aboutsummaryrefslogtreecommitdiff
path: root/arch/sh/kernel
diff options
context:
space:
mode:
authorMagnus Damm <magnus.damm@gmail.com>2008-04-23 20:56:44 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-05-08 19:51:51 +0900
commit0146ba78b9339c27ed12545f9bdc208604354bb3 (patch)
tree1866ff99bce81899a671727a90d22b09372f8ebf /arch/sh/kernel
parent3d83984e99d80672b1d2e3c7dfdd393631883428 (diff)
sh: add memory resources to /proc/iomem
Add physical memory resources such as System RAM, Kernel code/data/bss and reserved crash dump area to /proc/iomem. Same strategy as on x86. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/setup.c38
1 files changed, 37 insertions, 1 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index c9fb912a78e..516bde9c50f 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -87,6 +87,8 @@ EXPORT_SYMBOL(memory_start);
unsigned long memory_end = 0;
EXPORT_SYMBOL(memory_end);
+static struct resource mem_resources[MAX_NUMNODES];
+
int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
static int __init early_parse_mem(char *p)
@@ -175,6 +177,40 @@ static inline void __init reserve_crashkernel(void)
{}
#endif
+void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
+ unsigned long end_pfn)
+{
+ struct resource *res = &mem_resources[nid];
+
+ WARN_ON(res->name); /* max one active range per node for now */
+
+ res->name = "System RAM";
+ res->start = start_pfn << PAGE_SHIFT;
+ res->end = (end_pfn << PAGE_SHIFT) - 1;
+ res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ if (request_resource(&iomem_resource, res)) {
+ pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
+ start_pfn, end_pfn);
+ return;
+ }
+
+ /*
+ * We don't know which RAM region contains kernel data,
+ * so we try it repeatedly and let the resource manager
+ * test it.
+ */
+ request_resource(res, &code_resource);
+ request_resource(res, &data_resource);
+ request_resource(res, &bss_resource);
+
+#ifdef CONFIG_KEXEC
+ if (crashk_res.start != crashk_res.end)
+ request_resource(res, &crashk_res);
+#endif
+
+ add_active_range(nid, start_pfn, end_pfn);
+}
+
void __init setup_bootmem_allocator(unsigned long free_pfn)
{
unsigned long bootmap_size;
@@ -187,7 +223,7 @@ void __init setup_bootmem_allocator(unsigned long free_pfn)
bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn,
min_low_pfn, max_low_pfn);
- add_active_range(0, min_low_pfn, max_low_pfn);
+ __add_active_range(0, min_low_pfn, max_low_pfn);
register_bootmem_low_pages();
node_set_online(0);