On Tue, Jan 29, 2013 at 12:33:25 +0100, Russell King - ARM Linux wrote:
> On Tue, Jan 29, 2013 at 03:43:31PM +0530, srinidhi kasagar wrote:
> > Add 'smc' (Secure Monitor Call) identifier to differentiates
> > the platforms which implements this.
>
> This patch makes no sense.
>
> So, if setting 'smc' in the DT description is supposed to mean that
> the platform has a secure monitor then...
>
> > + is_smc = of_property_read_bool(np, "smc");
> > +
> > + if (is_smc) {
> > + /* set the debug interface */
> > + outer_cache.set_debug = pl310_set_debug;
> > + }
>
> Now, let's look at what pl310_set_debug() does:
>
> static void pl310_set_debug(unsigned long val)
> {
> writel_relaxed(val, l2x0_base + L2X0_DEBUG_CTRL);
> }
>
> Can you explain where the secure monitor call is there please, because
> I can't see one. In fact, this is the function used when there _isn't_
> a secure monitor. So this patch just seems totally wrong to me.
Today, one and only platform is omap. Please check below snapshot:
--- a/arch/arm/boot/dts/omap4.dtsi
+++ b/arch/arm/boot/dts/omap4.dtsi
@@ -51,6 +51,7 @@
reg = <0x48242000 0x1000>;
cache-unified;
cache-level = <2>;
+ smc;
};
[...]
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -214,7 +214,7 @@ static int __init omap_l2_cache_init(void)
if (of_have_populated_dt())
l2x0_of_init(aux_ctrl, L2X0_AUX_CTRL_MASK);
else
- l2x0_init(l2cache_base, aux_ctrl, L2X0_AUX_CTRL_MASK);
+ l2x0_init(l2cache_base, aux_ctrl, L2X0_AUX_CTRL_MASK, true);
regards/srinidhi
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