Introduce a new mach-qcom that will support SoCs that intend to be multiplatform compatiable while keeping mach-msm to legacy SoC/board support that will not transition over to multiplatform. As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over to mach-qcom. Signed-off-by: Kumar Gala <galak@xxxxxxxxxxxxxx> --- MAINTAINERS | 8 ++ arch/arm/Kconfig | 7 +- arch/arm/Kconfig.debug | 2 +- arch/arm/Makefile | 1 + arch/arm/boot/dts/Makefile | 6 +- arch/arm/mach-msm/Kconfig | 45 +------ arch/arm/mach-msm/Makefile | 6 - arch/arm/mach-msm/board-dt.c | 41 ------ arch/arm/mach-msm/platsmp.c | 137 ------------------- arch/arm/mach-msm/scm-boot.c | 39 ------ arch/arm/mach-msm/scm-boot.h | 22 ---- arch/arm/mach-msm/scm.c | 299 ------------------------------------------ arch/arm/mach-msm/scm.h | 25 ---- arch/arm/mach-qcom/Kconfig | 33 +++++ arch/arm/mach-qcom/Makefile | 5 + arch/arm/mach-qcom/board.c | 40 ++++++ arch/arm/mach-qcom/scm-boot.c | 39 ++++++ arch/arm/mach-qcom/scm-boot.h | 22 ++++ arch/arm/mach-qcom/scm.c | 299 ++++++++++++++++++++++++++++++++++++++++++ arch/arm/mach-qcom/scm.h | 25 ++++ arch/arm/mach-qcom/smp.c | 137 +++++++++++++++++++ 21 files changed, 619 insertions(+), 619 deletions(-) delete mode 100644 arch/arm/mach-msm/board-dt.c delete mode 100644 arch/arm/mach-msm/platsmp.c delete mode 100644 arch/arm/mach-msm/scm-boot.c delete mode 100644 arch/arm/mach-msm/scm-boot.h delete mode 100644 arch/arm/mach-msm/scm.c delete mode 100644 arch/arm/mach-msm/scm.h create mode 100644 arch/arm/mach-qcom/Kconfig create mode 100644 arch/arm/mach-qcom/Makefile create mode 100644 arch/arm/mach-qcom/board.c create mode 100644 arch/arm/mach-qcom/scm-boot.c create mode 100644 arch/arm/mach-qcom/scm-boot.h create mode 100644 arch/arm/mach-qcom/scm.c create mode 100644 arch/arm/mach-qcom/scm.h create mode 100644 arch/arm/mach-qcom/smp.c diff --git a/MAINTAINERS b/MAINTAINERS index b2cf5cf..402be60 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1167,6 +1167,14 @@ L: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers) W: http://www.arm.linux.org.uk/ S: Maintained +ARM/QUALCOMM SUPPORT +M: Kumar Gala <galak@xxxxxxxxxxxxxx> +M: David Brown <davidb@xxxxxxxxxxxxxx> +L: linux-arm-msm@xxxxxxxxxxxxxxx +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@xxxxxxxxxxxxxx> L: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e254198..f093f20 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -657,9 +657,8 @@ config ARCH_PXA 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 @@ -1005,6 +1004,8 @@ source "arch/arm/plat-pxa/Kconfig" source "arch/arm/mach-mmp/Kconfig" +source "arch/arm/mach-qcom/Kconfig" + source "arch/arm/mach-realview/Kconfig" source "arch/arm/mach-rockchip/Kconfig" diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 0531da8..4491c7b 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -956,7 +956,7 @@ config DEBUG_STI_UART config DEBUG_MSM_UART bool - depends on ARCH_MSM + depends on ARCH_MSM || ARCH_QCOM config DEBUG_LL_INCLUDE string diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 08a9ef5..51e5bed 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -180,6 +180,7 @@ machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 machine-$(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 diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index b9d6a8b..c9eaf1f 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -118,9 +118,6 @@ dtb-$(CONFIG_ARCH_KIRKWOOD) += kirkwood-cloudbox.dtb \ kirkwood-ts219-6282.dtb dtb-$(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-$(CONFIG_ARCH_MVEBU) += armada-370-db.dtb \ armada-370-mirabox.dtb \ armada-370-netgear-rn102.dtb \ @@ -232,6 +229,9 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.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 \ diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig index 3c4eca7..a7f959e 100644 --- a/arch/arm/mach-msm/Kconfig +++ b/arch/arm/mach-msm/Kconfig @@ -1,50 +1,9 @@ -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" @@ -99,7 +58,7 @@ config MSM_VIC bool menu "Qualcomm MSM Board Type" - depends on ARCH_MSM_NODT + depends on ARCH_MSM config MACH_HALIBUT depends on ARCH_MSM diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile index 04b1bee..27c078a 100644 --- a/arch/arm/mach-msm/Makefile +++ b/arch/arm/mach-msm/Makefile @@ -13,17 +13,11 @@ obj-$(CONFIG_ARCH_QSD8X50) += dma.o io.o obj-$(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 diff --git a/arch/arm/mach-msm/board-dt.c b/arch/arm/mach-msm/board-dt.c deleted file mode 100644 index 1f11d93..0000000 --- a/arch/arm/mach-msm/board-dt.c +++ /dev/null @@ -1,41 +0,0 @@ -/* 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 diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-msm/platsmp.c deleted file mode 100644 index 251a91e..0000000 --- a/arch/arm/mach-msm/platsmp.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * 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 -}; diff --git a/arch/arm/mach-msm/scm-boot.c b/arch/arm/mach-msm/scm-boot.c deleted file mode 100644 index 45cee3e..0000000 --- a/arch/arm/mach-msm/scm-boot.c +++ /dev/null @@ -1,39 +0,0 @@ -/* 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); diff --git a/arch/arm/mach-msm/scm-boot.h b/arch/arm/mach-msm/scm-boot.h deleted file mode 100644 index 7be32ff..0000000 --- a/arch/arm/mach-msm/scm-boot.h +++ /dev/null @@ -1,22 +0,0 @@ -/* 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 diff --git a/arch/arm/mach-msm/scm.c b/arch/arm/mach-msm/scm.c deleted file mode 100644 index c536fd6..0000000 --- a/arch/arm/mach-msm/scm.c +++ /dev/null @@ -1,299 +0,0 @@ -/* 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); diff --git a/arch/arm/mach-msm/scm.h b/arch/arm/mach-msm/scm.h deleted file mode 100644 index 00b31ea..0000000 --- a/arch/arm/mach-msm/scm.h +++ /dev/null @@ -1,25 +0,0 @@ -/* 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 diff --git a/arch/arm/mach-qcom/Kconfig b/arch/arm/mach-qcom/Kconfig new file mode 100644 index 0000000..755b0db --- /dev/null +++ b/arch/arm/mach-qcom/Kconfig @@ -0,0 +1,33 @@ +config ARCH_QCOM + bool "Qualcomm Support" if ARCH_MULTI_V7 + select ARCH_REQUIRE_GPIOLIB + select CLKSRC_OF + select GENERIC_CLOCKEVENTS + select ARM_GIC + 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 diff --git a/arch/arm/mach-qcom/Makefile b/arch/arm/mach-qcom/Makefile new file mode 100644 index 0000000..c0ba0ef --- /dev/null +++ b/arch/arm/mach-qcom/Makefile @@ -0,0 +1,5 @@ +obj-y := board.o +obj-$(CONFIG_SMP) += smp.o +obj-$(CONFIG_QCOM_SCM) += scm.o scm-boot.o + +CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1) diff --git a/arch/arm/mach-qcom/board.c b/arch/arm/mach-qcom/board.c new file mode 100644 index 0000000..4529f6b --- /dev/null +++ b/arch/arm/mach-qcom/board.c @@ -0,0 +1,40 @@ +/* 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 diff --git a/arch/arm/mach-qcom/scm-boot.c b/arch/arm/mach-qcom/scm-boot.c new file mode 100644 index 0000000..45cee3e --- /dev/null +++ b/arch/arm/mach-qcom/scm-boot.c @@ -0,0 +1,39 @@ +/* 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); diff --git a/arch/arm/mach-qcom/scm-boot.h b/arch/arm/mach-qcom/scm-boot.h new file mode 100644 index 0000000..7be32ff --- /dev/null +++ b/arch/arm/mach-qcom/scm-boot.h @@ -0,0 +1,22 @@ +/* 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 diff --git a/arch/arm/mach-qcom/scm.c b/arch/arm/mach-qcom/scm.c new file mode 100644 index 0000000..c536fd6 --- /dev/null +++ b/arch/arm/mach-qcom/scm.c @@ -0,0 +1,299 @@ +/* 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); diff --git a/arch/arm/mach-qcom/scm.h b/arch/arm/mach-qcom/scm.h new file mode 100644 index 0000000..00b31ea --- /dev/null +++ b/arch/arm/mach-qcom/scm.h @@ -0,0 +1,25 @@ +/* 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 diff --git a/arch/arm/mach-qcom/smp.c b/arch/arm/mach-qcom/smp.c new file mode 100644 index 0000000..67823a7 --- /dev/null +++ b/arch/arm/mach-qcom/smp.c @@ -0,0 +1,137 @@ +/* + * 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 +}; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
