OMAP3 PM: off-mode support for HS/EMU devices

For HS/EMU devices, some additional resources need to be
saved/restored for off-mode support.  Namely, saving the secure RAM
and a pointer to it in the scratchpad.

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index 3ea417d7a1b5..b84cff7087b0 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -85,6 +85,8 @@ struct omap3_scratchpad_sdrc_block {
         u32 block_size;
 };
 
+void *omap3_secure_ram_storage;
+
 /*
  * This is used to store ARM registers in SDRAM before attempting
  * an MPU OFF. The save and restore happens from the SRAM sleep code.
@@ -209,7 +211,11 @@ void omap3_save_scratchpad_contents(void)
         scratchpad_contents.boot_config_ptr = 0x0;
         scratchpad_contents.public_restore_ptr =
                          virt_to_phys(get_restore_pointer());
-        scratchpad_contents.secure_ram_restore_ptr = 0x0;
+        if (omap_type() == OMAP2_DEVICE_TYPE_GP)
+                scratchpad_contents.secure_ram_restore_ptr = 0x0;
+        else
+                scratchpad_contents.secure_ram_restore_ptr =
+                        (u32) __pa(omap3_secure_ram_storage);
         scratchpad_contents.sdrc_module_semaphore = 0x0;
         scratchpad_contents.prcm_block_offset = 0x2C;
         scratchpad_contents.sdrc_block_offset = 0x64;