[PATCH] bsp/beagle: Add nocache section

[Gedare Bloom]

Actually, this could probably use a ticket associated with it...

On Wed, Aug 7, 2019 at 9:58 AM Gedare Bloom <gedare at rtems.org> wrote:
>
> This looks good to me, Christian please push it if happy.
>
> On Fri, Aug 2, 2019 at 2:57 PM Vijay Kumar Banerjee
> <vijaykumar9597 at gmail.com> wrote:
> >
> > ---
> >  bsps/arm/beagle/start/bspstart.c      | 5 +++++
> >  bsps/arm/beagle/start/linkcmds.beagle | 7 ++++---
> >  2 files changed, 9 insertions(+), 3 deletions(-)
> >
> > diff --git a/bsps/arm/beagle/start/bspstart.c b/bsps/arm/beagle/start/bspstart.c
> > index 47db5cc529..224f9ecf3b 100644
> > --- a/bsps/arm/beagle/start/bspstart.c
> > +++ b/bsps/arm/beagle/start/bspstart.c
> > @@ -16,6 +16,7 @@
> >  #include <bsp/bootcard.h>
> >  #include <bsp/irq-generic.h>
> >  #include <bsp/fdt.h>
> > +#include <bsp/linker-symbols.h>
> >
> >  #include "bspdebug.h"
> >
> > @@ -30,6 +31,10 @@ void bsp_start(void)
> >    bsp_interrupt_initialize();
> >    printk("\nRTEMS Beagleboard: %s\n", type);
> >    printk("        ARM Debug: 0x%08x\n", (intptr_t) bbb_arm_debug_registers());
> > +  rtems_cache_coherent_add_area(
> > +      bsp_section_nocacheheap_begin,
> > +      (uintptr_t) bsp_section_nocacheheap_size
> > +  );
> >  }
> >
> >  uint32_t bsp_fdt_map_intr(const uint32_t *intr, size_t icells)
> > diff --git a/bsps/arm/beagle/start/linkcmds.beagle b/bsps/arm/beagle/start/linkcmds.beagle
> > index 5ecd221e6c..bb4047e28e 100644
> > --- a/bsps/arm/beagle/start/linkcmds.beagle
> > +++ b/bsps/arm/beagle/start/linkcmds.beagle
> > @@ -11,7 +11,8 @@ MEMORY {
> >     * have either 256M or 512M memory. We just
> >     * use 256M for all.
> >     */
> > -  RAM      : ORIGIN = 0x80000000, LENGTH = 256M - 4M
> > +  RAM      : ORIGIN = 0x80000000, LENGTH = 256M - 16M - 4M
> > +  NOCACHE  : ORIGIN = 0x80000000 + 256M - 16M - 4M, LENGTH = 16M
> >    RAM_MMU  : ORIGIN = 0x80000000 + 256M - 4M, LENGTH = 16k
> >  }
> >
> > @@ -30,8 +31,8 @@ REGION_ALIAS ("REGION_FAST_DATA_LOAD", RAM);
> >  REGION_ALIAS ("REGION_BSS",            RAM);
> >  REGION_ALIAS ("REGION_WORK",           RAM);
> >  REGION_ALIAS ("REGION_STACK",          RAM);
> > -REGION_ALIAS ("REGION_NOCACHE",        RAM);
> > -REGION_ALIAS ("REGION_NOCACHE_LOAD",   RAM);
> > +REGION_ALIAS ("REGION_NOCACHE",        NOCACHE);
> > +REGION_ALIAS ("REGION_NOCACHE_LOAD",   NOCACHE);
> >
> >  bsp_stack_abt_size = DEFINED (bsp_stack_abt_size) ? bsp_stack_abt_size : 1024;
> >
> > --
> > 2.20.1
> >
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