1 files changed, 91 insertions, 0 deletions
diff --git a/util/e6400-flash-unlock/accessors.c b/util/e6400-flash-unlock/accessors.c
new file mode 100644
index 00000000..6fca2817
--- /dev/null
+++ b/util/e6400-flash-unlock/accessors.c
@@ -0,0 +1,91 @@
+/* SPDX-License-Identifier: MIT */
+/* SPDX-FileCopyrightText: 2023 Nicholas Chin */
+
+#if defined(__linux__)
+#include <sys/io.h>
+#endif
+
+#if defined(__OpenBSD__)
+#include <machine/sysarch.h>
+#include <sys/types.h>
+#if defined(__amd64__)
+#include <amd64/pio.h>
+#elif defined(__i386__)
+#include <i386/pio.h>
+#endif /* __i386__ */
+#endif /* __OpenBSD__ */
+
+#include <errno.h>
+
+#include "accessors.h"
+
+uint32_t
+pci_read_32(uint32_t dev, uint8_t reg)
+{
+	sys_outl(PCI_CFG_ADDR, dev | reg);
+	return sys_inl(PCI_CFG_DATA);
+}
+
+void
+pci_write_32(uint32_t dev, uint8_t reg, uint32_t value)
+{
+	sys_outl(PCI_CFG_ADDR, dev | reg);
+	sys_outl(PCI_CFG_DATA, value);
+}
+
+void
+sys_outb(unsigned int port, uint8_t data)
+{
+	#if defined(__linux__)
+	outb(data, port);
+	#endif
+	#if defined(__OpenBSD__)
+	outb(port, data);
+	#endif
+}
+
+void
+sys_outl(unsigned int port, uint32_t data)
+{
+	#if defined(__linux__)
+	outl(data, port);
+	#endif
+	#if defined(__OpenBSD__)
+	outl(port, data);
+	#endif
+}
+
+uint8_t
+sys_inb(unsigned int port)
+{
+	#if defined(__linux__) || defined (__OpenBSD__)
+	return inb(port);
+	#endif
+	return 0;
+}
+
+uint32_t
+sys_inl(unsigned int port)
+{
+	#if defined(__linux__) || defined (__OpenBSD__)
+	return inl(port);
+	#endif
+	return 0;
+}
+
+int
+sys_iopl(int level)
+{
+#if defined(__linux__)
+	return iopl(level);
+#endif
+#if defined(__OpenBSD__)
+#if defined(__i386__)
+	return i386_iopl(level);
+#elif defined(__amd64__)
+	return amd64_iopl(level);
+#endif /* __amd64__ */
+#endif /* __OpenBSD__ */
+	errno = ENOSYS;
+	return -1;
+}