From f6d4fb5cc0475c36437a618db31cbb7f2bf7c282 Mon Sep 17 00:00:00 2001 From: bob picco Date: Mon, 3 Mar 2014 11:54:42 -0500 Subject: 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 Signed-off-by: David S. Miller --- arch/sparc/mm/init_64.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) (limited to 'arch/sparc/mm/init_64.c') diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 16b58ff11e65..9f4f532e2627 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -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); -- cgit v1.2.3