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-rw-r--r--arch/arm/mach-mvebu/Kconfig13
-rw-r--r--arch/arm/mach-mvebu/Makefile4
-rw-r--r--arch/arm/mach-mvebu/armada-370-xp.h2
-rw-r--r--arch/arm/mach-mvebu/board-v7.c22
-rw-r--r--arch/arm/mach-mvebu/board.h5
-rw-r--r--arch/arm/mach-mvebu/coherency_ll.S10
-rw-r--r--arch/arm/mach-mvebu/common.h3
-rw-r--r--arch/arm/mach-mvebu/cpu-reset.c2
-rw-r--r--arch/arm/mach-mvebu/headsmp-a9.S15
-rw-r--r--arch/arm/mach-mvebu/hotplug.c31
-rw-r--r--arch/arm/mach-mvebu/kirkwood.c3
-rw-r--r--arch/arm/mach-mvebu/mvebu-soc-id.c21
-rw-r--r--arch/arm/mach-mvebu/netxbig.c191
-rw-r--r--arch/arm/mach-mvebu/platsmp-a9.c45
-rw-r--r--arch/arm/mach-mvebu/platsmp.c49
-rw-r--r--arch/arm/mach-mvebu/pmsu.c438
-rw-r--r--arch/arm/mach-mvebu/pmsu.h5
-rw-r--r--arch/arm/mach-mvebu/pmsu_ll.S36
-rw-r--r--arch/arm/mach-mvebu/system-controller.c50
19 files changed, 802 insertions, 143 deletions
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index b9bc599a5fd0..c1e4567a5ab3 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -14,11 +14,15 @@ menuconfig ARCH_MVEBU
if ARCH_MVEBU
+config MACH_MVEBU_ANY
+ bool
+
config MACH_MVEBU_V7
bool
select ARMADA_370_XP_TIMER
select CACHE_L2X0
select ARM_CPU_SUSPEND
+ select MACH_MVEBU_ANY
config MACH_ARMADA_370
bool "Marvell Armada 370 boards" if ARCH_MULTI_V7
@@ -75,6 +79,7 @@ config MACH_DOVE
select CACHE_L2X0
select CPU_PJ4
select DOVE_CLK
+ select MACH_MVEBU_ANY
select ORION_IRQCHIP
select ORION_TIMER
select PINCTRL_DOVE
@@ -87,6 +92,7 @@ config MACH_KIRKWOOD
select ARCH_REQUIRE_GPIOLIB
select CPU_FEROCEON
select KIRKWOOD_CLK
+ select MACH_MVEBU_ANY
select ORION_IRQCHIP
select ORION_TIMER
select PCI
@@ -96,4 +102,11 @@ config MACH_KIRKWOOD
Say 'Y' here if you want your kernel to support boards based
on the Marvell Kirkwood device tree.
+config MACH_NETXBIG
+ bool "LaCie 2Big and 5Big Network v2"
+ depends on MACH_KIRKWOOD
+ help
+ Say 'Y' here if you want your kernel to support the
+ LaCie 2Big and 5Big Network v2
+
endif
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 1636cdbef01a..e24136b42765 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -4,13 +4,13 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
AFLAGS_coherency_ll.o := -Wa,-march=armv7-a
CFLAGS_pmsu.o := -march=armv7-a
-obj-y += system-controller.o mvebu-soc-id.o
+obj-$(CONFIG_MACH_MVEBU_ANY) += system-controller.o mvebu-soc-id.o
ifeq ($(CONFIG_MACH_MVEBU_V7),y)
obj-y += cpu-reset.o board-v7.o coherency.o coherency_ll.o pmsu.o pmsu_ll.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o platsmp-a9.o headsmp-a9.o
-obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
endif
obj-$(CONFIG_MACH_DOVE) += dove.o
obj-$(CONFIG_MACH_KIRKWOOD) += kirkwood.o kirkwood-pm.o
+obj-$(CONFIG_MACH_NETXBIG) += netxbig.o
diff --git a/arch/arm/mach-mvebu/armada-370-xp.h b/arch/arm/mach-mvebu/armada-370-xp.h
index c3465f5b1250..84cd90d9b860 100644
--- a/arch/arm/mach-mvebu/armada-370-xp.h
+++ b/arch/arm/mach-mvebu/armada-370-xp.h
@@ -24,4 +24,6 @@ void armada_xp_secondary_startup(void);
extern struct smp_operations armada_xp_smp_ops;
#endif
+int armada_370_xp_pmsu_idle_enter(unsigned long deepidle);
+
#endif /* __MACH_ARMADA_370_XP_H */
diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
index b2524d689f21..6478626e3ff6 100644
--- a/arch/arm/mach-mvebu/board-v7.c
+++ b/arch/arm/mach-mvebu/board-v7.c
@@ -34,14 +34,14 @@
#include "coherency.h"
#include "mvebu-soc-id.h"
+static void __iomem *scu_base;
+
/*
* Enables the SCU when available. Obviously, this is only useful on
* Cortex-A based SOCs, not on PJ4B based ones.
*/
static void __init mvebu_scu_enable(void)
{
- void __iomem *scu_base;
-
struct device_node *np =
of_find_compatible_node(NULL, NULL, "arm,cortex-a9-scu");
if (np) {
@@ -51,6 +51,11 @@ static void __init mvebu_scu_enable(void)
}
}
+void __iomem *mvebu_get_scu_base(void)
+{
+ return scu_base;
+}
+
/*
* Early versions of Armada 375 SoC have a bug where the BootROM
* leaves an external data abort pending. The kernel is hit by this
@@ -125,8 +130,16 @@ static void __init thermal_quirk(void)
{
struct device_node *np;
u32 dev, rev;
+ int res;
- if (mvebu_get_soc_id(&dev, &rev) == 0 && rev > ARMADA_375_Z1_REV)
+ /*
+ * The early SoC Z1 revision needs a quirk to be applied in order
+ * for the thermal controller to work properly. This quirk breaks
+ * the thermal support if applied on a SoC that doesn't need it,
+ * so we enforce the SoC revision to be known.
+ */
+ res = mvebu_get_soc_id(&dev, &rev);
+ if (res < 0 || (res == 0 && rev > ARMADA_375_Z1_REV))
return;
for_each_compatible_node(np, NULL, "marvell,armada375-thermal") {
@@ -160,7 +173,8 @@ static void __init thermal_quirk(void)
/*
* The thermal controller needs some quirk too, so let's change
- * the compatible string to reflect this.
+ * the compatible string to reflect this and allow the driver
+ * the take the necessary action.
*/
prop = kzalloc(sizeof(*prop), GFP_KERNEL);
prop->name = kstrdup("compatible", GFP_KERNEL);
diff --git a/arch/arm/mach-mvebu/board.h b/arch/arm/mach-mvebu/board.h
index 9c7bb4386f8b..98e32cc2ef3d 100644
--- a/arch/arm/mach-mvebu/board.h
+++ b/arch/arm/mach-mvebu/board.h
@@ -13,4 +13,9 @@
#ifndef __ARCH_MVEBU_BOARD_H
#define __ARCH_MVEBU_BOARD_H
+#ifdef CONFIG_MACH_NETXBIG
+void netxbig_init(void);
+#else
+static inline void netxbig_init(void) {};
+#endif
#endif
diff --git a/arch/arm/mach-mvebu/coherency_ll.S b/arch/arm/mach-mvebu/coherency_ll.S
index 510c29e079ca..f5d881b5d0f7 100644
--- a/arch/arm/mach-mvebu/coherency_ll.S
+++ b/arch/arm/mach-mvebu/coherency_ll.S
@@ -46,7 +46,7 @@ ENTRY(ll_get_coherency_base)
ldr r1, =coherency_base
ldr r1, [r1]
2:
- mov pc, lr
+ ret lr
ENDPROC(ll_get_coherency_base)
/*
@@ -63,7 +63,7 @@ ENTRY(ll_get_coherency_cpumask)
mov r2, #(1 << 24)
lsl r3, r2, r3
ARM_BE8(rev r3, r3)
- mov pc, lr
+ ret lr
ENDPROC(ll_get_coherency_cpumask)
/*
@@ -94,7 +94,7 @@ ENTRY(ll_add_cpu_to_smp_group)
strex r1, r2, [r0]
cmp r1, #0
bne 1b
- mov pc, lr
+ ret lr
ENDPROC(ll_add_cpu_to_smp_group)
ENTRY(ll_enable_coherency)
@@ -118,7 +118,7 @@ ENTRY(ll_enable_coherency)
bne 1b
dsb
mov r0, #0
- mov pc, lr
+ ret lr
ENDPROC(ll_enable_coherency)
ENTRY(ll_disable_coherency)
@@ -141,7 +141,7 @@ ENTRY(ll_disable_coherency)
cmp r1, #0
bne 1b
dsb
- mov pc, lr
+ ret lr
ENDPROC(ll_disable_coherency)
.align 2
diff --git a/arch/arm/mach-mvebu/common.h b/arch/arm/mach-mvebu/common.h
index b67fb7a10d8b..3ccb40c3bf94 100644
--- a/arch/arm/mach-mvebu/common.h
+++ b/arch/arm/mach-mvebu/common.h
@@ -21,7 +21,8 @@ void mvebu_restart(enum reboot_mode mode, const char *cmd);
int mvebu_cpu_reset_deassert(int cpu);
void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr);
void mvebu_system_controller_set_cpu_boot_addr(void *boot_addr);
+int mvebu_system_controller_get_soc_id(u32 *dev, u32 *rev);
-void armada_xp_cpu_die(unsigned int cpu);
+void __iomem *mvebu_get_scu_base(void);
#endif
diff --git a/arch/arm/mach-mvebu/cpu-reset.c b/arch/arm/mach-mvebu/cpu-reset.c
index 4a8f9eebebea..60fb53787004 100644
--- a/arch/arm/mach-mvebu/cpu-reset.c
+++ b/arch/arm/mach-mvebu/cpu-reset.c
@@ -67,7 +67,7 @@ static int mvebu_cpu_reset_map(struct device_node *np, int res_idx)
return 0;
}
-int __init mvebu_cpu_reset_init(void)
+static int __init mvebu_cpu_reset_init(void)
{
struct device_node *np;
int res_idx;
diff --git a/arch/arm/mach-mvebu/headsmp-a9.S b/arch/arm/mach-mvebu/headsmp-a9.S
index da5bb292b91c..be51c998c0cd 100644
--- a/arch/arm/mach-mvebu/headsmp-a9.S
+++ b/arch/arm/mach-mvebu/headsmp-a9.S
@@ -18,21 +18,6 @@
#include <asm/assembler.h>
__CPUINIT
-#define CPU_RESUME_ADDR_REG 0xf10182d4
-
-.global armada_375_smp_cpu1_enable_code_start
-.global armada_375_smp_cpu1_enable_code_end
-
-armada_375_smp_cpu1_enable_code_start:
-ARM_BE8(setend be)
- adr r0, 1f
- ldr r0, [r0]
- ldr r1, [r0]
-ARM_BE8(rev r1, r1)
- mov pc, r1
-1:
- .word CPU_RESUME_ADDR_REG
-armada_375_smp_cpu1_enable_code_end:
ENTRY(mvebu_cortex_a9_secondary_startup)
ARM_BE8(setend be)
diff --git a/arch/arm/mach-mvebu/hotplug.c b/arch/arm/mach-mvebu/hotplug.c
deleted file mode 100644
index d95e91047168..000000000000
--- a/arch/arm/mach-mvebu/hotplug.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Symmetric Multi Processing (SMP) support for Armada XP
- *
- * Copyright (C) 2012 Marvell
- *
- * Lior Amsalem <alior@marvell.com>
- * Gregory CLEMENT <gregory.clement@free-electrons.com>
- * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-#include <asm/proc-fns.h>
-#include "common.h"
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void __ref armada_xp_cpu_die(unsigned int cpu)
-{
- cpu_do_idle();
-
- /* We should never return from idle */
- panic("mvebu: cpu %d unexpectedly exit from shutdown\n", cpu);
-}
diff --git a/arch/arm/mach-mvebu/kirkwood.c b/arch/arm/mach-mvebu/kirkwood.c
index 46f105913c84..6b5310828eb2 100644
--- a/arch/arm/mach-mvebu/kirkwood.c
+++ b/arch/arm/mach-mvebu/kirkwood.c
@@ -180,6 +180,9 @@ static void __init kirkwood_dt_init(void)
kirkwood_pm_init();
kirkwood_dt_eth_fixup();
+ if (of_machine_is_compatible("lacie,netxbig"))
+ netxbig_init();
+
of_platform_populate(NULL, of_default_bus_match_table, auxdata, NULL);
}
diff --git a/arch/arm/mach-mvebu/mvebu-soc-id.c b/arch/arm/mach-mvebu/mvebu-soc-id.c
index d0f35b4d4a23..a99434bcee84 100644
--- a/arch/arm/mach-mvebu/mvebu-soc-id.c
+++ b/arch/arm/mach-mvebu/mvebu-soc-id.c
@@ -25,6 +25,7 @@
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
+#include "common.h"
#include "mvebu-soc-id.h"
#define PCIE_DEV_ID_OFF 0x0
@@ -51,10 +52,10 @@ int mvebu_get_soc_id(u32 *dev, u32 *rev)
*rev = soc_rev;
return 0;
} else
- return -1;
+ return -ENODEV;
}
-static int __init mvebu_soc_id_init(void)
+static int __init get_soc_id_by_pci(void)
{
struct device_node *np;
int ret = 0;
@@ -129,6 +130,22 @@ clk_err:
return ret;
}
+
+static int __init mvebu_soc_id_init(void)
+{
+
+ /*
+ * First try to get the ID and the revision by the system
+ * register and use PCI registers only if it is not possible
+ */
+ if (!mvebu_system_controller_get_soc_id(&soc_dev_id, &soc_rev)) {
+ is_id_valid = true;
+ pr_info("MVEBU SoC ID=0x%X, Rev=0x%X\n", soc_dev_id, soc_rev);
+ return 0;
+ }
+
+ return get_soc_id_by_pci();
+}
early_initcall(mvebu_soc_id_init);
static int __init mvebu_soc_device(void)
diff --git a/arch/arm/mach-mvebu/netxbig.c b/arch/arm/mach-mvebu/netxbig.c
new file mode 100644
index 000000000000..94b11b6585a4
--- /dev/null
+++ b/arch/arm/mach-mvebu/netxbig.c
@@ -0,0 +1,191 @@
+/*
+ * arch/arm/mach-mvbu/board-netxbig.c
+ *
+ * LaCie 2Big and 5Big Network v2 board setup
+ *
+ * Copyright (C) 2010 Simon Guinot <sguinot@lacie.com>
+ *
+ * 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.
+ *
+ * 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 <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/leds-kirkwood-netxbig.h>
+#include "common.h"
+
+/*****************************************************************************
+ * GPIO extension LEDs
+ ****************************************************************************/
+
+/*
+ * The LEDs are controlled by a CPLD and can be configured through a GPIO
+ * extension bus:
+ *
+ * - address register : bit [0-2] -> GPIO [47-49]
+ * - data register : bit [0-2] -> GPIO [44-46]
+ * - enable register : GPIO 29
+ */
+
+static int netxbig_v2_gpio_ext_addr[] = { 47, 48, 49 };
+static int netxbig_v2_gpio_ext_data[] = { 44, 45, 46 };
+
+static struct netxbig_gpio_ext netxbig_v2_gpio_ext = {
+ .addr = netxbig_v2_gpio_ext_addr,
+ .num_addr = ARRAY_SIZE(netxbig_v2_gpio_ext_addr),
+ .data = netxbig_v2_gpio_ext_data,
+ .num_data = ARRAY_SIZE(netxbig_v2_gpio_ext_data),
+ .enable = 29,
+};
+
+/*
+ * Address register selection:
+ *
+ * addr | register
+ * ----------------------------
+ * 0 | front LED
+ * 1 | front LED brightness
+ * 2 | SATA LED brightness
+ * 3 | SATA0 LED
+ * 4 | SATA1 LED
+ * 5 | SATA2 LED
+ * 6 | SATA3 LED
+ * 7 | SATA4 LED
+ *
+ * Data register configuration:
+ *
+ * data | LED brightness
+ * -------------------------------------------------
+ * 0 | min (off)
+ * - | -
+ * 7 | max
+ *
+ * data | front LED mode
+ * -------------------------------------------------
+ * 0 | fix off
+ * 1 | fix blue on
+ * 2 | fix red on
+ * 3 | blink blue on=1 sec and blue off=1 sec
+ * 4 | blink red on=1 sec and red off=1 sec
+ * 5 | blink blue on=2.5 sec and red on=0.5 sec
+ * 6 | blink blue on=1 sec and red on=1 sec
+ * 7 | blink blue on=0.5 sec and blue off=2.5 sec
+ *
+ * data | SATA LED mode
+ * -------------------------------------------------
+ * 0 | fix off
+ * 1 | SATA activity blink
+ * 2 | fix red on
+ * 3 | blink blue on=1 sec and blue off=1 sec
+ * 4 | blink red on=1 sec and red off=1 sec
+ * 5 | blink blue on=2.5 sec and red on=0.5 sec
+ * 6 | blink blue on=1 sec and red on=1 sec
+ * 7 | fix blue on
+ */
+
+static int netxbig_v2_red_mled[NETXBIG_LED_MODE_NUM] = {
+ [NETXBIG_LED_OFF] = 0,
+ [NETXBIG_LED_ON] = 2,
+ [NETXBIG_LED_SATA] = NETXBIG_LED_INVALID_MODE,
+ [NETXBIG_LED_TIMER1] = 4,
+ [NETXBIG_LED_TIMER2] = NETXBIG_LED_INVALID_MODE,
+};
+
+static int netxbig_v2_blue_pwr_mled[NETXBIG_LED_MODE_NUM] = {
+ [NETXBIG_LED_OFF] = 0,
+ [NETXBIG_LED_ON] = 1,
+ [NETXBIG_LED_SATA] = NETXBIG_LED_INVALID_MODE,
+ [NETXBIG_LED_TIMER1] = 3,
+ [NETXBIG_LED_TIMER2] = 7,
+};
+
+static int netxbig_v2_blue_sata_mled[NETXBIG_LED_MODE_NUM] = {
+ [NETXBIG_LED_OFF] = 0,
+ [NETXBIG_LED_ON] = 7,
+ [NETXBIG_LED_SATA] = 1,
+ [NETXBIG_LED_TIMER1] = 3,
+ [NETXBIG_LED_TIMER2] = NETXBIG_LED_INVALID_MODE,
+};
+
+static struct netxbig_led_timer netxbig_v2_led_timer[] = {
+ [0] = {
+ .delay_on = 500,
+ .delay_off = 500,
+ .mode = NETXBIG_LED_TIMER1,
+ },
+ [1] = {
+ .delay_on = 500,
+ .delay_off = 1000,
+ .mode = NETXBIG_LED_TIMER2,
+ },
+};
+
+#define NETXBIG_LED(_name, maddr, mval, baddr) \
+ { .name = _name, \
+ .mode_addr = maddr, \
+ .mode_val = mval, \
+ .bright_addr = baddr }
+
+static struct netxbig_led net2big_v2_leds_ctrl[] = {
+ NETXBIG_LED("net2big-v2:blue:power", 0, netxbig_v2_blue_pwr_mled, 1),
+ NETXBIG_LED("net2big-v2:red:power", 0, netxbig_v2_red_mled, 1),
+ NETXBIG_LED("net2big-v2:blue:sata0", 3, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net2big-v2:red:sata0", 3, netxbig_v2_red_mled, 2),
+ NETXBIG_LED("net2big-v2:blue:sata1", 4, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net2big-v2:red:sata1", 4, netxbig_v2_red_mled, 2),
+};
+
+static struct netxbig_led_platform_data net2big_v2_leds_data = {
+ .gpio_ext = &netxbig_v2_gpio_ext,
+ .timer = netxbig_v2_led_timer,
+ .num_timer = ARRAY_SIZE(netxbig_v2_led_timer),
+ .leds = net2big_v2_leds_ctrl,
+ .num_leds = ARRAY_SIZE(net2big_v2_leds_ctrl),
+};
+
+static struct netxbig_led net5big_v2_leds_ctrl[] = {
+ NETXBIG_LED("net5big-v2:blue:power", 0, netxbig_v2_blue_pwr_mled, 1),
+ NETXBIG_LED("net5big-v2:red:power", 0, netxbig_v2_red_mled, 1),
+ NETXBIG_LED("net5big-v2:blue:sata0", 3, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net5big-v2:red:sata0", 3, netxbig_v2_red_mled, 2),
+ NETXBIG_LED("net5big-v2:blue:sata1", 4, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net5big-v2:red:sata1", 4, netxbig_v2_red_mled, 2),
+ NETXBIG_LED("net5big-v2:blue:sata2", 5, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net5big-v2:red:sata2", 5, netxbig_v2_red_mled, 2),
+ NETXBIG_LED("net5big-v2:blue:sata3", 6, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net5big-v2:red:sata3", 6, netxbig_v2_red_mled, 2),
+ NETXBIG_LED("net5big-v2:blue:sata4", 7, netxbig_v2_blue_sata_mled, 2),
+ NETXBIG_LED("net5big-v2:red:sata4", 7, netxbig_v2_red_mled, 2),
+};
+
+static struct netxbig_led_platform_data net5big_v2_leds_data = {
+ .gpio_ext = &netxbig_v2_gpio_ext,
+ .timer = netxbig_v2_led_timer,
+ .num_timer = ARRAY_SIZE(netxbig_v2_led_timer),
+ .leds = net5big_v2_leds_ctrl,
+ .num_leds = ARRAY_SIZE(net5big_v2_leds_ctrl),
+};
+
+static struct platform_device netxbig_v2_leds = {
+ .name = "leds-netxbig",
+ .id = -1,
+ .dev = {
+ .platform_data = &net2big_v2_leds_data,
+ },
+};
+
+void __init netxbig_init(void)
+{
+
+ if (of_machine_is_compatible("lacie,net5big_v2"))
+ netxbig_v2_leds.dev.platform_data = &net5big_v2_leds_data;
+ platform_device_register(&netxbig_v2_leds);
+}
diff --git a/arch/arm/mach-mvebu/platsmp-a9.c b/arch/arm/mach-mvebu/platsmp-a9.c
index 96c2c59e34b6..47a71a924b96 100644
--- a/arch/arm/mach-mvebu/platsmp-a9.c
+++ b/arch/arm/mach-mvebu/platsmp-a9.c
@@ -20,33 +20,8 @@
#include <asm/smp_scu.h>
#include <asm/smp_plat.h>
#include "common.h"
-#include "mvebu-soc-id.h"
#include "pmsu.h"
-#define CRYPT0_ENG_ID 41
-#define CRYPT0_ENG_ATTR 0x1
-#define SRAM_PHYS_BASE 0xFFFF0000
-
-#define BOOTROM_BASE 0xFFF00000
-#define BOOTROM_SIZE 0x100000
-
-extern unsigned char armada_375_smp_cpu1_enable_code_end;
-extern unsigned char armada_375_smp_cpu1_enable_code_start;
-
-void armada_375_smp_cpu1_enable_wa(void)
-{
- void __iomem *sram_virt_base;
-
- mvebu_mbus_del_window(BOOTROM_BASE, BOOTROM_SIZE);
- mvebu_mbus_add_window_by_id(CRYPT0_ENG_ID, CRYPT0_ENG_ATTR,
- SRAM_PHYS_BASE, SZ_64K);
- sram_virt_base = ioremap(SRAM_PHYS_BASE, SZ_64K);
-
- memcpy(sram_virt_base, &armada_375_smp_cpu1_enable_code_start,
- &armada_375_smp_cpu1_enable_code_end
- - &armada_375_smp_cpu1_enable_code_start);
-}
-
extern void mvebu_cortex_a9_secondary_startup(void);
static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
@@ -63,21 +38,10 @@ static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
* address.
*/
hw_cpu = cpu_logical_map(cpu);
-
- if (of_machine_is_compatible("marvell,armada375")) {
- u32 dev, rev;
-
- if (mvebu_get_soc_id(&dev, &rev) == 0 &&
- rev == ARMADA_375_Z1_REV)
- armada_375_smp_cpu1_enable_wa();
-
+ if (of_machine_is_compatible("marvell,armada375"))
mvebu_system_controller_set_cpu_boot_addr(mvebu_cortex_a9_secondary_startup);
- }
- else {
- mvebu_pmsu_set_cpu_boot_addr(hw_cpu,
- mvebu_cortex_a9_secondary_startup);
- }
-
+ else
+ mvebu_pmsu_set_cpu_boot_addr(hw_cpu, mvebu_cortex_a9_secondary_startup);
smp_wmb();
ret = mvebu_cpu_reset_deassert(hw_cpu);
if (ret) {
@@ -91,9 +55,6 @@ static int __cpuinit mvebu_cortex_a9_boot_secondary(unsigned int cpu,
static struct smp_operations mvebu_cortex_a9_smp_ops __initdata = {
.smp_boot_secondary = mvebu_cortex_a9_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
- .cpu_die = armada_xp_cpu_die,
-#endif
};
CPU_METHOD_OF_DECLARE(mvebu_armada_375_smp, "marvell,armada-375-smp",
diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c
index 88b976b31719..895dc373c8a1 100644
--- a/arch/arm/mach-mvebu/platsmp.c
+++ b/arch/arm/mach-mvebu/platsmp.c
@@ -67,6 +67,7 @@ static void __init set_secondary_cpus_clock(void)
if (!cpu_clk)
return;
clk_set_rate(cpu_clk, rate);
+ clk_prepare_enable(cpu_clk);
}
}
@@ -78,6 +79,17 @@ static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
hw_cpu = cpu_logical_map(cpu);
mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_xp_secondary_startup);
+
+ /*
+ * This is needed to wake up CPUs in the offline state after
+ * using CPU hotplug.
+ */
+ arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+
+ /*
+ * This is needed to take secondary CPUs out of reset on the
+ * initial boot.
+ */
ret = mvebu_cpu_reset_deassert(hw_cpu);
if (ret) {
pr_warn("unable to boot CPU: %d\n", ret);
@@ -87,6 +99,19 @@ static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
return 0;
}
+/*
+ * When a CPU is brought back online, either through CPU hotplug, or
+ * because of the boot of a kexec'ed kernel, the PMSU configuration
+ * for this CPU might be in the deep idle state, preventing this CPU
+ * from receiving interrupts. Here, we therefore take out the current
+ * CPU from this state, which was entered by armada_xp_cpu_die()
+ * below.
+ */
+static void armada_xp_secondary_init(unsigned int cpu)
+{
+ mvebu_v7_pmsu_idle_exit();
+}
+
static void __init armada_xp_smp_init_cpus(void)
{
unsigned int ncores = num_possible_cpus();
@@ -122,12 +147,36 @@ static void __init armada_xp_smp_prepare_cpus(unsigned int max_cpus)
panic("The address for the BootROM is incorrect");
}
+#ifdef CONFIG_HOTPLUG_CPU
+static void armada_xp_cpu_die(unsigned int cpu)
+{
+ /*
+ * CPU hotplug is implemented by putting offline CPUs into the
+ * deep idle sleep state.
+ */
+ armada_370_xp_pmsu_idle_enter(true);
+}
+
+/*
+ * We need a dummy function, so that platform_can_cpu_hotplug() knows
+ * we support CPU hotplug. However, the function does not need to do
+ * anything, because CPUs going offline can enter the deep idle state
+ * by themselves, without any help from a still alive CPU.
+ */
+static int armada_xp_cpu_kill(unsigned int cpu)
+{
+ return 1;
+}
+#endif
+
struct smp_operations armada_xp_smp_ops __initdata = {
.smp_init_cpus = armada_xp_smp_init_cpus,
.smp_prepare_cpus = armada_xp_smp_prepare_cpus,
.smp_boot_secondary = armada_xp_boot_secondary,
+ .smp_secondary_init = armada_xp_secondary_init,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_die = armada_xp_cpu_die,
+ .cpu_kill = armada_xp_cpu_kill,
#endif
};
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index 25aa8237d668..8a70a51533fd 100644
--- a/arch/arm/mach-mvebu/pmsu.c
+++ b/arch/arm/mach-mvebu/pmsu.c
@@ -18,22 +18,29 @@
#define pr_fmt(fmt) "mvebu-pmsu: " fmt
+#include <linux/clk.h>
#include <linux/cpu_pm.h>
-#include <linux/kernel.h>
+#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/of_address.h>
#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mbus.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
-#include <linux/smp.h>
+#include <linux/pm_opp.h>
#include <linux/resource.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
#include <asm/cacheflush.h>
#include <asm/cp15.h>
+#include <asm/smp_scu.h>
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include <asm/tlbflush.h>
#include "common.h"
+#include "armada-370-xp.h"
-static void __iomem *pmsu_mp_base;
#define PMSU_BASE_OFFSET 0x100
#define PMSU_REG_SIZE 0x1000
@@ -57,20 +64,45 @@ static void __iomem *pmsu_mp_base;
#define PMSU_STATUS_AND_MASK_IRQ_MASK BIT(24)
#define PMSU_STATUS_AND_MASK_FIQ_MASK BIT(25)
+#define PMSU_EVENT_STATUS_AND_MASK(cpu) ((cpu * 0x100) + 0x120)
+#define PMSU_EVENT_STATUS_AND_MASK_DFS_DONE BIT(1)
+#define PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK BIT(17)
+
#define PMSU_BOOT_ADDR_REDIRECT_OFFSET(cpu) ((cpu * 0x100) + 0x124)
/* PMSU fabric registers */
#define L2C_NFABRIC_PM_CTL 0x4
#define L2C_NFABRIC_PM_CTL_PWR_DOWN BIT(20)
+/* PMSU delay registers */
+#define PMSU_POWERDOWN_DELAY 0xF04
+#define PMSU_POWERDOWN_DELAY_PMU BIT(1)
+#define PMSU_POWERDOWN_DELAY_MASK 0xFFFE
+#define PMSU_DFLT_ARMADA38X_DELAY 0x64
+
+/* CA9 MPcore SoC Control registers */
+
+#define MPCORE_RESET_CTL 0x64
+#define MPCORE_RESET_CTL_L2 BIT(0)
+#define MPCORE_RESET_CTL_DEBUG BIT(16)
+
+#define SRAM_PHYS_BASE 0xFFFF0000
+#define BOOTROM_BASE 0xFFF00000
+#define BOOTROM_SIZE 0x100000
+
+#define ARMADA_370_CRYPT0_ENG_TARGET 0x9
+#define ARMADA_370_CRYPT0_ENG_ATTR 0x1
+
extern void ll_disable_coherency(void);
extern void ll_enable_coherency(void);
extern void armada_370_xp_cpu_resume(void);
+extern void armada_38x_cpu_resume(void);
-static struct platform_device armada_xp_cpuidle_device = {
- .name = "cpuidle-armada-370-xp",
-};
+static phys_addr_t pmsu_mp_phys_base;
+static void __iomem *pmsu_mp_base;
+
+static void *mvebu_cpu_resume;
static struct of_device_id of_pmsu_table[] = {
{ .compatible = "marvell,armada-370-pmsu", },
@@ -85,7 +117,49 @@ void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr)
PMSU_BOOT_ADDR_REDIRECT_OFFSET(hw_cpu));
}
-static int __init armada_370_xp_pmsu_init(void)
+extern unsigned char mvebu_boot_wa_start;
+extern unsigned char mvebu_boot_wa_end;
+
+/*
+ * This function sets up the boot address workaround needed for SMP
+ * boot on Armada 375 Z1 and cpuidle on Armada 370. It unmaps the
+ * BootROM Mbus window, and instead remaps a crypto SRAM into which a
+ * custom piece of code is copied to replace the problematic BootROM.
+ */
+int mvebu_setup_boot_addr_wa(unsigned int crypto_eng_target,
+ unsigned int crypto_eng_attribute,
+ phys_addr_t resume_addr_reg)
+{
+ void __iomem *sram_virt_base;
+ u32 code_len = &mvebu_boot_wa_end - &mvebu_boot_wa_start;
+
+ mvebu_mbus_del_window(BOOTROM_BASE, BOOTROM_SIZE);
+ mvebu_mbus_add_window_by_id(crypto_eng_target, crypto_eng_attribute,
+ SRAM_PHYS_BASE, SZ_64K);
+
+ sram_virt_base = ioremap(SRAM_PHYS_BASE, SZ_64K);
+ if (!sram_virt_base) {
+ pr_err("Unable to map SRAM to setup the boot address WA\n");
+ return -ENOMEM;
+ }
+
+ memcpy(sram_virt_base, &mvebu_boot_wa_start, code_len);
+
+ /*
+ * The last word of the code copied in SRAM must contain the
+ * physical base address of the PMSU register. We
+ * intentionally store this address in the native endianness
+ * of the system.
+ */
+ __raw_writel((unsigned long)resume_addr_reg,
+ sram_virt_base + code_len - 4);
+
+ iounmap(sram_virt_base);
+
+ return 0;
+}
+
+static int __init mvebu_v7_pmsu_init(void)
{
struct device_node *np;
struct resource res;
@@ -116,6 +190,8 @@ static int __init armada_370_xp_pmsu_init(void)
goto out;
}
+ pmsu_mp_phys_base = res.start;
+
pmsu_mp_base = ioremap(res.start, resource_size(&res));
if (!pmsu_mp_base) {
pr_err("unable to map registers\n");
@@ -129,7 +205,7 @@ static int __init armada_370_xp_pmsu_init(void)
return ret;
}
-static void armada_370_xp_pmsu_enable_l2_powerdown_onidle(void)
+static void mvebu_v7_pmsu_enable_l2_powerdown_onidle(void)
{
u32 reg;
@@ -142,14 +218,20 @@ static void armada_370_xp_pmsu_enable_l2_powerdown_onidle(void)
writel(reg, pmsu_mp_base + L2C_NFABRIC_PM_CTL);
}
+enum pmsu_idle_prepare_flags {
+ PMSU_PREPARE_NORMAL = 0,
+ PMSU_PREPARE_DEEP_IDLE = BIT(0),
+ PMSU_PREPARE_SNOOP_DISABLE = BIT(1),
+};
+
/* No locking is needed because we only access per-CPU registers */
-void armada_370_xp_pmsu_idle_prepare(bool deepidle)
+static int mvebu_v7_pmsu_idle_prepare(unsigned long flags)
{
unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
u32 reg;
if (pmsu_mp_base == NULL)
- return;
+ return -EINVAL;
/*
* Adjust the PMSU configuration to wait for WFI signal, enable
@@ -167,22 +249,34 @@ void armada_370_xp_pmsu_idle_prepare(bool deepidle)
reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
/* ask HW to power down the L2 Cache if needed */
- if (deepidle)
+ if (flags & PMSU_PREPARE_DEEP_IDLE)
reg |= PMSU_CONTROL_AND_CONFIG_L2_PWDDN;
/* request power down */
reg |= PMSU_CONTROL_AND_CONFIG_PWDDN_REQ;
writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
- /* Disable snoop disable by HW - SW is taking care of it */
- reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
- reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP;
- writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+ if (flags & PMSU_PREPARE_SNOOP_DISABLE) {
+ /* Disable snoop disable by HW - SW is taking care of it */
+ reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+ reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP;
+ writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu));
+ }
+
+ return 0;
}
-static noinline int do_armada_370_xp_cpu_suspend(unsigned long deepidle)
+int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
{
- armada_370_xp_pmsu_idle_prepare(deepidle);
+ unsigned long flags = PMSU_PREPARE_SNOOP_DISABLE;
+ int ret;
+
+ if (deepidle)
+ flags |= PMSU_PREPARE_DEEP_IDLE;
+
+ ret = mvebu_v7_pmsu_idle_prepare(flags);
+ if (ret)
+ return ret;
v7_exit_coherency_flush(all);
@@ -208,25 +302,50 @@ static noinline int do_armada_370_xp_cpu_suspend(unsigned long deepidle)
"isb "
: : : "r0");
- pr_warn("Failed to suspend the system\n");
+ pr_debug("Failed to suspend the system\n");
return 0;
}
static int armada_370_xp_cpu_suspend(unsigned long deepidle)
{
- return cpu_suspend(deepidle, do_armada_370_xp_cpu_suspend);
+ return cpu_suspend(deepidle, armada_370_xp_pmsu_idle_enter);
+}
+
+static int armada_38x_do_cpu_suspend(unsigned long deepidle)
+{
+ unsigned long flags = 0;
+
+ if (deepidle)
+ flags |= PMSU_PREPARE_DEEP_IDLE;
+
+ mvebu_v7_pmsu_idle_prepare(flags);
+ /*
+ * Already flushed cache, but do it again as the outer cache
+ * functions dirty the cache with spinlocks
+ */
+ v7_exit_coherency_flush(louis);
+
+ scu_power_mode(mvebu_get_scu_base(), SCU_PM_POWEROFF);
+
+ cpu_do_idle();
+
+ return 1;
+}
+
+static int armada_38x_cpu_suspend(unsigned long deepidle)
+{
+ return cpu_suspend(false, armada_38x_do_cpu_suspend);
}
/* No locking is needed because we only access per-CPU registers */
-static noinline void armada_370_xp_pmsu_idle_restore(void)
+void mvebu_v7_pmsu_idle_exit(void)
{
unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
u32 reg;
if (pmsu_mp_base == NULL)
return;
-
/* cancel ask HW to power down the L2 Cache if possible */
reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu));
reg &= ~PMSU_CONTROL_AND_CONFIG_L2_PWDDN;
@@ -241,53 +360,292 @@ static noinline void armada_370_xp_pmsu_idle_restore(void)
writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(hw_cpu));
}
-static int armada_370_xp_cpu_pm_notify(struct notifier_block *self,
+static int mvebu_v7_cpu_pm_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
if (action == CPU_PM_ENTER) {
unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
- mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_370_xp_cpu_resume);
+ mvebu_pmsu_set_cpu_boot_addr(hw_cpu, mvebu_cpu_resume);
} else if (action == CPU_PM_EXIT) {
- armada_370_xp_pmsu_idle_restore();
+ mvebu_v7_pmsu_idle_exit();
}
return NOTIFY_OK;
}
-static struct notifier_block armada_370_xp_cpu_pm_notifier = {
- .notifier_call = armada_370_xp_cpu_pm_notify,
+static struct notifier_block mvebu_v7_cpu_pm_notifier = {
+ .notifier_call = mvebu_v7_cpu_pm_notify,
};
-int __init armada_370_xp_cpu_pm_init(void)
+static struct platform_device mvebu_v7_cpuidle_device;
+
+static __init int armada_370_cpuidle_init(void)
{
struct device_node *np;
+ phys_addr_t redirect_reg;
+
+ np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
+ if (!np)
+ return -ENODEV;
+ of_node_put(np);
/*
- * Check that all the requirements are available to enable
- * cpuidle. So far, it is only supported on Armada XP, cpuidle
- * needs the coherency fabric and the PMSU enabled
+ * On Armada 370, there is "a slow exit process from the deep
+ * idle state due to heavy L1/L2 cache cleanup operations
+ * performed by the BootROM software". To avoid this, we
+ * replace the restart code of the bootrom by a a simple jump
+ * to the boot address. Then the code located at this boot
+ * address will take care of the initialization.
*/
+ redirect_reg = pmsu_mp_phys_base + PMSU_BOOT_ADDR_REDIRECT_OFFSET(0);
+ mvebu_setup_boot_addr_wa(ARMADA_370_CRYPT0_ENG_TARGET,
+ ARMADA_370_CRYPT0_ENG_ATTR,
+ redirect_reg);
- if (!of_machine_is_compatible("marvell,armadaxp"))
- return 0;
+ mvebu_cpu_resume = armada_370_xp_cpu_resume;
+ mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+ mvebu_v7_cpuidle_device.name = "cpuidle-armada-370";
+
+ return 0;
+}
+
+static __init int armada_38x_cpuidle_init(void)
+{
+ struct device_node *np;
+ void __iomem *mpsoc_base;
+ u32 reg;
+
+ np = of_find_compatible_node(NULL, NULL,
+ "marvell,armada-380-coherency-fabric");
+ if (!np)
+ return -ENODEV;
+ of_node_put(np);
+
+ np = of_find_compatible_node(NULL, NULL,
+ "marvell,armada-380-mpcore-soc-ctrl");
+ if (!np)
+ return -ENODEV;
+ mpsoc_base = of_iomap(np, 0);
+ BUG_ON(!mpsoc_base);
+ of_node_put(np);
+
+ /* Set up reset mask when powering down the cpus */
+ reg = readl(mpsoc_base + MPCORE_RESET_CTL);
+ reg |= MPCORE_RESET_CTL_L2;
+ reg |= MPCORE_RESET_CTL_DEBUG;
+ writel(reg, mpsoc_base + MPCORE_RESET_CTL);
+ iounmap(mpsoc_base);
+
+ /* Set up delay */
+ reg = readl(pmsu_mp_base + PMSU_POWERDOWN_DELAY);
+ reg &= ~PMSU_POWERDOWN_DELAY_MASK;
+ reg |= PMSU_DFLT_ARMADA38X_DELAY;
+ reg |= PMSU_POWERDOWN_DELAY_PMU;
+ writel(reg, pmsu_mp_base + PMSU_POWERDOWN_DELAY);
+
+ mvebu_cpu_resume = armada_38x_cpu_resume;
+ mvebu_v7_cpuidle_device.dev.platform_data = armada_38x_cpu_suspend;
+ mvebu_v7_cpuidle_device.name = "cpuidle-armada-38x";
+
+ return 0;
+}
+
+static __init int armada_xp_cpuidle_init(void)
+{
+ struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
if (!np)
- return 0;
+ return -ENODEV;
of_node_put(np);
+ mvebu_cpu_resume = armada_370_xp_cpu_resume;
+ mvebu_v7_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+ mvebu_v7_cpuidle_device.name = "cpuidle-armada-xp";
+
+ return 0;
+}
+
+static int __init mvebu_v7_cpu_pm_init(void)
+{
+ struct device_node *np;
+ int ret;
+
np = of_find_matching_node(NULL, of_pmsu_table);
if (!np)
return 0;
of_node_put(np);
- armada_370_xp_pmsu_enable_l2_powerdown_onidle();
- armada_xp_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
- platform_device_register(&armada_xp_cpuidle_device);
- cpu_pm_register_notifier(&armada_370_xp_cpu_pm_notifier);
+ if (of_machine_is_compatible("marvell,armadaxp"))
+ ret = armada_xp_cpuidle_init();
+ else if (of_machine_is_compatible("marvell,armada370"))
+ ret = armada_370_cpuidle_init();
+ else if (of_machine_is_compatible("marvell,armada380"))
+ ret = armada_38x_cpuidle_init();
+ else
+ return 0;
+
+ if (ret)
+ return ret;
+
+ mvebu_v7_pmsu_enable_l2_powerdown_onidle();
+ platform_device_register(&mvebu_v7_cpuidle_device);
+ cpu_pm_register_notifier(&mvebu_v7_cpu_pm_notifier);
+
+ return 0;
+}
+
+arch_initcall(mvebu_v7_cpu_pm_init);
+early_initcall(mvebu_v7_pmsu_init);
+
+static void mvebu_pmsu_dfs_request_local(void *data)
+{
+ u32 reg;
+ u32 cpu = smp_processor_id();
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ /* Prepare to enter idle */
+ reg = readl(pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+ reg |= PMSU_STATUS_AND_MASK_CPU_IDLE_WAIT |
+ PMSU_STATUS_AND_MASK_IRQ_MASK |
+ PMSU_STATUS_AND_MASK_FIQ_MASK;
+ writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+
+ /* Request the DFS transition */
+ reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(cpu));
+ reg |= PMSU_CONTROL_AND_CONFIG_DFS_REQ;
+ writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(cpu));
+
+ /* The fact of entering idle will trigger the DFS transition */
+ wfi();
+
+ /*
+ * We're back from idle, the DFS transition has completed,
+ * clear the idle wait indication.
+ */
+ reg = readl(pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+ reg &= ~PMSU_STATUS_AND_MASK_CPU_IDLE_WAIT;
+ writel(reg, pmsu_mp_base + PMSU_STATUS_AND_MASK(cpu));
+
+ local_irq_restore(flags);
+}
+
+int mvebu_pmsu_dfs_request(int cpu)
+{
+ unsigned long timeout;
+ int hwcpu = cpu_logical_map(cpu);
+ u32 reg;
+
+ /* Clear any previous DFS DONE event */
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ reg &= ~PMSU_EVENT_STATUS_AND_MASK_DFS_DONE;
+ writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+ /* Mask the DFS done interrupt, since we are going to poll */
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ reg |= PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK;
+ writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+ /* Trigger the DFS on the appropriate CPU */
+ smp_call_function_single(cpu, mvebu_pmsu_dfs_request_local,
+ NULL, false);
+
+ /* Poll until the DFS done event is generated */
+ timeout = jiffies + HZ;
+ while (time_before(jiffies, timeout)) {
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ if (reg & PMSU_EVENT_STATUS_AND_MASK_DFS_DONE)
+ break;
+ udelay(10);
+ }
+
+ if (time_after(jiffies, timeout))
+ return -ETIME;
+
+ /* Restore the DFS mask to its original state */
+ reg = readl(pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+ reg &= ~PMSU_EVENT_STATUS_AND_MASK_DFS_DONE_MASK;
+ writel(reg, pmsu_mp_base + PMSU_EVENT_STATUS_AND_MASK(hwcpu));
+
+ return 0;
+}
+
+static int __init armada_xp_pmsu_cpufreq_init(void)
+{
+ struct device_node *np;
+ struct resource res;
+ int ret, cpu;
+
+ if (!of_machine_is_compatible("marvell,armadaxp"))
+ return 0;
+
+ /*
+ * In order to have proper cpufreq handling, we need to ensure
+ * that the Device Tree description of the CPU clock includes
+ * the definition of the PMU DFS registers. If not, we do not
+ * register the clock notifier and the cpufreq driver. This
+ * piece of code is only for compatibility with old Device
+ * Trees.
+ */
+ np = of_find_compatible_node(NULL, NULL, "marvell,armada-xp-cpu-clock");
+ if (!np)
+ return 0;
+
+ ret = of_address_to_resource(np, 1, &res);
+ if (ret) {
+ pr_warn(FW_WARN "not enabling cpufreq, deprecated armada-xp-cpu-clock binding\n");
+ of_node_put(np);
+ return 0;
+ }
+
+ of_node_put(np);
+
+ /*
+ * For each CPU, this loop registers the operating points
+ * supported (which are the nominal CPU frequency and half of
+ * it), and registers the clock notifier that will take care
+ * of doing the PMSU part of a frequency transition.
+ */
+ for_each_possible_cpu(cpu) {
+ struct device *cpu_dev;
+ struct clk *clk;
+ int ret;
+
+ cpu_dev = get_cpu_device(cpu);
+ if (!cpu_dev) {
+ pr_err("Cannot get CPU %d\n", cpu);
+ continue;
+ }
+
+ clk = clk_get(cpu_dev, 0);
+ if (IS_ERR(clk)) {
+ pr_err("Cannot get clock for CPU %d\n", cpu);
+ return PTR_ERR(clk);
+ }
+
+ /*
+ * In case of a failure of dev_pm_opp_add(), we don't
+ * bother with cleaning up the registered OPP (there's
+ * no function to do so), and simply cancel the
+ * registration of the cpufreq device.
+ */
+ ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk), 0);
+ if (ret) {
+ clk_put(clk);
+ return ret;
+ }
+
+ ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk) / 2, 0);
+ if (ret) {
+ clk_put(clk);
+ return ret;
+ }
+ }
+ platform_device_register_simple("cpufreq-generic", -1, NULL, 0);
return 0;
}
-arch_initcall(armada_370_xp_cpu_pm_init);
-early_initcall(armada_370_xp_pmsu_init);
+device_initcall(armada_xp_pmsu_cpufreq_init);
diff --git a/arch/arm/mach-mvebu/pmsu.h b/arch/arm/mach-mvebu/pmsu.h
index 07a737c6b95d..6b58c1fe2b0d 100644
--- a/arch/arm/mach-mvebu/pmsu.h
+++ b/arch/arm/mach-mvebu/pmsu.h
@@ -12,5 +12,10 @@
#define __MACH_MVEBU_PMSU_H
int armada_xp_boot_cpu(unsigned int cpu_id, void *phys_addr);
+int mvebu_setup_boot_addr_wa(unsigned int crypto_eng_target,
+ unsigned int crypto_eng_attribute,
+ phys_addr_t resume_addr_reg);
+
+void mvebu_v7_pmsu_idle_exit(void);
#endif /* __MACH_370_XP_PMSU_H */
diff --git a/arch/arm/mach-mvebu/pmsu_ll.S b/arch/arm/mach-mvebu/pmsu_ll.S
index fc3de68d8c54..a945756cfb45 100644
--- a/arch/arm/mach-mvebu/pmsu_ll.S
+++ b/arch/arm/mach-mvebu/pmsu_ll.S
@@ -23,3 +23,39 @@ ARM_BE8(setend be ) @ go BE8 if entered LE
b cpu_resume
ENDPROC(armada_370_xp_cpu_resume)
+ENTRY(armada_38x_cpu_resume)
+ /* do we need it for Armada 38x*/
+ARM_BE8(setend be ) @ go BE8 if entered LE
+ bl v7_invalidate_l1
+ mrc p15, 4, r1, c15, c0 @ get SCU base address
+ orr r1, r1, #0x8 @ SCU CPU Power Status Register
+ mrc 15, 0, r0, cr0, cr0, 5 @ get the CPU ID
+ and r0, r0, #15
+ add r1, r1, r0
+ mov r0, #0x0
+ strb r0, [r1] @ switch SCU power state to Normal mode
+ b cpu_resume
+ENDPROC(armada_38x_cpu_resume)
+
+.global mvebu_boot_wa_start
+.global mvebu_boot_wa_end
+
+/* The following code will be executed from SRAM */
+ENTRY(mvebu_boot_wa_start)
+mvebu_boot_wa_start:
+ARM_BE8(setend be)
+ adr r0, 1f
+ ldr r0, [r0] @ load the address of the
+ @ resume register
+ ldr r0, [r0] @ load the value in the
+ @ resume register
+ARM_BE8(rev r0, r0) @ the value is stored LE
+ mov pc, r0 @ jump to this value
+/*
+ * the last word of this piece of code will be filled by the physical
+ * address of the boot address register just after being copied in SRAM
+ */
+1:
+ .long .
+mvebu_boot_wa_end:
+ENDPROC(mvebu_boot_wa_end)
diff --git a/arch/arm/mach-mvebu/system-controller.c b/arch/arm/mach-mvebu/system-controller.c
index 0c5524ac75b7..a068cb5c2ce8 100644
--- a/arch/arm/mach-mvebu/system-controller.c
+++ b/arch/arm/mach-mvebu/system-controller.c
@@ -28,8 +28,14 @@
#include <linux/io.h>
#include <linux/reboot.h>
#include "common.h"
+#include "mvebu-soc-id.h"
+#include "pmsu.h"
+
+#define ARMADA_375_CRYPT0_ENG_TARGET 41
+#define ARMADA_375_CRYPT0_ENG_ATTR 1
static void __iomem *system_controller_base;
+static phys_addr_t system_controller_phys_base;
struct mvebu_system_controller {
u32 rstoutn_mask_offset;
@@ -39,6 +45,9 @@ struct mvebu_system_controller {
u32 system_soft_reset;
u32 resume_boot_addr;
+
+ u32 dev_id;
+ u32 rev_id;
};
static struct mvebu_system_controller *mvebu_sc;
@@ -47,6 +56,8 @@ static const struct mvebu_system_controller armada_370_xp_system_controller = {
.system_soft_reset_offset = 0x64,
.rstoutn_mask_reset_out_en = 0x1,
.system_soft_reset = 0x1,
+ .dev_id = 0x38,
+ .rev_id = 0x3c,
};
static const struct mvebu_system_controller armada_375_system_controller = {
@@ -55,6 +66,8 @@ static const struct mvebu_system_controller armada_375_system_controller = {
.rstoutn_mask_reset_out_en = 0x1,
.system_soft_reset = 0x1,
.resume_boot_addr = 0xd4,
+ .dev_id = 0x38,
+ .rev_id = 0x3c,
};
static const struct mvebu_system_controller orion_system_controller = {
@@ -101,11 +114,45 @@ void mvebu_restart(enum reboot_mode mode, const char *cmd)
;
}
+int mvebu_system_controller_get_soc_id(u32 *dev, u32 *rev)
+{
+ if (of_machine_is_compatible("marvell,armada380") &&
+ system_controller_base) {
+ *dev = readl(system_controller_base + mvebu_sc->dev_id) >> 16;
+ *rev = (readl(system_controller_base + mvebu_sc->rev_id) >> 8)
+ & 0xF;
+ return 0;
+ } else
+ return -ENODEV;
+}
+
#ifdef CONFIG_SMP
+void mvebu_armada375_smp_wa_init(void)
+{
+ u32 dev, rev;
+ phys_addr_t resume_addr_reg;
+
+ if (mvebu_get_soc_id(&dev, &rev) != 0)
+ return;
+
+ if (rev != ARMADA_375_Z1_REV)
+ return;
+
+ resume_addr_reg = system_controller_phys_base +
+ mvebu_sc->resume_boot_addr;
+ mvebu_setup_boot_addr_wa(ARMADA_375_CRYPT0_ENG_TARGET,
+ ARMADA_375_CRYPT0_ENG_ATTR,
+ resume_addr_reg);
+}
+
void mvebu_system_controller_set_cpu_boot_addr(void *boot_addr)
{
BUG_ON(system_controller_base == NULL);
BUG_ON(mvebu_sc->resume_boot_addr == 0);
+
+ if (of_machine_is_compatible("marvell,armada375"))
+ mvebu_armada375_smp_wa_init();
+
writel(virt_to_phys(boot_addr), system_controller_base +
mvebu_sc->resume_boot_addr);
}
@@ -119,7 +166,10 @@ static int __init mvebu_system_controller_init(void)
np = of_find_matching_node_and_match(NULL, of_system_controller_table,
&match);
if (np) {
+ struct resource res;
system_controller_base = of_iomap(np, 0);
+ of_address_to_resource(np, 0, &res);
+ system_controller_phys_base = res.start;
mvebu_sc = (struct mvebu_system_controller *)match->data;
of_node_put(np);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 16:48:27 +0000