Date: Sat, 10 Nov 2012 12:25:27 +0000 (UTC) From: Takahashi Yoshihiro <nyan@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r242863 - in head/sys/boot/pc98: boot2 btx/btx Message-ID: <201211101225.qAACPRYP006845@svn.freebsd.org>
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Author: nyan Date: Sat Nov 10 12:25:27 2012 New Revision: 242863 URL: http://svnweb.freebsd.org/changeset/base/242863 Log: MFi386: r241301 add detection of serial console presence to btx and boot2-like blocks Modified: head/sys/boot/pc98/boot2/boot2.c head/sys/boot/pc98/btx/btx/btx.S Modified: head/sys/boot/pc98/boot2/boot2.c ============================================================================== --- head/sys/boot/pc98/boot2/boot2.c Sat Nov 10 12:22:26 2012 (r242862) +++ head/sys/boot/pc98/boot2/boot2.c Sat Nov 10 12:25:27 2012 (r242863) @@ -554,8 +554,10 @@ parse() } ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; - if (ioctrl & IO_SERIAL) - sio_init(115200 / comspeed); + if (ioctrl & IO_SERIAL) { + if (sio_init(115200 / comspeed) != 0) + ioctrl &= ~IO_SERIAL; + } } else { for (q = arg--; *q && *q != '('; q++); if (*q) { Modified: head/sys/boot/pc98/btx/btx/btx.S ============================================================================== --- head/sys/boot/pc98/btx/btx/btx.S Sat Nov 10 12:22:26 2012 (r242862) +++ head/sys/boot/pc98/btx/btx/btx.S Sat Nov 10 12:25:27 2012 (r242863) @@ -840,7 +840,7 @@ putstr: lodsb # Load char .set SIO_DIV,(115200/SIOSPD) # 115200 / SPD /* - * void sio_init(void) + * int sio_init(void) */ sio_init: movw $SIO_PRT+0x3,%dx # Data format reg movb $SIO_FMT|0x80,%al # Set format @@ -856,14 +856,19 @@ sio_init: movw $SIO_PRT+0x3,%dx # Data movb $0x3,%al # Set RTS, outb %al,(%dx) # DTR incl %edx # Line status reg + call sio_getc.1 # Get character /* - * void sio_flush(void) + * int sio_flush(void) */ -sio_flush.0: call sio_getc.1 # Get character -sio_flush: call sio_ischar # Check for character - jnz sio_flush.0 # Till none - ret # To caller +sio_flush: xorl %eax,%eax # Return value + xorl %ecx,%ecx # Timeout + movb $0x80,%ch # counter +sio_flush.1: call sio_ischar # Check for character + jz sio_flush.2 # Till none + loop sio_flush.1 # or counter is zero + movb $1, %al # Exhausted all tries +sio_flush.2: ret # To caller /* * void sio_putc(int c)
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