The FDT specification [0] gives a requirement of aligning properties on 32-bits. Make sure that the compiler is aware of this constraint when accessing 64-bits properties.

[0]: https://github.com/devicetree-org/devicetree-specification/blob/master/sourc...

Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com --- common/fdt_support.c | 2 +- drivers/core/ofnode.c | 2 +- lib/fdtdec.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/common/fdt_support.c b/common/fdt_support.c index baf7924ff6..d14cf7f61a 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -1566,7 +1566,7 @@ static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, uint64_t *val, int cells) { const fdt32_t *prop32 = &prop[cell_off]; - const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off]; + const fdt64_t *prop64 __aligned(4) = (const fdt64_t *)&prop[cell_off];

if ((cell_off + cells) > prop_len) return -FDT_ERR_NOSPACE; diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 297f0a0c7c..6bd4235029 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -57,7 +57,7 @@ int ofnode_read_s32_default(ofnode node, const char *propname, s32 def)

int ofnode_read_u64(ofnode node, const char *propname, u64 *outp) { - const fdt64_t *cell; + const fdt64_t *cell __aligned(4); int len;

assert(ofnode_valid(node)); diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 17736ce665..77a54b6433 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -242,7 +242,7 @@ int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr, uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, uint64_t default_val) { - const uint64_t *cell64; + const uint64_t *cell64 __aligned(4); int length;

cell64 = fdt_getprop(blob, node, prop_name, &length);