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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: Bob Picco <bob.picco@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
bob picco 2014-03-03 11:54:42 -05:00 committed by David S. Miller
parent 9a3c4145af
commit f6d4fb5cc0
1 changed files with 65 additions and 0 deletions
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65
arch/sparc/mm/init_64.c
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@ -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);