[PATCH 2/6] ARM: add Highbank core platform support
Rob Herring
robherring2 at gmail.com
Tue Aug 16 16:34:54 EDT 2011
From: Rob Herring <rob.herring at calxeda.com>
This adds basic support for the Calxeda Highbank platform.
Signed-off-by: Rob Herring <rob.herring at calxeda.com>
---
arch/arm/Kconfig | 17 ++
arch/arm/Makefile | 1 +
arch/arm/mach-highbank/Makefile | 1 +
arch/arm/mach-highbank/Makefile.boot | 1 +
arch/arm/mach-highbank/clock.c | 63 ++++++++
arch/arm/mach-highbank/core.h | 3 +
arch/arm/mach-highbank/highbank.c | 164 +++++++++++++++++++++
arch/arm/mach-highbank/include/mach/debug-macro.S | 20 +++
arch/arm/mach-highbank/include/mach/entry-macro.S | 9 +
arch/arm/mach-highbank/include/mach/gpio.h | 1 +
arch/arm/mach-highbank/include/mach/io.h | 8 +
arch/arm/mach-highbank/include/mach/irqs.h | 6 +
arch/arm/mach-highbank/include/mach/memory.h | 1 +
arch/arm/mach-highbank/include/mach/system.h | 26 ++++
arch/arm/mach-highbank/include/mach/timex.h | 6 +
arch/arm/mach-highbank/include/mach/uncompress.h | 9 +
arch/arm/mach-highbank/include/mach/vmalloc.h | 6 +
arch/arm/mach-highbank/sysregs.h | 30 ++++
arch/arm/mach-highbank/system.c | 33 ++++
arch/arm/mm/Kconfig | 2 +-
20 files changed, 406 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-highbank/Makefile
create mode 100644 arch/arm/mach-highbank/Makefile.boot
create mode 100644 arch/arm/mach-highbank/clock.c
create mode 100644 arch/arm/mach-highbank/core.h
create mode 100644 arch/arm/mach-highbank/highbank.c
create mode 100644 arch/arm/mach-highbank/include/mach/debug-macro.S
create mode 100644 arch/arm/mach-highbank/include/mach/entry-macro.S
create mode 100644 arch/arm/mach-highbank/include/mach/gpio.h
create mode 100644 arch/arm/mach-highbank/include/mach/io.h
create mode 100644 arch/arm/mach-highbank/include/mach/irqs.h
create mode 100644 arch/arm/mach-highbank/include/mach/memory.h
create mode 100644 arch/arm/mach-highbank/include/mach/system.h
create mode 100644 arch/arm/mach-highbank/include/mach/timex.h
create mode 100644 arch/arm/mach-highbank/include/mach/uncompress.h
create mode 100644 arch/arm/mach-highbank/include/mach/vmalloc.h
create mode 100644 arch/arm/mach-highbank/sysregs.h
create mode 100644 arch/arm/mach-highbank/system.c
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 5ebc5d9..eecee3d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -318,6 +318,23 @@ config ARCH_BCMRING
help
Support for Broadcom's BCMRing platform.
+config ARCH_HIGHBANK
+ bool "Calxeda Highbank-based"
+ select CPU_V7
+ select AUTO_ZRELADDR
+ select ARM_PATCH_PHYS_VIRT
+ select ARM_GIC
+ select HAVE_ARM_SCU
+ select ARM_AMBA
+ select ARM_TIMER_SP804
+ select PL330
+ select CLKDEV_LOOKUP
+ select GENERIC_CLOCKEVENTS
+ select USE_OF
+ select ARCH_WANT_OPTIONAL_GPIOLIB
+ help
+ Support for the Calxeda Highbank SoC based boards.
+
config ARCH_CLPS711X
bool "Cirrus Logic CLPS711x/EP721x-based"
select CPU_ARM720T
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 70c424e..451097e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -141,6 +141,7 @@ machine-$(CONFIG_ARCH_EBSA110) := ebsa110
machine-$(CONFIG_ARCH_EP93XX) := ep93xx
machine-$(CONFIG_ARCH_GEMINI) := gemini
machine-$(CONFIG_ARCH_H720X) := h720x
+machine-$(CONFIG_ARCH_HIGHBANK) := highbank
machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
machine-$(CONFIG_ARCH_IOP13XX) := iop13xx
machine-$(CONFIG_ARCH_IOP32X) := iop32x
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile
new file mode 100644
index 0000000..b5de3b9
--- /dev/null
+++ b/arch/arm/mach-highbank/Makefile
@@ -0,0 +1 @@
+obj-y := clock.o highbank.o system.o
diff --git a/arch/arm/mach-highbank/Makefile.boot b/arch/arm/mach-highbank/Makefile.boot
new file mode 100644
index 0000000..dae9661
--- /dev/null
+++ b/arch/arm/mach-highbank/Makefile.boot
@@ -0,0 +1 @@
+zreladdr-y := 0x00008000
diff --git a/arch/arm/mach-highbank/clock.c b/arch/arm/mach-highbank/clock.c
new file mode 100644
index 0000000..8464e14
--- /dev/null
+++ b/arch/arm/mach-highbank/clock.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright 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/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+
+
+struct clk {
+ unsigned long rate;
+};
+
+int clk_enable(struct clk *clk)
+{
+ return 0;
+}
+
+void clk_disable(struct clk *clk)
+{}
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ return clk->rate;
+}
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+ return clk->rate;
+}
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ return 0;
+}
+
+static struct clk eclk = { .rate = 200000000 };
+static struct clk pclk = { .rate = 150000000 };
+
+static struct clk_lookup lookups[] = {
+ { .clk = &pclk, .con_id = "apb_pclk", },
+ { .clk = &pclk, .dev_id = "sp804", },
+ { .clk = &eclk, .dev_id = "ffe0e000.sdhci", },
+ { .clk = &pclk, .dev_id = "fff36000.serial", },
+};
+
+void __init highbank_clocks_init(void)
+{
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+}
diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h
new file mode 100644
index 0000000..b5aa45f
--- /dev/null
+++ b/arch/arm/mach-highbank/core.h
@@ -0,0 +1,3 @@
+extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
+extern void __iomem *a9_base_addr;
+extern void highbank_clocks_init(void);
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
new file mode 100644
index 0000000..49bbd13
--- /dev/null
+++ b/arch/arm/mach-highbank/highbank.c
@@ -0,0 +1,164 @@
+/*
+ * 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/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"
+
+#define HB_DEBUG_LL_PHYS_BASE 0xfff36000
+
+/* Static virtual mappings */
+#define HB_DEBUG_LL_VIRT_BASE 0xfee36000
+#define HB_MPIC_VIRT_BASE 0xfee00000
+
+void __iomem *a9_base_addr = ((void __iomem *)(HB_MPIC_VIRT_BASE));
+void __iomem *sregs_base;
+
+static struct map_desc highbank_io_desc[] __initdata = {
+ {
+ .virtual = HB_MPIC_VIRT_BASE,
+ .pfn = 0, /* run-time */
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+#ifdef CONFIG_DEBUG_LL
+ {
+ .virtual = HB_DEBUG_LL_VIRT_BASE,
+ .pfn = __phys_to_pfn(HB_DEBUG_LL_PHYS_BASE),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+#endif
+};
+
+static void __init highbank_map_io(void)
+{
+ unsigned long base;
+
+ /* Get SCU base */
+ asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base));
+
+ highbank_io_desc[0].pfn = __phys_to_pfn(base);
+ iotable_init(highbank_io_desc, ARRAY_SIZE(highbank_io_desc));
+}
+
+#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);
+}
+
+void highbank_init_irq(void)
+{
+ struct device_node *node;
+ struct of_intc_desc desc;
+ int n = 0;
+
+ memset(&desc, 0, sizeof(desc));
+ desc.controller = of_find_compatible_node(NULL, NULL, "arm,cortex-a9-gic");
+ gic_of_init(&desc);
+ node = desc.controller;
+ for_each_child_of_node(node, desc.controller) {
+ gic_of_ppi_init(&desc);
+ }
+
+ for_each_compatible_node(node, NULL, "arm,pl061") {
+ irq_domain_add_simple(node, 160 + (8 * n));
+ n++;
+ }
+
+#ifdef CONFIG_CACHE_L2X0
+ l2x0_of_init(0, ~0UL);
+#endif
+}
+
+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);
+
+ np = of_find_compatible_node(NULL, NULL, "arm,sp804");
+ timer_base = of_iomap(np, 0);
+ 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)
+{
+ writel(HB_PWR_SHUTDOWN, sregs_base + HB_SREG_A9_PWR_REQ);
+ scu_power_mode(a9_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,
+ .nr_irqs = NR_IRQS,
+ .timer = &highbank_timer,
+ .init_machine = highbank_init,
+ .dt_compat = highbank_match,
+MACHINE_END
diff --git a/arch/arm/mach-highbank/include/mach/debug-macro.S b/arch/arm/mach-highbank/include/mach/debug-macro.S
new file mode 100644
index 0000000..f56096f
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/debug-macro.S
@@ -0,0 +1,20 @@
+/*
+ * Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+ .macro addruart,rp,rv
+ movw \rv, #0x6000
+ movt \rv, #0xfee3
+ movw \rp, #0x6000
+ movt \rp, #0xfff3
+ .endm
+
+#include <asm/hardware/debug-pl01x.S>
+
diff --git a/arch/arm/mach-highbank/include/mach/entry-macro.S b/arch/arm/mach-highbank/include/mach/entry-macro.S
new file mode 100644
index 0000000..56be409
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/entry-macro.S
@@ -0,0 +1,9 @@
+#include <asm/hardware/gic.h>
+#include <asm/hardware/entry-macro-gic.S>
+
+ .macro disable_fiq
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
+
diff --git a/arch/arm/mach-highbank/include/mach/gpio.h b/arch/arm/mach-highbank/include/mach/gpio.h
new file mode 100644
index 0000000..40a8c17
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-highbank/include/mach/io.h b/arch/arm/mach-highbank/include/mach/io.h
new file mode 100644
index 0000000..5a37da2
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/io.h
@@ -0,0 +1,8 @@
+#ifndef __MACH_IO_H
+#define __MACH_IO_H
+
+#define IO_SPACE_LIMIT 0
+#define __io(a) ((void __iomem *)0)
+#define __mem_pci(a) (a)
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/irqs.h b/arch/arm/mach-highbank/include/mach/irqs.h
new file mode 100644
index 0000000..9746aab
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/irqs.h
@@ -0,0 +1,6 @@
+#ifndef __MACH_IRQS_H
+#define __MACH_IRQS_H
+
+#define NR_IRQS 192
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/memory.h b/arch/arm/mach-highbank/include/mach/memory.h
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/memory.h
@@ -0,0 +1 @@
+
diff --git a/arch/arm/mach-highbank/include/mach/system.h b/arch/arm/mach-highbank/include/mach/system.h
new file mode 100644
index 0000000..7e81922
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/system.h
@@ -0,0 +1,26 @@
+/*
+ * 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/>.
+ */
+#ifndef __MACH_SYSTEM_H
+#define __MACH_SYSTEM_H
+
+static inline void arch_idle(void)
+{
+ cpu_do_idle();
+}
+
+extern void arch_reset(char mode, const char *cmd);
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/timex.h b/arch/arm/mach-highbank/include/mach/timex.h
new file mode 100644
index 0000000..88dac7a
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/timex.h
@@ -0,0 +1,6 @@
+#ifndef __MACH_TIMEX_H
+#define __MACH_TIMEX_H
+
+#define CLOCK_TICK_RATE 1000000
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/uncompress.h b/arch/arm/mach-highbank/include/mach/uncompress.h
new file mode 100644
index 0000000..bbe20e6
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/uncompress.h
@@ -0,0 +1,9 @@
+#ifndef __MACH_UNCOMPRESS_H
+#define __MACH_UNCOMPRESS_H
+
+#define putc(c)
+#define flush()
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/vmalloc.h b/arch/arm/mach-highbank/include/mach/vmalloc.h
new file mode 100644
index 0000000..1a3e398
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/vmalloc.h
@@ -0,0 +1,6 @@
+#ifndef __MACH_VMALLOC_H
+#define __MACH_VMALLOC_H
+
+#define VMALLOC_END 0xFEE00000UL
+
+#endif
diff --git a/arch/arm/mach-highbank/sysregs.h b/arch/arm/mach-highbank/sysregs.h
new file mode 100644
index 0000000..98ce973
--- /dev/null
+++ b/arch/arm/mach-highbank/sysregs.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright 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/>.
+ */
+#ifndef _MACH_HIGHBANK__SYSREGS_H_
+#define _MACH_HIGHBANK__SYSREGS_H_
+
+extern void __iomem *sregs_base;
+
+#define HB_SREG_A9_PWR_REQ 0xf00
+#define HB_SREG_A9_BOOT_STAT 0xf04
+#define HB_SREG_A9_BOOT_DATA 0xf08
+
+#define HB_PWR_SUSPEND 0
+#define HB_PWR_SOFT_RESET 1
+#define HB_PWR_HARD_RESET 2
+#define HB_PWR_SHUTDOWN 3
+
+#endif
diff --git a/arch/arm/mach-highbank/system.c b/arch/arm/mach-highbank/system.c
new file mode 100644
index 0000000..f8d1419
--- /dev/null
+++ b/arch/arm/mach-highbank/system.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 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/io.h>
+#include <asm/smp_scu.h>
+#include <asm/proc-fns.h>
+
+#include "core.h"
+#include "sysregs.h"
+
+void arch_reset(char mode, const char *cmd)
+{
+ if (mode == 'h')
+ writel(HB_PWR_HARD_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
+ else
+ writel(HB_PWR_SOFT_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
+
+ scu_power_mode(a9_base_addr, SCU_PM_POWEROFF);
+ cpu_do_idle();
+}
+
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 88633fe..7d5fff7 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -822,7 +822,7 @@ config CACHE_L2X0
REALVIEW_EB_A9MP || SOC_IMX35 || SOC_IMX31 || MACH_REALVIEW_PBX || \
ARCH_NOMADIK || ARCH_OMAP4 || ARCH_EXYNOS4 || ARCH_TEGRA || \
ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || ARCH_SHMOBILE || \
- ARCH_PRIMA2 || ARCH_ZYNQ || ARCH_CNS3XXX
+ ARCH_PRIMA2 || ARCH_ZYNQ || ARCH_CNS3XXX || ARCH_HIGHBANK
default y
select OUTER_CACHE
select OUTER_CACHE_SYNC
--
1.7.4.1
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