C6X: build infrastructure

Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter <msalter@redhat.com>

Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 174 insertions, 0 deletions

diff --git a/arch/c6x/kernel/Makefile b/arch/c6x/kernel/Makefile
new file mode 100644
index 00000000000..580a515a944
--- /dev/null
+++ b/arch/c6x/kernel/Makefile
@@ -0,0 +1,12 @@
+#
+# Makefile for arch/c6x/kernel/
+#
+
+extra-y := head.o vmlinux.lds
+
+obj-y := process.o traps.o irq.o signal.o ptrace.o
+obj-y += setup.o sys_c6x.o time.o devicetree.o
+obj-y += switch_to.o entry.o vectors.o c6x_ksyms.o
+obj-y += soc.o dma.o
+
+obj-$(CONFIG_MODULES)           += module.o
diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
new file mode 100644
index 00000000000..1d81c4c129e
--- /dev/null
+++ b/arch/c6x/kernel/vmlinux.lds.S
@@ -0,0 +1,162 @@
+/*
+ * ld script for the c6x kernel
+ *
+ *  Copyright (C) 2010, 2011 Texas Instruments Incorporated
+ *  Mark Salter <msalter@redhat.com>
+ */
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+
+ENTRY(_c_int00)
+
+#if defined(CONFIG_CPU_BIG_ENDIAN)
+jiffies = jiffies_64 + 4;
+#else
+jiffies = jiffies_64;
+#endif
+
+#define READONLY_SEGMENT_START  \
+        . = PAGE_OFFSET;
+#define READWRITE_SEGMENT_START \
+        . = ALIGN(128);         \
+        _data_lma = .;
+
+SECTIONS
+{
+        /*
+         * Start kernel read only segment
+         */
+        READONLY_SEGMENT_START
+
+        .vectors :
+        {
+                _vectors_start = .;
+                *(.vectors)
+                . = ALIGN(0x400);
+                _vectors_end = .;
+        }
+
+        . = ALIGN(0x1000);
+        .cmdline :
+        {
+                *(.cmdline)
+        }
+
+        /*
+         * This section contains data which may be shared with other
+         * cores. It needs to be a fixed offset from PAGE_OFFSET
+         * regardless of kernel configuration.
+         */
+        .virtio_ipc_dev :
+        {
+                *(.virtio_ipc_dev)
+        }
+
+        . = ALIGN(PAGE_SIZE);
+        .init :
+        {
+                _stext = .;
+                _sinittext = .;
+                HEAD_TEXT
+                INIT_TEXT
+                _einittext = .;
+        }
+
+        __init_begin = _stext;
+        INIT_DATA_SECTION(16)
+
+        PERCPU_SECTION(128)
+
+        . = ALIGN(PAGE_SIZE);
+        __init_end = .;
+
+        .text :
+        {
+                _text = .;
+                TEXT_TEXT
+                SCHED_TEXT
+                LOCK_TEXT
+                IRQENTRY_TEXT
+                KPROBES_TEXT
+                *(.fixup)
+                *(.gnu.warning)
+        }
+
+        EXCEPTION_TABLE(16)
+        NOTES
+
+        RO_DATA_SECTION(PAGE_SIZE)
+        .const :
+        {
+                *(.const .const.* .gnu.linkonce.r.*)
+                *(.switch)
+        }
+
+        . = ALIGN (8) ;
+        __fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET)
+        {
+                _fdt_start = . ;        /* place for fdt blob */
+                *(__fdt_blob) ;         /* Any link-placed DTB */
+                BYTE(0);                /* section always has contents */
+                . = _fdt_start + 0x4000;        /* Pad up to 16kbyte */
+                _fdt_end = . ;
+        }
+
+        _etext = .;
+
+        /*
+         * Start kernel read-write segment.
+         */
+        READWRITE_SEGMENT_START
+        _sdata = .;
+
+        .fardata : AT(ADDR(.fardata) - LOAD_OFFSET)
+        {
+                INIT_TASK_DATA(THREAD_SIZE)
+                NOSAVE_DATA
+                PAGE_ALIGNED_DATA(PAGE_SIZE)
+                CACHELINE_ALIGNED_DATA(128)
+                READ_MOSTLY_DATA(128)
+                DATA_DATA
+                CONSTRUCTORS
+                *(.data1)
+                *(.fardata .fardata.*)
+                *(.data.debug_bpt)
+        }
+
+        .neardata ALIGN(8) : AT(ADDR(.neardata) - LOAD_OFFSET)
+        {
+                *(.neardata2 .neardata2.* .gnu.linkonce.s2.*)
+                *(.neardata .neardata.* .gnu.linkonce.s.*)
+                . = ALIGN(8);
+        }
+
+        _edata = .;
+
+        __bss_start = .;
+        SBSS(8)
+        BSS(8)
+        .far :
+        {
+                . = ALIGN(8);
+                *(.dynfar)
+                *(.far .far.* .gnu.linkonce.b.*)
+                . = ALIGN(8);
+        }
+        __bss_stop = .;
+
+        _end = .;
+
+        DWARF_DEBUG
+
+        /DISCARD/ :
+        {
+                  EXIT_TEXT
+                  EXIT_DATA
+                  EXIT_CALL
+                  *(.discard)
+                  *(.discard.*)
+                  *(.interp)
+        }
+}