arm: Remove unused ST-Ericsson u8500 arch

This arch does not seem to be supported / used at all in the current
U-Boot mainline source tree any more. So lets remove the core u8500 code
and code that was only referenced by this platform.

Please note that this patch also removes these config options:

- CONFIG_PL011_SERIAL_RLCR
- CONFIG_PL011_SERIAL_FLUSH_ON_INIT

As they only seem to be referenced by u8500 based boards. Without any
such board in the current code, these config option don't make sense
any more. Lets remove them as well.

If someone still wants to use this platform, then please send patches
to re-enable support by adding at least one board that references this
code.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: John Rigby <john.rigby@linaro.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>

6 files changed, 0 insertions, 629 deletions

diff --git a/arch/arm/cpu/armv7/u8500/Makefile b/arch/arm/cpu/armv7/u8500/Makefile
deleted file mode 100644
index fad9d4ae3a..0000000000
--- a/arch/arm/cpu/armv7/u8500/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# (C) Copyright 2000-2006
-# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
-
-obj-y	:= timer.o clock.o prcmu.o cpu.o
-obj-y	+= lowlevel.o
diff --git a/arch/arm/cpu/armv7/u8500/clock.c b/arch/arm/cpu/armv7/u8500/clock.c
deleted file mode 100644
index 1e3b3d5205..0000000000
--- a/arch/arm/cpu/armv7/u8500/clock.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * (C) Copyright 2009 ST-Ericsson
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-struct clkrst {
-	unsigned int pcken;
-	unsigned int pckdis;
-	unsigned int kcken;
-	unsigned int kckdis;
-};
-
-static unsigned int clkrst_base[] = {
-	U8500_CLKRST1_BASE,
-	U8500_CLKRST2_BASE,
-	U8500_CLKRST3_BASE,
-	0,
-	U8500_CLKRST5_BASE,
-	U8500_CLKRST6_BASE,
-	U8500_CLKRST7_BASE,	/* ED only */
-};
-
-/* Turn on peripheral clock at PRCC level */
-void u8500_clock_enable(int periph, int cluster, int kern)
-{
-	struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1];
-
-	if (kern != -1)
-		writel(1 << kern, &clkrst->kcken);
-
-	if (cluster != -1)
-		writel(1 << cluster, &clkrst->pcken);
-}
-
-void db8500_clocks_init(void)
-{
-	/*
-	 * Enable all clocks. This is u-boot, we can enable it all. There is no
-	 * powersave in u-boot.
-	 */
-
-	u8500_clock_enable(1, 9, -1); /* GPIO0 */
-	u8500_clock_enable(2, 11, -1);/* GPIO1 */
-	u8500_clock_enable(3, 8, -1); /* GPIO2 */
-	u8500_clock_enable(5, 1, -1); /* GPIO3 */
-	u8500_clock_enable(3, 6, 6);  /* UART2 */
-	u8500_clock_enable(3, 3, 3);  /* I2C0 */
-	u8500_clock_enable(1, 5, 5);  /* SDI0 */
-	u8500_clock_enable(2, 4, 2);  /* SDI4 */
-	u8500_clock_enable(6, 6, -1); /* MTU0 */
-	u8500_clock_enable(3, 4, 4);  /* SDI2 */
-
-	/*
-	 * Enabling clocks for all devices which are AMBA devices in the
-	 * kernel.  Otherwise they will not get probe()'d because the
-	 * peripheral ID register will not be powered.
-	 */
-
-	/* XXX: some of these differ between ED/V1 */
-
-	u8500_clock_enable(1, 1, 1);  /* UART1 */
-	u8500_clock_enable(1, 0, 0);  /* UART0 */
-	u8500_clock_enable(3, 2, 2);  /* SSP1 */
-	u8500_clock_enable(3, 1, 1);  /* SSP0 */
-	u8500_clock_enable(2, 8, -1); /* SPI0 */
-	u8500_clock_enable(2, 5, 3);  /* MSP2 */
-}
diff --git a/arch/arm/cpu/armv7/u8500/cpu.c b/arch/arm/cpu/armv7/u8500/cpu.c
deleted file mode 100644
index d8634bebbd..0000000000
--- a/arch/arm/cpu/armv7/u8500/cpu.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Copyright (C) 2012 Linaro Limited
- * Mathieu Poirier <mathieu.poirier@linaro.org>
- *
- * Based on original code from Joakim Axelsson at ST-Ericsson
- * (C) Copyright 2010 ST-Ericsson
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/prcmu.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/hardware.h>
-
-#include <asm/arch/hardware.h>
-
-#define CPUID_DB8500V1		0x411fc091
-#define CPUID_DB8500V2		0x412fc091
-#define ASICID_DB8500V11	0x008500A1
-
-#define CACHE_CONTR_BASE	0xA0412000
-/* Cache controller register offsets
- * as found in ARM's technical reference manual
- */
-#define CACHE_INVAL_BY_WAY	(CACHE_CONTR_BASE + 0x77C)
-#define CACHE_LOCKDOWN_BY_D	(CACHE_CONTR_BASE + 0X900)
-#define CACHE_LOCKDOWN_BY_I	(CACHE_CONTR_BASE + 0X904)
-
-static unsigned int read_asicid(void);
-
-static inline unsigned int read_cpuid(void)
-{
-	unsigned int val;
-
-	/* Main ID register (MIDR) */
-	asm("mrc        p15, 0, %0, c0, c0, 0"
-	   : "=r" (val)
-	   :
-	   : "cc");
-
-	return val;
-}
-
-static int cpu_is_u8500v11(void)
-{
-	return read_asicid() == ASICID_DB8500V11;
-}
-
-static int cpu_is_u8500v2(void)
-{
-	return read_cpuid() == CPUID_DB8500V2;
-}
-
-static unsigned int read_asicid(void)
-{
-	unsigned int *address;
-
-	if (cpu_is_u8500v2())
-		address = (void *) U8500_ASIC_ID_LOC_V2;
-	else
-		address = (void *) U8500_ASIC_ID_LOC_ED_V1;
-
-	return readl(address);
-}
-
-void cpu_cache_initialization(void)
-{
-	unsigned int value;
-	/* invalidate all cache entries */
-	writel(0xFFFF, CACHE_INVAL_BY_WAY);
-
-	/* ways are set to '0' when they are totally
-	 * cleaned and invalidated
-	 */
-	do {
-		value = readl(CACHE_INVAL_BY_WAY);
-	} while (value & 0xFF);
-
-	/* Invalidate register 9 D and I lockdown */
-	writel(0xFF, CACHE_LOCKDOWN_BY_D);
-	writel(0xFF, CACHE_LOCKDOWN_BY_I);
-}
-
-#ifdef CONFIG_ARCH_CPU_INIT
-/*
- * SOC specific cpu init
- */
-int arch_cpu_init(void)
-{
-	db8500_prcmu_init();
-	db8500_clocks_init();
-
-	return 0;
-}
-#endif /* CONFIG_ARCH_CPU_INIT */
-
-#ifdef CONFIG_MMC
-
-int u8500_mmc_power_init(void)
-{
-	int ret;
-	int enable, voltage;
-	int ab8500_revision;
-
-	if (!cpu_is_u8500v11() && !cpu_is_u8500v2())
-		return 0;
-
-	/* Get AB8500 revision */
-	ret = ab8500_read(AB8500_MISC, AB8500_REV_REG);
-	if (ret < 0)
-		goto out;
-
-	ab8500_revision = ret;
-
-	/*
-	 * On v1.1 HREF boards (HREF+), Vaux3 needs to be enabled for the SD
-	 * card to work.  This is done by enabling the regulators in the AB8500
-	 * via PRCMU I2C transactions.
-	 *
-	 * This code is derived from the handling of AB8500_LDO_VAUX3 in
-	 * ab8500_ldo_enable() and ab8500_ldo_disable() in Linux.
-	 *
-	 * Turn off and delay is required to have it work across soft reboots.
-	 */
-
-	/* Turn off (read-modify-write) */
-	ret = ab8500_read(AB8500_REGU_CTRL2,
-				AB8500_REGU_VRF1VAUX3_REGU_REG);
-	if (ret < 0)
-		goto out;
-
-	enable = ret;
-
-	/* Turn off */
-	ret = ab8500_write(AB8500_REGU_CTRL2,
-			AB8500_REGU_VRF1VAUX3_REGU_REG,
-			enable & ~LDO_VAUX3_ENABLE_MASK);
-	if (ret < 0)
-		goto out;
-
-	udelay(10 * 1000);
-
-	/* Set the voltage to 2.91 V or 2.9 V without overriding VRF1 value */
-	ret = ab8500_read(AB8500_REGU_CTRL2,
-			AB8500_REGU_VRF1VAUX3_SEL_REG);
-	if (ret < 0)
-		goto out;
-
-	voltage = ret;
-
-	if (ab8500_revision < 0x20) {
-		voltage &= ~LDO_VAUX3_SEL_MASK;
-		voltage |= LDO_VAUX3_SEL_2V9;
-	} else {
-		voltage &= ~LDO_VAUX3_V2_SEL_MASK;
-		voltage |= LDO_VAUX3_V2_SEL_2V91;
-	}
-
-	ret = ab8500_write(AB8500_REGU_CTRL2,
-			AB8500_REGU_VRF1VAUX3_SEL_REG, voltage);
-	if (ret < 0)
-		goto out;
-
-	/* Turn on the supply */
-	enable &= ~LDO_VAUX3_ENABLE_MASK;
-	enable |= LDO_VAUX3_ENABLE_VAL;
-
-	ret = ab8500_write(AB8500_REGU_CTRL2,
-			AB8500_REGU_VRF1VAUX3_REGU_REG, enable);
-
-out:
-	return ret;
-}
-#endif /* CONFIG_MMC */
diff --git a/arch/arm/cpu/armv7/u8500/lowlevel.S b/arch/arm/cpu/armv7/u8500/lowlevel.S
deleted file mode 100644
index d3e3920601..0000000000
--- a/arch/arm/cpu/armv7/u8500/lowlevel.S
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * (C) Copyright 2011 ST-Ericsson
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <config.h>
-#include <linux/linkage.h>
-
-ENTRY(lowlevel_init)
-	mov	pc, lr
-ENDPROC(lowlevel_init)
-
-	.align	5
-ENTRY(reset_cpu)
-	ldr r0, =CFG_PRCMU_BASE
-	ldr r1, =0x1
-	str r1, [r0, #0x228]
-_loop_forever:
-	b	_loop_forever
-ENDPROC(reset_cpu)
diff --git a/arch/arm/cpu/armv7/u8500/prcmu.c b/arch/arm/cpu/armv7/u8500/prcmu.c
deleted file mode 100644
index 26ffdc2e02..0000000000
--- a/arch/arm/cpu/armv7/u8500/prcmu.c
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
- * Copyright (C) 2009 ST-Ericsson SA
- *
- * Adapted from the Linux version:
- * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-/*
- * NOTE: This currently does not support the I2C workaround access method.
- */
-
-#include <common.h>
-#include <config.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
-#include <asm/types.h>
-#include <asm/io.h>
-#include <asm/errno.h>
-#include <asm/arch/prcmu.h>
-
-/* CPU mailbox registers */
-#define PRCMU_I2C_WRITE(slave)  \
-	(((slave) << 1) | I2CWRITE | (1 << 6))
-#define PRCMU_I2C_READ(slave) \
-	(((slave) << 1) | I2CREAD | (1 << 6))
-
-#define I2C_MBOX_BIT    (1 << 5)
-
-static int prcmu_is_ready(void)
-{
-	int ready = readb(PRCM_XP70_CUR_PWR_STATE) == AP_EXECUTE;
-	if (!ready)
-		printf("PRCMU firmware not ready\n");
-	return ready;
-}
-
-static int wait_for_i2c_mbx_rdy(void)
-{
-	int timeout = 10000;
-
-	if (readl(PRCM_ARM_IT1_VAL) & I2C_MBOX_BIT) {
-		printf("prcmu: warning i2c mailbox was not acked\n");
-		/* clear mailbox 5 ack irq */
-		writel(I2C_MBOX_BIT, PRCM_ARM_IT1_CLEAR);
-	}
-
-	/* check any already on-going transaction */
-	while ((readl(PRCM_MBOX_CPU_VAL) & I2C_MBOX_BIT) && timeout)
-		timeout--;
-
-	if (timeout == 0)
-		return -1;
-
-	return 0;
-}
-
-static int wait_for_i2c_req_done(void)
-{
-	int timeout = 10000;
-
-	/* Set an interrupt to XP70 */
-	writel(I2C_MBOX_BIT, PRCM_MBOX_CPU_SET);
-
-	/* wait for mailbox 5 (i2c) ack */
-	while (!(readl(PRCM_ARM_IT1_VAL) & I2C_MBOX_BIT) && timeout)
-		timeout--;
-
-	if (timeout == 0)
-		return -1;
-
-	return 0;
-}
-
-/**
- * prcmu_i2c_read - PRCMU - 4500 communication using PRCMU I2C
- * @reg: - db8500 register bank to be accessed
- * @slave:  - db8500 register to be accessed
- * Returns: ACK_MB5  value containing the status
- */
-int prcmu_i2c_read(u8 reg, u16 slave)
-{
-	uint8_t i2c_status;
-	uint8_t i2c_val;
-	int ret;
-
-	if (!prcmu_is_ready())
-		return -1;
-
-	debug("\nprcmu_4500_i2c_read:bank=%x;reg=%x;\n",
-			reg, slave);
-
-	ret = wait_for_i2c_mbx_rdy();
-	if (ret) {
-		printf("prcmu_i2c_read: mailbox became not ready\n");
-		return ret;
-	}
-
-	/* prepare the data for mailbox 5 */
-	writeb(PRCMU_I2C_READ(reg), PRCM_REQ_MB5_I2COPTYPE_REG);
-	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
-	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
-	writeb(0, PRCM_REQ_MB5_I2CVAL);
-
-	ret = wait_for_i2c_req_done();
-	if (ret) {
-		printf("prcmu_i2c_read: mailbox request timed out\n");
-		return ret;
-	}
-
-	/* retrieve values */
-	debug("ack-mb5:transfer status = %x\n",
-			readb(PRCM_ACK_MB5_STATUS));
-	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
-	debug("ack-mb5:slave_add = %x\n",
-			readb(PRCM_ACK_MB5_SLAVE));
-	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
-
-	i2c_status = readb(PRCM_ACK_MB5_STATUS);
-	i2c_val = readb(PRCM_ACK_MB5_VAL);
-	/* clear mailbox 5 ack irq */
-	writel(I2C_MBOX_BIT, PRCM_ARM_IT1_CLEAR);
-
-	if (i2c_status == I2C_RD_OK)
-		return i2c_val;
-
-	printf("prcmu_i2c_read:read return status= %d\n", i2c_status);
-	return -1;
-}
-
-/**
- * prcmu_i2c_write - PRCMU-db8500 communication using PRCMU I2C
- * @reg: - db8500 register bank to be accessed
- * @slave:  - db800 register to be written to
- * @reg_data: - the data to write
- * Returns: ACK_MB5 value containing the status
- */
-int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data)
-{
-	uint8_t i2c_status;
-	int ret;
-
-	if (!prcmu_is_ready())
-		return -1;
-
-	debug("\nprcmu_4500_i2c_write:bank=%x;reg=%x;\n",
-			reg, slave);
-
-	ret = wait_for_i2c_mbx_rdy();
-	if (ret) {
-		printf("prcmu_i2c_write: mailbox became not ready\n");
-		return ret;
-	}
-
-	/* prepare the data for mailbox 5 */
-	writeb(PRCMU_I2C_WRITE(reg), PRCM_REQ_MB5_I2COPTYPE_REG);
-	writeb((1 << 3) | 0x0, PRCM_REQ_MB5_BIT_FIELDS);
-	writeb(slave, PRCM_REQ_MB5_I2CSLAVE);
-	writeb(reg_data, PRCM_REQ_MB5_I2CVAL);
-
-	ret = wait_for_i2c_req_done();
-	if (ret) {
-		printf("prcmu_i2c_write: mailbox request timed out\n");
-		return ret;
-	}
-
-	/* retrieve values */
-	debug("ack-mb5:transfer status = %x\n",
-			readb(PRCM_ACK_MB5_STATUS));
-	debug("ack-mb5:reg bank = %x\n", readb(PRCM_ACK_MB5) >> 1);
-	debug("ack-mb5:slave_add = %x\n",
-			readb(PRCM_ACK_MB5_SLAVE));
-	debug("ack-mb5:reg_val = %d\n", readb(PRCM_ACK_MB5_VAL));
-
-	i2c_status = readb(PRCM_ACK_MB5_STATUS);
-	debug("\ni2c_status = %x\n", i2c_status);
-	/* clear mailbox 5 ack irq */
-	writel(I2C_MBOX_BIT, PRCM_ARM_IT1_CLEAR);
-
-	if (i2c_status == I2C_WR_OK)
-		return 0;
-
-	printf("%s: i2c_status : 0x%x\n", __func__, i2c_status);
-	return -1;
-}
-
-void u8500_prcmu_enable(u32 *reg)
-{
-	writel(readl(reg) | (1 << 8), reg);
-}
-
-void db8500_prcmu_init(void)
-{
-	/* Enable timers */
-	writel(1 << 17, PRCM_TCR);
-
-	u8500_prcmu_enable((u32 *)PRCM_PER1CLK_MGT_REG);
-	u8500_prcmu_enable((u32 *)PRCM_PER2CLK_MGT_REG);
-	u8500_prcmu_enable((u32 *)PRCM_PER3CLK_MGT_REG);
-	/* PER4CLK does not exist */
-	u8500_prcmu_enable((u32 *)PRCM_PER5CLK_MGT_REG);
-	u8500_prcmu_enable((u32 *)PRCM_PER6CLK_MGT_REG);
-	/* Only exists in ED but is always ok to write to */
-	u8500_prcmu_enable((u32 *)PRCM_PER7CLK_MGT_REG);
-
-	u8500_prcmu_enable((u32 *)PRCM_UARTCLK_MGT_REG);
-	u8500_prcmu_enable((u32 *)PRCM_I2CCLK_MGT_REG);
-
-	u8500_prcmu_enable((u32 *)PRCM_SDMMCCLK_MGT_REG);
-
-	/* Clean up the mailbox interrupts after pre-u-boot code. */
-	writel(I2C_MBOX_BIT, PRCM_ARM_IT1_CLEAR);
-}
diff --git a/arch/arm/cpu/armv7/u8500/timer.c b/arch/arm/cpu/armv7/u8500/timer.c
deleted file mode 100644
index 6b74e13d9c..0000000000
--- a/arch/arm/cpu/armv7/u8500/timer.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (C) 2010 Linaro Limited
- * John Rigby <john.rigby@linaro.org>
- *
- * Based on original from Linux kernel source and
- * internal ST-Ericsson U-Boot source.
- * (C) Copyright 2009 Alessandro Rubini
- * (C) Copyright 2010 ST-Ericsson
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/*
- * The MTU device has some interrupt control registers
- * followed by 4 timers.
- */
-
-/* The timers */
-struct u8500_mtu_timer {
-	u32 lr;			/* Load value */
-	u32 cv;			/* Current value */
-	u32 cr;			/* Control reg */
-	u32 bglr;		/* ??? */
-};
-
-/* The MTU that contains the timers */
-struct u8500_mtu {
-	u32 imsc;		/* Interrupt mask set/clear */
-	u32 ris;		/* Raw interrupt status */
-	u32 mis;		/* Masked interrupt status */
-	u32 icr;		/* Interrupt clear register */
-	struct u8500_mtu_timer pt[4];
-};
-
-/* bits for the control register */
-#define MTU_CR_ONESHOT		0x01	/* if 0 = wraps reloading from BGLR */
-#define MTU_CR_32BITS		0x02
-
-#define MTU_CR_PRESCALE_1	0x00
-#define MTU_CR_PRESCALE_16	0x04
-#define MTU_CR_PRESCALE_256	0x08
-#define MTU_CR_PRESCALE_MASK	0x0c
-
-#define MTU_CR_PERIODIC		0x40	/* if 0 = free-running */
-#define MTU_CR_ENA		0x80
-
-/*
- * The MTU is clocked at 133 MHz by default. (V1 and later)
- */
-#define TIMER_CLOCK		(133 * 1000 * 1000 / 16)
-#define COUNT_TO_USEC(x)	((x) * 16 / 133)
-#define USEC_TO_COUNT(x)	((x) * 133 / 16)
-#define TICKS_PER_HZ		(TIMER_CLOCK / CONFIG_SYS_HZ)
-#define TICKS_TO_HZ(x)		((x) / TICKS_PER_HZ)
-#define TIMER_LOAD_VAL		0xffffffff
-
-/*
- * MTU timer to use (from 0 to 3).
- */
-#define MTU_TIMER 2
-
-static struct u8500_mtu_timer *timer_base =
-	&((struct u8500_mtu *)U8500_MTU0_BASE_V1)->pt[MTU_TIMER];
-
-/* macro to read the 32 bit timer: since it decrements, we invert read value */
-#define READ_TIMER() (~readl(&timer_base->cv))
-
-/* Configure a free-running, auto-wrap counter with /16 prescaler */
-int timer_init(void)
-{
-	writel(MTU_CR_ENA | MTU_CR_PRESCALE_16 | MTU_CR_32BITS,
-	       &timer_base->cr);
-	return 0;
-}
-
-ulong get_timer_masked(void)
-{
-	/* current tick value */
-	ulong now = TICKS_TO_HZ(READ_TIMER());
-
-	if (now >= gd->arch.lastinc) {	/* normal (non rollover) */
-		gd->arch.tbl += (now - gd->arch.lastinc);
-	} else {			/* rollover */
-		gd->arch.tbl += (TICKS_TO_HZ(TIMER_LOAD_VAL) -
-					gd->arch.lastinc) + now;
-	}
-	gd->arch.lastinc = now;
-	return gd->arch.tbl;
-}
-
-/* Delay x useconds */
-void __udelay(ulong usec)
-{
-	long tmo = usec * (TIMER_CLOCK / 1000) / 1000;
-	ulong now, last = READ_TIMER();
-
-	while (tmo > 0) {
-		now = READ_TIMER();
-		if (now > last)	/* normal (non rollover) */
-			tmo -= now - last;
-		else		/* rollover */
-			tmo -= TIMER_LOAD_VAL - last + now;
-		last = now;
-	}
-}
-
-ulong get_timer(ulong base)
-{
-	return get_timer_masked() - base;
-}
-
-/*
- * Emulation of Power architecture long long timebase.
- *
- * TODO: Support gd->arch.tbu for real long long timebase.
- */
-unsigned long long get_ticks(void)
-{
-	return get_timer(0);
-}
-
-/*
- * Emulation of Power architecture timebase.
- * NB: Low resolution compared to Power tbclk.
- */
-ulong get_tbclk(void)
-{
-	return CONFIG_SYS_HZ;
-}