google/gale: Initial commit for Gale board support

Copy 'storm' files as a template

BUG=chrome-os-partner:49249
TEST=None. Initial code. Not sure if it will even compile
BRANCH=none

Original-Commit-Id: 4bfabf22cb33ac2aacff0ebeed54655664505148
Original-Change-Id: I94e361911b89c5159b99f3d00efbcda94f763e71
Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Original-Signed-off-by: Kan Yan <kyan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/333177
Original-Commit-Ready: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>

squashed:

google/gale: Remove unwanted config option

2016.02 doesn't seem to like CONSOLE_CBMEM_DUMP_TO_UART

BUG=chrome-os-partner:49249
TEST=None. Initial code not sure if it will even compile
BRANCH=none

Original-Commit-Id: 44b91a8f83515936156206f9f273e0e5c62c3f17
Original-Change-Id: I9294ff602a05e4c9573fee3b9b51f9cc5305e192
Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/333302
Original-Commit-Ready: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>

google/gale: Update ipq806x/storm references

Since the files were taken from ipq806x/storm as
template. Update those references to reflect
ipq40xx/gale.

BUG=chrome-os-partner:49249
TEST=None. Initial code not sure if it will even compile
BRANCH=none

Original-Commit-Id: fa5962b757dbb6cc9e1e6d1e33e1e09ec6cb4cd2
Original-Change-Id: Ia330367a0547ac4306ef2514dc1305e2d65f80e4
Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/333292
Original-Commit-Ready: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>

google/gale: Update fill_lb_gpios for new scheme

This updates fill_lb_gpios to follow the new scheme introduced
in CL:337176.

BUG=none
BRANCH=none
TEST=chromeos.c compiles successfully for gale

Original-Commit-Id: 635d7fd71d91552bd7470faeb5637ba1a727f940
Original-Change-Id: I6f98325918b350645b9c19b71125bc12a54953ab
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/338651

google/gale: Add '.fmd' file

BUG=chrome-os-partner:49249
TEST=None. Initial code. Not sure if it will even compile
BRANCH=none

Original-Commit-Id: 474de31f7ed0adbe54251ca363e685019091b4e7
Original-Change-Id: I4019b110af676090e8751b315dadc5b601a56178
Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/333291
Original-Commit-Ready: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Iad8e010371f3b9b92ab26eee4ba35c4f16d3732c
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/14642
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 154 insertions, 0 deletions

diff --git a/src/mainboard/google/gale/chromeos.c b/src/mainboard/google/gale/chromeos.c
new file mode 100644
index 0000000000..a379280ca5
--- /dev/null
+++ b/src/mainboard/google/gale/chromeos.c
@@ -0,0 +1,154 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 Google Inc.
+ *
+ * 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 <boardid.h>
+#include <boot/coreboot_tables.h>
+#include <console/console.h>
+#include <delay.h>
+#include <drivers/i2c/ww_ring/ww_ring.h>
+#include <gpio.h>
+#include <soc/cdp.h>
+#include <soc/gsbi.h>
+#include <string.h>
+#include <timer.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+#define DEV_SW 15
+#define DEV_POL ACTIVE_LOW
+#define REC_SW 16
+#define REC_POL ACTIVE_LOW
+#define WP_SW  17
+#define WP_POL ACTIVE_LOW
+
+static int read_gpio(gpio_t gpio_num)
+{
+	gpio_tlmm_config_set(gpio_num, GPIO_FUNC_DISABLE,
+			     GPIO_NO_PULL, GPIO_2MA, GPIO_DISABLE);
+	udelay(10); /* Should be enough to settle. */
+	return gpio_get(gpio_num);
+}
+
+void fill_lb_gpios(struct lb_gpios *gpios)
+{
+	struct lb_gpio chromeos_gpios[] = {
+		{DEV_SW, ACTIVE_LOW, read_gpio(DEV_SW), "developer"},
+		{REC_SW, ACTIVE_LOW, read_gpio(REC_SW), "recovery"},
+		{WP_SW, ACTIVE_LOW, read_gpio(WP_SW), "write protect"},
+		{-1, ACTIVE_LOW, 1, "power"},
+		{-1, ACTIVE_LOW, 0, "lid"},
+	};
+	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
+}
+
+int get_developer_mode_switch(void)
+{
+	return 0;
+}
+
+/*
+ * The recovery switch on storm is overloaded: it needs to be pressed for a
+ * certain duration at startup to signal different requests:
+ *
+ * - keeping it pressed for 8 to 16 seconds after startup signals the need for
+ *   factory reset (wipeout);
+ * - keeping it pressed for longer than 16 seconds signals the need for Chrome
+ *   OS recovery.
+ *
+ * The state is read once and cached for following inquiries. The below enum
+ * lists possible states.
+ */
+enum switch_state {
+	not_probed = -1,
+	no_req,
+	recovery_req,
+	wipeout_req
+};
+
+static void display_pattern(int pattern)
+{
+	if (board_id() == BOARD_ID_WHIRLWIND_SP5)
+		ww_ring_display_pattern(GSBI_ID_7, pattern);
+}
+
+#define WIPEOUT_MODE_DELAY_MS (8 * 1000)
+#define RECOVERY_MODE_EXTRA_DELAY_MS (8 * 1000)
+
+static enum switch_state get_switch_state(void)
+{
+	struct stopwatch sw;
+	int sampled_value;
+	static enum switch_state saved_state = not_probed;
+
+	if (saved_state != not_probed)
+		return saved_state;
+
+	sampled_value = read_gpio(REC_SW) ^ !REC_POL;
+
+	if (!sampled_value) {
+		saved_state = no_req;
+		display_pattern(WWR_NORMAL_BOOT);
+		return saved_state;
+	}
+
+	display_pattern(WWR_RECOVERY_PUSHED);
+	printk(BIOS_INFO, "recovery button pressed\n");
+
+	stopwatch_init_msecs_expire(&sw, WIPEOUT_MODE_DELAY_MS);
+
+	do {
+		sampled_value = read_gpio(REC_SW) ^ !REC_POL;
+		if (!sampled_value)
+			break;
+	} while (!stopwatch_expired(&sw));
+
+	if (sampled_value) {
+		display_pattern(WWR_WIPEOUT_REQUEST);
+		printk(BIOS_INFO, "wipeout requested, checking recovery\n");
+		stopwatch_init_msecs_expire(&sw, RECOVERY_MODE_EXTRA_DELAY_MS);
+		do {
+			sampled_value = read_gpio(REC_SW) ^ !REC_POL;
+			if (!sampled_value)
+				break;
+		} while (!stopwatch_expired(&sw));
+
+		if (sampled_value) {
+			saved_state = recovery_req;
+			display_pattern(WWR_RECOVERY_REQUEST);
+			printk(BIOS_INFO, "recovery requested\n");
+		} else {
+			saved_state = wipeout_req;
+		}
+	} else {
+		saved_state = no_req;
+		display_pattern(WWR_NORMAL_BOOT);
+	}
+
+	return saved_state;
+}
+
+int get_recovery_mode_switch(void)
+{
+	return get_switch_state() == recovery_req;
+}
+
+int get_wipeout_mode_switch(void)
+{
+	return get_switch_state() == wipeout_req;
+}
+
+int get_write_protect_state(void)
+{
+	return read_gpio(WP_SW) ^ !WP_POL;
+}