From 998c6cc450e61152b6d0e800989d2d19358e25c2 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Tue, 23 Sep 2025 10:14:55 +0800 Subject: imx95: Add get_reset_reason() to retrieve the LM/system last booted/shutdown reasons System Manager provides the last booted and shutdown reasons of the logical machines (LM) and system using the SCMI misc protocol (Protocol ID: 0x84, Message ID: 0xA). This path adds get_reset_reason() to query and print these reasons in SPL and U-Boot. Signed-off-by: Peng Fan Signed-off-by: Alice Guo Reviewed-by: Ye Li --- include/scmi_nxp_protocols.h | 55 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 include/scmi_nxp_protocols.h (limited to 'include') diff --git a/include/scmi_nxp_protocols.h b/include/scmi_nxp_protocols.h new file mode 100644 index 00000000000..fe6ecd6a7cf --- /dev/null +++ b/include/scmi_nxp_protocols.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright 2025 NXP + */ + +#ifndef _SCMI_NXP_PROTOCOLS_H +#define _SCMI_NXP_PROTOCOLS_H + +#include +#include + +enum scmi_imx_protocol { + SCMI_IMX_PROTOCOL_ID_MISC = 0x84, +}; + +#define SCMI_PAYLOAD_LEN 100 + +#define SCMI_ARRAY(X, Y) ((SCMI_PAYLOAD_LEN - (X)) / sizeof(Y)) + +#define SCMI_IMX_MISC_RESET_REASON 0xA + +struct scmi_imx_misc_reset_reason_in { +#define MISC_REASON_FLAG_SYSTEM BIT(0) + u32 flags; +}; + +struct scmi_imx_misc_reset_reason_out { + s32 status; + /* Boot reason flags */ +#define MISC_BOOT_FLAG_VLD BIT(31) +#define MISC_BOOT_FLAG_ORG_VLD BIT(28) +#define MISC_BOOT_FLAG_ORIGIN GENMASK(27, 24) +#define MISC_BOOT_FLAG_O_SHIFT 24 +#define MISC_BOOT_FLAG_ERR_VLD BIT(23) +#define MISC_BOOT_FLAG_ERR_ID GENMASK(22, 8) +#define MISC_BOOT_FLAG_E_SHIFT 8 +#define MISC_BOOT_FLAG_REASON GENMASK(7, 0) + u32 bootflags; + /* Shutdown reason flags */ +#define MISC_SHUTDOWN_FLAG_VLD BIT(31) +#define MISC_SHUTDOWN_FLAG_EXT_LEN GENMASK(30, 29) +#define MISC_SHUTDOWN_FLAG_ORG_VLD BIT(28) +#define MISC_SHUTDOWN_FLAG_ORIGIN GENMASK(27, 24) +#define MISC_SHUTDOWN_FLAG_O_SHIFT 24 +#define MISC_SHUTDOWN_FLAG_ERR_VLD BIT(23) +#define MISC_SHUTDOWN_FLAG_ERR_ID GENMASK(22, 8) +#define MISC_SHUTDOWN_FLAG_E_SHIFT 8 +#define MISC_SHUTDOWN_FLAG_REASON GENMASK(7, 0) + u32 shutdownflags; + /* Array of extended info words */ +#define MISC_MAX_EXTINFO SCMI_ARRAY(16, u32) + u32 extInfo[MISC_MAX_EXTINFO]; +}; + +#endif -- cgit v1.3.1