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linux/arch/arm/mach-imx/headsmp.S

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159 Based on 1 normalized pattern(s): the code contained herein is licensed under the gnu general public license you may obtain a copy of the gnu general public license version 2 or later at the following locations http www opensource org licenses gpl license html http www gnu org copyleft gpl html extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 161 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.383790741@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 14:55:08 +08:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
arm/imx6q: add smp and cpu hotplug support It adds smp and cpu hotplug support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-09-06 14:59:40 +08:00
/*
* Copyright 2011 Freescale Semiconductor, Inc.
* Copyright 2011 Linaro Ltd.
*/
#include <linux/linkage.h>
#include <linux/init.h>
ARM: imx: enable big endian mode Enable ARM big-endian mode on mach-imx. This requires adding some byte swapping in the debug functions (which otherwise hang forever) and of course the secondary core bringup. Tested (on top of 4.4) on i.MX6 HummingBoard quad-core (IMX6Q). The patch is pretty much as suggested by Arnd Bergmann, thanks! Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-01-28 00:59:36 +08:00
#include <asm/assembler.h>
arm/imx6q: add smp and cpu hotplug support It adds smp and cpu hotplug support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-09-06 14:59:40 +08:00
ARM: imx: replicate the diagnostic register of boot cpu into secondary cores The diagnostic register holds the errata bits. Mostly bootloader does not bring up secondary cores, so that when errata bits are set in bootloader, they are set only for boot cpu. But on a SMP configuration, it should be equally done on every single core. Set up the diagnostic register for secondary cores by replicating the register from boot cpu. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2013-04-16 22:11:19 +08:00
diag_reg_offset:
.word g_diag_reg - .
.macro set_diag_reg
adr r0, diag_reg_offset
ldr r1, [r0]
add r1, r1, r0 @ r1 = physical &g_diag_reg
ldr r0, [r1]
mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register
.endm
arm/imx6q: add smp and cpu hotplug support It adds smp and cpu hotplug support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-09-06 14:59:40 +08:00
ENTRY(v7_secondary_startup)
ARM: imx: enable big endian mode Enable ARM big-endian mode on mach-imx. This requires adding some byte swapping in the debug functions (which otherwise hang forever) and of course the secondary core bringup. Tested (on top of 4.4) on i.MX6 HummingBoard quad-core (IMX6Q). The patch is pretty much as suggested by Arnd Bergmann, thanks! Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-01-28 00:59:36 +08:00
ARM_BE8(setend be) @ go BE8 if entered LE
ARM: imx: replicate the diagnostic register of boot cpu into secondary cores The diagnostic register holds the errata bits. Mostly bootloader does not bring up secondary cores, so that when errata bits are set in bootloader, they are set only for boot cpu. But on a SMP configuration, it should be equally done on every single core. Set up the diagnostic register for secondary cores by replicating the register from boot cpu. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2013-04-16 22:11:19 +08:00
set_diag_reg
arm/imx6q: add smp and cpu hotplug support It adds smp and cpu hotplug support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-09-06 14:59:40 +08:00
b secondary_startup
ENDPROC(v7_secondary_startup)