ec: add support for KBC1126 in HP laptops

- let the coreboot build system insert the two blobs to the coreboot image
- EC and Super I/O initialization
- ACPI support

Tested on 2760p, 8460p, 2570p, 8470p.

Issue:

Kernel gives the following error:

  ACPI Error: No handler for Region [ECRM] (...) [EmbeddedControl]
  ACPI Error: Region EmbeddedControl (ID=3) has no handler

TODO:

- consider moving the Super I/O initialization code to ramstage, or
  reuse the existing sio/smsc/kbc1100 code (if so, how to add the
  additional kbc1126 specific functions to sio/kbc1100)
- sort out the ACPI code which is mostly from the ACPI dump of vendor
  firmware
- find out why the digitizer in hp/2760p doesn't work
- GRUB payload freezing on all HP Elitebooks may be related to EC

Change-Id: I6b16eb7e26303eda740f52d667dedb7cc04b4ef0
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/19072
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 108 insertions, 0 deletions

diff --git a/src/ec/hp/kbc1126/early_init.c b/src/ec/hp/kbc1126/early_init.c
new file mode 100644
index 0000000000..2a74a93a1a
--- /dev/null
+++ b/src/ec/hp/kbc1126/early_init.c
@@ -0,0 +1,108 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Iru Cai <mytbk920423@gmail.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.
+ */
+
+#include <arch/io.h>
+#include <device/pnp.h>
+#include "ec.h"
+
+void kbc1126_enter_conf(void)
+{
+	outb(0x55, 0x2e);
+	outb(0x22, 0x2e);
+	outb(0x00, 0x2f);
+	outb(0x23, 0x2e);
+	outb(0x00, 0x2f);
+	outb(0x24, 0x2e);
+	outb(0x84, 0x2f);
+}
+
+void kbc1126_exit_conf(void)
+{
+	outb(0xaa, 0x2e);
+	/* one more time in PlatformStage1 of vendor firmware */
+	outb(0xaa, 0x2e);
+
+	outb(0x83, 0x200);
+	outb(0x00, 0x201);
+	inb(0x201);
+}
+
+void kbc1126_mailbox_init(void)
+{
+	pnp_devfn_t dev = PNP_DEV(0x2e, KBC1100_MAILBOX);
+	pnp_set_logical_device(dev);
+	pnp_set_iobase(dev, PNP_IDX_IO0, 0x200);
+	pnp_set_enable(dev, 1);
+}
+
+void kbc1126_kbc_init(void)
+{
+	pnp_devfn_t dev = PNP_DEV(0x2e, KBC1100_KBC);
+	pnp_set_logical_device(dev);
+	pnp_set_irq(dev, PNP_IDX_IRQ0, 0x1);
+	pnp_set_irq(dev, PNP_IDX_IRQ1, 0xc);
+	pnp_set_enable(dev, 1);
+}
+
+void kbc1126_ec_init(void)
+{
+	pnp_devfn_t dev = PNP_DEV(0x2e, KBC1100_EC0);
+	pnp_set_logical_device(dev);
+	pnp_set_iobase(dev, PNP_IDX_IO0, 0x62);
+	pnp_set_enable(dev, 1);
+}
+
+void kbc1126_com1_init(void)
+{
+	pnp_devfn_t dev = PNP_DEV(0x2e, SMSCSUPERIO_SP1);
+	pnp_set_logical_device(dev);
+	pnp_set_iobase(dev, PNP_IDX_IO0, 0x280);
+	pnp_set_irq(dev, PNP_IDX_IRQ0, 0x6);
+	pnp_set_enable(dev, 1);
+}
+
+void kbc1126_pm1_init(void)
+{
+	pnp_devfn_t dev = PNP_DEV(0x2e, KBC1100_PM1);
+	pnp_set_logical_device(dev);
+	pnp_set_iobase(dev, PNP_IDX_IO0, 0x220);
+	pnp_set_enable(dev, 1);
+}
+
+/*
+ * This code is found in PEI module F65354B9-1FF0-46D7-A5F7-0926CB238048
+ * of the OEM firmware.
+ *
+ * For mainboards without a Super I/O at 0x4e, without this code, superiotool
+ * will detect an Infineon Super I/O at 0x4e.
+ */
+
+void kbc1126_disable4e(void)
+{
+	outb(0x55, 0x4e);
+
+	outb(0x26, 0x4e);
+	outb(0x00, 0x4f);
+	outb(0x27, 0x4e);
+	outb(0xfe, 0x4f);
+	outb(0x60, 0x4e);
+	outb(0xfe, 0x4f);
+	outb(0x61, 0x4e);
+	outb(0x80, 0x4f);
+	outb(0x30, 0x4e);
+	outb(0x01, 0x4f);
+
+	outb(0xaa, 0x4e);
+}