From: Luis Araneda <luaraneda@gmail.com>
To: linux@armlinux.org.uk, michal.simek@xilinx.com
Cc: stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Luis Araneda <luaraneda@gmail.com>
Subject: [PATCH 1/2] ARM: zynq: support smp in thumb mode
Date: Mon, 5 Aug 2019 23:07:17 -0400 [thread overview]
Message-ID: <20190806030718.29048-2-luaraneda@gmail.com> (raw)
In-Reply-To: <20190806030718.29048-1-luaraneda@gmail.com>
Add .arm directive to headsmp.S to ensure that the
CPU starts in 32-bit ARM mode and the correct code
size is copied on smp bring-up
Additionally, start secondary CPUs on secondary_startup_arm
to automatically switch from ARM to thumb on a thumb kernel
Suggested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Luis Araneda <luaraneda@gmail.com>
---
arch/arm/mach-zynq/headsmp.S | 2 ++
arch/arm/mach-zynq/platsmp.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-zynq/headsmp.S b/arch/arm/mach-zynq/headsmp.S
index ab85003cf9ad..3449e0d1f990 100644
--- a/arch/arm/mach-zynq/headsmp.S
+++ b/arch/arm/mach-zynq/headsmp.S
@@ -7,6 +7,8 @@
#include <linux/init.h>
#include <asm/assembler.h>
+ .arm
+
ENTRY(zynq_secondary_trampoline)
ARM_BE8(setend be) @ ensure we are in BE8 mode
ldr r0, zynq_secondary_trampoline_jump
diff --git a/arch/arm/mach-zynq/platsmp.c b/arch/arm/mach-zynq/platsmp.c
index a7cfe07156f4..38728badabd4 100644
--- a/arch/arm/mach-zynq/platsmp.c
+++ b/arch/arm/mach-zynq/platsmp.c
@@ -81,7 +81,7 @@ EXPORT_SYMBOL(zynq_cpun_start);
static int zynq_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
- return zynq_cpun_start(__pa_symbol(secondary_startup), cpu);
+ return zynq_cpun_start(__pa_symbol(secondary_startup_arm), cpu);
}
/*
--
2.22.0
next prev parent reply other threads:[~2019-08-06 3:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-06 3:07 [PATCH 0/2] ARM: zynq: smp improvements Luis Araneda
2019-08-06 3:07 ` Luis Araneda [this message]
2019-08-06 5:17 ` [PATCH 1/2] ARM: zynq: support smp in thumb mode Greg KH
2019-08-06 6:39 ` Michal Simek
2019-08-06 12:40 ` Luis Araneda
2019-08-08 9:18 ` Michal Simek
2019-08-06 3:07 ` [PATCH 2/2] ARM: zynq: Use memcpy_toio instead of memcpy on smp bring-up Luis Araneda
2019-08-06 5:17 ` Greg KH
2019-08-06 6:41 ` Michal Simek
2019-08-06 12:49 ` Luis Araneda
2019-08-08 9:19 ` Michal Simek
2019-08-06 5:17 ` [PATCH 0/2] ARM: zynq: smp improvements Greg KH
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190806030718.29048-2-luaraneda@gmail.com \
--to=luaraneda@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=michal.simek@xilinx.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).