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Diffstat (limited to 'Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu b/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu new file mode 100644 index 000000000000..ae9af984471a --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu @@ -0,0 +1,128 @@ + Intel Stratix10 Remote System Update (RSU) device attributes + +What: /sys/devices/platform/stratix10-rsu.0/current_image +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) the address in flash of currently running image. + +What: /sys/devices/platform/stratix10-rsu.0/fail_image +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) the address in flash of failed image. + +What: /sys/devices/platform/stratix10-rsu.0/state +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) the state of RSU system. + The state field has two parts: major error code in + upper 16 bits and minor error code in lower 16 bits. + + b[15:0] + Currently used only when major error is 0xF006 + (CPU watchdog timeout), in which case the minor + error code is the value reported by CPU to + firmware through the RSU notify command before + the watchdog timeout occurs. + + b[31:16] + 0xF001 bitstream error + 0xF002 hardware access failure + 0xF003 bitstream corruption + 0xF004 internal error + 0xF005 device error + 0xF006 CPU watchdog timeout + 0xF007 internal unknown error + +What: /sys/devices/platform/stratix10-rsu.0/version +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) the version number of RSU firmware. 19.3 or late + version includes information about the firmware which + reported the error. + + pre 19.3: + b[31:0] + 0x0 version number + + 19.3 or late: + b[15:0] + 0x1 version number + b[31:16] + 0x0 no error + 0x0DCF Decision CMF error + 0x0ACF Application CMF error + +What: /sys/devices/platform/stratix10-rsu.0/error_location +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) the error offset inside the image that failed. + +What: /sys/devices/platform/stratix10-rsu.0/error_details +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) error code. + +What: /sys/devices/platform/stratix10-rsu.0/retry_counter +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (RO) the current image's retry counter, which is used by + user to know how many times the images is still allowed + to reload itself before giving up and starting RSU + fail-over flow. + +What: /sys/devices/platform/stratix10-rsu.0/reboot_image +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (WO) the address in flash of image to be loaded on next + reboot command. + +What: /sys/devices/platform/stratix10-rsu.0/notify +Date: August 2019 +KernelVersion: 5.4 +Contact: Richard Gong <richard.gong@linux.intel.com> +Description: + (WO) client to notify firmware with different actions. + + b[15:0] + inform firmware the current software execution + stage. + 0 the first stage bootloader didn't run or + didn't reach the point of launching second + stage bootloader. + 1 failed in second bootloader or didn't get + to the point of launching the operating + system. + 2 both first and second stage bootloader ran + and the operating system launch was + attempted. + + b[16] + 1 firmware to reset current image retry + counter. + 0 no action. + + b[17] + 1 firmware to clear RSU log + 0 no action. + + b[18] + this is negative logic + 1 no action + 0 firmware record the notify code defined + in b[15:0]. |