From 4f253ad064689bc55eaba1c3e7d42f0f358a72c3 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 21 Mar 2019 19:10:00 +0100 Subject: fdtdec: Add fdt_{addr, size}_unpack() helpers These helpers can be used to unpack variables of type fdt_addr_t and fdt_size_t into a pair of 32-bit variables. This is useful in cases where such variables need to be written to properties (such as "reg") of a device tree node where they need to be split into cells. Signed-off-by: Thierry Reding --- include/fdtdec.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/fdtdec.h b/include/fdtdec.h index be34dca756..3f7538734a 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -23,6 +23,31 @@ */ typedef phys_addr_t fdt_addr_t; typedef phys_size_t fdt_size_t; + +static inline fdt32_t fdt_addr_unpack(fdt_addr_t addr, fdt32_t *upper) +{ + if (upper) +#ifdef CONFIG_PHYS_64BIT + *upper = addr >> 32; +#else + *upper = 0; +#endif + + return addr; +} + +static inline fdt32_t fdt_size_unpack(fdt_size_t size, fdt32_t *upper) +{ + if (upper) +#ifdef CONFIG_PHYS_64BIT + *upper = size >> 32; +#else + *upper = 0; +#endif + + return size; +} + #ifdef CONFIG_PHYS_64BIT #define FDT_ADDR_T_NONE (-1U) #define fdt_addr_to_cpu(reg) be64_to_cpu(reg) -- cgit