ARM: 7505/1: split out ATAGS parsing

Make ATAGS parsing into a source file of its own, namely atags_parse.c.
Also rename compat.c to atags_compat.c to make it clearer what it is
about.  Same for atags.c which is now atags_proc.c. Gather all the atags
function declarations into a common atags.h.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 0 insertions, 83 deletions

diff --git a/arch/arm/kernel/atags.c b/arch/arm/kernel/atags.c
deleted file mode 100644
index 42a1a1415fa6..000000000000
--- a/arch/arm/kernel/atags.c
+++ /dev/null
@@ -1,83 +0,0 @@
-#include <linux/slab.h>
-#include <linux/proc_fs.h>
-#include <asm/setup.h>
-#include <asm/types.h>
-#include <asm/page.h>
-
-struct buffer {
-	size_t size;
-	char data[];
-};
-
-static int
-read_buffer(char* page, char** start, off_t off, int count,
-	int* eof, void* data)
-{
-	struct buffer *buffer = (struct buffer *)data;
-
-	if (off >= buffer->size) {
-		*eof = 1;
-		return 0;
-	}
-
-	count = min((int) (buffer->size - off), count);
-
-	memcpy(page, &buffer->data[off], count);
-
-	return count;
-}
-
-#define BOOT_PARAMS_SIZE 1536
-static char __initdata atags_copy[BOOT_PARAMS_SIZE];
-
-void __init save_atags(const struct tag *tags)
-{
-	memcpy(atags_copy, tags, sizeof(atags_copy));
-}
-
-static int __init init_atags_procfs(void)
-{
-	/*
-	 * This cannot go into save_atags() because kmalloc and proc don't work
-	 * yet when it is called.
-	 */
-	struct proc_dir_entry *tags_entry;
-	struct tag *tag = (struct tag *)atags_copy;
-	struct buffer *b;
-	size_t size;
-
-	if (tag->hdr.tag != ATAG_CORE) {
-		printk(KERN_INFO "No ATAGs?");
-		return -EINVAL;
-	}
-
-	for (; tag->hdr.size; tag = tag_next(tag))
-		;
-
-	/* include the terminating ATAG_NONE */
-	size = (char *)tag - atags_copy + sizeof(struct tag_header);
-
-	WARN_ON(tag->hdr.tag != ATAG_NONE);
-
-	b = kmalloc(sizeof(*b) + size, GFP_KERNEL);
-	if (!b)
-		goto nomem;
-
-	b->size = size;
-	memcpy(b->data, atags_copy, size);
-
-	tags_entry = create_proc_read_entry("atags", 0400,
-			NULL, read_buffer, b);
-
-	if (!tags_entry)
-		goto nomem;
-
-	return 0;
-
-nomem:
-	kfree(b);
-	printk(KERN_ERR "Exporting ATAGs: not enough memory\n");
-
-	return -ENOMEM;
-}
-arch_initcall(init_atags_procfs);