Merge tag 'x86_microcode_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 microcode and IFS updates from Borislav Petkov:
 "The IFS (In-Field Scan) stuff goes through tip because the IFS driver
  uses the same structures and similar functionality as the microcode
  loader and it made sense to route it all through this branch so that
  there are no conflicts.

   - Add support for multiple testing sequences to the Intel In-Field
     Scan driver in order to be able to run multiple different test
     patterns. Rework things and remove the BROKEN dependency so that
     the driver can be enabled (Jithu Joseph)

   - Remove the subsys interface usage in the microcode loader because
     it is not really needed

   - A couple of smaller fixes and cleanups"

* tag 'x86_microcode_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/microcode/intel: Do not retry microcode reloading on the APs
  x86/microcode/intel: Do not print microcode revision and processor flags
  platform/x86/intel/ifs: Add missing kernel-doc entry
  Revert "platform/x86/intel/ifs: Mark as BROKEN"
  Documentation/ABI: Update IFS ABI doc
  platform/x86/intel/ifs: Add current_batch sysfs entry
  platform/x86/intel/ifs: Remove reload sysfs entry
  platform/x86/intel/ifs: Add metadata validation
  platform/x86/intel/ifs: Use generic microcode headers and functions
  platform/x86/intel/ifs: Add metadata support
  x86/microcode/intel: Use a reserved field for metasize
  x86/microcode/intel: Add hdr_type to intel_microcode_sanity_check()
  x86/microcode/intel: Reuse microcode_sanity_check()
  x86/microcode/intel: Use appropriate type in microcode_sanity_check()
  x86/microcode/intel: Reuse find_matching_signature()
  platform/x86/intel/ifs: Remove memory allocation from load path
  platform/x86/intel/ifs: Remove image loading during init
  platform/x86/intel/ifs: Return a more appropriate error code
  platform/x86/intel/ifs: Remove unused selection
  x86/microcode: Drop struct ucode_cpu_info.valid
  ...

6 files changed, 191 insertions, 135 deletions

diff --git a/drivers/platform/x86/intel/ifs/Kconfig b/drivers/platform/x86/intel/ifs/Kconfig
index c341a27cc1a3..3eded966757e 100644
--- a/drivers/platform/x86/intel/ifs/Kconfig
+++ b/drivers/platform/x86/intel/ifs/Kconfig
@@ -1,10 +1,6 @@
 config INTEL_IFS
 	tristate "Intel In Field Scan"
 	depends on X86 && CPU_SUP_INTEL && 64BIT && SMP
-	# Discussion on the list has shown that the sysfs API needs a bit
-	# more work, mark this as broken for now
-	depends on BROKEN
-	select INTEL_IFS_DEVICE
 	help
 	  Enable support for the In Field Scan capability in select
 	  CPUs. The capability allows for running low level tests via
diff --git a/drivers/platform/x86/intel/ifs/core.c b/drivers/platform/x86/intel/ifs/core.c
index 27204e3d674d..206a617c2e02 100644
--- a/drivers/platform/x86/intel/ifs/core.c
+++ b/drivers/platform/x86/intel/ifs/core.c
@@ -4,6 +4,7 @@
 #include <linux/module.h>
 #include <linux/kdev_t.h>
 #include <linux/semaphore.h>
+#include <linux/slab.h>
 
 #include <asm/cpu_device_id.h>
 
@@ -22,6 +23,7 @@ MODULE_DEVICE_TABLE(x86cpu, ifs_cpu_ids);
 static struct ifs_device ifs_device = {
 	.data = {
 		.integrity_cap_bit = MSR_INTEGRITY_CAPS_PERIODIC_BIST_BIT,
+		.test_num = 0,
 	},
 	.misc = {
 		.name = "intel_ifs_0",
@@ -34,6 +36,7 @@ static int __init ifs_init(void)
 {
 	const struct x86_cpu_id *m;
 	u64 msrval;
+	int ret;
 
 	m = x86_match_cpu(ifs_cpu_ids);
 	if (!m)
@@ -50,20 +53,26 @@ static int __init ifs_init(void)
 
 	ifs_device.misc.groups = ifs_get_groups();
 
-	if ((msrval & BIT(ifs_device.data.integrity_cap_bit)) &&
-	    !misc_register(&ifs_device.misc)) {
-		down(&ifs_sem);
-		ifs_load_firmware(ifs_device.misc.this_device);
-		up(&ifs_sem);
-		return 0;
+	if (!(msrval & BIT(ifs_device.data.integrity_cap_bit)))
+		return -ENODEV;
+
+	ifs_device.data.pkg_auth = kmalloc_array(topology_max_packages(), sizeof(bool), GFP_KERNEL);
+	if (!ifs_device.data.pkg_auth)
+		return -ENOMEM;
+
+	ret = misc_register(&ifs_device.misc);
+	if (ret) {
+		kfree(ifs_device.data.pkg_auth);
+		return ret;
 	}
 
-	return -ENODEV;
+	return 0;
 }
 
 static void __exit ifs_exit(void)
 {
 	misc_deregister(&ifs_device.misc);
+	kfree(ifs_device.data.pkg_auth);
 }
 
 module_init(ifs_init);
diff --git a/drivers/platform/x86/intel/ifs/ifs.h b/drivers/platform/x86/intel/ifs/ifs.h
index 73c8e91cf144..046e39304fd5 100644
--- a/drivers/platform/x86/intel/ifs/ifs.h
+++ b/drivers/platform/x86/intel/ifs/ifs.h
@@ -33,13 +33,23 @@
  * The driver loads the tests into memory reserved BIOS local to each CPU
  * socket in a two step process using writes to MSRs to first load the
  * SHA hashes for the test. Then the tests themselves. Status MSRs provide
- * feedback on the success/failure of these steps. When a new test file
- * is installed it can be loaded by writing to the driver reload file::
+ * feedback on the success/failure of these steps.
  *
- *   # echo 1 > /sys/devices/virtual/misc/intel_ifs_0/reload
+ * The test files are kept in a fixed location: /lib/firmware/intel/ifs_0/
+ * For e.g if there are 3 test files, they would be named in the following
+ * fashion:
+ * ff-mm-ss-01.scan
+ * ff-mm-ss-02.scan
+ * ff-mm-ss-03.scan
+ * (where ff refers to family, mm indicates model and ss indicates stepping)
  *
- * Similar to microcode, the current version of the scan tests is stored
- * in a fixed location: /lib/firmware/intel/ifs.0/family-model-stepping.scan
+ * A different test file can be loaded by writing the numerical portion
+ * (e.g 1, 2 or 3 in the above scenario) into the curent_batch file.
+ * To load ff-mm-ss-02.scan, the following command can be used::
+ *
+ *   # echo 2 > /sys/devices/virtual/misc/intel_ifs_0/current_batch
+ *
+ * The above file can also be read to know the currently loaded image.
  *
  * Running tests
  * -------------
@@ -191,20 +201,26 @@ union ifs_status {
  * struct ifs_data - attributes related to intel IFS driver
  * @integrity_cap_bit: MSR_INTEGRITY_CAPS bit enumerating this test
  * @loaded_version: stores the currently loaded ifs image version.
+ * @pkg_auth: array of bool storing per package auth status
  * @loaded: If a valid test binary has been loaded into the memory
  * @loading_error: Error occurred on another CPU while loading image
  * @valid_chunks: number of chunks which could be validated.
  * @status: it holds simple status pass/fail/untested
  * @scan_details: opaque scan status code from h/w
+ * @cur_batch: number indicating the currently loaded test file
+ * @test_num: number indicating the test type
  */
 struct ifs_data {
 	int	integrity_cap_bit;
+	bool	*pkg_auth;
 	int	loaded_version;
 	bool	loaded;
 	bool	loading_error;
 	int	valid_chunks;
 	int	status;
 	u64	scan_details;
+	u32	cur_batch;
+	int	test_num;
 };
 
 struct ifs_work {
@@ -225,10 +241,8 @@ static inline struct ifs_data *ifs_get_data(struct device *dev)
 	return &d->data;
 }
 
-void ifs_load_firmware(struct device *dev);
+int ifs_load_firmware(struct device *dev);
 int do_core_test(int cpu, struct device *dev);
 const struct attribute_group **ifs_get_groups(void);
 
-extern struct semaphore ifs_sem;
-
 #endif
diff --git a/drivers/platform/x86/intel/ifs/load.c b/drivers/platform/x86/intel/ifs/load.c
index d056617ddc85..c5c24e6fdc43 100644
--- a/drivers/platform/x86/intel/ifs/load.c
+++ b/drivers/platform/x86/intel/ifs/load.c
@@ -3,27 +3,30 @@
 
 #include <linux/firmware.h>
 #include <asm/cpu.h>
-#include <linux/slab.h>
 #include <asm/microcode_intel.h>
 
 #include "ifs.h"
 
-struct ifs_header {
-	u32 header_ver;
-	u32 blob_revision;
-	u32 date;
-	u32 processor_sig;
-	u32 check_sum;
-	u32 loader_rev;
-	u32 processor_flags;
-	u32 metadata_size;
-	u32 total_size;
-	u32 fusa_info;
-	u64 reserved;
+#define IFS_CHUNK_ALIGNMENT	256
+union meta_data {
+	struct {
+		u32 meta_type;		// metadata type
+		u32 meta_size;		// size of this entire struct including hdrs.
+		u32 test_type;		// IFS test type
+		u32 fusa_info;		// Fusa info
+		u32 total_images;	// Total number of images
+		u32 current_image;	// Current Image #
+		u32 total_chunks;	// Total number of chunks in this image
+		u32 starting_chunk;	// Starting chunk number in this image
+		u32 size_per_chunk;	// size of each chunk
+		u32 chunks_per_stride;	// number of chunks in a stride
+	};
+	u8 padding[IFS_CHUNK_ALIGNMENT];
 };
 
-#define IFS_HEADER_SIZE	(sizeof(struct ifs_header))
-static struct ifs_header *ifs_header_ptr;	/* pointer to the ifs image header */
+#define IFS_HEADER_SIZE	(sizeof(struct microcode_header_intel))
+#define META_TYPE_IFS	1
+static  struct microcode_header_intel *ifs_header_ptr;	/* pointer to the ifs image header */
 static u64 ifs_hash_ptr;			/* Address of ifs metadata (hash) */
 static u64 ifs_test_image_ptr;			/* 256B aligned address of test pattern */
 static DECLARE_COMPLETION(ifs_done);
@@ -44,6 +47,38 @@ static const char * const scan_authentication_status[] = {
 	[2] = "Chunk authentication error. The hash of chunk did not match expected value"
 };
 
+#define MC_HEADER_META_TYPE_END		(0)
+
+struct metadata_header {
+	unsigned int		type;
+	unsigned int		blk_size;
+};
+
+static struct metadata_header *find_meta_data(void *ucode, unsigned int meta_type)
+{
+	struct metadata_header *meta_header;
+	unsigned long data_size, total_meta;
+	unsigned long meta_size = 0;
+
+	data_size = get_datasize(ucode);
+	total_meta = ((struct microcode_intel *)ucode)->hdr.metasize;
+	if (!total_meta)
+		return NULL;
+
+	meta_header = (ucode + MC_HEADER_SIZE + data_size) - total_meta;
+
+	while (meta_header->type != MC_HEADER_META_TYPE_END &&
+	       meta_header->blk_size &&
+	       meta_size < total_meta) {
+		meta_size += meta_header->blk_size;
+		if (meta_header->type == meta_type)
+			return meta_header;
+
+		meta_header = (void *)meta_header + meta_header->blk_size;
+	}
+	return NULL;
+}
+
 /*
  * To copy scan hashes and authenticate test chunks, the initiating cpu must point
  * to the EDX:EAX to the test image in linear address.
@@ -111,6 +146,41 @@ done:
 	complete(&ifs_done);
 }
 
+static int validate_ifs_metadata(struct device *dev)
+{
+	struct ifs_data *ifsd = ifs_get_data(dev);
+	union meta_data *ifs_meta;
+	char test_file[64];
+	int ret = -EINVAL;
+
+	snprintf(test_file, sizeof(test_file), "%02x-%02x-%02x-%02x.scan",
+		 boot_cpu_data.x86, boot_cpu_data.x86_model,
+		 boot_cpu_data.x86_stepping, ifsd->cur_batch);
+
+	ifs_meta = (union meta_data *)find_meta_data(ifs_header_ptr, META_TYPE_IFS);
+	if (!ifs_meta) {
+		dev_err(dev, "IFS Metadata missing in file %s\n", test_file);
+		return ret;
+	}
+
+	ifs_test_image_ptr = (u64)ifs_meta + sizeof(union meta_data);
+
+	/* Scan chunk start must be 256 byte aligned */
+	if (!IS_ALIGNED(ifs_test_image_ptr, IFS_CHUNK_ALIGNMENT)) {
+		dev_err(dev, "Scan pattern is not aligned on %d bytes aligned in %s\n",
+			IFS_CHUNK_ALIGNMENT, test_file);
+		return ret;
+	}
+
+	if (ifs_meta->current_image != ifsd->cur_batch) {
+		dev_warn(dev, "Mismatch between filename %s and batch metadata 0x%02x\n",
+			 test_file, ifs_meta->current_image);
+		return ret;
+	}
+
+	return 0;
+}
+
 /*
  * IFS requires scan chunks authenticated per each socket in the platform.
  * Once the test chunk is authenticated, it is automatically copied to secured memory
@@ -118,131 +188,83 @@ done:
  */
 static int scan_chunks_sanity_check(struct device *dev)
 {
-	int metadata_size, curr_pkg, cpu, ret = -ENOMEM;
 	struct ifs_data *ifsd = ifs_get_data(dev);
-	bool *package_authenticated;
 	struct ifs_work local_work;
-	char *test_ptr;
+	int curr_pkg, cpu, ret;
 
-	package_authenticated = kcalloc(topology_max_packages(), sizeof(bool), GFP_KERNEL);
-	if (!package_authenticated)
+	memset(ifsd->pkg_auth, 0, (topology_max_packages() * sizeof(bool)));
+	ret = validate_ifs_metadata(dev);
+	if (ret)
 		return ret;
 
-	metadata_size = ifs_header_ptr->metadata_size;
-
-	/* Spec says that if the Meta Data Size = 0 then it should be treated as 2000 */
-	if (metadata_size == 0)
-		metadata_size = 2000;
-
-	/* Scan chunk start must be 256 byte aligned */
-	if ((metadata_size + IFS_HEADER_SIZE) % 256) {
-		dev_err(dev, "Scan pattern offset within the binary is not 256 byte aligned\n");
-		return -EINVAL;
-	}
-
-	test_ptr = (char *)ifs_header_ptr + IFS_HEADER_SIZE + metadata_size;
 	ifsd->loading_error = false;
-
-	ifs_test_image_ptr = (u64)test_ptr;
-	ifsd->loaded_version = ifs_header_ptr->blob_revision;
+	ifsd->loaded_version = ifs_header_ptr->rev;
 
 	/* copy the scan hash and authenticate per package */
 	cpus_read_lock();
 	for_each_online_cpu(cpu) {
 		curr_pkg = topology_physical_package_id(cpu);
-		if (package_authenticated[curr_pkg])
+		if (ifsd->pkg_auth[curr_pkg])
 			continue;
 		reinit_completion(&ifs_done);
 		local_work.dev = dev;
 		INIT_WORK(&local_work.w, copy_hashes_authenticate_chunks);
 		schedule_work_on(cpu, &local_work.w);
 		wait_for_completion(&ifs_done);
-		if (ifsd->loading_error)
+		if (ifsd->loading_error) {
+			ret = -EIO;
 			goto out;
-		package_authenticated[curr_pkg] = 1;
+		}
+		ifsd->pkg_auth[curr_pkg] = 1;
 	}
 	ret = 0;
 out:
 	cpus_read_unlock();
-	kfree(package_authenticated);
 
 	return ret;
 }
 
-static int ifs_sanity_check(struct device *dev,
-			    const struct microcode_header_intel *mc_header)
+static int image_sanity_check(struct device *dev, const struct microcode_header_intel *data)
 {
-	unsigned long total_size, data_size;
-	u32 sum, *mc;
-
-	total_size = get_totalsize(mc_header);
-	data_size = get_datasize(mc_header);
+	struct ucode_cpu_info uci;
 
-	if ((data_size + MC_HEADER_SIZE > total_size) || (total_size % sizeof(u32))) {
-		dev_err(dev, "bad ifs data file size.\n");
+	/* Provide a specific error message when loading an older/unsupported image */
+	if (data->hdrver != MC_HEADER_TYPE_IFS) {
+		dev_err(dev, "Header version %d not supported\n", data->hdrver);
 		return -EINVAL;
 	}
 
-	if (mc_header->ldrver != 1 || mc_header->hdrver != 1) {
-		dev_err(dev, "invalid/unknown ifs update format.\n");
+	if (intel_microcode_sanity_check((void *)data, true, MC_HEADER_TYPE_IFS)) {
+		dev_err(dev, "sanity check failed\n");
 		return -EINVAL;
 	}
 
-	mc = (u32 *)mc_header;
-	sum = 0;
-	for (int i = 0; i < total_size / sizeof(u32); i++)
-		sum += mc[i];
+	intel_cpu_collect_info(&uci);
 
-	if (sum) {
-		dev_err(dev, "bad ifs data checksum, aborting.\n");
+	if (!intel_find_matching_signature((void *)data,
+					   uci.cpu_sig.sig,
+					   uci.cpu_sig.pf)) {
+		dev_err(dev, "cpu signature, processor flags not matching\n");
 		return -EINVAL;
 	}
 
 	return 0;
 }
 
-static bool find_ifs_matching_signature(struct device *dev, struct ucode_cpu_info *uci,
-					const struct microcode_header_intel *shdr)
-{
-	unsigned int mc_size;
-
-	mc_size = get_totalsize(shdr);
-
-	if (!mc_size || ifs_sanity_check(dev, shdr) < 0) {
-		dev_err(dev, "ifs sanity check failure\n");
-		return false;
-	}
-
-	if (!intel_cpu_signatures_match(uci->cpu_sig.sig, uci->cpu_sig.pf, shdr->sig, shdr->pf)) {
-		dev_err(dev, "ifs signature, pf not matching\n");
-		return false;
-	}
-
-	return true;
-}
-
-static bool ifs_image_sanity_check(struct device *dev, const struct microcode_header_intel *data)
-{
-	struct ucode_cpu_info uci;
-
-	intel_cpu_collect_info(&uci);
-
-	return find_ifs_matching_signature(dev, &uci, data);
-}
-
 /*
  * Load ifs image. Before loading ifs module, the ifs image must be located
- * in /lib/firmware/intel/ifs and named as {family/model/stepping}.{testname}.
+ * in /lib/firmware/intel/ifs_x/ and named as family-model-stepping-02x.{testname}.
  */
-void ifs_load_firmware(struct device *dev)
+int ifs_load_firmware(struct device *dev)
 {
 	struct ifs_data *ifsd = ifs_get_data(dev);
 	const struct firmware *fw;
-	char scan_path[32];
-	int ret;
+	char scan_path[64];
+	int ret = -EINVAL;
 
-	snprintf(scan_path, sizeof(scan_path), "intel/ifs/%02x-%02x-%02x.scan",
-		 boot_cpu_data.x86, boot_cpu_data.x86_model, boot_cpu_data.x86_stepping);
+	snprintf(scan_path, sizeof(scan_path), "intel/ifs_%d/%02x-%02x-%02x-%02x.scan",
+		 ifsd->test_num, boot_cpu_data.x86, boot_cpu_data.x86_model,
+		 boot_cpu_data.x86_stepping, ifsd->cur_batch);
 
 	ret = request_firmware_direct(&fw, scan_path, dev);
 	if (ret) {
@@ -250,17 +272,21 @@ void ifs_load_firmware(struct device *dev)
 		goto done;
 	}
 
-	if (!ifs_image_sanity_check(dev, (struct microcode_header_intel *)fw->data)) {
-		dev_err(dev, "ifs header sanity check failed\n");
+	ret = image_sanity_check(dev, (struct microcode_header_intel *)fw->data);
+	if (ret)
 		goto release;
-	}
 
-	ifs_header_ptr = (struct ifs_header *)fw->data;
+	ifs_header_ptr = (struct microcode_header_intel *)fw->data;
 	ifs_hash_ptr = (u64)(ifs_header_ptr + 1);
 
 	ret = scan_chunks_sanity_check(dev);
+	if (ret)
+		dev_err(dev, "Load failure for batch: %02x\n", ifsd->cur_batch);
+
 release:
 	release_firmware(fw);
 done:
 	ifsd->loaded = (ret == 0);
+
+	return ret;
 }
diff --git a/drivers/platform/x86/intel/ifs/runtest.c b/drivers/platform/x86/intel/ifs/runtest.c
index b2ca2bb4501f..0bfd8fcdd7e8 100644
--- a/drivers/platform/x86/intel/ifs/runtest.c
+++ b/drivers/platform/x86/intel/ifs/runtest.c
@@ -78,14 +78,16 @@ static void message_not_tested(struct device *dev, int cpu, union ifs_status sta
 
 static void message_fail(struct device *dev, int cpu, union ifs_status status)
 {
+	struct ifs_data *ifsd = ifs_get_data(dev);
+
 	/*
 	 * control_error is set when the microcode runs into a problem
 	 * loading the image from the reserved BIOS memory, or it has
 	 * been corrupted. Reloading the image may fix this issue.
 	 */
 	if (status.control_error) {
-		dev_err(dev, "CPU(s) %*pbl: could not execute from loaded scan image\n",
-			cpumask_pr_args(cpu_smt_mask(cpu)));
+		dev_err(dev, "CPU(s) %*pbl: could not execute from loaded scan image. Batch: %02x version: 0x%x\n",
+			cpumask_pr_args(cpu_smt_mask(cpu)), ifsd->cur_batch, ifsd->loaded_version);
 	}
 
 	/*
@@ -96,8 +98,8 @@ static void message_fail(struct device *dev, int cpu, union ifs_status status)
 	 * the core being tested.
 	 */
 	if (status.signature_error) {
-		dev_err(dev, "CPU(s) %*pbl: test signature incorrect.\n",
-			cpumask_pr_args(cpu_smt_mask(cpu)));
+		dev_err(dev, "CPU(s) %*pbl: test signature incorrect. Batch: %02x version: 0x%x\n",
+			cpumask_pr_args(cpu_smt_mask(cpu)), ifsd->cur_batch, ifsd->loaded_version);
 	}
 }
 
diff --git a/drivers/platform/x86/intel/ifs/sysfs.c b/drivers/platform/x86/intel/ifs/sysfs.c
index 37d8380d6fa8..ee636a76b083 100644
--- a/drivers/platform/x86/intel/ifs/sysfs.c
+++ b/drivers/platform/x86/intel/ifs/sysfs.c
@@ -13,7 +13,7 @@
  * Protects against simultaneous tests on multiple cores, or
  * reloading can file while a test is in progress
  */
-DEFINE_SEMAPHORE(ifs_sem);
+static DEFINE_SEMAPHORE(ifs_sem);
 
 /*
  * The sysfs interface to check additional details of last test
@@ -87,33 +87,42 @@ static ssize_t run_test_store(struct device *dev,
 
 static DEVICE_ATTR_WO(run_test);
 
-/*
- * Reload the IFS image. When user wants to install new IFS image
- */
-static ssize_t reload_store(struct device *dev,
-			    struct device_attribute *attr,
-			    const char *buf, size_t count)
+static ssize_t current_batch_store(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t count)
 {
 	struct ifs_data *ifsd = ifs_get_data(dev);
-	bool res;
-
+	unsigned int cur_batch;
+	int rc;
 
-	if (kstrtobool(buf, &res))
+	rc = kstrtouint(buf, 0, &cur_batch);
+	if (rc < 0 || cur_batch > 0xff)
 		return -EINVAL;
-	if (!res)
-		return count;
 
 	if (down_interruptible(&ifs_sem))
 		return -EINTR;
 
-	ifs_load_firmware(dev);
+	ifsd->cur_batch = cur_batch;
+
+	rc = ifs_load_firmware(dev);
 
 	up(&ifs_sem);
 
-	return ifsd->loaded ? count : -ENODEV;
+	return (rc == 0) ? count : rc;
+}
+
+static ssize_t current_batch_show(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	struct ifs_data *ifsd = ifs_get_data(dev);
+
+	if (!ifsd->loaded)
+		return sysfs_emit(buf, "none\n");
+	else
+		return sysfs_emit(buf, "0x%02x\n", ifsd->cur_batch);
 }
 
-static DEVICE_ATTR_WO(reload);
+static DEVICE_ATTR_RW(current_batch);
 
 /*
  * Display currently loaded IFS image version.
@@ -136,7 +145,7 @@ static struct attribute *plat_ifs_attrs[] = {
 	&dev_attr_details.attr,
 	&dev_attr_status.attr,
 	&dev_attr_run_test.attr,
-	&dev_attr_reload.attr,
+	&dev_attr_current_batch.attr,
 	&dev_attr_image_version.attr,
 	NULL
 };