Commit e8823d26 authored by Paul Burton's avatar Paul Burton Committed by Ralf Baechle
Browse files

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: default avatarPaul 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: default avatarRalf Baechle <ralf@linux-mips.org>
parent 56d4c99b
......@@ -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
......
dtb-$(CONFIG_MIPS_MALTA) += malta.dtb
dtb-$(CONFIG_MIPS_SEAD3) += sead3.dtb
obj-y += $(patsubst %.dtb, %.dtb.o, $(dtb-y))
......
/dts-v1/;
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "mti,malta";
};
......@@ -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
......
/*
* 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);
......@@ -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");
......
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