1 files changed, 84 insertions, 0 deletions
diff --git a/src/arch/i386/include/arch/romcc_io.h b/src/arch/i386/include/arch/romcc_io.h
new file mode 100644
index 0000000000..02cc272884
--- /dev/null
+++ b/src/arch/i386/include/arch/romcc_io.h
@@ -0,0 +1,84 @@
+static void outb(unsigned char value, unsigned short port)
+{
+	__builtin_outb(value, port);
+}
+
+static void outw(unsigned short value, unsigned short port)
+{
+	__builtin_outw(value, port);
+}
+
+static void outl(unsigned int value, unsigned short port)
+{
+	__builtin_outl(value, port);
+}
+
+
+static unsigned char inb(unsigned short port)
+{
+	return __builtin_inb(port);
+}
+
+
+static unsigned char inw(unsigned short port)
+{
+	return __builtin_inw(port);
+}
+
+static unsigned char inl(unsigned short port)
+{
+	return __builtin_inl(port);
+}
+
+static void hlt(void)
+{
+	__builtin_hlt();
+}
+
+static unsigned int config_cmd(unsigned char bus, unsigned devfn, unsigned where)
+{
+	return 0x80000000 | (bus << 16) | (devfn << 8) | (where & ~3);
+}
+
+static unsigned char pcibios_read_config_byte(
+	unsigned char bus, unsigned devfn, unsigned where)
+{
+	outl(config_cmd(bus, devfn, where), 0xCF8);
+	return inb(0xCFC + (where & 3));
+}
+
+static unsigned short pcibios_read_config_word(
+	unsigned char bus, unsigned devfn, unsigned where)
+{
+	outl(config_cmd(bus, devfn, where), 0xCF8);
+	return inw(0xCFC + (where & 2));
+}
+
+static unsigned int pcibios_read_config_dword(
+	unsigned char bus, unsigned devfn, unsigned where)
+{
+	outl(config_cmd(bus, devfn, where), 0xCF8);
+	return inl(0xCFC);
+}
+
+
+static void pcibios_write_config_byte(
+	unsigned char bus, unsigned devfn, unsigned where, unsigned char value)
+{
+	outl(config_cmd(bus, devfn, where), 0xCF8);
+	outb(value, 0xCFC + (where & 3));
+}
+
+static void pcibios_write_config_word(
+	unsigned char bus, unsigned devfn, unsigned where, unsigned short value)
+{
+	outl(config_cmd(bus, devfn, where), 0xCF8);
+	outw(value, 0xCFC + (where & 2));
+}
+
+static void pcibios_write_config_dword(
+	unsigned char bus, unsigned devfn, unsigned where, unsigned int value)
+{
+	outl(config_cmd(bus, devfn, where), 0xCF8);
+	outl(value, 0xCFC);
+}