Re: [PATCH 4/8] CMDLINE: powerpc: convert to generic builtin command line

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Le 30/03/2021 à 19:56, Daniel Walker a écrit :

This updates the powerpc code to use the CONFIG_GENERIC_CMDLINE
option.

This includes a scripted mass convert of the config files to use
the new generic cmdline. There is a bit of a trim effect here.
It would seems that some of the config haven't been trimmed in
a while.
Sorry, this patch is not acceptable as is, the default for powerpc is CMDLINE_FROM_BOOTLOADER, ie builtin-cmdline is taken if and only if none is provided by the bootloader. 

As far as I understand, that disappear with this patch.



The bash script used to convert is as follows,

if [[ -z "$1" || -z "$2" ]]; then
         echo "Two arguments are needed."
         exit 1
fi
mkdir $1
cp $2 $1/.config
sed -i 's/CONFIG_CMDLINE=/CONFIG_CMDLINE_BOOL=y\nCONFIG_CMDLINE_PREPEND=/g' $1/.config
make ARCH=$1 O=$1 olddefconfig
make ARCH=$1 O=$1 savedefconfig
cp $1/defconfig $2
rm -Rf $1

Cc: xe-linux-external@xxxxxxxxx
Signed-off-by: Ruslan Ruslichenko <rruslich@xxxxxxxxx>
Signed-off-by: Ruslan Bilovol <rbilovol@xxxxxxxxx>
Signed-off-by: Daniel Walker <danielwa@xxxxxxxxx>
---
  arch/powerpc/Kconfig                          | 38 +------------------
  arch/powerpc/configs/44x/fsp2_defconfig       | 32 ++++++++--------
  arch/powerpc/configs/44x/iss476-smp_defconfig | 24 ++++++------
  arch/powerpc/configs/44x/warp_defconfig       | 17 ++++-----
  arch/powerpc/configs/holly_defconfig          | 13 ++++---
  arch/powerpc/configs/mvme5100_defconfig       | 23 +++++------
  arch/powerpc/configs/skiroot_defconfig        | 12 +++---
  arch/powerpc/configs/storcenter_defconfig     | 18 ++++-----
  arch/powerpc/kernel/prom_init.c               | 10 +++--
  9 files changed, 74 insertions(+), 113 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 386ae12d8523..3a19e5b74177 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -167,6 +167,8 @@ config PPC
  	select EDAC_SUPPORT
  	select GENERIC_ATOMIC64			if PPC32
  	select GENERIC_CLOCKEVENTS_BROADCAST	if SMP
+	select GENERIC_CMDLINE
+	select GENERIC_CMDLINE_OF
  	select GENERIC_CMOS_UPDATE
  	select GENERIC_CPU_AUTOPROBE
  	select GENERIC_CPU_VULNERABILITIES	if PPC_BARRIER_NOSPEC
@@ -886,42 +888,6 @@ config PPC_DENORMALISATION
  	  Add support for handling denormalisation of single precision
  	  values.  Useful for bare metal only.  If unsure say Y here.
-config CMDLINE 
-	string "Initial kernel command string"
-	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
-	  most cases you will need to specify the root device here.
-
-choice
-	prompt "Kernel command line type" if CMDLINE != ""
-	default CMDLINE_FROM_BOOTLOADER
-
-config CMDLINE_FROM_BOOTLOADER
-	bool "Use bootloader kernel arguments if available"
-	help
-	  Uses the command-line options passed by the boot loader. If
-	  the boot loader doesn't provide any, the default kernel command
-	  string provided in CMDLINE will be used.
-
-config CMDLINE_EXTEND
-	bool "Extend bootloader kernel arguments"
-	help
-	  The command-line arguments provided by the boot loader will be
-	  appended to the default kernel command string.
-
-config CMDLINE_FORCE
-	bool "Always use the default kernel command string"
-	help
-	  Always use the default kernel command string, even if the boot
-	  loader passes other arguments to the kernel.
-	  This is useful if you cannot or don't want to change the
-	  command-line options your boot loader passes to the kernel.
-
-endchoice
-
  config EXTRA_TARGETS
  	string "Additional default image types"
  	help
diff --git a/arch/powerpc/configs/44x/fsp2_defconfig b/arch/powerpc/configs/44x/fsp2_defconfig
index 8da316e61a08..4993db054589 100644
--- a/arch/powerpc/configs/44x/fsp2_defconfig
+++ b/arch/powerpc/configs/44x/fsp2_defconfig
@@ -1,8 +1,6 @@
-CONFIG_44x=y
  # CONFIG_SWAP is not set
  CONFIG_SYSVIPC=y
  # CONFIG_CROSS_MEMORY_ATTACH is not set
-# CONFIG_FHANDLE is not set
  CONFIG_NO_HZ=y
  CONFIG_HIGH_RES_TIMERS=y
  CONFIG_IKCONFIG=y
@@ -13,23 +11,25 @@ CONFIG_BLK_DEV_INITRD=y
  # CONFIG_RD_XZ is not set
  # CONFIG_RD_LZO is not set
  # CONFIG_RD_LZ4 is not set
+# CONFIG_FHANDLE is not set
  CONFIG_KALLSYMS_ALL=y
  CONFIG_BPF_SYSCALL=y
  CONFIG_EMBEDDED=y
  CONFIG_PROFILING=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="ip=on rw"
+CONFIG_44x=y
  CONFIG_PPC_47x=y
  # CONFIG_EBONY is not set
  CONFIG_FSP2=y
  CONFIG_476FPE_ERR46=y
-CONFIG_SWIOTLB=y
  CONFIG_KEXEC=y
  CONFIG_CRASH_DUMP=y
-CONFIG_CMDLINE="ip=on rw"
  # CONFIG_SUSPEND is not set
-# CONFIG_PCI is not set
+CONFIG_OPROFILE=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
  CONFIG_NET=y
  CONFIG_PACKET=y
  CONFIG_UNIX=y
@@ -46,14 +46,12 @@ CONFIG_MTD=y
  CONFIG_MTD_BLOCK=y
  CONFIG_MTD_JEDECPROBE=y
  CONFIG_MTD_CFI_AMDSTD=y
-CONFIG_MTD_PHYSMAP_OF=y
  CONFIG_BLK_DEV_RAM=y
  CONFIG_BLK_DEV_RAM_SIZE=35000
  # CONFIG_SCSI_PROC_FS is not set
  CONFIG_BLK_DEV_SD=y
  # CONFIG_SCSI_LOWLEVEL is not set
  CONFIG_ATA=y
-# CONFIG_SATA_PMP is not set
  # CONFIG_ATA_SFF is not set
  CONFIG_NETDEVICES=y
  CONFIG_BONDING=m
@@ -62,7 +60,6 @@ CONFIG_IBM_EMAC=m
  # CONFIG_SERIO is not set
  # CONFIG_VT is not set
  # CONFIG_LEGACY_PTYS is not set
-# CONFIG_DEVMEM is not set
  CONFIG_SERIAL_8250=y
  CONFIG_SERIAL_8250_CONSOLE=y
  CONFIG_SERIAL_8250_NR_UARTS=32
@@ -71,6 +68,7 @@ CONFIG_SERIAL_8250_EXTENDED=y
  CONFIG_SERIAL_8250_SHARE_IRQ=y
  CONFIG_SERIAL_OF_PLATFORM=y
  # CONFIG_HW_RANDOM is not set
+# CONFIG_DEVMEM is not set
  CONFIG_I2C=y
  CONFIG_I2C_IBM_IIC=y
  CONFIG_PTP_1588_CLOCK=y
@@ -106,6 +104,12 @@ CONFIG_NFS_V3_ACL=y
  CONFIG_NFS_V4=y
  CONFIG_ROOT_NFS=y
  CONFIG_NLS_DEFAULT="n"
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_PCBC=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_HW is not set
  CONFIG_XZ_DEC=y
  CONFIG_PRINTK_TIME=y
  CONFIG_MESSAGE_LOGLEVEL_DEFAULT=3
@@ -113,9 +117,3 @@ CONFIG_DYNAMIC_DEBUG=y
  CONFIG_DEBUG_INFO=y
  CONFIG_MAGIC_SYSRQ=y
  CONFIG_DETECT_HUNG_TASK=y
-CONFIG_CRYPTO_CBC=y
-CONFIG_CRYPTO_ECB=y
-CONFIG_CRYPTO_PCBC=y
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_HW is not set
diff --git a/arch/powerpc/configs/44x/iss476-smp_defconfig b/arch/powerpc/configs/44x/iss476-smp_defconfig
index c11e777b2f3d..b8d97061517a 100644
--- a/arch/powerpc/configs/44x/iss476-smp_defconfig
+++ b/arch/powerpc/configs/44x/iss476-smp_defconfig
@@ -1,5 +1,3 @@
-CONFIG_44x=y
-CONFIG_SMP=y
  CONFIG_SYSVIPC=y
  CONFIG_POSIX_MQUEUE=y
  CONFIG_LOG_BUF_SHIFT=14
@@ -7,19 +5,22 @@ CONFIG_BLK_DEV_INITRD=y
  CONFIG_EXPERT=y
  CONFIG_KALLSYMS_ALL=y
  CONFIG_PROFILING=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="root=/dev/issblk0"
+CONFIG_44x=y
+CONFIG_SMP=y
  CONFIG_PPC_47x=y
  # CONFIG_EBONY is not set
  CONFIG_ISS4xx=y
  CONFIG_HZ_100=y
  CONFIG_MATH_EMULATION=y
  CONFIG_IRQ_ALL_CPUS=y
-CONFIG_CMDLINE="root=/dev/issblk0"
-# CONFIG_PCI is not set
  CONFIG_ADVANCED_OPTIONS=y
  CONFIG_DYNAMIC_MEMSTART=y
+CONFIG_OPROFILE=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
  CONFIG_NET=y
  CONFIG_PACKET=y
  CONFIG_UNIX=y
@@ -33,7 +34,6 @@ CONFIG_MTD=y
  CONFIG_MTD_BLOCK=y
  CONFIG_MTD_JEDECPROBE=y
  CONFIG_MTD_CFI_AMDSTD=y
-CONFIG_MTD_PHYSMAP_OF=y
  CONFIG_BLK_DEV_RAM=y
  CONFIG_BLK_DEV_RAM_SIZE=35000
  # CONFIG_INPUT is not set
@@ -56,13 +56,13 @@ CONFIG_PROC_KCORE=y
  CONFIG_TMPFS=y
  CONFIG_CRAMFS=y
  # CONFIG_NETWORK_FILESYSTEMS is not set
-CONFIG_DEBUG_INFO=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_DETECT_HUNG_TASK=y
-CONFIG_PPC_EARLY_DEBUG=y
  CONFIG_CRYPTO_CBC=y
  CONFIG_CRYPTO_ECB=y
  CONFIG_CRYPTO_PCBC=y
  CONFIG_CRYPTO_MD5=y
  CONFIG_CRYPTO_DES=y
  # CONFIG_CRYPTO_HW is not set
+CONFIG_DEBUG_INFO=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_PPC_EARLY_DEBUG=y
diff --git a/arch/powerpc/configs/44x/warp_defconfig b/arch/powerpc/configs/44x/warp_defconfig
index 47252c2d7669..d2e4bbe1492c 100644
--- a/arch/powerpc/configs/44x/warp_defconfig
+++ b/arch/powerpc/configs/44x/warp_defconfig
@@ -1,4 +1,3 @@
-CONFIG_44x=y
  CONFIG_LOCALVERSION="-pika"
  # CONFIG_LOCALVERSION_AUTO is not set
  CONFIG_SYSVIPC=y
@@ -7,15 +6,16 @@ CONFIG_IKCONFIG_PROC=y
  CONFIG_LOG_BUF_SHIFT=14
  CONFIG_BLK_DEV_INITRD=y
  CONFIG_EXPERT=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="ip=on"
+CONFIG_44x=y
  # CONFIG_EBONY is not set
  CONFIG_WARP=y
  CONFIG_PPC4xx_GPIO=y
  CONFIG_HZ_1000=y
-CONFIG_CMDLINE="ip=on"
-# CONFIG_PCI is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
  CONFIG_NET=y
  CONFIG_PACKET=y
  CONFIG_UNIX=y
@@ -31,7 +31,6 @@ CONFIG_MTD_CMDLINE_PARTS=y
  CONFIG_MTD_BLOCK=y
  CONFIG_MTD_CFI=y
  CONFIG_MTD_CFI_AMDSTD=y
-CONFIG_MTD_PHYSMAP_OF=y
  CONFIG_MTD_RAW_NAND=y
  CONFIG_MTD_NAND_NDFC=y
  CONFIG_MTD_UBI=y
@@ -88,9 +87,9 @@ CONFIG_NLS_UTF8=y
  CONFIG_CRC_CCITT=y
  CONFIG_CRC_T10DIF=y
  CONFIG_PRINTK_TIME=y
+# CONFIG_DEBUG_BUGVERBOSE is not set
  CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_FS=y
  CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
  CONFIG_DETECT_HUNG_TASK=y
  # CONFIG_SCHED_DEBUG is not set
-# CONFIG_DEBUG_BUGVERBOSE is not set
diff --git a/arch/powerpc/configs/holly_defconfig b/arch/powerpc/configs/holly_defconfig
index 271daff47d1d..98c0644e80b4 100644
--- a/arch/powerpc/configs/holly_defconfig
+++ b/arch/powerpc/configs/holly_defconfig
@@ -4,17 +4,18 @@ CONFIG_HIGH_RES_TIMERS=y
  CONFIG_LOG_BUF_SHIFT=14
  CONFIG_BLK_DEV_INITRD=y
  CONFIG_EXPERT=y
-CONFIG_MODULES=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_PARTITION_ADVANCED=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="console=ttyS0,115200"
  # CONFIG_PPC_CHRP is not set
  # CONFIG_PPC_PMAC is not set
  CONFIG_EMBEDDED6xx=y
  CONFIG_PPC_HOLLY=y
  CONFIG_GEN_RTC=y
-CONFIG_BINFMT_MISC=y
-CONFIG_CMDLINE="console=ttyS0,115200"
  # CONFIG_SECCOMP is not set
+CONFIG_MODULES=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_BINFMT_MISC=y
  CONFIG_NET=y
  CONFIG_PACKET=y
  CONFIG_UNIX=y
@@ -53,8 +54,8 @@ CONFIG_PROC_KCORE=y
  CONFIG_TMPFS=y
  CONFIG_NFS_FS=y
  CONFIG_ROOT_NFS=y
+# CONFIG_DEBUG_BUGVERBOSE is not set
  CONFIG_MAGIC_SYSRQ=y
  # CONFIG_SCHED_DEBUG is not set
-# CONFIG_DEBUG_BUGVERBOSE is not set
  CONFIG_XMON=y
  CONFIG_XMON_DEFAULT=y
diff --git a/arch/powerpc/configs/mvme5100_defconfig b/arch/powerpc/configs/mvme5100_defconfig
index 1fed6be95d53..884a3e0defde 100644
--- a/arch/powerpc/configs/mvme5100_defconfig
+++ b/arch/powerpc/configs/mvme5100_defconfig
@@ -11,16 +11,17 @@ CONFIG_LOG_BUF_SHIFT=14
  # CONFIG_NET_NS is not set
  CONFIG_CC_OPTIMIZE_FOR_SIZE=y
  # CONFIG_COMPAT_BRK is not set
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="console=ttyS0,9600 ip=dhcp root=/dev/nfs"
  # CONFIG_PPC_CHRP is not set
  # CONFIG_PPC_PMAC is not set
  CONFIG_EMBEDDED6xx=y
  CONFIG_MVME5100=y
  CONFIG_KVM_GUEST=y
  CONFIG_HZ_100=y
-CONFIG_CMDLINE="console=ttyS0,9600 ip=dhcp root=/dev/nfs"
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
  # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
  # CONFIG_COMPACTION is not set
  CONFIG_NET=y
@@ -108,13 +109,6 @@ CONFIG_NLS_CODEPAGE_437=m
  CONFIG_NLS_CODEPAGE_932=m
  CONFIG_NLS_ISO8859_1=m
  CONFIG_NLS_UTF8=m
-CONFIG_CRC_CCITT=m
-CONFIG_CRC_T10DIF=y
-CONFIG_XZ_DEC=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
-CONFIG_DETECT_HUNG_TASK=y
-CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=20
  CONFIG_CRYPTO_CBC=y
  CONFIG_CRYPTO_PCBC=m
  CONFIG_CRYPTO_MD5=y
@@ -125,3 +119,10 @@ CONFIG_CRYPTO_DES=y
  CONFIG_CRYPTO_SERPENT=m
  CONFIG_CRYPTO_TWOFISH=m
  CONFIG_CRYPTO_DEFLATE=m
+CONFIG_CRC_CCITT=m
+CONFIG_CRC_T10DIF=y
+CONFIG_XZ_DEC=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DETECT_HUNG_TASK=y
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=20
diff --git a/arch/powerpc/configs/skiroot_defconfig b/arch/powerpc/configs/skiroot_defconfig
index b806a5d3a695..5e11995508d7 100644
--- a/arch/powerpc/configs/skiroot_defconfig
+++ b/arch/powerpc/configs/skiroot_defconfig
@@ -26,6 +26,8 @@ CONFIG_PERF_EVENTS=y
  # CONFIG_SLAB_MERGE_DEFAULT is not set
  CONFIG_SLAB_FREELIST_RANDOM=y
  CONFIG_SLAB_FREELIST_HARDENED=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="console=tty0 console=hvc0 ipr.fast_reboot=1 quiet"
  CONFIG_PPC64=y
  CONFIG_ALTIVEC=y
  CONFIG_VSX=y
@@ -42,14 +44,11 @@ CONFIG_KEXEC=y
  CONFIG_KEXEC_FILE=y
  CONFIG_PRESERVE_FA_DUMP=y
  CONFIG_IRQ_ALL_CPUS=y
-CONFIG_NUMA=y
  CONFIG_PPC_64K_PAGES=y
  CONFIG_SCHED_SMT=y
-CONFIG_CMDLINE="console=tty0 console=hvc0 ipr.fast_reboot=1 quiet"
-# CONFIG_SECCOMP is not set
  # CONFIG_PPC_MEM_KEYS is not set
  CONFIG_JUMP_LABEL=y
-CONFIG_STRICT_KERNEL_RWX=y
+# CONFIG_SECCOMP is not set
  CONFIG_MODULES=y
  CONFIG_MODULE_UNLOAD=y
  CONFIG_MODULE_SIG_FORCE=y
@@ -80,7 +79,6 @@ CONFIG_BLK_DEV_NVME=m
  CONFIG_NVME_MULTIPATH=y
  CONFIG_EEPROM_AT24=m
  # CONFIG_CXL is not set
-# CONFIG_OCXL is not set
  CONFIG_BLK_DEV_SD=m
  CONFIG_BLK_DEV_SR=m
  CONFIG_CHR_DEV_SG=m
@@ -199,7 +197,6 @@ CONFIG_PHYLIB=y
  CONFIG_INPUT_EVDEV=y
  CONFIG_INPUT_MISC=y
  # CONFIG_SERIO_SERPORT is not set
-# CONFIG_DEVMEM is not set
  CONFIG_SERIAL_8250=y
  CONFIG_SERIAL_8250_CONSOLE=y
  CONFIG_IPMI_HANDLER=y
@@ -207,9 +204,10 @@ CONFIG_IPMI_DEVICE_INTERFACE=y
  CONFIG_IPMI_POWERNV=y
  CONFIG_IPMI_WATCHDOG=y
  CONFIG_HW_RANDOM=y
+# CONFIG_DEVMEM is not set
+# CONFIG_DEVPORT is not set
  CONFIG_TCG_TPM=y
  CONFIG_TCG_TIS_I2C_NUVOTON=y
-# CONFIG_DEVPORT is not set
  CONFIG_I2C=y
  # CONFIG_I2C_COMPAT is not set
  CONFIG_I2C_CHARDEV=y
diff --git a/arch/powerpc/configs/storcenter_defconfig b/arch/powerpc/configs/storcenter_defconfig
index 47dcfaddc1ac..17a17b8ae160 100644
--- a/arch/powerpc/configs/storcenter_defconfig
+++ b/arch/powerpc/configs/storcenter_defconfig
@@ -2,18 +2,19 @@ CONFIG_SYSVIPC=y
  CONFIG_LOG_BUF_SHIFT=14
  CONFIG_EXPERT=y
  # CONFIG_KALLSYMS is not set
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_PARTITION_ADVANCED=y
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE_PREPEND="console=ttyS0,115200"
  # CONFIG_PPC_CHRP is not set
  # CONFIG_PPC_PMAC is not set
  CONFIG_EMBEDDED6xx=y
  CONFIG_STORCENTER=y
  CONFIG_HZ_100=y
-CONFIG_BINFMT_MISC=y
-CONFIG_CMDLINE="console=ttyS0,115200"
  # CONFIG_SECCOMP is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_BLK_DEV_BSG is not set
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_BINFMT_MISC=y
  CONFIG_NET=y
  CONFIG_PACKET=m
  CONFIG_UNIX=y
@@ -35,7 +36,6 @@ CONFIG_BLK_DEV_SD=y
  CONFIG_BLK_DEV_SR=y
  CONFIG_SCSI_SPI_ATTRS=y
  CONFIG_ATA=y
-CONFIG_PATA_VIA=y
  CONFIG_MD=y
  CONFIG_BLK_DEV_MD=y
  CONFIG_MD_LINEAR=y
@@ -44,16 +44,13 @@ CONFIG_MD_RAID1=y
  CONFIG_MD_RAID456=y
  CONFIG_NETDEVICES=y
  CONFIG_DUMMY=m
-CONFIG_R8169=y
  # CONFIG_INPUT is not set
  # CONFIG_SERIO is not set
  # CONFIG_VT is not set
  CONFIG_SERIAL_8250=y
  CONFIG_SERIAL_8250_CONSOLE=y
-# CONFIG_SERIAL_8250_PCI is not set
  CONFIG_SERIAL_8250_NR_UARTS=2
  CONFIG_SERIAL_8250_RUNTIME_UARTS=2
-CONFIG_NVRAM=y
  CONFIG_I2C=y
  CONFIG_I2C_CHARDEV=y
  CONFIG_I2C_MPC=y
@@ -76,4 +73,3 @@ CONFIG_NLS_CODEPAGE_437=y
  CONFIG_NLS_ISO8859_1=y
  CONFIG_NLS_UTF8=y
  CONFIG_CRC_T10DIF=y
-# CONFIG_ENABLE_MUST_CHECK is not set
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 2c2f33155317..27fece82ff93 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -27,6 +27,7 @@
  #include <linux/initrd.h>
  #include <linux/bitops.h>
  #include <linux/pgtable.h>
+#include <linux/cmdline.h>
  #include <asm/prom.h>
  #include <asm/rtas.h>
  #include <asm/page.h>
@@ -309,6 +310,7 @@ static char __init *prom_strstr(const char *s1, const char *s2)
  	return NULL;
  }
+#ifdef GENERIC_CMDLINE_NEED_STRLCAT 
  static size_t __init prom_strlcat(char *dest, const char *src, size_t count)
  {
  	size_t dsize = prom_strlen(dest);
@@ -328,6 +330,7 @@ static size_t __init prom_strlcat(char *dest, const char *src, size_t count)
  	return res;
} 
+#endif
#ifdef CONFIG_PPC_PSERIES 
  static int __init prom_strtobool(const char *s, bool *res)
@@ -780,12 +783,11 @@ static void __init early_cmdline_parse(void)
  	prom_cmd_line[0] = 0;
  	p = prom_cmd_line;
- if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && (long)prom.chosen > 0) 
+	if ((long)prom.chosen > 0)
  		l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
- if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || l <= 0 || p[0] == '\0') 
-		prom_strlcat(prom_cmd_line, " " CONFIG_CMDLINE,
-			     sizeof(prom_cmd_line));
+	cmdline_add_builtin_custom(prom_cmd_line, (l > 0 ? p : NULL), sizeof(prom_cmd_line),
+					__prombss, prom_strlcpy, prom_strlcat);
prom_printf("command line: %s\n", prom_cmd_line);
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