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MIPS: Fix and enhance built-in kernel command line 

Currently, MIPS kernels silently overwrite kernel command-line parameters
hardcoded in CONFIG_CMDLINE by the ones received from firmware.  Therefore,
using firmware remains the only reliable method to transfer the
command-line parameters, which is not always desirable or convenient, and
the CONFIG_CMDLINE option is thereby effectively rendered useless.

This patch fixes the problem described above and introduces a more flexible
scheme of handling the kernel command line, in a manner identical to what is
currently used for x86.  The default behavior, i.e. when CONFIG_CMDLINE_BOOL
is not defined, retains the existing semantics, and firmware command-line
arguments override the hardcoded ones.

[Ralf: I fixed up all the defconfig files so the stay unaffected by this
change.]

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/689/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Dmitri Vorobiev 2009-11-21 22:34:41 +02:00 committed by Ralf Baechle
parent de4148f3ef
commit 6acc7d485c
48 changed files with 123 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
arch/mips/Kconfig.debug
View File

@ -20,15 +20,52 @@ config EARLY_PRINTK
doesn't cooperate with an X server. You should normally say N here,
unless you want to debug such a crash.
config CMDLINE_BOOL
bool "Built-in kernel command line"
default n
help
For most systems, it is firmware or second stage bootloader that
by default specifies the kernel command line options. However,
it might be necessary or advantageous to either override the
default kernel command line or add a few extra options to it.
For such cases, this option allows you to hardcode your own
command line options directly into the kernel. For that, you
should choose 'Y' here, and fill in the extra boot arguments
in CONFIG_CMDLINE.
The built-in options will be concatenated to the default command
line if CMDLINE_OVERRIDE is set to 'N'. Otherwise, the default
command line will be ignored and replaced by the built-in string.
Most MIPS systems will normally expect 'N' here and rely upon
the command line from the firmware or the second-stage bootloader.
config CMDLINE
string "Default kernel command string"
depends on CMDLINE_BOOL
default ""
help
On some platforms, there is currently no way for the boot loader to
pass arguments to the kernel. For these platforms, you can supply
some command-line options at build time by entering them here. In
other cases you can specify kernel args so that you don't have
to set them up in board prom initialization routines.
pass arguments to the kernel. For these platforms, and for the cases
when you want to add some extra options to the command line or ignore
the default command line, you can supply some command-line options at
build time by entering them here. In other cases you can specify
kernel args so that you don't have to set them up in board prom
initialization routines.
For more information, see the CMDLINE_BOOL and CMDLINE_OVERRIDE
options.
config CMDLINE_OVERRIDE
bool "Built-in command line overrides firware arguments"
default n
depends on CMDLINE_BOOL
help
By setting this option to 'Y' you will have your kernel ignore
command line arguments from firmware or second stage bootloader.
Instead, the built-in command line will be used exclusively.
Normally, you will choose 'N' here.
config DEBUG_STACK_USAGE
bool "Enable stack utilization instrumentation"

2
arch/mips/configs/ar7_defconfig
View File

@ -1051,7 +1051,9 @@ CONFIG_TRACING_SUPPORT=y
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="rootfstype=squashfs,jffs2"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/bcm47xx_defconfig
View File

@ -1852,7 +1852,7 @@ CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/bcm63xx_defconfig
View File

@ -941,7 +941,9 @@ CONFIG_TRACING_SUPPORT=y
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0,115200"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/bigsur_defconfig
View File

@ -1236,7 +1236,7 @@ CONFIG_DEBUG_MUTEXES=y
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SB1XXX_CORELIS is not set
# CONFIG_RUNTIME_DEBUG is not set

2
arch/mips/configs/capcella_defconfig
View File

@ -782,7 +782,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="mem=32M console=ttyVR0,38400"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/cavium-octeon_defconfig
View File

@ -820,7 +820,7 @@ CONFIG_SYSCTL_SYSCALL_CHECK=y
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set

2
arch/mips/configs/cobalt_defconfig
View File

@ -1125,7 +1125,7 @@ CONFIG_FRAME_WARN=1024
# CONFIG_SLUB_STATS is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/db1000_defconfig
View File

@ -1089,7 +1089,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/db1100_defconfig
View File

@ -1089,7 +1089,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/db1200_defconfig
View File

@ -1171,7 +1171,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="mem=48M"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/db1500_defconfig
View File

@ -1389,7 +1389,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/db1550_defconfig
View File

@ -1206,7 +1206,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/decstation_defconfig
View File

@ -881,7 +881,7 @@ CONFIG_MAGIC_SYSRQ=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/e55_defconfig
View File

@ -560,7 +560,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyVR0,19200 ide0=0x1f0,0x3f6,40 mem=8M"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/fuloong2e_defconfig
View File

@ -1710,7 +1710,7 @@ CONFIG_TRACING_SUPPORT=y
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/ip22_defconfig
View File

@ -1187,7 +1187,7 @@ CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DYNAMIC_PRINTK_DEBUG=y
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/ip27_defconfig
View File

@ -939,7 +939,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/ip28_defconfig
View File

@ -815,7 +815,7 @@ CONFIG_MAGIC_SYSRQ=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/ip32_defconfig
View File

@ -1125,7 +1125,7 @@ CONFIG_SYSCTL_SYSCALL_CHECK=y
# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/jazz_defconfig
View File

@ -1373,7 +1373,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/jmr3927_defconfig
View File

@ -834,7 +834,7 @@ CONFIG_SYSCTL_SYSCALL_CHECK=y
# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/lasat_defconfig
View File

@ -797,7 +797,7 @@ CONFIG_MAGIC_SYSRQ=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/lemote2f_defconfig
View File

@ -1707,7 +1707,7 @@ CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/malta_defconfig
View File

@ -1590,7 +1590,7 @@ CONFIG_FRAME_WARN=1024
# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/markeins_defconfig
View File

@ -1365,7 +1365,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0,115200 mem=192m ip=bootp root=/dev/nfs rw"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/mipssim_defconfig
View File

@ -634,7 +634,9 @@ CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="nfsroot=192.168.192.169:/u1/mipsel,timeo=20 ip=dhcp"
# CONFIG_CMDLINE_OVERRIDE is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set

2
arch/mips/configs/mpc30x_defconfig
View File

@ -816,7 +816,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="mem=32M console=ttyVR0,19200 ide0=0x170,0x376,73"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/msp71xx_defconfig
View File

@ -1411,7 +1411,7 @@ CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set
# CONFIG_MIPS_UNCACHED is not set

2
arch/mips/configs/mtx1_defconfig
View File

@ -3017,7 +3017,7 @@ CONFIG_MAGIC_SYSRQ=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/pb1100_defconfig
View File

@ -1082,7 +1082,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/pb1500_defconfig
View File

@ -1199,7 +1199,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/pb1550_defconfig
View File

@ -1192,7 +1192,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/pnx8335-stb225_defconfig
View File

@ -1033,7 +1033,7 @@ CONFIG_FRAME_WARN=1024
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
# CONFIG_KERNEL_TESTS is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/pnx8550-jbs_defconfig
View File

@ -1214,7 +1214,9 @@ CONFIG_DEBUG_MUTEXES=y
CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS1,38400n8 root=/dev/nfs ip=bootp"
# CONFIG_CMDLINE_OVERRIDE is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set

2
arch/mips/configs/pnx8550-stb810_defconfig
View File

@ -1204,7 +1204,9 @@ CONFIG_DEBUG_SLAB=y
CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS1,38400n8 root=/dev/nfs ip=bootp"
# CONFIG_CMDLINE_OVERRIDE is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set

2
arch/mips/configs/powertv_defconfig
View File

@ -1418,7 +1418,9 @@ CONFIG_BRANCH_PROFILE_NONE=y
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_KMEMCHECK is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="rw dhash_entries=1024 ihash_entries=1024 ip=10.0.1.3:10.0.1.1:10.0.1.1:255.255.255.0:zeus:eth0: root=/dev/nfs nfsroot=/nfsroot/cramfs,wsize=512,rsize=512,tcp nokgdb console=ttyUSB0,115200 memsize=252M"
# CONFIG_CMDLINE_OVERRIDE is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set

2
arch/mips/configs/rb532_defconfig
View File

@ -1203,7 +1203,7 @@ CONFIG_FRAME_WARN=1024
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/rbtx49xx_defconfig
View File

@ -1061,7 +1061,7 @@ CONFIG_TRACING_SUPPORT=y
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/rm200_defconfig
View File

@ -1693,7 +1693,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
#
# Security options

2
arch/mips/configs/sb1250-swarm_defconfig
View File

@ -960,7 +960,7 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_SB1XXX_CORELIS is not set
#

2
arch/mips/configs/tb0219_defconfig
View File

@ -891,7 +891,9 @@ CONFIG_FRAME_WARN=1024
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="cca=3 mem=64M console=ttyVR0,115200 ip=any root=/dev/nfs"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/tb0226_defconfig
View File

@ -894,7 +894,9 @@ CONFIG_FRAME_WARN=1024
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="cca=3 mem=32M console=ttyVR0,115200"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/tb0287_defconfig
View File

@ -1076,7 +1076,9 @@ CONFIG_FRAME_WARN=1024
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
# CONFIG_SAMPLES is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="cca=3 mem=64M console=ttyVR0,115200 ip=any root=/dev/nfs"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/workpad_defconfig
View File

@ -754,7 +754,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyVR0,19200 ide0=0x170,0x376,49 mem=16M"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/wrppmc_defconfig
View File

@ -886,7 +886,9 @@ CONFIG_ENABLE_MUST_CHECK=y
# CONFIG_DEBUG_KERNEL is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyS0,115200n8"
# CONFIG_CMDLINE_OVERRIDE is not set
#
# Security options

2
arch/mips/configs/yosemite_defconfig
View File

@ -823,7 +823,7 @@ CONFIG_DEBUG_MUTEXES=y
CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_CROSSCOMPILE=y
CONFIG_CMDLINE=""
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_RUNTIME_DEBUG is not set

24
arch/mips/kernel/setup.c
View File

@ -58,8 +58,12 @@ EXPORT_SYMBOL(mips_machtype);
struct boot_mem_map boot_mem_map;
static char command_line[COMMAND_LINE_SIZE];
char arcs_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
static char __initdata command_line[COMMAND_LINE_SIZE];
char __initdata arcs_cmdline[COMMAND_LINE_SIZE];
#ifdef CONFIG_CMDLINE_BOOL
static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
#endif
/*
* mips_io_port_base is the begin of the address space to which x86 style
@ -458,8 +462,20 @@ static void __init arch_mem_init(char **cmdline_p)
pr_info("Determined physical RAM map:\n");
print_memory_map();
strlcpy(command_line, arcs_cmdline, sizeof(command_line));
strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
#ifdef CONFIG_CMDLINE_BOOL
#ifdef CONFIG_CMDLINE_OVERRIDE
strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
#else
if (builtin_cmdline[0]) {
strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
strlcat(arcs_cmdline, builtin_cmdline, COMMAND_LINE_SIZE);
}
strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
#endif
#else
strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
#endif
strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;