OpenRISC: Build infrastructure

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 129 insertions, 0 deletions

diff --git a/arch/openrisc/kernel/Makefile b/arch/openrisc/kernel/Makefile
new file mode 100644
index 000000000000..9a4c2706d795
--- /dev/null
+++ b/arch/openrisc/kernel/Makefile
@@ -0,0 +1,14 @@
+#
+# Makefile for the linux kernel.
+#
+
+extra-y := head.o vmlinux.lds init_task.o
+
+obj-y   := setup.o idle.o or32_ksyms.o process.o dma.o \
+           traps.o time.o irq.o entry.o ptrace.o signal.o sys_or32.o \
+           sys_call_table.o
+
+obj-$(CONFIG_MODULES)           += module.o
+obj-$(CONFIG_OF)                += prom.o
+
+clean:
diff --git a/arch/openrisc/kernel/vmlinux.lds.S b/arch/openrisc/kernel/vmlinux.lds.S
new file mode 100644
index 000000000000..2d69a853b742
--- /dev/null
+++ b/arch/openrisc/kernel/vmlinux.lds.S
@@ -0,0 +1,115 @@
+/*
+ * OpenRISC vmlinux.lds.S
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others.  All original copyrights apply as per the original source
+ * declaration.
+ *
+ * Modifications for the OpenRISC architecture:
+ * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ *
+ *      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.
+ *
+ * ld script for OpenRISC architecture
+ */
+
+/* TODO
+ *              - clean up __offset & stuff
+ *              - change all 8192 aligment to PAGE !!!
+ *              - recheck if all aligments are really needed
+ */
+
+#  define LOAD_OFFSET  PAGE_OFFSET
+#  define LOAD_BASE    PAGE_OFFSET
+
+#include <asm/page.h>
+#include <asm/cache.h>
+#include <asm-generic/vmlinux.lds.h>
+
+OUTPUT_FORMAT("elf32-or32", "elf32-or32", "elf32-or32")
+jiffies = jiffies_64 + 4;
+
+SECTIONS
+{
+        /* Read-only sections, merged into text segment: */
+        . = LOAD_BASE ;
+
+        /* _s_kernel_ro must be page aligned */
+        . = ALIGN(PAGE_SIZE);
+        _s_kernel_ro = .;
+
+        .text                   : AT(ADDR(.text) - LOAD_OFFSET)
+        {
+          _stext = .;
+          TEXT_TEXT
+          SCHED_TEXT
+          LOCK_TEXT
+          KPROBES_TEXT
+          IRQENTRY_TEXT
+          *(.fixup)
+          *(.text.__*)
+          _etext = .;
+        }
+        /* TODO: Check if fixup and text.__* are really necessary
+         * fixup is definitely necessary
+         */
+
+        _sdata = .;
+
+        /* Page alignment required for RO_DATA_SECTION */
+        RO_DATA_SECTION(PAGE_SIZE)
+        _e_kernel_ro = .;
+
+        /* Whatever comes after _e_kernel_ro had better be page-aligend, too */
+
+        /* 32 here is cacheline size... recheck this */
+        RW_DATA_SECTION(32, PAGE_SIZE, PAGE_SIZE)
+
+        _edata  =  .;
+
+        EXCEPTION_TABLE(4)
+        NOTES
+
+        /* Init code and data */
+        . = ALIGN(PAGE_SIZE);
+        __init_begin = .;
+
+        HEAD_TEXT_SECTION
+
+        /* Page aligned */
+        INIT_TEXT_SECTION(PAGE_SIZE)
+
+        /* Align __setup_start on 16 byte boundary */
+        INIT_DATA_SECTION(16)
+
+        PERCPU_SECTION(L1_CACHE_BYTES)
+
+        __init_end = .;
+
+        . = ALIGN(PAGE_SIZE);
+        .initrd                 : AT(ADDR(.initrd) - LOAD_OFFSET)
+        {
+                __initrd_start = .;
+                *(.initrd)
+                __initrd_end = .;
+                FILL (0);
+                . = ALIGN (PAGE_SIZE);
+        }
+
+        __vmlinux_end = .;            /* last address of the physical file */
+
+        BSS_SECTION(0, 0, 0x20)
+
+        _end = .;
+
+        /* Throw in the debugging sections */
+        STABS_DEBUG
+        DWARF_DEBUG
+
+        /* Sections to be discarded -- must be last */
+        DISCARDS
+}