superio/ite: Add it8528e

* Add support for the SuperIO part of IT8528E
* Based on the IT8528E datasheet and tests on vendor firmware

TODO: Add support for accessing EC space, which should be
implemented in src/ec/ instead, as it's a separate logical unit.

No datasheet is publicy available.

Tested on wedge100s.
The serial works under the OS without CONFIG_CONSOLE_SERIAL.

Change-Id: I72aa756e123d6f99d9ef4fe955c4b7f1be25d547
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/30957
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

5 files changed, 146 insertions, 0 deletions

diff --git a/src/superio/ite/Makefile.inc b/src/superio/ite/Makefile.inc
index e73fd713b2..551abe9a5d 100644
--- a/src/superio/ite/Makefile.inc
+++ b/src/superio/ite/Makefile.inc
@@ -20,6 +20,7 @@ romstage-$(CONFIG_SUPERIO_ITE_COMMON_PRE_RAM) += common/early_serial.c
 ## include generic ite environment controller driver
 ramstage-$(CONFIG_SUPERIO_ITE_ENV_CTRL) += common/env_ctrl.c
 
+subdirs-y += it8528e
 subdirs-y += it8623e
 subdirs-y += it8671f
 subdirs-y += it8712f
diff --git a/src/superio/ite/it8528e/Kconfig b/src/superio/ite/it8528e/Kconfig
new file mode 100644
index 0000000000..86f4048a98
--- /dev/null
+++ b/src/superio/ite/it8528e/Kconfig
@@ -0,0 +1,18 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2019 9Elements GmbH <patrick.rudolph@9elements.com>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+
+config SUPERIO_ITE_IT8528E
+	bool
+	select SUPERIO_ITE_COMMON_PRE_RAM
diff --git a/src/superio/ite/it8528e/Makefile.inc b/src/superio/ite/it8528e/Makefile.inc
new file mode 100644
index 0000000000..deb1bc0108
--- /dev/null
+++ b/src/superio/ite/it8528e/Makefile.inc
@@ -0,0 +1,17 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2019 9Elements GmbH <patrick.rudolph@9elements.com>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+
+ramstage-$(CONFIG_SUPERIO_ITE_IT8528E) += superio.c
diff --git a/src/superio/ite/it8528e/it8528e.h b/src/superio/ite/it8528e/it8528e.h
new file mode 100644
index 0000000000..d9d07d0188
--- /dev/null
+++ b/src/superio/ite/it8528e/it8528e.h
@@ -0,0 +1,37 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019 9Elements GmbH <patrick.rudolph@9elements.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef SUPERIO_ITE_IT8528E_H
+#define SUPERIO_ITE_IT8528E_H
+
+#define IT8528E_SP1  0x01 /* Com1 */
+#define IT8528E_SP2  0x02 /* Com2 */
+#define IT8528E_SWUC 0x04 /* System Wake-Up */
+#define IT8528E_KBCM 0x05 /* PS/2 mouse */
+#define IT8528E_KBCK 0x06 /* PS/2 keyboard */
+#define IT8528E_IR   0x0a /* Consumer IR */
+#define IT8528E_SMFI 0x0f /* Shared Memory/Flash Interface */
+#define IT8528E_RTCT 0x10 /* RTC-like Timer */
+#define IT8528E_PMC1 0x11 /* Power Management Channel 1 */
+#define IT8528E_PMC2 0x12 /* Power Management Channel 2 */
+#define IT8528E_SSPI 0x13 /* Serial Periphial Interface */
+#define IT8528E_PECI 0x14 /* Platform EC Interface */
+#define IT8528E_PMC3 0x17 /* Power Management Channel 3 */
+#define IT8528E_PMC4 0x18 /* Power Management Channel 4 */
+#define IT8528E_PMC5 0x19 /* Power Management Channel 5 */
+
+
+#endif /* SUPERIO_ITE_IT8528E_H */
diff --git a/src/superio/ite/it8528e/superio.c b/src/superio/ite/it8528e/superio.c
new file mode 100644
index 0000000000..72e287093d
--- /dev/null
+++ b/src/superio/ite/it8528e/superio.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2007 Philipp Degler <pdegler@rumms.uni-mannheim.de>
+ * Copyright (C) 2017 Gergely Kiss <mail.gery@gmail.com>
+ * Copyright (C) 2019 9Elements GmbH <patrick.rudolph@9elements.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <device/device.h>
+#include <device/pnp.h>
+#include <arch/io.h>
+#include <stdlib.h>
+#include <superio/conf_mode.h>
+
+#include "it8528e.h"
+
+static void it8528e_init(struct device *dev)
+{
+}
+
+static struct device_operations ops = {
+	.read_resources   = pnp_read_resources,
+	.set_resources    = pnp_set_resources,
+	.enable_resources = pnp_enable_resources,
+	.enable           = pnp_alt_enable,
+	.init             = it8528e_init,
+	.ops_pnp_mode     = &pnp_conf_mode_870155_aa,
+};
+
+static struct pnp_info pnp_dev_info[] = {
+	{ NULL, IT8528E_SP1, PNP_IO0 | PNP_IRQ0, 0x0ff8, },
+	{ NULL, IT8528E_SP2, PNP_IO0 | PNP_IRQ0, 0x0ff8, },
+	{ NULL, IT8528E_SWUC, PNP_IO0 | PNP_IRQ0, 0xfff0, },
+	{ NULL, IT8528E_KBCM, PNP_IRQ0, },
+	/* Documentation: Program io0 = 0x60 and io1 = 0x64 */
+	{ NULL, IT8528E_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff, },
+	{ NULL, IT8528E_IR, PNP_IO0 | PNP_IRQ0, 0xfff8, },
+	{ NULL, IT8528E_SMFI, PNP_IO0 | PNP_IRQ0, 0xfff0, },
+	/* Documentation: Program io0 = 0x70 and io1 = 0x272 */
+	{ NULL, IT8528E_RTCT, PNP_IO0 | PNP_IO1 | PNP_IO2 | PNP_IO3 | PNP_IRQ0,
+		0xfffe, 0xfffe, 0xfffe, 0xfffe},
+	/* Documentation: Program io0 = 0x62 and io1 = 0x66 */
+	{ NULL, IT8528E_PMC1, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff },
+	{ NULL, IT8528E_PMC2, PNP_IO0 | PNP_IO1 | PNP_IO2 | PNP_IRQ0, 0x07fc,
+		0x07fc, 0xfff0 },
+	/* Documentation is unclear if PMC3-5 have LPC I/O decoding support */
+	{ NULL, IT8528E_PMC3, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff },
+	{ NULL, IT8528E_PMC4, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff },
+	{ NULL, IT8528E_PMC5, PNP_IO0 | PNP_IO1 | PNP_IRQ0, 0x07ff, 0x07ff },
+	{ NULL, IT8528E_SSPI, PNP_IO0 | PNP_IRQ0, 0xfff8 },
+	{ NULL, IT8528E_PECI, PNP_IO0, 0xfff8 },
+};
+
+static void enable_dev(struct device *dev)
+{
+	pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
+}
+
+struct chip_operations superio_ite_it8528e_ops = {
+	CHIP_NAME("ITE IT8528E Super I/O")
+	.enable_dev = enable_dev,
+};