Commit f6d4fb5c authored by bob picco's avatar bob picco Committed by David S. Miller
Browse files

sparc64 - add mem to iomem resource 



This patch adds sparc RAM to /proc/iomem. It also identifies the
code, data and bss regions of the kernel.

Signed-off-by: default avatarBob Picco <bob.picco@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9a3c4145

arch/sparc/mm/init_64.c

+65 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
#include <linux/kprobes.h>

#include <linux/cache.h>

#include <linux/sort.h>

#include <linux/ioport.h>

#include <linux/percpu.h>

#include <linux/memblock.h>

#include <linux/mmzone.h>
@@ -2699,3 +2700,67 @@ void hugetlb_setup(struct pt_regs *regs) 
	}

}

#endif



static struct resource code_resource = {

	.name	= "Kernel code",

	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM

};



static struct resource data_resource = {

	.name	= "Kernel data",

	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM

};



static struct resource bss_resource = {

	.name	= "Kernel bss",

	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM

};



static inline resource_size_t compute_kern_paddr(void *addr)

{

	return (resource_size_t) (addr - KERNBASE + kern_base);

}



static void __init kernel_lds_init(void)

{

	code_resource.start = compute_kern_paddr(_text);

	code_resource.end   = compute_kern_paddr(_etext - 1);

	data_resource.start = compute_kern_paddr(_etext);

	data_resource.end   = compute_kern_paddr(_edata - 1);

	bss_resource.start  = compute_kern_paddr(__bss_start);

	bss_resource.end    = compute_kern_paddr(_end - 1);

}



static int __init report_memory(void)

{

	int i;

	struct resource *res;



	kernel_lds_init();



	for (i = 0; i < pavail_ents; i++) {

		res = kzalloc(sizeof(struct resource), GFP_KERNEL);



		if (!res) {

			pr_warn("Failed to allocate source.\n");

			break;

		}



		res->name = "System RAM";

		res->start = pavail[i].phys_addr;

		res->end = pavail[i].phys_addr + pavail[i].reg_size - 1;

		res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;



		if (insert_resource(&iomem_resource, res) < 0) {

			pr_warn("Resource insertion failed.\n");

			break;

		}



		insert_resource(res, &code_resource);

		insert_resource(res, &data_resource);

		insert_resource(res, &bss_resource);

	}



	return 0;

}

device_initcall(report_memory);