redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

ARM: shmobile: Move r8a7791 reset code to pm-r8a7791.c

Browse source 
Move r8a7791 specific reset vector setup code from the
SMP glue code to PM code. This makes the code one step
closer to allow PM operations such as Suspend-to-RAM
in the case when SMP is disabled in the kernel config.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
[horms+renesas@verge.net.au: updated for recent header file changes]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2014-06-06 16:21:11 +09:00 committed by Simon Horman
parent 06f2c5dcc2
commit 8e26118d44
2 changed files with 25 additions and 26 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
arch/arm/mach-shmobile/pm-r8a7791.c
View file

@ -11,12 +11,17 @@
*/
#include <linux/kernel.h>
#include <linux/smp.h>
#include <asm/io.h>
#include "common.h"
#include "pm-rcar.h"
#include "r8a7791.h"
#define RST 0xe6160000
#define CA15BAR 0x0020
#define CA15RESCNT 0x0040
#define RAM 0xe6300000
/* SYSC */
#define SYSCIER 0x0c
#define SYSCIMR 0x10
@ -40,10 +45,28 @@ static inline void r8a7791_sysc_init(void) {}
void __init r8a7791_pm_init(void)
{
void __iomem *p;
u32 bar;
static int once;
if (once++)
return;
/* RAM for jump stub, because BAR requires 256KB aligned address */
p = ioremap_nocache(RAM, shmobile_boot_size);
memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
iounmap(p);
/* setup reset vectors */
p = ioremap_nocache(RST, 0x63);
bar = (RAM >> 8) & 0xfffffc00;
writel_relaxed(bar, p + CA15BAR);
writel_relaxed(bar | 0x10, p + CA15BAR);
/* enable clocks to all CPUs */
writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
p + CA15RESCNT);
iounmap(p);
r8a7791_sysc_init();
}

24
arch/arm/mach-shmobile/smp-r8a7791.c
View file

@ -24,35 +24,11 @@
#include "r8a7791.h"
#include "rcar-gen2.h"
#define RST 0xe6160000
#define CA15BAR 0x0020
#define CA15RESCNT 0x0040
#define RAM 0xe6300000
static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
{
void __iomem *p;
u32 bar;
/* let APMU code install data related to shmobile_boot_vector */
shmobile_smp_apmu_prepare_cpus(max_cpus);
/* RAM for jump stub, because BAR requires 256KB aligned address */
p = ioremap_nocache(RAM, shmobile_boot_size);
memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
iounmap(p);
/* setup reset vectors */
p = ioremap_nocache(RST, 0x63);
bar = (RAM >> 8) & 0xfffffc00;
writel_relaxed(bar, p + CA15BAR);
writel_relaxed(bar | 0x10, p + CA15BAR);
/* enable clocks to all CPUs */
writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
p + CA15RESCNT);
iounmap(p);
r8a7791_pm_init();
shmobile_smp_apmu_suspend_init();
}