A driver for the System Management Application Program

Interface (SMAPI) BIOS, which is present on some IBM
Thinkpad models (560, 600, 770 to name a few.)

The SMAPI BIOS provides access to System Information,
System Configuration, and Power Management.

1 files changed, 54 insertions, 0 deletions

diff --git a/sys/i386/bios/smapi_bios.S b/sys/i386/bios/smapi_bios.S
new file mode 100644
index 0000000..2ada5c6
--- /dev/null
+++ b/sys/i386/bios/smapi_bios.S
@@ -0,0 +1,54 @@
+/* $FreeBSD$ */
+
+#include <machine/asmacros.h>
+
+	.data
+smapi32_segment_tmp:	.word	0
+smapi32_offset_tmp:	.long	0
+	.text
+/*
+ * smapi32(input_param, output_param)
+ *	struct smapi_bios_parameter *input_parm;
+ *	struct smapi_bios_parameter *output_parm;
+ */
+ENTRY(smapi32)
+	pushl	%ebp			/* Save frame */
+	movl	%esp,%ebp
+
+	pushl	%ds
+	pushl	0x0c(%ebp)		/* Output Param */
+	pushl	%ds
+	pushl	0x08(%ebp)		/* Input Param */
+
+	movl	$0,%eax			/* Clear EAX (return 0) */
+	movw	%cs,smapi32_segment	/* Save CS */
+	lcall	*(smapi32_offset)
+
+	leave
+	ret
+
+/*
+ * smapi32(offset, segment, input_param, output_param)
+ *	u_int offset;
+ *	u_short segment;
+ *	struct smapi_bios_parameter *input_parm;
+ *	struct smapi_bios_parameter *output_parm;
+ */
+ENTRY(smapi32_new)
+	pushl	%ebp			/* Save frame */
+        movl    0x08(%esp),%ebp
+	movl	%ebp,smapi32_offset_tmp
+	movw	0x0c(%esp),%bp
+	movw	%bp,smapi32_segment_tmp
+
+	pushl	%ds
+	pushl	0x20(%ebp)		/* Output Param */
+	pushl	%ds
+	pushl	0x10(%ebp)		/* Input Param */
+
+	movl	$0,%eax
+	movw	%cs,smapi32_segment_tmp
+	lcall	*(smapi32_offset_tmp)
+
+	leave
+	ret