/* * Copyright (C) 2004 - 2007  Paul Mundt * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. */#include <linux/mm.h>#include <linux/init.h>#include <linux/platform_device.h>#include <linux/dma-mapping.h>#include <linux/io.h> static int __init memchunk_setup(char *str){	return 1; /* accept anything that begins with "memchunk." */}__setup("memchunk.", memchunk_setup); static void __init memchunk_cmdline_override(char *name, unsigned long *sizep){	char *p = boot_command_line;	int k = strlen(name); 	while ((p = strstr(p, "memchunk."))) {		p += 9; /* strlen("memchunk.") */		if (!strncmp(name, p, k) && p[k] == '=') {			p += k + 1;			*sizep = memparse(p, NULL);			pr_info("%s: forcing memory chunk size to 0x%08lx\n",				name, *sizep);			break;		}	}} int __init platform_resource_setup_memory(struct platform_device *pdev,					  char *name, unsigned long memsize){	struct resource *r;	dma_addr_t dma_handle;	void *buf; 	r = pdev->resource + pdev->num_resources - 1;	if (r->flags) {		pr_warn("%s: unable to find empty space for resource\n", name);		return -EINVAL;	} 	memchunk_cmdline_override(name, &memsize);	if (!memsize)		return 0; 	buf = dma_alloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL);	if (!buf) {		pr_warn("%s: unable to allocate memory\n", name);		return -ENOMEM;	} 	r->flags = IORESOURCE_MEM;	r->start = dma_handle;	r->end = r->start + memsize - 1;	r->name = name;	return 0;}