configs: remove qemu_arm_versatile_nommu_defconfig

Since commit [1], the MMU support is mandatory for MMU-capable ARM
cores. This includes the arm926t ARM core used the
qemu_arm_versatile_nommu configuration.

From [2]
"I don't think supporting ARMv5 noMMU makes much sense, as
explained in the commit log. Supporting ARMv7-M definitely makes
sense, but not ARMv5 noMMU."

Remove this defconfig.

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/2477067386

[1] 8c925613dc1d3af6031c9a39bb51b418cfe2b9d8
[2] http://lists.busybox.net/pipermail/buildroot/2022-May/643064.html

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

board/qemu/arm-versatile/linux-nommu.fragment

@@ -1,59 +0,0 @@
-# CONFIG_ARM_SINGLE_ARMV7M is not set
-CONFIG_ARM_SINGLE_ARCH_VERSATILE=y
-CONFIG_BINFMT_ELF_FDPIC=y
-CONFIG_BINFMT_FLAT=y
-# CONFIG_BLK_DEV_RAM is not set
-# CONFIG_CRAMFS is not set
-CONFIG_CMDLINE=""
-# CONFIG_DEBUG_FS is not set
-# CONFIG_DEBUG_KERNEL is not set
-# CONFIG_DEBUG_USER is not set
-# CONFIG_DRM is not set
-# CONFIG_EEPROM_LEGACY is not set
-# CONFIG_EXT2_FS is not set
-CONFIG_EXT4_FS=y
-CONFIG_FB_ARMCLCD=y
-# CONFIG_FONTS is not set
-CONFIG_FONT_8x16=y
-CONFIG_FONT_8x8=y
-# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
-# CONFIG_FTRACE is not set
-# CONFIG_GPIO_PL061 is not set
-# CONFIG_HIGH_RES_TIMERS is not set
-CONFIG_HWMON=y
-# CONFIG_I2C_VERSATILE is not set
-CONFIG_INET_DIAG=y
-CONFIG_INPUT_EVDEV=y
-CONFIG_IPV6=y
-# CONFIG_IP_MULTICAST is not set
-# CONFIG_IP_PNP is not set
-# CONFIG_MMU is not set
-CONFIG_LOCALVERSION_AUTO=y
-# CONFIG_LOGO is not set
-CONFIG_LOG_BUF_SHIFT=17
-CONFIG_MDIO_DEVICE=y
-# CONFIG_MINIX_FS is not set
-# CONFIG_MMC is not set
-# CONFIG_MTD is not set
-# CONFIG_NEW_LEDS is not set
-# CONFIG_NFSD is not set
-# CONFIG_NFS_FS is not set
-# CONFIG_NLS_CODEPAGE_850 is not set
-# CONFIG_NLS_ISO8859_1 is not set
-# CONFIG_NO_HZ_IDLE is not set
-# CONFIG_NVMEM is not set
-CONFIG_DRAM_BASE=0x00000000
-CONFIG_DRAM_SIZE=0x08000000
-CONFIG_INITRAMFS_SOURCE="${BR_BINARIES_DIR}/rootfs.cpio"
-# CONFIG_PARTITION_ADVANCED is not set
-# CONFIG_OABI_COMPAT is not set
-CONFIG_PHYLIB=y
-# CONFIG_ROMFS_FS is not set
-# CONFIG_RTC_CLASS is not set
-CONFIG_SERIAL_CORE=y
-CONFIG_SERIO_SERPORT=y
-CONFIG_SET_MEM_PARAM=y
-CONFIG_SLUB=y
-# CONFIG_SPI is not set
-# CONFIG_SYNC_FILE is not set
-# CONFIG_VFP is not set

board/qemu/arm-versatile/patches/linux/versatile-nommu.patch

@@ -1,122 +0,0 @@
-From 7c245ffc17a9ab6215830d4ecd8b2f9beddb487c Mon Sep 17 00:00:00 2001
-From: Waldemar Brodkorb <wbx@openadk.org>
-Date: Fri, 1 Feb 2019 11:36:20 +0100
-Subject: [PATCH] arm-versatile-nommu: Linux patch
-
-Originally made by Waldemar Brodkorb <wbx@openadk.org> from LKML.
-
-Rename CLKSRC_OF to TIMER_OF (kernel >= 4.13)
-https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bb0eb050a577a866cb47c2dc37596f1207f4c2d9
-
-Remove GENERIC_CLOCKEVENTS since its enabled by default (kernel >= 5.11)
-https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0774a6ed294b963dc76df2d8342ab86d030759ec
-
-Select CONFIG_GENERIC_IRQ_MULTI_HANDLER since irqchip doesn't select it anymore (kernel >= 5.12)
-https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a79f7051cccb6f3bcd3d2a0a058c7d5c79bb0371
-
-Signed-Off-by: Waldemar Brodkorb <wbx@openadk.org>
-[Gerome: reformated as a Git patch]
-Signed-off-by: Gerome Burlats <gerome.burlats@smile.fr>
-[Romain: fix Waldemar's authorship in Git patch]
-Signed-off-by: Romain Naour <romain.naour@smile.fr>
----
- arch/arm/Kconfig                       | 11 +++++++++++
- arch/arm/Kconfig.debug                 |  3 ++-
- arch/arm/include/asm/mach/map.h        |  1 +
- arch/arm/mach-versatile/Kconfig        |  5 +++--
- arch/arm/mach-versatile/Makefile.boot  |  3 +++
- arch/arm/mach-versatile/versatile_dt.c |  4 ++++
- 6 files changed, 24 insertions(+), 3 deletions(-)
- create mode 100644 arch/arm/mach-versatile/Makefile.boot
-
-diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
-index dcf2df6da98f..c2155c1a2eba 100644
---- a/arch/arm/Kconfig
-+++ b/arch/arm/Kconfig
-@@ -337,6 +337,17 @@ config ARM_SINGLE_ARMV7M
- 	select SPARSE_IRQ
- 	select USE_OF
- 
-+config ARM_SINGLE_ARCH_VERSATILE
-+	bool "ARM Ltd. Versatile family"
-+	depends on !MMU
-+	select AUTO_ZRELADDR
-+	select TIMER_OF
-+	select COMMON_CLK
-+	select GENERIC_IRQ_MULTI_HANDLER
-+	select GPIOLIB
-+	select SPARSE_IRQ
-+	select USE_OF
-+
- config ARCH_EP93XX
- 	bool "EP93xx-based"
- 	select ARCH_SPARSEMEM_ENABLE
-diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
-index 98436702e0c7..7e63299ceb40 100644
---- a/arch/arm/Kconfig.debug
-+++ b/arch/arm/Kconfig.debug
-@@ -1891,7 +1891,8 @@ config DEBUG_UNCOMPRESS
- config UNCOMPRESS_INCLUDE
- 	string
- 	default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
--					PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
-+					PLAT_SAMSUNG || ARM_SINGLE_ARMV7M || \
-+					ARM_SINGLE_ARCH_VERSATILE
- 	default "mach/uncompress.h"
- 
- config EARLY_PRINTK
-diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
-index 92282558caf7..90bd9c069ffc 100644
---- a/arch/arm/include/asm/mach/map.h
-+++ b/arch/arm/include/asm/mach/map.h
-@@ -59,6 +59,7 @@ extern int ioremap_page(unsigned long virt, unsigned long phys,
- #else
- #define iotable_init(map,num)	do { } while (0)
- #define vm_reserve_area_early(a,s,c)	do { } while (0)
-+#define debug_ll_io_init()	do { } while (0)
- #endif
- 
- #endif
-diff --git a/arch/arm/mach-versatile/Kconfig b/arch/arm/mach-versatile/Kconfig
-index d88e7725bf99..d38b90157f13 100644
---- a/arch/arm/mach-versatile/Kconfig
-+++ b/arch/arm/mach-versatile/Kconfig
-@@ -1,7 +1,8 @@
- # SPDX-License-Identifier: GPL-2.0
- config ARCH_VERSATILE
--	bool "ARM Ltd. Versatile family"
--	depends on ARCH_MULTI_V5
-+	bool "ARM Ltd. Versatile family" if ARCH_MULTI_V5
-+	depends on ARCH_MULTI_V5 || ARM_SINGLE_ARCH_VERSATILE
-+	default y if ARM_SINGLE_ARCH_VERSATILE
- 	select ARM_AMBA
- 	select ARM_TIMER_SP804
- 	select ARM_VIC
-diff --git a/arch/arm/mach-versatile/Makefile.boot b/arch/arm/mach-versatile/Makefile.boot
-new file mode 100644
-index 000000000000..eacfc3f5c33e
---- /dev/null
-+++ b/arch/arm/mach-versatile/Makefile.boot
-@@ -0,0 +1,3 @@
-+# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-+# Patch waits for application at
-+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
-diff --git a/arch/arm/mach-versatile/versatile_dt.c b/arch/arm/mach-versatile/versatile_dt.c
-index 02ba68abe533..835b51bc597b 100644
---- a/arch/arm/mach-versatile/versatile_dt.c
-+++ b/arch/arm/mach-versatile/versatile_dt.c
-@@ -22,7 +22,11 @@
- #include <asm/mach/map.h>
- 
- /* macro to get at MMIO space when running virtually */
-+#ifdef CONFIG_MMU
- #define IO_ADDRESS(x)		(((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
-+#else
-+#define IO_ADDRESS(x)		(x)
-+#endif
- #define __io_address(n)		((void __iomem __force *)IO_ADDRESS(n))
- 
- /*
--- 
-2.31.1
-

board/qemu/arm-versatile/readme.txt

@@ -2,9 +2,5 @@ Run the emulation with:
 
   qemu-system-arm -M versatilepb -kernel output/images/zImage -dtb output/images/versatile-pb.dtb -drive file=output/images/rootfs.ext2,if=scsi,format=raw -append "rootwait root=/dev/sda console=ttyAMA0,115200" -serial stdio -net nic,model=rtl8139 -net user # qemu_arm_versatile_defconfig
 
-Or for the noMMU emulation:
-
-  qemu-system-arm -M versatilepb -kernel output/images/zImage -dtb output/images/versatile-pb.dtb -append "console=ttyAMA0,115200" -serial stdio -net user -net nic,model=smc91c111 # qemu_arm_versatile_nommu_defconfig
-
 The login prompt will appear in the terminal that started Qemu. The
 graphical window is the framebuffer.

configs/qemu_arm_versatile_nommu_defconfig

@@ -1,42 +0,0 @@
-# Architecture
-BR2_arm=y
-BR2_arm926t=y
-
-# Toolchain
-BR2_PACKAGE_HOST_ELF2FLT=y
-# BR2_USE_MMU is not set
-
-# Patches
-BR2_GLOBAL_PATCH_DIR="board/qemu/arm-versatile/patches"
-
-# Busybox with hush
-BR2_PACKAGE_BUSYBOX_CONFIG="package/busybox/busybox-minimal.config"
-
-# System
-BR2_SYSTEM_DHCP="eth0"
-BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
-
-# Filesystem
-# BR2_TARGET_ROOTFS_EXT2 is not set
-# BR2_TARGET_ROOTFS_TAR is not set
-BR2_TARGET_ROOTFS_INITRAMFS=y
-
-# Image
-BR2_ROOTFS_POST_IMAGE_SCRIPT="board/qemu/post-image.sh"
-BR2_ROOTFS_POST_SCRIPT_ARGS="$(BR2_DEFCONFIG)"
-
-# Linux headers same as kernel
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
-
-# Kernel
-BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.15.18"
-BR2_LINUX_KERNEL_DEFCONFIG="versatile"
-BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/qemu/arm-versatile/linux-nommu.fragment"
-BR2_LINUX_KERNEL_DTS_SUPPORT=y
-BR2_LINUX_KERNEL_INTREE_DTS_NAME="versatile-pb"
-
-# host-qemu for gitlab testing
-BR2_PACKAGE_HOST_QEMU=y
-BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y