Re: [PATCH v5 3/8] remoteproc: Use u64 type for boot_addr

Bjorn Andersson
2020-03-10T19:32:59Z

On Tue 10 Mar 00:59 PDT 2020, Cl?ment Leger wrote:

>
>
> ----- On 9 Mar, 2020, at 20:52, Mathieu Poirier mathieu.poirier@linaro.org wrote:
>
> > On Mon, Mar 02, 2020 at 10:38:57AM +0100, Clement Leger wrote:
> >> elf64 entry is defined as a u64. Since boot_addr is used to store the
> >> elf entry point, change boot_addr type to u64 to support both elf32
> >> and elf64. In the same time, fix users that were using this variable.
> >>
> >> Signed-off-by: Clement Leger <cleger@kalray.eu>
> >> ---
> >> drivers/remoteproc/remoteproc_elf_loader.c | 2 +-
> >> drivers/remoteproc/remoteproc_internal.h | 2 +-
> >> drivers/remoteproc/st_remoteproc.c | 2 +-
> >> include/linux/remoteproc.h | 4 ++--
> >> 4 files changed, 5 insertions(+), 5 deletions(-)
> >>
> >> diff --git a/drivers/remoteproc/remoteproc_elf_loader.c
> >> b/drivers/remoteproc/remoteproc_elf_loader.c
> >> index 606aae166eba..c2a9783cfb9a 100644
> >> --- a/drivers/remoteproc/remoteproc_elf_loader.c
> >> +++ b/drivers/remoteproc/remoteproc_elf_loader.c
> >> @@ -102,7 +102,7 @@ EXPORT_SYMBOL(rproc_elf_sanity_check);
> >> * Note that the boot address is not a configurable property of all remote
> >> * processors. Some will always boot at a specific hard-coded address.
> >> */
> >> -u32 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
> >> +u64 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
> >> {
> >> struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data;
> >>
> >> diff --git a/drivers/remoteproc/remoteproc_internal.h
> >> b/drivers/remoteproc/remoteproc_internal.h
> >> index 58580210575c..0deae5f237b8 100644
> >> --- a/drivers/remoteproc/remoteproc_internal.h
> >> +++ b/drivers/remoteproc/remoteproc_internal.h
> >> @@ -55,7 +55,7 @@ phys_addr_t rproc_va_to_pa(void *cpu_addr);
> >> int rproc_trigger_recovery(struct rproc *rproc);
> >>
> >> int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw);
> >> -u32 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw);
> >> +u64 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw);
> >> int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw);
> >> int rproc_elf_load_rsc_table(struct rproc *rproc, const struct firmware *fw);
> >> struct resource_table *rproc_elf_find_loaded_rsc_table(struct rproc *rproc,
> >
> > The return type of function rproc_get_boot_addr() should also be changed from
> > u32 to u64. Or perhaps this is intentional to make sure rproc->bootaddr never
> > occupies more than 32bit?
>
> No, this is a mistake clearly. I haven't been able to test with a 64 bit
> boot address since our remote processors always boot in the 32 bits
> space. But since the elf64 boot address is on 64 bitsn this was a logical
> modification. I will fix that.
>

Sorry, I forgot to reply to this one. I fixed it up while applying the
patch.

Thanks,
Bjorn

> >
> >> diff --git a/drivers/remoteproc/st_remoteproc.c
> >> b/drivers/remoteproc/st_remoteproc.c
> >> index ee13d23b43a9..a3268d95a50e 100644
> >> --- a/drivers/remoteproc/st_remoteproc.c
> >> +++ b/drivers/remoteproc/st_remoteproc.c
> >> @@ -190,7 +190,7 @@ static int st_rproc_start(struct rproc *rproc)
> >> }
> >> }
> >>
> >> - dev_info(&rproc->dev, "Started from 0x%x\n", rproc->bootaddr);
> >> + dev_info(&rproc->dev, "Started from 0x%llx\n", rproc->bootaddr);
> >>
> >> return 0;
> >>
> >> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> >> index bee559330204..1683d6c386a6 100644
> >> --- a/include/linux/remoteproc.h
> >> +++ b/include/linux/remoteproc.h
> >> @@ -382,7 +382,7 @@ struct rproc_ops {
> >> struct rproc *rproc, const struct firmware *fw);
> >> int (*load)(struct rproc *rproc, const struct firmware *fw);
> >> int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
> >> - u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
> >> + u64 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
> >> };
> >>
> >> /**
> >> @@ -498,7 +498,7 @@ struct rproc {
> >> int num_traces;
> >> struct list_head carveouts;
> >> struct list_head mappings;
> >> - u32 bootaddr;
> >> + u64 bootaddr;
> >> struct list_head rvdevs;
> >> struct list_head subdevs;
> >> struct idr notifyids;
> >> --
> >> 2.15.0.276.g89ea799