From 6a108a14fa356ef607be308b68337939e56ea94e Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Thu, 20 Jan 2011 14:44:16 -0800 Subject: kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: Ingo Molnar Acked-by: David Woodhouse Signed-off-by: David Rientjes Cc: Greg KH Cc: "David S. Miller" Cc: Jens Axboe Cc: Arnd Bergmann Cc: Robin Holt Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/microblaze/configs/mmu_defconfig | 2 +- arch/microblaze/configs/nommu_defconfig | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/microblaze') diff --git a/arch/microblaze/configs/mmu_defconfig b/arch/microblaze/configs/mmu_defconfig index ab8fbe7ad90..b3f5eecff2a 100644 --- a/arch/microblaze/configs/mmu_defconfig +++ b/arch/microblaze/configs/mmu_defconfig @@ -7,7 +7,7 @@ CONFIG_BLK_DEV_INITRD=y CONFIG_INITRAMFS_SOURCE="rootfs.cpio" CONFIG_INITRAMFS_COMPRESSION_GZIP=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -CONFIG_EMBEDDED=y +CONFIG_EXPERT=y CONFIG_KALLSYMS_ALL=y CONFIG_KALLSYMS_EXTRA_PASS=y # CONFIG_HOTPLUG is not set diff --git a/arch/microblaze/configs/nommu_defconfig b/arch/microblaze/configs/nommu_defconfig index ebc143c5368..0249e4b7e1d 100644 --- a/arch/microblaze/configs/nommu_defconfig +++ b/arch/microblaze/configs/nommu_defconfig @@ -6,7 +6,7 @@ CONFIG_BSD_PROCESS_ACCT_V3=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_SYSFS_DEPRECATED_V2=y -CONFIG_EMBEDDED=y +CONFIG_EXPERT=y CONFIG_KALLSYMS_ALL=y CONFIG_KALLSYMS_EXTRA_PASS=y # CONFIG_HOTPLUG is not set -- cgit v1.2.2 From 1c77ff22f539ceaa64ea43d6a26d867e84602cb7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 19 Jan 2011 19:41:35 +0100 Subject: genirq: Remove __do_IRQ All architectures are finally converted. Remove the cruft. Signed-off-by: Thomas Gleixner Cc: Richard Henderson Cc: Mike Frysinger Cc: David Howells Cc: Tony Luck Cc: Greg Ungerer Cc: Michal Simek Acked-by: David Howells Cc: Kyle McMartin Acked-by: Benjamin Herrenschmidt Cc: Chen Liqin Cc: "David S. Miller" Cc: Chris Metcalf Cc: Jeff Dike --- arch/microblaze/Kconfig | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/microblaze') diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 5f5018a71a3..5a637849379 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -52,9 +52,6 @@ config GENERIC_TIME_VSYSCALL config GENERIC_CLOCKEVENTS def_bool y -config GENERIC_HARDIRQS_NO__DO_IRQ - def_bool y - config GENERIC_GPIO def_bool y -- cgit v1.2.2 From b6e31629e335e8664a11be05992d39b2ee030960 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 19 Jan 2011 20:35:05 +0100 Subject: microblaze: Use generic irq Kconfig No functional change. Signed-off-by: Thomas Gleixner Acked-by: Michal Simek --- arch/microblaze/Kconfig | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'arch/microblaze') diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 5a637849379..31680032053 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -15,6 +15,8 @@ config MICROBLAZE select TRACING_SUPPORT select OF select OF_EARLY_FLATTREE + select HAVE_GENERIC_HARDIRQS + select GENERIC_IRQ_PROBE config SWAP def_bool n @@ -37,12 +39,6 @@ config GENERIC_FIND_NEXT_BIT config GENERIC_HWEIGHT def_bool y -config GENERIC_HARDIRQS - def_bool y - -config GENERIC_IRQ_PROBE - def_bool y - config GENERIC_CALIBRATE_DELAY def_bool y -- cgit v1.2.2 From 026a2078791b64aede220b1b1a3e4dfe4ab175e7 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 26 Jan 2011 13:41:05 +0100 Subject: microblaze: Fix DTB passing from bootloader Little endian system needs to check OF_DT_HEADER but it is swapped because it is in big-endian. Microblaze LE provides lwr instruction which loads magic number in BIG endian format which can be compared. There is used the fact that if you write 0x1 as word and load it as byte then you get for big-endian zero and 1 for little-endian. Signed-off-by: Michal Simek --- arch/microblaze/kernel/head.S | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'arch/microblaze') diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S index 42434008209..0db20b5abb5 100644 --- a/arch/microblaze/kernel/head.S +++ b/arch/microblaze/kernel/head.S @@ -77,8 +77,18 @@ real_start: We ensure r7 points to a valid FDT, just in case the bootloader is broken or non-existent */ beqi r7, no_fdt_arg /* NULL pointer? don't copy */ - lw r11, r0, r7 /* Does r7 point to a */ - rsubi r11, r11, OF_DT_HEADER /* valid FDT? */ +/* Does r7 point to a valid FDT? Load HEADER magic number */ + /* Run time Big/Little endian platform */ + /* Save 1 as word and load byte - 0 - BIG, 1 - LITTLE */ + addik r11, r0, 0x1 /* BIG/LITTLE checking value */ + /* __bss_start will be zeroed later - it is just temp location */ + swi r11, r0, TOPHYS(__bss_start) + lbui r11, r0, TOPHYS(__bss_start) + beqid r11, big_endian /* DO NOT break delay stop dependency */ + lw r11, r0, r7 /* Big endian load in delay slot */ + lwr r11, r0, r7 /* Little endian load */ +big_endian: + rsubi r11, r11, OF_DT_HEADER /* Check FDT header */ beqi r11, _prepare_copy_fdt or r7, r0, r0 /* clear R7 when not valid DTB */ bnei r11, no_fdt_arg /* No - get out of here */ -- cgit v1.2.2 From 9c749e177ccc0b3ee9589425c7255079e7a726fc Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 28 Jan 2011 13:14:58 +0100 Subject: microblaze: Fix unaligned issue on MMU system with BS=0 DIV=1 Unaligned code use shift for finding register operand. There is used BSRLI(r8,r8,2) macro which is expand for BS=0, DIV=1 by ori rD, r0, (1 << imm); \ idivu rD, rD, rA but if rD is equal rA then ori instruction rewrite value which should be devide. The patch remove this macro which use idivu instruction because idivu takes 32/34 cycles. The highest shifting is 20 which takes 20 cycles. Signed-off-by: Michal Simek --- arch/microblaze/kernel/hw_exception_handler.S | 4 ---- 1 file changed, 4 deletions(-) (limited to 'arch/microblaze') diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S index 25f6e07d8de..782680de312 100644 --- a/arch/microblaze/kernel/hw_exception_handler.S +++ b/arch/microblaze/kernel/hw_exception_handler.S @@ -147,10 +147,6 @@ #if CONFIG_XILINX_MICROBLAZE0_USE_BARREL > 0 #define BSRLI(rD, rA, imm) \ bsrli rD, rA, imm - #elif CONFIG_XILINX_MICROBLAZE0_USE_DIV > 0 - #define BSRLI(rD, rA, imm) \ - ori rD, r0, (1 << imm); \ - idivu rD, rD, rA #else #define BSRLI(rD, rA, imm) BSRLI ## imm (rD, rA) /* Only the used shift constants defined here - add more if needed */ -- cgit v1.2.2 From de93c3c119382cb888ca8a94b642dbcf8035525e Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 28 Jan 2011 13:26:54 +0100 Subject: microblaze: Fix ASM optimized code for LE Microblaze little-endian doesn't support ASM optimized library functions(memcpy/memmove). Kconfig doens't contain any information about endian that's why it is necessary to check it in the source code. The code is used with barrel shifter is used. Signed-off-by: Michal Simek --- arch/microblaze/lib/fastcopy.S | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/microblaze') diff --git a/arch/microblaze/lib/fastcopy.S b/arch/microblaze/lib/fastcopy.S index fdc48bb065d..62021d7e249 100644 --- a/arch/microblaze/lib/fastcopy.S +++ b/arch/microblaze/lib/fastcopy.S @@ -29,6 +29,10 @@ * between mem locations with size of xfer spec'd in bytes */ +#ifdef __MICROBLAZEEL__ +#error Microblaze LE not support ASM optimized lib func. Disable OPT_LIB_ASM. +#endif + #include .text .globl memcpy -- cgit v1.2.2