From 883a106b0866ca8d75b5520bdb3ca1cf8e3730ba Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 31 Jan 2013 17:51:18 +0000 Subject: ARM: default machine descriptor for multiplatform Since we now have default implementations for init_time and init_irq, the init_machine callback is the only one that is not yet optional, but since simple DT based platforms all have the same of_platform_populate function call in there, we can consolidate them as well, and then actually boot with a completely empty machine_desc. Unofortunately we cannot just default to an empty init_machine: We cannot call of_platform_populate before init_machine because that does not work in case of auxdata, and we cannot call it after init_machine either because the machine might need to run code after adding the devices. To take the final step, this adds support for booting without defining any machine_desc whatsoever. For the case that CONFIG_MULTIPLATFORM is enabled, it adds a global machine descriptor that never matches any machine but is used as a fallback if nothing else matches. We assume that without CONFIG_MULTIPLATFORM, we only want to boot on the systems that the kernel is built for, so we still retain the build-time warning for missing machine descriptors and the run-time warning when the platform does not match in that case. In the case that we run on a multiplatform kernel and the machine provides a fully populated device tree, we attempt to keep booting, hoping that no machine specific callbacks are necessary. Finally, this also removes the misguided "select ARCH_VEXPRESS" that was only added to avoid a build error for allnoconfig kernels. Signed-off-by: Arnd Bergmann Acked-by: Nicolas Pitre Acked-by: Olof Johansson Cc: "Russell King - ARM Linux" Cc: Rob Herring --- arch/arm/Kconfig | 1 - arch/arm/kernel/devtree.c | 7 +++++++ arch/arm/kernel/setup.c | 13 ++++++++++++- 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5bfd584929c8..f0f90f06f84b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1014,7 +1014,6 @@ config ARCH_MULTI_V7 bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)" default y select ARCH_MULTI_V6_V7 - select ARCH_VEXPRESS select CPU_V7 config ARCH_MULTI_V6_V7 diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 70f1bdeb241b..5af04f6daa33 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -180,6 +180,13 @@ struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) unsigned long dt_root; const char *model; +#ifdef CONFIG_ARCH_MULTIPLATFORM + DT_MACHINE_START(GENERIC_DT, "Generic DT based system") + MACHINE_END + + mdesc_best = (struct machine_desc *)&__mach_desc_GENERIC_DT; +#endif + if (!dt_phys) return NULL; diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 3f6cbb2e3eda..08a627b61b7d 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -640,9 +641,19 @@ struct screen_info screen_info = { static int __init customize_machine(void) { - /* customizes platform devices, or adds new ones */ + /* + * customizes platform devices, or adds new ones + * On DT based machines, we fall back to populating the + * machine from the device tree, if no callback is provided, + * otherwise we would always need an init_machine callback. + */ if (machine_desc->init_machine) machine_desc->init_machine(); +#ifdef CONFIG_OF + else + of_platform_populate(NULL, of_default_bus_match_table, + NULL, NULL); +#endif return 0; } arch_initcall(customize_machine); -- cgit v1.2.1 From 63cc846761306bfb539cd0adb9d577f28b753fd9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 30 Apr 2013 23:21:36 +0200 Subject: ARM: tegra: Tegra114 needs CPU_FREQ_TABLE Like the other Tegra SoCs using the same cpufreq driver, we have to enable CPU_FREQ_TABLE for this one. drivers/built-in.o: In function `tegra_cpu_exit': drivers/cpufreq/tegra-cpufreq.c:237: undefined reference to `cpufreq_frequency_table_cpuinfo' Signed-off-by: Arnd Bergmann Acked-by: Viresh Kumar Cc: Stephen Warren Cc: Hiroshi Doyu --- arch/arm/mach-tegra/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index d1c4893894ce..21008fef460c 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -48,6 +48,7 @@ config ARCH_TEGRA_114_SOC select ARM_ARCH_TIMER select ARM_GIC select ARM_L1_CACHE_SHIFT_6 + select CPU_FREQ_TABLE if CPU_FREQ select CPU_V7 select PINCTRL select PINCTRL_TEGRA114 -- cgit v1.2.1 From 572b16db7040ca606a35081c95f0d6ac0a435913 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 30 Apr 2013 22:24:50 +0200 Subject: ARM: OMAP: build SMP code only for OMAP4/5 The OMAP platform code assumes that SMP is only ever enabled when CONFIG_ARCH_OMAP4 or CONFIG_SOC_OMAP5 is enabled, which is not necessarirly true in a multiplatform configuration. arch/arm/mach-omap2/built-in.o: In function `omap4_smp_prepare_cpus': :(.init.text+0x413c): undefined reference to `omap_get_wakeupgen_base' :(.init.text+0x415c): undefined reference to `omap_secure_apis_support' arch/arm/mach-omap2/built-in.o: In function `omap4_boot_secondary': :(.cpuinit.text+0x28): undefined reference to `omap_get_wakeupgen_base' :(.cpuinit.text+0x3c): undefined reference to `omap_secure_apis_support' arch/arm/mach-omap2/built-in.o: In function `omap4_cpu_die': :(.ref.text+0x8): undefined reference to `omap_get_wakeupgen_base' :(.ref.text+0x10): undefined reference to `omap_secure_apis_support' :(.ref.text+0x4c): undefined reference to `omap4_hotplug_cpu' :(.ref.text+0x50): undefined reference to `omap_secure_apis_support' Signed-off-by: Arnd Bergmann Acked-by: Tony Lindgren --- arch/arm/mach-omap2/Makefile | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index b068b7fe99ef..302593fb76d2 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -32,12 +32,12 @@ obj-$(CONFIG_SOC_HAS_OMAP2_SDRC) += sdrc.o # SMP support ONLY available for OMAP4 -obj-$(CONFIG_SMP) += omap-smp.o omap-headsmp.o -obj-$(CONFIG_HOTPLUG_CPU) += omap-hotplug.o +smp-$(CONFIG_SMP) += omap-smp.o omap-headsmp.o +smp-$(CONFIG_HOTPLUG_CPU) += omap-hotplug.o omap-4-5-common = omap4-common.o omap-wakeupgen.o \ sleep44xx.o -obj-$(CONFIG_ARCH_OMAP4) += $(omap-4-5-common) -obj-$(CONFIG_SOC_OMAP5) += $(omap-4-5-common) +obj-$(CONFIG_ARCH_OMAP4) += $(omap-4-5-common) $(smp-y) +obj-$(CONFIG_SOC_OMAP5) += $(omap-4-5-common) $(smp-y) plus_sec := $(call as-instr,.arch_extension sec,+sec) AFLAGS_omap-headsmp.o :=-Wa,-march=armv7-a$(plus_sec) -- cgit v1.2.1 From cb48389bd6c6b827c2c0619063ce9f94fb8a370d Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 30 Apr 2013 17:57:00 +0200 Subject: ARM: imx: build CPU suspend code only when needed The ARM CPU suspend function has its own configuration symbol, which we need to use for conditionalizing any code calling into it as well. arch/arm/mach-imx/built-in.o: In function `v7_cpu_resume': /git/arm-soc/arch/arm/mach-imx/headsmp.S:57: undefined reference to `cpu_resume' Cc: Sascha Hauer Signed-off-by: Arnd Bergmann --- arch/arm/mach-imx/headsmp.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S index 921fc1555854..524e52e59d6c 100644 --- a/arch/arm/mach-imx/headsmp.S +++ b/arch/arm/mach-imx/headsmp.S @@ -24,7 +24,7 @@ ENTRY(v7_secondary_startup) ENDPROC(v7_secondary_startup) #endif -#ifdef CONFIG_PM +#ifdef CONFIG_ARM_CPU_SUSPEND /* * The following code is located into the .data section. This is to * allow phys_l2x0_saved_regs to be accessed with a relative load -- cgit v1.2.1 From 6343b05f0a77c5d76d291d15c5cf2d9cf1b4e700 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 30 Apr 2013 17:52:16 +0200 Subject: ARM: SPEAr: conditionalize l2x0 support If the cache controller implementation is disabled at build time, we must not call any functions related to it. arch/arm/mach-spear/built-in.o: In function `spear13xx_l2x0_init': arch/arm/mach-spear/spear13xx.c:47: undefined reference to `l2x0_init' Signed-off-by: Arnd Bergmann Acked-by: Viresh Kumar --- arch/arm/mach-spear13xx/spear13xx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-spear13xx/spear13xx.c b/arch/arm/mach-spear13xx/spear13xx.c index 25a10191b021..0dacf571ea72 100644 --- a/arch/arm/mach-spear13xx/spear13xx.c +++ b/arch/arm/mach-spear13xx/spear13xx.c @@ -92,6 +92,8 @@ void __init spear13xx_l2x0_init(void) * write alloc and 'Full line of zero' options * */ + if (!IS_ENABLED(CONFIG_CACHE_L2X0)) + return; writel_relaxed(0x06, VA_L2CC_BASE + L2X0_PREFETCH_CTRL); -- cgit v1.2.1 From cb0c480a4634b03b740fe82e256a8b988481e2bf Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 30 Apr 2013 13:21:41 +0200 Subject: ARM: SIRF: select SMP_ON_UP only on SMP builds Like all other platforms, we can only select SMP_ON_UP if SMP is also enabled. warning: (SOC_IMX31 && SOC_IMX35 && ARCH_MARCO) selects SMP_ON_UP which has unmet direct dependencies (SMP && !XIP_KERNEL) Cc: Barry Song Signed-off-by: Arnd Bergmann --- arch/arm/mach-prima2/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-prima2/Kconfig b/arch/arm/mach-prima2/Kconfig index 4f7379fe01e2..5e6ab9d6f50f 100644 --- a/arch/arm/mach-prima2/Kconfig +++ b/arch/arm/mach-prima2/Kconfig @@ -17,7 +17,7 @@ config ARCH_MARCO select ARM_GIC select CPU_V7 select HAVE_SMP - select SMP_ON_UP + select SMP_ON_UP if SMP help Support for CSR SiRFSoC ARM Cortex A9 Platform -- cgit v1.2.1 From ccefeea91cf4cb9ce6045a50c4550e5f7d5b00ad Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 30 Apr 2013 13:19:23 +0200 Subject: ARM: ux500: always select ABX500_CORE We are probably selecting more drivers than we should in ux500, but cleaning up that logic for good can be left for another time. Most of these could be converted into silent options in the future, since they are always enabled on ux500 and never needed elsewhere. As a fixup for 3.10, let's at least select the dependencies for the other drivers we already select, to make it consistent. warning: (UX500_SOC_COMMON) selects AB8500_CORE which has unmet direct dependencies (HAS_IOMEM && GENERIC_HARDIRQS && ABX500_CORE && MFD_DB8500_PRCMU) Signed-off-by: Arnd Bergmann Acked-by: Linus Walleij --- arch/arm/mach-ux500/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig index 3e5bbd0e5b23..350c36de7742 100644 --- a/arch/arm/mach-ux500/Kconfig +++ b/arch/arm/mach-ux500/Kconfig @@ -3,6 +3,8 @@ if ARCH_U8500 config UX500_SOC_COMMON bool default y + select ABX500_CORE + select AB8500_CORE select ARM_ERRATA_754322 select ARM_ERRATA_764369 if SMP select ARM_GIC -- cgit v1.2.1 From eb16d33273532533400cb95189aa50d6b734db57 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 18 Apr 2013 10:54:29 -0700 Subject: ARM: OMAP2+: Fix unmet direct dependencies for SERIAL_OMAP Commit 8a6201b9 (ARM: OMAP2+: Fix unmet direct dependencies for zoom for 8250 serial) fixed unmet direct dependencies for 8250, but failed to do the same for omap serial. This can cause the following warning: warning: (ARCH_OMAP2PLUS_TYPICAL) selects SERIAL_OMAP which has unmet direct dependencies (TTY && HAS_IOMEM && GENERIC_HARDIRQS && ARCH_OMAP2PLUS). We should not select drivers, they should be selected by the user. Fix the issue by removing the select and adding them to omap2plus_defconfig instead. Signed-off-by: Tony Lindgren Signed-off-by: Arnd Bergmann --- arch/arm/configs/omap2plus_defconfig | 2 ++ arch/arm/mach-omap2/Kconfig | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index b16bae2c9a60..7bc71ffa7a3e 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -134,6 +134,8 @@ CONFIG_SERIAL_8250_DETECT_IRQ=y CONFIG_SERIAL_8250_RSA=y CONFIG_SERIAL_AMBA_PL011=y CONFIG_SERIAL_AMBA_PL011_CONSOLE=y +CONFIG_SERIAL_OMAP=y +CONFIG_SERIAL_OMAP_CONSOLE=y CONFIG_HW_RANDOM=y CONFIG_I2C_CHARDEV=y CONFIG_SPI=y diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 49ac3dfebef9..25ed9547bfb0 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -36,8 +36,6 @@ config ARCH_OMAP2PLUS_TYPICAL select NEON if ARCH_OMAP3 || ARCH_OMAP4 || SOC_OMAP5 select PM_RUNTIME select REGULATOR - select SERIAL_OMAP - select SERIAL_OMAP_CONSOLE select TWL4030_CORE if ARCH_OMAP3 || ARCH_OMAP4 select TWL4030_POWER if ARCH_OMAP3 || ARCH_OMAP4 select VFP -- cgit v1.2.1