Move FVP power driver to FVP platform

Move the FVP power driver to a directory under the FVP platform
port as this is not a generically usable driver.

Change-Id: Ibc78bd88752eb3e3964336741488349ac345f4f0

7 files changed, 194 insertions, 6 deletions

diff --git a/plat/fvp/aarch64/bl1_plat_helpers.S b/plat/fvp/aarch64/bl1_plat_helpers.S
index 15e3a21c..69fb14bb 100644
--- a/plat/fvp/aarch64/bl1_plat_helpers.S
+++ b/plat/fvp/aarch64/bl1_plat_helpers.S
@@ -30,9 +30,9 @@
 
 #include <arch.h>
 #include <platform.h>
-#include <fvp_pwrc.h>
 #include <gic.h>
 #include <asm_macros.S>
+#include "../drivers/pwrc/fvp_pwrc.h"
 
 	.globl	platform_get_entrypoint
 	.globl	platform_cold_boot_init
diff --git a/plat/fvp/bl31_plat_setup.c b/plat/fvp/bl31_plat_setup.c
index 9bf83eba..bd167df0 100644
--- a/plat/fvp/bl31_plat_setup.c
+++ b/plat/fvp/bl31_plat_setup.c
@@ -30,8 +30,8 @@
 
 #include <platform.h>
 #include <arch.h>
-#include <fvp_pwrc.h>
 #include <console.h>
+#include "drivers/pwrc/fvp_pwrc.h"
 
 /*******************************************************************************
  * Declarations of linker defined symbols which will help us find the layout
diff --git a/plat/fvp/drivers/pwrc/fvp_pwrc.c b/plat/fvp/drivers/pwrc/fvp_pwrc.c
new file mode 100644
index 00000000..164a7343
--- /dev/null
+++ b/plat/fvp/drivers/pwrc/fvp_pwrc.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+#include <arch_helpers.h>
+#include <platform.h>
+#include <bakery_lock.h>
+#include "fvp_pwrc.h"
+
+/*
+ * TODO: Someday there will be a generic power controller api. At the moment
+ * each platform has its own pwrc so just exporting functions is fine.
+ */
+static bakery_lock pwrc_lock __attribute__ ((section("tzfw_coherent_mem")));
+
+unsigned int fvp_pwrc_get_cpu_wkr(unsigned long mpidr)
+{
+	unsigned int rc = 0;
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PSYSR_OFF, (unsigned int) mpidr);
+	rc = PSYSR_WK(mmio_read_32(PWRC_BASE + PSYSR_OFF));
+	bakery_lock_release(mpidr, &pwrc_lock);
+	return rc;
+}
+
+unsigned int fvp_pwrc_read_psysr(unsigned long mpidr)
+{
+	unsigned int rc = 0;
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PSYSR_OFF, (unsigned int) mpidr);
+	rc = mmio_read_32(PWRC_BASE + PSYSR_OFF);
+	bakery_lock_release(mpidr, &pwrc_lock);
+	return rc;
+}
+
+void fvp_pwrc_write_pponr(unsigned long mpidr)
+{
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PPONR_OFF, (unsigned int) mpidr);
+	bakery_lock_release(mpidr, &pwrc_lock);
+}
+
+void fvp_pwrc_write_ppoffr(unsigned long mpidr)
+{
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PPOFFR_OFF, (unsigned int) mpidr);
+	bakery_lock_release(mpidr, &pwrc_lock);
+}
+
+void fvp_pwrc_set_wen(unsigned long mpidr)
+{
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PWKUPR_OFF,
+		      (unsigned int) (PWKUPR_WEN | mpidr));
+	bakery_lock_release(mpidr, &pwrc_lock);
+}
+
+void fvp_pwrc_clr_wen(unsigned long mpidr)
+{
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PWKUPR_OFF,
+		      (unsigned int) mpidr);
+	bakery_lock_release(mpidr, &pwrc_lock);
+}
+
+void fvp_pwrc_write_pcoffr(unsigned long mpidr)
+{
+	bakery_lock_get(mpidr, &pwrc_lock);
+	mmio_write_32(PWRC_BASE + PCOFFR_OFF, (unsigned int) mpidr);
+	bakery_lock_release(mpidr, &pwrc_lock);
+}
+
+/* Nothing else to do here apart from initializing the lock */
+int fvp_pwrc_setup(void)
+{
+	bakery_lock_init(&pwrc_lock);
+	return 0;
+}
+
+
+
diff --git a/plat/fvp/drivers/pwrc/fvp_pwrc.h b/plat/fvp/drivers/pwrc/fvp_pwrc.h
new file mode 100644
index 00000000..f600a241
--- /dev/null
+++ b/plat/fvp/drivers/pwrc/fvp_pwrc.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __FVP_PWRC_H__
+#define __FVP_PWRC_H__
+
+/* FVP Power controller register offset etc */
+#define PPOFFR_OFF		0x0
+#define PPONR_OFF		0x4
+#define PCOFFR_OFF		0x8
+#define PWKUPR_OFF		0xc
+#define PSYSR_OFF		0x10
+
+#define PWKUPR_WEN		(1ull << 31)
+
+#define PSYSR_AFF_L2		(1 << 31)
+#define PSYSR_AFF_L1		(1 << 30)
+#define PSYSR_AFF_L0		(1 << 29)
+#define PSYSR_WEN		(1 << 28)
+#define PSYSR_PC		(1 << 27)
+#define PSYSR_PP		(1 << 26)
+
+#define PSYSR_WK_SHIFT		24
+#define PSYSR_WK_MASK		0x3
+#define PSYSR_WK(x)		(x >> PSYSR_WK_SHIFT) & PSYSR_WK_MASK
+
+#define WKUP_COLD		0x0
+#define WKUP_RESET		0x1
+#define WKUP_PPONR		0x2
+#define WKUP_GICREQ		0x3
+
+#define PSYSR_INVALID		0xffffffff
+
+#ifndef __ASSEMBLY__
+
+/*******************************************************************************
+ * Function & variable prototypes
+ ******************************************************************************/
+extern int fvp_pwrc_setup(void);
+extern void fvp_pwrc_write_pcoffr(unsigned long);
+extern void fvp_pwrc_write_ppoffr(unsigned long);
+extern void fvp_pwrc_write_pponr(unsigned long);
+extern void fvp_pwrc_set_wen(unsigned long);
+extern void fvp_pwrc_clr_wen(unsigned long);
+extern unsigned int fvp_pwrc_read_psysr(unsigned long);
+extern unsigned int fvp_pwrc_get_cpu_wkr(unsigned long);
+
+#endif /*__ASSEMBLY__*/
+
+#endif /* __FVP_PWRC_H__ */
diff --git a/plat/fvp/plat_pm.c b/plat/fvp/plat_pm.c
index 7b51476e..2a414c98 100644
--- a/plat/fvp/plat_pm.c
+++ b/plat/fvp/plat_pm.c
@@ -39,9 +39,9 @@
 #include <bakery_lock.h>
 #include <cci400.h>
 #include <gic.h>
-#include <fvp_pwrc.h>
 /* Only included for error codes */
 #include <psci.h>
+#include "drivers/pwrc/fvp_pwrc.h"
 
 /*******************************************************************************
  * FVP handler called when an affinity instance is about to enter standby.
diff --git a/plat/fvp/plat_topology.c b/plat/fvp/plat_topology.c
index 0c8c5259..765077e3 100644
--- a/plat/fvp/plat_topology.c
+++ b/plat/fvp/plat_topology.c
@@ -31,9 +31,9 @@
 #include <string.h>
 #include <assert.h>
 #include <platform.h>
-#include <fvp_pwrc.h>
 /* TODO: Reusing psci error codes & state information. Get our own! */
 #include <psci.h>
+#include "drivers/pwrc/fvp_pwrc.h"
 
 /* We treat '255' as an invalid affinity instance */
 #define AFFINST_INVAL	0xff
diff --git a/plat/fvp/platform.mk b/plat/fvp/platform.mk
index 2b904ee0..f55000dc 100644
--- a/plat/fvp/platform.mk
+++ b/plat/fvp/platform.mk
@@ -57,8 +57,8 @@ PLAT_BL31_C_VPATH	:=	drivers/arm/cci-400			\
 				lib/${ARCH}				\
 				lib/semihosting				\
 				lib/stdlib				\
-				drivers/power				\
-				drivers/io
+				drivers/io				\
+				plat/fvp/drivers/pwrc
 
 PLAT_BL31_S_VPATH	:=	lib/semihosting/${ARCH}