Commit 56c2dbdabab5 ("imx: bootaux: cleanup code") introduces the following LTO related warning:
" arch/arm/mach-imx/imx_bootaux.c:24:31: warning: type of ‘hostmap’ does not match original declaration [-Wlto-type-mismatch] 24 | const __weak struct rproc_att hostmap[] = { }; | ^ arch/arm/mach-imx/imx8m/soc.c:1590:24: note: array types have different bounds 1590 | const struct rproc_att hostmap[] = { | ^ arch/arm/mach-imx/imx8m/soc.c:1590:24: note: ‘hostmap’ was previously declared here ../aarch64-linux-gnu/bin/ld: warning: u-boot has a LOAD segment with RWX permissions "
This is because the weak empty array of structures "hostmap" is eventually replaced by non-empty array of structures with different number of elements. Fix this by avoiding weak variable size array, instead use a weak function which returns single pointer to the array.
Fixes: 56c2dbdabab5 ("imx: bootaux: cleanup code") Signed-off-by: Marek Vasut marex@denx.de --- Cc: "NXP i.MX U-Boot Team" uboot-imx@nxp.com Cc: Fabio Estevam festevam@gmail.com Cc: Marek Behún kabel@kernel.org Cc: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de --- arch/arm/include/asm/mach-imx/sys_proto.h | 2 ++ arch/arm/mach-imx/imx8m/soc.c | 5 +++++ arch/arm/mach-imx/imx_bootaux.c | 7 +++++-- arch/arm/mach-imx/mx7/soc.c | 5 +++++ 4 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h index dd0d3f29333..27fdc16cd50 100644 --- a/arch/arm/include/asm/mach-imx/sys_proto.h +++ b/arch/arm/include/asm/mach-imx/sys_proto.h @@ -149,6 +149,8 @@ struct rproc_att { u32 size; /* size of reg range */ };
+const struct rproc_att *imx_bootaux_get_hostmap(void); + struct rom_api { u16 ver; u16 tag; diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index a4863281e36..5e92f8143cf 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -1610,4 +1610,9 @@ const struct rproc_att hostmap[] = { { 0x40000000, 0x40000000, 0x80000000 }, { /* sentinel */ } }; + +const struct rproc_att *imx_bootaux_get_hostmap(void) +{ + return hostmap; +} #endif diff --git a/arch/arm/mach-imx/imx_bootaux.c b/arch/arm/mach-imx/imx_bootaux.c index 433c1f80cee..888c53d6901 100644 --- a/arch/arm/mach-imx/imx_bootaux.c +++ b/arch/arm/mach-imx/imx_bootaux.c @@ -21,11 +21,14 @@ #define SRC_M4_REG_OFFSET 0 #endif
-const __weak struct rproc_att hostmap[] = { }; +__weak const struct rproc_att *imx_bootaux_get_hostmap(void) +{ + return NULL; +}
static const struct rproc_att *get_host_mapping(unsigned long auxcore) { - const struct rproc_att *mmap = hostmap; + const struct rproc_att *mmap = imx_bootaux_get_hostmap();
while (mmap && mmap->size) { if (mmap->da <= auxcore && diff --git a/arch/arm/mach-imx/mx7/soc.c b/arch/arm/mach-imx/mx7/soc.c index 02af0d568f2..689dbefe8ee 100644 --- a/arch/arm/mach-imx/mx7/soc.c +++ b/arch/arm/mach-imx/mx7/soc.c @@ -224,6 +224,11 @@ const struct rproc_att hostmap[] = { { 0x80000000, 0x80000000, 0x60000000 }, /* DDRC */ { /* sentinel */ } }; + +const struct rproc_att *imx_bootaux_get_hostmap(void) +{ + return hostmap; +} #endif
#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT)