ARMv8 Trusted Firmware release v0.2v0.2

7 files changed, 538 insertions, 0 deletions

diff --git a/drivers/arm/interconnect/cci-400/cci400.c b/drivers/arm/interconnect/cci-400/cci400.c
new file mode 100644
index 0000000..60586ab
--- /dev/null
+++ b/drivers/arm/interconnect/cci-400/cci400.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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 <assert.h>
+#include <platform.h>
+#include <cci400.h>
+
+static inline unsigned long get_slave_iface_base(unsigned long mpidr)
+{
+	return CCI400_BASE + SLAVE_IFACE_OFFSET(CCI400_SL_IFACE_INDEX(mpidr));
+}
+
+void cci_enable_coherency(unsigned long mpidr)
+{
+	/* Enable Snoops and DVM messages */
+	mmio_write_32(get_slave_iface_base(mpidr) + SNOOP_CTRL_REG,
+		      DVM_EN_BIT | SNOOP_EN_BIT);
+
+	/* Wait for the dust to settle down */
+	while (mmio_read_32(CCI400_BASE + STATUS_REG) & CHANGE_PENDING_BIT);
+}
+
+void cci_disable_coherency(unsigned long mpidr)
+{
+	/* Disable Snoops and DVM messages */
+	mmio_write_32(get_slave_iface_base(mpidr) + SNOOP_CTRL_REG,
+		      ~(DVM_EN_BIT | SNOOP_EN_BIT));
+
+	/* Wait for the dust to settle down */
+	while (mmio_read_32(CCI400_BASE + STATUS_REG) & CHANGE_PENDING_BIT);
+}
+
diff --git a/drivers/arm/interconnect/cci-400/cci400.h b/drivers/arm/interconnect/cci-400/cci400.h
new file mode 100644
index 0000000..62e2fbb
--- /dev/null
+++ b/drivers/arm/interconnect/cci-400/cci400.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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 __CCI_400_H__
+#define __CCI_400_H__
+
+/* Slave interface offsets from PERIPHBASE */
+#define SLAVE_IFACE4_OFFSET		0x5000
+#define SLAVE_IFACE3_OFFSET		0x4000
+#define SLAVE_IFACE2_OFFSET		0x3000
+#define SLAVE_IFACE1_OFFSET		0x2000
+#define SLAVE_IFACE0_OFFSET		0x1000
+#define SLAVE_IFACE_OFFSET(index)	SLAVE_IFACE0_OFFSET + (0x1000 * index)
+
+/* Control and ID register offsets */
+#define CTRL_OVERRIDE_REG		0x0
+#define SPEC_CTRL_REG			0x4
+#define SECURE_ACCESS_REG		0x8
+#define STATUS_REG			0xc
+#define IMPRECISE_ERR_REG		0x10
+#define PERFMON_CTRL_REG		0x100
+
+/* Slave interface register offsets */
+#define SNOOP_CTRL_REG			0x0
+#define SH_OVERRIDE_REG			0x4
+#define READ_CHNL_QOS_VAL_OVERRIDE_REG	0x100
+#define WRITE_CHNL_QOS_VAL_OVERRIDE_REG	0x104
+#define QOS_CTRL_REG			0x10c
+#define MAX_OT_REG			0x110
+#define TARGET_LATENCY_REG		0x130
+#define LATENCY_REGULATION_REG		0x134
+#define QOS_RANGE_REG			0x138
+
+/* Snoop Control register bit definitions */
+#define DVM_EN_BIT			(1 << 1)
+#define SNOOP_EN_BIT			(1 << 0)
+
+/* Status register bit definitions */
+#define CHANGE_PENDING_BIT		(1 << 0)
+
+/* Function declarations */
+extern void cci_enable_coherency(unsigned long mpidr);
+extern void cci_disable_coherency(unsigned long mpidr);
+
+#endif /* __CCI_400_H__ */
diff --git a/drivers/arm/peripherals/pl011/console.h b/drivers/arm/peripherals/pl011/console.h
new file mode 100644
index 0000000..b98db61
--- /dev/null
+++ b/drivers/arm/peripherals/pl011/console.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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 __CONSOLE_H__
+#define __CONSOLE_H__
+
+void console_init(void);
+int console_putc(int c);
+int console_getc(void);
+
+#endif /* __CONSOLE_H__ */
+
diff --git a/drivers/arm/peripherals/pl011/pl011.c b/drivers/arm/peripherals/pl011/pl011.c
new file mode 100644
index 0000000..2f6f5ea
--- /dev/null
+++ b/drivers/arm/peripherals/pl011/pl011.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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 <console.h>
+#include <platform.h>
+#include <pl011.h>
+
+/*
+ * TODO: Console init functions shoule be in a console.c. This file should
+ * only contain the pl011 accessors.
+ */
+void console_init(void)
+{
+	unsigned int divisor;
+
+	/* Baud Rate */
+
+#if defined(PL011_INTEGER) && defined(PL011_FRACTIONAL)
+	mmio_write_32(PL011_BASE + UARTIBRD, PL011_INTEGER);
+	mmio_write_32(PL011_BASE + UARTFBRD, PL011_FRACTIONAL);
+#else
+	divisor = (PL011_CLK_IN_HZ * 4) / PL011_BAUDRATE;
+	mmio_write_32(PL011_BASE + UARTIBRD, divisor >> 6);
+	mmio_write_32(PL011_BASE + UARTFBRD, divisor & 0x3F);
+#endif
+
+
+	mmio_write_32(PL011_BASE + UARTLCR_H, PL011_LINE_CONTROL);
+
+	/* Clear any pending errors */
+	mmio_write_32(PL011_BASE + UARTECR, 0);
+
+	/* Enable tx, rx, and uart overall */
+	mmio_write_32(PL011_BASE + UARTCR,
+		      PL011_UARTCR_RXE | PL011_UARTCR_TXE |
+		      PL011_UARTCR_UARTEN);
+}
+
+int console_putc(int c)
+{
+	if (c == '\n') {
+		console_putc('\r');
+	}
+	while ((mmio_read_32(PL011_BASE + UARTFR) & PL011_UARTFR_TXFE)
+	       == 0) ;
+	mmio_write_32(PL011_BASE + UARTDR, c);
+	return c;
+}
+
+int console_getc(void)
+{
+	while ((mmio_read_32(PL011_BASE + UARTFR) & PL011_UARTFR_RXFE)
+	       != 0) ;
+	return mmio_read_32(PL011_BASE + UARTDR);
+}
diff --git a/drivers/arm/peripherals/pl011/pl011.h b/drivers/arm/peripherals/pl011/pl011.h
new file mode 100644
index 0000000..53b4dab
--- /dev/null
+++ b/drivers/arm/peripherals/pl011/pl011.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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 __PL011_H__
+#define __PL011_H__
+
+/* PL011 Registers */
+#define UARTDR                    0x000
+#define UARTRSR                   0x004
+#define UARTECR                   0x004
+#define UARTFR                    0x018
+#define UARTILPR                  0x020
+#define UARTIBRD                  0x024
+#define UARTFBRD                  0x028
+#define UARTLCR_H                 0x02C
+#define UARTCR                    0x030
+#define UARTIFLS                  0x034
+#define UARTIMSC                  0x038
+#define UARTRIS                   0x03C
+#define UARTMIS                   0x040
+#define UARTICR                   0x044
+#define UARTDMACR                 0x048
+
+/* Data status bits */
+#define UART_DATA_ERROR_MASK      0x0F00
+
+/* Status reg bits */
+#define UART_STATUS_ERROR_MASK    0x0F
+
+/* Flag reg bits */
+#define PL011_UARTFR_RI           (1 << 8)	/* Ring indicator */
+#define PL011_UARTFR_TXFE         (1 << 7)	/* Transmit FIFO empty */
+#define PL011_UARTFR_RXFF         (1 << 6)	/* Receive  FIFO full */
+#define PL011_UARTFR_TXFF         (1 << 5)	/* Transmit FIFO full */
+#define PL011_UARTFR_RXFE         (1 << 4)	/* Receive  FIFO empty */
+#define PL011_UARTFR_BUSY         (1 << 3)	/* UART busy */
+#define PL011_UARTFR_DCD          (1 << 2)	/* Data carrier detect */
+#define PL011_UARTFR_DSR          (1 << 1)	/* Data set ready */
+#define PL011_UARTFR_CTS          (1 << 0)	/* Clear to send */
+
+/* Control reg bits */
+#define PL011_UARTCR_CTSEN        (1 << 15)	/* CTS hardware flow control enable */
+#define PL011_UARTCR_RTSEN        (1 << 14)	/* RTS hardware flow control enable */
+#define PL011_UARTCR_RTS          (1 << 11)	/* Request to send */
+#define PL011_UARTCR_DTR          (1 << 10)	/* Data transmit ready. */
+#define PL011_UARTCR_RXE          (1 << 9)	/* Receive enable */
+#define PL011_UARTCR_TXE          (1 << 8)	/* Transmit enable */
+#define PL011_UARTCR_LBE          (1 << 7)	/* Loopback enable */
+#define PL011_UARTCR_UARTEN       (1 << 0)	/* UART Enable */
+
+#if !defined(PL011_BASE)
+#error "The PL011_BASE macro must be defined."
+#endif
+
+#if !defined(PL011_BAUDRATE)
+#define PL011_BAUDRATE  115200
+#endif
+
+#if !defined(PL011_CLK_IN_HZ)
+#define PL011_CLK_IN_HZ 24000000
+#endif
+
+#if !defined(PL011_LINE_CONTROL)
+/* FIFO Enabled / No Parity / 8 Data bit / One Stop Bit */
+#define PL011_LINE_CONTROL  (PL011_UARTLCR_H_FEN | PL011_UARTLCR_H_WLEN_8)
+#endif
+
+/* Line Control Register Bits */
+#define PL011_UARTLCR_H_SPS       (1 << 7)	/* Stick parity select */
+#define PL011_UARTLCR_H_WLEN_8    (3 << 5)
+#define PL011_UARTLCR_H_WLEN_7    (2 << 5)
+#define PL011_UARTLCR_H_WLEN_6    (1 << 5)
+#define PL011_UARTLCR_H_WLEN_5    (0 << 5)
+#define PL011_UARTLCR_H_FEN       (1 << 4)	/* FIFOs Enable */
+#define PL011_UARTLCR_H_STP2      (1 << 3)	/* Two stop bits select */
+#define PL011_UARTLCR_H_EPS       (1 << 2)	/* Even parity select */
+#define PL011_UARTLCR_H_PEN       (1 << 1)	/* Parity Enable */
+#define PL011_UARTLCR_H_BRK       (1 << 0)	/* Send break */
+
+#endif	/* __PL011_H__ */
diff --git a/drivers/power/fvp_pwrc.c b/drivers/power/fvp_pwrc.c
new file mode 100644
index 0000000..c7db33b
--- /dev/null
+++ b/drivers/power/fvp_pwrc.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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 <fvp_pwrc.h>
+#include <bakery_lock.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_write_pwkupr(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_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/drivers/power/fvp_pwrc.h b/drivers/power/fvp_pwrc.h
new file mode 100644
index 0000000..a2efcc5
--- /dev/null
+++ b/drivers/power/fvp_pwrc.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2013, ARM Limited. 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_write_pwkupr(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__ */