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| author | Bin Meng <bmeng.cn@gmail.com> | 2018-10-15 12:21:15 +0300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-11-14 20:16:27 +0300 |
| commit | 2895c4b7d65e1a65f7d8804126f91ee91e8e2481 (patch) | |
| tree | f860e20b97f39bb6c64d85582866c3cdc60f8194 | |
| parent | 440d9a47f7ac442194685845ae2cca90e62cb0fd (diff) | |
| download | u-boot-2895c4b7d65e1a65f7d8804126f91ee91e8e2481.tar.xz | |
kconfig: Introduce HAVE_ARCH_IOMAP
Introduce a new Kconfig option for architecture codes to control
whether it provides io{read,write}{8,16,32} I/O accessor functions.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | include/linux/io.h | 4 | ||||
| -rw-r--r-- | lib/Kconfig | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/io.h b/include/linux/io.h index d1b3efed9d..9badab49b0 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -7,6 +7,7 @@ #include <linux/types.h> #include <asm/io.h> +#ifndef CONFIG_HAVE_ARCH_IOMAP static inline u8 ioread8(const volatile void __iomem *addr) { return readb(addr); @@ -21,6 +22,7 @@ static inline u32 ioread32(const volatile void __iomem *addr) { return readl(addr); } +#endif /* !CONFIG_HAVE_ARCH_IOMAP */ #ifdef CONFIG_64BIT static inline u64 ioread64(const volatile void __iomem *addr) @@ -29,6 +31,7 @@ static inline u64 ioread64(const volatile void __iomem *addr) } #endif /* CONFIG_64BIT */ +#ifndef CONFIG_HAVE_ARCH_IOMAP static inline void iowrite8(u8 value, volatile void __iomem *addr) { writeb(value, addr); @@ -43,6 +46,7 @@ static inline void iowrite32(u32 value, volatile void __iomem *addr) { writel(value, addr); } +#endif /* !CONFIG_HAVE_ARCH_IOMAP */ #ifdef CONFIG_64BIT static inline void iowrite64(u64 value, volatile void __iomem *addr) diff --git a/lib/Kconfig b/lib/Kconfig index ccab426e12..847e797a3a 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -21,6 +21,12 @@ config DYNAMIC_CRC_TABLE Enable this option to calculate entries for CRC tables at runtime. This can be helpful when reducing the size of the build image +config HAVE_ARCH_IOMAP + bool + help + Enable this option if architecture provides io{read,write}{8,16,32} + I/O accessor functions. + config HAVE_PRIVATE_LIBGCC bool |