ARM: add Highbank core platform support
This adds basic support for the Calxeda Highbank platform.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
new file mode 100644
index 0000000..b82dcf0
--- /dev/null
+++ b/arch/arm/mach-highbank/highbank.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2010-2011 Calxeda, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+
+#include <asm/cacheflush.h>
+#include <asm/unified.h>
+#include <asm/smp_scu.h>
+#include <asm/hardware/arm_timer.h>
+#include <asm/hardware/timer-sp.h>
+#include <asm/hardware/gic.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <mach/irqs.h>
+
+#include "core.h"
+#include "sysregs.h"
+
+void __iomem *sregs_base;
+
+#define HB_SCU_VIRT_BASE 0xfee00000
+void __iomem *scu_base_addr = ((void __iomem *)(HB_SCU_VIRT_BASE));
+
+static struct map_desc scu_io_desc __initdata = {
+ .virtual = HB_SCU_VIRT_BASE,
+ .pfn = 0, /* run-time */
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+};
+
+static void __init highbank_scu_map_io(void)
+{
+ unsigned long base;
+
+ /* Get SCU base */
+ asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base));
+
+ scu_io_desc.pfn = __phys_to_pfn(base);
+ iotable_init(&scu_io_desc, 1);
+}
+
+static void __init highbank_map_io(void)
+{
+ highbank_scu_map_io();
+ highbank_lluart_map_io();
+}
+
+#define HB_JUMP_TABLE_PHYS(cpu) (0x40 + (0x10 * (cpu)))
+#define HB_JUMP_TABLE_VIRT(cpu) phys_to_virt(HB_JUMP_TABLE_PHYS(cpu))
+
+void highbank_set_cpu_jump(int cpu, void *jump_addr)
+{
+ writel(BSYM(virt_to_phys(jump_addr)), HB_JUMP_TABLE_VIRT(cpu));
+ __cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16);
+ outer_clean_range(HB_JUMP_TABLE_PHYS(cpu),
+ HB_JUMP_TABLE_PHYS(cpu) + 15);
+}
+
+const static struct of_device_id irq_match[] = {
+ { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+ {}
+};
+
+static void __init highbank_init_irq(void)
+{
+ of_irq_init(irq_match);
+ l2x0_of_init(0, ~0UL);
+}
+
+static void __init highbank_timer_init(void)
+{
+ int irq;
+ struct device_node *np;
+ void __iomem *timer_base;
+
+ /* Map system registers */
+ np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs");
+ sregs_base = of_iomap(np, 0);
+ WARN_ON(!sregs_base);
+
+ np = of_find_compatible_node(NULL, NULL, "arm,sp804");
+ timer_base = of_iomap(np, 0);
+ WARN_ON(!timer_base);
+ irq = irq_of_parse_and_map(np, 0);
+
+ highbank_clocks_init();
+
+ sp804_clocksource_init(timer_base + 0x20, "timer1");
+ sp804_clockevents_init(timer_base, irq, "timer0");
+}
+
+static struct sys_timer highbank_timer = {
+ .init = highbank_timer_init,
+};
+
+static void highbank_power_off(void)
+{
+ hignbank_set_pwr_shutdown();
+ scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
+
+ while (1)
+ cpu_do_idle();
+}
+
+static void __init highbank_init(void)
+{
+ pm_power_off = highbank_power_off;
+
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *highbank_match[] __initconst = {
+ "calxeda,highbank",
+ NULL,
+};
+
+DT_MACHINE_START(HIGHBANK, "Highbank")
+ .map_io = highbank_map_io,
+ .init_irq = highbank_init_irq,
+ .timer = &highbank_timer,
+ .init_machine = highbank_init,
+ .dt_compat = highbank_match,
+MACHINE_END