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author | Paul Burton <paul.burton@imgtec.com> | 2015-05-22 16:51:02 +0100 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2015-06-21 21:54:29 +0200 |
commit | e8823d26b4f18faeecf8f46adaecc52a7154c41f (patch) | |
tree | bd371a764309fb9b197fb52e81f425f3cdae09cf /arch/mips | |
parent | 56d4c99b848ce3a07cf3643e1f2dc78419f0f954 (diff) | |
download | op-kernel-dev-e8823d26b4f18faeecf8f46adaecc52a7154c41f.zip op-kernel-dev-e8823d26b4f18faeecf8f46adaecc52a7154c41f.tar.gz |
MIPS: Malta: Basic DT plumbing
Build a DT for the Malta platform into the kernel, load it & probe
devices from it. The DT is essentially empty at this point, devices
will be added in further patches.
[ralf@linux-mips.org: Fixed conflicts.]
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/10119/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/Kconfig | 2 | ||||
-rw-r--r-- | arch/mips/boot/dts/mti/Makefile | 1 | ||||
-rw-r--r-- | arch/mips/boot/dts/mti/malta.dts | 7 | ||||
-rw-r--r-- | arch/mips/mti-malta/Makefile | 2 | ||||
-rw-r--r-- | arch/mips/mti-malta/malta-dt.c | 34 | ||||
-rw-r--r-- | arch/mips/mti-malta/malta-setup.c | 4 |
6 files changed, 49 insertions, 1 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 5e8ba71..d53b432 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -404,6 +404,7 @@ config MIPS_MALTA select ARCH_MAY_HAVE_PC_FDC select BOOT_ELF32 select BOOT_RAW + select BUILTIN_DTB select CEVT_R4K select CSRC_R4K select CLKSRC_MIPS_GIC @@ -443,6 +444,7 @@ config MIPS_MALTA select SYS_SUPPORTS_MULTITHREADING select SYS_SUPPORTS_SMARTMIPS select SYS_SUPPORTS_ZBOOT + select USE_OF select ZONE_DMA32 if 64BIT help This enables support for the MIPS Technologies Malta evaluation diff --git a/arch/mips/boot/dts/mti/Makefile b/arch/mips/boot/dts/mti/Makefile index ef1f3db..144d776 100644 --- a/arch/mips/boot/dts/mti/Makefile +++ b/arch/mips/boot/dts/mti/Makefile @@ -1,3 +1,4 @@ +dtb-$(CONFIG_MIPS_MALTA) += malta.dtb dtb-$(CONFIG_MIPS_SEAD3) += sead3.dtb obj-y += $(patsubst %.dtb, %.dtb.o, $(dtb-y)) diff --git a/arch/mips/boot/dts/mti/malta.dts b/arch/mips/boot/dts/mti/malta.dts new file mode 100644 index 0000000..c678115 --- /dev/null +++ b/arch/mips/boot/dts/mti/malta.dts @@ -0,0 +1,7 @@ +/dts-v1/; + +/ { + #address-cells = <1>; + #size-cells = <1>; + compatible = "mti,malta"; +}; diff --git a/arch/mips/mti-malta/Makefile b/arch/mips/mti-malta/Makefile index 6510ace..ea35587 100644 --- a/arch/mips/mti-malta/Makefile +++ b/arch/mips/mti-malta/Makefile @@ -5,7 +5,7 @@ # Copyright (C) 2008 Wind River Systems, Inc. # written by Ralf Baechle <ralf@linux-mips.org> # -obj-y := malta-display.o malta-init.o \ +obj-y := malta-display.o malta-dt.o malta-init.o \ malta-int.o malta-memory.o malta-platform.o \ malta-reset.o malta-setup.o malta-time.o diff --git a/arch/mips/mti-malta/malta-dt.c b/arch/mips/mti-malta/malta-dt.c new file mode 100644 index 0000000..47a2288 --- /dev/null +++ b/arch/mips/mti-malta/malta-dt.c @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2015 Imagination Technologies + * Author: Paul Burton <paul.burton@imgtec.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/clk-provider.h> +#include <linux/init.h> +#include <linux/of_fdt.h> +#include <linux/of_platform.h> + +void __init device_tree_init(void) +{ + unflatten_and_copy_device_tree(); +} + +static const struct of_device_id bus_ids[] __initconst = { + { .compatible = "simple-bus", }, + { .compatible = "isa", }, + {}, +}; + +static int __init publish_devices(void) +{ + if (!of_have_populated_dt()) + return 0; + + return of_platform_bus_probe(NULL, bus_ids, NULL); +} +device_initcall(publish_devices); diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index db7c9e5..9d1e7f5 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -21,6 +21,7 @@ #include <linux/sched.h> #include <linux/ioport.h> #include <linux/irq.h> +#include <linux/of_fdt.h> #include <linux/pci.h> #include <linux/screen_info.h> #include <linux/time.h> @@ -31,6 +32,7 @@ #include <asm/mips-boards/malta.h> #include <asm/mips-boards/maltaint.h> #include <asm/dma.h> +#include <asm/prom.h> #include <asm/traps.h> #ifdef CONFIG_VT #include <linux/console.h> @@ -249,6 +251,8 @@ void __init plat_mem_setup(void) { unsigned int i; + __dt_setup_arch(__dtb_start); + if (config_enabled(CONFIG_EVA)) /* EVA has already been configured in mach-malta/kernel-init.h */ pr_info("Enhanced Virtual Addressing (EVA) activated\n"); |