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| author | Bin Meng <bmeng@tinylab.org> | 2022-12-09 23:04:35 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-19 14:58:19 +0100 |
| commit | 8890717526c8e13801f7e866329a2bfce3a62240 (patch) | |
| tree | 7f35fa7623aca392b44cc4460e93fb0de1ec342a /drivers/tty/serial | |
| parent | 41000b03af9e15075061cdbeea461cfa5e12a8eb (diff) | |
| download | linux-stable-8890717526c8e13801f7e866329a2bfce3a62240.tar.gz linux-stable-8890717526c8e13801f7e866329a2bfce3a62240.tar.bz2 linux-stable-8890717526c8e13801f7e866329a2bfce3a62240.zip | |
serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h
Move smh_putc() variants in respective arch/*/include/asm/semihost.h,
in preparation to add RISC-V support.
Signed-off-by: Bin Meng <bmeng@tinylab.org>
Tested-by: Sergey Matyukevich <sergey.matyukevich@syntacore.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20221209150437.795918-2-bmeng@tinylab.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/earlycon-arm-semihost.c | 25 |
1 files changed, 1 insertions, 24 deletions
diff --git a/drivers/tty/serial/earlycon-arm-semihost.c b/drivers/tty/serial/earlycon-arm-semihost.c index fcdec5f42376..e4692a8433f9 100644 --- a/drivers/tty/serial/earlycon-arm-semihost.c +++ b/drivers/tty/serial/earlycon-arm-semihost.c @@ -11,30 +11,7 @@ #include <linux/console.h> #include <linux/init.h> #include <linux/serial_core.h> - -#ifdef CONFIG_THUMB2_KERNEL -#define SEMIHOST_SWI "0xab" -#else -#define SEMIHOST_SWI "0x123456" -#endif - -/* - * Semihosting-based debug console - */ -static void smh_putc(struct uart_port *port, unsigned char c) -{ -#ifdef CONFIG_ARM64 - asm volatile("mov x1, %0\n" - "mov x0, #3\n" - "hlt 0xf000\n" - : : "r" (&c) : "x0", "x1", "memory"); -#else - asm volatile("mov r1, %0\n" - "mov r0, #3\n" - "svc " SEMIHOST_SWI "\n" - : : "r" (&c) : "r0", "r1", "memory"); -#endif -} +#include <asm/semihost.h> static void smh_write(struct console *con, const char *s, unsigned n) { |