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authorIonela Voinescu <ionela.voinescu@imgtec.com>2014-09-24 17:05:33 +0100
committerPatrick Georgi <pgeorgi@google.com>2015-03-21 11:07:50 +0100
commitce22c023878d2b2e5963f379857ccec4815aeede (patch)
treeb047099359cc3695ac939803cd643c2f2de8afd3 /payloads/libpayload/drivers/timer
parent51421633d534752c2d677a5255f9583ecdcd4a60 (diff)
downloadcoreboot-ce22c023878d2b2e5963f379857ccec4815aeede.tar.xz
libpayload: arch/mips: Add basic MIPS architecture support
Add the basic build infrastructure and architectural support required to build for targets using the MIPS architecture. This will require the addition of cache maintenance. BUG=chrome-os-partner:31438 TEST=tested on Pistachio FPGA with Depthcharge as payload; successfully executed payload. BRANCH=none Change-Id: I75cfd0536860b6d84b53a567940fe6668d9b2cbb Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 758c8cb9a6846e6ca32be409ec5f7a888ac9c888 Original-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com> Original-Change-Id: I0b9af983bf5032335a519ce2510a0b3aca082edf Original-Reviewed-on: https://chromium-review.googlesource.com/219740 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/8741 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'payloads/libpayload/drivers/timer')
-rw-r--r--payloads/libpayload/drivers/timer/img_pistachio.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/timer/img_pistachio.c b/payloads/libpayload/drivers/timer/img_pistachio.c
new file mode 100644
index 0000000000..dcfe555a73
--- /dev/null
+++ b/payloads/libpayload/drivers/timer/img_pistachio.c
@@ -0,0 +1,36 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <libpayload.h>
+#include <arch/cpu.h>
+
+static int get_timer_speed_khz(void)
+{
+ return get_cpu_speed()/2;
+}
+
+uint64_t timer_hz(void)
+{
+ return lib_sysinfo.cpu_khz * 1000;
+}
+
+uint64_t timer_raw_value(void)
+{
+ return read_c0_count()/(get_timer_speed_khz()/1000);
+}