HomepcDuinoA20 Based pcDuino3/3S/3C/3NanoBSP development for pcDuino3 (II): Port linux-3.15

BSP development for pcDuino3 (II): Port linux-3.15

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[vc_row][vc_column][vc_column_text]We have covered the uboot. Now we will continue the adventure  by looking at port linux3.15.

 

[/vc_column_text][vc_tour][vc_tab title=”Download source files of the latest Linux kenel” tab_id=”1404093631-1-76″][vc_column_text]

#git clone git://github.com/mripard/linux.git -b sunxi-next

Note: # means that the command is on a host PC that is doing cross compilation for the target, which is pcDuino with ARM core.[/vc_column_text][/vc_tab][vc_tab title=”Add dtb of pcDuino” tab_id=”1404093631-2-57″][vc_column_text]

#vim arch/arm/boot/dts/sun7i-a20-pcduino3.dts
/*
 * Copyright 2014 LinkSprite
 * Pillar Zuo<zuobaozhu@gmail.com>
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

/dts-v1/;
/include/ "sun7i-a20.dtsi"
/include/ "sunxi-ahci-reg.dtsi"
/include/ "sun4i-a10-usb-vbus-reg.dtsi"
#include <dt-bindings/input/input.h>

/ {
    model = "LinkSprite pcDuino V3";
    compatible = "linksprite,a20-pcduino", "allwinner,sun7i-a20";

    aliases {
        spi0 = &spi1;
        spi1 = &spi2;
    };

    soc@01c00000 {
        spi1: spi@01c06000 {
            pinctrl-names = "default";
            pinctrl-0 = <&spi1_pins_a>;
            status = "okay";
        };

        spi2: spi@01c17000 {
            pinctrl-names = "default";
            pinctrl-0 = <&spi2_pins_a>;
            status = "okay";
        };

        mmc0: mmc@01c0f000 {
            pinctrl-names = "default", "default";
            pinctrl-0 = <&mmc0_pins_a>;
            pinctrl-1 = <&mmc0_cd_pin_reference_design>;
            cd-gpios = <&pio 7 1 0>; /* PH1 */
            status = "okay";
        };

        usbphy: phy@01c13400 {
            usb1_vbus-supply = <&reg_usb1_vbus>;
            usb2_vbus-supply = <&reg_usb2_vbus>;
            status = "okay";
        };

        ehci0: usb@01c14000 {
            status = "okay";
        };

        ohci0: usb@01c14400 {
            status = "okay";
        };

        ahci: sata@01c18000 {
            target-supply = <&reg_ahci_5v>;
            status = "okay";
        };

        ehci1: usb@01c1c000 {
            status = "okay";
        };

        ohci1: usb@01c1c400 {
            status = "okay";
        };

        pinctrl@01c20800 {
            led_pins_pcduino3: led_pins@0 {
                allwinner,pins = "PH2";
                allwinner,function = "gpio_out";
                allwinner,drive = <1>;
                allwinner,pull = <0>;
            };
        };

        lradc: lradc@01c22800 {
            allwinner,chan0-step = <200>;
            linux,chan0-keycodes = <KEY_VOLUMEUP KEY_VOLUMEDOWN
                        KEY_MENU KEY_SEARCH KEY_HOME
                        KEY_ESC KEY_ENTER>;
            status = "okay";
        };

        uart0: serial@01c28000 {
            pinctrl-names = "default";
            pinctrl-0 = <&uart0_pins_a>;
            status = "okay";
        };

        uart6: serial@01c29800 {
            pinctrl-names = "default";
            pinctrl-0 = <&uart6_pins_a>;
            status = "okay";
        };

        uart7: serial@01c29c00 {
            pinctrl-names = "default";
            pinctrl-0 = <&uart7_pins_a>;
            status = "okay";
        };

        i2c0: i2c@01c2ac00 {
            pinctrl-names = "default";
            pinctrl-0 = <&i2c0_pins_a>;
            status = "okay";
        };

        i2c1: i2c@01c2b000 {
            pinctrl-names = "default";
            pinctrl-0 = <&i2c1_pins_a>;
            status = "okay";
        };

        i2c2: i2c@01c2b400 {
            pinctrl-names = "default";
            pinctrl-0 = <&i2c2_pins_a>;
            status = "okay";
        };

        gmac: ethernet@01c50000 {
            pinctrl-names = "default";
            pinctrl-0 = <&gmac_pins_mii_a>;
            phy = <&phy1>;
            phy-mode = "mii";
            status = "okay";

            phy1: ethernet-phy@1 {
                reg = <1>;
            };
        };
    };

    leds {
        compatible = "gpio-leds";
        pinctrl-names = "default";
        pinctrl-0 = <&led_pins_pcduino3>;

        green {
            label = "a20-pcduino:green:usr";
            gpios = <&pio 7 2 0>;
            default-state = "on";
        };
    };
};
#vim  arch/arm/boot/dts/sunxi-ahci-reg.dtsi
/*
 * sunxi boards sata target power supply common code
 *
 * Copyright 2014 - Hans de Goede <hdegoede@redhat.com>
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

/ {
    soc@01c00000 {
        pio: pinctrl@01c20800 {
            ahci_pwr_pin_a: ahci_pwr_pin@0 {
                allwinner,pins = "PB8";
                allwinner,function = "gpio_out";
                allwinner,drive = <0>;
                allwinner,pull = <0>;
            };
        };
    };

    reg_ahci_5v: ahci-5v {
        compatible = "regulator-fixed";
        pinctrl-names = "default";
        pinctrl-0 = <&ahci_pwr_pin_a>;
        regulator-name = "ahci-5v";
        regulator-min-microvolt = <5000000>;
        regulator-max-microvolt = <5000000>;
        enable-active-high;
        gpio = <&pio 1 8 0>;
    };
};
#vim arch/arm/boot/dts/sun4i-a10-usb-vbus-reg.dtsi
/*
 * sun4i boards usb vbus supply common code
 *
 * Copyright 2014 - Hans de Goede <hdegoede@redhat.com>
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

/ {
    soc@01c00000 {
        pio: pinctrl@01c20800 {
            usb1_vbus_pin_a: usb1_vbus_pin@0 {
                allwinner,pins = "PH6";
                allwinner,function = "gpio_out";
                allwinner,drive = <0>;
                allwinner,pull = <0>;
            };

            usb2_vbus_pin_a: usb2_vbus_pin@0 {
                allwinner,pins = "PH3";
                allwinner,function = "gpio_out";
                allwinner,drive = <0>;
                allwinner,pull = <0>;
            };
        };
    };

    reg_usb1_vbus: usb1-vbus {
        compatible = "regulator-fixed";
        pinctrl-names = "default";
        pinctrl-0 = <&usb1_vbus_pin_a>;
        regulator-name = "usb1-vbus";
        regulator-min-microvolt = <5000000>;
        regulator-max-microvolt = <5000000>;
        enable-active-high;
        gpio = <&pio 7 6 0>;
    };

    reg_usb2_vbus: usb2-vbus {
        compatible = "regulator-fixed";
        pinctrl-names = "default";
        pinctrl-0 = <&usb2_vbus_pin_a>;
        regulator-name = "usb2-vbus";
        regulator-min-microvolt = <5000000>;
        regulator-max-microvolt = <5000000>;
        enable-active-high;
        gpio = <&pio 7 3 0>;
    };
};








[/vc_column_text][/vc_tab][vc_tab title=”Modify Makefile” tab_id=”1404094128111-2-2″][vc_column_text]


#vim arch/arm/boot/dts/Makefile




[/vc_column_text][/vc_tab][vc_tab title=”Create a new directory and configure the kernel” tab_id=”1404094176878-3-5″][vc_column_text]


#mkdir build

#ARCH=arm make sunxi_defconfig O=build

#ARCH=arm make menuconfig O=build


Select:


[*] Enable loadable module support  —>

[*]   Forced module loading

[*] Module unloading

[*] Forced module unloading

[*] Module versioning support

[*] Source checksum for all modules

[*] Module signature verification

[*] Require modules to be validly signed

[*] Automatically sign all modules

Which hash algorithm should modules be signed with? (Sign modules with SHA-1)




System Type —>

[*] Allwinner SoCs —>

[*]   Allwinner A20 (sun7i) SoCs support


[/vc_column_text][/vc_tab][vc_tab title=”Save, quit and begin to build” tab_id=”1404094436939-4-0″][vc_column_text]


#ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LOADADDR=0×40008000 make uImage dtbs O=build -j 8


[/vc_column_text][/vc_tab][vc_tab title=”Copy uImage and dtb to SD” tab_id=”1404095290898-5-5″][vc_column_text]


#cp arch/arm/boot/uImage   /media/5BC6-6413/

#cp cp arch/arm/boot/dts/sun7i-a20-pcduino3.dtb      /media/5BC6-6413/


5BC6-6413 is the first partition. [/vc_column_text][/vc_tab][vc_tab title=”Reboot” tab_id=”1404095867489-6-2″][vc_column_text]


U-Boot SPL 2014.04-rc3-10520-g87ca6dc-dirty (May 28 2014 - 14:07:34)
Board: pcDuino3
DRAM: 1024 MiB
CPU: 960000000Hz, AXI/AHB/APB: 3/2/2
spl: not an uImage at 1600

U-Boot 2014.04-rc3-10520-g87ca6dc-dirty (May 28 2014 - 14:07:34) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
Board: pcDuino3
I2C:   ready
DRAM:  1 GiB
MMC:   SUNXI SD/MMC: 0
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
reading uEnv.txt
240 bytes read in 17 ms (13.7 KiB/s)
Loaded environment from uEnv.txt
Running uenvcmd ...
reading uImage
2077528 bytes read in 144 ms (13.8 MiB/s)
reading dtb
20919 bytes read in 26 ms (785.2 KiB/s)
## Booting kernel from Legacy Image at 46000000 ...
   Image Name:   Linux-3.15.0-rc6-01550-g119918d-
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2077464 Bytes = 2 MiB
   Load Address: 40008000
   Entry Point:  40008000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 49000000
   Booting using the fdt blob at 0x49000000
   Loading Kernel Image ... OK
   Using Device Tree in place at 49000000, end 490081b6

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.15.0-rc6-01550-g119918d-dirty (pillar@server) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #2 SMP Sun Jun 22 20:06:46 CST 2014
[    0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: LinkSprite pcDuino V3
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] PERCPU: Embedded 7 pages/cpu @eefd5000 s6592 r8192 d13888 u32768
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 260624
[    0.000000] Kernel command line: console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rootwait
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Memory: 1035192K/1048576K available (2735K kernel code, 159K rwdata, 884K rodata, 194K init, 222K bss, 13384K reserved, 270336K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc03910f8   (3621 kB)
[    0.000000]       .init : 0xc0392000 - 0xc03c29c0   ( 195 kB)
[    0.000000]       .data : 0xc03c4000 - 0xc03ebc20   ( 160 kB)
[    0.000000]        .bss : 0xc03ebc28 - 0xc04234cc   ( 223 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
[    0.000008] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 2863311519744ns
[    0.000015] Switching to timer-based delay loop
[    0.000283] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956969942ns
[    0.000410] sched_clock: 32 bits at 160MHz, resolution 6ns, wraps every 26843545593ns
[    0.000564] Console: colour dummy device 80x30
[    0.000591] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.000605] pid_max: default: 32768 minimum: 301
[    0.000717] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000729] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.001275] CPU: Testing write buffer coherency: ok
[    0.001548] /cpus/cpu@0 missing clock-frequency property
[    0.001566] /cpus/cpu@1 missing clock-frequency property
[    0.001577] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.001607] Setting up static identity map for 0x402977b8 - 0x40297810
[    0.002525] CPU1: failed to boot: -38
[    0.002559] Brought up 1 CPUs
[    0.002566] SMP: Total of 1 processors activated.
[    0.002572] CPU: All CPU(s) started in SVC mode.
[    0.003080] devtmpfs: initialized
[    0.006668] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4
[    0.006880] pinctrl core: initialized pinctrl subsystem
[    0.007083] regulator-dummy: no parameters
[    0.011494] NET: Registered protocol family 16
[    0.011788] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.019501] reg-fixed-voltage ahci-5v.3: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/ahci_pwr_pin@0, deferring probe
[    0.019531] platform ahci-5v.3: Driver reg-fixed-voltage requests probe deferral
[    0.019554] reg-fixed-voltage usb1-vbus.4: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/usb1_vbus_pin@0, deferring probe
[    0.019568] platform usb1-vbus.4: Driver reg-fixed-voltage requests probe deferral
[    0.019587] reg-fixed-voltage usb2-vbus.5: could not find pctldev for node /soc@01c00000/pinctrl@01c20800/usb2_vbus_pin@0, deferring probe
[    0.019599] platform usb2-vbus.5: Driver reg-fixed-voltage requests probe deferral
[    0.019905] pps_core: LinuxPPS API ver. 1 registered
[    0.019915] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.020021] PTP clock support registered
[    0.020723] Switched to clocksource arch_sys_counter
[    0.027676] NET: Registered protocol family 2
[    0.028124] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.028203] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.028324] TCP: Hash tables configured (established 8192 bind 8192)
[    0.028405] TCP: reno registered
[    0.028419] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.028477] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.028676] NET: Registered protocol family 1
[    0.029089] RPC: Registered named UNIX socket transport module.
[    0.029101] RPC: Registered udp transport module.
[    0.029108] RPC: Registered tcp transport module.
[    0.029114] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.030120] futex hash table entries: 512 (order: 3, 32768 bytes)
[    0.030189] Initialise system trusted keyring
[    0.030688] bounce pool size: 64 pages
[    0.039135] Key type asymmetric registered
[    0.039151] Asymmetric key parser 'x509' registered
[    0.039420] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.039432] io scheduler noop registered
[    0.039439] io scheduler deadline registered
[    0.039622] io scheduler cfq registered (default)
[    0.041812] sun7i-a20-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.083537] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.086046] console [ttyS0] disabled
[    0.106239] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 33, base_baud = 1500000) is a U6_16550A
[    0.654046] console [ttyS0] enabled
[    0.679521] dw-apb-uart 1c29800.serial: Couldn't set LCR to 0
[    0.686268] dw-apb-uart 1c29800.serial: Couldn't set LCR to 0
[    0.692058] 1c29800.serial: ttyS1 at MMIO 0x1c29800 (irq = 51, base_baud = 1500000) is a U6_16550A
[    0.722886] dw-apb-uart 1c29c00.serial: Couldn't set LCR to 0
[    0.729631] dw-apb-uart 1c29c00.serial: Couldn't set LCR to 0
[    0.735403] 1c29c00.serial: ttyS2 at MMIO 0x1c29c00 (irq = 52, base_baud = 1500000) is a U6_16550A
[    0.745736] stmmaceth 1c50000.ethernet: no regulator found
[    0.751305] stmmaceth 1c50000.ethernet: no reset control found
[    0.757136]  Ring mode enabled
[    0.760187]  No HW DMA feature register supported
[    0.764722]  Normal descriptors
[    0.768043]  TX Checksum insertion supported
[    0.775997] libphy: stmmac: probed
[    0.779404] eth0: PHY ID 02430c54 at 1 IRQ 0 (stmmac-0:01) active
[    0.785898] mousedev: PS/2 mouse device common for all mice
[    0.791778] i2c /dev entries driver
[    0.797168] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[    0.806288] TCP: cubic registered
[    0.809611] NET: Registered protocol family 17
[    0.814177] Registering SWP/SWPB emulation handler
[    0.819343] Loading compiled-in X.509 certificates
[    0.831499] Loaded X.509 cert 'Magrathea: Glacier signing key: cc6b77f1515c32d2b4b1365136c9f000545ef48d'
[    0.841469] ahci-5v: 5000 mV 
[    0.844682] usb1-vbus: 5000 mV 
[    0.848055] usb2-vbus: 5000 mV 
[    0.852025] Waiting for root device /dev/mmcblk0p2...


Till now,we can see that the kernel has already booted. [/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]



        

        



        




                
            

        
    
            

                        
                                                                            	

		
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