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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 <peng.fan@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Ye Li <ye.li@nxp.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright 2025 NXP
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*/
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#ifndef _SCMI_NXP_PROTOCOLS_H
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#define _SCMI_NXP_PROTOCOLS_H
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#include <asm/types.h>
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#include <linux/bitops.h>
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enum scmi_imx_protocol {
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SCMI_IMX_PROTOCOL_ID_MISC = 0x84,
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};
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#define SCMI_PAYLOAD_LEN 100
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#define SCMI_ARRAY(X, Y) ((SCMI_PAYLOAD_LEN - (X)) / sizeof(Y))
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#define SCMI_IMX_MISC_RESET_REASON 0xA
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struct scmi_imx_misc_reset_reason_in {
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#define MISC_REASON_FLAG_SYSTEM BIT(0)
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u32 flags;
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};
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struct scmi_imx_misc_reset_reason_out {
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s32 status;
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/* Boot reason flags */
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#define MISC_BOOT_FLAG_VLD BIT(31)
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#define MISC_BOOT_FLAG_ORG_VLD BIT(28)
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#define MISC_BOOT_FLAG_ORIGIN GENMASK(27, 24)
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#define MISC_BOOT_FLAG_O_SHIFT 24
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#define MISC_BOOT_FLAG_ERR_VLD BIT(23)
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#define MISC_BOOT_FLAG_ERR_ID GENMASK(22, 8)
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#define MISC_BOOT_FLAG_E_SHIFT 8
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#define MISC_BOOT_FLAG_REASON GENMASK(7, 0)
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u32 bootflags;
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/* Shutdown reason flags */
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#define MISC_SHUTDOWN_FLAG_VLD BIT(31)
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#define MISC_SHUTDOWN_FLAG_EXT_LEN GENMASK(30, 29)
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#define MISC_SHUTDOWN_FLAG_ORG_VLD BIT(28)
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#define MISC_SHUTDOWN_FLAG_ORIGIN GENMASK(27, 24)
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#define MISC_SHUTDOWN_FLAG_O_SHIFT 24
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#define MISC_SHUTDOWN_FLAG_ERR_VLD BIT(23)
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#define MISC_SHUTDOWN_FLAG_ERR_ID GENMASK(22, 8)
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#define MISC_SHUTDOWN_FLAG_E_SHIFT 8
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#define MISC_SHUTDOWN_FLAG_REASON GENMASK(7, 0)
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u32 shutdownflags;
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/* Array of extended info words */
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#define MISC_MAX_EXTINFO SCMI_ARRAY(16, u32)
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u32 extInfo[MISC_MAX_EXTINFO];
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};
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#endif
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