Hi,
I am trying to use an external UART device as primary stdin/stdout console.
| │ │ | ( ) psu_uart_0 | │ │ | ||||||
| │ │ | ( ) axi_uart16550_0 | │ │ | ||||||
| │ │ | (X) axi_uartlite_0 | │ │ | ||||||
| │ │ | ( ) manual | │ │ |
If psu_uart_0 is selected as primary stdin/stdout consol, system boots from SD, eMMC... and I can interact throught serial console. When Linux Boots, the external UARTs are available:
If the axi_uart16550_0 or axi_uartlite_0 devices is selected, Linux does not boot (even bitfile is not loaded).
System: Avnet UltraZed-EG in IOCC board. Xilinx Zynq
UltraScale+
MPSoC
Petalinux version: 2012.2
Vivado version: 2018.2
I am doing anything wrong? I attach in this thread all the info I consider may be useful. If you need additional info please let me know.
Is there any related issue with Petalinux?
Thanks!
The block design is:
pl.dtsi:
/ {
amba_pl: amba_pl@0 {
#address-cells = <2>;
#size-cells = <2>;
compatible = "simple-bus";
ranges ;
axi_dma_0: dma@80000000 {
#dma-cells = <1>;
clock-names = "s_axi_lite_aclk", "m_axi_sg_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk";
clocks = <&clk 71>, <&clk 71>, <&clk 71>, <&clk 71>;
compatible = "xlnx,axi-dma-1.00.a";
interrupt-names = "mm2s_introut", "s2mm_introut";
interrupt-parent = <&gic>;
interrupts = <0 89 4 0 90 4>;
reg = <0x0 0x80000000 0x0 0x1000>;
xlnx,addrwidth = <0x20>;
xlnx,include-sg ;
xlnx,sg-length-width = <0x17>;
dma-channel@80000000 {
compatible = "xlnx,axi-dma-mm2s-channel";
dma-channels = <0x1>;
interrupts = <0 89 4>;
xlnx,datawidth = <0x20>;
xlnx,device-id = <0x0>;
};
dma-channel@80000030 {
compatible = "xlnx,axi-dma-s2mm-channel";
dma-channels = <0x1>;
interrupts = <0 90 4>;
xlnx,datawidth = <0x20>;
xlnx,device-id = <0x0>;
};
};
axi_uart16550_0: serial@80020000 {
clock-frequency = <99999000>;
clock-names = "s_axi_aclk";
clocks = <&clk 71>;
compatible = "xlnx,xps-uart16550-2.00.a", "ns16550a";
current-speed = <115200>;
device_type = "serial";
interrupt-names = "ip2intc_irpt";
interrupt-parent = <&gic>;
interrupts = <0 92 4>;
port-number = <1>;
reg = <0x0 0x80020000 0x0 0x10000>;
reg-offset = <0x1000>;
reg-shift = <2>;
xlnx,external-xin-clk-hz = <0x17d7840>;
xlnx,external-xin-clk-hz-d = <0x19>;
xlnx,has-external-rclk = <0x0>;
xlnx,has-external-xin = <0x0>;
xlnx,is-a-16550 = <0x1>;
xlnx,s-axi-aclk-freq-hz-d = "99.999";
xlnx,use-modem-ports = <0x1>;
xlnx,use-user-ports = <0x1>;
};
axi_uartlite_0: serial@80001000 {
clock-names = "s_axi_aclk";
clocks = <&clk 71>;
compatible = "xlnx,xps-uartlite-1.00.a";
current-speed = <115200>;
device_type = "serial";
interrupt-names = "interrupt";
interrupt-parent = <&gic>;
interrupts = <0 91 1>;
port-number = <0>;
reg = <0x0 0x80001000 0x0 0x1000>;
xlnx,baudrate = <0x1c200>;
xlnx,data-bits = <0x8>;
xlnx,odd-parity = <0x0>;
xlnx,s-axi-aclk-freq-hz-d = "99.999";
xlnx,use-parity = <0x0>;
};
psu_ctrl_ipi: PERIPHERAL@ff380000 {
compatible = "xlnx,PERIPHERAL-1.0";
reg = <0x0 0xff380000 0x0 0x80000>;
};
psu_message_buffers: PERIPHERAL@ff990000 {
compatible = "xlnx,PERIPHERAL-1.0";
reg = <0x0 0xff990000 0x0 0x10000>;
};
M00_AXI_ps: M00_AXI_ps@80010000 {
reg = <0x0 0x80010000 0x0 0x10000>;
};
};
};
system-top.dtsi
/dts-v1/;
/include/ "zynqmp.dtsi"
/include/ "zynqmp-clk-ccf.dtsi"
/include/ "pl.dtsi"
/include/ "pcw.dtsi"
/ {
chosen {
bootargs = "earlycon clk_ignore_unused";
stdout-path = "serial0:115200n8";
};
aliases {
ethernet0 = &gem3;
i2c0 = &i2c1;
serial0 = &axi_uartlite_0;
serial1 = &axi_uart16550_0;
serial2 = &uart0;
spi0 = &qspi;
};
memory {
device_type = "memory";
reg = <0x0 0x0 0x0 0x7ff00000>;
};
};
#include "system-user.dtsi"
platform-auto.h
/* uartlite - axi_uartlite_0 */
#define XILINX_UARTLITE_BASEADDR 0x80001000
#define CONFIG_BAUDRATE 115200
#define TTYUL0 "ttyUL0=setenv stdout ttyUL0;setenv stdin ttyUL0\0"
#define SERIAL_MULTI "serial=setenv stdout serial;setenv stdin serial\0" "stdin=ttyUL0\0" "stdout=ttyUL0\0"
#define CONSOLE_ARG "console=console=ttyUL0,115200\0"
#define SERIAL_MULTI "serial=setenv stdout serial;setenv stdin serial\0" "stdin=ttyUL0\0" "stdout=ttyUL0\0"
#define CONSOLE_ARG "console=console=ttyUL0,115200\0"
*
*
*
/* Extra U-Boot Env settings */
#define CONFIG_EXTRA_ENV_SETTINGS \
SERIAL_MULTI \
CONSOLE_ARG \
DFU_ALT_INFO_RAM \
DFU_ALT_INFO_MMC \
TTYUL0 \
*
*
*
