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From: "Mylène Josserand" <mylene.josserand@bootlin.com>
To: linux@armlinux.org.uk, maxime.ripard@bootlin.com, wens@csie.org,
	marc.zyngier@arm.com, mark.rutland@arm.com, robh+dt@kernel.org,
	horms@verge.net.au, geert@linux-m68k.org, magnus.damm@gmail.com
Cc: linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org,
	clabbe.montjoie@gmail.com, quentin.schulz@bootlin.com,
	thomas.petazzoni@bootlin.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, mylene.josserand@bootlin.com
Subject: [PATCH v8 07/12] ARM: sunxi: Add initialization of CNTVOFF
Date: Tue,  1 May 2018 14:31:26 +0200	[thread overview]
Message-ID: <20180501123131.7738-8-mylene.josserand@bootlin.com> (raw)
In-Reply-To: <20180501123131.7738-1-mylene.josserand@bootlin.com>

Add the initialization of CNTVOFF for sun8i-a83t.

For boot CPU, create a new machine that handles this
function's call in an "init_early" callback. We need to initialize
CNTVOFF before the arch timer's initialization otherwise, it will
not be taken into account and fails to boot correctly.
Because of that, this function can't be called in SMP's early_initcall
function which is called after timer's init.

For secondary CPUs, add this function into secondary_startup
assembly entry.

Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 arch/arm/mach-sunxi/headsmp.S |  1 +
 arch/arm/mach-sunxi/sunxi.c   | 20 +++++++++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-sunxi/headsmp.S b/arch/arm/mach-sunxi/headsmp.S
index 37dc772701f3..32d76be98541 100644
--- a/arch/arm/mach-sunxi/headsmp.S
+++ b/arch/arm/mach-sunxi/headsmp.S
@@ -71,6 +71,7 @@ ENDPROC(sunxi_mc_smp_cluster_cache_enable)
 
 ENTRY(sunxi_mc_smp_secondary_startup)
 	bl	sunxi_mc_smp_cluster_cache_enable
+	bl	secure_cntvoff_init
 	b	secondary_startup
 ENDPROC(sunxi_mc_smp_secondary_startup)
 
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 5e9602ce1573..2770a31a9278 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 
 #include <asm/mach/arch.h>
+#include <asm/secure_cntvoff.h>
 
 static const char * const sunxi_board_dt_compat[] = {
 	"allwinner,sun4i-a10",
@@ -62,7 +63,6 @@ MACHINE_END
 static const char * const sun8i_board_dt_compat[] = {
 	"allwinner,sun8i-a23",
 	"allwinner,sun8i-a33",
-	"allwinner,sun8i-a83t",
 	"allwinner,sun8i-h2-plus",
 	"allwinner,sun8i-h3",
 	"allwinner,sun8i-r40",
@@ -75,6 +75,24 @@ DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i Family")
 	.dt_compat	= sun8i_board_dt_compat,
 MACHINE_END
 
+void __init sun8i_a83t_cntvoff_init(void)
+{
+#ifdef CONFIG_SMP
+	secure_cntvoff_init();
+#endif
+}
+
+static const char * const sun8i_a83t_cntvoff_board_dt_compat[] = {
+	"allwinner,sun8i-a83t",
+	NULL,
+};
+
+DT_MACHINE_START(SUN8I_CNTVOFF_DT, "Allwinner sun8i-a83t board")
+	.init_early	= sun8i_a83t_cntvoff_init,
+	.init_time	= sun6i_timer_init,
+	.dt_compat	= sun8i_a83t_cntvoff_board_dt_compat,
+MACHINE_END
+
 static const char * const sun9i_board_dt_compat[] = {
 	"allwinner,sun9i-a80",
 	NULL,
-- 
2.11.0

WARNING: multiple messages have this Message-ID
From: mylene.josserand@bootlin.com (Mylène Josserand)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v8 07/12] ARM: sunxi: Add initialization of CNTVOFF
Date: Tue,  1 May 2018 14:31:26 +0200	[thread overview]
Message-ID: <20180501123131.7738-8-mylene.josserand@bootlin.com> (raw)
In-Reply-To: <20180501123131.7738-1-mylene.josserand@bootlin.com>

Add the initialization of CNTVOFF for sun8i-a83t.

For boot CPU, create a new machine that handles this
function's call in an "init_early" callback. We need to initialize
CNTVOFF before the arch timer's initialization otherwise, it will
not be taken into account and fails to boot correctly.
Because of that, this function can't be called in SMP's early_initcall
function which is called after timer's init.

For secondary CPUs, add this function into secondary_startup
assembly entry.

Signed-off-by: Myl?ne Josserand <mylene.josserand@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 arch/arm/mach-sunxi/headsmp.S |  1 +
 arch/arm/mach-sunxi/sunxi.c   | 20 +++++++++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-sunxi/headsmp.S b/arch/arm/mach-sunxi/headsmp.S
index 37dc772701f3..32d76be98541 100644
--- a/arch/arm/mach-sunxi/headsmp.S
+++ b/arch/arm/mach-sunxi/headsmp.S
@@ -71,6 +71,7 @@ ENDPROC(sunxi_mc_smp_cluster_cache_enable)
 
 ENTRY(sunxi_mc_smp_secondary_startup)
 	bl	sunxi_mc_smp_cluster_cache_enable
+	bl	secure_cntvoff_init
 	b	secondary_startup
 ENDPROC(sunxi_mc_smp_secondary_startup)
 
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 5e9602ce1573..2770a31a9278 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 
 #include <asm/mach/arch.h>
+#include <asm/secure_cntvoff.h>
 
 static const char * const sunxi_board_dt_compat[] = {
 	"allwinner,sun4i-a10",
@@ -62,7 +63,6 @@ MACHINE_END
 static const char * const sun8i_board_dt_compat[] = {
 	"allwinner,sun8i-a23",
 	"allwinner,sun8i-a33",
-	"allwinner,sun8i-a83t",
 	"allwinner,sun8i-h2-plus",
 	"allwinner,sun8i-h3",
 	"allwinner,sun8i-r40",
@@ -75,6 +75,24 @@ DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i Family")
 	.dt_compat	= sun8i_board_dt_compat,
 MACHINE_END
 
+void __init sun8i_a83t_cntvoff_init(void)
+{
+#ifdef CONFIG_SMP
+	secure_cntvoff_init();
+#endif
+}
+
+static const char * const sun8i_a83t_cntvoff_board_dt_compat[] = {
+	"allwinner,sun8i-a83t",
+	NULL,
+};
+
+DT_MACHINE_START(SUN8I_CNTVOFF_DT, "Allwinner sun8i-a83t board")
+	.init_early	= sun8i_a83t_cntvoff_init,
+	.init_time	= sun6i_timer_init,
+	.dt_compat	= sun8i_a83t_cntvoff_board_dt_compat,
+MACHINE_END
+
 static const char * const sun9i_board_dt_compat[] = {
 	"allwinner,sun9i-a80",
 	NULL,
-- 
2.11.0

  parent reply	other threads:[~2018-05-01 12:32 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-01 12:31 [PATCH v8 00/12] Sunxi: Add SMP support on A83T Mylène Josserand
2018-05-01 12:31 ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 01/12] ARM: Allow this header to be included by assembly files Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 02/12] ARM: sunxi: smp: Move assembly code into a file Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-02 13:18   ` Maxime Ripard
2018-05-02 13:18     ` Maxime Ripard
2018-05-01 12:31 ` [PATCH v8 03/12] ARM: dts: sun8i: Add CPUCFG device node for A83T dtsi Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 04/12] ARM: dts: sun8i: Add R_CPUCFG device node for the " Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 05/12] ARM: dts: sun8i: a83t: Add CCI-400 node Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 06/12] ARM: smp: Add initialization of CNTVOFF Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` Mylène Josserand [this message]
2018-05-01 12:31   ` [PATCH v8 07/12] ARM: sunxi: " Mylène Josserand
2018-05-02 13:08   ` Maxime Ripard
2018-05-02 13:08     ` Maxime Ripard
2018-05-02 13:28     ` Mylène Josserand
2018-05-02 13:28       ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 08/12] ARM: sun9i: smp: Rename clusters's power-off Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 09/12] ARM: sun9i: smp: Add is_a83t field Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-02 13:09   ` Maxime Ripard
2018-05-02 13:09     ` Maxime Ripard
2018-05-01 12:31 ` [PATCH v8 10/12] ARM: sun8i: smp: Add support for A83T Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-02 13:14   ` Maxime Ripard
2018-05-02 13:14     ` Maxime Ripard
2018-05-01 12:31 ` [PATCH v8 11/12] ARM: dts: sun8i: Add enable-method for SMP support for the A83T SoC Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-01 12:31 ` [PATCH v8 12/12] ARM: shmobile: Convert file to use cntvoff Mylène Josserand
2018-05-01 12:31   ` Mylène Josserand
2018-05-02  6:36   ` Simon Horman
2018-05-02  6:36     ` Simon Horman
2018-05-02 13:18     ` Maxime Ripard
2018-05-02 13:18       ` Maxime Ripard

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