Bug: Microblaze stopped booting after 0fa1c579349fdd90173381712ad78aa99c09d38b

From: Alvaro G. M.
Date: Fri Mar 09 2018 - 07:58:48 EST

Hi,

I've found via git bisect that 0fa1c579349fdd90173381712ad78aa99c09d38b
makes microblaze unbootable.

I'm sorry I can't provide any console output, as nothing appears at all,
even when setting earlyprintk (or at least I wasn't able to get anything
back!).

I'm providing both dts and defconfig in case it helps.

Best regards

CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_FHANDLE=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_BLK_DEV_INITRD=y
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_KERNEL_BASE_ADDR=0x80000000
CONFIG_XILINX_MICROBLAZE0_FAMILY="artix7"
CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1
CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1
CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1
CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=2
CONFIG_HZ_100=y
CONFIG_MMU=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyUL0,9600"
CONFIG_HIGHMEM=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_MTD=y
CONFIG_MTD_TESTS=m
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_SPI_NOR=y
CONFIG_NETDEVICES=y
CONFIG_XILINX_EMACLITE=y
CONFIG_DP83848_PHY=y
CONFIG_DP83620_PHY=y
CONFIG_SERIAL_UARTLITE=y
CONFIG_SERIAL_UARTLITE_CONSOLE=y
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_XILINX=y
CONFIG_SPI=y
CONFIG_SPI_XILINX=y
CONFIG_SPI_SPIDEV=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_XILINX=y
CONFIG_SENSORS_IIO_HWMON=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_FB=y
CONFIG_FB_XILINX=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_ONESHOT=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_LEDS_TRIGGER_TRANSIENT=y
CONFIG_LEDS_TRIGGER_CAMERA=y
CONFIG_UIO=y
CONFIG_UIO_PDRV_GENIRQ=y
CONFIG_IIO=y
CONFIG_AD799X=y
CONFIG_XILINX_XADC=y
CONFIG_PWM=y
CONFIG_JFFS2_FS=y
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_LZ4=y
CONFIG_SQUASHFS_4K_DEVBLK_SIZE=y
CONFIG_ROMFS_FS=y
CONFIG_ROMFS_BACKED_BY_BOTH=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_SLAB=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_EARLY_PRINTK=y
CONFIG_CRYPTO_MANAGER=y

/dts-v1/;
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,microblaze";
model = "Xilinx MicroBlaze";
cpus {
#address-cells = <1>;
#cpus = <1>;
#size-cells = <0>;
microblaze_0: cpu@0 {
bus-handle = <&amba_pl>;
clock-frequency = <83250000>;
clocks = <&clk_cpu>;
compatible = "xlnx,microblaze-9.5";
d-cache-baseaddr = <0x80000000>;
d-cache-highaddr = <0x8fffffff>;
d-cache-line-size = <0x10>;
d-cache-size = <0x8000>;
device_type = "cpu";
i-cache-baseaddr = <0x80000000>;
i-cache-highaddr = <0x8fffffff>;
i-cache-line-size = <0x20>;
i-cache-size = <0x8000>;
interrupt-handle = <&microblaze_0_axi_intc>;
model = "microblaze,9.5";
timebase-frequency = <83250000>;
xlnx,addr-tag-bits = <0xd>;
xlnx,allow-dcache-wr = <0x1>;
xlnx,allow-icache-wr = <0x1>;
xlnx,area-optimized = <0x0>;
xlnx,async-interrupt = <0x1>;
xlnx,avoid-primitives = <0x0>;
xlnx,base-vectors = <0x00000000>;
xlnx,branch-target-cache-size = <0x0>;
xlnx,cache-byte-size = <0x8000>;
xlnx,d-axi = <0x1>;
xlnx,d-lmb = <0x1>;
xlnx,d-lmb-mon = <0x0>;
xlnx,data-size = <0x20>;
xlnx,dc-axi-mon = <0x0>;
xlnx,dcache-addr-tag = <0xd>;
xlnx,dcache-always-used = <0x1>;
xlnx,dcache-byte-size = <0x8000>;
xlnx,dcache-data-width = <0x0>;
xlnx,dcache-force-tag-lutram = <0x0>;
xlnx,dcache-line-len = <0x4>;
xlnx,dcache-use-writeback = <0x0>;
xlnx,dcache-victims = <0x8>;
xlnx,debug-counter-width = <0x20>;
xlnx,debug-enabled = <0x1>;
xlnx,debug-event-counters = <0x5>;
xlnx,debug-external-trace = <0x0>;
xlnx,debug-latency-counters = <0x1>;
xlnx,debug-profile-size = <0x0>;
xlnx,debug-trace-size = <0x2000>;
xlnx,div-zero-exception = <0x1>;
xlnx,dp-axi-mon = <0x0>;
xlnx,dynamic-bus-sizing = <0x0>;
xlnx,ecc-use-ce-exception = <0x0>;
xlnx,edge-is-positive = <0x1>;
xlnx,enable-discrete-ports = <0x0>;
xlnx,endianness = <0x1>;
xlnx,fault-tolerant = <0x0>;
xlnx,fpu-exception = <0x0>;
xlnx,freq = <0x4f64b50>;
xlnx,fsl-exception = <0x0>;
xlnx,fsl-links = <0x0>;
xlnx,i-axi = <0x0>;
xlnx,i-lmb = <0x1>;
xlnx,i-lmb-mon = <0x0>;
xlnx,ic-axi-mon = <0x0>;
xlnx,icache-always-used = <0x1>;
xlnx,icache-data-width = <0x0>;
xlnx,icache-force-tag-lutram = <0x0>;
xlnx,icache-line-len = <0x8>;
xlnx,icache-streams = <0x1>;
xlnx,icache-victims = <0x8>;
xlnx,ill-opcode-exception = <0x1>;
xlnx,imprecise-exceptions = <0x0>;
xlnx,interconnect = <0x2>;
xlnx,interrupt-is-edge = <0x0>;
xlnx,interrupt-mon = <0x0>;
xlnx,ip-axi-mon = <0x0>;
xlnx,lockstep-select = <0x0>;
xlnx,lockstep-slave = <0x0>;
xlnx,mmu-dtlb-size = <0x4>;
xlnx,mmu-itlb-size = <0x2>;
xlnx,mmu-privileged-instr = <0x0>;
xlnx,mmu-tlb-access = <0x3>;
xlnx,mmu-zones = <0x2>;
xlnx,num-sync-ff-clk = <0x2>;
xlnx,num-sync-ff-clk-debug = <0x2>;
xlnx,num-sync-ff-clk-irq = <0x1>;
xlnx,num-sync-ff-dbg-clk = <0x1>;
xlnx,number-of-pc-brk = <0x1>;
xlnx,number-of-rd-addr-brk = <0x0>;
xlnx,number-of-wr-addr-brk = <0x0>;
xlnx,opcode-0x0-illegal = <0x1>;
xlnx,optimization = <0x0>;
xlnx,pc-width = <0x20>;
xlnx,pvr = <0x2>;
xlnx,pvr-user1 = <0x00>;
xlnx,pvr-user2 = <0x00000000>;
xlnx,reset-msr = <0x00000000>;
xlnx,sco = <0x0>;
xlnx,trace = <0x0>;
xlnx,unaligned-exceptions = <0x1>;
xlnx,use-barrel = <0x1>;
xlnx,use-branch-target-cache = <0x0>;
xlnx,use-config-reset = <0x0>;
xlnx,use-dcache = <0x1>;
xlnx,use-div = <0x1>;
xlnx,use-ext-brk = <0x0>;
xlnx,use-ext-nm-brk = <0x0>;
xlnx,use-extended-fsl-instr = <0x0>;
xlnx,use-fpu = <0x0>;
xlnx,use-hw-mul = <0x2>;
xlnx,use-icache = <0x1>;
xlnx,use-interrupt = <0x2>;
xlnx,use-mmu = <0x3>;
xlnx,use-msr-instr = <0x1>;
xlnx,use-pcmp-instr = <0x1>;
xlnx,use-reorder-instr = <0x1>;
xlnx,use-stack-protection = <0x0>;
};
};
clocks {
#address-cells = <1>;
#size-cells = <0>;
clk_cpu: clk_cpu@0 {
#clock-cells = <0>;
clock-frequency = <83250000>;
clock-output-names = "clk_cpu";
compatible = "fixed-clock";
reg = <0>;
};
clk_bus_0: clk_bus_0@1 {
#clock-cells = <0>;
clock-frequency = <83250000>;
clock-output-names = "clk_bus_0";
compatible = "fixed-clock";
reg = <1>;
};
};
amba_pl: amba_pl {
#address-cells = <1>;
#size-cells = <1>;
compatible = "simple-bus";
ranges ;
axi_ethernetlite_0: ethernet@40e00000 {
compatible = "xlnx,xps-ethernetlite-1.00.a";
device_type = "network";
interrupt-parent = <&microblaze_0_axi_intc>;
interrupts = <2 0>;
reg = <0x40e00000 0x10000>;
xlnx,duplex = <0x1>;
xlnx,include-global-buffers = <0x1>;
xlnx,include-internal-loopback = <0x1>;
xlnx,include-mdio = <0x1>;
xlnx,rx-ping-pong = <0x1>;
xlnx,s-axi-id-width = <0x1>;
xlnx,tx-ping-pong = <0x1>;
xlnx,use-internal = <0x0>;
phy-handle = <&phy0>;
axi_ethernetlite_0_mdio: mdio {
#address-cells = <1>;
#size-cells = <0>;
phy0: phy@0 {
device_type = "ethernet-phy";
reg = <1>;
};
};
};
axi_quad_spi_0: axi_quad_spi@44a00000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "xlnx,xps-spi-2.00.a";
interrupt-parent = <&microblaze_0_axi_intc>;
interrupts = <3 0>;
reg = <0x44a00000 0x10000>;
xlnx,num-ss-bits = <0x1>;
axi_flash_spi_0: n25q128@0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "micron,n25q128a", "jedec,spi-nor";
reg = <0>; /* Chip select 0 */
spi-max-frequency = <100000000>;
xlnx,num-ss-bits = <0x1>;

partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

partition@bitfile {
label = "bitfile";
reg = <0x000000 0x200000>;
};
partition@kernel {
label = "kernel";
reg = <0x200000 0x500000>;
};
partition@rootfs {
label = "rootfs";
reg = <0x700000 0x700000>;
};
partition@persistent {
label = "persistent";
reg = <0xe00000 0x200000>;
};
partition@full-image {
label = "full-image";
reg = <0x000000 0xE00000>;
};
partition@full-disk {
label = "full-disk";
reg = <0x000000 0x1000000>;
};
};
};
};

axi_timer_0: timer@41c00000 {
clock-frequency = <83250000>;
clocks = <&clk_bus_0>;
compatible = "xlnx,xps-timer-1.00.a";
interrupt-parent = <&microblaze_0_axi_intc>;
interrupts = <0 2>;
reg = <0x41c00000 0x10000>;
xlnx,count-width = <0x20>;
xlnx,gen0-assert = <0x1>;
xlnx,gen1-assert = <0x1>;
xlnx,one-timer-only = <0x0>;
xlnx,trig0-assert = <0x1>;
xlnx,trig1-assert = <0x1>;
};
axi_timer_1: pwm@41c10000 {
clock-frequency = <83250000>;
clocks = <&clk_bus_0>;
compatible = "xlnx,xps-timer-1.00.a";
reg = <0x41c10000 0x10000>;
#pwm-cells = <2>;
xlnx,pwm-outputs = <1>;
xlnx,count-width = <0x20>;
xlnx,gen0-assert = <0x1>;
xlnx,gen1-assert = <0x1>;
xlnx,one-timer-only = <0x0>;
xlnx,trig0-assert = <0x1>;
xlnx,trig1-assert = <0x1>;
};
axi_uartlite_0: serial@40600000 {
clock-frequency = <83250000>;
clocks = <&clk_bus_0>;
compatible = "xlnx,xps-uartlite-1.00.a";
current-speed = <115200>;
device_type = "serial";
interrupt-parent = <&microblaze_0_axi_intc>;
interrupts = <1 0>;
port-number = <0>;
reg = <0x40600000 0x10000>;
xlnx,baudrate = <0x2580>;
xlnx,data-bits = <0x8>;
xlnx,odd-parity = <0x0>;
xlnx,s-axi-aclk-freq-hz-d = "83.25";
xlnx,use-parity = <0x0>;
};
microblaze_0_axi_intc: interrupt-controller@41200000 {
#interrupt-cells = <2>;
compatible = "xlnx,xps-intc-1.00.a";
interrupt-controller ;
reg = <0x41200000 0x10000>;
xlnx,kind-of-intr = <0xfe>;
xlnx,num-intr-inputs = <0x4>;
};
};
};
/ {
chosen {
bootargs = "console=ttyUL0,9600 root=/dev/mtdblock2 earlyprintk=serial,ttyS0,9600";
linux,stdout-path = &axi_uartlite_0;
stdout-path = &axi_uartlite_0;
};
aliases {
ethernet0 = &axi_ethernetlite_0;
serial0 = &axi_uartlite_0;
spi0 = &axi_quad_spi_0;
flash0 = &axi_flash_spi_0;
};
memory {
device_type = "memory";
reg = <0x80000000 0x0f800000>;
};
};
&axi_ethernetlite_0 {
local-mac-address = [00 0a 35 00 00 00];
};


--
Alvaro G. M.