powerpc/powernv: Add interfaces for flash device access

[firefly-linux-kernel-4.4.55.git] / arch / powerpc / platforms / powernv / opal.c

diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index d403b2b0862675d0321ad3014401f4baac1fee53..2241565b0739ff3bc6dc84f9bc6c63c70edf8b8c 100644 (file)
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -693,6 +693,15 @@ static void __init opal_dump_region_init(void)
                        "rc = %d\n", rc);
 }
 
+static void opal_flash_init(struct device_node *opal_node)
+{
+       struct device_node *np;
+
+       for_each_child_of_node(opal_node, np)
+               if (of_device_is_compatible(np, "ibm,opal-flash"))
+                       of_platform_device_create(np, NULL, NULL);
+}
+
 static void opal_ipmi_init(struct device_node *opal_node)
 {
        struct device_node *np;
@@ -817,7 +826,7 @@ static int __init opal_init(void)
                /* Setup error log interface */
                rc = opal_elog_init();
                /* Setup code update interface */
-               opal_flash_init();
+               opal_flash_update_init();
                /* Setup platform dump extract interface */
                opal_platform_dump_init();
                /* Setup system parameters interface */
@@ -829,6 +838,8 @@ static int __init opal_init(void)
        /* Initialize OPAL IPMI backend */
        opal_ipmi_init(opal_node);
 
+       opal_flash_init(opal_node);
+
        return 0;
 }
 machine_subsys_initcall(powernv, opal_init);
@@ -867,6 +878,9 @@ void opal_shutdown(void)
 EXPORT_SYMBOL_GPL(opal_invalid_call);
 EXPORT_SYMBOL_GPL(opal_ipmi_send);
 EXPORT_SYMBOL_GPL(opal_ipmi_recv);
+EXPORT_SYMBOL_GPL(opal_flash_read);
+EXPORT_SYMBOL_GPL(opal_flash_write);
+EXPORT_SYMBOL_GPL(opal_flash_erase);
 
 /* Convert a region of vmalloc memory to an opal sg list */
 struct opal_sg_list *opal_vmalloc_to_sg_list(void *vmalloc_addr,
@@ -931,6 +945,25 @@ void opal_free_sg_list(struct opal_sg_list *sg)
        }
 }
 
+int opal_error_code(int rc)
+{
+       switch (rc) {
+       case OPAL_SUCCESS:              return 0;
+
+       case OPAL_PARAMETER:            return -EINVAL;
+       case OPAL_ASYNC_COMPLETION:     return -EINPROGRESS;
+       case OPAL_BUSY_EVENT:           return -EBUSY;
+       case OPAL_NO_MEM:               return -ENOMEM;
+
+       case OPAL_UNSUPPORTED:          return -EIO;
+       case OPAL_HARDWARE:             return -EIO;
+       case OPAL_INTERNAL_ERROR:       return -EIO;
+       default:
+               pr_err("%s: unexpected OPAL error %d\n", __func__, rc);
+               return -EIO;
+       }
+}
+
 EXPORT_SYMBOL_GPL(opal_poll_events);
 EXPORT_SYMBOL_GPL(opal_rtc_read);
 EXPORT_SYMBOL_GPL(opal_rtc_write);