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Commit eee0ffd5 authored by Channagoud Kadabi's avatar Channagoud Kadabi
Browse files

drivers: soc: add snapshot of scm driver 



This is a snapshot of scm driver as of msm-4.4 commit <9d822a9489cceee5>
("Merge "ASoC: msm: set pointers to NULL after kfree")

CRs-Fixed: 1053664
Change-Id: I601d95e64756c6bb82a6799d259431af76edf528
Signed-off-by: default avatarChannagoud Kadabi <ckadabi@codeaurora.org>
parent 660ed0e2

drivers/soc/qcom/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -51,6 +51,10 @@ config QCOM_SMD_RPM 
	  Say M here if you want to include support for the Qualcomm RPM as a

	  module. This will build a module called "qcom-smd-rpm".



config QCOM_SCM

	bool "Secure Channel Manager (SCM) support"

	default n



config QCOM_SMEM_STATE

	bool

drivers/soc/qcom/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -7,3 +7,5 @@ obj-$(CONFIG_QCOM_SMEM_STATE) += smem_state.o 
obj-$(CONFIG_QCOM_SMP2P)	+= smp2p.o

obj-$(CONFIG_QCOM_SMSM)	+= smsm.o

obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o

CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)

obj-$(CONFIG_QCOM_SCM)  +=      scm.o scm-boot.o

drivers/soc/qcom/scm-boot.c

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+111 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2010, 2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#include <linux/module.h>

#include <linux/slab.h>

#include <soc/qcom/scm.h>

#include <soc/qcom/scm-boot.h>



/*

 * Set the cold/warm boot address for one of the CPU cores.

 */

int scm_set_boot_addr(phys_addr_t addr, unsigned int flags)

{

	struct {

		u32 flags;

		u32 addr;

	} cmd;



	cmd.addr = addr;

	cmd.flags = flags;

	return scm_call(SCM_SVC_BOOT, SCM_BOOT_ADDR,

			&cmd, sizeof(cmd), NULL, 0);

}

EXPORT_SYMBOL(scm_set_boot_addr);



/**

 *	scm_set_boot_addr_mc - Set entry physical address for cpus

 *	@addr:	32bit physical address

 *	@aff0:	Collective bitmask of the affinity-level-0 of the mpidr

 *		1<<aff0_CPU0| 1<<aff0_CPU1....... | 1<<aff0_CPU32

 *		Supports maximum 32 cpus under any affinity level.

 *	@aff1:	Collective bitmask of the affinity-level-1 of the mpidr

 *	@aff2:	Collective bitmask of the affinity-level-2 of the mpidr

 *	@flags:	Flag to differentiate between coldboot vs warmboot

 */

int scm_set_boot_addr_mc(phys_addr_t addr, u32 aff0,

		u32 aff1, u32 aff2, u32 flags)

{

	struct {

		u32 addr;

		u32 aff0;

		u32 aff1;

		u32 aff2;

		u32 reserved;

		u32 flags;

	} cmd;

	struct scm_desc desc = {0};



	if (!is_scm_armv8()) {

		cmd.addr = addr;

		cmd.aff0 = aff0;

		cmd.aff1 = aff1;

		cmd.aff2 = aff2;

		/*

		 * Reserved for future chips with affinity level 3 effectively

		 * 1 << 0

		 */

		cmd.reserved = ~0U;

		cmd.flags = flags | SCM_FLAG_HLOS;

		return scm_call(SCM_SVC_BOOT, SCM_BOOT_ADDR_MC,

				&cmd, sizeof(cmd), NULL, 0);

	}



	flags = flags | SCM_FLAG_HLOS;

	desc.args[0] = addr;

	desc.args[1] = aff0;

	desc.args[2] = aff1;

	desc.args[3] = aff2;

	desc.args[4] = ~0ULL;

	desc.args[5] = flags;

	desc.arginfo = SCM_ARGS(6);



	return scm_call2(SCM_SIP_FNID(SCM_SVC_BOOT, SCM_BOOT_ADDR_MC), &desc);

}

EXPORT_SYMBOL(scm_set_boot_addr_mc);



/**

 *	scm_set_warm_boot_addr_mc_for_all -

 *	Set entry physical address for __all__ possible cpus

 *	This API passes all_set mask to secure-os and relies

 *	on secure-os to appropriately

 *	set the boot-address on the current system.

 *	@addr:	32bit physical address

 */



int scm_set_warm_boot_addr_mc_for_all(phys_addr_t addr)

{

	return scm_set_boot_addr_mc(addr, ~0U, ~0U, ~0U,

			SCM_FLAG_WARMBOOT_MC);

}

EXPORT_SYMBOL(scm_set_warm_boot_addr_mc_for_all);



/**

 *	scm_is_mc_boot_available -

 *	Checks if TZ supports the boot API for multi-cluster configuration

 *	Returns true if available and false otherwise

 */

int scm_is_mc_boot_available(void)

{

	return scm_is_call_available(SCM_SVC_BOOT, SCM_BOOT_ADDR_MC);

}

EXPORT_SYMBOL(scm_is_mc_boot_available);

drivers/soc/qcom/scm.c

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+1235 −0

File added.

Preview size limit exceeded, changes collapsed.

include/soc/qcom/scm-boot.h

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+65 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2010, 2012, 2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#ifndef __MACH_SCM_BOOT_H

#define __MACH_SCM_BOOT_H



#define SCM_BOOT_ADDR			0x1

#define SCM_FLAG_COLDBOOT_CPU1		0x01

#define SCM_FLAG_COLDBOOT_CPU2		0x08

#define SCM_FLAG_COLDBOOT_CPU3		0x20

#define SCM_FLAG_WARMBOOT_CPU1		0x02

#define SCM_FLAG_WARMBOOT_CPU0		0x04

#define SCM_FLAG_WARMBOOT_CPU2		0x10

#define SCM_FLAG_WARMBOOT_CPU3		0x40



/* Multicluster Variants */

#define SCM_BOOT_ADDR_MC		0x11

#define SCM_FLAG_COLDBOOT_MC		0x02

#define SCM_FLAG_WARMBOOT_MC		0x04



#ifdef CONFIG_ARM64

#define SCM_FLAG_HLOS			0x01

#else

#define SCM_FLAG_HLOS			0x0

#endif



#ifdef CONFIG_QCOM_SCM

int scm_set_boot_addr(phys_addr_t addr, unsigned int flags);

int scm_set_boot_addr_mc(phys_addr_t addr, u32 aff0,

		u32 aff1, u32 aff2, u32 flags);

int scm_set_warm_boot_addr_mc_for_all(phys_addr_t addr);

int scm_is_mc_boot_available(void);

#else

static inline int scm_set_boot_addr(phys_addr_t addr, unsigned int flags)

{

	WARN_ONCE(1, "CONFIG_QCOM_SCM disabled, SCM call will fail silently\n");

	return 0;

}

static inline int scm_set_boot_addr_mc(phys_addr_t addr, u32 aff0,

		u32 aff1, u32 aff2, u32 flags)

{

	WARN_ONCE(1, "CONFIG_QCOM_SCM disabled, SCM call will fail silently\n");

	return 0;

}

static inline int scm_set_warm_boot_addr_mc_for_all(phys_addr_t addr)

{

	WARN_ONCE(1, "CONFIG_QCOM_SCM disabled, SCM call will fail silently\n");

	return 0;

}

static inline int scm_is_mc_boot_available(void)

{

	WARN_ONCE(1, "CONFIG_QCOM_SCM disabled, SCM call will fail silently\n");

	return 0;

}

#endif



#endif