Re: [Minios-devel] [UNIKRAFT PATCH V3 6/6] external plat: Add platform interface implementation

["Haibo Xu (Arm Technology China)" <Haibo.Xu@xxxxxxx>]

On 2019/8/25 22:15, Felipe Huici wrote:
> Hi Haibo,
>
> Please see one comment inline (copied and pasted from an earlier email from 
> Simon).
>
> Thanks,
>
> -- Felipe
>
> On 16.08.19, 04:59, "Minios-devel on behalf of Haibo Xu" 
> <minios-devel-bounces@xxxxxxxxxxxxxxxxxxxx on behalf of haibo.xu@xxxxxxx> 
> wrote:
>
>     Signed-off-by: Haibo Xu <haibo.xu@xxxxxxx>
>     ---
>      console.c  | 45 ++++++++++++++++++++++++++++++
>      io.c       | 41 +++++++++++++++++++++++++++
>      irq.c      | 28 +++++++++++++++++++
>      lcpu.c     | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
>      memory.c   | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>      setup.c    | 42 ++++++++++++++++++++++++++++
>      shutdown.c | 37 +++++++++++++++++++++++++
>      time.c     | 56 +++++++++++++++++++++++++++++++++++++
>      8 files changed, 405 insertions(+)
>      create mode 100644 console.c
>      create mode 100644 io.c
>      create mode 100644 irq.c
>      create mode 100644 lcpu.c
>      create mode 100644 memory.c
>      create mode 100644 setup.c
>      create mode 100644 shutdown.c
>      create mode 100644 time.c
>
>     diff --git a/memory.c b/memory.c
>     new file mode 100644
>     index 0000000..b266f09
>     --- /dev/null
>     +++ b/memory.c
>     @@ -0,0 +1,81 @@
>     +/* SPDX-License-Identifier: BSD-3-Clause */
>     +/*
>     + * Authors: Haibo Xu <haibo.xu@xxxxxxx>
>     + *
>     + * Copyright (c) 2018, Arm Ltd. All rights reserved.
>     + *
>     + * Redistribution and use in source and binary forms, with or without
>     + * modification, are permitted provided that the following conditions
>     + * are met:
>     + *
>     + * 1. Redistributions of source code must retain the above copyright
>     + *    notice, this list of conditions and the following disclaimer.
>     + * 2. Redistributions in binary form must reproduce the above copyright
>     + *    notice, this list of conditions and the following disclaimer in the
>     + *    documentation and/or other materials provided with the 
> distribution.
>     + * 3. Neither the name of the copyright holder nor the names of its
>     + *    contributors may be used to endorse or promote products derived 
> from
>     + *    this software without specific prior written permission.
>     + *
>     + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
> "AS IS"
>     + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
> THE
>     + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
> PURPOSE
>     + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
> CONTRIBUTORS BE
>     + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>     + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>     + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 
> BUSINESS
>     + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
> IN
>     + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
> OTHERWISE)
>     + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
> OF THE
>     + * POSSIBILITY OF SUCH DAMAGE.
>     + *
>     + * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
>     + */
>     +
>     +#include <solo5/setup.h>
>     +#include <uk/plat/memory.h>
>     +#include <uk/assert.h>
>     +
>     +int ukplat_memregion_count(void)
>     +{
>     + return _libsolo5plat_opts.heap.base ? 1 : 0;
>
> Do you know if Solo5 supports also something like an initrd? If yes,
> could you add the support for this, too
As far as I know, the Solo5 current doesn't support this. It only provide
a interface to share the heap info(base address and size).

>
>     +}
>     +
>     +/* Can only get the heap info from solo5 tender */
>     +int ukplat_memregion_get(int i, struct ukplat_memregion_desc *m)
>     +{
>     + int ret;
>     +
>     + UK_ASSERT(m);
>     +
>     + if (i == 0 && _libsolo5plat_opts.heap.base) {
>     +         m->base  = _libsolo5plat_opts.heap.base;
>     +         m->len   = _libsolo5plat_opts.heap.len;
>     +         m->flags = UKPLAT_MEMRF_ALLOCATABLE;
>     +#if CONFIG_UKPLAT_MEMRNAME
>     +         m->name  = "heap";
>     +#endif
>     +         ret = 0;
>     + } else {
>     +         /* invalid memory region index or no heap allocated */
>     +         m->base  = __NULL;
>     +         m->len   = 0;
>     +         m->flags = 0x0;
>     +#if CONFIG_UKPLAT_MEMRNAME
>     +         m->name  = __NULL;
>     +#endif
>     +         ret = -1;
>     + }
>     +
>     + return ret;
>     +}
>     +
>     +int ukplat_memallocator_set(struct uk_alloc *a __unused)
>     +{
>     + return 0;
>     +}
>     +
>     +struct uk_alloc *ukplat_memallocator_get(void)
>     +{
>     + return __NULL;
>     +}
>     --
>     2.17.1
>
>
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