m68k: Move cpu/$CPU to arch/m68k/cpu/$CPU

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

7 files changed, 1067 insertions, 0 deletions

diff --git a/arch/m68k/cpu/mcf5227x/Makefile b/arch/m68k/cpu/mcf5227x/Makefile
new file mode 100644
index 0000000000..d0e9b4550f
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/Makefile
@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# 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.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+# CFLAGS += -DET_DEBUG
+
+LIB	= lib$(CPU).a
+
+START	= start.o
+COBJS	= cpu.o speed.o cpu_init.o interrupts.o
+
+SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+START	:= $(addprefix $(obj),$(START))
+
+all:	$(obj).depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/m68k/cpu/mcf5227x/config.mk b/arch/m68k/cpu/mcf5227x/config.mk
new file mode 100644
index 0000000000..8eab49dff9
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/config.mk
@@ -0,0 +1,31 @@
+#
+# (C) Copyright 2003 Josef Baumgartner <josef.baumgartner@telex.de>
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
+PLATFORM_CPPFLAGS += -mcpu=52277 -fPIC
+else
+PLATFORM_CPPFLAGS += -m5307 -fPIC
+endif
diff --git a/arch/m68k/cpu/mcf5227x/cpu.c b/arch/m68k/cpu/mcf5227x/cpu.c
new file mode 100644
index 0000000000..d9f5f43c3c
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/cpu.c
@@ -0,0 +1,77 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+
+#include <asm/immap.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
+{
+	volatile rcm_t *rcm = (rcm_t *) (MMAP_RCM);
+	udelay(1000);
+	rcm->rcr |= RCM_RCR_SOFTRST;
+
+	/* we don't return! */
+	return 0;
+};
+
+int checkcpu(void)
+{
+	volatile ccm_t *ccm = (ccm_t *) MMAP_CCM;
+	u16 msk;
+	u16 id = 0;
+	u8 ver;
+
+	puts("CPU:   ");
+	msk = (ccm->cir >> 6);
+	ver = (ccm->cir & 0x003f);
+	switch (msk) {
+	case 0x6c:
+		id = 52277;
+		break;
+	}
+
+	if (id) {
+		char buf1[32], buf2[32], buf3[32];
+
+		printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
+		       ver);
+		printf("       CPU CLK %s MHz BUS CLK %s MHz FLB CLK %s MHz\n",
+		       strmhz(buf1, gd->cpu_clk),
+		       strmhz(buf2, gd->bus_clk),
+		       strmhz(buf3, gd->flb_clk));
+		printf("       INP CLK %s MHz VCO CLK %s MHz\n",
+		       strmhz(buf1, gd->inp_clk),
+		       strmhz(buf2, gd->vco_clk));
+	}
+
+	return 0;
+}
diff --git a/arch/m68k/cpu/mcf5227x/cpu_init.c b/arch/m68k/cpu/mcf5227x/cpu_init.c
new file mode 100644
index 0000000000..beb78f5839
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/cpu_init.c
@@ -0,0 +1,206 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <watchdog.h>
+
+#include <asm/immap.h>
+#include <asm/rtc.h>
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ * initialize the UPM's
+ */
+void cpu_init_f(void)
+{
+	volatile scm1_t *scm1 = (scm1_t *) MMAP_SCM1;
+	volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+	volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
+	volatile pll_t *pll = (volatile pll_t *)MMAP_PLL;
+
+#if !defined(CONFIG_CF_SBF)
+	/* Workaround, must place before fbcs */
+	pll->psr = 0x12;
+
+	scm1->mpr = 0x77777777;
+	scm1->pacra = 0;
+	scm1->pacrb = 0;
+	scm1->pacrc = 0;
+	scm1->pacrd = 0;
+	scm1->pacre = 0;
+	scm1->pacrf = 0;
+	scm1->pacrg = 0;
+	scm1->pacri = 0;
+
+#if (defined(CONFIG_SYS_CS0_BASE) && defined(CONFIG_SYS_CS0_MASK) \
+     && defined(CONFIG_SYS_CS0_CTRL))
+	fbcs->csar0 = CONFIG_SYS_CS0_BASE;
+	fbcs->cscr0 = CONFIG_SYS_CS0_CTRL;
+	fbcs->csmr0 = CONFIG_SYS_CS0_MASK;
+#endif
+#endif				/* CONFIG_CF_SBF */
+
+#if (defined(CONFIG_SYS_CS1_BASE) && defined(CONFIG_SYS_CS1_MASK) \
+     && defined(CONFIG_SYS_CS1_CTRL))
+	fbcs->csar1 = CONFIG_SYS_CS1_BASE;
+	fbcs->cscr1 = CONFIG_SYS_CS1_CTRL;
+	fbcs->csmr1 = CONFIG_SYS_CS1_MASK;
+#endif
+
+#if (defined(CONFIG_SYS_CS2_BASE) && defined(CONFIG_SYS_CS2_MASK) \
+     && defined(CONFIG_SYS_CS2_CTRL))
+	fbcs->csar2 = CONFIG_SYS_CS2_BASE;
+	fbcs->cscr2 = CONFIG_SYS_CS2_CTRL;
+	fbcs->csmr2 = CONFIG_SYS_CS2_MASK;
+#endif
+
+#if (defined(CONFIG_SYS_CS3_BASE) && defined(CONFIG_SYS_CS3_MASK) \
+     && defined(CONFIG_SYS_CS3_CTRL))
+	fbcs->csar3 = CONFIG_SYS_CS3_BASE;
+	fbcs->cscr3 = CONFIG_SYS_CS3_CTRL;
+	fbcs->csmr3 = CONFIG_SYS_CS3_MASK;
+#endif
+
+#if (defined(CONFIG_SYS_CS4_BASE) && defined(CONFIG_SYS_CS4_MASK) \
+     && defined(CONFIG_SYS_CS4_CTRL))
+	fbcs->csar4 = CONFIG_SYS_CS4_BASE;
+	fbcs->cscr4 = CONFIG_SYS_CS4_CTRL;
+	fbcs->csmr4 = CONFIG_SYS_CS4_MASK;
+#endif
+
+#if (defined(CONFIG_SYS_CS5_BASE) && defined(CONFIG_SYS_CS5_MASK) \
+     && defined(CONFIG_SYS_CS5_CTRL))
+	fbcs->csar5 = CONFIG_SYS_CS5_BASE;
+	fbcs->cscr5 = CONFIG_SYS_CS5_CTRL;
+	fbcs->csmr5 = CONFIG_SYS_CS5_MASK;
+#endif
+
+#ifdef CONFIG_FSL_I2C
+	gpio->par_i2c = GPIO_PAR_I2C_SCL_SCL | GPIO_PAR_I2C_SDA_SDA;
+#endif
+
+	icache_enable();
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r(void)
+{
+#ifdef CONFIG_MCFRTC
+	volatile rtc_t *rtc = (volatile rtc_t *)(CONFIG_SYS_MCFRTC_BASE);
+	volatile rtcex_t *rtcex = (volatile rtcex_t *)&rtc->extended;
+
+	rtcex->gocu = (CONFIG_SYS_RTC_OSCILLATOR >> 16) & 0xFFFF;
+	rtcex->gocl = CONFIG_SYS_RTC_OSCILLATOR & 0xFFFF;
+#endif
+
+	return (0);
+}
+
+void uart_port_conf(int port)
+{
+	volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+	/* Setup Ports: */
+	switch (port) {
+	case 0:
+		gpio->par_uart &=
+		    (GPIO_PAR_UART_U0TXD_UNMASK & GPIO_PAR_UART_U0RXD_UNMASK);
+		gpio->par_uart |=
+		    (GPIO_PAR_UART_U0TXD_U0TXD | GPIO_PAR_UART_U0RXD_U0RXD);
+		break;
+	case 1:
+		gpio->par_uart &=
+		    (GPIO_PAR_UART_U1TXD_UNMASK & GPIO_PAR_UART_U1RXD_UNMASK);
+		gpio->par_uart |=
+		    (GPIO_PAR_UART_U1TXD_U1TXD | GPIO_PAR_UART_U1RXD_U1RXD);
+		break;
+	case 2:
+		gpio->par_dspi &=
+		    (GPIO_PAR_DSPI_SIN_UNMASK & GPIO_PAR_DSPI_SOUT_UNMASK);
+		gpio->par_dspi =
+		    (GPIO_PAR_DSPI_SIN_U2RXD | GPIO_PAR_DSPI_SOUT_U2TXD);
+		break;
+	}
+}
+
+#ifdef CONFIG_CF_DSPI
+void cfspi_port_conf(void)
+{
+	volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+	gpio->par_dspi =
+	    GPIO_PAR_DSPI_SIN_SIN | GPIO_PAR_DSPI_SOUT_SOUT |
+	    GPIO_PAR_DSPI_SCK_SCK;
+}
+
+int cfspi_claim_bus(uint bus, uint cs)
+{
+	volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+	volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+	if ((dspi->sr & DSPI_SR_TXRXS) != DSPI_SR_TXRXS)
+		return -1;
+
+	/* Clear FIFO and resume transfer */
+	dspi->mcr &= ~(DSPI_MCR_CTXF | DSPI_MCR_CRXF);
+
+	switch (cs) {
+	case 0:
+		gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_UNMASK;
+		gpio->par_dspi |= GPIO_PAR_DSPI_PCS0_PCS0;
+		break;
+	case 2:
+		gpio->par_timer &= GPIO_PAR_TIMER_T2IN_UNMASK;
+		gpio->par_timer |= GPIO_PAR_TIMER_T2IN_DSPIPCS2;
+		break;
+	}
+
+	return 0;
+}
+
+void cfspi_release_bus(uint bus, uint cs)
+{
+	volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+	volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+	dspi->mcr &= ~(DSPI_MCR_CTXF | DSPI_MCR_CRXF);	/* Clear FIFO */
+
+	switch (cs) {
+	case 0:
+		gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0;
+		break;
+	case 2:
+		gpio->par_timer &= GPIO_PAR_TIMER_T2IN_UNMASK;
+		break;
+	}
+}
+#endif
diff --git a/arch/m68k/cpu/mcf5227x/interrupts.c b/arch/m68k/cpu/mcf5227x/interrupts.c
new file mode 100644
index 0000000000..85828a67b5
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/interrupts.c
@@ -0,0 +1,52 @@
+/*
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* CPU specific interrupt routine */
+#include <common.h>
+#include <asm/immap.h>
+
+int interrupt_init(void)
+{
+	volatile int0_t *intp = (int0_t *) (CONFIG_SYS_INTR_BASE);
+
+	/* Make sure all interrupts are disabled */
+	intp->imrh0 |= 0xFFFFFFFF;
+	intp->imrl0 |= 0xFFFFFFFF;
+
+	enable_interrupts();
+	return 0;
+}
+
+#if defined(CONFIG_MCFTMR)
+void dtimer_intr_setup(void)
+{
+	volatile int0_t *intp = (int0_t *) (CONFIG_SYS_INTR_BASE);
+
+	intp->icr0[CONFIG_SYS_TMRINTR_NO] = CONFIG_SYS_TMRINTR_PRI;
+	intp->imrh0 &= ~CONFIG_SYS_TMRINTR_MASK;
+}
+#endif
diff --git a/arch/m68k/cpu/mcf5227x/speed.c b/arch/m68k/cpu/mcf5227x/speed.c
new file mode 100644
index 0000000000..7e385d3998
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/speed.c
@@ -0,0 +1,140 @@
+/*
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+
+#include <asm/immap.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Low Power Divider specifications
+ */
+#define CLOCK_LPD_MIN		(1 << 0)	/* Divider (decoded) */
+#define CLOCK_LPD_MAX		(1 << 15)	/* Divider (decoded) */
+
+#define CLOCK_PLL_FVCO_MAX	540000000
+#define CLOCK_PLL_FVCO_MIN	300000000
+
+#define CLOCK_PLL_FSYS_MAX	266666666
+#define CLOCK_PLL_FSYS_MIN	100000000
+#define MHZ			1000000
+
+void clock_enter_limp(int lpdiv)
+{
+	volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM;
+	int i, j;
+
+	/* Check bounds of divider */
+	if (lpdiv < CLOCK_LPD_MIN)
+		lpdiv = CLOCK_LPD_MIN;
+	if (lpdiv > CLOCK_LPD_MAX)
+		lpdiv = CLOCK_LPD_MAX;
+
+	/* Round divider down to nearest power of two */
+	for (i = 0, j = lpdiv; j != 1; j >>= 1, i++) ;
+
+	/* Apply the divider to the system clock */
+	ccm->cdr = (ccm->cdr & 0xF0FF) | CCM_CDR_LPDIV(i);
+
+	/* Enable Limp Mode */
+	ccm->misccr |= CCM_MISCCR_LIMP;
+}
+
+/*
+ * brief   Exit Limp mode
+ * warning The PLL should be set and locked prior to exiting Limp mode
+ */
+void clock_exit_limp(void)
+{
+	volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM;
+	volatile pll_t *pll = (volatile pll_t *)MMAP_PLL;
+
+	/* Exit Limp mode */
+	ccm->misccr &= ~CCM_MISCCR_LIMP;
+
+	/* Wait for the PLL to lock */
+	while (!(pll->psr & PLL_PSR_LOCK)) ;
+}
+
+/*
+ * get_clocks() fills in gd->cpu_clock and gd->bus_clk
+ */
+int get_clocks(void)
+{
+
+	volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM;
+	volatile pll_t *pll = (volatile pll_t *)MMAP_PLL;
+	int vco, temp, pcrvalue, pfdr;
+	u8 bootmode;
+
+	pcrvalue = pll->pcr & 0xFF0F0FFF;
+	pfdr = pcrvalue >> 24;
+
+	if (pfdr == 0x1E)
+		bootmode = 0;	/* Normal Mode */
+
+#ifdef CONFIG_CF_SBF
+	bootmode = 3;		/* Serial Mode */
+#endif
+
+	if (bootmode == 0) {
+		/* Normal mode */
+		vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
+		if ((vco < CLOCK_PLL_FVCO_MIN) || (vco > CLOCK_PLL_FVCO_MAX)) {
+			/* Default value */
+			pcrvalue = (pll->pcr & 0x00FFFFFF);
+			pcrvalue |= 0x1E << 24;
+			pll->pcr = pcrvalue;
+			vco =
+			    ((pll->pcr & 0xFF000000) >> 24) *
+			    CONFIG_SYS_INPUT_CLKSRC;
+		}
+		gd->vco_clk = vco;	/* Vco clock */
+	} else if (bootmode == 3) {
+		/* serial mode */
+		vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
+		gd->vco_clk = vco;	/* Vco clock */
+	}
+
+	if ((ccm->ccr & CCM_MISCCR_LIMP) == CCM_MISCCR_LIMP) {
+		/* Limp mode */
+	} else {
+		gd->inp_clk = CONFIG_SYS_INPUT_CLKSRC;	/* Input clock */
+
+		temp = (pll->pcr & PLL_PCR_OUTDIV1_MASK) + 1;
+		gd->cpu_clk = vco / temp;	/* cpu clock */
+
+		temp = ((pll->pcr & PLL_PCR_OUTDIV2_MASK) >> 4) + 1;
+		gd->flb_clk = vco / temp;	/* flexbus clock */
+		gd->bus_clk = gd->flb_clk;
+	}
+
+#ifdef CONFIG_FSL_I2C
+	gd->i2c1_clk = gd->bus_clk;
+#endif
+
+	return (0);
+}
diff --git a/arch/m68k/cpu/mcf5227x/start.S b/arch/m68k/cpu/mcf5227x/start.S
new file mode 100644
index 0000000000..30428f15d8
--- /dev/null
+++ b/arch/m68k/cpu/mcf5227x/start.S
@@ -0,0 +1,513 @@
+/*
+ * Copyright (C) 2003	Josef Baumgartner <josef.baumgartner@telex.de>
+ * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <timestamp.h>
+#include "version.h"
+#include <asm/cache.h>
+
+#ifndef	 CONFIG_IDENT_STRING
+#define	 CONFIG_IDENT_STRING ""
+#endif
+
+#define _START	_start
+#define _FAULT	_fault
+
+#define SAVE_ALL						\
+	move.w	#0x2700,%sr;		/* disable intrs */	\
+	subl	#60,%sp;		/* space for 15 regs */ \
+	moveml	%d0-%d7/%a0-%a6,%sp@;
+
+#define RESTORE_ALL						\
+	moveml	%sp@,%d0-%d7/%a0-%a6;				\
+	addl	#60,%sp;		/* space for 15 regs */ \
+	rte;
+
+#if defined(CONFIG_CF_SBF)
+#define ASM_DRAMINIT	(asm_dram_init - TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
+#define ASM_SBF_IMG_HDR	(asm_sbf_img_hdr - TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
+#endif
+
+.text
+/*
+ *	Vector table. This is used for initial platform startup.
+ *	These vectors are to catch any un-intended traps.
+ */
+_vectors:
+
+#if defined(CONFIG_CF_SBF)
+INITSP:		.long	0		/* Initial SP	*/
+INITPC:		.long	ASM_DRAMINIT	/* Initial PC 	*/
+#else
+INITSP:		.long	0	/* Initial SP	*/
+INITPC:		.long	_START	/* Initial PC 		*/
+#endif
+
+vector02:	.long	_FAULT	/* Access Error		*/
+vector03:	.long	_FAULT	/* Address Error	*/
+vector04:	.long	_FAULT	/* Illegal Instruction	*/
+vector05:	.long	_FAULT	/* Reserved		*/
+vector06:	.long	_FAULT	/* Reserved		*/
+vector07:	.long	_FAULT	/* Reserved		*/
+vector08:	.long	_FAULT	/* Privilege Violation	*/
+vector09:	.long	_FAULT	/* Trace		*/
+vector0A:	.long	_FAULT	/* Unimplemented A-Line	*/
+vector0B:	.long	_FAULT	/* Unimplemented F-Line	*/
+vector0C:	.long	_FAULT	/* Debug Interrupt	*/
+vector0D:	.long	_FAULT	/* Reserved		*/
+vector0E:	.long	_FAULT	/* Format Error		*/
+vector0F:	.long	_FAULT	/* Unitialized Int.	*/
+
+/* Reserved */
+vector10_17:
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector18:	.long	_FAULT	/* Spurious Interrupt	*/
+vector19:	.long	_FAULT	/* Autovector Level 1	*/
+vector1A:	.long	_FAULT	/* Autovector Level 2	*/
+vector1B:	.long	_FAULT	/* Autovector Level 3	*/
+vector1C:	.long	_FAULT	/* Autovector Level 4	*/
+vector1D:	.long	_FAULT	/* Autovector Level 5	*/
+vector1E:	.long	_FAULT	/* Autovector Level 6	*/
+vector1F:	.long	_FAULT	/* Autovector Level 7	*/
+
+#if !defined(CONFIG_CF_SBF)
+/* TRAP #0 - #15 */
+vector20_2F:
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+/* Reserved	*/
+vector30_3F:
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector64_127:
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector128_191:
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector192_255:
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long	_FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+#endif
+
+#if defined(CONFIG_CF_SBF)
+	/* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */
+asm_sbf_img_hdr:
+	.long	0x00000000	/* checksum, not yet implemented */
+	.long	0x00020000	/* image length */
+	.long	TEXT_BASE	/* image to be relocated at */
+
+asm_dram_init:
+	move.l	#(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
+	movec	%d0, %RAMBAR1	/* init Rambar */
+	move.l	#(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
+	clr.l %sp@-
+
+	/* Must disable global address */
+	move.l	#0xFC008000, %a1
+	move.l	#(CONFIG_SYS_CS0_BASE), (%a1)
+	move.l	#0xFC008008, %a1
+	move.l	#(CONFIG_SYS_CS0_CTRL), (%a1)
+	move.l	#0xFC008004, %a1
+	move.l	#(CONFIG_SYS_CS0_MASK), (%a1)
+
+	/*
+	 * Dram Initialization
+	 * a1, a2, and d0
+	 */
+	/* mscr sdram */
+	move.l	#0xFC0A4074, %a1
+	move.b	#(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
+	nop
+
+	/* SDRAM Chip 0 and 1 */
+	move.l	#0xFC0B8110, %a1
+	move.l	#0xFC0B8114, %a2
+
+	/* calculate the size */
+	move.l	#0x13, %d1
+	move.l	#(CONFIG_SYS_SDRAM_SIZE), %d2
+#ifdef CONFIG_SYS_SDRAM_BASE1
+	lsr.l	#1, %d2
+#endif
+
+dramsz_loop:
+	lsr.l	#1, %d2
+	add.l	#1, %d1
+	cmp.l	#1, %d2
+	bne	dramsz_loop
+
+	/* SDRAM Chip 0 and 1 */
+	move.l	#(CONFIG_SYS_SDRAM_BASE), (%a1)
+	or.l	%d1, (%a1)
+#ifdef CONFIG_SYS_SDRAM_BASE1
+	move.l	#(CONFIG_SYS_SDRAM_BASE1), (%a2)
+	or.l	%d1, (%a2)
+#endif
+	nop
+
+	/* dram cfg1 and cfg2 */
+	move.l	#0xFC0B8008, %a1
+	move.l	#(CONFIG_SYS_SDRAM_CFG1), (%a1)
+	nop
+	move.l	#0xFC0B800C, %a2
+	move.l	#(CONFIG_SYS_SDRAM_CFG2), (%a2)
+	nop
+
+	move.l	#0xFC0B8000, %a1	/* Mode */
+	move.l	#0xFC0B8004, %a2	/* Ctrl */
+
+	/* Issue PALL */
+	move.l	#(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
+	nop
+
+	/* Issue LEMR */
+	move.l	#(CONFIG_SYS_SDRAM_MODE), (%a1)
+	nop
+	move.l	#(CONFIG_SYS_SDRAM_EMOD), (%a1)
+	nop
+
+	move.l	#1000, %d0
+wait1000:
+	nop
+	subq.l	#1, %d0
+	bne	wait1000
+
+	/* Issue PALL */
+	move.l	#(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
+	nop
+
+	/* Perform two refresh cycles */
+	move.l	#(CONFIG_SYS_SDRAM_CTRL + 4), %d0
+	nop
+	move.l	%d0, (%a2)
+	move.l	%d0, (%a2)
+	nop
+
+	move.l	#(CONFIG_SYS_SDRAM_CTRL), %d0
+	and.l	#0x7FFFFFFF, %d0
+	or.l	#0x10000c00, %d0
+	move.l	%d0, (%a2)
+	nop
+
+	/*
+	 * DSPI Initialization
+	 * a0 - general, sram - 0x80008000 - 32, see M52277EVB.h
+	 * a1 - dspi status
+	 * a2 - dtfr
+	 * a3 - drfr
+	 * a4 - Dst addr
+	 */
+
+	/* Enable pins for DSPI mode - chip-selects are enabled later */
+	move.l	#0xFC0A4036, %a0
+	move.b	#0x3F, %d0
+	move.b	%d0, (%a0)
+
+	/* DSPI CS */
+#ifdef CONFIG_SYS_DSPI_CS0
+	move.b	(%a0), %d0
+	or.l	#0xC0, %d0
+	move.b	%d0, (%a0)
+#endif
+#ifdef CONFIG_SYS_DSPI_CS2
+	move.l	#0xFC0A4037, %a0
+	move.b	(%a0), %d0
+	or.l	#0x10, %d0
+	move.b	%d0, (%a0)
+#endif
+	nop
+
+	/* Configure DSPI module */
+	move.l	#0xFC05C000, %a0
+	move.l	#0x80FF0C00, (%a0)	/* Master, clear TX/RX FIFO */
+
+	move.l	#0xFC05C00C, %a0
+	move.l	#0x3E000011, (%a0)
+
+	move.l	#0xFC05C034, %a2	/* dtfr */
+	move.l	#0xFC05C03B, %a3	/* drfr */
+
+	move.l	#(ASM_SBF_IMG_HDR + 4), %a1
+	move.l	(%a1)+, %d5
+	move.l	(%a1), %a4
+
+	move.l	#(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_SBFHDR_DATA_OFFSET), %a0
+	move.l	#(CONFIG_SYS_SBFHDR_SIZE), %d4
+
+	move.l	#0xFC05C02C, %a1	/* dspi status */
+
+	/* Issue commands and address */
+	move.l	#0x8004000B, %d2	/* Fast Read Cmd */
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	move.l	#0x80040000, %d2	/* Address byte 2 */
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	move.l	#0x80040000, %d2	/* Address byte 1 */
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	move.l	#0x80040000, %d2	/* Address byte 0 */
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	move.l	#0x80040000, %d2	/* Dummy Wr and Rd */
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	/* Transfer serial boot header to sram */
+asm_dspi_rd_loop1:
+	move.l	#0x80040000, %d2
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	move.b	%d1, (%a0)		/* read, copy to dst */
+
+	add.l	#1, %a0			/* inc dst by 1 */
+	sub.l	#1, %d4			/* dec cnt by 1 */
+	bne	asm_dspi_rd_loop1
+
+	/* Transfer u-boot from serial flash to memory */
+asm_dspi_rd_loop2:
+	move.l	#0x80040000, %d2
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	move.b	%d1, (%a4)		/* read, copy to dst */
+
+	add.l	#1, %a4			/* inc dst by 1 */
+	sub.l	#1, %d5			/* dec cnt by 1 */
+	bne	asm_dspi_rd_loop2
+
+	move.l	#0x00040000, %d2	/* Terminate */
+	jsr	asm_dspi_wr_status
+	jsr	asm_dspi_rd_status
+
+	/* jump to memory and execute */
+	move.l	#(TEXT_BASE + 0x400), %a0
+	move.l	%a0, (%a1)
+	jmp	(%a0)
+
+asm_dspi_wr_status:
+	move.l	(%a1), %d0		/* status */
+	and.l	#0x0000F000, %d0
+	cmp.l	#0x00003000, %d0
+	bgt	asm_dspi_wr_status
+
+	move.l	%d2, (%a2)
+	rts
+
+asm_dspi_rd_status:
+	move.l	(%a1), %d0		/* status */
+	and.l	#0x000000F0, %d0
+	lsr.l	#4, %d0
+	cmp.l	#0, %d0
+	beq	asm_dspi_rd_status
+
+	move.b	(%a3), %d1
+	rts
+#endif			/* CONFIG_CF_SBF */
+
+	.text
+	. = 0x400
+	.globl	_start
+_start:
+	nop
+	nop
+	move.w #0x2700,%sr		/* Mask off Interrupt */
+
+	/* Set vector base register at the beginning of the Flash */
+#if defined(CONFIG_CF_SBF)
+	move.l	#TEXT_BASE, %d0
+	movec	%d0, %VBR
+#else
+	move.l	#CONFIG_SYS_FLASH_BASE, %d0
+	movec	%d0, %VBR
+
+	move.l	#(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
+	movec	%d0, %RAMBAR1
+#endif
+
+	/* invalidate and disable cache */
+	move.l	#CF_CACR_CINV, %d0	/* Invalidate cache cmd */
+	movec	%d0, %CACR		/* Invalidate cache */
+	move.l	#0, %d0
+	movec	%d0, %ACR0
+	movec	%d0, %ACR1
+
+	/* initialize general use internal ram */
+	move.l #0, %d0
+	move.l #(ICACHE_STATUS), %a1	/* icache */
+	move.l #(DCACHE_STATUS), %a2	/* icache */
+	move.l %d0, (%a1)
+	move.l %d0, (%a2)
+
+	/* set stackpointer to end of internal ram to get some stackspace for
+	   the first c-code */
+	move.l	#(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
+	clr.l %sp@-
+
+	move.l #__got_start, %a5	/* put relocation table address to a5 */
+
+	bsr cpu_init_f			/* run low-level CPU init code (from flash) */
+	bsr board_init_f		/* run low-level board init code (from flash) */
+
+	/* board_init_f() does not return */
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+	.globl	relocate_code
+relocate_code:
+	link.w %a6,#0
+	move.l 8(%a6), %sp		/* set new stack pointer */
+
+	move.l 12(%a6), %d0		/* Save copy of Global Data pointer */
+	move.l 16(%a6), %a0		/* Save copy of Destination Address */
+
+	move.l #CONFIG_SYS_MONITOR_BASE, %a1
+	move.l #__init_end, %a2
+	move.l %a0, %a3
+
+	/* copy the code to RAM */
+1:
+	move.l (%a1)+, (%a3)+
+	cmp.l  %a1,%a2
+	bgt.s	 1b
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+	move.l	%a0, %a1
+	add.l	#(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
+	jmp	(%a1)
+
+in_ram:
+
+clear_bss:
+	/*
+	 * Now clear BSS segment
+	 */
+	move.l	%a0, %a1
+	add.l	#(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
+	move.l	%a0, %d1
+	add.l	#(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
+6:
+	clr.l	(%a1)+
+	cmp.l	%a1,%d1
+	bgt.s	6b
+
+	/*
+	 * fix got table in RAM
+	 */
+	move.l	%a0, %a1
+	add.l	#(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
+	move.l	%a1,%a5			/* * fix got pointer register a5 */
+
+	move.l	%a0, %a2
+	add.l	#(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
+
+7:
+	move.l	(%a1),%d1
+	sub.l	#_start,%d1
+	add.l	%a0,%d1
+	move.l	%d1,(%a1)+
+	cmp.l	%a2, %a1
+	bne	7b
+
+	/* calculate relative jump to board_init_r in ram */
+	move.l %a0, %a1
+	add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
+
+	/* set parameters for board_init_r */
+	move.l %a0,-(%sp)		/* dest_addr */
+	move.l %d0,-(%sp)		/* gd */
+	jsr	(%a1)
+
+/*------------------------------------------------------------------------------*/
+/* exception code */
+	.globl _fault
+_fault:
+	jmp _fault
+	.globl	_exc_handler
+
+_exc_handler:
+	SAVE_ALL
+	movel	%sp,%sp@-
+	bsr exc_handler
+	addql	#4,%sp
+	RESTORE_ALL
+
+	.globl	_int_handler
+_int_handler:
+	SAVE_ALL
+	movel	%sp,%sp@-
+	bsr int_handler
+	addql	#4,%sp
+	RESTORE_ALL
+
+/*------------------------------------------------------------------------------*/
+
+	.globl	version_string
+version_string:
+	.ascii U_BOOT_VERSION
+	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
+	.ascii CONFIG_IDENT_STRING, "\0"
+	.align 4