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This protocol allows an agent to start, stop a CPU or set reset vector. It is used to manage auxiliary CPUs in an LM (e.g. additional cores in an AP cluster). Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Alice Guo <alice.guo@nxp.com>
123 lines
3.3 KiB
C
123 lines
3.3 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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#define SCMI_PROTOCOL_ID_IMX_LMM 0x80
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#define SCMI_PROTOCOL_ID_IMX_CPU 0x82
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#define SCMI_PROTOCOL_ID_IMX_MISC 0x84
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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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#define LMM_ID_DISCOVER 0xFFFFFFFFU
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#define LMM_MAX_NAME 16
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enum scmi_imx_lmm_state {
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LMM_STATE_LM_OFF,
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LMM_STATE_LM_ON,
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LMM_STATE_LM_SUSPEND,
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LMM_STATE_LM_POWERED,
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};
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struct scmi_imx_lmm_info {
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u32 lmid;
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enum scmi_imx_lmm_state state;
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u32 errstatus;
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u8 name[LMM_MAX_NAME];
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};
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#if IS_ENABLED(CONFIG_IMX_SM_LMM)
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int scmi_imx_lmm_info(struct udevice *dev, u32 lmid, struct scmi_imx_lmm_info *info);
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int scmi_imx_lmm_power_boot(struct udevice *dev, u32 lmid, bool boot);
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int scmi_imx_lmm_reset_vector_set(struct udevice *dev, u32 lmid, u32 cpuid, u32 flags, u64 vector);
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int scmi_imx_lmm_shutdown(struct udevice *dev, u32 lmid, bool flags);
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#else
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static inline int scmi_imx_lmm_info(struct udevice *dev, u32 lmid, struct scmi_imx_lmm_info *info)
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{
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return -EOPNOTSUPP;
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}
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static inline int scmi_imx_lmm_power_boot(struct udevice *dev, u32 lmid, bool boot)
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{
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return -EOPNOTSUPP;
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}
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static inline int
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scmi_imx_lmm_reset_vector_set(struct udevice *dev, u32 lmid, u32 cpuid, u32 flags, u64 vector)
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{
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return -EOPNOTSUPP;
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}
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static inline int scmi_imx_lmm_shutdown(struct udevice *dev, u32 lmid, bool flags)
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{
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return -EOPNOTSUPP;
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}
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#endif
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#if IS_ENABLED(CONFIG_IMX_SM_CPU)
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int scmi_imx_cpu_started(struct udevice *dev, u32 cpuid, bool *started);
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int scmi_imx_cpu_reset_vector_set(struct udevice *dev, u32 cpuid, u32 flags, u64 vector,
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bool start, bool boot, bool resume);
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int scmi_imx_cpu_start(struct udevice *dev, u32 cpuid, bool start);
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#else
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static inline int scmi_imx_cpu_started(struct udevice *dev, u32 cpuid, bool *started)
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{
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return -EOPNOTSUPP;
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}
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static inline int scmi_imx_cpu_reset_vector_set(struct udevice *dev, u32 cpuid, u32 flags,
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u64 vector, bool start, bool boot, bool resume)
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{
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return -EOPNOTSUPP;
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}
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static inline int scmi_imx_cpu_start(struct udevice *dev, u32 cpuid, bool start)
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{
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return -EOPNOTSUPP;
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}
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#endif
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#endif
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