[PATCH] ARM: /proc/cpuinfo: DT: Add support for Revision

Pali Rohár
2015-02-27T15:56:09Z

On Monday 26 January 2015 23:34:34 Andreas F?rber wrote:
> Am 26.01.2015 um 20:09 schrieb Pali Roh?r:
> > diff --git a/arch/arm/kernel/devtree.c
> > b/arch/arm/kernel/devtree.c index 11c54de..9946c1b 100644
> > --- a/arch/arm/kernel/devtree.c
> > +++ b/arch/arm/kernel/devtree.c
>
> [...]
>
> > @@ -204,6 +206,8 @@ static const void * __init
> > arch_get_next_mach(const char *const **match)
> >
> > const struct machine_desc * __init
> > setup_machine_fdt(unsigned int dt_phys) {
> >
> > const struct machine_desc *mdesc, *mdesc_best = NULL;
> >
> > + unsigned long dt_root;
> > + const u32 *prop;
> >
> > #ifdef CONFIG_ARCH_MULTIPLATFORM
> >
> > DT_MACHINE_START(GENERIC_DT, "Generic DT based system")
> >
> > @@ -215,17 +219,16 @@ const struct machine_desc * __init
> > setup_machine_fdt(unsigned int dt_phys)
> >
> > if (!dt_phys ||
> > !early_init_dt_verify(phys_to_virt(dt_phys)))
> >
> > return NULL;
> >
> > + dt_root = of_get_flat_dt_root();
> >
> > mdesc = of_flat_dt_match_machine(mdesc_best,
> > arch_get_next_mach);
> >
> > if (!mdesc) {
> >
> > const char *prop;
>
> Probably the use of two differently typed variables of name
> "prop" in this function is not intentional?
>

Fixed in PATCH v2.

> Regards,
> Andreas
>
> > int size;
> >
> > - unsigned long dt_root;
> >
> > early_print("\nError: unrecognized/unsupported "
> >
> > "device tree compatible list:\n[ ");
> >
> > - dt_root = of_get_flat_dt_root();
> >
> > prop = of_get_flat_dt_prop(dt_root, "compatible",
&size);
> > while (size > 0) {
> >
> > early_print("'%s' ", prop);
> >
> > @@ -246,5 +249,10 @@ const struct machine_desc * __init
> > setup_machine_fdt(unsigned int dt_phys)
> >
> > /* Change machine number to match the mdesc we're using */
> > __machine_arch_type = mdesc->nr;
> >
> > + /* Set system revision from DT */
> > + prop = of_get_flat_dt_prop(dt_root, "revision", NULL);
> > + if (prop)
> > + system_rev = fdt32_to_cpu(*prop);
> > +
> >
> > return mdesc;
> >
> > }
>
> [snip]

--
Pali Roh?r
pali.rohar at gmail.com
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