linux: update kernels to latest LTS

4 files changed, 181 insertions, 0 deletions

diff --git a/target/linux/patches/6.6.48/armnommu-fix-thread-registers.patch b/target/linux/patches/6.6.48/armnommu-fix-thread-registers.patch
new file mode 100644
index 000000000..8ab2196dc
--- /dev/null
+++ b/target/linux/patches/6.6.48/armnommu-fix-thread-registers.patch
@@ -0,0 +1,57 @@
+From 1410ebe685f13c1699a16bf147ae1332e7fd1983 Mon Sep 17 00:00:00 2001
+From: Greg Ungerer <gerg@kernel.org>
+Date: Thu, 20 Apr 2023 09:52:08 +1000
+Subject: [PATCH] ARM: start_thread: restore registers on ELF load for noMMU
+
+The binfmt_elf-fdpic loader is capable of loading constant displacement
+ELF format binaries (like those compiled -pie) on noMMU systems as well
+as elf-fdpic format binaries. The traditional ELF loader cannot be
+enabled on noMMU systems.
+
+Commit 5e588114329c ("ARM: start_thread(): don't always clear all regs")
+fixed the start_thread() code so that it maintains the required
+elf-fdpic registers through to the new process, but it only does that if
+current has its personality FDPIC_FUNCPTRS bit set. That is true for
+elf-fdpic format binaries but will not be true for non-fdpic ELF
+binaries.
+
+Modify the test of the FDPIC_FUNCPTRS personality bit to also carry out
+the register restore if this is a noMMU system. This is not perfect,
+since it will also preserve these registers on noMMU systems for all
+binary format types (could be flat format for example). That won't break
+anything, but it is potentially leaking some information into the new
+process. But for the noMMU case we need those start time registers set to
+be able to finalize the runtime loading of the -pie style ELF binary
+(carry out its segment and dynamic relocation processing).
+
+Unfortunately the FDPIC_FUNCPTRS flag cannot just be enabled for all
+elf-fdpic loaded binaries. That personality bit is used for other things
+like the controlling the changed behavior for signal handling.
+
+There is no change in behavior for normal ELF loading on MMU systems.
+A -pie style ELF binary built for noMMU systems can be load and run using
+the usual ELF loader on an MMU system (elf-fdpic loader not required in
+this case).
+
+Signed-off-by: Greg Ungerer <gerg@kernel.org>
+---
+ arch/arm/include/asm/processor.h | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
+index 326864f79d18..5074cc3ae4e1 100644
+--- a/arch/arm/include/asm/processor.h
++++ b/arch/arm/include/asm/processor.h
+@@ -60,7 +60,8 @@ static inline void arch_thread_struct_whitelist(unsigned long *offset,
+ 	}								\
+ 	memset(regs->uregs, 0, sizeof(regs->uregs));			\
+ 	if (IS_ENABLED(CONFIG_BINFMT_ELF_FDPIC) &&			\
+-	    current->personality & FDPIC_FUNCPTRS) {			\
++	    ((! IS_ENABLED(CONFIG_MMU)) ||				\
++	     current->personality & FDPIC_FUNCPTRS)) {			\
+ 		regs->ARM_r7 = r7;					\
+ 		regs->ARM_r8 = r8;					\
+ 		regs->ARM_r9 = r9;					\
+-- 
+2.25.1
+
diff --git a/target/linux/patches/6.6.48/armnommu-versatile.patch b/target/linux/patches/6.6.48/armnommu-versatile.patch
new file mode 100644
index 000000000..f8f10f50b
--- /dev/null
+++ b/target/linux/patches/6.6.48/armnommu-versatile.patch
@@ -0,0 +1,101 @@
+From 77c038d93769c92ef54cdbb50388564d1b37987b Mon Sep 17 00:00:00 2001
+From: Greg Ungerer <gerg@kernel.org>
+Date: Fri, 23 Sep 2016 13:37:34 +1000
+Subject: [PATCH] ARM: versatile: support configuring versatile machine for no-MMU
+
+Allow the arm versatile machine to be configured for no-MMU operation.
+
+Older kernels had the ability to build the versatile machine with the MMU
+disabled (!CONFIG_MMU). Recent changes to convert the versatile machine
+to device tree lost this ability. (Although older kernels could be built
+they did not run due to a bug in the IO_ADDRESS() mapping on this machine).
+
+The motivation for this is that the versatile machine is well supported
+in qemu. And this provides an excellent platform for development and
+testing no-MMU support on ARM in general.
+
+This patch adds a versatile platform selection in the upper level arm
+system type menu - where it appeared in older kernel versions - when
+configuring for the no-MMU case. There is no visible change to the way
+versatile is selected for the MMU enabled case.
+
+Signed-off-by: Greg Ungerer <gerg@kernel.org>
+---
+ arch/arm/Kconfig                    |   13 ++++++++++++-
+ arch/arm/include/asm/mach/map.h     |    1 +
+ arch/arm/mach-versatile/Kconfig     |    2 +-
+ arch/arm/mach-versatile/versatile.c |    4 ++++
+ 4 files changed, 18 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/mach-versatile/versatile.c b/arch/arm/mach-versatile/versatile.c
+index 02ba68abe533..835b51bc597b 100644
+--- a/arch/arm/mach-versatile/versatile.c
++++ b/arch/arm/mach-versatile/versatile.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))
+ 
+ /*
+diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
+index 2b8970d8e5a2..41844ab6aec5 100644
+--- a/arch/arm/include/asm/mach/map.h
++++ b/arch/arm/include/asm/mach/map.h
+@@ -60,6 +60,7 @@ 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/Kconfig b/arch/arm/Kconfig
+index e24a9820e12f..342e1efa583a 100644
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -307,12 +307,23 @@ config MMU
+ 	  Select if you want MMU-based virtualised addressing space
+ 	  support by paged memory management. If unsure, say 'Y'.
+ 
++choice
++	prompt "ARM system type"
++	depends on !MMU
++	default ARM_SINGLE_ARMV7M
++
+ config ARM_SINGLE_ARMV7M
+-	def_bool !MMU
++	bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
+ 	select ARM_NVIC
+ 	select CPU_V7M
+ 	select NO_IOPORT_MAP
+ 
++config ARM_SINGLE_ARM926
++	bool "ARM926 based platforms"
++	select CPU_ARM926T
++
++endchoice
++
+ config ARCH_MMAP_RND_BITS_MIN
+ 	default 8
+ 
+diff --git a/arch/arm/mach-versatile/Kconfig b/arch/arm/mach-versatile/Kconfig
+index b1519b4dc03a..2f1bf95daeb0 100644
+--- a/arch/arm/mach-versatile/Kconfig
++++ b/arch/arm/mach-versatile/Kconfig
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ config ARCH_VERSATILE
+ 	bool "ARM Ltd. Versatile family"
+-	depends on ARCH_MULTI_V5
++	depends on ARCH_MULTI_V5 || ARM_SINGLE_ARM926
+ 	depends on CPU_LITTLE_ENDIAN
+ 	select ARM_AMBA
+ 	select ARM_TIMER_SP804
+-- 
+2.25.1
diff --git a/target/linux/patches/6.6.48/hppa-cross-compile.patch b/target/linux/patches/6.6.48/hppa-cross-compile.patch
new file mode 100644
index 000000000..51c24fff2
--- /dev/null
+++ b/target/linux/patches/6.6.48/hppa-cross-compile.patch
@@ -0,0 +1,12 @@
+diff -Nur linux-6.6.22.orig/arch/parisc/Makefile linux-6.6.22/arch/parisc/Makefile
+--- linux-6.6.22.orig/arch/parisc/Makefile	2024-03-15 19:25:07.000000000 +0100
++++ linux-6.6.22/arch/parisc/Makefile	2024-04-16 03:57:37.515308996 +0200
+@@ -41,7 +41,7 @@
+ 
+ # Set default 32 bits cross compilers for vdso
+ CC_ARCHES_32 = hppa hppa2.0 hppa1.1
+-CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu suse-linux
++CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu suse-linux openadk-linux-uclibc
+ CROSS32_COMPILE := $(call cc-cross-prefix, \
+ 	$(foreach a,$(CC_ARCHES_32), \
+ 	$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
diff --git a/target/linux/patches/6.6.48/macsonic.patch b/target/linux/patches/6.6.48/macsonic.patch
new file mode 100644
index 000000000..51e76113b
--- /dev/null
+++ b/target/linux/patches/6.6.48/macsonic.patch
@@ -0,0 +1,11 @@
+diff -Nur linux-6.6.22.orig/drivers/net/ethernet/natsemi/Kconfig linux-6.6.22/drivers/net/ethernet/natsemi/Kconfig
+--- linux-6.6.22.orig/drivers/net/ethernet/natsemi/Kconfig	2024-03-15 19:25:07.000000000 +0100
++++ linux-6.6.22/drivers/net/ethernet/natsemi/Kconfig	2024-04-16 10:16:50.352443898 +0200
+@@ -19,6 +19,7 @@
+ config MACSONIC
+ 	tristate "Macintosh SONIC based ethernet (onboard, NuBus, LC, CS)"
+ 	depends on MAC
++	select BITREVERSE
+ 	help
+ 	  Support for NatSemi SONIC based Ethernet devices.  This includes
+ 	  the onboard Ethernet in many Quadras as well as some LC-PDS,