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authorVaradarajan Narayanan <varada@codeaurora.org>2016-03-02 13:15:47 +0530
committerPatrick Georgi <pgeorgi@google.com>2016-05-10 21:36:49 +0200
commit3bbd90173a9486b057aeb484ad5538b6e6cf42c7 (patch)
tree128ba6c8b2999294980b623a24870234bb77afa1 /src/mainboard/google/gale/chromeos.c
parentdc17d2de346008aa648aab626dd2a8593b082685 (diff)
downloadcoreboot-3bbd90173a9486b057aeb484ad5538b6e6cf42c7.tar.xz
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>
Diffstat (limited to 'src/mainboard/google/gale/chromeos.c')
-rw-r--r--src/mainboard/google/gale/chromeos.c154
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;
+}