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Commit 0213ebc0 authored by Siddharth Gupta's avatar Siddharth Gupta Committed by Elliot Berman
Browse files

firmware: qcom_smc: Add compatibility layer for qseecom 



Adding a compatibility layer so that only header changes are required
for qseecom. This change will exist only for Lahaina bring up.

Change-Id: I5b69dd02491416e4b593c42c85a2ffcf97280020
Signed-off-by: default avatarSiddharth Gupta <sidgup@codeaurora.org>
Signed-off-by: default avatarElliot Berman <eberman@codeaurora.org>
parent d0a14e5c

drivers/firmware/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o 
obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o

obj-$(CONFIG_FW_CFG_SYSFS)	+= qemu_fw_cfg.o

obj-$(CONFIG_QCOM_SCM)		+= _qcom_scm.o

_qcom_scm-y			+= qcom_scm.o qcom_scm-smc.o

_qcom_scm-y			+= qcom_scm.o qcom_scm-smc.o qcom_smc.o

_qcom_scm-$(CONFIG_QTEE_SHM_BRIDGE)	+= qtee_shmbridge.o

obj-$(CONFIG_TI_SCI_PROTOCOL)	+= ti_sci.o

obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o

drivers/firmware/qcom_scm-smc.c

+22 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <asm/cacheflush.h>



#include <linux/qtee_shmbridge.h>

#include <soc/qcom/qseecom_scm.h>



#include "qcom_scm.h"
@@ -1832,6 +1833,27 @@ int __qcom_scm_invoke_callback_response(struct device *dev, phys_addr_t out_buf, 
	return ret;

}



int __qcom_scm_qseecom_do(u32 cmd_id, struct scm_desc *desc, bool retry)

{

	int _ret;

	struct qcom_scm_desc _desc;



	memcpy(&_desc.args, desc->args, sizeof(_desc.args));

	_desc.owner = (cmd_id & 0x3f000000) >> 24;

	_desc.svc = (cmd_id & 0xff00) >> 8;

	_desc.cmd = (cmd_id & 0xff);

	_desc.arginfo = desc->arginfo;



	if (retry)

		_ret = qcom_scm_call(NULL, &_desc);

	else

		_ret = qcom_scm_call_noretry(NULL, &_desc);



	memcpy(desc->ret, &_desc.res, sizeof(_desc.res));



	return _ret;

}



void __qcom_scm_init(void)

{

	__query_convention();

drivers/firmware/qcom_smc.c

0 → 100644
+19 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2019 The Linux Foundation. All rights reserved.

 */

#include <linux/device.h>

#include <linux/arm-smccc.h>

#include <soc/qcom/qseecom_scm.h>



int qcom_scm_qseecom_call(u32 cmd_id, struct scm_desc *desc)

{

	return __qcom_scm_qseecom_do(cmd_id, desc, true);

}

EXPORT_SYMBOL(qcom_scm_qseecom_call);



int qcom_scm_qseecom_call_noretry(u32 cmd_id, struct scm_desc *desc)

{

	return __qcom_scm_qseecom_do(cmd_id, desc, false);

}

EXPORT_SYMBOL(qcom_scm_qseecom_call_noretry);

include/soc/qcom/qseecom_scm.h

0 → 100644
+99 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2010-2019, The Linux Foundation. All rights reserved.

 */



#ifndef __MACH_SCM_H

#define __MACH_SCM_H



#define SCM_SVC_BOOT			0x1

#define SCM_SVC_PIL			0x2

#define SCM_SVC_UTIL			0x3

#define SCM_SVC_TZ			0x4

#define SCM_SVC_IO			0x5

#define SCM_SVC_INFO			0x6

#define SCM_SVC_SSD			0x7

#define SCM_SVC_FUSE			0x8

#define SCM_SVC_PWR			0x9

#define SCM_SVC_MP			0xC

#define SCM_SVC_DCVS			0xD

#define SCM_SVC_ES			0x10

#define SCM_SVC_HDCP			0x11

#define SCM_SVC_MDTP			0x12

#define SCM_SVC_LMH			0x13

#define SCM_SVC_SMMU_PROGRAM		0x15

#define SCM_SVC_QDSS			0x16

#define SCM_SVC_RTIC			0x19

#define SCM_SVC_TZSCHEDULER		0xFC



#define SCM_FUSE_READ			0x7

#define SCM_CMD_HDCP			0x01



/* SCM Features */

#define SCM_SVC_SEC_CAMERA		0xD



#define DEFINE_SCM_BUFFER(__n) \

static char __n[PAGE_SIZE] __aligned(PAGE_SIZE)



#define SCM_BUFFER_SIZE(__buf)	sizeof(__buf)



#define SCM_BUFFER_PHYS(__buf)	virt_to_phys(__buf)



#define SCM_SIP_FNID(s, c) (((((s) & 0xFF) << 8) | ((c) & 0xFF)) | 0x02000000)

#define SCM_QSEEOS_FNID(s, c) (((((s) & 0xFF) << 8) | ((c) & 0xFF)) | \

			      0x32000000)

#define SCM_SVC_ID(s) (((s) & 0xFF00) >> 8)



#define MAX_SCM_ARGS 10

#define MAX_SCM_RETS 3



enum scm_arg_types {

	SCM_VAL,

	SCM_RO,

	SCM_RW,

	SCM_BUFVAL,

};



#define SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\

			(((a) & 0xff) << 4) | \

			(((b) & 0xff) << 6) | \

			(((c) & 0xff) << 8) | \

			(((d) & 0xff) << 10) | \

			(((e) & 0xff) << 12) | \

			(((f) & 0xff) << 14) | \

			(((g) & 0xff) << 16) | \

			(((h) & 0xff) << 18) | \

			(((i) & 0xff) << 20) | \

			(((j) & 0xff) << 22) | \

			(num & 0xffff))



#define SCM_ARGS(...) SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)



struct scm_desc {

	u32 arginfo;

	u64 args[MAX_SCM_ARGS];

	u64 ret[MAX_SCM_RETS];

};



extern int __qcom_scm_qseecom_do(u32 cmd_id, struct scm_desc *desc, bool retry);



#if IS_ENABLED(CONFIG_QCOM_SCM)



int qcom_scm_qseecom_call(u32 cmd_id, struct scm_desc *desc);

int qcom_scm_qseecom_call_noretry(u32 cmd_id, struct scm_desc *desc);



#else



static inline int qcom_scm_qseecom_call(u32 cmd_id, struct scm_desc *desc)

{

	return -ENODEV;

}



static inline int qcom_scm_qseecom_call_noretry(u32 cmd_id,

		struct scm_desc *desc)

{

	return -ENODEV;

}



#endif

#endif