From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann <daniel.baumann@progress-linux.org> Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org> --- arch/sparc/prom/console_64.c | 46 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 arch/sparc/prom/console_64.c (limited to 'arch/sparc/prom/console_64.c') diff --git a/arch/sparc/prom/console_64.c b/arch/sparc/prom/console_64.c new file mode 100644 index 000000000..86dace787 --- /dev/null +++ b/arch/sparc/prom/console_64.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +/* console.c: Routines that deal with sending and receiving IO + * to/from the current console device using the PROM. + * + * Copyright (C) 1995 David S. Miller (davem@davemloft.net) + * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <asm/openprom.h> +#include <asm/oplib.h> +#include <linux/string.h> + +static int __prom_console_write_buf(const char *buf, int len) +{ + unsigned long args[7]; + int ret; + + args[0] = (unsigned long) "write"; + args[1] = 3; + args[2] = 1; + args[3] = (unsigned int) prom_stdout; + args[4] = (unsigned long) buf; + args[5] = (unsigned int) len; + args[6] = (unsigned long) -1; + + p1275_cmd_direct(args); + + ret = (int) args[6]; + if (ret < 0) + return -1; + return ret; +} + +void prom_console_write_buf(const char *buf, int len) +{ + while (len) { + int n = __prom_console_write_buf(buf, len); + if (n < 0) + continue; + len -= n; + buf += len; + } +} -- cgit v1.2.3