Linux第36步_创建正点原子的TF-A工作区

创建正点原子的TF-A工作区，目的是想查看正点原子的设备树文件“stm32mp157d-atk.dts”和设备树头文件“stm32mp157d-atk.dtsi”，了解设备树是什么样子，为后期基于“ST公司的源码”创建自己的设备树提供参考，同时也是为了学习移植uboot。

1、在Ubuntu桌面，找到Visual Studio Code，在图标上右击鼠标，点击“打开”，见下图：

得到下图：

2、点击“文件”，再点击“打开文件夹”，见下图：

3、点击下图中的“其他位置”

4、点击“计算机”-à“home” -à“zgq”-à“linux”-à“atk_mp1”-à“alientek_tf-a”

见下图：

5、点击 “确定”

6、将“欢迎使用”关闭，再点击“文件”，点击“将工作区另存为…”，见下图操作：

得到下图：

7、输入“tf-a”，再点击“保存”

得到下图：

8、点击“tf-a-stm32mp-2.2.r1”，得到下图：

9、点击“fdts”,然后点击“stm32mp157d-atk.dts”，查看设备树文件，见下图：

“stm32mp157d-atk.dts”内容如下：

// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)

/*

 * Copyright (C) STMicroelectronics 2019 - All Rights Reserved

 * Author: Alexandre Torgue for STMicroelectronics.

 */

/dts-v1/;

#include "stm32mp157.dtsi"

#include "stm32mp15xd.dtsi"

#include "stm32mp15-pinctrl.dtsi"

#include "stm32mp15xxaa-pinctrl.dtsi"

#include "stm32mp157d-atk.dtsi"

#include <dt-bindings/soc/st,stm32-etzpc.h>

/ {

model = "STMicroelectronics STM32MP157D eval daughter";

compatible = "st,stm32mp157d-atk", "st,stm32mp157";

chosen {

stdout-path = "serial0:115200n8";

};

aliases {

serial0 = &uart4;

};

};

&cpu1 {

cpu-supply = <&vddcore>;

};

&etzpc {

st,decprot = <

DECPROT(STM32MP1_ETZPC_USART1_ID,DECPROT_NS_RW,DECPROT_UNLOCK)

DECPROT(STM32MP1_ETZPC_SPI6_ID, DECPROT_NS_RW, DECPROT_UNLOCK)

DECPROT(STM32MP1_ETZPC_I2C4_ID, DECPROT_NS_RW, DECPROT_UNLOCK)

DECPROT(STM32MP1_ETZPC_I2C6_ID, DECPROT_NS_RW, DECPROT_UNLOCK)

DECPROT(STM32MP1_ETZPC_RNG1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)

DECPROT(STM32MP1_ETZPC_HASH1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)

DECPROT(STM32MP1_ETZPC_DDRCTRL_ID, DECPROT_S_RW, DECPROT_LOCK)

DECPROT(STM32MP1_ETZPC_DDRPHYC_ID, DECPROT_S_RW, DECPROT_LOCK)

DECPROT(STM32MP1_ETZPC_STGENC_ID, DECPROT_S_RW, DECPROT_LOCK)

DECPROT(STM32MP1_ETZPC_BKPSRAM_ID, DECPROT_S_RW, DECPROT_LOCK)

DECPROT(STM32MP1_ETZPC_IWDG1_ID, DECPROT_S_RW, DECPROT_LOCK)

>;

};

10、点击“fdts”,然后点击“stm32mp157d-atk.dtsi”，查看设备树头文件，见下图：

“stm32mp157d-atk.dtsi”内容如下：

// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)

/*

 * Copyright (C) STMicroelectronics 2017 - All Rights Reserved

 * Author: Ludovic Barre for STMicroelectronics.

 */

#include 

#include 

#include "stm32mp15-ddr3-2x4Gb-1066-binG.dtsi"

/ {

memory@c0000000 {

device_type = "memory";

reg = <0xC0000000 0x40000000>;

};

   vddcore: regulator-vddcore {

        compatible = "regulator-fixed";

        regulator-name = "vddcore";

        regulator-min-microvolt = <1200000>;

        regulator-max-microvolt = <1350000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    vdd_ddr: regulator-vdd-ddr {

        compatible = "regulator-fixed";

        regulator-name = "vdd_ddr";

        regulator-min-microvolt = <1350000>;

        regulator-max-microvolt = <1350000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    vdda: regulator-vvdda {

        compatible = "regulator-fixed";

        regulator-name = "vdda";

        regulator-min-microvolt = <2900000>;

        regulator-max-microvolt = <2900000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    vtt_ddr: regulator-vtt-ddr {

        compatible = "regulator-fixed";

        regulator-name = "vtt_ddr";

        regulator-min-microvolt = <500000>;

        regulator-max-microvolt = <750000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    v3v3: regulator-3p3v {

        compatible = "regulator-fixed";

        regulator-name = "v3v3";

        regulator-min-microvolt = <3300000>;

        regulator-max-microvolt = <3300000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    v1v8_audio: regulator-v1v8-audio {

        compatible = "regulator-fixed";

        regulator-name = "v1v8_audio";

        regulator-min-microvolt = <1800000>;

        regulator-max-microvolt = <1800000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    v3v3_hdmi: regulator-v3v3-hdmi {

        compatible = "regulator-fixed";

        regulator-name = "v3v3_hdmi";

        regulator-min-microvolt = <3300000>;

        regulator-max-microvolt = <3300000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    v1v2_hdmi: regulator-v1v2-hdmi {

        compatible = "regulator-fixed";

        regulator-name = "v1v2_hdmi";

        regulator-min-microvolt = <1200000>;

        regulator-max-microvolt = <1200000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    vdd: regulator-vdd {

        compatible = "regulator-fixed";

        regulator-name = "vdd";

        regulator-min-microvolt = <3300000>;

        regulator-max-microvolt = <3300000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    vdd_usb: regulator-vdd-usb {

        compatible = "regulator-fixed";

        regulator-name = "vdd_usb";

        regulator-min-microvolt = <3300000>;

        regulator-max-microvolt = <3300000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

    v2v8: regulator-v2v8 {

        compatible = "regulator-fixed";

        regulator-name = "v2v8";

        regulator-min-microvolt = <2800000>;

        regulator-max-microvolt = <2800000>;

        regulator-off-in-suspend;

        regulator-always-on;

    };

};

&bsec {

board_id: board_id@ec {

reg = <0xec 0x4>;

st,non-secure-otp;

};

};

&clk_hse {

st,digbypass;

};

&cpu0{

cpu-supply = <&vddcore>;

};

&hash1 {

status = "okay";

};

&iwdg2 {

    timeout-sec = <32>;

    status = "okay";

    secure-status = "okay";

};

&nvmem_layout {

nvmem-cells = <&cfg0_otp>,

      <&part_number_otp>,

      <&monotonic_otp>,

      <&nand_otp>,

      <&uid_otp>,

      <&package_otp>,

      <&hw2_otp>,

      <&pkh_otp>,

      <&board_id>;

nvmem-cell-names = "cfg0_otp",

   "part_number_otp",

   "monotonic_otp",

   "nand_otp",

   "uid_otp",

   "package_otp",

   "hw2_otp",

   "pkh_otp",

   "board_id";

};

&pwr_regulators {

system_suspend_supported_soc_modes = <

STM32_PM_CSLEEP_RUN

STM32_PM_CSTOP_ALLOW_LP_STOP

STM32_PM_CSTOP_ALLOW_LPLV_STOP

STM32_PM_CSTOP_ALLOW_STANDBY_DDR_SR

>;

system_off_soc_mode = ;

vdd-supply = <&vdd>;

vdd_3v3_usbfs-supply = <&vdd_usb>;

};

&rcc {

st,hsi-cal;

st,csi-cal;

st,cal-sec = <60>;

st,clksrc = <

CLK_MPU_PLL1P

CLK_AXI_PLL2P

CLK_MCU_PLL3P

CLK_PLL12_HSE

CLK_PLL3_HSE

CLK_PLL4_HSE

CLK_RTC_LSE

CLK_MCO1_DISABLED

CLK_MCO2_DISABLED

>;

st,clkdiv = <

1 /*MPU*/

0 /*AXI*/

0 /*MCU*/

1 /*APB1*/

1 /*APB2*/

1 /*APB3*/

1 /*APB4*/

2 /*APB5*/

23 /*RTC*/

0 /*MCO1*/

0 /*MCO2*/

>;

st,pkcs = <

CLK_CKPER_HSE

CLK_FMC_ACLK

CLK_QSPI_ACLK

CLK_ETH_DISABLED

CLK_SDMMC12_PLL4P

CLK_DSI_DSIPLL

CLK_STGEN_HSE

CLK_USBPHY_HSE

CLK_SPI2S1_PLL3Q

CLK_SPI2S23_PLL3Q

CLK_SPI45_HSI

CLK_SPI6_HSI

CLK_I2C46_HSI

CLK_SDMMC3_PLL4P

CLK_USBO_USBPHY

CLK_ADC_CKPER

CLK_CEC_LSE

CLK_I2C12_HSI

CLK_I2C35_HSI

CLK_UART1_HSI

CLK_UART24_HSI

CLK_UART35_HSI

CLK_UART6_HSI

CLK_UART78_HSI

CLK_SPDIF_PLL4P

CLK_FDCAN_PLL4R

CLK_SAI1_PLL3Q

CLK_SAI2_PLL3Q

CLK_SAI3_PLL3Q

CLK_SAI4_PLL3Q

CLK_RNG1_LSI

CLK_RNG2_LSI

CLK_LPTIM1_PCLK1

CLK_LPTIM23_PCLK3

CLK_LPTIM45_LSE

>;

/* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */

pll2: st,pll@1 {

compatible = "st,stm32mp1-pll";

reg = <1>;

cfg = <2 65 1 0 0 PQR(1,1,1)>;

frac = <0x1400>;

};

/* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */

pll3: st,pll@2 {

compatible = "st,stm32mp1-pll";

reg = <2>;

cfg = <1 33 1 16 36 PQR(1,1,1)>;

frac = <0x1a04>;

};

/* VCO = 594.0 MHz => P = 99, Q = 74, R = 74 */

pll4: st,pll@3 {

compatible = "st,stm32mp1-pll";

reg = <3>;

cfg = <3 98 5 7 7 PQR(1,1,1)>;

};

};

&sdmmc1 {

pinctrl-names = "default";

pinctrl-0 = <&sdmmc1_b4_pins_a &sdmmc1_dir_pins_a>;

st,neg-edge;

    broken-cd;

bus-width = <4>;

vmmc-supply = <&v3v3>;

status = "okay";

};

&sdmmc2 {

pinctrl-names = "default";

pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;

non-removable;

st,neg-edge;

bus-width = <8>;

vmmc-supply = <&v3v3>;

    vqmmc-supply = <&v3v3>;

status = "okay";

};

&uart4 {

pinctrl-names = "default";

pinctrl-0 = <&uart4_pins_a>;

status = "okay";

};

&usbotg_hs {

phys = <&usbphyc_port1 0>;

phy-names = "usb2-phy";

usb-role-switch;

status = "okay";

};

&usbphyc {

status = "okay";

};

&usbphyc_port0 {

phy-supply = <&vdd_usb>;

};

&usbphyc_port1 {

phy-supply = <&vdd_usb>;

};