mb/ocp/monolake: add TPM and IPMI support

Changes includes:

- enable TPM1 + add entry in devicetree
- configure LPC IO to make IPMI work + add entry in devicetree
- introduce DSDT and SMBIOS entries for IPMI to make it detectable
  by ipmi_si driver

Signed-off-by: Lukasz Siudut <lsiudut@fb.com>
Change-Id: Ia975643064075f1f861f4ead6f24ed71f345ea04
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32443
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/mainboard/ocp/monolake/mainboard.c b/src/mainboard/ocp/monolake/mainboard.c
index 93c2a58f74..d457859d44 100644
--- a/src/mainboard/ocp/monolake/mainboard.c
+++ b/src/mainboard/ocp/monolake/mainboard.c
@@ -15,17 +15,51 @@
  */
 
 #include <device/device.h>
+#include <smbios.h>
 #if CONFIG(VGA_ROM_RUN)
 #include <x86emu/x86emu.h>
 #endif
 
+#define BMC_KCS_BASE 0xca2
+#define INTERFACE_IS_IO 0x1
+
+#if IS_ENABLED(CONFIG_GENERATE_SMBIOS_TABLES)
+static int mainboard_smbios_data(struct device *dev, int *handle,
+				 unsigned long *current)
+{
+	int len = 0;
+
+	// add IPMI Device Information
+	len += smbios_write_type38(
+		current, handle,
+		SMBIOS_BMC_INTERFACE_KCS,
+		0x20,				// IPMI Version
+		0x20,				// I2C address
+		0xff,				// no NV storage
+		BMC_KCS_BASE | INTERFACE_IS_IO, // IO port interface address
+		0x40,
+		0); // no IRQ
+
+	return len;
+}
+#endif
+
 /*
  * mainboard_enable is executed as first thing after enumerate_buses().
  * This is the earliest point to add customization.
  */
 static void mainboard_enable(struct device *dev)
 {
+#if IS_ENABLED(CONFIG_GENERATE_SMBIOS_TABLES)
+	dev->ops->get_smbios_data = mainboard_smbios_data;
+#endif
 
+	/* Enable access to the BMC IPMI via KCS */
+	struct device *lpc_sio_dev = dev_find_slot_pnp(BMC_KCS_BASE, 0);
+	struct resource *res = new_resource(lpc_sio_dev, BMC_KCS_BASE);
+	res->base = BMC_KCS_BASE;
+	res->size = 1;
+	res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
 }
 
 struct chip_operations mainboard_ops = {