configs/hp_9000: new defconfig

Add a defconfig to run Linux on a large range of 32-bit HP PA-RISC 1.1
Workstations, such as the HP 9000 700 and Visualize workstations.

While at it, add this defconfig to myself in DEVELOPERS.

Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -3372,10 +3372,12 @@ F:	arch/Config.in.hppa
 F:	arch/arch.mk.hppa
 F:	board/arm/foundation-v8/
 F:	board/bananapi/bananapi-m2-zero/
+F:	board/hp/9000/
 F:	board/qemu/hppa-b160l/
 F:	boot/palo/
 F:	configs/arm_foundationv8_defconfig
 F:	configs/bananapi_m2_zero_defconfig
+F:	configs/hp_9000_defconfig
 F:	configs/qemu_hppa_b160l_defconfig
 F:	configs/uevm5432_defconfig
 F:	package/i7z/

board/hp/9000/genimage.cfg.in

@@ -0,0 +1,16 @@
+image disk.img {
+	hdimage {
+		partition-table-type = "mbr"
+		disk-signature = 0x%PARTUUID%
+	}
+
+	partition boot {
+		partition-type= 0xF0
+		size = 16M
+	}
+
+	partition root {
+		partition-type= 0x83
+		image = "rootfs.ext2"
+	}
+}

board/hp/9000/palo.sh.in

@@ -0,0 +1,21 @@
+#!/bin/sh
+set -eu
+
+# Generate lifimage.
+palo \
+	--bootloader="${BINARIES_DIR}/iplboot" \
+	--commandline='0/vmlinux initrd=0/ramdisk' \
+	--configfile=/dev/null \
+	--init-tape="${BINARIES_DIR}/lifimage" \
+	--ramdisk="${BINARIES_DIR}/rootfs.cpio.gz" \
+	--recoverykernel="${BINARIES_DIR}/vmlinux" \
+	--verbose
+
+# Install loader to disk image.
+palo \
+	--bootloader="${BINARIES_DIR}/iplboot" \
+	--commandline="1/vmlinux root=PARTUUID=%PARTUUID%-02 rootwait" \
+	--configfile=/dev/null \
+	--init-partitioned="${BINARIES_DIR}/disk.img" \
+	--recoverykernel="${BINARIES_DIR}/vmlinux" \
+	--verbose

board/hp/9000/patches/linux-headers/linux-headers.hash

@@ -0,0 +1 @@
+../linux/linux.hash

board/hp/9000/patches/linux/linux.hash

@@ -0,0 +1,2 @@
+# From https://cdn.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
+sha256  76bffbae7eab2a1de1ed05692bef709f43b02a52fe95ae655cacf0fa252213f3  linux-6.16.5.tar.xz

board/hp/9000/post-image.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+set -eu
+
+BOARD_DIR="$(dirname "$0")"
+
+# Generate a random 32-bit signature for the disk image and
+# substitute it in genimage configuration file and palo script.
+PARTUUID="$("$HOST_DIR"/bin/uuidgen -r |sed 's/-.*//')"
+
+sed "s/%PARTUUID%/$PARTUUID/g" "$BOARD_DIR/genimage.cfg.in" \
+	> "$BINARIES_DIR/genimage.cfg"
+
+sed "s/%PARTUUID%/$PARTUUID/g" "$BOARD_DIR/palo.sh.in" \
+	> "$BINARIES_DIR/palo.sh"
+
+chmod +x "$BINARIES_DIR/palo.sh"

board/hp/9000/readme.txt

@@ -0,0 +1,57 @@
+Introduction
+============
+
+The hp_9000_defconfig is meant to run Linux on a large range of 32-bit
+HP PA-RISC 1.1 Workstations, such as the HP 9000 700 and Visualize
+workstations. [1]
+
+Building
+========
+
+  $ make hp_9000_defconfig
+  $ make
+
+Generated files under output/images:
+
+* lifimage: network bootable image comprising Linux kernel and ramdisk.
+* disk.img: bootable disk image, with Linux kernel and root filesystem.
+
+Running
+=======
+
+To run the generated system, one method is to write the disk image directly to
+the workstation hard disk drive using a PC and an SCSI adapter. Extract the
+disk from the workstation, connect it to the PC, then do:
+
+  # dd if=output/images/disk.img of=<hdd device> ; sync
+
+Put the disk back into the workstation, connect to the UART console with
+baudrate 9600; the firmware should boot Linux from disk and you should obtain a
+login prompt.
+
+Another method is to boot from the network. This necessitates to setup a DHCP
+and TFTP server, such as dnsmasq[2], to give the workstation its boot filename
+with DHCP and serve the lifimage with TFTP.
+
+Connect to the UART console with baudrate 9600 and interrupt the boot sequence
+of the firmware.
+
+On an HP 9000 712 workstation, do:
+
+  BOOT_ADMIN> boot lan
+
+On an HP Visualize J210XC workstation, do:
+
+  Configuration Menu: Enter command > boot lan
+  Interact with IPL (Y or N)?>  n
+
+The firmware should boot Linux from the network and you should obtain a login
+prompt.
+
+It is possible to download the disk image from the network and write it to the
+hard disk drive, for example with TFTP:
+
+  # tftp -g -r <path to>/disk.img -l /dev/sda <server ip>
+
+[1] https://www.openpa.net/systems/
+[2] https://dnsmasq.org/doc.html

configs/hp_9000_defconfig

@@ -0,0 +1,20 @@
+BR2_hppa=y
+BR2_parisc11=y
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_6_16=y
+BR2_GLOBAL_PATCH_DIR="board/hp/9000/patches"
+BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
+BR2_SYSTEM_DHCP="eth0"
+BR2_ROOTFS_POST_IMAGE_SCRIPT=" board/hp/9000/post-image.sh support/scripts/genimage.sh $(BINARIES_DIR)/palo.sh"
+BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BINARIES_DIR)/genimage.cfg"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.16.5"
+BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+BR2_TARGET_ROOTFS_CPIO=y
+BR2_TARGET_ROOTFS_CPIO_GZIP=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_EXT2_4=y
+# BR2_TARGET_ROOTFS_TAR is not set
+BR2_TARGET_PALO=y
+BR2_PACKAGE_HOST_GENIMAGE=y