From: Miodrag Dinic <miodrag.dinic@xxxxxxxxxx>
Provide amendments to Mips generic platform framework so that
a new generic-based virtual board Ranchu can be chosen to be built.
Signed-off-by: Miodrag Dinic <miodrag.dinic@xxxxxxxxxx>
Signed-off-by: Goran Ferenc <goran.ferenc@xxxxxxxxxx>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@xxxxxxxxxx>
---
MAINTAINERS | 6 ++
arch/mips/configs/generic/board-ranchu.config | 23 ++++++++
arch/mips/generic/Kconfig | 11 ++++
arch/mips/generic/Makefile | 1 +
arch/mips/generic/board-ranchu.c | 83 +++++++++++++++++++++++++++
5 files changed, 124 insertions(+)
create mode 100644 arch/mips/configs/generic/board-ranchu.config
create mode 100644 arch/mips/generic/board-ranchu.c
diff --git a/MAINTAINERS b/MAINTAINERS
index fb4c6ea..35dfdd0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10678,6 +10678,12 @@ S: Maintained
F: Documentation/blockdev/ramdisk.txt
F: drivers/block/brd.c
+RANCHU VIRTUAL BOARD FOR MIPS
+M: Miodrag Dinic <miodrag.dinic@xxxxxxxxxx>
+L: linux-mips@xxxxxxxxxxxxxx
+S: Supported
+F: arch/mips/generic/board-ranchu.c
+
RANDOM NUMBER DRIVER
M: "Theodore Ts'o" <tytso@xxxxxxx>
S: Maintained
diff --git a/arch/mips/configs/generic/board-ranchu.config b/arch/mips/configs/generic/board-ranchu.config
new file mode 100644
index 0000000..7ce0948
--- /dev/null
+++ b/arch/mips/configs/generic/board-ranchu.config
@@ -0,0 +1,23 @@
+CONFIG_VIRT_BOARD_RANCHU=y
+
+CONFIG_BATTERY_GOLDFISH=y
+CONFIG_FB_GOLDFISH=y
+CONFIG_GOLDFISH=y
+CONFIG_GOLDFISH_AUDIO=y
+CONFIG_GOLDFISH_PIC=y
+CONFIG_GOLDFISH_PIPE=y
+CONFIG_GOLDFISH_TTY=y
+CONFIG_RTC_DRV_GOLDFISH=y
+
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_KEYBOARD_GOLDFISH_EVENTS=y
+
+CONFIG_POWER_SUPPLY=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_RESET_SYSCON_POWEROFF=y
+
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
diff --git a/arch/mips/generic/Kconfig b/arch/mips/generic/Kconfig
index a606b3f..15be3f9 100644
--- a/arch/mips/generic/Kconfig
+++ b/arch/mips/generic/Kconfig
@@ -16,4 +16,15 @@ config LEGACY_BOARD_SEAD3
Enable this to include support for booting on MIPS SEAD-3 FPGA-based
development boards, which boot using a legacy boot protocol.
+config VIRT_BOARD_RANCHU
+ bool "Ranchu platform for Android emulator"
+ select LEGACY_BOARDS
+ help
+ This enables support for the platform used by Android emulator.
+
+ Ranchu platform consists of a set of virtual devices. This platform
+ enables emulation of variety of virtual configurations while using
+ Android emulator. Android emulator is based on Qemu, and contains
+ the support for the same set of virtual devices.
+
endif
diff --git a/arch/mips/generic/Makefile b/arch/mips/generic/Makefile
index acb9b6d..4ae52f3 100644
--- a/arch/mips/generic/Makefile
+++ b/arch/mips/generic/Makefile
@@ -13,4 +13,5 @@ obj-y += irq.o
obj-y += proc.o
obj-$(CONFIG_LEGACY_BOARD_SEAD3) += board-sead3.o
+obj-$(CONFIG_VIRT_BOARD_RANCHU) += board-ranchu.o
obj-$(CONFIG_KEXEC) += kexec.o
diff --git a/arch/mips/generic/board-ranchu.c b/arch/mips/generic/board-ranchu.c
new file mode 100644
index 0000000..5dc96e5
--- /dev/null
+++ b/arch/mips/generic/board-ranchu.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2017 Imagination Technologies Ltd.
+ * Author: Miodrag Dinic <miodrag.dinic@xxxxxxxxxx>
+ *
+ * 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.
+ */
+
+#include <asm/machine.h>
+#include <asm/time.h>
+
+#define GOLDFISH_TIMER_LOW 0x00
+#define GOLDFISH_TIMER_HIGH 0x04
+#define GOLDFISH_TIMER_BASE 0x1f005000
+
+static __init uint64_t read_rtc_time(void __iomem *base)
+{
+ uint64_t time_low;
+ uint64_t time_high;
+ uint64_t time_high_prev;
+
+ time_high = readl(base + GOLDFISH_TIMER_HIGH);
+ do {
+ time_high_prev = time_high;
+ time_low = readl(base + GOLDFISH_TIMER_LOW);
+ time_high = readl(base + GOLDFISH_TIMER_HIGH);
+ } while (time_high != time_high_prev);
+
+ return ((int64_t)time_high << 32) | time_low;
+}
+
+static __init unsigned int ranchu_measure_hpt_freq(void)
+{
+ uint64_t rtc_start, rtc_current, rtc_delta;
+ unsigned int start, count;
+ unsigned int prid = read_c0_prid() & 0xffff00;
+ void __iomem *rtc_base = ioremap(GOLDFISH_TIMER_BASE, 0x1000);
+
+ if (!rtc_base)
+ panic("%s(): Failed to ioremap Goldfish timer base %p!",
+ __func__, (void *)GOLDFISH_TIMER_BASE);
+
+ /*
+ * poll the nanosecond resolution RTC for 1 second
+ * to calibrate the CPU frequency
+ */
+
+ rtc_start = read_rtc_time(rtc_base);
+ start = read_c0_count();
+
+ do {
+ rtc_current = read_rtc_time(rtc_base);
+ rtc_delta = rtc_current - rtc_start;
+ } while (rtc_delta < NSEC_PER_SEC);
+
+ count = read_c0_count() - start;
+
+ mips_hpt_frequency = count;
+ if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) &&
+ (prid != (PRID_COMP_MIPS | PRID_IMP_25KF)))
+ count *= 2;
+
+ count += 5000; /* round */
+ count -= count%10000;
+
+ return count;
+}
+
+static const struct of_device_id ranchu_of_match[];
+
+MIPS_MACHINE(ranchu) = {
+ .matches = ranchu_of_match,
+ .measure_hpt_freq = ranchu_measure_hpt_freq,
+};
+
+static const struct of_device_id ranchu_of_match[] = {
+ {
+ .compatible = "mti,ranchu",
+ .data = &__mips_mach_ranchu,
+ },
+};
--
2.7.4
