From 16444a8a40d4c7b4f6de34af0cae1f76a4f6c901 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 12 May 2008 21:20:42 +0200 Subject: ftrace: add basic support for gcc profiler instrumentation If CONFIG_FTRACE is selected and /proc/sys/kernel/ftrace_enabled is set to a non-zero value the ftrace routine will be called everytime we enter a kernel function that is not marked with the "notrace" attribute. The ftrace routine will then call a registered function if a function happens to be registered. [ This code has been highly hacked by Steven Rostedt and Ingo Molnar, so don't blame Arnaldo for all of this ;-) ] Update: It is now possible to register more than one ftrace function. If only one ftrace function is registered, that will be the function that ftrace calls directly. If more than one function is registered, then ftrace will call a function that will loop through the functions to call. Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- Makefile | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 20b32351906b..b4a273f19b52 100644 --- a/Makefile +++ b/Makefile @@ -528,6 +528,10 @@ KBUILD_CFLAGS += -g KBUILD_AFLAGS += -gdwarf-2 endif +ifdef CONFIG_FTRACE +KBUILD_CFLAGS += -pg +endif + # We trigger additional mismatches with less inlining ifdef CONFIG_DEBUG_SECTION_MISMATCH KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) -- cgit v1.3-8-gc7d7 From 4d2acfbfdf68257e846aaa355edd10fc35ba0feb Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 23 May 2008 13:58:12 +0100 Subject: firmware: Add CONFIG_EXTRA_FIRMWARE option This allows arbitrary firmware files to be included in the static kernel where the firmware loader can find them without requiring userspace to be alive. (Updated and CONFIG_EXTRA_FIRMWARE_DIR added with lots of help from Johannes Berg). Signed-off-by: David Woodhouse Signed-off-by: Johannes Berg --- Makefile | 2 +- drivers/base/Kconfig | 39 +++++++++++++++++++++++ firmware/Makefile | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 128 insertions(+), 1 deletion(-) create mode 100644 firmware/Makefile (limited to 'Makefile') diff --git a/Makefile b/Makefile index 6315424a00b9..f398cffa6c07 100644 --- a/Makefile +++ b/Makefile @@ -450,7 +450,7 @@ scripts: scripts_basic include/config/auto.conf # Objects we will link into vmlinux / subdirs we need to visit init-y := init/ -drivers-y := drivers/ sound/ +drivers-y := drivers/ sound/ firmware/ net-y := net/ libs-y := lib/ core-y := usr/ diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index d7da109c24fd..13cfcb435f7d 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -34,6 +34,45 @@ config FW_LOADER require userspace firmware loading support, but a module built outside the kernel tree does. +config EXTRA_FIRMWARE + string "External firmware blobs to build into the kernel binary" + depends on FW_LOADER + help + This option allows firmware to be built into the kernel, for the + cases where the user either cannot or doesn't want to provide it from + userspace at runtime (for example, when the firmware in question is + required for accessing the boot device, and the user doesn't want to + use an initrd). + + This option is a string, and takes the (space-separated) names of the + firmware files -- the same names which appear in MODULE_FIRMWARE() + and request_firmware() in the source. These files should exist under + the directory specified by the EXTRA_FIRMWARE_DIR option, which is + by default the firmware/ subdirectory of the kernel source tree. + + So, for example, you might set CONFIG_EXTRA_FIRMWARE="usb8388.bin", + copy the usb8388.bin file into the firmware/ directory, and build the + kernel. Then any request_firmware("usb8388.bin") will be + satisfied internally without needing to call out to userspace. + + WARNING: If you include additional firmware files into your binary + kernel image which are not available under the terms of the GPL, + then it may be a violation of the GPL to distribute the resulting + image -- since it combines both GPL and non-GPL work. You should + consult a lawyer of your own before distributing such an image. + +config EXTRA_FIRMWARE_DIR + string "Firmware blobs root directory" + depends on EXTRA_FIRMWARE != "" + default "firmware" + help + This option controls the directory in which the kernel build system + looks for the firmware files listed in the EXTRA_FIRMWARE option. + The default is the firmware/ directory in the kernel source tree, + but by changing this option you can point it elsewhere, such as + the /lib/firmware/ directory or another separate directory + containing firmware files. + config DEBUG_DRIVER bool "Driver Core verbose debug messages" depends on DEBUG_KERNEL diff --git a/firmware/Makefile b/firmware/Makefile new file mode 100644 index 000000000000..e69461f9362b --- /dev/null +++ b/firmware/Makefile @@ -0,0 +1,88 @@ +# +# kbuild file for firmware/ +# + +# Create $(fwabs) from $(CONFIG_EXTRA_FIRMWARE_DIR) -- if it doesn't have a +# leading /, it's relative to $(srctree). +fwdir := $(subst ",,$(CONFIG_EXTRA_FIRMWARE_DIR)) +fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) + +fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE)) + +firmware-y := $(fw-external-y) $(fw-shipped-y) +firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(firmware-y) $(fw-shipped-)))) + +quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) + cmd_mkdir = mkdir -p $@ + +quiet_cmd_ihex = IHEX $@ + cmd_ihex = $(OBJCOPY) -Iihex -Obinary $< $@ + +quiet_cmd_fwbin = MK_FW $@ + cmd_fwbin = FWNAME="$(patsubst firmware/%.gen.S,%,$@)"; \ + FWSTR="$(subst /,_,$(subst .,_,$(subst -,_,$(patsubst \ + firmware/%.gen.S,%,$@))))"; \ + ASM_WORD=$(if $(CONFIG_64BIT),.quad,.long); \ + ASM_ALIGN=$(if $(CONFIG_64BIT),3,2); \ + PROGBITS=$(if $(CONFIG_ARM),%,@)progbits; \ + echo "/* Generated by firmware/Makefile */" > $@;\ + echo " .section .rodata" >>$@;\ + echo " .p2align $${ASM_ALIGN}" >>$@;\ + echo "_fw_$${FWSTR}_bin:" >>$@;\ + echo " .incbin \"$(2)\"" >>$@;\ + echo "_fw_end:" >>$@;\ + echo " .section .rodata.str,\"aMS\",$${PROGBITS},1" >>$@;\ + echo " .p2align $${ASM_ALIGN}" >>$@;\ + echo "_fw_$${FWSTR}_name:" >>$@;\ + echo " .string \"$$FWNAME\"" >>$@;\ + echo " .section .builtin_fw,\"a\",$${PROGBITS}" >>$@;\ + echo " .p2align $${ASM_ALIGN}" >>$@;\ + echo " $${ASM_WORD} _fw_$${FWSTR}_name" >>$@;\ + echo " $${ASM_WORD} _fw_$${FWSTR}_bin" >>$@;\ + echo " $${ASM_WORD} _fw_end - _fw_$${FWSTR}_bin" >>$@; + +# One of these files will change, or come into existence, whenever +# the configuration changes between 32-bit and 64-bit. The .S files +# need to change when that happens. +wordsize_deps := $(wildcard include/config/64bit.h include/config/32bit.h \ + include/config/ppc32.h include/config/ppc64.h \ + include/config/superh32.h include/config/superh64.h \ + include/config/x86_32.h include/config/x86_64.h) + +# Workaround for make < 3.81, where .SECONDEXPANSION doesn't work. +# It'll end up depending on these targets, so make them a PHONY rule which +# depends on _all_ the directories in $(firmware-dirs), and it'll work out OK. +PHONY += $(objtree)/$$(%) $(objtree)/$(obj)/$$(%) +$(objtree)/$$(%) $(objtree)/$(obj)/$$(%): $(firmware-dirs) + @true + +# For the $$(dir %) trick, where we need % to be expanded first. +.SECONDEXPANSION: + +$(patsubst %,$(obj)/%.gen.S, $(fw-shipped-y)): %: $(wordsize_deps) \ + | $(objtree)/$$(dir %) + $(call cmd,fwbin,$(patsubst %.gen.S,%,$@)) +$(patsubst %,$(obj)/%.gen.S, $(fw-external-y)): %: $(wordsize_deps) \ + include/config/builtin/firmware/dir.h | $(objtree)/$$(dir %) + $(call cmd,fwbin,$(fwabs)/$(patsubst $(obj)/%.gen.S,%,$@)) + +# The .o files depend on the binaries directly; the .S files don't. +$(patsubst %,$(obj)/%.gen.o, $(fw-shipped-y)): %.gen.o: % +$(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/% + +$(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) + $(call cmd,ihex) + +$(firmware-dirs): + $(call cmd,mkdir) + +obj-y := $(patsubst %,%.gen.o, $(firmware-y)) + +# Remove .S files and binaries created from ihex +# (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) +targets := $(fw-shipped-) $(patsubst $(obj)/%,%, \ + $(shell find $(obj) -name \*.gen.S 2>/dev/null)) + +# Without this, built-in.o won't be created when it's empty, and the +# final vmlinux link will fail. +obj-n := dummy -- cgit v1.3-8-gc7d7 From 88ecf814c47f577248751ddbe9626d98aeef5783 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 29 May 2008 11:01:51 +0300 Subject: firmware: Add firmware installation to modules_install, add firmware_install For 'make modules_install', install any firmware required by the modules which are being installed. Also add a 'make firmware_install' target which doesn't depend on the configuration, but installs _all_ available in-kernel-tree firmware into $(INSTALL_FW_PATH), which defaults to /lib/firmware. This is intended for distributors to make arch-independent (and config-independent) packages containing firmware. Signed-off-by: David Woodhouse --- Makefile | 13 +++++++++++++ firmware/Makefile | 24 +++++++++++++++++------- scripts/Makefile.fwinst | 45 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 75 insertions(+), 7 deletions(-) create mode 100644 scripts/Makefile.fwinst (limited to 'Makefile') diff --git a/Makefile b/Makefile index f398cffa6c07..bd2aa14f1e77 100644 --- a/Makefile +++ b/Makefile @@ -994,6 +994,16 @@ PHONY += depend dep depend dep: @echo '*** Warning: make $@ is unnecessary now.' +# --------------------------------------------------------------------------- +# Firmware install +INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware +export INSTALL_FW_PATH + +PHONY += firmware_install +firmware_install: FORCE + @mkdir -p $(objtree)/firmware + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install + # --------------------------------------------------------------------------- # Kernel headers INSTALL_HDR_PATH=$(objtree)/usr @@ -1080,6 +1090,7 @@ _modinst_: # boot script depmod is the master version. PHONY += _modinst_post _modinst_post: _modinst_ + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst $(call cmd,depmod) else # CONFIG_MODULES @@ -1197,6 +1208,8 @@ help: @echo '* vmlinux - Build the bare kernel' @echo '* modules - Build all modules' @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' + @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' + @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' @echo ' dir/ - Build all files in dir and below' @echo ' dir/file.[ois] - Build specified target only' @echo ' dir/file.ko - Build module including final link' diff --git a/firmware/Makefile b/firmware/Makefile index cc25f5600d5d..3742feeb066f 100644 --- a/firmware/Makefile +++ b/firmware/Makefile @@ -9,13 +9,22 @@ fwabs := $(addprefix $(srctree)/,$(filter-out /%,$(fwdir)))$(filter /%,$(fwdir)) fw-external-y := $(subst ",,$(CONFIG_EXTRA_FIRMWARE)) -# If CONFIG_FIRMWARE_IN_KERNEL is not set, then don't include any firmware -ifneq ($(CONFIG_FIRMWARE_IN_KERNEL),y) -fw-shipped-y := -endif +# There are three cases to care about: +# 1. Building kernel with CONFIG_FIRMWARE_IN_KERNEL=y -- $(fw-shipped-y) should +# include the firmware files to include, according to .config +# 2. 'make modules_install', which will install firmware for modules, and +# _also_ for the in-kernel drivers when CONFIG_FIRMWARE_IN_KERNEL=n +# 3. 'make firmware_install', which installs all firmware, unconditionally. -firmware-y := $(fw-external-y) $(fw-shipped-y) -firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(firmware-y) $(fw-shipped-)))) +# For the former two cases we want $(fw-shipped-y) and $(fw-shipped-m) to be +# accurate. In the latter case it doesn't matter -- it'll use $(fw-shipped-all). +# But be aware that the config file might not be included at all. + + +fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-) + +# Directories which we _might_ need to create, so we have a rule for them. +firmware-dirs := $(sort $(patsubst %,$(objtree)/$(obj)/%/,$(dir $(fw-external-y) $(fw-shipped-all)))) quiet_cmd_mkdir = MKDIR $(patsubst $(objtree)/%,%,$@) cmd_mkdir = mkdir -p $@ @@ -81,7 +90,8 @@ $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %) $(firmware-dirs): $(call cmd,mkdir) -obj-y := $(patsubst %,%.gen.o, $(firmware-y)) +obj-y += $(patsubst %,%.gen.o, $(fw-external-y)) +obj-$(CONFIG_FIRMWARE_IN_KERNEL) += $(patsubst %,%.gen.o, $(fw-shipped-y)) # Remove .S files and binaries created from ihex # (during 'make clean' .config isn't included so they're all in $(fw-shipped-)) diff --git a/scripts/Makefile.fwinst b/scripts/Makefile.fwinst new file mode 100644 index 000000000000..1c030087037f --- /dev/null +++ b/scripts/Makefile.fwinst @@ -0,0 +1,45 @@ +# ========================================================================== +# Installing firmware +# +# We don't include the .config, so all firmware files are in $(fw-shipped-) +# rather than in $(fw-shipped-y) or $(fw-shipped-n). +# ========================================================================== + +INSTALL := install + +# For modules_install installing firmware, we want to see .config +# But for firmware_install, we don't care, but don't want to require it. +-include $(objtree)/.config + +include scripts/Kbuild.include +include $(srctree)/$(obj)/Makefile + +include scripts/Makefile.host + +mod-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-m)) + +# If CONFIG_FIRMWARE_IN_KERNEL isn't set, then install the +# firmware for in-kernel drivers too. +ifndef CONFIG_FIRMWARE_IN_KERNEL +mod-fw += $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-y)) +endif + +installed-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-all)) +installed-fw-dirs := $(sort $(dir $(installed-fw))) $(INSTALL_FW_PATH)/. + +quiet_cmd_install = INSTALL $(subst $(srctree)/,,$@) + cmd_install = $(INSTALL) -m0644 $< $@ + +$(installed-fw-dirs): + $(call cmd,mkdir) + +$(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/% | $(INSTALL_FW_PATH)/$$(dir %)/ + $(call cmd,install) + +.PHONY: __fw_install __fw_modinst FORCE + +__fw_install: $(installed-fw) +__fw_modinst: $(mod-fw) + + +FORCE: -- cgit v1.3-8-gc7d7 From 137e95906e294913fab02162e8a1948ade49acb5 Mon Sep 17 00:00:00 2001 From: John Rigby Date: Wed, 9 Jul 2008 14:54:02 -0600 Subject: powerpc/mpc5121: Add clock driver Plugs into the generic powerpc clock driver in arch/powerpc/kernel/clock.c The following subset of clk_interface is implemented: clk_get, clk_put: get clock via name, release clock clk_enable, clk_disable: enable or disable clock clk_get_rate: get clock rate in Hz clk_set_rate: stubbed clk_round_rate: stubbed clk_set_parent: NULL clk_get_parent: NULL Signed-off-by: John Rigby Signed-off-by: Grant Likely --- Makefile | 1 + arch/powerpc/platforms/512x/Kconfig | 1 + arch/powerpc/platforms/512x/Makefile | 1 + arch/powerpc/platforms/512x/clock.c | 729 +++++++++++++++++++++++++++++++++++ 4 files changed, 732 insertions(+) create mode 100644 arch/powerpc/platforms/512x/clock.c (limited to 'Makefile') diff --git a/Makefile b/Makefile index 6aff5f47c21d..fc3ae9fc8471 100644 --- a/Makefile +++ b/Makefile @@ -1,3 +1,4 @@ +FRED=42 VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 26 diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig index 4c0da0c079e9..162af067d128 100644 --- a/arch/powerpc/platforms/512x/Kconfig +++ b/arch/powerpc/platforms/512x/Kconfig @@ -2,6 +2,7 @@ config PPC_MPC512x bool select FSL_SOC select IPIC + select PPC_CLOCK default n config PPC_MPC5121 diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile index 232c89f2039a..90910c1f725b 100644 --- a/arch/powerpc/platforms/512x/Makefile +++ b/arch/powerpc/platforms/512x/Makefile @@ -1,4 +1,5 @@ # # Makefile for the Freescale PowerPC 512x linux kernel. # +obj-y += clock.o obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o diff --git a/arch/powerpc/platforms/512x/clock.c b/arch/powerpc/platforms/512x/clock.c new file mode 100644 index 000000000000..f416014ee727 --- /dev/null +++ b/arch/powerpc/platforms/512x/clock.c @@ -0,0 +1,729 @@ +/* + * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby + * + * Implements the clk api defined in include/linux/clk.h + * + * Original based on linux/arch/arm/mach-integrator/clock.c + * + * Copyright (C) 2004 ARM Limited. + * Written by Deep Blue Solutions Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#undef CLK_DEBUG + +static int clocks_initialized; + +#define CLK_HAS_RATE 0x1 /* has rate in MHz */ +#define CLK_HAS_CTRL 0x2 /* has control reg and bit */ + +struct clk { + struct list_head node; + char name[32]; + int flags; + struct device *dev; + unsigned long rate; + struct module *owner; + void (*calc) (struct clk *); + struct clk *parent; + int reg, bit; /* CLK_HAS_CTRL */ + int div_shift; /* only used by generic_div_clk_calc */ +}; + +static LIST_HEAD(clocks); +static DEFINE_MUTEX(clocks_mutex); + +static struct clk *mpc5121_clk_get(struct device *dev, const char *id) +{ + struct clk *p, *clk = ERR_PTR(-ENOENT); + int dev_match = 0; + int id_match = 0; + + if (dev == NULL && id == NULL) + return NULL; + + mutex_lock(&clocks_mutex); + list_for_each_entry(p, &clocks, node) { + if (dev && dev == p->dev) + dev_match++; + if (strcmp(id, p->name) == 0) + id_match++; + if ((dev_match || id_match) && try_module_get(p->owner)) { + clk = p; + break; + } + } + mutex_unlock(&clocks_mutex); + + return clk; +} + +#ifdef CLK_DEBUG +static void dump_clocks(void) +{ + struct clk *p; + + mutex_lock(&clocks_mutex); + printk(KERN_INFO "CLOCKS:\n"); + list_for_each_entry(p, &clocks, node) { + printk(KERN_INFO " %s %ld", p->name, p->rate); + if (p->parent) + printk(KERN_INFO " %s %ld", p->parent->name, + p->parent->rate); + if (p->flags & CLK_HAS_CTRL) + printk(KERN_INFO " reg/bit %d/%d", p->reg, p->bit); + printk("\n"); + } + mutex_unlock(&clocks_mutex); +} +#define DEBUG_CLK_DUMP() dump_clocks() +#else +#define DEBUG_CLK_DUMP() +#endif + + +static void mpc5121_clk_put(struct clk *clk) +{ + module_put(clk->owner); +} + +#define NRPSC 12 + +struct mpc512x_clockctl { + u32 spmr; /* System PLL Mode Reg */ + u32 sccr[2]; /* System Clk Ctrl Reg 1 & 2 */ + u32 scfr1; /* System Clk Freq Reg 1 */ + u32 scfr2; /* System Clk Freq Reg 2 */ + u32 reserved; + u32 bcr; /* Bread Crumb Reg */ + u32 pccr[NRPSC]; /* PSC Clk Ctrl Reg 0-11 */ + u32 spccr; /* SPDIF Clk Ctrl Reg */ + u32 cccr; /* CFM Clk Ctrl Reg */ + u32 dccr; /* DIU Clk Cnfg Reg */ +}; + +struct mpc512x_clockctl __iomem *clockctl; + +static int mpc5121_clk_enable(struct clk *clk) +{ + unsigned int mask; + + if (clk->flags & CLK_HAS_CTRL) { + mask = in_be32(&clockctl->sccr[clk->reg]); + mask |= 1 << clk->bit; + out_be32(&clockctl->sccr[clk->reg], mask); + } + return 0; +} + +static void mpc5121_clk_disable(struct clk *clk) +{ + unsigned int mask; + + if (clk->flags & CLK_HAS_CTRL) { + mask = in_be32(&clockctl->sccr[clk->reg]); + mask &= ~(1 << clk->bit); + out_be32(&clockctl->sccr[clk->reg], mask); + } +} + +static unsigned long mpc5121_clk_get_rate(struct clk *clk) +{ + if (clk->flags & CLK_HAS_RATE) + return clk->rate; + else + return 0; +} + +static long mpc5121_clk_round_rate(struct clk *clk, unsigned long rate) +{ + return rate; +} + +static int mpc5121_clk_set_rate(struct clk *clk, unsigned long rate) +{ + return 0; +} + +static int clk_register(struct clk *clk) +{ + mutex_lock(&clocks_mutex); + list_add(&clk->node, &clocks); + mutex_unlock(&clocks_mutex); + return 0; +} + +static unsigned long spmf_mult(void) +{ + /* + * Convert spmf to multiplier + */ + static int spmf_to_mult[] = { + 68, 1, 12, 16, + 20, 24, 28, 32, + 36, 40, 44, 48, + 52, 56, 60, 64 + }; + int spmf = (clockctl->spmr >> 24) & 0xf; + return spmf_to_mult[spmf]; +} + +static unsigned long sysdiv_div_x_2(void) +{ + /* + * Convert sysdiv to divisor x 2 + * Some divisors have fractional parts so + * multiply by 2 then divide by this value + */ + static int sysdiv_to_div_x_2[] = { + 4, 5, 6, 7, + 8, 9, 10, 14, + 12, 16, 18, 22, + 20, 24, 26, 30, + 28, 32, 34, 38, + 36, 40, 42, 46, + 44, 48, 50, 54, + 52, 56, 58, 62, + 60, 64, 66, + }; + int sysdiv = (clockctl->scfr2 >> 26) & 0x3f; + return sysdiv_to_div_x_2[sysdiv]; +} + +static unsigned long ref_to_sys(unsigned long rate) +{ + rate *= spmf_mult(); + rate *= 2; + rate /= sysdiv_div_x_2(); + + return rate; +} + +static unsigned long sys_to_ref(unsigned long rate) +{ + rate *= sysdiv_div_x_2(); + rate /= 2; + rate /= spmf_mult(); + + return rate; +} + +static long ips_to_ref(unsigned long rate) +{ + int ips_div = (clockctl->scfr1 >> 23) & 0x7; + + rate *= ips_div; /* csb_clk = ips_clk * ips_div */ + rate *= 2; /* sys_clk = csb_clk * 2 */ + return sys_to_ref(rate); +} + +static unsigned long devtree_getfreq(char *clockname) +{ + struct device_node *np; + const unsigned int *prop; + unsigned int val = 0; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-immr"); + if (np) { + prop = of_get_property(np, clockname, NULL); + if (prop) + val = *prop; + of_node_put(np); + } + return val; +} + +static void ref_clk_calc(struct clk *clk) +{ + unsigned long rate; + + rate = devtree_getfreq("bus-frequency"); + if (rate == 0) { + printk(KERN_ERR "No bus-frequency in dev tree\n"); + clk->rate = 0; + return; + } + clk->rate = ips_to_ref(rate); +} + +static struct clk ref_clk = { + .name = "ref_clk", + .calc = ref_clk_calc, +}; + + +static void sys_clk_calc(struct clk *clk) +{ + clk->rate = ref_to_sys(ref_clk.rate); +} + +static struct clk sys_clk = { + .name = "sys_clk", + .calc = sys_clk_calc, +}; + +static void diu_clk_calc(struct clk *clk) +{ + int diudiv_x_2 = clockctl->scfr1 & 0xff; + unsigned long rate; + + rate = sys_clk.rate; + + rate *= 2; + rate /= diudiv_x_2; + + clk->rate = rate; +} + +static void half_clk_calc(struct clk *clk) +{ + clk->rate = clk->parent->rate / 2; +} + +static void generic_div_clk_calc(struct clk *clk) +{ + int div = (clockctl->scfr1 >> clk->div_shift) & 0x7; + + clk->rate = clk->parent->rate / div; +} + +static void unity_clk_calc(struct clk *clk) +{ + clk->rate = clk->parent->rate; +} + +static struct clk csb_clk = { + .name = "csb_clk", + .calc = half_clk_calc, + .parent = &sys_clk, +}; + +static void e300_clk_calc(struct clk *clk) +{ + int spmf = (clockctl->spmr >> 16) & 0xf; + int ratex2 = clk->parent->rate * spmf; + + clk->rate = ratex2 / 2; +} + +static struct clk e300_clk = { + .name = "e300_clk", + .calc = e300_clk_calc, + .parent = &csb_clk, +}; + +static struct clk ips_clk = { + .name = "ips_clk", + .calc = generic_div_clk_calc, + .parent = &csb_clk, + .div_shift = 23, +}; + +/* + * Clocks controlled by SCCR1 (.reg = 0) + */ +static struct clk lpc_clk = { + .name = "lpc_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 30, + .calc = generic_div_clk_calc, + .parent = &ips_clk, + .div_shift = 11, +}; + +static struct clk nfc_clk = { + .name = "nfc_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 29, + .calc = generic_div_clk_calc, + .parent = &ips_clk, + .div_shift = 8, +}; + +static struct clk pata_clk = { + .name = "pata_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 28, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +/* + * PSC clocks (bits 27 - 16) + * are setup elsewhere + */ + +static struct clk sata_clk = { + .name = "sata_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 14, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk fec_clk = { + .name = "fec_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 13, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk pci_clk = { + .name = "pci_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 11, + .calc = generic_div_clk_calc, + .parent = &csb_clk, + .div_shift = 20, +}; + +/* + * Clocks controlled by SCCR2 (.reg = 1) + */ +static struct clk diu_clk = { + .name = "diu_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 31, + .calc = diu_clk_calc, +}; + +static struct clk axe_clk = { + .name = "axe_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 30, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk usb1_clk = { + .name = "usb1_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 28, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk usb2_clk = { + .name = "usb2_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 27, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk i2c_clk = { + .name = "i2c_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 26, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk mscan_clk = { + .name = "mscan_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 25, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk sdhc_clk = { + .name = "sdhc_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 24, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk mbx_bus_clk = { + .name = "mbx_bus_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 22, + .calc = half_clk_calc, + .parent = &csb_clk, +}; + +static struct clk mbx_clk = { + .name = "mbx_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 21, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk mbx_3d_clk = { + .name = "mbx_3d_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 20, + .calc = generic_div_clk_calc, + .parent = &mbx_bus_clk, + .div_shift = 14, +}; + +static void psc_mclk_in_calc(struct clk *clk) +{ + clk->rate = devtree_getfreq("psc_mclk_in"); + if (!clk->rate) + clk->rate = 25000000; +} + +static struct clk psc_mclk_in = { + .name = "psc_mclk_in", + .calc = psc_mclk_in_calc, +}; + +static struct clk spdif_txclk = { + .name = "spdif_txclk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 23, +}; + +static struct clk spdif_rxclk = { + .name = "spdif_rxclk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 23, +}; + +static void ac97_clk_calc(struct clk *clk) +{ + /* ac97 bit clock is always 24.567 MHz */ + clk->rate = 24567000; +} + +static struct clk ac97_clk = { + .name = "ac97_clk_in", + .calc = ac97_clk_calc, +}; + +struct clk *rate_clks[] = { + &ref_clk, + &sys_clk, + &diu_clk, + &csb_clk, + &e300_clk, + &ips_clk, + &fec_clk, + &sata_clk, + &pata_clk, + &nfc_clk, + &lpc_clk, + &mbx_bus_clk, + &mbx_clk, + &mbx_3d_clk, + &axe_clk, + &usb1_clk, + &usb2_clk, + &i2c_clk, + &mscan_clk, + &sdhc_clk, + &pci_clk, + &psc_mclk_in, + &spdif_txclk, + &spdif_rxclk, + &ac97_clk, + NULL +}; + +static void rate_clk_init(struct clk *clk) +{ + if (clk->calc) { + clk->calc(clk); + clk->flags |= CLK_HAS_RATE; + clk_register(clk); + } else { + printk(KERN_WARNING + "Could not initialize clk %s without a calc routine\n", + clk->name); + } +} + +static void rate_clks_init(void) +{ + struct clk **cpp, *clk; + + cpp = rate_clks; + while ((clk = *cpp++)) + rate_clk_init(clk); +} + +/* + * There are two clk enable registers with 32 enable bits each + * psc clocks and device clocks are all stored in dev_clks + */ +struct clk dev_clks[2][32]; + +/* + * Given a psc number return the dev_clk + * associated with it + */ +static struct clk *psc_dev_clk(int pscnum) +{ + int reg, bit; + struct clk *clk; + + reg = 0; + bit = 27 - pscnum; + + clk = &dev_clks[reg][bit]; + clk->reg = 0; + clk->bit = bit; + return clk; +} + +/* + * PSC clock rate calculation + */ +static void psc_calc_rate(struct clk *clk, int pscnum, struct device_node *np) +{ + unsigned long mclk_src = sys_clk.rate; + unsigned long mclk_div; + + /* + * Can only change value of mclk divider + * when the divider is disabled. + * + * Zero is not a valid divider so minimum + * divider is 1 + * + * disable/set divider/enable + */ + out_be32(&clockctl->pccr[pscnum], 0); + out_be32(&clockctl->pccr[pscnum], 0x00020000); + out_be32(&clockctl->pccr[pscnum], 0x00030000); + + if (clockctl->pccr[pscnum] & 0x80) { + clk->rate = spdif_rxclk.rate; + return; + } + + switch ((clockctl->pccr[pscnum] >> 14) & 0x3) { + case 0: + mclk_src = sys_clk.rate; + break; + case 1: + mclk_src = ref_clk.rate; + break; + case 2: + mclk_src = psc_mclk_in.rate; + break; + case 3: + mclk_src = spdif_txclk.rate; + break; + } + + mclk_div = ((clockctl->pccr[pscnum] >> 17) & 0x7fff) + 1; + clk->rate = mclk_src / mclk_div; +} + +/* + * Find all psc nodes in device tree and assign a clock + * with name "psc%d_mclk" and dev pointing at the device + * returned from of_find_device_by_node + */ +static void psc_clks_init(void) +{ + struct device_node *np; + const u32 *cell_index; + struct of_device *ofdev; + + for_each_compatible_node(np, NULL, "fsl,mpc5121-psc") { + cell_index = of_get_property(np, "cell-index", NULL); + if (cell_index) { + int pscnum = *cell_index; + struct clk *clk = psc_dev_clk(pscnum); + + clk->flags = CLK_HAS_RATE | CLK_HAS_CTRL; + ofdev = of_find_device_by_node(np); + clk->dev = &ofdev->dev; + /* + * AC97 is special rate clock does + * not go through normal path + */ + if (strcmp("ac97", np->name) == 0) + clk->rate = ac97_clk.rate; + else + psc_calc_rate(clk, pscnum, np); + sprintf(clk->name, "psc%d_mclk", pscnum); + clk_register(clk); + clk_enable(clk); + } + } +} + +static struct clk_interface mpc5121_clk_functions = { + .clk_get = mpc5121_clk_get, + .clk_enable = mpc5121_clk_enable, + .clk_disable = mpc5121_clk_disable, + .clk_get_rate = mpc5121_clk_get_rate, + .clk_put = mpc5121_clk_put, + .clk_round_rate = mpc5121_clk_round_rate, + .clk_set_rate = mpc5121_clk_set_rate, + .clk_set_parent = NULL, + .clk_get_parent = NULL, +}; + +static int +mpc5121_clk_init(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-clock"); + if (np) { + clockctl = of_iomap(np, 0); + of_node_put(np); + } + + if (!clockctl) { + printk(KERN_ERR "Could not map clock control registers\n"); + return 0; + } + + rate_clks_init(); + psc_clks_init(); + + /* leave clockctl mapped forever */ + /*iounmap(clockctl); */ + DEBUG_CLK_DUMP(); + clocks_initialized++; + clk_functions = mpc5121_clk_functions; + return 0; +} + + +arch_initcall(mpc5121_clk_init); -- cgit v1.3-8-gc7d7 From bce7f793daec3e65ec5c5705d2457b81fe7b5725 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 13 Jul 2008 14:51:29 -0700 Subject: Linux 2.6.26 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 6315424a00b9..e3c5eb66ec52 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 26 -EXTRAVERSION = -rc9 +EXTRAVERSION = NAME = Rotary Wombat # *DOCUMENTATION* -- cgit v1.3-8-gc7d7 From bef5b54bd7bf8117c75cb943d64549134c6d9a1f Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 16 Jul 2008 13:02:24 +0100 Subject: Fix MIPS cross-compile problem Crosscompiling on a Fedora 9 machine running gcc 4.3.0 as its host compiler and gcc 3.4.6 for the mips-linux target results in the following build error: $ make malta_defconfig $ make cc1: error: unrecognized command line option "-fno-stack-protector" scripts/kconfig/conf -s arch/mips/Kconfig cc1: error: unrecognized command line option "-fno-stack-protector" The arch Makefile is included too late so the host compiler is feature tested, not the crosscompiler as intended and thus the Makefile applies adds -fno-stack-protector to crosscompiler's flags which fails for gcc 3.4.6. The bug was introduced by e06b8b98da071f7dd78fb7822991694288047df0 in 2.6.25; 35bb5b1e0e84cfa1a8906f7e6a77f391ff315791 did add more flags testing before the arch Makefile inclusion. Signed-off-by: Ralf Baechle Signed-off-by: Linus Torvalds --- Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 8a2a275be304..1564577bdc53 100644 --- a/Makefile +++ b/Makefile @@ -508,6 +508,8 @@ else KBUILD_CFLAGS += -O2 endif +include $(srctree)/arch/$(SRCARCH)/Makefile + ifneq (CONFIG_FRAME_WARN,0) KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) endif @@ -516,8 +518,6 @@ endif # Arch Makefiles may override this setting KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) -include $(srctree)/arch/$(SRCARCH)/Makefile - ifdef CONFIG_FRAME_POINTER KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls else -- cgit v1.3-8-gc7d7 From 7023cc61292f9cd61d99521206480f6e387132ff Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 17 Jul 2008 01:06:55 -0600 Subject: Fix collateral damage to top level Makefile The patch named "powerpc/mpc5121: Add clock driver", also contained an unrelated and bogus change to the top-level makefile. This patch backs out the bad bit. SHA1 of offending patch: 137e95906e294913fab02162e8a1948ade49acb5) Signed-off-by: Grant Likely Acked-by: Benjamin Herrenschmidt Repented-by: John Rigby [ Heh. Normally I pick these out from the diffstats, but I guess I've grown to trust the ppc tree too much ;) - Linus ] Signed-off-by: Linus Torvalds --- Makefile | 1 - 1 file changed, 1 deletion(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 1564577bdc53..6192922de9c0 100644 --- a/Makefile +++ b/Makefile @@ -1,4 +1,3 @@ -FRED=42 VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 26 -- cgit v1.3-8-gc7d7 From d35cb360c29956510b2fe1a953bd4968536f7216 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Mon, 21 Jul 2008 14:21:38 -0700 Subject: markers: fix duplicate modpost entry When a kernel was rebuilt, the previous Module.markers was not cleared. It caused markers with different format strings to appear as duplicates when a markers was changed. This problem is present since scripts/mod/modpost.c started to generate Module.markers, commit b2e3e658b344c6bcfb8fb694100ab2f2b5b2edb0 It therefore applies to 2.6.25, 2.6.26 and linux-next. I merely merged the patches from Roland, Wenji and Takashi here. Credits to Roland McGrath Wenji Huang and Takashi Nishiie for providing the individual fixes. - Changelog : - Integrated Takashi's Makefile modification to clear Module.markers upon make clean. Signed-off-by: Mathieu Desnoyers Cc: Roland McGrath Cc: Wenji Huang Cc: Takashi Nishiie Cc: [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Makefile | 3 ++- scripts/Makefile.modpost | 1 + scripts/mod/modpost.c | 3 ++- 3 files changed, 5 insertions(+), 2 deletions(-) (limited to 'Makefile') diff --git a/Makefile b/Makefile index 6192922de9c0..4bcd1cf90cb1 100644 --- a/Makefile +++ b/Makefile @@ -1148,7 +1148,8 @@ clean: archclean $(clean-dirs) @find . $(RCS_FIND_IGNORE) \ \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ - -o -name '*.symtypes' -o -name 'modules.order' \) \ + -o -name '*.symtypes' -o -name 'modules.order' \ + -o -name 'Module.markers' \) \ -type f -print | xargs rm -f # mrproper - Delete all generated files, including .config diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 17092d6c7db3..9ee9783aea57 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -101,6 +101,7 @@ quiet_cmd_kernel-mod = MODPOST $@ cmd_kernel-mod = $(modpost) $@ vmlinux.o: FORCE + @rm -fr $(kernelmarkersfile) $(call cmd,kernel-mod) # Declare generated files as targets for modpost diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index a07f91aac920..8f038e6d5f98 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -1992,7 +1992,8 @@ static void read_markers(const char *fname) mod->skip = 1; } - add_marker(mod, marker, fmt); + if (!mod->skip) + add_marker(mod, marker, fmt); } return; fail: -- cgit v1.3-8-gc7d7