下記のLinux起動エラーだけど、Kernelソースを追いかけたら、どうもClockに名前がついていないのでエラーが出ていてここに引っかかっていたようだ。
----ここから----
ps7-slcr mapped to e0802000
smp_twd: clock not found -2
ERROR: timer input clock not found
------------[ cut here ]------------
Kernel BUG at c0563a8c [verbose debug info unavailable]
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.0-xilinx #1
task: c0583408 ti: c0578000 task.ti: c0578000
PC is at ttc_timer_init+0x54/0x384
LR is at ttc_timer_init+0x54/0x384
----ここまで----
つまり、修正するのはDevice Treeであったことだ。
Device Treeを下記に修正するとこのエラーを突破できる。
----ここから----
/*
*/
/dts-v1/; / {
#size-cells = <1>;
compatible = "xlnx,zynq-7000";
model = "Xilinx Zynq";
aliases {
ethernet0 = &ps7_ethernet_0;
serial0 = &ps7_uart_1;
spi0 = &ps7_qspi_0;
} ;
chosen {
bootargs = "console=ttyPS0,115200 root=/dev/ram rw earlyprintk";
linux,stdout-path = "/amba@0/serial@e0001000";
} ;
cpus {
#address-cells = <1>;
#size-cells = <0>;
ps7_cortexa9_0: cpu@0 {
bus-handle = <&ps7_axi_interconnect_0>;
compatible = "arm,cortex-a9";
d-cache-line-size = <0x20>;
d-cache-size = <0x8000>;
device_type = "cpu";
i-cache-line-size = <0x20>;
i-cache-size = <0x8000>;
interrupt-handle = <&ps7_scugic_0>;
reg = <0x0>;
} ;
ps7_cortexa9_1: cpu@1 {
bus-handle = <&ps7_axi_interconnect_0>;
compatible = "arm,cortex-a9";
d-cache-line-size = <0x20>;
d-cache-size = <0x8000>;
device_type = "cpu";
i-cache-line-size = <0x20>;
i-cache-size = <0x8000>;
interrupt-handle = <&ps7_scugic_0>;
reg = <0x1>;
} ;
} ;
pmu {
compatible = "arm,cortex-a9-pmu";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 5 4>, <0 6 4>;
reg = <0xf8891000 0x1000>, <0xf8893000 0x1000>;
reg-names = "cpu0", "cpu1";
} ;
ps7_ddr_0: memory@0 {
device_type = "memory";
reg = <0x0 0x20000000>;
} ;
ps7_axi_interconnect_0: amba@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,ps7-axi-interconnect-1.00.a", "simple-bus";
ranges ;
ps7_afi_0: ps7-afi@f8008000 {
compatible = "xlnx,ps7-afi-1.00.a";
reg = <0xf8008000 0x1000>;
} ;
ps7_afi_1: ps7-afi@f8009000 {
compatible = "xlnx,ps7-afi-1.00.a";
reg = <0xf8009000 0x1000>;
} ;
ps7_afi_2: ps7-afi@f800a000 {
compatible = "xlnx,ps7-afi-1.00.a";
reg = <0xf800a000 0x1000>;
} ;
ps7_afi_3: ps7-afi@f800b000 {
compatible = "xlnx,ps7-afi-1.00.a";
reg = <0xf800b000 0x1000>;
} ;
ps7_ddrc_0: ps7-ddrc@f8006000 {
compatible = "xlnx,ps7-ddrc-1.00.a", "xlnx,ps7-ddrc";
reg = <0xf8006000 0x1000>;
xlnx,has-ecc = <0x0>;
} ;
ps7_dev_cfg_0: ps7-dev-cfg@f8007000 {
clock-names = "ref_clk", "fclk0", "fclk1", "fclk2", "fclk3";
clocks = <&clkc 12>, <&clkc 15>, <&clkc 16>, <&clkc 17>, <&clkc 18>;
compatible = "xlnx,ps7-dev-cfg-1.00.a";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 8 4>;
reg = <0xf8007000 0x100>;
} ;
ps7_dma_s: ps7-dma@f8003000 {
#dma-cells = <1>;
#dma-channels = <8>;
#dma-requests = <4>;
arm,primecell-periphid = <0x41330>;
clock-names = "apb_pclk";
clocks = <&clkc 27>;
compatible = "xlnx,ps7-dma-1.00.a", "arm,primecell", "arm,pl330";
interrupt-names = "abort", "dma0", "dma1", "dma2", "dma3",
"dma4", "dma5", "dma6", "dma7";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 13 4>, <0 14 4>, <0 15 4>, <0 16 4>, <0 17 4>, <0 40 4>, <0 41 4>, <0 42 4>, <0 43 4>;
reg = <0xf8003000 0x1000>;
} ;
ps7_ethernet_0: ps7-ethernet@e000b000 {
#address-cells = <1>;
#size-cells = <0>;
clock-names = "ref_clk", "aper_clk";
clocks = <&clkc 13>, <&clkc 30>;
compatible = "xlnx,ps7-ethernet-1.00.a";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 22 4>;
local-mac-address = [00 0a 35 00 00 00];
phy-handle = <&phy0>;
phy-mode = "rgmii-id";
reg = <0xe000b000 0x1000>;
xlnx,enet-reset = <0xffffffff>;
xlnx,eth-mode = <0x1>;
xlnx,has-mdio = <0x1>;
xlnx,ptp-enet-clock = <111111115>;
mdio {
#address-cells = <1>;
#size-cells = <0>;
phy0: phy@7 {
compatible = "marvell,88e1510";
device_type = "ethernet-phy";
reg = <7>;
} ;
} ;
} ;
ps7_gpio_0: ps7-gpio@e000a000 {
#gpio-cells = <2>;
clocks = <&clkc 42>;
compatible = "xlnx,ps7-gpio-1.00.a";
emio-gpio-width = <64>;
gpio-controller ;
gpio-mask-high = <0xc0000>;
gpio-mask-low = <0xfe81>;
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 20 4>;
reg = <0xe000a000 0x1000>;
} ;
ps7_iop_bus_config_0: ps7-iop-bus-config@e0200000 {
compatible = "xlnx,ps7-iop-bus-config-1.00.a";
reg = <0xe0200000 0x1000>;
} ;
ps7_pl310_0: ps7-pl310@f8f02000 {
arm,data-latency = <3 2 2>;
arm,tag-latency = <2 2 2>;
cache-level = <2>;
cache-unified ;
compatible = "xlnx,ps7-pl310-1.00.a", "arm,pl310-cache";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 2 4>;
reg = <0xf8f02000 0x1000>;
} ;
ps7_qspi_0: ps7-qspi@e000d000 {
clock-names = "ref_clk", "aper_clk";
clocks = <&clkc 10>, <&clkc 43>;
compatible = "xlnx,ps7-qspi-1.00.a";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 19 4>;
is-dual = <0>;
num-chip-select = <1>;
reg = <0xe000d000 0x1000>;
xlnx,fb-clk = <0x1>;
xlnx,qspi-mode = <0x0>;
#address-cells = <1>;
#size-cells = <0>;
flash@0 {
compatible = "n25q128";
reg = <0x0>;
spi-max-frequency = <50000000>;
#address-cells = <1>;
#size-cells = <1>;
partition@qspi-fsbl-uboot {
label = "qspi-fsbl-uboot";
reg = <0x0 0x100000>;
};
partition@qspi-linux {
label = "qspi-linux";
reg = <0x100000 0x500000>;
};
partition@qspi-device-tree {
label = "qspi-device-tree";
reg = <0x600000 0x20000>;
};
partition@qspi-rootfs {
label = "qspi-rootfs";
reg = <0x620000 0x5E0000>;
};
partition@qspi-bitstream {
label = "qspi-bitstream";
reg = <0xC00000 0x400000>;
};
};
} ;
ps7_qspi_linear_0: ps7-qspi-linear@fc000000 {
clock-names = "ref_clk", "aper_clk";
clocks = <&clkc 10>, <&clkc 43>;
compatible = "xlnx,ps7-qspi-linear-1.00.a";
reg = <0xfc000000 0x1000000>;
} ;
ps7_ram_0: ps7-ram@0 {
compatible = "xlnx,ps7-ram-1.00.a", "xlnx,ps7-ocm";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 3 4>;
reg = <0xfffc0000 0x40000>;
} ;
ps7_scugic_0: ps7-scugic@f8f01000 {
#address-cells = <2>;
#interrupt-cells = <3>;
#size-cells = <1>;
compatible = "xlnx,ps7-scugic-1.00.a", "arm,cortex-a9-gic", "arm,gic";
interrupt-controller ;
num_cpus = <2>;
num_interrupts = <96>;
reg = <0xf8f01000 0x1000>, <0xf8f00100 0x100>;
} ;
ps7_scutimer_0: ps7-scutimer@f8f00600 {
clocks = <&clkc 4>;
compatible = "xlnx,ps7-scutimer-1.00.a", "arm,cortex-a9-twd-timer";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <1 13 0x301>;
reg = <0xf8f00600 0x20>;
} ;
ps7_scuwdt_0: ps7-scuwdt@f8f00620 {
clocks = <&clkc 4>;
compatible = "xlnx,ps7-scuwdt-1.00.a";
device_type = "watchdog";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <1 14 0x301>;
reg = <0xf8f00620 0xe0>;
} ;
ps7_sd_0: ps7-sdio@e0100000 {
clock-frequency = <50000000>;
clock-names = "ref_clk", "aper_clk";
clocks = <&clkc 21>, <&clkc 32>;
compatible = "xlnx,ps7-sdio-1.00.a", "generic-sdhci", "arasan,sdhci";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 24 4>;
reg = <0xe0100000 0x1000>;
xlnx,has-cd = <0x1>;
xlnx,has-power = <0x0>;
xlnx,has-wp = <0x1>;
} ;
ps7_slcr_0: ps7-slcr@f8000000 {
compatible = "xlnx,ps7-slcr-1.00.a", "xlnx,zynq-slcr";
reg = <0xf8000000 0x1000>;
clocks {
#address-cells = <1>;
#size-cells = <0>;
clkc: clkc {
#clock-cells = <1>;
clock-output-names = "armpll", "ddrpll", "iopll", "cpu_6or4x", "cpu_3or2x",
"cpu_2x", "cpu_1x", "ddr2x", "ddr3x", "dci",
"lqspi", "smc", "pcap", "gem0", "gem1",
"fclk0", "fclk1", "fclk2", "fclk3", "can0",
"can1", "sdio0", "sdio1", "uart0", "uart1",
"spi0", "spi1", "dma", "usb0_aper", "usb1_aper",
"gem0_aper", "gem1_aper", "sdio0_aper", "sdio1_aper", "spi0_aper",
"spi1_aper", "can0_aper", "can1_aper", "i2c0_aper", "i2c1_aper",
"uart0_aper", "uart1_aper", "gpio_aper", "lqspi_aper", "smc_aper",
"swdt", "dbg_trc", "dbg_apb";
compatible = "xlnx,ps7-clkc";
fclk-enable = <0xf>;
ps-clk-frequency = <33333333>;
} ;
} ;
} ;
ps7_ttc_0: ps7-ttc@f8001000 {
clocks = <&clkc 6>;
compatible = "xlnx,ps7-ttc-1.00.a", "cdns,ttc";
interrupt-names = "ttc0", "ttc1", "ttc2";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 10 4>, <0 11 4>, <0 12 4>;
reg = <0xf8001000 0x1000>;
} ;
ps7_uart_1: serial@e0001000 {
clock-names = "ref_clk", "aper_clk";
clocks = <&clkc 24>, <&clkc 41>;
compatible = "xlnx,ps7-uart-1.00.a", "xlnx,xuartps";
current-speed = <115200>;
device_type = "serial";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 50 4>;
port-number = <0>;
reg = <0xe0001000 0x1000>;
xlnx,has-modem = <0x0>;
} ;
ps7_usb_0: ps7-usb@e0002000 {
clocks = <&clkc 28>;
compatible = "xlnx,ps7-usb-1.00.a";
dr_mode = "host";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 21 4>;
phy_type = "ulpi";
reg = <0xe0002000 0x1000>;
xlnx,usb-reset = <0xffffffff>;
} ;
ps7_xadc: ps7-xadc@f8007100 {
clocks = <&clkc 12>;
compatible = "xlnx,ps7-xadc-1.00.a";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 7 4>;
reg = <0xf8007100 0x20>;
} ;
} ;
} ;
----ここまで----
しかし、次に待ち構えているエラーがファイルマウントだったとは・・・