我正在使用Xilinx Zynq UltraScale + MPSoC ZCU102评估套件，我是使用该主板的新手。我正在关注此链接以使用GPIO开关生成中断并关闭LED：http://www.wiki.xilinx.com/Linux+GPIO+Driver。驱动程序正常工作，led是心跳，当我检查/ proc / interrupts得到：
...
223: 0 0 0 0 GICv2 154 Level fd4c0000.dma
224: 0 0 0 0 xgpio 0 Edge sw14
233: 0 0 0 0 GICv2 97 Level xhci-hcd:usb1
...
但是当我打开cpu停止并且我收到此错误时：
root@Xilinx-ZCU102-2016_1:~# [ 18.111391] Unable to handle kernel paging request at virtual address b9410a80aa13043f
[ 18.119243] pgd = ffffffc87ad07000
[ 18.122615] [b9410a80aa13043f] *pgd=0000000000000000, *pud=0000000000000000
[ 18.129559] Internal error: Oops: 96000004 [#1] SMP
[ 18.134420] Modules linked in:
[ 18.137460] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.0 #78
[ 18.143361] Hardware name: ZynqMP ZCU102 RevB (DT)
[ 18.148136] task: ffffffc00224efc0 ti: ffffffc002240000 task.ti: ffffffc002240000
[ 18.155613] PC is at xgpio_irqhandler+0x2c/0x144
[ 18.160202] LR is at xgpio_irqhandler+0x1c/0x144
[ 18.164801] pc : [<ffffffc0003c8ee0>] lr : [<ffffffc0003c8ed0>] pstate: 600001c5
[ 18.172185] sp : ffffffc002243d00
[ 18.175476] x29: ffffffc002243d00 x28: 0000000000000000
[ 18.180769] x27: 0000000000000000 x26: ffffffc0022c2000
[ 18.186063] x25: ffffffc00078acf0 x24: ffffff8000015000
[ 18.191358] x23: ffffffc0003c8eb4 x22: b9410a80aa1303f7
[ 18.196653] x21: 0000000000000000 x20: 0000000000000000
[ 18.201948] x19: ffffffc002227000 x18: 0000000000000001
[ 18.207242] x17: 0000000000000006 x16: ffffffbe1dae9f68
[ 18.212537] x15: ffffffc87b08f000 x14: 0000000000000007
[ 18.217832] x13: ffffffc87b801128 x12: 0000004000000000
[ 18.223127] x11: ffffffc002246000 x10: 00000000000006e0
[ 18.228422] x9 : ffffffc002243e70 x8 : ffffffc87b400058
[ 18.233716] x7 : ffffffc87b400d88 x6 : 0000000000000002
[ 18.239011] x5 : 00000000fffffffa x4 : ffffffc87b400d89
[ 18.244306] x3 : 0000000000000000 x2 : 0000000000000000
[ 18.249601] x1 : 0000000000000020 x0 : 0000000000000000
[ 18.254895]
[ 18.256373] Process swapper/0 (pid: 0, stack limit = 0xffffffc002240020)
[ 18.263060] Stack: (0xffffffc002243d00 to 0xffffffc002244000)
[ 18.268790] 3d00: ffffffc002243d50 ffffffc0000d1088 ffffffc002227000 0000000000000000
[ 18.276609] 3d20: 0000000000000000 ffffffc002249040 ffffff8000014010 ffffffc0000d13cc
[ 18.284421] 3d40: ffffffc002243d50 ffffffc0000d107c ffffffc002243d60 ffffffc0000d13a0
[ 18.292232] 3d60: ffffffc002243da0 ffffffc000080cec ffffff800001400c ffffffc002279000
[ 18.300045] 3d80: ffffffc002243de0 ffffffc0000e5ed0 ffffffc87b808000 00000079000ec410
[ 18.307857] 3da0: ffffffc002243f00 ffffffc000083da8 ffffffc002240000 ffffffc002246000
[ 18.315668] 3dc0: ffffffc002243f00 ffffffc000084e70 0000000060000145 ffffffc002228f40
[ 18.323480] 3de0: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[ 18.331292] 3e00: 0000000000000000 000000001999999a 002aad4b00000000 00000000fffeecaa
[ 18.339104] 3e20: 00000000fffeecab ffffffc002243e70 00000000000006e0 ffffffc002246000
[ 18.346916] 3e40: 0000004000000000 ffffffc87b801128 0000000000000007 ffffffc87b08f000
[ 18.354729] 3e60: ffffffbe1dae9f68 0000000000000006 0000000000000001 ffffffc002240000
[ 18.362541] 3e80: ffffffc002246000 ffffffc002246ad0 ffffffc0022259c0 ffffffc002243f20
[ 18.370352] 3ea0: ffffffc002228f40 ffffffc00078acf0 ffffffc0022c2000 0000000000000000
[ 18.378164] 3ec0: 0000000000000000 ffffffc002243f00 ffffffc000084e6c ffffffc002243f00
[ 18.385977] 3ee0: ffffffc000084e70 0000000060000145 ffffffc00078acf0 ffffffc00077c278
[ 18.393789] 3f00: ffffffc002243f10 ffffffc0000ca2e0 ffffffc002243f20 ffffffc0000ca418
[ 18.401600] 3f20: ffffffc002243f90 ffffffc000779080 ffffffc0022c5000 ffffffc0022c5000
[ 18.409413] 3f40: ffffffc0022c5000 ffffffc002246000 ffffffc87ffa2580 ffffffc000a6fca8
[ 18.417224] 3f60: 000000000231c000 000000000231f000 ffffffc0000801d8 0000000000000000
[ 18.425037] 3f80: ffffffc002243f90 ffffffc000779078 ffffffc002243fa0 ffffffc000a3d94c
[ 18.432848] 3fa0: 0000000000000000 0000000000780000 0000000000000000 0000000000000e12
[ 18.440660] 3fc0: 0000000004080000 0000000000000000 0000000000000000 0000000000000000
[ 18.448472] 3fe0: 0000000000000000 ffffffc000a6fca8 0000000000000000 0000000000000000
[ 18.456281] Call trace:
[ 18.458707] [<ffffffc0003c8ee0>] xgpio_irqhandler+0x2c/0x144
[ 18.464353] [<ffffffc0000d1088>] generic_handle_irq+0x24/0x38
[ 18.470079] [<ffffffc0000d13a0>] __handle_domain_irq+0x60/0xac
[ 18.475895] [<ffffffc000080cec>] gic_handle_irq+0x60/0xb4
[ 18.481274] Exception stack(0xffffffc002243db0 to 0xffffffc002243ed0)
[ 18.487699] 3da0: ffffffc002240000 ffffffc002246000
[ 18.495518] 3dc0: ffffffc002243f00 ffffffc000084e70 0000000060000145 ffffffc002228f40
[ 18.503329] 3de0: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[ 18.511142] 3e00: 0000000000000000 000000001999999a 002aad4b00000000 00000000fffeecaa
[ 18.518954] 3e20: 00000000fffeecab ffffffc002243e70 00000000000006e0 ffffffc002246000
[ 18.526766] 3e40: 0000004000000000 ffffffc87b801128 0000000000000007 ffffffc87b08f000
[ 18.534578] 3e60: ffffffbe1dae9f68 0000000000000006 0000000000000001 ffffffc002240000
[ 18.542390] 3e80: ffffffc002246000 ffffffc002246ad0 ffffffc0022259c0 ffffffc002243f20
[ 18.550202] 3ea0: ffffffc002228f40 ffffffc00078acf0 ffffffc0022c2000 0000000000000000
[ 18.558013] 3ec0: 0000000000000000 ffffffc002243f00
[ 18.562868] [<ffffffc000083da8>] el1_irq+0x68/0xc0
[ 18.567643] [<ffffffc0000ca2e0>] default_idle_call+0x1c/0x30
[ 18.573284] [<ffffffc0000ca418>] cpu_startup_entry+0x124/0x1dc
[ 18.579101] [<ffffffc000779080>] rest_init+0x74/0x7c
[ 18.584049] [<ffffffc000a3d94c>] start_kernel+0x394/0x3a8
[ 18.589427] [<0000000000780000>] 0x780000
[ 18.593421] Code: b4000820 f9400800 f9400414 f9401ef6 (f94026c0)
[ 18.599503] ---[ end trace fc72e20977be1640 ]---
[ 18.604096] Kernel panic - not syncing: Fatal exception in interrupt
[ 18.610435] CPU3: stopping
[ 18.613125] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G D 4.4.0 #78
[ 18.620241] Hardware name: ZynqMP ZCU102 RevB (DT)
[ 18.625013] Call trace:
[ 18.627447] [<ffffffc000087da8>] dump_backtrace+0x0/0x114
[ 18.632829] [<ffffffc000087ed0>] show_stack+0x14/0x1c
[ 18.637865] [<ffffffc000393cf8>] dump_stack+0x84/0xa0
[ 18.642897] [<ffffffc00008d4cc>] handle_IPI+0x18c/0x1a0
[ 18.648104] [<ffffffc000080d28>] gic_handle_irq+0x9c/0xb4
[ 18.653486] Exception stack(0xffffffc87b8efdf0 to 0xffffffc87b8eff10)
[ 18.659910] fde0: ffffffc87b8ec000 ffffffc002246000
[ 18.667730] fe00: ffffffc87b8eff40 ffffffc000084e70 0000000060000145 ffffffc002228f40
[ 18.675541] fe20: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[ 18.683353] fe40: 0000000000000000 000000001999999a 000a037a00000000 00000000fffeed1b
[ 18.691165] fe60: 00000000fffeed1c ffffffc87b8efeb0 00000000000006e0 0000000000000005
[ 18.698977] fe80: ffffffc00078b5d4 ffffffc073ad7b80 ffffffc87b325380 ffffffc87ba30000
[ 18.706789] fea0: ffffffbe1db0baa0 0000000000000006 0000000000000001 ffffffc87b8ec000
[ 18.714601] fec0: ffffffc002246000 ffffffc002246ad0 ffffffc0022259c0 ffffffc87b8eff60
[ 18.722413] fee0: ffffffc002228f40 ffffffc00078acf0 ffffffc0022c2000 0000000000000000
[ 18.730224] ff00: 0000000000000000 ffffffc87b8eff40
[ 18.735078] [<ffffffc000083da8>] el1_irq+0x68/0xc0
[ 18.739853] [<ffffffc0000ca2e0>] default_idle_call+0x1c/0x30
[ 18.745496] [<ffffffc0000ca418>] cpu_startup_entry+0x124/0x1dc
[ 18.751310] [<ffffffc00008cfcc>] secondary_start_kernel+0x11c/0x140
[ 18.757559] [<000000000008103c>] 0x8103c
[ 18.761464] CPU2: stopping
[ 18.764157] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D 4.4.0 #78
[ 18.771273] Hardware name: ZynqMP ZCU102 RevB (DT)
[ 18.776045] Call trace:
[ 18.778479] [<ffffffc000087da8>] dump_backtrace+0x0/0x114
[ 18.783861] [<ffffffc000087ed0>] show_stack+0x14/0x1c
[ 18.788895] [<ffffffc000393cf8>] dump_stack+0x84/0xa0
[ 18.793929] [<ffffffc00008d4cc>] handle_IPI+0x18c/0x1a0
[ 18.799136] [<ffffffc000080d28>] gic_handle_irq+0x9c/0xb4
[ 18.804518] Exception stack(0xffffffc87b8ebdf0 to 0xffffffc87b8ebf10)
[ 18.810942] bde0: ffffffc87b8e8000 ffffffc002246000
[ 18.818762] be00: ffffffc87b8ebf40 ffffffc000084e70 0000000060000145 ffffffc002228f40
[ 18.826573] be20: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[ 18.834385] be40: 0000000000000000 000000001999999a 000f424000000000 00000000fffeed31
[ 18.842197] be60: 00000000fffeed32 ffffffc87b8ebeb0 00000000000006e0 ffffffc002246000
[ 18.850009] be80: 0000004000000000 ffffffc87b801128 000000000000001c ffffffc87ac9c000
[ 18.857821] bea0: ffffffbe1dadc240 0000000000000006 0000000000000001 ffffffc87b8e8000
[ 18.865633] bec0: ffffffc002246000 ffffffc002246ad0 ffffffc0022259c0 ffffffc87b8ebf60
[ 18.873445] bee0: ffffffc002228f40 ffffffc00078acf0 ffffffc0022c2000 0000000000000000
[ 18.881256] bf00: 0000000000000000 ffffffc87b8ebf40
[ 18.886110] [<ffffffc000083da8>] el1_irq+0x68/0xc0
[ 18.890885] [<ffffffc0000ca2e0>] default_idle_call+0x1c/0x30
[ 18.896527] [<ffffffc0000ca418>] cpu_startup_entry+0x124/0x1dc
[ 18.902342] [<ffffffc00008cfcc>] secondary_start_kernel+0x11c/0x140
[ 18.908591] [<000000000008103c>] 0x8103c
[ 18.912496] CPU1: stopping
[ 18.915188] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 4.4.0 #78
[ 18.922305] Hardware name: ZynqMP ZCU102 RevB (DT)
[ 18.927077] Call trace:
[ 18.929511] [<ffffffc000087da8>] dump_backtrace+0x0/0x114
[ 18.934893] [<ffffffc000087ed0>] show_stack+0x14/0x1c
[ 18.939927] [<ffffffc000393cf8>] dump_stack+0x84/0xa0
[ 18.944961] [<ffffffc00008d4cc>] handle_IPI+0x18c/0x1a0
[ 18.950168] [<ffffffc000080d28>] gic_handle_irq+0x9c/0xb4
[ 18.955550] Exception stack(0xffffffc87b8e3df0 to 0xffffffc87b8e3f10)
[ 18.961974] 3de0: ffffffc87b8e0000 ffffffc002246000
[ 18.969794] 3e00: ffffffc87b8e3f40 ffffffc000084e70 0000000060000145 ffffffc002228f40
[ 18.977605] 3e20: 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[ 18.985417] 3e40: 0000000000000000 000000001999999a 000cdfe600000000 00000000fffeed27
[ 18.993229] 3e60: 00000000fffeed28 ffffffc87b8e3eb0 00000000000006e0 ffffffc002246000
[ 19.001041] 3e80: 0000004000000000 ffffffc87b801128 000000000000000e ffffffc87b3de000
[ 19.008853] 3ea0: ffffffbe1daf58b0 0000000000000006 0000000000000001 ffffffc87b8e0000
[ 19.016665] 3ec0: ffffffc002246000 ffffffc002246ad0 ffffffc0022259c0 ffffffc87b8e3f60
[ 19.024477] 3ee0: ffffffc002228f40 ffffffc00078acf0 ffffffc0022c2000 0000000000000000
[ 19.032288] 3f00: 0000000000000000 ffffffc87b8e3f40
[ 19.037142] [<ffffffc000083da8>] el1_irq+0x68/0xc0
[ 19.041917] [<ffffffc0000ca2e0>] default_idle_call+0x1c/0x30
[ 19.047559] [<ffffffc0000ca418>] cpu_startup_entry+0x124/0x1dc
[ 19.053374] [<ffffffc00008cfcc>] secondary_start_kernel+0x11c/0x140
[ 19.059623] [<000000000008103c>] 0x8103c
[ 19.063529] ---[ end Kernel panic - not syncing: Fatal exception in interrupt
这是我的pl设备树，任何想法？：
/ {
amba_pl: amba_pl {
#address-cells = <2>;
#size-cells = <2>;
compatible = "simple-bus";
ranges ;
axi_gpio_0: gpio@80000000 {
#gpio-cells = <2>;
#interrupt-cells = <2>;
compatible = "xlnx,xps-gpio-1.00.a";
gpio-controller ;
interrupt-controller ;
interrupt-parent = <&gic>;
interrupts = <0 89 1>;
reg = <0x0 0x80000000 0x0 0x10000>;
xlnx,all-inputs = <0x1>;
xlnx,all-inputs-2 = <0x0>;
xlnx,all-outputs = <0x0>;
xlnx,all-outputs-2 = <0x0>;
xlnx,dout-default = <0x00000000>;
xlnx,dout-default-2 = <0x00000000>;
xlnx,gpio-width = <0x8>;
xlnx,gpio2-width = <0x20>;
xlnx,interrupt-present = <0x1>;
xlnx,is-dual = <0x0>;
xlnx,tri-default = <0xFFFFFFFF>;
xlnx,tri-default-2 = <0xFFFFFFFF>;
};
gpio-keys {
compatible = "gpio-keys";
#address-cells = <1>;
#size-cells = <0>;
autorepeat;
sw14 {
label = "sw14";
gpios = <&axi_gpio_0 0 0>;
linux,code = <108>; /* down */
gpio-key,wakeup;
autorepeat;
};
};
axi_gpio_1: gpio@80010000 {
#gpio-cells = <2>;
compatible = "xlnx,xps-gpio-1.00.a";
gpio-controller ;
reg = <0x0 0x80010000 0x0 0x10000>;
xlnx,all-inputs = <0x0>;
xlnx,all-inputs-2 = <0x0>;
xlnx,all-outputs = <0x1>;
xlnx,all-outputs-2 = <0x0>;
xlnx,dout-default = <0x00000000>;
xlnx,dout-default-2 = <0x00000000>;
xlnx,gpio-width = <0x8>;
xlnx,gpio2-width = <0x20>;
xlnx,interrupt-present = <0x0>;
xlnx,is-dual = <0x0>;
xlnx,tri-default = <0xFFFFFFFF>;
xlnx,tri-default-2 = <0xFFFFFFFF>;
};
gpio-leds {
compatible = "gpio-leds";
led-ds23 {
label = "led-ds23";
gpios = <&axi_gpio_1 0 0>;
default-state = "on";
linux,default-trigger = "heartbeat";
};
};
};
};