Hello Masahiro-san,
On Fri, 2016-10-21 at 10:58 +0900, Masahiro Yamada wrote:
Hi Alexey,
2016-10-20 20:55 GMT+09:00 Alexey Brodkin Alexey.Brodkin@synopsys.com:
Hello Masahiro-san,
On Thu, 2016-10-20 at 09:15 +0900, Masahiro Yamada wrote:
Commit e2f88dfd2d96 ("libfdt: Introduce new ARCH_FIXUP_FDT option") allows us to skip memory setup of DTB, but a problem for ARM is that spin_table_update_dt() and psci_update_dt() are skipped as well if CONFIG_ARCH_FIXUP_FDT is disabled.
This commit allows us to skip only fdt_fixup_memory_banks() instead of the whole of arch_fixup_fdt(). It will be useful when we want to use a memory node from a kernel DTB as is, but need some fixups for Spin-Table/PSCI.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com
Changes in v2: - Add empty stub to ARC, PowerPC, Microblaze instead of a weak function common/image-fdt.c
[snip]
diff --git a/arch/arc/lib/bootm.c b/arch/arc/lib/bootm.c index 04d9d9c..5798149 100644 --- a/arch/arc/lib/bootm.c +++ b/arch/arc/lib/bootm.c @@ -37,6 +37,11 @@ void arch_lmb_reserve(struct lmb *lmb) lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp)); }
+int arch_fixup_fdt(void *blob) +{ + return 0; +}
I'm wondering why don't we add weak implementation of arch_fixup_fdt() right in say common/image-fdt.c? This will allow us to not add dummy stubs for those arches that don't really use it.
I fully agree with you.
I used a weak function in v1: http://patchwork.ozlabs.org/patch/678049/
But, it was change-request'ed by Simon.
Ok, thanks for the reference. Indeed Simon's comments make sense.
So for ARC changes
Acked-by: Alexey Brodkin abrodkin@synopsys.com