From: Magnus Damm <magnus.damm@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 06/06] ARM: shmobile: Remove old SCU boot code
Date: Mon, 10 Jun 2013 09:20:25 +0000 [thread overview]
Message-ID: <20130610092025.18944.77279.sendpatchset@w520> (raw)
In-Reply-To: <20130610091925.18944.68117.sendpatchset@w520>
From: Magnus Damm <damm@opensource.se>
Remove shmobile_secondary_vector_scu now when all SCU enabled
SMP platforms instead make use of shmobile_boot_scu. This
removes two inline virtual to physical address conversions.
Signed-off-by: Magnus Damm <damm@opensource.se>
---
arch/arm/mach-shmobile/headsmp-scu.S | 22 +---------------------
arch/arm/mach-shmobile/include/mach/common.h | 1 -
2 files changed, 1 insertion(+), 22 deletions(-)
--- 0028/arch/arm/mach-shmobile/headsmp-scu.S
+++ work/arch/arm/mach-shmobile/headsmp-scu.S 2013-06-05 14:36:41.000000000 +0900
@@ -25,32 +25,12 @@
__CPUINIT
/*
- * Reset vector for secondary CPUs.
+ * Boot code for secondary CPUs.
*
* First we turn on L1 cache coherency for our CPU. Then we jump to
* shmobile_invalidate_start that invalidates the cache and hands over control
* to the common ARM startup code.
- * This function will be mapped to address 0 by the SBAR register.
- * A normal branch is out of range here so we need a long jump. We jump to
- * the physical address as the MMU is still turned off.
*/
- .align 12
-ENTRY(shmobile_secondary_vector_scu)
- mrc p15, 0, r0, c0, c0, 5 @ read MIPDR
- and r0, r0, #3 @ mask out cpu ID
- lsl r0, r0, #3 @ we will shift by cpu_id * 8 bits
- ldr r1, 2f
- ldr r1, [r1] @ SCU base address
- ldr r2, [r1, #8] @ SCU Power Status Register
- mov r3, #3
- bic r2, r2, r3, lsl r0 @ Clear bits of our CPU (Run Mode)
- str r2, [r1, #8] @ write back
-
- ldr pc, 1f
-1: .long shmobile_invalidate_start - PAGE_OFFSET + PLAT_PHYS_OFFSET
-2: .long shmobile_scu_base - PAGE_OFFSET + PLAT_PHYS_OFFSET
-ENDPROC(shmobile_secondary_vector_scu)
-
ENTRY(shmobile_boot_scu)
@ r0 = SCU base address
mrc p15, 0, r1, c0, c0, 5 @ read MIPDR
--- 0028/arch/arm/mach-shmobile/include/mach/common.h
+++ work/arch/arm/mach-shmobile/include/mach/common.h 2013-06-05 14:35:54.000000000 +0900
@@ -10,7 +10,6 @@ extern void shmobile_setup_console(void)
extern void shmobile_boot_vector(void);
extern unsigned long shmobile_boot_fn;
extern unsigned long shmobile_boot_arg;
-extern void shmobile_secondary_vector_scu(void);
extern void shmobile_boot_scu(void);
struct clk;
extern int shmobile_clk_init(void);
WARNING: multiple messages have this Message-ID (diff)
From: magnus.damm@gmail.com (Magnus Damm)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 06/06] ARM: shmobile: Remove old SCU boot code
Date: Mon, 10 Jun 2013 18:20:25 +0900 [thread overview]
Message-ID: <20130610092025.18944.77279.sendpatchset@w520> (raw)
In-Reply-To: <20130610091925.18944.68117.sendpatchset@w520>
From: Magnus Damm <damm@opensource.se>
Remove shmobile_secondary_vector_scu now when all SCU enabled
SMP platforms instead make use of shmobile_boot_scu. This
removes two inline virtual to physical address conversions.
Signed-off-by: Magnus Damm <damm@opensource.se>
---
arch/arm/mach-shmobile/headsmp-scu.S | 22 +---------------------
arch/arm/mach-shmobile/include/mach/common.h | 1 -
2 files changed, 1 insertion(+), 22 deletions(-)
--- 0028/arch/arm/mach-shmobile/headsmp-scu.S
+++ work/arch/arm/mach-shmobile/headsmp-scu.S 2013-06-05 14:36:41.000000000 +0900
@@ -25,32 +25,12 @@
__CPUINIT
/*
- * Reset vector for secondary CPUs.
+ * Boot code for secondary CPUs.
*
* First we turn on L1 cache coherency for our CPU. Then we jump to
* shmobile_invalidate_start that invalidates the cache and hands over control
* to the common ARM startup code.
- * This function will be mapped to address 0 by the SBAR register.
- * A normal branch is out of range here so we need a long jump. We jump to
- * the physical address as the MMU is still turned off.
*/
- .align 12
-ENTRY(shmobile_secondary_vector_scu)
- mrc p15, 0, r0, c0, c0, 5 @ read MIPDR
- and r0, r0, #3 @ mask out cpu ID
- lsl r0, r0, #3 @ we will shift by cpu_id * 8 bits
- ldr r1, 2f
- ldr r1, [r1] @ SCU base address
- ldr r2, [r1, #8] @ SCU Power Status Register
- mov r3, #3
- bic r2, r2, r3, lsl r0 @ Clear bits of our CPU (Run Mode)
- str r2, [r1, #8] @ write back
-
- ldr pc, 1f
-1: .long shmobile_invalidate_start - PAGE_OFFSET + PLAT_PHYS_OFFSET
-2: .long shmobile_scu_base - PAGE_OFFSET + PLAT_PHYS_OFFSET
-ENDPROC(shmobile_secondary_vector_scu)
-
ENTRY(shmobile_boot_scu)
@ r0 = SCU base address
mrc p15, 0, r1, c0, c0, 5 @ read MIPDR
--- 0028/arch/arm/mach-shmobile/include/mach/common.h
+++ work/arch/arm/mach-shmobile/include/mach/common.h 2013-06-05 14:35:54.000000000 +0900
@@ -10,7 +10,6 @@ extern void shmobile_setup_console(void)
extern void shmobile_boot_vector(void);
extern unsigned long shmobile_boot_fn;
extern unsigned long shmobile_boot_arg;
-extern void shmobile_secondary_vector_scu(void);
extern void shmobile_boot_scu(void);
struct clk;
extern int shmobile_clk_init(void);
next prev parent reply other threads:[~2013-06-10 9:20 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-10 9:19 [PATCH 00/06] ARM: shmobile: SMP virt_to_phys() conversion Magnus Damm
2013-06-10 9:19 ` Magnus Damm
2013-06-10 9:19 ` [PATCH 01/06] ARM: shmobile: Add SMP boot function and argument Magnus Damm
2013-06-10 9:19 ` Magnus Damm
2013-06-12 14:09 ` Simon Horman
2013-06-12 14:09 ` Simon Horman
2013-06-10 9:19 ` [PATCH 02/06] ARM: shmobile: Add SCU boot function using argument Magnus Damm
2013-06-10 9:19 ` Magnus Damm
2013-06-12 14:09 ` Simon Horman
2013-06-12 14:09 ` Simon Horman
2013-06-10 9:19 ` [PATCH 03/06] ARM: shmobile: r8a7779 SMP with SCU boot fn and args Magnus Damm
2013-06-10 9:19 ` Magnus Damm
2013-06-12 14:09 ` Simon Horman
2013-06-12 14:09 ` Simon Horman
2013-06-10 9:20 ` [PATCH 04/06] ARM: shmobile: sh73a0 " Magnus Damm
2013-06-10 9:20 ` Magnus Damm
2013-06-12 14:09 ` Simon Horman
2013-06-12 14:09 ` Simon Horman
2013-06-10 9:20 ` [PATCH 05/06] ARM: shmobile: EMEV2 " Magnus Damm
2013-06-10 9:20 ` Magnus Damm
2013-06-12 14:09 ` Simon Horman
2013-06-12 14:09 ` Simon Horman
2013-06-10 9:20 ` Magnus Damm [this message]
2013-06-10 9:20 ` [PATCH 06/06] ARM: shmobile: Remove old SCU boot code Magnus Damm
2013-06-12 14:10 ` Simon Horman
2013-06-12 14:10 ` Simon Horman
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