Commit bce86083 authored by Steven J. Hill's avatar Steven J. Hill Committed by Ralf Baechle

MIPS: microMIPS: Add configuration option for microMIPS kernel.

This adds the option to build the Linux kernel using only the
microMIPS ISA. The resulting kernel binary is, at a minimum,
20% smaller than using the MIPS32R2 ISA.
Signed-off-by: default avatarSteven J. Hill <Steven.Hill@imgtec.com>
parent 1658f914
......@@ -2041,6 +2041,13 @@ config CPU_HAS_SMARTMIPS
you don't know you probably don't have SmartMIPS and should say N
here.
config CPU_MICROMIPS
depends on SYS_SUPPORTS_MICROMIPS
bool "Build kernel using microMIPS ISA"
help
When this option is enabled the kernel will be built using the
microMIPS ISA
config CPU_HAS_WB
bool
......
......@@ -114,6 +114,7 @@ cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*e
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips)
cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips -mno-jals)
cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer
......
......@@ -2,7 +2,6 @@ CONFIG_MIPS_SEAD3=y
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_MIPS32_R2=y
CONFIG_HZ_100=y
CONFIG_EXPERIMENTAL=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_NO_HZ=y
......@@ -115,10 +114,8 @@ CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_UTF8=y
# CONFIG_FTRACE is not set
CONFIG_CRYPTO=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_AES=y
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
CONFIG_MIPS_SEAD3=y
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_MIPS32_R2=y
CONFIG_CPU_MICROMIPS=y
CONFIG_HZ_100=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=15
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_MTD=y
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_GLUEBI=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_SG=y
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_NETDEVICES=y
CONFIG_SMSC911X=y
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_MARVELL_PHY=y
CONFIG_DAVICOM_PHY=y
CONFIG_QSEMI_PHY=y
CONFIG_LXT_PHY=y
CONFIG_CICADA_PHY=y
CONFIG_VITESSE_PHY=y
CONFIG_SMSC_PHY=y
CONFIG_BROADCOM_PHY=y
CONFIG_ICPLUS_PHY=y
# CONFIG_WLAN is not set
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_LEGACY_PTY_COUNT=32
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=2
CONFIG_SERIAL_8250_RUNTIME_UARTS=2
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_SPI=y
CONFIG_SENSORS_ADT7475=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_VGA_CONSOLE is not set
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_STORAGE=y
CONFIG_MMC=y
CONFIG_MMC_DEBUG=y
CONFIG_MMC_SPI=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_M41T80=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_QUOTA=y
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_UTF8=y
# CONFIG_FTRACE is not set
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
......@@ -99,6 +99,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
if (cpu_has_vz) seq_printf(m, "%s", " vz");
seq_printf(m, "\n");
if (cpu_has_mmips) {
seq_printf(m, "micromips kernel\t: %s\n",
(read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no");
}
seq_printf(m, "shadow register sets\t: %d\n",
cpu_data[n].srsets);
seq_printf(m, "kscratch registers\t: %d\n",
......
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