From e119ffa54d32bba49ab16db565680a0e386cdeb6 Mon Sep 17 00:00:00 2001
From: linear cannon <dev@linear.network>
Date: Sat, 16 Mar 2024 01:33:10 -0400
Subject: dell-flash-unlock: add NetBSD support

---
 util/dell-flash-unlock/Makefile    |  3 +++
 util/dell-flash-unlock/README.md   |  4 ++--
 util/dell-flash-unlock/accessors.c | 32 +++++++++++++++++++++++++++++---
 3 files changed, 34 insertions(+), 5 deletions(-)

(limited to 'util')

diff --git a/util/dell-flash-unlock/Makefile b/util/dell-flash-unlock/Makefile
index fae52dea..aee07167 100644
--- a/util/dell-flash-unlock/Makefile
+++ b/util/dell-flash-unlock/Makefile
@@ -6,6 +6,9 @@ CFLAGS=-Wall -Wextra -Werror -O2 -pedantic
 ifeq ($(shell uname), OpenBSD)
 	CFLAGS += -l$(shell uname -p)
 endif
+ifeq ($(shell uname), NetBSD)
+	CFLAGS += -l$(shell uname -p)
+endif
 SRCS=dell_flash_unlock.c accessors.c
 
 all: $(SRCS) accessors.h
diff --git a/util/dell-flash-unlock/README.md b/util/dell-flash-unlock/README.md
index 9c7d292c..aca01743 100644
--- a/util/dell-flash-unlock/README.md
+++ b/util/dell-flash-unlock/README.md
@@ -20,8 +20,8 @@ around 2008 (E6400 era).
   If it says it is not set, then you will need to install or compile a kernel
   with that option set.
 
-### OpenBSD
-- On OpenBSD, ensure you are booting with securelevel set to -1.
+### OpenBSD/NetBSD
+- On OpenBSD/NetBSD, ensure you are booting with securelevel set to -1.
 
 ### General
 Make sure an AC adapter is plugged into your system
diff --git a/util/dell-flash-unlock/accessors.c b/util/dell-flash-unlock/accessors.c
index 6fca2817..a35f8139 100644
--- a/util/dell-flash-unlock/accessors.c
+++ b/util/dell-flash-unlock/accessors.c
@@ -5,15 +5,15 @@
 #include <sys/io.h>
 #endif
 
-#if defined(__OpenBSD__)
-#include <machine/sysarch.h>
+#if defined(__OpenBSD__) || defined(__NetBSD__)
 #include <sys/types.h>
+#include <machine/sysarch.h>
 #if defined(__amd64__)
 #include <amd64/pio.h>
 #elif defined(__i386__)
 #include <i386/pio.h>
 #endif /* __i386__ */
-#endif /* __OpenBSD__ */
+#endif /* __OpenBSD__ || __NetBSD__ */
 
 #include <errno.h>
 
@@ -42,6 +42,9 @@ sys_outb(unsigned int port, uint8_t data)
 	#if defined(__OpenBSD__)
 	outb(port, data);
 	#endif
+	#if defined(__NetBSD__)
+	__asm__ volatile ( "outb %b0, %w1" : : "a"(data), "d"(port) : "memory");
+	#endif
 }
 
 void
@@ -53,6 +56,9 @@ sys_outl(unsigned int port, uint32_t data)
 	#if defined(__OpenBSD__)
 	outl(port, data);
 	#endif
+	#if defined(__NetBSD__)
+	__asm__ volatile ( "outl %0, %w1" : : "a"(data), "d"(port) : "memory");
+	#endif
 }
 
 uint8_t
@@ -61,6 +67,12 @@ sys_inb(unsigned int port)
 	#if defined(__linux__) || defined (__OpenBSD__)
 	return inb(port);
 	#endif
+
+	#if defined(__NetBSD__)
+	uint8_t retval;
+	__asm__ volatile("inb %w1, %b0" : "=a" (retval) : "d" (port) : "memory");
+	return retval;
+	#endif
 	return 0;
 }
 
@@ -70,6 +82,11 @@ sys_inl(unsigned int port)
 	#if defined(__linux__) || defined (__OpenBSD__)
 	return inl(port);
 	#endif
+	#if defined(__NetBSD__)
+	int retval;
+	__asm__ volatile("inl %w1, %0" : "=a" (retval) : "d" (port) : "memory");
+	return retval;
+	#endif
 	return 0;
 }
 
@@ -86,6 +103,15 @@ sys_iopl(int level)
 	return amd64_iopl(level);
 #endif /* __amd64__ */
 #endif /* __OpenBSD__ */
+
+#if defined(__NetBSD__)
+#if defined(__i386__)
+	return i386_iopl(level);
+#elif defined(__amd64__)
+	return x86_64_iopl(level);
+#endif /* __amd64__ */
+#endif /* __NetBSD__ */
+
 	errno = ENOSYS;
 	return -1;
 }
-- 
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