W: http://www.arm.linux.org.uk/
S: Maintained
+ARM/QUALCOMM SUPPORT
+M: Kumar Gala <galak@codeaurora.org>
+M: David Brown <davidb@codeaurora.org>
+L: linux-arm-msm@vger.kernel.org
+S: Maintained
+F: arch/arm/mach-qcom/
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom.git
+
ARM/RADISYS ENP2611 MACHINE SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
help
Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
-config ARCH_MSM_NODT
- bool "Qualcomm MSM"
- select ARCH_MSM
+config ARCH_MSM
+ bool "Qualcomm MSM (non-multiplatform)"
select ARCH_REQUIRE_GPIOLIB
select COMMON_CLK
select GENERIC_CLOCKEVENTS
source "arch/arm/mach-mmp/Kconfig"
+source "arch/arm/mach-qcom/Kconfig"
+
source "arch/arm/mach-realview/Kconfig"
source "arch/arm/mach-rockchip/Kconfig"
config DEBUG_MSM_UART
bool
- depends on ARCH_MSM
+ depends on ARCH_MSM || ARCH_QCOM
config DEBUG_LL_INCLUDE
string
machine-$(CONFIG_ARCH_ORION5X) += orion5x
machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
machine-$(CONFIG_ARCH_PXA) += pxa
+machine-$(CONFIG_ARCH_QCOM) += qcom
machine-$(CONFIG_ARCH_REALVIEW) += realview
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
machine-$(CONFIG_ARCH_RPC) += rpc
kirkwood-ts219-6282.dtb
dtb-$(CONFIG_ARCH_MARCO) += marco-evb.dtb
dtb-$(CONFIG_ARCH_MOXART) += moxart-uc7112lx.dtb
-dtb-$(CONFIG_ARCH_MSM) += qcom-msm8660-surf.dtb \
- qcom-msm8960-cdp.dtb \
- qcom-apq8074-dragonboard.dtb
dtb-$(CONFIG_ARCH_MVEBU) += armada-370-db.dtb \
armada-370-mirabox.dtb \
armada-370-netgear-rn102.dtb \
dra7-evm.dtb
dtb-$(CONFIG_ARCH_ORION5X) += orion5x-lacie-ethernet-disk-mini-v2.dtb
dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb
+dtb-$(CONFIG_ARCH_QCOM) += qcom-msm8660-surf.dtb \
+ qcom-msm8960-cdp.dtb \
+ qcom-apq8074-dragonboard.dtb
dtb-$(CONFIG_ARCH_U8500) += ste-snowball.dtb \
ste-hrefprev60-stuib.dtb \
ste-hrefprev60-tvk.dtb \
-config ARCH_MSM
- bool
-
-config ARCH_MSM_DT
- bool "Qualcomm MSM DT Support" if ARCH_MULTI_V7
- select ARCH_MSM
- select ARCH_REQUIRE_GPIOLIB
- select CLKSRC_OF
- select GENERIC_CLOCKEVENTS
- help
- Support for Qualcomm's devicetree based MSM systems.
-
if ARCH_MSM
-menu "Qualcomm MSM SoC Selection"
- depends on ARCH_MSM_DT
-
-config ARCH_MSM8X60
- bool "Enable support for MSM8X60"
- select ARM_GIC
- select CPU_V7
- select HAVE_SMP
- select MSM_SCM if SMP
- select CLKSRC_QCOM
-
-config ARCH_MSM8960
- bool "Enable support for MSM8960"
- select ARM_GIC
- select CPU_V7
- select HAVE_SMP
- select MSM_SCM if SMP
- select CLKSRC_QCOM
-
-config ARCH_MSM8974
- bool "Enable support for MSM8974"
- select ARM_GIC
- select CPU_V7
- select HAVE_ARM_ARCH_TIMER
- select HAVE_SMP
- select MSM_SCM if SMP
-
-endmenu
-
choice
prompt "Qualcomm MSM SoC Type"
default ARCH_MSM7X00A
- depends on ARCH_MSM_NODT
+ depends on ARCH_MSM
config ARCH_MSM7X00A
bool "MSM7x00A / MSM7x01A"
bool
menu "Qualcomm MSM Board Type"
- depends on ARCH_MSM_NODT
+ depends on ARCH_MSM
config MACH_HALIBUT
depends on ARCH_MSM
obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o
obj-$(CONFIG_MSM_SMD) += last_radio_log.o
-obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.o
-
-CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
-
-obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o devices-msm7x00.o
obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o board-trout-panel.o devices-msm7x00.o
obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o devices-msm7x00.o
obj-$(CONFIG_ARCH_MSM7X30) += board-msm7x30.o devices-msm7x30.o
obj-$(CONFIG_ARCH_QSD8X50) += board-qsd8x50.o devices-qsd8x50.o
-obj-$(CONFIG_ARCH_MSM_DT) += board-dt.o
obj-$(CONFIG_MSM_GPIOMUX) += gpiomux.o
obj-$(CONFIG_ARCH_QSD8X50) += gpiomux-8x50.o
+++ /dev/null
-/* Copyright (c) 2010-2012,2013 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/init.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include "common.h"
-
-static const char * const msm_dt_match[] __initconst = {
- "qcom,msm8660-fluid",
- "qcom,msm8660-surf",
- "qcom,msm8960-cdp",
- NULL
-};
-
-static const char * const apq8074_dt_match[] __initconst = {
- "qcom,apq8074-dragonboard",
- NULL
-};
-
-DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
- .smp = smp_ops(msm_smp_ops),
- .dt_compat = msm_dt_match,
-MACHINE_END
-
-DT_MACHINE_START(APQ_DT, "Qualcomm MSM (Flattened Device Tree)")
- .dt_compat = apq8074_dt_match,
-MACHINE_END
+++ /dev/null
-/*
- * Copyright (C) 2002 ARM Ltd.
- * All Rights Reserved
- * Copyright (c) 2010, Code Aurora Forum. 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 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/smp.h>
-#include <linux/io.h>
-
-#include <asm/cputype.h>
-#include <asm/smp_plat.h>
-
-#include "scm-boot.h"
-#include "common.h"
-
-#define VDD_SC1_ARRAY_CLAMP_GFS_CTL 0x15A0
-#define SCSS_CPU1CORE_RESET 0xD80
-#define SCSS_DBG_STATUS_CORE_PWRDUP 0xE64
-
-extern void secondary_startup(void);
-
-static DEFINE_SPINLOCK(boot_lock);
-
-#ifdef CONFIG_HOTPLUG_CPU
-static void __ref msm_cpu_die(unsigned int cpu)
-{
- wfi();
-}
-#endif
-
-static inline int get_core_count(void)
-{
- /* 1 + the PART[1:0] field of MIDR */
- return ((read_cpuid_id() >> 4) & 3) + 1;
-}
-
-static void msm_secondary_init(unsigned int cpu)
-{
- /*
- * Synchronise with the boot thread.
- */
- spin_lock(&boot_lock);
- spin_unlock(&boot_lock);
-}
-
-static void prepare_cold_cpu(unsigned int cpu)
-{
- int ret;
- ret = scm_set_boot_addr(virt_to_phys(secondary_startup),
- SCM_FLAG_COLDBOOT_CPU1);
- if (ret == 0) {
- void __iomem *sc1_base_ptr;
- sc1_base_ptr = ioremap_nocache(0x00902000, SZ_4K*2);
- if (sc1_base_ptr) {
- writel(0, sc1_base_ptr + VDD_SC1_ARRAY_CLAMP_GFS_CTL);
- writel(0, sc1_base_ptr + SCSS_CPU1CORE_RESET);
- writel(3, sc1_base_ptr + SCSS_DBG_STATUS_CORE_PWRDUP);
- iounmap(sc1_base_ptr);
- }
- } else
- printk(KERN_DEBUG "Failed to set secondary core boot "
- "address\n");
-}
-
-static int msm_boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
- static int cold_boot_done;
-
- /* Only need to bring cpu out of reset this way once */
- if (cold_boot_done == false) {
- prepare_cold_cpu(cpu);
- cold_boot_done = true;
- }
-
- /*
- * set synchronisation state between this boot processor
- * and the secondary one
- */
- spin_lock(&boot_lock);
-
- /*
- * Send the secondary CPU a soft interrupt, thereby causing
- * the boot monitor to read the system wide flags register,
- * and branch to the address found there.
- */
- arch_send_wakeup_ipi_mask(cpumask_of(cpu));
-
- /*
- * now the secondary core is starting up let it run its
- * calibrations, then wait for it to finish
- */
- spin_unlock(&boot_lock);
-
- return 0;
-}
-
-/*
- * Initialise the CPU possible map early - this describes the CPUs
- * which may be present or become present in the system. The msm8x60
- * does not support the ARM SCU, so just set the possible cpu mask to
- * NR_CPUS.
- */
-static void __init msm_smp_init_cpus(void)
-{
- unsigned int i, ncores = get_core_count();
-
- if (ncores > nr_cpu_ids) {
- pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
- ncores, nr_cpu_ids);
- ncores = nr_cpu_ids;
- }
-
- for (i = 0; i < ncores; i++)
- set_cpu_possible(i, true);
-}
-
-static void __init msm_smp_prepare_cpus(unsigned int max_cpus)
-{
-}
-
-struct smp_operations msm_smp_ops __initdata = {
- .smp_init_cpus = msm_smp_init_cpus,
- .smp_prepare_cpus = msm_smp_prepare_cpus,
- .smp_secondary_init = msm_secondary_init,
- .smp_boot_secondary = msm_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
- .cpu_die = msm_cpu_die,
-#endif
-};
+++ /dev/null
-/* Copyright (c) 2010, Code Aurora Forum. 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-
-#include "scm.h"
-#include "scm-boot.h"
-
-/*
- * Set the cold/warm boot address for one of the CPU cores.
- */
-int scm_set_boot_addr(phys_addr_t addr, int flags)
-{
- struct {
- unsigned int flags;
- phys_addr_t 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);
+++ /dev/null
-/* Copyright (c) 2010, Code Aurora Forum. 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 0x1
-#define SCM_FLAG_WARMBOOT_CPU1 0x2
-#define SCM_FLAG_WARMBOOT_CPU0 0x4
-
-int scm_set_boot_addr(phys_addr_t addr, int flags);
-
-#endif
+++ /dev/null
-/* Copyright (c) 2010, Code Aurora Forum. 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-
-#include <asm/cacheflush.h>
-
-#include "scm.h"
-
-/* Cache line size for msm8x60 */
-#define CACHELINESIZE 32
-
-#define SCM_ENOMEM -5
-#define SCM_EOPNOTSUPP -4
-#define SCM_EINVAL_ADDR -3
-#define SCM_EINVAL_ARG -2
-#define SCM_ERROR -1
-#define SCM_INTERRUPTED 1
-
-static DEFINE_MUTEX(scm_lock);
-
-/**
- * struct scm_command - one SCM command buffer
- * @len: total available memory for command and response
- * @buf_offset: start of command buffer
- * @resp_hdr_offset: start of response buffer
- * @id: command to be executed
- * @buf: buffer returned from scm_get_command_buffer()
- *
- * An SCM command is laid out in memory as follows:
- *
- * ------------------- <--- struct scm_command
- * | command header |
- * ------------------- <--- scm_get_command_buffer()
- * | command buffer |
- * ------------------- <--- struct scm_response and
- * | response header | scm_command_to_response()
- * ------------------- <--- scm_get_response_buffer()
- * | response buffer |
- * -------------------
- *
- * There can be arbitrary padding between the headers and buffers so
- * you should always use the appropriate scm_get_*_buffer() routines
- * to access the buffers in a safe manner.
- */
-struct scm_command {
- u32 len;
- u32 buf_offset;
- u32 resp_hdr_offset;
- u32 id;
- u32 buf[0];
-};
-
-/**
- * struct scm_response - one SCM response buffer
- * @len: total available memory for response
- * @buf_offset: start of response data relative to start of scm_response
- * @is_complete: indicates if the command has finished processing
- */
-struct scm_response {
- u32 len;
- u32 buf_offset;
- u32 is_complete;
-};
-
-/**
- * alloc_scm_command() - Allocate an SCM command
- * @cmd_size: size of the command buffer
- * @resp_size: size of the response buffer
- *
- * Allocate an SCM command, including enough room for the command
- * and response headers as well as the command and response buffers.
- *
- * Returns a valid &scm_command on success or %NULL if the allocation fails.
- */
-static struct scm_command *alloc_scm_command(size_t cmd_size, size_t resp_size)
-{
- struct scm_command *cmd;
- size_t len = sizeof(*cmd) + sizeof(struct scm_response) + cmd_size +
- resp_size;
-
- cmd = kzalloc(PAGE_ALIGN(len), GFP_KERNEL);
- if (cmd) {
- cmd->len = len;
- cmd->buf_offset = offsetof(struct scm_command, buf);
- cmd->resp_hdr_offset = cmd->buf_offset + cmd_size;
- }
- return cmd;
-}
-
-/**
- * free_scm_command() - Free an SCM command
- * @cmd: command to free
- *
- * Free an SCM command.
- */
-static inline void free_scm_command(struct scm_command *cmd)
-{
- kfree(cmd);
-}
-
-/**
- * scm_command_to_response() - Get a pointer to a scm_response
- * @cmd: command
- *
- * Returns a pointer to a response for a command.
- */
-static inline struct scm_response *scm_command_to_response(
- const struct scm_command *cmd)
-{
- return (void *)cmd + cmd->resp_hdr_offset;
-}
-
-/**
- * scm_get_command_buffer() - Get a pointer to a command buffer
- * @cmd: command
- *
- * Returns a pointer to the command buffer of a command.
- */
-static inline void *scm_get_command_buffer(const struct scm_command *cmd)
-{
- return (void *)cmd->buf;
-}
-
-/**
- * scm_get_response_buffer() - Get a pointer to a response buffer
- * @rsp: response
- *
- * Returns a pointer to a response buffer of a response.
- */
-static inline void *scm_get_response_buffer(const struct scm_response *rsp)
-{
- return (void *)rsp + rsp->buf_offset;
-}
-
-static int scm_remap_error(int err)
-{
- switch (err) {
- case SCM_ERROR:
- return -EIO;
- case SCM_EINVAL_ADDR:
- case SCM_EINVAL_ARG:
- return -EINVAL;
- case SCM_EOPNOTSUPP:
- return -EOPNOTSUPP;
- case SCM_ENOMEM:
- return -ENOMEM;
- }
- return -EINVAL;
-}
-
-static u32 smc(u32 cmd_addr)
-{
- int context_id;
- register u32 r0 asm("r0") = 1;
- register u32 r1 asm("r1") = (u32)&context_id;
- register u32 r2 asm("r2") = cmd_addr;
- do {
- asm volatile(
- __asmeq("%0", "r0")
- __asmeq("%1", "r0")
- __asmeq("%2", "r1")
- __asmeq("%3", "r2")
-#ifdef REQUIRES_SEC
- ".arch_extension sec\n"
-#endif
- "smc #0 @ switch to secure world\n"
- : "=r" (r0)
- : "r" (r0), "r" (r1), "r" (r2)
- : "r3");
- } while (r0 == SCM_INTERRUPTED);
-
- return r0;
-}
-
-static int __scm_call(const struct scm_command *cmd)
-{
- int ret;
- u32 cmd_addr = virt_to_phys(cmd);
-
- /*
- * Flush the entire cache here so callers don't have to remember
- * to flush the cache when passing physical addresses to the secure
- * side in the buffer.
- */
- flush_cache_all();
- ret = smc(cmd_addr);
- if (ret < 0)
- ret = scm_remap_error(ret);
-
- return ret;
-}
-
-/**
- * scm_call() - Send an SCM command
- * @svc_id: service identifier
- * @cmd_id: command identifier
- * @cmd_buf: command buffer
- * @cmd_len: length of the command buffer
- * @resp_buf: response buffer
- * @resp_len: length of the response buffer
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- */
-int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
- void *resp_buf, size_t resp_len)
-{
- int ret;
- struct scm_command *cmd;
- struct scm_response *rsp;
-
- cmd = alloc_scm_command(cmd_len, resp_len);
- if (!cmd)
- return -ENOMEM;
-
- cmd->id = (svc_id << 10) | cmd_id;
- if (cmd_buf)
- memcpy(scm_get_command_buffer(cmd), cmd_buf, cmd_len);
-
- mutex_lock(&scm_lock);
- ret = __scm_call(cmd);
- mutex_unlock(&scm_lock);
- if (ret)
- goto out;
-
- rsp = scm_command_to_response(cmd);
- do {
- u32 start = (u32)rsp;
- u32 end = (u32)scm_get_response_buffer(rsp) + resp_len;
- start &= ~(CACHELINESIZE - 1);
- while (start < end) {
- asm ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start)
- : "memory");
- start += CACHELINESIZE;
- }
- } while (!rsp->is_complete);
-
- if (resp_buf)
- memcpy(resp_buf, scm_get_response_buffer(rsp), resp_len);
-out:
- free_scm_command(cmd);
- return ret;
-}
-EXPORT_SYMBOL(scm_call);
-
-u32 scm_get_version(void)
-{
- int context_id;
- static u32 version = -1;
- register u32 r0 asm("r0");
- register u32 r1 asm("r1");
-
- if (version != -1)
- return version;
-
- mutex_lock(&scm_lock);
-
- r0 = 0x1 << 8;
- r1 = (u32)&context_id;
- do {
- asm volatile(
- __asmeq("%0", "r0")
- __asmeq("%1", "r1")
- __asmeq("%2", "r0")
- __asmeq("%3", "r1")
-#ifdef REQUIRES_SEC
- ".arch_extension sec\n"
-#endif
- "smc #0 @ switch to secure world\n"
- : "=r" (r0), "=r" (r1)
- : "r" (r0), "r" (r1)
- : "r2", "r3");
- } while (r0 == SCM_INTERRUPTED);
-
- version = r1;
- mutex_unlock(&scm_lock);
-
- return version;
-}
-EXPORT_SYMBOL(scm_get_version);
+++ /dev/null
-/* Copyright (c) 2010, Code Aurora Forum. 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_H
-#define __MACH_SCM_H
-
-#define SCM_SVC_BOOT 0x1
-#define SCM_SVC_PIL 0x2
-
-extern int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
- void *resp_buf, size_t resp_len);
-
-#define SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF))
-
-extern u32 scm_get_version(void);
-
-#endif
--- /dev/null
+config ARCH_QCOM
+ bool "Qualcomm Support" if ARCH_MULTI_V7
+ select ARCH_REQUIRE_GPIOLIB
+ select ARM_GIC
+ select CLKSRC_OF
+ select GENERIC_CLOCKEVENTS
+ select HAVE_SMP
+ select QCOM_SCM if SMP
+ help
+ Support for Qualcomm's devicetree based systems.
+
+if ARCH_QCOM
+
+menu "Qualcomm SoC Selection"
+
+config ARCH_MSM8X60
+ bool "Enable support for MSM8X60"
+ select CLKSRC_QCOM
+
+config ARCH_MSM8960
+ bool "Enable support for MSM8960"
+ select CLKSRC_QCOM
+
+config ARCH_MSM8974
+ bool "Enable support for MSM8974"
+ select HAVE_ARM_ARCH_TIMER
+
+endmenu
+
+config QCOM_SCM
+ bool
+
+endif
--- /dev/null
+obj-y := board.o
+obj-$(CONFIG_SMP) += platsmp.o
+obj-$(CONFIG_QCOM_SCM) += scm.o scm-boot.o
+
+CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
--- /dev/null
+/* 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/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+extern struct smp_operations msm_smp_ops;
+
+static const char * const qcom_dt_match[] __initconst = {
+ "qcom,msm8660-surf",
+ "qcom,msm8960-cdp",
+ NULL
+};
+
+static const char * const apq8074_dt_match[] __initconst = {
+ "qcom,apq8074-dragonboard",
+ NULL
+};
+
+DT_MACHINE_START(QCOM_DT, "Qualcomm (Flattened Device Tree)")
+ .smp = smp_ops(msm_smp_ops),
+ .dt_compat = qcom_dt_match,
+MACHINE_END
+
+DT_MACHINE_START(APQ_DT, "Qualcomm (Flattened Device Tree)")
+ .dt_compat = apq8074_dt_match,
+MACHINE_END
--- /dev/null
+/*
+ * Copyright (C) 2002 ARM Ltd.
+ * All Rights Reserved
+ * Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 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 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+
+#include <asm/cputype.h>
+#include <asm/smp_plat.h>
+
+#include "scm-boot.h"
+
+#define VDD_SC1_ARRAY_CLAMP_GFS_CTL 0x15A0
+#define SCSS_CPU1CORE_RESET 0xD80
+#define SCSS_DBG_STATUS_CORE_PWRDUP 0xE64
+
+extern void secondary_startup(void);
+
+static DEFINE_SPINLOCK(boot_lock);
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void __ref msm_cpu_die(unsigned int cpu)
+{
+ wfi();
+}
+#endif
+
+static inline int get_core_count(void)
+{
+ /* 1 + the PART[1:0] field of MIDR */
+ return ((read_cpuid_id() >> 4) & 3) + 1;
+}
+
+static void msm_secondary_init(unsigned int cpu)
+{
+ /*
+ * Synchronise with the boot thread.
+ */
+ spin_lock(&boot_lock);
+ spin_unlock(&boot_lock);
+}
+
+static void prepare_cold_cpu(unsigned int cpu)
+{
+ int ret;
+ ret = scm_set_boot_addr(virt_to_phys(secondary_startup),
+ SCM_FLAG_COLDBOOT_CPU1);
+ if (ret == 0) {
+ void __iomem *sc1_base_ptr;
+ sc1_base_ptr = ioremap_nocache(0x00902000, SZ_4K*2);
+ if (sc1_base_ptr) {
+ writel(0, sc1_base_ptr + VDD_SC1_ARRAY_CLAMP_GFS_CTL);
+ writel(0, sc1_base_ptr + SCSS_CPU1CORE_RESET);
+ writel(3, sc1_base_ptr + SCSS_DBG_STATUS_CORE_PWRDUP);
+ iounmap(sc1_base_ptr);
+ }
+ } else
+ printk(KERN_DEBUG "Failed to set secondary core boot "
+ "address\n");
+}
+
+static int msm_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ static int cold_boot_done;
+
+ /* Only need to bring cpu out of reset this way once */
+ if (cold_boot_done == false) {
+ prepare_cold_cpu(cpu);
+ cold_boot_done = true;
+ }
+
+ /*
+ * set synchronisation state between this boot processor
+ * and the secondary one
+ */
+ spin_lock(&boot_lock);
+
+ /*
+ * Send the secondary CPU a soft interrupt, thereby causing
+ * the boot monitor to read the system wide flags register,
+ * and branch to the address found there.
+ */
+ arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+
+ /*
+ * now the secondary core is starting up let it run its
+ * calibrations, then wait for it to finish
+ */
+ spin_unlock(&boot_lock);
+
+ return 0;
+}
+
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system. The msm8x60
+ * does not support the ARM SCU, so just set the possible cpu mask to
+ * NR_CPUS.
+ */
+static void __init msm_smp_init_cpus(void)
+{
+ unsigned int i, ncores = get_core_count();
+
+ if (ncores > nr_cpu_ids) {
+ pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
+ ncores, nr_cpu_ids);
+ ncores = nr_cpu_ids;
+ }
+
+ for (i = 0; i < ncores; i++)
+ set_cpu_possible(i, true);
+}
+
+static void __init msm_smp_prepare_cpus(unsigned int max_cpus)
+{
+}
+
+struct smp_operations msm_smp_ops __initdata = {
+ .smp_init_cpus = msm_smp_init_cpus,
+ .smp_prepare_cpus = msm_smp_prepare_cpus,
+ .smp_secondary_init = msm_secondary_init,
+ .smp_boot_secondary = msm_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = msm_cpu_die,
+#endif
+};
--- /dev/null
+/* Copyright (c) 2010, Code Aurora Forum. 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include "scm.h"
+#include "scm-boot.h"
+
+/*
+ * Set the cold/warm boot address for one of the CPU cores.
+ */
+int scm_set_boot_addr(phys_addr_t addr, int flags)
+{
+ struct {
+ unsigned int flags;
+ phys_addr_t 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);
--- /dev/null
+/* Copyright (c) 2010, Code Aurora Forum. 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 0x1
+#define SCM_FLAG_WARMBOOT_CPU1 0x2
+#define SCM_FLAG_WARMBOOT_CPU0 0x4
+
+int scm_set_boot_addr(phys_addr_t addr, int flags);
+
+#endif
--- /dev/null
+/* Copyright (c) 2010, Code Aurora Forum. 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+
+#include <asm/cacheflush.h>
+
+#include "scm.h"
+
+/* Cache line size for msm8x60 */
+#define CACHELINESIZE 32
+
+#define SCM_ENOMEM -5
+#define SCM_EOPNOTSUPP -4
+#define SCM_EINVAL_ADDR -3
+#define SCM_EINVAL_ARG -2
+#define SCM_ERROR -1
+#define SCM_INTERRUPTED 1
+
+static DEFINE_MUTEX(scm_lock);
+
+/**
+ * struct scm_command - one SCM command buffer
+ * @len: total available memory for command and response
+ * @buf_offset: start of command buffer
+ * @resp_hdr_offset: start of response buffer
+ * @id: command to be executed
+ * @buf: buffer returned from scm_get_command_buffer()
+ *
+ * An SCM command is laid out in memory as follows:
+ *
+ * ------------------- <--- struct scm_command
+ * | command header |
+ * ------------------- <--- scm_get_command_buffer()
+ * | command buffer |
+ * ------------------- <--- struct scm_response and
+ * | response header | scm_command_to_response()
+ * ------------------- <--- scm_get_response_buffer()
+ * | response buffer |
+ * -------------------
+ *
+ * There can be arbitrary padding between the headers and buffers so
+ * you should always use the appropriate scm_get_*_buffer() routines
+ * to access the buffers in a safe manner.
+ */
+struct scm_command {
+ u32 len;
+ u32 buf_offset;
+ u32 resp_hdr_offset;
+ u32 id;
+ u32 buf[0];
+};
+
+/**
+ * struct scm_response - one SCM response buffer
+ * @len: total available memory for response
+ * @buf_offset: start of response data relative to start of scm_response
+ * @is_complete: indicates if the command has finished processing
+ */
+struct scm_response {
+ u32 len;
+ u32 buf_offset;
+ u32 is_complete;
+};
+
+/**
+ * alloc_scm_command() - Allocate an SCM command
+ * @cmd_size: size of the command buffer
+ * @resp_size: size of the response buffer
+ *
+ * Allocate an SCM command, including enough room for the command
+ * and response headers as well as the command and response buffers.
+ *
+ * Returns a valid &scm_command on success or %NULL if the allocation fails.
+ */
+static struct scm_command *alloc_scm_command(size_t cmd_size, size_t resp_size)
+{
+ struct scm_command *cmd;
+ size_t len = sizeof(*cmd) + sizeof(struct scm_response) + cmd_size +
+ resp_size;
+
+ cmd = kzalloc(PAGE_ALIGN(len), GFP_KERNEL);
+ if (cmd) {
+ cmd->len = len;
+ cmd->buf_offset = offsetof(struct scm_command, buf);
+ cmd->resp_hdr_offset = cmd->buf_offset + cmd_size;
+ }
+ return cmd;
+}
+
+/**
+ * free_scm_command() - Free an SCM command
+ * @cmd: command to free
+ *
+ * Free an SCM command.
+ */
+static inline void free_scm_command(struct scm_command *cmd)
+{
+ kfree(cmd);
+}
+
+/**
+ * scm_command_to_response() - Get a pointer to a scm_response
+ * @cmd: command
+ *
+ * Returns a pointer to a response for a command.
+ */
+static inline struct scm_response *scm_command_to_response(
+ const struct scm_command *cmd)
+{
+ return (void *)cmd + cmd->resp_hdr_offset;
+}
+
+/**
+ * scm_get_command_buffer() - Get a pointer to a command buffer
+ * @cmd: command
+ *
+ * Returns a pointer to the command buffer of a command.
+ */
+static inline void *scm_get_command_buffer(const struct scm_command *cmd)
+{
+ return (void *)cmd->buf;
+}
+
+/**
+ * scm_get_response_buffer() - Get a pointer to a response buffer
+ * @rsp: response
+ *
+ * Returns a pointer to a response buffer of a response.
+ */
+static inline void *scm_get_response_buffer(const struct scm_response *rsp)
+{
+ return (void *)rsp + rsp->buf_offset;
+}
+
+static int scm_remap_error(int err)
+{
+ switch (err) {
+ case SCM_ERROR:
+ return -EIO;
+ case SCM_EINVAL_ADDR:
+ case SCM_EINVAL_ARG:
+ return -EINVAL;
+ case SCM_EOPNOTSUPP:
+ return -EOPNOTSUPP;
+ case SCM_ENOMEM:
+ return -ENOMEM;
+ }
+ return -EINVAL;
+}
+
+static u32 smc(u32 cmd_addr)
+{
+ int context_id;
+ register u32 r0 asm("r0") = 1;
+ register u32 r1 asm("r1") = (u32)&context_id;
+ register u32 r2 asm("r2") = cmd_addr;
+ do {
+ asm volatile(
+ __asmeq("%0", "r0")
+ __asmeq("%1", "r0")
+ __asmeq("%2", "r1")
+ __asmeq("%3", "r2")
+#ifdef REQUIRES_SEC
+ ".arch_extension sec\n"
+#endif
+ "smc #0 @ switch to secure world\n"
+ : "=r" (r0)
+ : "r" (r0), "r" (r1), "r" (r2)
+ : "r3");
+ } while (r0 == SCM_INTERRUPTED);
+
+ return r0;
+}
+
+static int __scm_call(const struct scm_command *cmd)
+{
+ int ret;
+ u32 cmd_addr = virt_to_phys(cmd);
+
+ /*
+ * Flush the entire cache here so callers don't have to remember
+ * to flush the cache when passing physical addresses to the secure
+ * side in the buffer.
+ */
+ flush_cache_all();
+ ret = smc(cmd_addr);
+ if (ret < 0)
+ ret = scm_remap_error(ret);
+
+ return ret;
+}
+
+/**
+ * scm_call() - Send an SCM command
+ * @svc_id: service identifier
+ * @cmd_id: command identifier
+ * @cmd_buf: command buffer
+ * @cmd_len: length of the command buffer
+ * @resp_buf: response buffer
+ * @resp_len: length of the response buffer
+ *
+ * Sends a command to the SCM and waits for the command to finish processing.
+ */
+int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
+ void *resp_buf, size_t resp_len)
+{
+ int ret;
+ struct scm_command *cmd;
+ struct scm_response *rsp;
+
+ cmd = alloc_scm_command(cmd_len, resp_len);
+ if (!cmd)
+ return -ENOMEM;
+
+ cmd->id = (svc_id << 10) | cmd_id;
+ if (cmd_buf)
+ memcpy(scm_get_command_buffer(cmd), cmd_buf, cmd_len);
+
+ mutex_lock(&scm_lock);
+ ret = __scm_call(cmd);
+ mutex_unlock(&scm_lock);
+ if (ret)
+ goto out;
+
+ rsp = scm_command_to_response(cmd);
+ do {
+ u32 start = (u32)rsp;
+ u32 end = (u32)scm_get_response_buffer(rsp) + resp_len;
+ start &= ~(CACHELINESIZE - 1);
+ while (start < end) {
+ asm ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start)
+ : "memory");
+ start += CACHELINESIZE;
+ }
+ } while (!rsp->is_complete);
+
+ if (resp_buf)
+ memcpy(resp_buf, scm_get_response_buffer(rsp), resp_len);
+out:
+ free_scm_command(cmd);
+ return ret;
+}
+EXPORT_SYMBOL(scm_call);
+
+u32 scm_get_version(void)
+{
+ int context_id;
+ static u32 version = -1;
+ register u32 r0 asm("r0");
+ register u32 r1 asm("r1");
+
+ if (version != -1)
+ return version;
+
+ mutex_lock(&scm_lock);
+
+ r0 = 0x1 << 8;
+ r1 = (u32)&context_id;
+ do {
+ asm volatile(
+ __asmeq("%0", "r0")
+ __asmeq("%1", "r1")
+ __asmeq("%2", "r0")
+ __asmeq("%3", "r1")
+#ifdef REQUIRES_SEC
+ ".arch_extension sec\n"
+#endif
+ "smc #0 @ switch to secure world\n"
+ : "=r" (r0), "=r" (r1)
+ : "r" (r0), "r" (r1)
+ : "r2", "r3");
+ } while (r0 == SCM_INTERRUPTED);
+
+ version = r1;
+ mutex_unlock(&scm_lock);
+
+ return version;
+}
+EXPORT_SYMBOL(scm_get_version);
--- /dev/null
+/* Copyright (c) 2010, Code Aurora Forum. 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_H
+#define __MACH_SCM_H
+
+#define SCM_SVC_BOOT 0x1
+#define SCM_SVC_PIL 0x2
+
+extern int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
+ void *resp_buf, size_t resp_len);
+
+#define SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF))
+
+extern u32 scm_get_version(void);
+
+#endif
projects / mirror_ubuntu-bionic-kernel.git / commitdiff