diff options
Diffstat (limited to 'arch/powerpc/platforms/maple/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/maple/setup.c | 41 |
1 files changed, 19 insertions, 22 deletions
diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c index fe34c3d9bb74..5b3388b9f911 100644 --- a/arch/powerpc/platforms/maple/setup.c +++ b/arch/powerpc/platforms/maple/setup.c @@ -338,35 +338,16 @@ define_machine(maple) { #ifdef CONFIG_EDAC /* * Register a platform device for CPC925 memory controller on - * Motorola ATCA-6101 blade. + * all boards with U3H (CPC925) bridge. */ -#define MAPLE_CPC925_MODEL "Motorola,ATCA-6101" static int __init maple_cpc925_edac_setup(void) { struct platform_device *pdev; struct device_node *np = NULL; struct resource r; - const unsigned char *model; int ret; - - np = of_find_node_by_path("/"); - if (!np) { - printk(KERN_ERR "%s: Unable to get root node\n", __func__); - return -ENODEV; - } - - model = (const unsigned char *)of_get_property(np, "model", NULL); - if (!model) { - printk(KERN_ERR "%s: Unabel to get model info\n", __func__); - of_node_put(np); - return -ENODEV; - } - - ret = strcmp(model, MAPLE_CPC925_MODEL); - of_node_put(np); - - if (ret != 0) - return 0; + volatile void __iomem *mem; + u32 rev; np = of_find_node_by_type(NULL, "memory-controller"); if (!np) { @@ -384,6 +365,22 @@ static int __init maple_cpc925_edac_setup(void) return -ENODEV; } + mem = ioremap(r.start, resource_size(&r)); + if (!mem) { + printk(KERN_ERR "%s: Unable to map memory-controller memory\n", + __func__); + return -ENOMEM; + } + + rev = __raw_readl(mem); + iounmap(mem); + + if (rev < 0x34 || rev > 0x3f) { /* U3H */ + printk(KERN_ERR "%s: Non-CPC925(U3H) bridge revision: %02x\n", + __func__, rev); + return 0; + } + pdev = platform_device_register_simple("cpc925_edac", 0, &r, 1); if (IS_ERR(pdev)) return PTR_ERR(pdev); |