convert common files to new SoC access

* add's a warning to all files, which need update to new SoC access
 * convert common files in cpu/../at91 and a lot of drivers to use
   c stucture SoC access

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>

12 files changed, 208 insertions, 121 deletions

diff --git a/cpu/arm926ejs/at91/at91cap9_devices.c b/cpu/arm926ejs/at91/at91cap9_devices.c
index 518a8d7002c..2d878fdde6d 100644
--- a/cpu/arm926ejs/at91/at91cap9_devices.c
+++ b/cpu/arm926ejs/at91/at91cap9_devices.c
@@ -34,30 +34,38 @@
 
 void at91_serial0_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 22, 1);		/* TXD0 */
 	at91_set_a_periph(AT91_PIO_PORTA, 23, 0);		/* RXD0 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_US0);
+	writel(1 << AT91CAP9_ID_US0, &pmc->pcer);
 }
 
 void at91_serial1_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTD, 0, 1);		/* TXD1 */
 	at91_set_a_periph(AT91_PIO_PORTD, 1, 0);		/* RXD1 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_US1);
+	writel(1 << AT91CAP9_ID_US1, &pmc->pcer);
 }
 
 void at91_serial2_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTD, 2, 1);		/* TXD2 */
 	at91_set_a_periph(AT91_PIO_PORTD, 3, 0);		/* RXD2 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_US2);
+	writel(1 << AT91CAP9_ID_US2, &pmc->pcer);
 }
 
 void at91_serial3_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTC, 30, 0);		/* DRXD */
 	at91_set_a_periph(AT91_PIO_PORTC, 31, 1);		/* DTXD */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 }
 
 void at91_serial_hw_init(void)
@@ -82,12 +90,14 @@ void at91_serial_hw_init(void)
 #ifdef CONFIG_HAS_DATAFLASH
 void at91_spi0_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_b_periph(AT91_PIO_PORTA, 0, 0);	/* SPI0_MISO */
 	at91_set_b_periph(AT91_PIO_PORTA, 1, 0);	/* SPI0_MOSI */
 	at91_set_b_periph(AT91_PIO_PORTA, 2, 0);	/* SPI0_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_SPI0);
+	writel(1 << AT91CAP9_ID_SPI0, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_b_periph(AT91_PIO_PORTA, 5, 1);
@@ -117,12 +127,14 @@ void at91_spi0_hw_init(unsigned long cs_mask)
 
 void at91_spi1_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 12, 0);	/* SPI1_MISO */
 	at91_set_a_periph(AT91_PIO_PORTB, 13, 0);	/* SPI1_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTB, 14, 0);	/* SPI1_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_SPI1);
+	writel(1 << AT91CAP9_ID_SPI1, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTB, 15, 1);
@@ -182,10 +194,12 @@ void at91_macb_hw_init(void)
 #ifdef CONFIG_AT91_CAN
 void at91_can_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 12, 0);	/* CAN_TX */
 	at91_set_a_periph(AT91_PIO_PORTA, 13, 1);	/* CAN_RX */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_CAN);
+	writel(1 << AT91CAP9_ID_CAN, &pmc->pcer);
 }
 #endif
diff --git a/cpu/arm926ejs/at91/at91sam9260_devices.c b/cpu/arm926ejs/at91/at91sam9260_devices.c
index 68c1974d513..77d49ab1c76 100644
--- a/cpu/arm926ejs/at91/at91sam9260_devices.c
+++ b/cpu/arm926ejs/at91/at91sam9260_devices.c
@@ -30,30 +30,38 @@
 
 void at91_serial0_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 4, 1);		/* TXD0 */
 	at91_set_a_periph(AT91_PIO_PORTB, 5, 0);		/* RXD0 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_US0);
+	writel(1 << AT91SAM9260_ID_US0, &pmc->pcer);
 }
 
 void at91_serial1_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 6, 1);		/* TXD1 */
 	at91_set_a_periph(AT91_PIO_PORTB, 7, 0);		/* RXD1 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_US1);
+	writel(1 << AT91SAM9260_ID_US1, &pmc->pcer);
 }
 
 void at91_serial2_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 8, 1);		/* TXD2 */
 	at91_set_a_periph(AT91_PIO_PORTB, 9, 0);		/* RXD2 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_US2);
+	writel(1 << AT91SAM9260_ID_US2, &pmc->pcer);
 }
 
 void at91_serial3_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 14, 0);		/* DRXD */
 	at91_set_a_periph(AT91_PIO_PORTB, 15, 1);		/* DTXD */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 }
 
 void at91_serial_hw_init(void)
@@ -78,12 +86,14 @@ void at91_serial_hw_init(void)
 #if defined(CONFIG_HAS_DATAFLASH) || defined(CONFIG_ATMEL_SPI)
 void at91_spi0_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 0, 0);	/* SPI0_MISO */
 	at91_set_a_periph(AT91_PIO_PORTA, 1, 0);	/* SPI0_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTA, 2, 0);	/* SPI0_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_SPI0);
+	writel(1 << AT91SAM9260_ID_SPI0, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTA, 3, 1);
@@ -113,12 +123,14 @@ void at91_spi0_hw_init(unsigned long cs_mask)
 
 void at91_spi1_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 0, 0);	/* SPI1_MISO */
 	at91_set_a_periph(AT91_PIO_PORTB, 1, 0);	/* SPI1_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTB, 2, 0);	/* SPI1_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_SPI1);
+	writel(1 << AT91SAM9260_ID_SPI1, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTB, 3, 1);
diff --git a/cpu/arm926ejs/at91/at91sam9261_devices.c b/cpu/arm926ejs/at91/at91sam9261_devices.c
index 286e72a8230..b4353ef5cb5 100644
--- a/cpu/arm926ejs/at91/at91sam9261_devices.c
+++ b/cpu/arm926ejs/at91/at91sam9261_devices.c
@@ -30,30 +30,38 @@
 
 void at91_serial0_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTC, 8, 1);		/* TXD0 */
 	at91_set_a_periph(AT91_PIO_PORTC, 9, 0);		/* RXD0 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_US0);
+	writel(1 << AT91SAM9261_ID_US0, &pmc->pcer);
 }
 
 void at91_serial1_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTC, 12, 1);		/* TXD1 */
 	at91_set_a_periph(AT91_PIO_PORTC, 13, 0);		/* RXD1 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_US1);
+	writel(1 << AT91SAM9261_ID_US1, &pmc->pcer);
 }
 
 void at91_serial2_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTC, 14, 1);		/* TXD2 */
 	at91_set_a_periph(AT91_PIO_PORTC, 15, 0);		/* RXD2 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_US2);
+	writel(1 << AT91SAM9261_ID_US2, &pmc->pcer);
 }
 
 void at91_serial3_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 9, 0);		/* DRXD */
 	at91_set_a_periph(AT91_PIO_PORTA, 10, 1);		/* DTXD */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 }
 
 void at91_serial_hw_init(void)
@@ -78,12 +86,14 @@ void at91_serial_hw_init(void)
 #ifdef CONFIG_HAS_DATAFLASH
 void at91_spi0_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 0, 0);	/* SPI0_MISO */
 	at91_set_a_periph(AT91_PIO_PORTA, 1, 0);	/* SPI0_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTA, 2, 0);	/* SPI0_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_SPI0);
+	writel(1 << AT91SAM9261_ID_SPI0, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTA, 3, 1);
@@ -113,12 +123,14 @@ void at91_spi0_hw_init(unsigned long cs_mask)
 
 void at91_spi1_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 30, 0);	/* SPI1_MISO */
 	at91_set_a_periph(AT91_PIO_PORTB, 31, 0);	/* SPI1_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTB, 29, 0);	/* SPI1_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_SPI1);
+	writel(1 << AT91SAM9261_ID_SPI1, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTB, 28, 1);
diff --git a/cpu/arm926ejs/at91/at91sam9263_devices.c b/cpu/arm926ejs/at91/at91sam9263_devices.c
index 90bdcc2f5f9..deda3e54d92 100644
--- a/cpu/arm926ejs/at91/at91sam9263_devices.c
+++ b/cpu/arm926ejs/at91/at91sam9263_devices.c
@@ -27,37 +27,46 @@
  */
 
 #include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/io.h>
 #include <asm/arch/at91_common.h>
 #include <asm/arch/at91_pmc.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/io.h>
+#include <asm/arch/at91_pio.h>
 
 void at91_serial0_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 26, 1);		/* TXD0 */
 	at91_set_a_periph(AT91_PIO_PORTA, 27, 0);		/* RXD0 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_US0);
+	writel(1 << AT91SAM9263_ID_US0, &pmc->pcer);
 }
 
 void at91_serial1_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTD, 0, 1);		/* TXD1 */
 	at91_set_a_periph(AT91_PIO_PORTD, 1, 0);		/* RXD1 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_US1);
+	writel(1 << AT91SAM9263_ID_US1, &pmc->pcer);
 }
 
 void at91_serial2_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTD, 2, 1);		/* TXD2 */
 	at91_set_a_periph(AT91_PIO_PORTD, 3, 0);		/* RXD2 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_US2);
+	writel(1 << AT91SAM9263_ID_US2, &pmc->pcer);
 }
 
 void at91_serial3_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTC, 30, 0);		/* DRXD */
 	at91_set_a_periph(AT91_PIO_PORTC, 31, 1);		/* DTXD */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 }
 
 void at91_serial_hw_init(void)
@@ -82,12 +91,14 @@ void at91_serial_hw_init(void)
 #ifdef CONFIG_HAS_DATAFLASH
 void at91_spi0_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_b_periph(AT91_PIO_PORTA, 0, 0);	/* SPI0_MISO */
 	at91_set_b_periph(AT91_PIO_PORTA, 1, 0);	/* SPI0_MOSI */
 	at91_set_b_periph(AT91_PIO_PORTA, 2, 0);	/* SPI0_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_SPI0);
+	writel(1 << AT91SAM9263_ID_SPI0, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_b_periph(AT91_PIO_PORTA, 5, 1);
@@ -117,12 +128,14 @@ void at91_spi0_hw_init(unsigned long cs_mask)
 
 void at91_spi1_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 12, 0);	/* SPI1_MISO */
 	at91_set_a_periph(AT91_PIO_PORTB, 13, 0);	/* SPI1_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTB, 14, 0);	/* SPI1_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_SPI1);
+	writel(1 << AT91SAM9263_ID_SPI1, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTB, 15, 1);
@@ -190,10 +203,12 @@ void at91_uhp_hw_init(void)
 #ifdef CONFIG_AT91_CAN
 void at91_can_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 13, 0);	/* CAN_TX */
 	at91_set_a_periph(AT91_PIO_PORTA, 14, 1);	/* CAN_RX */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9263_ID_CAN);
+	writel(1 << AT91SAM9263_ID_CAN, &pmc->pcer);
 }
 #endif
diff --git a/cpu/arm926ejs/at91/at91sam9m10g45_devices.c b/cpu/arm926ejs/at91/at91sam9m10g45_devices.c
index 6881e46ada8..4ad9b1fcc98 100644
--- a/cpu/arm926ejs/at91/at91sam9m10g45_devices.c
+++ b/cpu/arm926ejs/at91/at91sam9m10g45_devices.c
@@ -30,30 +30,38 @@
 
 void at91_serial0_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 19, 1);	/* TXD0 */
 	at91_set_a_periph(AT91_PIO_PORTB, 18, 0);	/* RXD0 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9G45_ID_US0);
+	writel(1 << AT91SAM9G45_ID_US0, &pmc->pcer);
 }
 
 void at91_serial1_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 4, 1);		/* TXD1 */
 	at91_set_a_periph(AT91_PIO_PORTB, 5, 0);		/* RXD1 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9G45_ID_US1);
+	writel(1 << AT91SAM9G45_ID_US1, &pmc->pcer);
 }
 
 void at91_serial2_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTD, 6, 1);		/* TXD2 */
 	at91_set_a_periph(AT91_PIO_PORTD, 7, 0);		/* RXD2 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9G45_ID_US2);
+	writel(1 << AT91SAM9G45_ID_US2, &pmc->pcer);
 }
 
 void at91_serial3_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 12, 0);	/* DRXD */
 	at91_set_a_periph(AT91_PIO_PORTB, 13, 1);	/* DTXD */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);;
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 }
 
 void at91_serial_hw_init(void)
@@ -78,12 +86,14 @@ void at91_serial_hw_init(void)
 #ifdef CONFIG_ATMEL_SPI
 void at91_spi0_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 0, 0);	/* SPI0_MISO */
 	at91_set_a_periph(AT91_PIO_PORTB, 1, 0);	/* SPI0_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTB, 2, 0);	/* SPI0_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9G45_ID_SPI0);
+	writel(1 << AT91SAM9G45_ID_SPI0, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTB, 3, 0);
@@ -113,12 +123,14 @@ void at91_spi0_hw_init(unsigned long cs_mask)
 
 void at91_spi1_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTB, 14, 0);	/* SPI1_MISO */
 	at91_set_a_periph(AT91_PIO_PORTB, 15, 0);	/* SPI1_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTB, 16, 0);	/* SPI1_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9G45_ID_SPI1);
+	writel(1 << AT91SAM9G45_ID_SPI1, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTB, 17, 0);
diff --git a/cpu/arm926ejs/at91/at91sam9rl_devices.c b/cpu/arm926ejs/at91/at91sam9rl_devices.c
index d74e144da52..4f570f4fb55 100644
--- a/cpu/arm926ejs/at91/at91sam9rl_devices.c
+++ b/cpu/arm926ejs/at91/at91sam9rl_devices.c
@@ -30,30 +30,38 @@
 
 void at91_serial0_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 6, 1);		/* TXD0 */
 	at91_set_a_periph(AT91_PIO_PORTA, 7, 0);		/* RXD0 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_US0);
+	writel(1 << AT91SAM9RL_ID_US0, &pmc->pcer);
 }
 
 void at91_serial1_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 11, 1);		/* TXD1 */
 	at91_set_a_periph(AT91_PIO_PORTA, 12, 0);		/* RXD1 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_US1);
+	writel(1 << AT91SAM9RL_ID_US1, &pmc->pcer);
 }
 
 void at91_serial2_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 13, 1);		/* TXD2 */
 	at91_set_a_periph(AT91_PIO_PORTA, 14, 0);		/* RXD2 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_US2);
+	writel(1 << AT91SAM9RL_ID_US2, &pmc->pcer);
 }
 
 void at91_serial3_hw_init(void)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 21, 0);		/* DRXD */
 	at91_set_a_periph(AT91_PIO_PORTA, 22, 1);		/* DTXD */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 }
 
 void at91_serial_hw_init(void)
@@ -78,12 +86,14 @@ void at91_serial_hw_init(void)
 #ifdef CONFIG_HAS_DATAFLASH
 void at91_spi0_hw_init(unsigned long cs_mask)
 {
+	at91_pmc_t	*pmc	= (at91_pmc_t *) AT91_PMC_BASE;
+
 	at91_set_a_periph(AT91_PIO_PORTA, 25, 0);	/* SPI0_MISO */
 	at91_set_a_periph(AT91_PIO_PORTA, 26, 0);	/* SPI0_MOSI */
 	at91_set_a_periph(AT91_PIO_PORTA, 27, 0);	/* SPI0_SPCK */
 
 	/* Enable clock */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_SPI);
+	writel(1 << AT91SAM9RL_ID_SPI, &pmc->pcer);
 
 	if (cs_mask & (1 << 0)) {
 		at91_set_a_periph(AT91_PIO_PORTA, 28, 1);
diff --git a/cpu/arm926ejs/at91/clock.c b/cpu/arm926ejs/at91/clock.c
index 574f48824c0..7e039076f4d 100644
--- a/cpu/arm926ejs/at91/clock.c
+++ b/cpu/arm926ejs/at91/clock.c
@@ -13,9 +13,9 @@
 
 #include <config.h>
 #include <asm/arch/hardware.h>
+#include <asm/arch/io.h>
 #include <asm/arch/at91_pmc.h>
 #include <asm/arch/clk.h>
-#include <asm/arch/io.h>
 
 static unsigned long cpu_clk_rate_hz;
 static unsigned long main_clk_rate_hz;
@@ -57,14 +57,14 @@ u32 get_pllb_init(void)
 static unsigned long at91_css_to_rate(unsigned long css)
 {
 	switch (css) {
-		case AT91_PMC_CSS_SLOW:
-			return AT91_SLOW_CLOCK;
-		case AT91_PMC_CSS_MAIN:
-			return main_clk_rate_hz;
-		case AT91_PMC_CSS_PLLA:
-			return plla_rate_hz;
-		case AT91_PMC_CSS_PLLB:
-			return pllb_rate_hz;
+	case AT91_PMC_MCKR_CSS_SLOW:
+		return AT91_SLOW_CLOCK;
+	case AT91_PMC_MCKR_CSS_MAIN:
+		return main_clk_rate_hz;
+	case AT91_PMC_MCKR_CSS_PLLA:
+		return plla_rate_hz;
+	case AT91_PMC_MCKR_CSS_PLLB:
+		return pllb_rate_hz;
 	}
 
 	return 0;
@@ -146,6 +146,7 @@ static u32 at91_pll_rate(u32 freq, u32 reg)
 int at91_clock_init(unsigned long main_clock)
 {
 	unsigned freq, mckr;
+	at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
 #ifndef AT91_MAIN_CLOCK
 	unsigned tmp;
 	/*
@@ -164,7 +165,7 @@ int at91_clock_init(unsigned long main_clock)
 	main_clk_rate_hz = main_clock;
 
 	/* report if PLLA is more than mildly overclocked */
-	plla_rate_hz = at91_pll_rate(main_clock, at91_sys_read(AT91_CKGR_PLLAR));
+	plla_rate_hz = at91_pll_rate(main_clock, readl(&pmc->pllar));
 
 #ifdef CONFIG_USB_ATMEL
 	/*
@@ -174,7 +175,7 @@ int at91_clock_init(unsigned long main_clock)
 	 * REVISIT:  assumes MCK doesn't derive from PLLB!
 	 */
 	at91_pllb_usb_init = at91_pll_calc(main_clock, 48000000 * 2) |
-			     AT91_PMC_USB96M;
+			     AT91_PMC_PLLBR_USBDIV_2;
 	pllb_rate_hz = at91_pll_rate(main_clock, at91_pllb_usb_init);
 #endif
 
@@ -182,28 +183,32 @@ int at91_clock_init(unsigned long main_clock)
 	 * MCK and CPU derive from one of those primary clocks.
 	 * For now, assume this parentage won't change.
 	 */
-	mckr = at91_sys_read(AT91_PMC_MCKR);
+	mckr = readl(&pmc->mckr);
 #if defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
 	/* plla divisor by 2 */
 	plla_rate_hz /= (1 << ((mckr & 1 << 12) >> 12));
 #endif
-	freq = mck_rate_hz = at91_css_to_rate(mckr & AT91_PMC_CSS);
+	mck_rate_hz = at91_css_to_rate(mckr & AT91_PMC_MCKR_CSS_MASK);
+	freq = mck_rate_hz;
 
-	freq /= (1 << ((mckr & AT91_PMC_PRES) >> 2));			/* prescale */
+	freq /= (1 << ((mckr & AT91_PMC_MCKR_PRES_MASK) >> 2));	/* prescale */
 #if defined(CONFIG_AT91RM9200)
-	mck_rate_hz = freq / (1 + ((mckr & AT91_PMC_MDIV) >> 8));	/* mdiv */
+	/* mdiv */
+	mck_rate_hz = freq / (1 + ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
 #elif defined(CONFIG_AT91SAM9G20)
-	mck_rate_hz = (mckr & AT91_PMC_MDIV) ?
-		freq / ((mckr & AT91_PMC_MDIV) >> 7) : freq;		/* mdiv ; (x >> 7) = ((x >> 8) * 2) */
-	if (mckr & AT91_PMC_PDIV)
-		freq /= 2;						/* processor clock division */
+	/* mdiv ; (x >> 7) = ((x >> 8) * 2) */
+	mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) ?
+		freq / ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 7) : freq;
+	if (mckr & AT91_PMC_MCKR_MDIV_MASK)
+		freq /= 2;			/* processor clock division */
 #elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
-	mck_rate_hz = (mckr & AT91_PMC_MDIV) == AT91SAM9_PMC_MDIV_3 ?
-		freq / 3 : freq / (1 << ((mckr & AT91_PMC_MDIV) >> 8));	/* mdiv */
+	mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) == AT91SAM9_PMC_MDIV_3
+		? freq / 3
+		: freq / (1 << ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
 #else
-	mck_rate_hz = freq / (1 << ((mckr & AT91_PMC_MDIV) >> 8));	/* mdiv */
+	mck_rate_hz = freq / (1 << ((mckr & AT91_PMC_MCKR_MDIV_MASK) >> 8));
 #endif
 	cpu_clk_rate_hz = freq;
 
-		return 0;
+	return 0;
 }
diff --git a/cpu/arm926ejs/at91/cpu.c b/cpu/arm926ejs/at91/cpu.c
index f2f7b625509..993b29924ac 100644
--- a/cpu/arm926ejs/at91/cpu.c
+++ b/cpu/arm926ejs/at91/cpu.c
@@ -22,6 +22,10 @@
  */
 
 #include <common.h>
+#ifdef CONFIG_AT91_LEGACY
+#warning Your board is using legacy SoC access. Please update!
+#endif
+
 #include <asm/arch/hardware.h>
 #include <asm/arch/at91_pmc.h>
 #include <asm/arch/clk.h>
diff --git a/cpu/arm926ejs/at91/led.c b/cpu/arm926ejs/at91/led.c
index be68f5958a0..0a315c49710 100644
--- a/cpu/arm926ejs/at91/led.c
+++ b/cpu/arm926ejs/at91/led.c
@@ -24,6 +24,7 @@
 
 #include <common.h>
 #include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_pio.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/io.h>
 
diff --git a/cpu/arm926ejs/at91/lowlevel_init.S b/cpu/arm926ejs/at91/lowlevel_init.S
index f11ebc67b37..559c35c9ee7 100644
--- a/cpu/arm926ejs/at91/lowlevel_init.S
+++ b/cpu/arm926ejs/at91/lowlevel_init.S
@@ -27,15 +27,20 @@
  */
 
 #include <config.h>
-#include <version.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/at91_pmc.h>
-#include <asm/arch/at91_pio.h>
-#include <asm/arch/at91_rstc.h>
 #include <asm/arch/at91_wdt.h>
-#include <asm/arch/at91sam9_matrix.h>
+#include <asm/arch/at91_pio.h>
+#include <asm/arch/at91_matrix.h>
 #include <asm/arch/at91sam9_sdramc.h>
 #include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_rstc.h>
+#ifdef CONFIG_AT91_LEGACY
+#include <asm/arch/at91sam9_matrix.h>
+#endif
+#ifndef CONFIG_SYS_MATRIX_EBICSA_VAL
+#define CONFIG_SYS_MATRIX_EBICSA_VAL CONFIG_SYS_MATRIX_EBI0CSA_VAL
+#endif
 
 _TEXT_BASE:
 	.word	TEXT_BASE
@@ -75,7 +80,7 @@ POS1:
  * - Check if the PLL is already initialized
  * ----------------------------------------------------------------------------
  */
-	ldr	r1, =(AT91_BASE_SYS + AT91_PMC_MCKR)
+	ldr	r1, =(AT91_ASM_PMC_MCKR)
 	ldr	r0, [r1]
 	and	r0, r0, #3
 	cmp	r0, #0
@@ -85,18 +90,18 @@ POS1:
  * - Enable the Main Oscillator
  * ---------------------------------------------------------------------------
  */
-	ldr	r1, =(AT91_BASE_SYS + AT91_CKGR_MOR)
-	ldr	r2, =(AT91_BASE_SYS + AT91_PMC_SR)
+	ldr	r1, =(AT91_ASM_PMC_MOR)
+	ldr	r2, =(AT91_ASM_PMC_SR)
 	/* Main oscillator Enable register PMC_MOR: */
 	ldr	r0, =CONFIG_SYS_MOR_VAL
 	str	r0, [r1]
 
 	/* Reading the PMC Status to detect when the Main Oscillator is enabled */
-	mov	r4, #AT91_PMC_MOSCS
+	mov	r4, #AT91_PMC_IXR_MOSCS
 MOSCS_Loop:
 	ldr	r3, [r2]
 	and	r3, r4, r3
-	cmp	r3, #AT91_PMC_MOSCS
+	cmp	r3, #AT91_PMC_IXR_MOSCS
 	bne	MOSCS_Loop
 
 /* ----------------------------------------------------------------------------
@@ -105,16 +110,16 @@ MOSCS_Loop:
  * Setup PLLA
  * ----------------------------------------------------------------------------
  */
-	ldr	r1, =(AT91_BASE_SYS + AT91_CKGR_PLLAR)
+	ldr	r1, =(AT91_ASM_PMC_PLLAR)
 	ldr	r0, =CONFIG_SYS_PLLAR_VAL
 	str	r0, [r1]
 
 	/* Reading the PMC Status register to detect when the PLLA is locked */
-	mov	r4, #AT91_PMC_LOCKA
+	mov	r4, #AT91_PMC_IXR_LOCKA
 MOSCS_Loop1:
 	ldr	r3, [r2]
 	and	r3, r4, r3
-	cmp	r3, #AT91_PMC_LOCKA
+	cmp	r3, #AT91_PMC_IXR_LOCKA
 	bne	MOSCS_Loop1
 
 /* ----------------------------------------------------------------------------
@@ -123,38 +128,37 @@ MOSCS_Loop1:
  * - Switch on the Main Oscillator
  * ----------------------------------------------------------------------------
  */
-	ldr	r1, =(AT91_BASE_SYS + AT91_PMC_MCKR)
+	ldr	r1, =(AT91_ASM_PMC_MCKR)
 
 	/* -Master Clock Controller register PMC_MCKR */
 	ldr	r0, =CONFIG_SYS_MCKR1_VAL
 	str	r0, [r1]
 
 	/* Reading the PMC Status to detect when the Master clock is ready */
-	mov	r4, #AT91_PMC_MCKRDY
+	mov	r4, #AT91_PMC_IXR_MCKRDY
 MCKRDY_Loop:
 	ldr	r3, [r2]
 	and	r3, r4, r3
-	cmp	r3, #AT91_PMC_MCKRDY
+	cmp	r3, #AT91_PMC_IXR_MCKRDY
 	bne	MCKRDY_Loop
 
 	ldr	r0, =CONFIG_SYS_MCKR2_VAL
 	str	r0, [r1]
 
 	/* Reading the PMC Status to detect when the Master clock is ready */
-	mov	r4, #AT91_PMC_MCKRDY
+	mov	r4, #AT91_PMC_IXR_MCKRDY
 MCKRDY_Loop1:
 	ldr	r3, [r2]
 	and	r3, r4, r3
-	cmp	r3, #AT91_PMC_MCKRDY
+	cmp	r3, #AT91_PMC_IXR_MCKRDY
 	bne	MCKRDY_Loop1
-
 PLL_setup_end:
 
 /* ----------------------------------------------------------------------------
  * - memory control configuration 2
  * ----------------------------------------------------------------------------
  */
-	ldr	r0, =(AT91_BASE_SYS + AT91_SDRAMC_TR)
+	ldr	r0, =(AT91_ASM_SDRAMC_TR)
 	ldr	r1, [r0]
 	cmp	r1, #0
 	bne	SDRAM_setup_end
@@ -166,7 +170,6 @@ PLL_setup_end:
 	sub	r2, r2, r1
 	add	r0, r0, r5
 	add	r2, r2, r5
-
 2:
 	/* the address */
 	ldr	r1, [r0], #4
@@ -183,60 +186,53 @@ SDRAM_setup_end:
 	.ltorg
 
 SMRDATA:
-	.word (AT91_BASE_SYS + AT91_WDT_MR)
+	.word AT91_ASM_WDT_MR
 	.word CONFIG_SYS_WDTC_WDMR_VAL
-
 	/* configure PIOx as EBI0 D[16-31] */
 #if defined(CONFIG_AT91SAM9263)
-	.word (AT91_BASE_SYS + AT91_PIOD + PIO_PDR)
+	.word AT91_ASM_PIOD_PDR
 	.word CONFIG_SYS_PIOD_PDR_VAL1
-	.word (AT91_BASE_SYS + AT91_PIOD + PIO_PUDR)
+	.word AT91_ASM_PIOD_PUDR
 	.word CONFIG_SYS_PIOD_PPUDR_VAL
-	.word (AT91_BASE_SYS + AT91_PIOD + PIO_ASR)
+	.word AT91_ASM_PIOD_ASR
 	.word CONFIG_SYS_PIOD_PPUDR_VAL
 #elif defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9261) \
 	|| defined(CONFIG_AT91SAM9G20)
-	.word (AT91_BASE_SYS + AT91_PIOC + PIO_PDR)
+	.word AT91_ASM_PIOC_PDR
 	.word CONFIG_SYS_PIOC_PDR_VAL1
-	.word (AT91_BASE_SYS + AT91_PIOC + PIO_PUDR)
+	.word AT91_ASM_PIOC_PUDR
 	.word CONFIG_SYS_PIOC_PPUDR_VAL
 #endif
-
-#if defined(AT91_MATRIX_EBI0CSA)
-	.word (AT91_BASE_SYS + AT91_MATRIX_EBI0CSA)
-	.word CONFIG_SYS_MATRIX_EBI0CSA_VAL
-#else /* AT91_MATRIX_EBICSA */
-	.word (AT91_BASE_SYS + AT91_MATRIX_EBICSA)
+	.word AT91_ASM_MATRIX_CSA0
 	.word CONFIG_SYS_MATRIX_EBICSA_VAL
-#endif
 
 	/* flash */
-	.word (AT91_BASE_SYS + AT91_SMC_MODE(0))
+	.word AT91_ASM_SMC_MODE0
 	.word CONFIG_SYS_SMC0_MODE0_VAL
 
-	.word (AT91_BASE_SYS + AT91_SMC_CYCLE(0))
+	.word AT91_ASM_SMC_CYCLE0
 	.word CONFIG_SYS_SMC0_CYCLE0_VAL
 
-	.word (AT91_BASE_SYS + AT91_SMC_PULSE(0))
+	.word AT91_ASM_SMC_PULSE0
 	.word CONFIG_SYS_SMC0_PULSE0_VAL
 
-	.word (AT91_BASE_SYS + AT91_SMC_SETUP(0))
+	.word AT91_ASM_SMC_SETUP0
 	.word CONFIG_SYS_SMC0_SETUP0_VAL
 
 SMRDATA1:
-	.word (AT91_BASE_SYS + AT91_SDRAMC_MR)
+	.word AT91_ASM_SDRAMC_MR
 	.word CONFIG_SYS_SDRC_MR_VAL1
-	.word (AT91_BASE_SYS + AT91_SDRAMC_TR)
+	.word AT91_ASM_SDRAMC_TR
 	.word CONFIG_SYS_SDRC_TR_VAL1
-	.word (AT91_BASE_SYS + AT91_SDRAMC_CR)
+	.word AT91_ASM_SDRAMC_CR
 	.word CONFIG_SYS_SDRC_CR_VAL
-	.word (AT91_BASE_SYS + AT91_SDRAMC_MDR)
+	.word AT91_ASM_SDRAMC_MDR
 	.word CONFIG_SYS_SDRC_MDR_VAL
-	.word (AT91_BASE_SYS + AT91_SDRAMC_MR)
+	.word AT91_ASM_SDRAMC_MR
 	.word CONFIG_SYS_SDRC_MR_VAL2
 	.word AT91_SDRAM_BASE
 	.word CONFIG_SYS_SDRAM_VAL1
-	.word (AT91_BASE_SYS + AT91_SDRAMC_MR)
+	.word AT91_ASM_SDRAMC_MR
 	.word CONFIG_SYS_SDRC_MR_VAL3
 	.word AT91_SDRAM_BASE
 	.word CONFIG_SYS_SDRAM_VAL2
@@ -254,26 +250,25 @@ SMRDATA1:
 	.word CONFIG_SYS_SDRAM_VAL8
 	.word AT91_SDRAM_BASE
 	.word CONFIG_SYS_SDRAM_VAL9
-	.word (AT91_BASE_SYS + AT91_SDRAMC_MR)
+	.word AT91_ASM_SDRAMC_MR
 	.word CONFIG_SYS_SDRC_MR_VAL4
 	.word AT91_SDRAM_BASE
 	.word CONFIG_SYS_SDRAM_VAL10
-	.word (AT91_BASE_SYS + AT91_SDRAMC_MR)
+	.word AT91_ASM_SDRAMC_MR
 	.word CONFIG_SYS_SDRC_MR_VAL5
 	.word AT91_SDRAM_BASE
 	.word CONFIG_SYS_SDRAM_VAL11
-	.word (AT91_BASE_SYS + AT91_SDRAMC_TR)
+	.word AT91_ASM_SDRAMC_TR
 	.word CONFIG_SYS_SDRC_TR_VAL2
 	.word AT91_SDRAM_BASE
 	.word CONFIG_SYS_SDRAM_VAL12
 	/* User reset enable*/
-	.word (AT91_BASE_SYS + AT91_RSTC_MR)
+	.word AT91_ASM_RSTC_MR
 	.word CONFIG_SYS_RSTC_RMR_VAL
 #ifdef CONFIG_SYS_MATRIX_MCFG_REMAP
 	/* MATRIX_MCFG - REMAP all masters */
-	.word (AT91_BASE_SYS + AT91_MATRIX_MCFG0)
+	.word AT91_ASM_MATRIX_MCFG
 	.word 0x1FF
 #endif
-
 SMRDATA2:
 	.word 0
diff --git a/cpu/arm926ejs/at91/reset.c b/cpu/arm926ejs/at91/reset.c
index f963e14eda8..1b67e77887f 100644
--- a/cpu/arm926ejs/at91/reset.c
+++ b/cpu/arm926ejs/at91/reset.c
@@ -32,10 +32,12 @@
  */
 void reset_cpu(ulong ignored)
 {
+	at91_rstc_t *rstc = (at91_rstc_t *) AT91_RSTC_BASE;
+
 	/* this is the way Linux does it */
-	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY |
-				     AT91_RSTC_PROCRST |
-				     AT91_RSTC_PERRST);
+
+	writel(AT91_RSTC_KEY | AT91_RSTC_CR_PROCRST | AT91_RSTC_CR_PERRST,
+		&rstc->cr);
 
 	while (1);
 	/* Never reached */
diff --git a/cpu/arm926ejs/at91/timer.c b/cpu/arm926ejs/at91/timer.c
index 7352b5c3379..d21eebfb4eb 100644
--- a/cpu/arm926ejs/at91/timer.c
+++ b/cpu/arm926ejs/at91/timer.c
@@ -35,8 +35,6 @@
  * setting the 20 bit counter period to its maximum (0xfffff).
  */
 #define TIMER_LOAD_VAL	0xfffff
-#define READ_RESET_TIMER at91_sys_read(AT91_PIT_PIVR)
-#define READ_TIMER at91_sys_read(AT91_PIT_PIIR)
 
 static ulong timestamp;
 static ulong lastinc;
@@ -61,14 +59,16 @@ static inline unsigned long long usec_to_tick(unsigned long long usec)
 /* nothing really to do with interrupts, just starts up a counter. */
 int timer_init(void)
 {
+	at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE;
+	at91_pit_t *pit = (at91_pit_t *) AT91_PIT_BASE;
 	/*
 	 * Enable PITC Clock
 	 * The clock is already enabled for system controller in boot
 	 */
-	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+	writel(1 << AT91_ID_SYS, &pmc->pcer);
 
 	/* Enable PITC */
-	at91_sys_write(AT91_PIT_MR, TIMER_LOAD_VAL | AT91_PIT_PITEN);
+	writel(TIMER_LOAD_VAL | AT91_PIT_MR_EN , &pit->mr);
 
 	reset_timer_masked();
 
@@ -82,7 +82,9 @@ int timer_init(void)
  */
 unsigned long long get_ticks(void)
 {
-	ulong now = READ_TIMER;
+	at91_pit_t *pit = (at91_pit_t *) AT91_PIT_BASE;
+
+	ulong now = readl(&pit->piir);
 
 	if (now >= lastinc)	/* normal mode (non roll) */
 		/* move stamp forward with absolut diff ticks */
@@ -96,7 +98,10 @@ unsigned long long get_ticks(void)
 void reset_timer_masked(void)
 {
 	/* reset time */
-	lastinc = READ_TIMER; /* capture current incrementer value time */
+	at91_pit_t *pit = (at91_pit_t *) AT91_PIT_BASE;
+
+	/* capture current incrementer value time */
+	lastinc = readl(&pit->piir);
 	timestamp = 0; /* start "advancing" time stamp from 0 */
 }