summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/omap-smp.c
diff options
context:
space:
mode:
authorSantosh Shilimkar <santosh.shilimkar@ti.com>2009-12-11 16:16:35 -0800
committerTony Lindgren <tony@atomide.com>2009-12-11 16:16:35 -0800
commit942e2c9e529a57ce2bb1cf984d58f88d9b6e77e5 (patch)
tree2892251635eafe9fa4a323a698d501c7ce9cb178 /arch/arm/mach-omap2/omap-smp.c
parenta7c3ae2cb6d144bdf6c582898d2368f5f91a1775 (diff)
downloadlinux-942e2c9e529a57ce2bb1cf984d58f88d9b6e77e5.tar.gz
linux-942e2c9e529a57ce2bb1cf984d58f88d9b6e77e5.tar.bz2
linux-942e2c9e529a57ce2bb1cf984d58f88d9b6e77e5.zip
OMAP4: AuxCoreBoot registers only accessible in secure mode
The AuxCoreBoot0 and AuxCoreBoot1 can be only accessed in secure mode. Replace the current code with secure monitor API's to access/modify these registers. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/omap-smp.c')
-rw-r--r--arch/arm/mach-omap2/omap-smp.c24
1 files changed, 8 insertions, 16 deletions
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 4890bcf4dadd..59e847843af5 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -21,15 +21,12 @@
#include <linux/smp.h>
#include <linux/io.h>
+#include <asm/cacheflush.h>
#include <asm/localtimer.h>
#include <asm/smp_scu.h>
#include <mach/hardware.h>
#include <plat/common.h>
-/* Registers used for communicating startup information */
-static void __iomem *omap4_auxcoreboot_reg0;
-static void __iomem *omap4_auxcoreboot_reg1;
-
/* SCU base address */
static void __iomem *scu_base;
@@ -74,12 +71,13 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
spin_lock(&boot_lock);
/*
- * Update the AuxCoreBoot1 with boot state for secondary core.
+ * Update the AuxCoreBoot0 with boot state for secondary core.
* omap_secondary_startup() routine will hold the secondary core till
* the AuxCoreBoot1 register is updated with cpu state
* A barrier is added to ensure that write buffer is drained
*/
- __raw_writel(cpu, omap4_auxcoreboot_reg1);
+ omap_modify_auxcoreboot0(0x200, 0x0);
+ flush_cache_all();
smp_wmb();
timeout = jiffies + (1 * HZ);
@@ -99,17 +97,18 @@ static void __init wakeup_secondary(void)
{
/*
* Write the address of secondary startup routine into the
- * AuxCoreBoot0 where ROM code will jump and start executing
+ * AuxCoreBoot1 where ROM code will jump and start executing
* on secondary core once out of WFE
* A barrier is added to ensure that write buffer is drained
*/
- __raw_writel(virt_to_phys(omap_secondary_startup), \
- omap4_auxcoreboot_reg0);
+ omap_auxcoreboot_addr(virt_to_phys(omap_secondary_startup));
smp_wmb();
/*
* Send a 'sev' to wake the secondary core from WFE.
+ * Drain the outstanding writes to memory
*/
+ dsb();
set_event();
mb();
}
@@ -136,7 +135,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
{
unsigned int ncores = get_core_count();
unsigned int cpu = smp_processor_id();
- void __iomem *omap4_wkupgen_base;
int i;
/* sanity check */
@@ -168,12 +166,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);
- /* Never released */
- omap4_wkupgen_base = ioremap(OMAP44XX_WKUPGEN_BASE, SZ_4K);
- BUG_ON(!omap4_wkupgen_base);
- omap4_auxcoreboot_reg0 = omap4_wkupgen_base + 0x800;
- omap4_auxcoreboot_reg1 = omap4_wkupgen_base + 0x804;
-
if (max_cpus > 1) {
/*
* Enable the local timer or broadcast device for the