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dt-bindings: firmware: qcom: scm: Separate VMIDs from header to bindings 

The SCM VMIDs represent predefined mappings that come from the
irreplaceable and non-omittable firmware that comes with every
Qualcomm SoC (unless you steal engineering samples from the factory)
and help clarify otherwise totally magic numbers which we are
required to pass to the secure world for some parts of the SoC to
work at all (with modem being the prime example).

On top of that, with changes to the rmtfs binding, secure VMIDs will
become useful to have in device trees for readability. Separate them
out and add to include/dt-bindings.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230109130523.298971-3-konrad.dybcio@linaro.org
This commit is contained in:
Konrad Dybcio 2023-01-09 14:05:23 +01:00 committed by Bjorn Andersson
parent e656cd0bcf
commit 45ca30eb9d
2 changed files with 18 additions and 5 deletions
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16
include/dt-bindings/firmware/qcom,scm.h Normal file
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@ -0,0 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
/*
* Copyright (c) 2010-2015, 2018-2019 The Linux Foundation. All rights reserved.
* Copyright (C) 2015 Linaro Ltd.
*/
#ifndef _DT_BINDINGS_FIRMWARE_QCOM_SCM_H
#define _DT_BINDINGS_FIRMWARE_QCOM_SCM_H
#define QCOM_SCM_VMID_HLOS 0x3
#define QCOM_SCM_VMID_MSS_MSA 0xF
#define QCOM_SCM_VMID_WLAN 0x18
#define QCOM_SCM_VMID_WLAN_CE 0x19
#define QCOM_SCM_VMID_NAV 0x2B
#endif

7
include/linux/qcom_scm.h
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@ -9,6 +9,8 @@
#include <linux/types.h> #include <linux/types.h>
#include <linux/cpumask.h> #include <linux/cpumask.h>
#include <dt-bindings/firmware/qcom,scm.h>
#define QCOM_SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF)) #define QCOM_SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF))
#define QCOM_SCM_CPU_PWR_DOWN_L2_ON 0x0 #define QCOM_SCM_CPU_PWR_DOWN_L2_ON 0x0
#define QCOM_SCM_CPU_PWR_DOWN_L2_OFF 0x1 #define QCOM_SCM_CPU_PWR_DOWN_L2_OFF 0x1
@ -51,11 +53,6 @@ enum qcom_scm_ice_cipher {
QCOM_SCM_ICE_CIPHER_AES_256_CBC = 4, QCOM_SCM_ICE_CIPHER_AES_256_CBC = 4,
}; };
#define QCOM_SCM_VMID_HLOS 0x3
#define QCOM_SCM_VMID_MSS_MSA 0xF
#define QCOM_SCM_VMID_WLAN 0x18
#define QCOM_SCM_VMID_WLAN_CE 0x19
#define QCOM_SCM_VMID_NAV 0x2B
#define QCOM_SCM_PERM_READ 0x4 #define QCOM_SCM_PERM_READ 0x4
#define QCOM_SCM_PERM_WRITE 0x2 #define QCOM_SCM_PERM_WRITE 0x2
#define QCOM_SCM_PERM_EXEC 0x1 #define QCOM_SCM_PERM_EXEC 0x1