Commit 7ec80311 authored by David Howells's avatar David Howells Committed by Linus Torvalds

[PATCH] FRV: Fujitsu FR-V CPU arch implementation part 1

The attached patches provides part 1 of an architecture implementation
for the Fujitsu FR-V CPU series, configurably as Linux or uClinux.
Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2b837a9b
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
config FRV
bool
default y
config UID16
bool
default y
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_FIND_NEXT_BIT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default n
config GENERIC_HARDIRQS
bool
default n
mainmenu "Fujitsu FR-V Kernel Configuration"
source "init/Kconfig"
menu "Fujitsu FR-V system setup"
config MMU
bool "MMU support"
help
This options switches on and off support for the FR-V MMU
(effectively switching between vmlinux and uClinux). Not all FR-V
CPUs support this. Currently only the FR451 has a sufficiently
featured MMU.
config FRV_OUTOFLINE_ATOMIC_OPS
bool "Out-of-line the FRV atomic operations"
default n
help
Setting this option causes the FR-V atomic operations to be mostly
implemented out-of-line.
See Documentation/fujitsu/frv/atomic-ops.txt for more information.
config HIGHMEM
bool "High memory support"
depends on MMU
default y
help
If you wish to use more than 256MB of memory with your MMU based
system, you will need to select this option. The kernel can only see
the memory between 0xC0000000 and 0xD0000000 directly... everything
else must be kmapped.
The arch is, however, capable of supporting up to 3GB of SDRAM.
config HIGHPTE
bool "Allocate page tables in highmem"
depends on HIGHMEM
default y
help
The VM uses one page of memory for each page table. For systems
with a lot of RAM, this can be wasteful of precious low memory.
Setting this option will put user-space page tables in high memory.
choice
prompt "uClinux kernel load address"
depends on !MMU
default UCPAGE_OFFSET_C0000000
help
This option sets the base address for the uClinux kernel. The kernel
will rearrange the SDRAM layout to start at this address, and move
itself to start there. It must be greater than 0, and it must be
sufficiently less than 0xE0000000 that the SDRAM does not intersect
the I/O region.
The base address must also be aligned such that the SDRAM controller
can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
config UCPAGE_OFFSET_20000000
bool "0x20000000"
config UCPAGE_OFFSET_40000000
bool "0x40000000"
config UCPAGE_OFFSET_60000000
bool "0x60000000"
config UCPAGE_OFFSET_80000000
bool "0x80000000"
config UCPAGE_OFFSET_A0000000
bool "0xA0000000"
config UCPAGE_OFFSET_C0000000
bool "0xC0000000 (Recommended)"
endchoice
config PROTECT_KERNEL
bool "Protect core kernel against userspace"
depends on !MMU
default y
help
Selecting this option causes the uClinux kernel to change the
permittivity of DAMPR register covering the core kernel image to
prevent userspace accessing the underlying memory directly.
choice
prompt "CPU Caching mode"
default FRV_DEFL_CACHE_WBACK
help
This option determines the default caching mode for the kernel.
Write-Back caching mode involves the all reads and writes causing
the affected cacheline to be read into the cache first before being
operated upon. Memory is not then updated by a write until the cache
is filled and a cacheline needs to be displaced from the cache to
make room. Only at that point is it written back.
Write-Behind caching is similar to Write-Back caching, except that a
write won't fetch a cacheline into the cache if there isn't already
one there; it will write directly to memory instead.
Write-Through caching only fetches cachelines from memory on a
read. Writes always get written directly to memory. If the affected
cacheline is also in cache, it will be updated too.
The final option is to turn of caching entirely.
Note that not all CPUs support Write-Behind caching. If the CPU on
which the kernel is running doesn't, it'll fall back to Write-Back
caching.
config FRV_DEFL_CACHE_WBACK
bool "Write-Back"
config FRV_DEFL_CACHE_WBEHIND
bool "Write-Behind"
config FRV_DEFL_CACHE_WTHRU
bool "Write-Through"
config FRV_DEFL_CACHE_DISABLED
bool "Disabled"
endchoice
menu "CPU core support"
config CPU_FR401
bool "Include FR401 core support"
depends on !MMU
default y
help
This enables support for the FR401, FR401A and FR403 CPUs
config CPU_FR405
bool "Include FR405 core support"
depends on !MMU
default y
help
This enables support for the FR405 CPU
config CPU_FR451
bool "Include FR451 core support"
default y
help
This enables support for the FR451 CPU
config CPU_FR451_COMPILE
bool "Specifically compile for FR451 core"
depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
default y
help
This causes appropriate flags to be passed to the compiler to
optimise for the FR451 CPU
config CPU_FR551
bool "Include FR551 core support"
depends on !MMU
default y
help
This enables support for the FR555 CPU
config CPU_FR551_COMPILE
bool "Specifically compile for FR551 core"
depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
default y
help
This causes appropriate flags to be passed to the compiler to
optimise for the FR555 CPU
endmenu
choice
prompt "System support"
default MB93091_VDK
config MB93091_VDK
bool "MB93091 CPU board with or without motherboard"
config MB93093_PDK
bool "MB93093 PDK unit"
endchoice
if MB93091_VDK
choice
prompt "Motherboard support"
default MB93090_MB00
config MB93090_MB00
bool "Use the MB93090-MB00 motherboard"
help
Select this option if the MB93091 CPU board is going to be used with
a MB93090-MB00 VDK motherboard
config MB93091_NO_MB
bool "Use standalone"
help
Select this option if the MB93091 CPU board is going to be used
without a motherboard
endchoice
endif
choice
prompt "GP-Relative data support"
default GPREL_DATA_8
help
This option controls what data, if any, should be placed in the GP
relative data sections. Using this means that the compiler can
generate accesses to the data using GR16-relative addressing which
is faster than absolute instructions and saves space (2 instructions
per access).
However, the GPREL region is limited in size because the immediate
value used in the load and store instructions is limited to a 12-bit
signed number.
So if the linker starts complaining that accesses to GPREL data are
out of range, try changing this option from the default.
Note that modules will always be compiled with this feature disabled
as the module data will not be in range of the GP base address.
config GPREL_DATA_8
bool "Put data objects of up to 8 bytes into GP-REL"
config GPREL_DATA_4
bool "Put data objects of up to 4 bytes into GP-REL"
config GPREL_DATA_NONE
bool "Don't use GP-REL"
endchoice
config PCI
bool "Use PCI"
depends on MB93090_MB00
default y
help
Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
onboard. If you have one of these boards and you wish to use the PCI
facilities, say Y here.
The PCI-HOWTO, available from
<http://www.tldp.org/docs.html#howto>, contains valuable
information about which PCI hardware does work under Linux and which
doesn't.
config RESERVE_DMA_COHERENT
bool "Reserve DMA coherent memory"
depends on PCI && !MMU
default y
help
Many PCI drivers require access to uncached memory for DMA device
communications (such as is done with some Ethernet buffer rings). If
a fully featured MMU is available, this can be done through page
table settings, but if not, a region has to be set aside and marked
with a special DAMPR register.
Setting this option causes uClinux to set aside a portion of the
available memory for use in this manner. The memory will then be
unavailable for normal kernel use.
source "drivers/pci/Kconfig"
config PCMCIA
tristate "Use PCMCIA"
help
Say Y here if you want to attach PCMCIA- or PC-cards to your FR-V
board. These are credit-card size devices such as network cards,
modems or hard drives often used with laptops computers. There are
actually two varieties of these cards: the older 16 bit PCMCIA cards
and the newer 32 bit CardBus cards. If you want to use CardBus
cards, you need to say Y here and also to "CardBus support" below.
To use your PC-cards, you will need supporting software from David
Hinds pcmcia-cs package (see the file <file:Documentation/Changes>
for location). Please also read the PCMCIA-HOWTO, available from
<http://www.tldp.org/docs.html#howto>.
To compile this driver as modules, choose M here: the
modules will be called pcmcia_core and ds.
#config MATH_EMULATION
# bool "Math emulation support (EXPERIMENTAL)"
# depends on EXPERIMENTAL
# help
# At some point in the future, this will cause floating-point math
# instructions to be emulated by the kernel on machines that lack a
# floating-point math coprocessor. Thrill-seekers and chronically
# sleep-deprived psychotic hacker types can say Y now, everyone else
# should probably wait a while.
menu "Power management options"
source kernel/power/Kconfig
endmenu
endmenu
menu "Executable formats"
source "fs/Kconfig.binfmt"
endmenu
source "drivers/Kconfig"
source "fs/Kconfig"
menu "Kernel hacking"
config DEBUG_KERNEL
bool "Kernel debugging"
help
Say Y here if you are developing drivers or trying to debug and
identify kernel problems.
config EARLY_PRINTK
bool "Early printk"
depends on EMBEDDED && DEBUG_KERNEL
default n
help
Write kernel log output directly into the VGA buffer or to a serial
port.
This is useful for kernel debugging when your machine crashes very
early before the console code is initialized. For normal operation
it is not recommended because it looks ugly and doesn't cooperate
with klogd/syslogd or the X server. You should normally N here,
unless you want to debug such a crash.
config DEBUG_STACKOVERFLOW
bool "Check for stack overflows"
depends on DEBUG_KERNEL
config DEBUG_SLAB
bool "Debug memory allocations"
depends on DEBUG_KERNEL
help
Say Y here to have the kernel do limited verification on memory
allocation as well as poisoning memory on free to catch use of freed
memory.
config MAGIC_SYSRQ
bool "Magic SysRq key"
depends on DEBUG_KERNEL
help
If you say Y here, you will have some control over the system even
if the system crashes for example during kernel debugging (e.g., you
will be able to flush the buffer cache to disk, reboot the system
immediately or dump some status information). This is accomplished
by pressing various keys while holding SysRq (Alt+PrintScreen). It
also works on a serial console (on PC hardware at least), if you
send a BREAK and then within 5 seconds a command keypress. The
keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
unless you really know what this hack does.
config DEBUG_SPINLOCK
bool "Spinlock debugging"
depends on DEBUG_KERNEL
help
Say Y here and build SMP to catch missing spinlock initialization
and certain other kinds of spinlock errors commonly made. This is
best used in conjunction with the NMI watchdog so that spinlock
deadlocks are also debuggable.
config DEBUG_SPINLOCK_SLEEP
bool "Sleep-inside-spinlock checking"
depends on DEBUG_KERNEL
help
If you say Y here, various routines which may sleep will become very
noisy if they are called with a spinlock held.
config DEBUG_PAGEALLOC
bool "Page alloc debugging"
depends on DEBUG_KERNEL
help
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types
of memory corruptions.
config DEBUG_HIGHMEM
bool "Highmem debugging"
depends on DEBUG_KERNEL && HIGHMEM
help
This options enables addition error checking for high memory systems.
Disable for production systems.
config DEBUG_INFO
bool "Compile the kernel with debug info"
depends on DEBUG_KERNEL
help
If you say Y here the resulting kernel image will include
debugging info resulting in a larger kernel image.
Say Y here only if you plan to use gdb to debug the kernel.
If you don't debug the kernel, you can say N.
config DEBUG_BUGVERBOSE
bool "Verbose BUG() reporting"
depends on DEBUG_KERNEL
config FRAME_POINTER
bool "Compile the kernel with frame pointers"
depends on DEBUG_KERNEL
help
If you say Y here the resulting kernel image will be slightly larger
and slower, but it will give very useful debugging information.
If you don't debug the kernel, you can say N, but we may not be able
to solve problems without frame pointers.
config GDBSTUB
bool "Remote GDB kernel debugging"
depends on DEBUG_KERNEL
select DEBUG_INFO
select FRAME_POINTER
help
If you say Y here, it will be possible to remotely debug the kernel
using gdb. This enlarges your kernel ELF image disk size by several
megabytes and requires a machine with more than 16 MB, better 32 MB
RAM to avoid excessive linking time. This is only useful for kernel
hackers. If unsure, say N.
choice
prompt "GDB stub port"
default GDBSTUB_UART1
depends on GDBSTUB
help
Select the on-CPU port used for GDB-stub
config GDBSTUB_UART0
bool "/dev/ttyS0"
config GDBSTUB_UART1
bool "/dev/ttyS1"
endchoice
config GDBSTUB_IMMEDIATE
bool "Break into GDB stub immediately"
depends on GDBSTUB
help
If you say Y here, GDB stub will break into the program as soon as
possible, leaving the program counter at the beginning of
start_kernel() in init/main.c.
config GDB_CONSOLE
bool "Console output to GDB"
depends on KGDB
help
If you are using GDB for remote debugging over a serial port and
would like kernel messages to be formatted into GDB $O packets so
that GDB prints them as program output, say 'Y'.
endmenu
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
#
# frv/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (c) 2003, 2004 Red Hat Inc.
# - Written by David Howells <dhowells@redhat.com>
# - Derived from arch/m68knommu/Makefile,
# Copyright (c) 1999,2001 D. Jeff Dionne <jeff@lineo.ca>,
# Rt-Control Inc. / Lineo, Inc.
#
# Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uclinux.org>,
# Kenneth Albanowski <kjahds@kjahds.com>,
#
# Based on arch/m68k/Makefile:
# Copyright (C) 1994 by Hamish Macdonald
#
CCSPECS := $(shell $(CC) -v 2>&1 | grep "^Reading specs from " | head -1 | cut -c20-)
CCDIR := $(strip $(patsubst %/specs,%,$(CCSPECS)))
CPUCLASS := fr400
# test for cross compiling
COMPILE_ARCH = $(shell uname -m)
ifdef CONFIG_MMU
UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
else
UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
endif
ARCHMODFLAGS += -G0 -mlong-calls
ifdef CONFIG_GPREL_DATA_8
CFLAGS += -G8
else
ifdef CONFIG_GPREL_DATA_4
CFLAGS += -G4
else
ifdef CONFIG_GPREL_DATA_NONE
CFLAGS += -G0
endif
endif
endif
#LDFLAGS_vmlinux := -Map linkmap.txt
ifdef CONFIG_GC_SECTIONS
CFLAGS += -ffunction-sections -fdata-sections
LINKFLAGS += --gc-sections
endif
ifndef CONFIG_FRAME_POINTER
CFLAGS += -mno-linked-fp
endif
ifdef CONFIG_CPU_FR451_COMPILE
CFLAGS += -mcpu=fr450
AFLAGS += -mcpu=fr450
ASFLAGS += -mcpu=fr450
else
ifdef CONFIG_CPU_FR551_COMPILE
CFLAGS += -mcpu=fr550
AFLAGS += -mcpu=fr550
ASFLAGS += -mcpu=fr550
else
CFLAGS += -mcpu=fr400
AFLAGS += -mcpu=fr400
ASFLAGS += -mcpu=fr400
endif
endif
# pretend the kernel is going to run on an FR400 with no media-fp unit
# - reserve CC3 for use with atomic ops
# - all the extra registers are dealt with only at context switch time
CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media
CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15
AFLAGS += -mno-fdpic
ASFLAGS += -mno-fdpic
# make sure the .S files get compiled with debug info
# and disable optimisations that are unhelpful whilst debugging
ifdef CONFIG_DEBUG_INFO
CFLAGS += -O1
AFLAGS += -Wa,--gdwarf2
ASFLAGS += -Wa,--gdwarf2
endif
head-y := arch/frv/kernel/head.o arch/frv/kernel/init_task.o
core-y += arch/frv/kernel/ arch/frv/mm/
libs-y += arch/frv/lib/
core-$(CONFIG_MB93090_MB00) += arch/frv/mb93090-mb00/
all: Image
Image: vmlinux
$(Q)$(MAKE) $(build)=arch/frv/boot $@
bootstrap:
$(Q)$(MAKEBOOT) bootstrap
archmrproper:
$(Q)$(MAKE) -C arch/frv/boot mrproper
archclean:
$(Q)$(MAKE) -C arch/frv/boot clean
archdep: scripts/mkdep symlinks
$(Q)$(MAKE) -C arch/frv/boot dep
#
# arch/arm/boot/Makefile
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1995-2000 Russell King
#
SYSTEM =$(TOPDIR)/$(LINUX)
ZTEXTADDR = 0x02080000
PARAMS_PHYS = 0x0207c000
INITRD_PHYS = 0x02180000
INITRD_VIRT = 0x02180000
#
# If you don't define ZRELADDR above,
# then it defaults to ZTEXTADDR
#
ifeq ($(ZRELADDR),)
ZRELADDR = $(ZTEXTADDR)
endif
export SYSTEM ZTEXTADDR ZBSSADDR ZRELADDR INITRD_PHYS INITRD_VIRT PARAMS_PHYS
Image: $(obj)/Image
targets: $(obj)/Image
$(obj)/Image: vmlinux FORCE
$(OBJCOPY) -O binary -R .note -R .comment -S vmlinux $@
#$(obj)/Image: $(CONFIGURE) $(SYSTEM)
# $(OBJCOPY) -O binary -R .note -R .comment -g -S $(SYSTEM) $@
bzImage: zImage
zImage: $(CONFIGURE) compressed/$(LINUX)
$(OBJCOPY) -O binary -R .note -R .comment -S compressed/$(LINUX) $@
bootpImage: bootp/bootp
$(OBJCOPY) -O binary -R .note -R .comment -S bootp/bootp $@
compressed/$(LINUX): $(TOPDIR)/$(LINUX) dep
@$(MAKE) -C compressed $(LINUX)
bootp/bootp: zImage initrd
@$(MAKE) -C bootp bootp
initrd:
@test "$(INITRD_VIRT)" != "" || (echo This architecture does not support INITRD; exit -1)
@test "$(INITRD)" != "" || (echo You must specify INITRD; exit -1)
#
# installation
#
install: $(CONFIGURE) Image
sh ./install.sh $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) Image $(TOPDIR)/System.map "$(INSTALL_PATH)"
zinstall: $(CONFIGURE) zImage
sh ./install.sh $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) zImage $(TOPDIR)/System.map "$(INSTALL_PATH)"
#
# miscellany
#
mrproper clean:
$(RM) Image zImage bootpImage
# @$(MAKE) -C compressed clean
# @$(MAKE) -C bootp clean
dep:
/* ld script to make FRV Linux kernel -*- c -*-
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
*/
OUTPUT_FORMAT("elf32-frv", "elf32-frv", "elf32-frv")
OUTPUT_ARCH(frv)
ENTRY(_start)
#include <asm-generic/vmlinux.lds.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/cache.h>
#include <asm/thread_info.h>
jiffies = jiffies_64 + 4;
__page_offset = 0xc0000000; /* start of area covered by struct pages */
__kernel_image_start = __page_offset; /* address at which kernel image resides */
SECTIONS
{
. = __kernel_image_start;
/* discardable initialisation code and data */
. = ALIGN(PAGE_SIZE); /* Init code and data */
__init_begin = .;
_sinittext = .;
.init.text : {
*(.text.head)
#ifndef CONFIG_DEBUG_INFO
*(.init.text)
*(.exit.text)
*(.exit.data)
*(.exitcall.exit)
#endif
}
_einittext = .;
.init.data : { *(.init.data) }
. = ALIGN(8);
__setup_start = .;
.setup.init : { KEEP(*(.init.setup)) }
__setup_end = .;
__initcall_start = .;
.initcall.init : {
*(.initcall1.init)
*(.initcall2.init)
*(.initcall3.init)
*(.initcall4.init)
*(.initcall5.init)
*(.initcall6.init)
*(.initcall7.init)
}
__initcall_end = .;
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4);
__alt_instructions = .;
.altinstructions : { *(.altinstructions) }
__alt_instructions_end = .;
.altinstr_replacement : { *(.altinstr_replacement) }
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
__per_cpu_end = .;
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
__initramfs_end = .;
. = ALIGN(THREAD_SIZE);
__init_end = .;
/* put sections together that have massive alignment issues */
. = ALIGN(THREAD_SIZE);
.data.init_task : {
/* init task record & stack */
*(.data.init_task)
}
.trap : {
/* trap table management - read entry-table.S before modifying */
. = ALIGN(8192);
__trap_tables = .;
*(.trap.user)
*(.trap.kernel)
. = ALIGN(4096);
*(.trap.break)
}
. = ALIGN(4096);
.data.page_aligned : { *(.data.idt) }
. = ALIGN(L1_CACHE_BYTES);
.data.cacheline_aligned : { *(.data.cacheline_aligned) }
/* Text and read-only data */
. = ALIGN(4);
_text = .;
_stext = .;
.text : {
*(
.text.start .text .text.*
#ifdef CONFIG_DEBUG_INFO
.init.text
.exit.text
.exitcall.exit
#endif
)
SCHED_TEXT
*(.fixup)
*(.gnu.warning)
*(.exitcall.exit)
} = 0x9090
_etext = .; /* End of text section */
RODATA
.rodata : {
*(.trap.vector)
/* this clause must not be modified - the ordering and adjacency are imperative */
__trap_fixup_tables = .;
*(.trap.fixup.user .trap.fixup.kernel)
}
. = ALIGN(8); /* Exception table */
__start___ex_table = .;
__ex_table : { KEEP(*(__ex_table)) }
__stop___ex_table = .;
_sdata = .;
.data : { /* Data */
*(.data .data.*)
*(.exit.data)
CONSTRUCTORS
}
_edata = .; /* End of data section */
/* GP section */
. = ALIGN(L1_CACHE_BYTES);
_gp = . + 2048;
PROVIDE (gp = _gp);
.sdata : { *(.sdata .sdata.*) }
/* BSS */
. = ALIGN(L1_CACHE_BYTES);
__bss_start = .;
.sbss : { *(.sbss .sbss.*) }
.bss : { *(.bss .bss.*) }
.bss.stack : { *(.bss) }
__bss_stop = .;
_end = . ;
. = ALIGN(PAGE_SIZE);
__kernel_image_end = .;
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.debug_line 0 : { *(.debug_line) }
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_aranges 0 : { *(.debug_aranges) }
.debug_frame 0 : { *(.debug_frame) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_str 0 : { *(.debug_str) }
.debug_ranges 0 : { *(.debug_ranges) }
.comment 0 : { *(.comment) }
}
__kernel_image_size_no_bss = __bss_start - __kernel_image_start;
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