00000c90 73 70 69 64 65 76 40 30 00 00 00 00 00 00 00 03 |spidev@0........|
00000ca0 00 00 00 07 00 00 00 2c 73 70 69 64 65 76 00 00 |.......,spidev..|
00000cb0 00 00 00 03 00 00 00 04 00 00 00 d1 00 00 00 00 |................|
00000cc0 00 00 00 03 00 00 00 04 00 00 00 00 00 00 00 01 |................|
00000cd0 00 00 00 03 00 00 00 04 00 00 00 0f 00 00 00 00 |................|
00000ce0 00 00 00 03 00 00 00 04 00 00 01 ed 00 07 a1 20 |............... |
00000cf0 00 00 00 02 00 00 00 01 73 70 69 64 65 76 40 31 |........spidev@1|
00000d00 00 00 00 00 00 00 00 03 00 00 00 07 00 00 00 2c |...............,|
00000d10 73 70 69 64 65 76 00 00 00 00 00 03 00 00 00 04 |spidev..........|
00000d20 00 00 00 d1 00 00 00 01 00 00 00 03 00 00 00 04 |................|
00000d30 00 00 00 00 00 00 00 01 00 00 00 03 00 00 00 04 |................|
00000d40 00 00 00 0f 00 00 00 00 00 00 00 03 00 00 00 04 |................|
00000d50 00 00 01 ed 00 07 a1 20 00 00 00 02 00 00 00 02 |....... ........|
00000d60 00 00 00 01 69 32 63 40 37 65 32 30 35 30 30 30 |....i2c@7e205000|
00000d70 00 00 00 00 00 00 00 03 00 00 00 11 00 00 00 2c |...............,|
00000d80 62 72 63 6d 2c 62 63 6d 32 37 30 38 2d 69 32 63 |brcm,bcm2708-i2c|
00000d90 00 00 00 00 00 00 00 03 00 00 00 08 00 00 00 d1 |................|
00000da0 7e 20 50 00 00 00 10 00 00 00 00 03 00 00 00 08 |~ P.............|
00000db0 00 00 01 03 00 00 00 02 00 00 00 15 00 00 00 03 |................|
00000dc0 00 00 00 04 00 00 00 be 00 00 00 08 00 00 00 03 |................|
00000dd0 00 00 00 04 00 00 00 00 00 00 00 01 00 00 00 03 |................|
00000de0 00 00 00 04 00 00 00 0f 00 00 00 00 00 00 00 03 |................|
00000df0 00 00 00 09 00 00 00 e7 64 69 73 61 62 6c 65 64 |........disabled|
00000e00 00 00 00 00 00 00 00 03 00 00 00 08 00 00 01 c7 |................|
00000e10 64 65 66 61 75 6c 74 00 00 00 00 03 00 00 00 04 |default.........|
00000e20 00 00 01 d5 00 00 00 09 00 00 00 03 00 00 00 04 |................|
00000e30 00 00 01 ff 00 01 86 a0 00 00 00 03 00 00 00 04 |................|
00000e40 00 00 00 ee 00 00 00 16 00 00 00 03 00 00 00 04 |................|
00000e50 00 00 00 f4 00 00 00 16 00 00 00 02 00 00 00 01 |................|
00000e60 75 61 72 74 40 37 65 32 31 35 30 34 30 00 00 00 |uart@7e215040...|
00000e70 00 00 00 03 00 00 00 1e 00 00 00 2c 62 72 63 6d |...........,brcm|
00000e80 2c 62 63 6d 32 38 33 35 2d 61 75 78 2d 75 61 72 |,bcm2835-aux-uar|
00000e90 74 00 6e 73 31 36 35 35 30 00 00 00 00 00 00 03 |t.ns16550.......|
00000ea0 00 00 00 08 00 00 00 d1 7e 21 50 40 00 00 00 40 |........~!P@...@|
00000eb0 00 00 00 03 00 00 00 08 00 00 01 03 00 00 00 01 |................|
00000ec0 00 00 00 1d 00 00 00 03 00 00 00 04 00 00 01 ff |................|
00000ed0 1d cd 65 00 00 00 00 03 00 00 00 04 00 00 02 0f |..e.............|
00000ee0 00 00 00 02 00 00 00 03 00 00 00 00 00 00 02 19 |................|
00000ef0 00 00 00 03 00 00 00 09 00 00 00 e7 64 69 73 61 |............disa|
00000f00 62 6c 65 64 00 00 00 00 00 00 00 03 00 00 00 04 |bled............|
00000f10 00 00 00 ee 00 00 00 13 00 00 00 03 00 00 00 04 |................|
00000f20 00 00 00 f4 00 00 00 13 00 00 00 02 00 00 00 01 |................|
00000f30 6d 6d 63 40 37 65 33 30 30 30 30 30 00 00 00 00 |mmc@7e300000....|
00000f40 00 00 00 03 00 00 00 11 00 00 00 2c 62 72 63 6d |...........,brcm|
00000f50 2c 62 63 6d 32 38 33 35 2d 6d 6d 63 00 00 00 00 |,bcm2835-mmc....|
00000f60 00 00 00 03 00 00 00 08 00 00 00 d1 7e 30 00 00 |............~0..|
00000f70 00 00 01 00 00 00 00 03 00 00 00 08 00 00 01 03 |................|
00000f80 00 00 00 02 00 00 00 1e 00 00 00 03 00 00 00 04 |................|
00000f90 00 00 00 be 00 00 00 0a 00 00 00 03 00 00 00 10 |................|
00000fa0 00 00 01 df 00 00 00 06 00 00 00 0b 00 00 00 06 |................|
00000fb0 00 00 00 0b 00 00 00 03 00 00 00 06 00 00 01 ac |................|
00000fc0 74 78 00 72 78 00 00 00 00 00 00 03 00 00 00 05 |tx.rx...........|
00000fd0 00 00 00 e7 6f 6b 61 79 00 00 00 00 00 00 00 03 |....okay........|
00000fe0 00 00 00 04 00 00 02 2a 00 00 00 04 00 00 00 02 |.......*........|
00000ff0 00 00 00 01 69 32 63 40 37 65 38 30 34 30 30 30 |....i2c@7e804000|
00001000 00 00 00 00 00 00 00 03 00 00 00 11 00 00 00 2c |...............,|
00001010 62 72 63 6d 2c 62 63 6d 32 37 30 38 2d 69 32 63 |brcm,bcm2708-i2c|
00001020 00 00 00 00 00 00 00 03 00 00 00 08 00 00 00 d1 |................|
00001030 7e 80 40 00 00 00 10 00 00 00 00 03 00 00 00 08 |~.@.............|
00001040 00 00 01 03 00 00 00 02 00 00 00 15 00 00 00 03 |................|
00001050 00 00 00 04 00 00 00 be 00 00 00 08 00 00 00 03 |................|
00001060 00 00 00 04 00 00 00 00 00 00 00 01 00 00 00 03 |................|
00001070 00 00 00 04 00 00 00 0f 00 00 00 00 00 00 00 03 |................|
00001080 00 00 00 09 00 00 00 e7 64 69 73 61 62 6c 65 64 |........disabled|
00001090 00 00 00 00 00 00 00 03 00 00 00 08 00 00 01 c7 |................|
000010a0 64 65 66 61 75 6c 74 00 00 00 00 03 00 00 00 04 |default.........|
000010b0 00 00 01 d5 00 00 00 0b 00 00 00 03 00 00 00 04 |................|
000010c0 00 00 01 ff 00 01 86 a0 00 00 00 03 00 00 00 04 |................|
000010d0 00 00 00 ee 00 00 00 17 00 00 00 03 00 00 00 04 |................|
000010e0 00 00 00 f4 00 00 00 17 00 00 00 02 00 00 00 01 |................|
000010f0 69 32 63 40 37 65 38 30 35 30 30 30 00 00 00 00 |i2c@7e805000....|
00001100 00 00 00 03 00 00 00 11 00 00 00 2c 62 72 63 6d |...........,brcm|
00001110 2c 62 63 6d 32 37 30 38 2d 69 32 63 00 00 00 00 |,bcm2708-i2c....|
00001120 00 00 00 03 00 00 00 08 00 00 00 d1 7e 80 50 00 |............~.P.|
00001130 00 00 10 00 00 00 00 03 00 00 00 08 00 00 01 03 |................|
00001140 00 00 00 02 00 00 00 15 00 00 00 03 00 00 00 04 |................|
00001150 00 00 00 be 00 00 00 08 00 00 00 03 00 00 00 04 |................|
00001160 00 00 00 00 00 00 00 01 00 00 00 03 00 00 00 04 |................|
00001170 00 00 00 0f 00 00 00 00 00 00 00 03 00 00 00 09 |................|
00001180 00 00 00 e7 64 69 73 61 62 6c 65 64 00 00 00 00 |....disabled....|
00001190 00 00 00 03 00 00 00 04 00 00 01 ff 00 01 86 a0 |................|
000011a0 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 18 |................|
000011b0 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 18 |................|
000011c0 00 00 00 02 00 00 00 01 75 73 62 40 37 65 39 38 |........usb@7e98|
000011d0 30 30 30 30 00 00 00 00 00 00 00 03 00 00 00 11 |0000............|
000011e0 00 00 00 2c 62 72 63 6d 2c 62 63 6d 32 37 30 38 |...,brcm,bcm2708|
000011f0 2d 75 73 62 00 00 00 00 00 00 00 03 00 00 00 10 |-usb............|
00001200 00 00 00 d1 7e 98 00 00 00 01 00 00 7e 00 60 00 |....~.......~.`.|
00001210 00 00 10 00 00 00 00 03 00 00 00 10 00 00 01 03 |................|
00001220 00 00 00 02 00 00 00 00 00 00 00 01 00 00 00 09 |................|
00001230 00 00 00 02 00 00 00 01 6c 65 64 73 00 00 00 00 |........leds....|
00001240 00 00 00 03 00 00 00 0a 00 00 00 2c 67 70 69 6f |...........,gpio|
00001250 2d 6c 65 64 73 00 00 00 00 00 00 01 61 63 74 00 |-leds.......act.|
00001260 00 00 00 03 00 00 00 05 00 00 02 34 6c 65 64 30 |...........4led0|
00001270 00 00 00 00 00 00 00 03 00 00 00 05 00 00 02 3a |...............:|
00001280 6d 6d 63 30 00 00 00 00 00 00 00 03 00 00 00 0c |mmc0............|
00001290 00 00 01 e7 00 00 00 0c 00 00 00 2f 00 00 00 00 |.........../....|
000012a0 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 19 |................|
000012b0 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 19 |................|
000012c0 00 00 00 02 00 00 00 01 70 77 72 00 00 00 00 03 |........pwr.....|
000012d0 00 00 00 05 00 00 02 34 6c 65 64 31 00 00 00 00 |.......4led1....|
000012e0 00 00 00 03 00 00 00 06 00 00 02 3a 69 6e 70 75 |...........:inpu|
000012f0 74 00 00 00 00 00 00 03 00 00 00 0c 00 00 01 e7 |t...............|
00001300 00 00 00 0c 00 00 00 23 00 00 00 00 00 00 00 03 |.......#........|
00001310 00 00 00 04 00 00 00 ee 00 00 00 1a 00 00 00 03 |................|
00001320 00 00 00 04 00 00 00 f4 00 00 00 1a 00 00 00 02 |................|
00001330 00 00 00 02 00 00 00 01 66 62 00 00 00 00 00 03 |........fb......|
00001340 00 00 00 10 00 00 00 2c 62 72 63 6d 2c 62 63 6d |.......,brcm,bcm|
00001350 32 37 30 38 2d 66 62 00 00 00 00 03 00 00 00 05 |2708-fb.........|
00001360 00 00 00 e7 6f 6b 61 79 00 00 00 00 00 00 00 02 |....okay........|
00001370 00 00 00 01 76 63 68 69 71 00 00 00 00 00 00 03 |....vchiq.......|
00001380 00 00 00 13 00 00 00 2c 62 72 63 6d 2c 62 63 6d |.......,brcm,bcm|
00001390 32 38 33 35 2d 76 63 68 69 71 00 00 00 00 00 03 |2835-vchiq......|
000013a0 00 00 00 08 00 00 00 d1 7e 00 b8 40 00 00 00 0f |........~..@....|
000013b0 00 00 00 03 00 00 00 08 00 00 01 03 00 00 00 00 |................|
000013c0 00 00 00 02 00 00 00 03 00 00 00 04 00 00 02 50 |...............P|
000013d0 00 00 00 20 00 00 00 03 00 00 00 04 00 00 00 ee |... ............|
000013e0 00 00 00 0d 00 00 00 03 00 00 00 04 00 00 00 f4 |................|
000013f0 00 00 00 0d 00 00 00 02 00 00 00 01 74 68 65 72 |............ther|
00001400 6d 61 6c 00 00 00 00 03 00 00 00 15 00 00 00 2c |mal............,|
00001410 62 72 63 6d 2c 62 63 6d 32 38 33 35 2d 74 68 65 |brcm,bcm2835-the|
00001420 72 6d 61 6c 00 00 00 00 00 00 00 02 00 00 00 01 |rmal............|
00001430 61 72 6d 2d 70 6d 75 00 00 00 00 03 00 00 00 12 |arm-pmu.........|
00001440 00 00 00 2c 61 72 6d 2c 63 6f 72 74 65 78 2d 61 |...,arm,cortex-a|
00001450 37 2d 70 6d 75 00 00 00 00 00 00 03 00 00 00 08 |7-pmu...........|
00001460 00 00 01 03 00 00 00 03 00 00 00 09 00 00 00 02 |................|
00001470 00 00 00 02 00 00 00 01 63 6c 6f 63 6b 73 00 00 |........clocks..|
00001480 00 00 00 03 00 00 00 0b 00 00 00 2c 73 69 6d 70 |...........,simp|
00001490 6c 65 2d 62 75 73 00 00 00 00 00 03 00 00 00 04 |le-bus..........|
000014a0 00 00 00 00 00 00 00 01 00 00 00 03 00 00 00 04 |................|
000014b0 00 00 00 0f 00 00 00 00 00 00 00 01 63 6c 6f 63 |............cloc|
000014c0 6b 40 30 00 00 00 00 03 00 00 00 0c 00 00 00 2c |k@0............,|
000014d0 66 69 78 65 64 2d 63 6c 6f 63 6b 00 00 00 00 03 |fixed-clock.....|
000014e0 00 00 00 04 00 00 00 d1 00 00 00 00 00 00 00 03 |................|
000014f0 00 00 00 04 00 00 02 60 00 00 00 00 00 00 00 03 |.......`........|
00001500 00 00 00 04 00 00 02 6d 6d 6d 63 00 00 00 00 03 |.......mmmc.....|
00001510 00 00 00 04 00 00 01 ff 0e e6 b2 80 00 00 00 03 |................|
00001520 00 00 00 04 00 00 00 ee 00 00 00 0a 00 00 00 03 |................|
00001530 00 00 00 04 00 00 00 f4 00 00 00 0a 00 00 00 02 |................|
00001540 00 00 00 01 63 6c 6f 63 6b 40 31 00 00 00 00 03 |....clock@1.....|
00001550 00 00 00 0c 00 00 00 2c 66 69 78 65 64 2d 63 6c |.......,fixed-cl|
00001560 6f 63 6b 00 00 00 00 03 00 00 00 04 00 00 00 d1 |ock.............|
00001570 00 00 00 01 00 00 00 03 00 00 00 04 00 00 02 60 |...............`|
00001580 00 00 00 00 00 00 00 03 00 00 00 04 00 00 02 6d |...............m|
00001590 69 32 63 00 00 00 00 03 00 00 00 04 00 00 01 ff |i2c.............|
000015a0 0e e6 b2 80 00 00 00 03 00 00 00 04 00 00 00 ee |................|
000015b0 00 00 00 08 00 00 00 03 00 00 00 04 00 00 00 f4 |................|
000015c0 00 00 00 08 00 00 00 02 00 00 00 01 63 6c 6f 63 |............cloc|
000015d0 6b 40 32 00 00 00 00 03 00 00 00 0c 00 00 00 2c |k@2............,|
000015e0 66 69 78 65 64 2d 63 6c 6f 63 6b 00 00 00 00 03 |fixed-clock.....|
000015f0 00 00 00 04 00 00 00 d1 00 00 00 02 00 00 00 03 |................|
00001600 00 00 00 04 00 00 02 60 00 00 00 00 00 00 00 03 |.......`........|
00001610 00 00 00 05 00 00 02 6d 63 6f 72 65 00 00 00 00 |.......mcore....|
00001620 00 00 00 03 00 00 00 04 00 00 01 ff 0e e6 b2 80 |................|
00001630 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 05 |................|
00001640 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 05 |................|
00001650 00 00 00 02 00 00 00 01 63 6c 6f 63 6b 40 33 00 |........clock@3.|
00001660 00 00 00 03 00 00 00 0c 00 00 00 2c 66 69 78 65 |...........,fixe|
00001670 64 2d 63 6c 6f 63 6b 00 00 00 00 03 00 00 00 04 |d-clock.........|
00001680 00 00 00 d1 00 00 00 03 00 00 00 03 00 00 00 04 |................|
00001690 00 00 02 60 00 00 00 00 00 00 00 03 00 00 00 0b |...`............|
000016a0 00 00 02 6d 75 61 72 74 30 5f 70 63 6c 6b 00 00 |...muart0_pclk..|
000016b0 00 00 00 03 00 00 00 04 00 00 01 ff 00 2d c6 c0 |.............-..|
000016c0 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 02 |................|
000016d0 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 02 |................|
000016e0 00 00 00 02 00 00 00 01 63 6c 6f 63 6b 40 34 00 |........clock@4.|
000016f0 00 00 00 03 00 00 00 0c 00 00 00 2c 66 69 78 65 |...........,fixe|
00001700 64 2d 63 6c 6f 63 6b 00 00 00 00 03 00 00 00 04 |d-clock.........|
00001710 00 00 00 d1 00 00 00 04 00 00 00 03 00 00 00 04 |................|
00001720 00 00 02 60 00 00 00 00 00 00 00 03 00 00 00 09 |...`............|
00001730 00 00 02 6d 61 70 62 5f 70 63 6c 6b 00 00 00 00 |...mapb_pclk....|
00001740 00 00 00 03 00 00 00 04 00 00 01 ff 07 82 9b 80 |................|
00001750 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 03 |................|
00001760 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 03 |................|
00001770 00 00 00 02 00 00 00 02 00 00 00 01 5f 5f 6f 76 |............__ov|
00001780 65 72 72 69 64 65 73 5f 5f 00 00 00 00 00 00 03 |errides__.......|
00001790 00 00 00 16 00 00 02 80 00 00 00 0d 63 61 63 68 |............cach|
000017a0 65 2d 6c 69 6e 65 2d 73 69 7a 65 3a 30 00 00 00 |e-line-size:0...|
000017b0 00 00 00 03 00 00 00 58 00 00 02 90 00 00 00 0e |.......X........|
000017c0 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a |clock-frequency:|
000017d0 30 00 00 00 00 0f 63 6c 6f 63 6b 2d 66 72 65 71 |0.....clock-freq|
000017e0 75 65 6e 63 79 3a 30 00 00 00 00 10 63 6c 6f 63 |uency:0.....cloc|
000017f0 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00 00 00 |k-frequency:0...|
00001800 00 11 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 |..clock-frequenc|
00001810 79 3a 30 00 00 00 00 03 00 00 00 0b 00 00 00 7c |y:0............||
00001820 00 00 00 12 73 74 61 74 75 73 00 00 00 00 00 03 |....status......|
00001830 00 00 00 16 00 00 02 99 00 00 00 02 63 6c 6f 63 |............cloc|
00001840 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00 00 00 |k-frequency:0...|
00001850 00 00 00 03 00 00 00 16 00 00 02 a7 00 00 00 13 |................|
00001860 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a |clock-frequency:|
00001870 30 00 00 00 00 00 00 03 00 00 00 0b 00 00 00 82 |0...............|
00001880 00 00 00 14 73 74 61 74 75 73 00 00 00 00 00 03 |....status......|
00001890 00 00 00 0b 00 00 02 b5 00 00 00 15 73 74 61 74 |............stat|
000018a0 75 73 00 00 00 00 00 03 00 00 00 0b 00 00 00 8b |us..............|
000018b0 00 00 00 16 73 74 61 74 75 73 00 00 00 00 00 03 |....status......|
000018c0 00 00 00 0b 00 00 00 9a 00 00 00 17 73 74 61 74 |............stat|
000018d0 75 73 00 00 00 00 00 03 00 00 00 0b 00 00 02 b9 |us..............|
000018e0 00 00 00 18 73 74 61 74 75 73 00 00 00 00 00 03 |....status......|
000018f0 00 00 00 16 00 00 02 cf 00 00 00 16 63 6c 6f 63 |............cloc|
00001900 6b 2d 66 72 65 71 75 65 6e 63 79 3a 30 00 00 00 |k-frequency:0...|
00001910 00 00 00 03 00 00 00 16 00 00 02 dd 00 00 00 17 |................|
00001920 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e 63 79 3a |clock-frequency:|
00001930 30 00 00 00 00 00 00 03 00 00 00 16 00 00 02 eb |0...............|
00001940 00 00 00 18 63 6c 6f 63 6b 2d 66 72 65 71 75 65 |....clock-freque|
00001950 6e 63 79 3a 30 00 00 00 00 00 00 03 00 00 00 16 |ncy:0...........|
00001960 00 00 02 f9 00 00 00 05 63 6c 6f 63 6b 2d 66 72 |........clock-fr|
00001970 65 71 75 65 6e 63 79 3a 30 00 00 00 00 00 00 03 |equency:0.......|
00001980 00 00 00 0c 00 00 03 03 00 00 00 19 67 70 69 6f |............gpio|
00001990 73 3a 34 00 00 00 00 03 00 00 00 0c 00 00 03 10 |s:4.............|
000019a0 00 00 00 19 67 70 69 6f 73 3a 38 00 00 00 00 03 |....gpios:8.....|
000019b0 00 00 00 1a 00 00 03 22 00 00 00 19 6c 69 6e 75 |......."....linu|
000019c0 78 2c 64 65 66 61 75 6c 74 2d 74 72 69 67 67 65 |x,default-trigge|
000019d0 72 00 00 00 00 00 00 03 00 00 00 0c 00 00 03 32 |r..............2|
000019e0 00 00 00 1a 67 70 69 6f 73 3a 34 00 00 00 00 03 |....gpios:4.....|
000019f0 00 00 00 0c 00 00 03 3f 00 00 00 1a 67 70 69 6f |.......?....gpio|
00001a00 73 3a 38 00 00 00 00 03 00 00 00 1a 00 00 03 51 |s:8............Q|
00001a10 00 00 00 1a 6c 69 6e 75 78 2c 64 65 66 61 75 6c |....linux,defaul|
00001a20 74 2d 74 72 69 67 67 65 72 00 00 00 00 00 00 03 |t-trigger.......|
00001a30 00 00 00 0b 00 00 00 46 00 00 00 1b 73 74 61 74 |.......F....stat|
00001a40 75 73 00 00 00 00 00 03 00 00 00 0b 00 00 00 5f |us............._|
00001a50 00 00 00 1c 73 74 61 74 75 73 00 00 00 00 00 03 |....status......|
00001a60 00 00 00 0b 00 00 00 68 00 00 00 1d 73 74 61 74 |.......h....stat|
00001a70 75 73 00 00 00 00 00 02 00 00 00 01 74 69 6d 65 |us..........time|
00001a80 72 00 00 00 00 00 00 03 00 00 00 10 00 00 00 2c |r..............,|
00001a90 61 72 6d 2c 61 72 6d 76 37 2d 74 69 6d 65 72 00 |arm,armv7-timer.|
00001aa0 00 00 00 03 00 00 00 04 00 00 01 ff 01 24 f8 00 |.............$..|
00001ab0 00 00 00 03 00 00 00 20 00 00 01 03 00 00 00 03 |....... ........|
00001ac0 00 00 00 00 00 00 00 03 00 00 00 01 00 00 00 03 |................|
00001ad0 00 00 00 03 00 00 00 03 00 00 00 02 00 00 00 03 |................|
00001ae0 00 00 00 00 00 00 03 61 00 00 00 02 00 00 00 01 |.......a........|
00001af0 63 70 75 73 00 00 00 00 00 00 00 03 00 00 00 04 |cpus............|
00001b00 00 00 00 00 00 00 00 01 00 00 00 03 00 00 00 04 |................|
00001b10 00 00 00 0f 00 00 00 00 00 00 00 01 63 70 75 40 |............cpu@|
00001b20 30 00 00 00 00 00 00 03 00 00 00 04 00 00 00 c5 |0...............|
00001b30 63 70 75 00 00 00 00 03 00 00 00 0e 00 00 00 2c |cpu............,|
00001b40 61 72 6d 2c 63 6f 72 74 65 78 2d 61 37 00 00 00 |arm,cortex-a7...|
00001b50 00 00 00 03 00 00 00 04 00 00 00 d1 00 00 0f 00 |................|
00001b60 00 00 00 03 00 00 00 04 00 00 01 ff 2f af 08 00 |............/...|
00001b70 00 00 00 03 00 00 00 04 00 00 00 ee 00 00 00 0e |................|
00001b80 00 00 00 03 00 00 00 04 00 00 00 f4 00 00 00 0e |................|
00001b90 00 00 00 02 00 00 00 01 63 70 75 40 31 00 00 00 |........cpu@1...|
00001ba0 00 00 00 03 00 00 00 04 00 00 00 c5 63 70 75 00 |............cpu.|
00001bb0 00 00 00 03 00 00 00 0e 00 00 00 2c 61 72 6d 2c |...........,arm,|
00001bc0 63 6f 72 74 65 78 2d 61 37 00 00 00 00 00 00 03 |cortex-a7.......|
00001bd0 00 00 00 04 00 00 00 d1 00 00 0f 01 00 00 00 03 |................|
00001be0 00 00 00 04 00 00 01 ff 2f af 08 00 00 00 00 03 |......../.......|
00001bf0 00 00 00 04 00 00 00 ee 00 00 00 0f 00 00 00 03 |................|
00001c00 00 00 00 04 00 00 00 f4 00 00 00 0f 00 00 00 02 |................|
00001c10 00 00 00 01 63 70 75 40 32 00 00 00 00 00 00 03 |....cpu@2.......|
00001c20 00 00 00 04 00 00 00 c5 63 70 75 00 00 00 00 03 |........cpu.....|
00001c30 00 00 00 0e 00 00 00 2c 61 72 6d 2c 63 6f 72 74 |.......,arm,cort|
00001c40 65 78 2d 61 37 00 00 00 00 00 00 03 00 00 00 04 |ex-a7...........|
00001c50 00 00 00 d1 00 00 0f 02 00 00 00 03 00 00 00 04 |................|
00001c60 00 00 01 ff 2f af 08 00 00 00 00 03 00 00 00 04 |..../...........|
00001c70 00 00 00 ee 00 00 00 10 00 00 00 03 00 00 00 04 |................|
00001c80 00 00 00 f4 00 00 00 10 00 00 00 02 00 00 00 01 |................|
00001c90 63 70 75 40 33 00 00 00 00 00 00 03 00 00 00 04 |cpu@3...........|
00001ca0 00 00 00 c5 63 70 75 00 00 00 00 03 00 00 00 0e |....cpu.........|
00001cb0 00 00 00 2c 61 72 6d 2c 63 6f 72 74 65 78 2d 61 |...,arm,cortex-a|
00001cc0 37 00 00 00 00 00 00 03 00 00 00 04 00 00 00 d1 |7...............|
00001cd0 00 00 0f 03 00 00 00 03 00 00 00 04 00 00 01 ff |................|
00001ce0 2f af 08 00 00 00 00 03 00 00 00 04 00 00 00 ee |/...............|
00001cf0 00 00 00 11 00 00 00 03 00 00 00 04 00 00 00 f4 |................|
00001d00 00 00 00 11 00 00 00 02 00 00 00 02 00 00 00 02 |................|
00001d10 00 00 00 09 23 61 64 64 72 65 73 73 2d 63 65 6c |....#address-cel|
00001d20 6c 73 00 23 73 69 7a 65 2d 63 65 6c 6c 73 00 69 |ls.#size-cells.i|
00001d30 6e 74 65 72 72 75 70 74 2d 70 61 72 65 6e 74 00 |nterrupt-parent.|
00001d40 63 6f 6d 70 61 74 69 62 6c 65 00 6d 6f 64 65 6c |compatible.model|
00001d50 00 62 6f 6f 74 61 72 67 73 00 61 75 64 69 6f 00 |.bootargs.audio.|
00001d60 73 6f 75 6e 64 00 73 6f 63 00 64 6d 61 00 69 6e |sound.soc.dma.in|
00001d70 74 63 00 77 61 74 63 68 64 6f 67 00 72 61 6e 64 |tc.watchdog.rand|
00001d80 6f 6d 00 6d 61 69 6c 62 6f 78 00 67 70 69 6f 00 |om.mailbox.gpio.|
00001d90 75 61 72 74 30 00 69 32 73 00 73 70 69 30 00 69 |uart0.i2s.spi0.i|
00001da0 32 63 30 00 75 61 72 74 31 00 6d 6d 63 00 69 32 |2c0.uart1.mmc.i2|
00001db0 63 31 00 69 32 63 32 00 75 73 62 00 6c 65 64 73 |c1.i2c2.usb.leds|
00001dc0 00 66 62 00 76 63 68 69 71 00 74 68 65 72 6d 61 |.fb.vchiq.therma|
00001dd0 6c 00 63 6c 6f 63 6b 73 00 64 65 76 69 63 65 5f |l.clocks.device_|
00001de0 74 79 70 65 00 72 65 67 00 62 72 63 6d 2c 70 77 |type.reg.brcm,pw|
00001df0 6d 2d 63 68 61 6e 6e 65 6c 73 00 73 74 61 74 75 |m-channels.statu|
00001e00 73 00 6c 69 6e 75 78 2c 70 68 61 6e 64 6c 65 00 |s.linux,phandle.|
00001e10 72 61 6e 67 65 73 00 69 6e 74 65 72 72 75 70 74 |ranges.interrupt|
00001e20 73 00 23 64 6d 61 2d 63 65 6c 6c 73 00 62 72 63 |s.#dma-cells.brc|
00001e30 6d 2c 64 6d 61 2d 63 68 61 6e 6e 65 6c 2d 6d 61 |m,dma-channel-ma|
00001e40 73 6b 00 69 6e 74 65 72 72 75 70 74 2d 63 6f 6e |sk.interrupt-con|
00001e50 74 72 6f 6c 6c 65 72 00 23 69 6e 74 65 72 72 75 |troller.#interru|
00001e60 70 74 2d 63 65 6c 6c 73 00 67 70 69 6f 2d 63 6f |pt-cells.gpio-co|
00001e70 6e 74 72 6f 6c 6c 65 72 00 23 67 70 69 6f 2d 63 |ntroller.#gpio-c|
00001e80 65 6c 6c 73 00 62 72 63 6d 2c 70 69 6e 73 00 62 |ells.brcm,pins.b|
00001e90 72 63 6d 2c 66 75 6e 63 74 69 6f 6e 00 63 6c 6f |rcm,function.clo|
00001ea0 63 6b 2d 6e 61 6d 65 73 00 61 72 6d 2c 70 72 69 |ck-names.arm,pri|
00001eb0 6d 65 63 65 6c 6c 2d 70 65 72 69 70 68 69 64 00 |mecell-periphid.|
00001ec0 64 6d 61 2d 6e 61 6d 65 73 00 23 73 6f 75 6e 64 |dma-names.#sound|
00001ed0 2d 64 61 69 2d 63 65 6c 6c 73 00 70 69 6e 63 74 |-dai-cells.pinct|
00001ee0 72 6c 2d 6e 61 6d 65 73 00 70 69 6e 63 74 72 6c |rl-names.pinctrl|
00001ef0 2d 30 00 64 6d 61 73 00 63 73 2d 67 70 69 6f 73 |-0.dmas.cs-gpios|
00001f00 00 73 70 69 2d 6d 61 78 2d 66 72 65 71 75 65 6e |.spi-max-frequen|
00001f10 63 79 00 63 6c 6f 63 6b 2d 66 72 65 71 75 65 6e |cy.clock-frequen|
00001f20 63 79 00 72 65 67 2d 73 68 69 66 74 00 6e 6f 2d |cy.reg-shift.no-|
00001f30 6c 6f 6f 70 62 61 63 6b 2d 74 65 73 74 00 62 75 |loopback-test.bu|
00001f40 73 2d 77 69 64 74 68 00 6c 61 62 65 6c 00 6c 69 |s-width.label.li|
00001f50 6e 75 78 2c 64 65 66 61 75 6c 74 2d 74 72 69 67 |nux,default-trig|
00001f60 67 65 72 00 63 61 63 68 65 2d 6c 69 6e 65 2d 73 |ger.cache-line-s|
00001f70 69 7a 65 00 23 63 6c 6f 63 6b 2d 63 65 6c 6c 73 |ize.#clock-cells|
00001f80 00 63 6c 6f 63 6b 2d 6f 75 74 70 75 74 2d 6e 61 |.clock-output-na|
00001f90 6d 65 73 00 63 61 63 68 65 5f 6c 69 6e 65 5f 73 |mes.cache_line_s|
00001fa0 69 7a 65 00 61 72 6d 5f 66 72 65 71 00 75 61 72 |ize.arm_freq.uar|
00001fb0 74 30 5f 63 6c 6b 72 61 74 65 00 75 61 72 74 31 |t0_clkrate.uart1|
00001fc0 5f 63 6c 6b 72 61 74 65 00 73 70 69 00 69 32 63 |_clkrate.spi.i2c|
00001fd0 32 5f 69 6b 6e 6f 77 77 68 61 74 69 6d 64 6f 69 |2_iknowwhatimdoi|
00001fe0 6e 67 00 69 32 63 30 5f 62 61 75 64 72 61 74 65 |ng.i2c0_baudrate|
00001ff0 00 69 32 63 31 5f 62 61 75 64 72 61 74 65 00 69 |.i2c1_baudrate.i|
00002000 32 63 32 5f 62 61 75 64 72 61 74 65 00 63 6f 72 |2c2_baudrate.cor|
00002010 65 5f 66 72 65 71 00 61 63 74 5f 6c 65 64 5f 67 |e_freq.act_led_g|
00002020 70 69 6f 00 61 63 74 5f 6c 65 64 5f 61 63 74 69 |pio.act_led_acti|
00002030 76 65 6c 6f 77 00 61 63 74 5f 6c 65 64 5f 74 72 |velow.act_led_tr|
00002040 69 67 67 65 72 00 70 77 72 5f 6c 65 64 5f 67 70 |igger.pwr_led_gp|
00002050 69 6f 00 70 77 72 5f 6c 65 64 5f 61 63 74 69 76 |io.pwr_led_activ|
00002060 65 6c 6f 77 00 70 77 72 5f 6c 65 64 5f 74 72 69 |elow.pwr_led_tri|
00002070 67 67 65 72 00 61 6c 77 61 79 73 2d 6f 6e 00 |gger.always-on.|
참고
- DTB – 구조 | 문c
- DTB (fdt API) | 문c
- DTB (of API) | 문c
DTB – 구조
DTB(Device Tree Blob) 구조
- FDT(Flattened Device Tree)로도 불린다.
- 4바이트 단위로 정렬되어 저장된다.
- 저장되는 포맷은 빅엔디안 구조를 사용한다.
- cpu는 DTB를 읽어 cpu 엔디안에 맞춰 엔디안 변환을 하여 사용해야 한다.
- 처음 4바이트에는 DTB magic 넘버인 0xd00dfeed 값이 들어있다.
- 이 값을 읽어서 엔디안 변환이 필요함을 알아낼 수도 있다.
- DTB는 커널에서 읽어들인 후 꼭 필요한 속성 값을 먼저(early) 참고하여 사용한다. 그런 후 slab 메모리 관리자가 초기화된 후 object 형태로 변환(unflatten 과정)하여 사용한다.
DTB 덤프 분석
현재 사용중인 DTB 확인
DTB(FDT)
- hexdump /sys/firmware/fdt -C
OF(노드들)
- 커널에서 사용 중인 디바이스 트리 노드
- unflatten되어 하이라키 구조로 표현된 디바이스 트리 노드 object
$ ls /sys/firmware/devicetree/base -la total 0 -r--r--r-- 1 root root 4 Jun 25 13:57 #address-cells -r--r--r-- 1 root root 4 Jun 25 13:57 #size-cells drwxr-xr-x 52 root root 0 Jun 25 13:58 . drwxr-xr-x 3 root root 0 Jun 25 13:47 .. drwxr-xr-x 2 root root 0 Jun 25 13:57 apb-pclk drwxr-xr-x 2 root root 0 Jun 25 13:57 chosen -r--r--r-- 1 root root 17 Jun 25 13:57 compatible drwxr-xr-x 4 root root 0 Jun 25 13:57 cpus drwxr-xr-x 2 root root 0 Jun 25 13:57 flash@0 drwxr-xr-x 2 root root 0 Jun 25 13:57 foo4 drwxr-xr-x 2 root root 0 Jun 25 13:57 fw-cfg@9020000 drwxr-xr-x 2 root root 0 Jun 25 13:57 gpio drwxr-xr-x 3 root root 0 Jun 25 13:57 gpio-keys drwxr-xr-x 3 root root 0 Jun 25 13:57 intc -r--r--r-- 1 root root 4 Jun 25 13:57 interrupt-parent drwxr-xr-x 2 root root 0 Jun 25 13:57 memory -r--r--r-- 1 root root 1 Jun 25 13:57 name drwxr-xr-x 2 root root 0 Jun 25 13:57 pcie@10000000 drwxr-xr-x 2 root root 0 Jun 25 13:57 pl011@9000000 drwxr-xr-x 2 root root 0 Jun 25 13:57 pl031@9010000 drwxr-xr-x 2 root root 0 Jun 25 13:57 pl061@9030000 drwxr-xr-x 2 root root 0 Jun 25 13:57 platform@c000000 drwxr-xr-x 2 root root 0 Jun 25 13:57 pmu drwxr-xr-x 2 root root 0 Jun 25 13:57 psci drwxr-xr-x 2 root root 0 Jun 25 13:57 timer drwxr-xr-x 2 root root 0 Jun 25 13:57 virtio_mmio@a000000 drwxr-xr-x 2 root root 0 Jun 25 13:57 virtio_mmio@a000200 ... drwxr-xr-x 2 root root 0 Jun 25 13:57 virtio_mmio@a003e00
하이라키 구조로 표현된 디렉토리들
$ tree /sys/firmware/devicetree
/sys/firmware/devicetree
└── base
├── #address-cells
├── #size-cells
├── apb-pclk
│ ├── #clock-cells
│ ├── clock-frequency
│ ├── clock-output-names
│ ├── compatible
│ ├── name
│ └── phandle
├── chosen
│ ├── bootargs
│ ├── name
│ └── stdout-path
├── compatible
├── cpus
│ ├── #address-cells
│ ├── #size-cells
│ ├── cpu@0
│ │ ├── compatible
│ │ ├── device_type
│ │ ├── enable-method
│ │ ├── name
│ │ └── reg
│ ├── cpu@1
│ │ ├── compatible
│ │ ├── device_type
│ │ ├── enable-method
│ │ ├── name
│ │ └── reg
│ └── name
├── flash@0
│ ├── bank-width
│ ├── compatible
│ ├── name
...
참고
- Device Tree Usage | devicetree.org
- The Linux usage model for device tree data | kernel.org
- Booting the Linux/ppc kernel without Open Firmware | kernel.org
- [Linux:Kernel] 리눅스와 디바이스 트리(Linux and device tree) | 다솜돌이
- devicetree: kernel internals and practical troubleshooting | Sony Mobile – 다운로드 pdf
- Devicetree Specification Release 0.1 | devicetree.org – 다운로드 pdf
- Device Tree 101 | Bootlin – 다운로드 pdf