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test_firmware: add support for firmware_request_platform

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Add support for testing firmware_request_platform through a new
trigger_request_platform trigger.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20200115163554.101315-6-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede 2020-01-15 17:35:49 +01:00 committed by Greg Kroah-Hartman
parent e4c2c0ff00
commit 548193cba2
1 changed files with 55 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

55
lib/test_firmware.c
View file

@ -24,6 +24,7 @@
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/vmalloc.h>
#include <linux/efi_embedded_fw.h>
#define TEST_FIRMWARE_NAME "test-firmware.bin"
#define TEST_FIRMWARE_NUM_REQS 4
@ -507,6 +508,57 @@ static ssize_t trigger_request_store(struct device *dev,
}
static DEVICE_ATTR_WO(trigger_request);
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
static ssize_t trigger_request_platform_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
static const u8 test_data[] = {
0x55, 0xaa, 0x55, 0xaa, 0x01, 0x02, 0x03, 0x04,
0x55, 0xaa, 0x55, 0xaa, 0x05, 0x06, 0x07, 0x08,
0x55, 0xaa, 0x55, 0xaa, 0x10, 0x20, 0x30, 0x40,
0x55, 0xaa, 0x55, 0xaa, 0x50, 0x60, 0x70, 0x80
};
struct efi_embedded_fw efi_embedded_fw;
const struct firmware *firmware = NULL;
char *name;
int rc;
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOSPC;
pr_info("inserting test platform fw '%s'\n", name);
efi_embedded_fw.name = name;
efi_embedded_fw.data = (void *)test_data;
efi_embedded_fw.length = sizeof(test_data);
list_add(&efi_embedded_fw.list, &efi_embedded_fw_list);
pr_info("loading '%s'\n", name);
rc = firmware_request_platform(&firmware, name, dev);
if (rc) {
pr_info("load of '%s' failed: %d\n", name, rc);
goto out;
}
if (firmware->size != sizeof(test_data) ||
memcmp(firmware->data, test_data, sizeof(test_data)) != 0) {
pr_info("firmware contents mismatch for '%s'\n", name);
rc = -EINVAL;
goto out;
}
pr_info("loaded: %zu\n", firmware->size);
rc = count;
out:
release_firmware(firmware);
list_del(&efi_embedded_fw.list);
kfree(name);
return rc;
}
static DEVICE_ATTR_WO(trigger_request_platform);
#endif
static DECLARE_COMPLETION(async_fw_done);
static void trigger_async_request_cb(const struct firmware *fw, void *context)
@ -903,6 +955,9 @@ static struct attribute *test_dev_attrs[] = {
TEST_FW_DEV_ATTR(trigger_request),
TEST_FW_DEV_ATTR(trigger_async_request),
TEST_FW_DEV_ATTR(trigger_custom_fallback),
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
TEST_FW_DEV_ATTR(trigger_request_platform),
#endif
/* These use the config and can use the test_result */
TEST_FW_DEV_ATTR(trigger_batched_requests),