Serge Vakulenko sergev

Let's install Debian 9.0 "Stretch" on QEMU MIPS32 under Ubuntu.

Step 1: Install QEMU

sudo apt install qemu-system-mips

Step 2: Download Linux kernel and installation image

wget http://ftp.debian.org/debian/dists/stretch/main/installer-mipsel/current/images/malta/netboot/vmlinux-4.9.0-11-4kc-malta

Let's start Debian MIPS32 on QEMU:

qemu-system-mipsel \
    -cpu    4KEc \
    -M      malta \
    -m      2048 \
    -hda    hda.qcow \
    -kernel vmlinux-4.9.0-11-4kc-malta \
    -initrd initrd.img-4.9.0-11-4kc-malta \
    -append root=/dev/sda1 \

Here you can see a device tree of Linux MIPS32 running on virtual QEMU Malta board:

root@debian:~# dtc -I fs -O dts /proc/device-tree
Warning (unit_address_vs_reg): Node /isa has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /interrupt-controller@20 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name
/dts-v1/;

/ {
	compatible = "mti,malta";

Here you can see a device tree of Linux MIPS32 running on Microchip PIC32MZ-DA Starter Kit board:

(debian) ~ # dtc -I fs -O dts /proc/device-tree
Warning (unit_address_vs_reg): Node /oc1 has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /oc2 has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /oc3 has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /oc4 has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /oc5 has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /oc6 has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /oc7 has a reg or ranges property, but no unit name

	dask # boot
	1733830 bytes read in 252 ms (6.6 MiB/s)
	7343 bytes read in 8 ms (895.5 KiB/s)
	## Booting kernel from Legacy Image at 88500000 ...
	Image Name:
	Created: 2019-10-25 0:59:01 UTC
	Image Type: MIPS Linux Kernel Image (gzip compressed)
	Data Size: 1733766 Bytes = 1.7 MiB
	Load Address: 88000000
	Entry Point: 88000400

	U-Boot 2015.07-00021-g893592104d (Oct 29 2019 - 18:34:01 -0700)

	Board: PIC32MZ[DA]
	CPU Speed: 200 MHz
	SPI: ready
	DRAM: 32 MiB
	Flash: 2 MiB
	MMC: pic32-sdhci: 0
	In: serial
	Out: serial

	[ 0.000000] Booting Linux on physical CPU 0x0
	[ 0.000000] Linux version 4.19.75+ (dom@buildbot) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1270 Tue Sep 24 18:38:54 BST 2019
	[ 0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
	[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
	[ 0.000000] OF: fdt: Machine model: Raspberry Pi Zero W Rev 1.1
	[ 0.000000] Memory policy: Data cache writeback
	[ 0.000000] cma: Reserved 8 MiB at 0x1b400000
	[ 0.000000] random: get_random_bytes called from start_kernel+0x8c/0x49c with crng_init=0
	[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 113680
	[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 smsc95xx.macaddr=B8:27:EB:14:45:10 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 console=ttyS0,115200 console=tty1 root=PARTUUID=6c586e13-02 rootfstype=ext4

	U-Boot 2015.07-00021-g893592104d (Oct 29 2019 - 18:34:01 -0700)

	Board: PIC32MZ[DA]
	CPU Speed: 200 MHz
	SPI: ready
	DRAM: 32 MiB
	Flash: 2 MiB
	MMC: pic32-sdhci: 0
	In: serial
	Out: serial

	Limit: 1000
	Load 55 words from a+x_a-x_x-a.oct
	(0) *** Reset
	(1) *** Clear reset
	(2) K[0] = 00000
	(2) C = 00000
	(2) R = 1xx (k,undef)
	(2) GIE = 0
	(3) A = 0000 0000 0000 0000
	(4) R = 100 (k,undef)