From ffa710b9dd241cc7545858a2ac69f7cdb214cddf Mon Sep 17 00:00:00 2001
From: Balazs Vinarz <vinibali1@gmail.com>
Date: Fri, 18 Jan 2019 10:53:13 +0100
Subject: mb/asus: Add Asus A88XM-E FM2+ with documentation

The port is based on the F2A85-M, the main differences are:
- 2 DDR3 dimms
- 2 PS/2 ports
- 2*USB2.0 and 2*USB3.0 ports
- 3+2 phase VRM
- 6 channel audio
- 6 SATA ports
- ASP1206 VRM controller
- Bolton D4 chipset
- no optical SPDIF/IO

Successfully booted configurations:
-RAM: 2*8GB Kingston KVR 1333Mhz LP, 2*8GB Crucial BLT8G3D1869DT1TX0
-CPU: AMD A8-6500 (Richland), AMD A10-6700 (Richland)
-OS:  Arch Linux 4.19 (SATA, USB), Linux Mint 19.3, Artix Linux 2019
-SeaBIOS: 1.12 and 1.13

Known problems:
- IRQ routing is done incorrect way - common problem of fam15h boards
- Windows 7 can't boot because of the incomplete ACPI implementation

Change-Id: I60fa0636ba41f5f1a6a3faa2764bf2f0a968cf90
Signed-off-by: Balazs Vinarz <vinibali1@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30987
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/asus/a88xm-e/romstage.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/mainboard/asus/a88xm-e/romstage.c

(limited to 'src/mainboard/asus/a88xm-e/romstage.c')

diff --git a/src/mainboard/asus/a88xm-e/romstage.c b/src/mainboard/asus/a88xm-e/romstage.c
new file mode 100644
index 0000000000..c9ba041d03
--- /dev/null
+++ b/src/mainboard/asus/a88xm-e/romstage.c
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/acpimmio.h>
+#include <arch/io.h>
+#include <northbridge/amd/agesa/state_machine.h>
+#include <southbridge/amd/agesa/hudson/smbus.h>
+
+static void smbus_setup(void)
+{
+	post_code(0x30);
+
+	/* turn on secondary smbus at b20 */
+	pm_write8(0x28, pm_read8(0x28) | 0x01);
+}
+
+void board_BeforeAgesa(struct sysinfo *cb)
+{
+	smbus_setup();
+}
-- 
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