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-rw-r--r--cpu/arm926ejs/mx25/Makefile45
-rw-r--r--cpu/arm926ejs/mx25/generic.c116
-rw-r--r--cpu/arm926ejs/mx25/gpio.c113
-rw-r--r--cpu/arm926ejs/mx25/interrupts.c121
-rw-r--r--cpu/arm926ejs/mx25/iomux.c153
-rw-r--r--cpu/arm926ejs/mx25/serial.c231
-rw-r--r--cpu/arm926ejs/start.S2
7 files changed, 780 insertions, 1 deletions
diff --git a/cpu/arm926ejs/mx25/Makefile b/cpu/arm926ejs/mx25/Makefile
new file mode 100644
index 0000000..74add9d
--- /dev/null
+++ b/cpu/arm926ejs/mx25/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2000-2006
+# 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
+
+LIB = $(obj)lib$(SOC).a
+
+COBJS = interrupts.o serial.o generic.o iomux.o gpio.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+all: $(obj).depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/cpu/arm926ejs/mx25/generic.c b/cpu/arm926ejs/mx25/generic.c
new file mode 100644
index 0000000..23b5cce
--- /dev/null
+++ b/cpu/arm926ejs/mx25/generic.c
@@ -0,0 +1,116 @@
+/*
+ * (C) Copyright 2007
+ * Sascha Hauer, Pengutronix
+ *
+ * (C) Copyright 2009 Freescale Semiconductor
+ *
+ * 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/errno.h>
+#include <asm/arch/mx25-regs.h>
+
+static u32 mx25_decode_pll(u32 reg)
+{
+ u32 mfi = (reg >> 10) & 0xf;
+ u32 mfn = reg & 0x3ff;
+ u32 mfd = (reg >> 16) & 0x3ff;
+ u32 pd = (reg >> 26) & 0xf;
+
+ u32 ref_clk = PLL_REF_CLK;
+
+ mfi = mfi <= 5 ? 5 : mfi;
+ mfd += 1;
+ pd += 1;
+
+ return ((2 * (ref_clk >> 10) * (mfi * mfd + mfn)) /
+ (mfd * pd)) << 10;
+}
+
+static u32 mx25_get_mcu_main_clk(void)
+{
+ u32 cctl = __REG(CCM_CCTL);
+ u32 ret_val = mx25_decode_pll(__REG(CCM_MPCTL));
+
+ if (cctl & CRM_CCTL_ARM_SRC) {
+ ret_val *= 3;
+ ret_val /= 4;
+ }
+
+ return ret_val;
+}
+
+static u32 mx25_get_ahb_clk(void)
+{
+ u32 cctl = __REG(CCM_CCTL);
+ u32 ahb_div = ((cctl >> CRM_CCTL_AHB_OFFSET) & 3) + 1;
+
+ return mx25_get_mcu_main_clk()/ahb_div;
+}
+
+unsigned int mx25_get_ipg_clk(void)
+{
+ return mx25_get_ahb_clk()/2;
+}
+
+void mx25_dump_clocks(void)
+{
+ u32 cpufreq = mx25_get_mcu_main_clk();
+ printf("mx25 cpu clock: %dMHz\n", cpufreq / 1000000);
+ printf("ipg clock : %dHz\n", mx25_get_ipg_clk());
+}
+
+unsigned int mxc_get_clock(enum mxc_clock clk)
+{
+ switch (clk) {
+ case MXC_ARM_CLK:
+ return mx25_get_mcu_main_clk();
+ case MXC_AHB_CLK:
+ return mx25_get_ahb_clk();
+ break;
+ case MXC_IPG_PERCLK:
+ case MXC_IPG_CLK:
+ return mx25_get_ipg_clk();
+ case MXC_UART_CLK:
+ break;
+ }
+ return -1;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+ printf("CPU: Freescale i.MX25 at %d MHz\n",
+ mx25_get_mcu_main_clk() / 1000000);
+ return 0;
+}
+/*
+ * Initializes on-chip ethernet controllers.
+ * to override, implement board_eth_init()
+ */
+int cpu_eth_init(bd_t *bis)
+{
+ int rc = -ENODEV;
+#if defined(CONFIG_MXC_FEC)
+ rc = mxc_fec_initialize(bis);
+#endif
+ return rc;
+}
+#endif
diff --git a/cpu/arm926ejs/mx25/gpio.c b/cpu/arm926ejs/mx25/gpio.c
new file mode 100644
index 0000000..560b3a4
--- /dev/null
+++ b/cpu/arm926ejs/mx25/gpio.c
@@ -0,0 +1,113 @@
+/*
+ * (c) Copyright 2009 Freescale Semiconductors
+ *
+ * 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/arch/mx25.h>
+#include <asm/arch/mx25_pins.h>
+#include <asm/arch/gpio.h>
+
+enum gpio_reg {
+ DR = 0x00,
+ GDIR = 0x04,
+ PSR = 0x08,
+ ICR1 = 0x0C,
+ ICR2 = 0x10,
+ IMR = 0x14,
+ ISR = 0x18,
+};
+
+struct gpio_port_addr {
+ int num;
+ int base;
+};
+
+struct gpio_port_addr gpio_port[4] = {
+ {0, GPIO1_BASE},
+ {1, GPIO2_BASE},
+ {2, GPIO3_BASE},
+ {3, GPIO4_BASE}
+ };
+
+/*
+ * Set a GPIO pin's direction
+ * @param port pointer to a gpio_port
+ * @param index gpio pin index value (0~31)
+ * @param is_input 0 for output; non-zero for input
+ */
+static void _set_gpio_direction(u32 port, u32 index, int is_input)
+{
+ u32 reg = gpio_port[port].base + GDIR;
+ u32 l;
+
+ l = __REG(reg);
+ if (is_input)
+ l &= ~(1 << index);
+ else
+ l |= 1 << index;
+ __REG(reg) = l;
+}
+
+
+/*!
+ * Exported function to set a GPIO pin's direction
+ * @param pin a name defined by \b iomux_pin_name_t
+ * @param is_input 1 (or non-zero) for input; 0 for output
+ */
+void mxc_set_gpio_direction(iomux_pin_name_t pin, int is_input)
+{
+ u32 port;
+ u32 gpio = IOMUX_TO_GPIO(pin);
+
+ port = GPIO_TO_PORT(gpio);
+ _set_gpio_direction(port, GPIO_TO_INDEX(gpio), is_input);
+}
+
+/*
+ * Set a GPIO pin's data output
+ * @param port number of gpio port
+ * @param index gpio pin index value (0~31)
+ * @param data value to be set (only 0 or 1 is valid)
+ */
+static void _set_gpio_dataout(u32 port, u32 index, u32 data)
+{
+ u32 reg = gpio_port[port].base + DR;
+ u32 l = 0;
+
+ l = (__REG(reg) & (~(1 << index))) | (data << index);
+ __REG(reg) = l;
+}
+
+/*!
+ * Exported function to set a GPIO pin's data output
+ * @param pin a name defined by \b iomux_pin_name_t
+ * @param data value to be set (only 0 or 1 is valid)
+ */
+
+void mxc_set_gpio_dataout(iomux_pin_name_t pin, u32 data)
+{
+ u32 port;
+ u32 gpio = IOMUX_TO_GPIO(pin);
+
+ port = GPIO_TO_PORT(gpio);
+ _set_gpio_dataout(port, GPIO_TO_INDEX(gpio), (data == 0) ? 0 : 1);
+}
+
diff --git a/cpu/arm926ejs/mx25/interrupts.c b/cpu/arm926ejs/mx25/interrupts.c
new file mode 100644
index 0000000..cbd5d09
--- /dev/null
+++ b/cpu/arm926ejs/mx25/interrupts.c
@@ -0,0 +1,121 @@
+/*
+ * (C) Copyright 2007
+ * Sascha Hauer, Pengutronix
+ *
+ * (C) Copyright 2009 Freescale Semiconductor
+ *
+ * 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/arch/mx25-regs.h>
+
+#define TIMER_BASE 0x53f90000 /* General purpose timer 1 */
+
+/* General purpose timers registers */
+#define GPTCR __REG(TIMER_BASE) /* Control register */
+#define GPTPR __REG(TIMER_BASE + 0x4) /* Prescaler register */
+#define GPTSR __REG(TIMER_BASE + 0x8) /* Status register */
+#define GPTCNT __REG(TIMER_BASE + 0x24) /* Counter register */
+
+/* General purpose timers bitfields */
+#define GPTCR_SWR (1<<15) /* Software reset */
+#define GPTCR_FRR (1<<9) /* Freerun / restart */
+#define GPTCR_CLKSOURCE_32 (4<<6) /* Clock source */
+#define GPTCR_TEN (1) /* Timer enable */
+
+static ulong timestamp;
+static ulong lastinc;
+
+/* nothing really to do with interrupts, just starts up a counter. */
+int interrupt_init(void)
+{
+ int i;
+
+ /* setup GP Timer 1 */
+ GPTCR = GPTCR_SWR;
+ for (i = 0; i < 100; i++)
+ GPTCR = 0; /* We have no udelay by now */
+ GPTPR = 0; /* 32Khz */
+ GPTCR |= GPTCR_CLKSOURCE_32 | GPTCR_TEN; /* Freerun Mode, PERCLK1 in */
+
+ return 0;
+}
+
+void reset_timer_masked(void)
+{
+ /* reset time */
+ lastinc = GPTCNT; /* capture current incrementer value time */
+ timestamp = 0; /* start "advancing" time stamp from 0 */
+}
+
+void reset_timer(void)
+{
+ reset_timer_masked();
+}
+
+ulong get_timer_masked(void)
+{
+ ulong now = GPTCNT; /* current tick value */
+
+ if (now >= lastinc) /* normal mode (non roll) */
+ /* move stamp forward with absolut diff ticks */
+ timestamp += (now - lastinc);
+ else /* we have rollover of incrementer */
+ timestamp += (0xFFFFFFFF - lastinc) + now;
+ lastinc = now;
+ return timestamp;
+}
+
+ulong get_timer(ulong base)
+{
+ return get_timer_masked() - base;
+}
+
+void set_timer(ulong t)
+{
+}
+
+/* delay x useconds AND perserve advance timstamp value */
+void udelay(unsigned long usec)
+{
+ ulong tmo, tmp;
+
+ if (usec >= 1000) { /* if "big" number, spread normalize to secs */
+ tmo = usec / 1000; /* normalize usec to ticks per sec */
+ tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait */
+ tmo /= 1000; /* finish normalize. */
+ } else { /* don't kill prior to HZ multiply */
+ tmo = usec * CONFIG_SYS_HZ;
+ tmo /= (1000*1000);
+ }
+
+ tmp = get_timer(0); /* get current timestamp */
+ if ((tmo + tmp + 1) < tmp) /* if overflow time stamp */
+ reset_timer_masked(); /* reset "advancing" timestamp to 0 */
+ else
+ tmo += tmp; /* else, set stamp wake up time */
+ while (get_timer_masked() < tmo)/* loop till event */
+ /*NOP*/;
+}
+
+void reset_cpu(ulong addr)
+{
+ __REG16(WDOG_BASE) = 4;
+}
diff --git a/cpu/arm926ejs/mx25/iomux.c b/cpu/arm926ejs/mx25/iomux.c
new file mode 100644
index 0000000..c0805d3
--- /dev/null
+++ b/cpu/arm926ejs/mx25/iomux.c
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/*!
+ * @defgroup GPIO_MX25 Board GPIO and Muxing Setup
+ * @ingroup MSL_MX25
+ */
+/*!
+ * @file mach-mx25/iomux.c
+ *
+ * @brief I/O Muxing control functions
+ *
+ * @ingroup GPIO_MX25
+ */
+
+#include <common.h>
+#include <asm/arch/mx25.h>
+#include <asm/arch/mx25_pins.h>
+#include <asm/arch/iomux.h>
+
+/*!
+ * IOMUX register (base) addresses
+ */
+enum iomux_reg_addr {
+ IOMUXGPR = IOMUXC_BASE,
+ /*!< General purpose */
+ IOMUXSW_MUX_CTL = IOMUXC_BASE + 0x008,
+ /*!< MUX control */
+ IOMUXSW_MUX_END = IOMUXC_BASE + 0x228,
+ /*!< last MUX control register */
+ IOMUXSW_PAD_CTL = IOMUXC_BASE + 0x22C,
+ /*!< Pad control */
+ IOMUXSW_PAD_END = IOMUXC_BASE + 0x414,
+ /*!< last Pad control register */
+ IOMUXSW_INPUT_CTL = IOMUXC_BASE + 0x460,
+ /*!< input select register */
+ IOMUXSW_INPUT_END = IOMUXC_BASE + 0x580,
+ /*!< last input select register */
+};
+
+#define MUX_PIN_NUM_MAX \
+ (((IOMUXSW_MUX_END - IOMUXSW_MUX_CTL) >> 2) + 1)
+#define MUX_INPUT_NUM_MUX \
+ (((IOMUXSW_INPUT_END - IOMUXSW_INPUT_CTL) >> 2) + 1)
+
+#define PIN_TO_IOMUX_INDEX(pin) (PIN_TO_IOMUX_MUX(pin) >> 2)
+
+#define MUX_USED 0x80
+
+/*!
+ * This function is used to configure a pin through the IOMUX module.
+ * FIXED ME: for backward compatible. Will be static function!
+ * @param pin a pin number as defined in \b #iomux_pin_name_t
+ * @param cfg an output function as defined in \b #iomux_pin_cfg_t
+ *
+ * @return 0 if successful; Non-zero otherwise
+ */
+static int iomux_config_mux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
+{
+ u32 mux_reg = PIN_TO_IOMUX_MUX(pin);
+
+ if (mux_reg != NON_MUX_I) {
+ mux_reg += IOMUXGPR;
+ __REG(mux_reg) = cfg;
+ }
+
+ return 0;
+}
+
+/*!
+ * Request ownership for an IO pin. This function has to be the first one
+ * being called before that pin is used. The caller has to check the
+ * return value to make sure it returns 0.
+ *
+ * @param pin a name defined by \b iomux_pin_name_t
+ * @param cfg an input function as defined in \b #iomux_pin_cfg_t
+ *
+ * @return 0 if successful; Non-zero otherwise
+ */
+int mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
+{
+ int ret = iomux_config_mux(pin, cfg);
+ return ret;
+}
+
+/*!
+ * Release ownership for an IO pin
+ *
+ * @param pin a name defined by \b iomux_pin_name_t
+ * @param cfg an input function as defined in \b #iomux_pin_cfg_t
+ */
+void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg)
+{
+}
+
+/*!
+ * This function configures the pad value for a IOMUX pin.
+ *
+ * @param pin a pin number as defined in \b #iomux_pin_name_t
+ * @param config the ORed value of elements defined in \b #iomux_pad_config_t
+ */
+void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config)
+{
+ u32 pad_reg = IOMUXGPR + PIN_TO_IOMUX_PAD(pin);
+
+ __REG(pad_reg) = config;
+}
+
+/*!
+ * This function enables/disables the general purpose function for a particular
+ * signal.
+ *
+ * @param gp one signal as defined in \b #iomux_gp_func_t
+ * @param en \b #true to enable; \b #false to disable
+ */
+void mxc_iomux_set_gpr(iomux_gp_func_t gp, int en)
+{
+ u32 l;
+
+ l = __REG(IOMUXGPR);
+ if (en)
+ l |= gp;
+ else
+ l &= ~gp;
+
+ __REG(IOMUXGPR) = l;
+}
+
+/*!
+ * This function configures input path.
+ *
+ * @param input index of input select register as defined in \b
+ * #iomux_input_select_t
+ * @param config the binary value of elements defined in \b
+ * #iomux_input_config_t
+ */
+void mxc_iomux_set_input(iomux_input_select_t input, u32 config)
+{
+ u32 reg = IOMUXSW_INPUT_CTL + (input << 2);
+
+ __REG(reg) = config;
+}
+
diff --git a/cpu/arm926ejs/mx25/serial.c b/cpu/arm926ejs/mx25/serial.c
new file mode 100644
index 0000000..17a08c3
--- /dev/null
+++ b/cpu/arm926ejs/mx25/serial.c
@@ -0,0 +1,231 @@
+/*
+ * (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor
+ *
+ * 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>
+
+#if defined CONFIG_MX25_UART
+
+#include <asm/arch/mx25.h>
+
+#define __REG(x) (*((volatile u32 *)(x)))
+
+#ifdef CONFIG_MX25_UART1
+#define UART_PHYS 0x43f90000
+#else
+#error "define CONFIG_MX25_UARTx to use the mx25 UART driver"
+#endif
+
+/* Register definitions */
+#define URXD 0x0 /* Receiver Register */
+#define UTXD 0x40 /* Transmitter Register */
+#define UCR1 0x80 /* Control Register 1 */
+#define UCR2 0x84 /* Control Register 2 */
+#define UCR3 0x88 /* Control Register 3 */
+#define UCR4 0x8c /* Control Register 4 */
+#define UFCR 0x90 /* FIFO Control Register */
+#define USR1 0x94 /* Status Register 1 */
+#define USR2 0x98 /* Status Register 2 */
+#define UESC 0x9c /* Escape Character Register */
+#define UTIM 0xa0 /* Escape Timer Register */
+#define UBIR 0xa4 /* BRM Incremental Register */
+#define UBMR 0xa8 /* BRM Modulator Register */
+#define UBRC 0xac /* Baud Rate Count Register */
+#define UTS 0xb4 /* UART Test Register (mx25) */
+
+/* UART Control Register Bit Fields.*/
+#define URXD_CHARRDY (1<<15)
+#define URXD_ERR (1<<14)
+#define URXD_OVRRUN (1<<13)
+#define URXD_FRMERR (1<<12)
+#define URXD_BRK (1<<11)
+#define URXD_PRERR (1<<10)
+#define URXD_RX_DATA (0xFF)
+#define UCR1_ADEN (1<<15) /* Auto dectect interrupt */
+#define UCR1_ADBR (1<<14) /* Auto detect baud rate */
+#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */
+#define UCR1_IDEN (1<<12) /* Idle condition interrupt */
+#define UCR1_RRDYEN (1<<9) /* Recv ready interrupt enable */
+#define UCR1_RDMAEN (1<<8) /* Recv ready DMA enable */
+#define UCR1_IREN (1<<7) /* Infrared interface enable */
+#define UCR1_TXMPTYEN (1<<6) /* Transimitter empty interrupt enable */
+#define UCR1_RTSDEN (1<<5) /* RTS delta interrupt enable */
+#define UCR1_SNDBRK (1<<4) /* Send break */
+#define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */
+#define UCR1_UARTCLKEN (1<<2) /* UART clock enabled */
+#define UCR1_DOZE (1<<1) /* Doze */
+#define UCR1_UARTEN (1<<0) /* UART enabled */
+#define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */
+#define UCR2_IRTS (1<<14) /* Ignore RTS pin */
+#define UCR2_CTSC (1<<13) /* CTS pin control */
+#define UCR2_CTS (1<<12) /* Clear to send */
+#define UCR2_ESCEN (1<<11) /* Escape enable */
+#define UCR2_PREN (1<<8) /* Parity enable */
+#define UCR2_PROE (1<<7) /* Parity odd/even */
+#define UCR2_STPB (1<<6) /* Stop */
+#define UCR2_WS (1<<5) /* Word size */
+#define UCR2_RTSEN (1<<4) /* Request to send interrupt enable */
+#define UCR2_TXEN (1<<2) /* Transmitter enabled */
+#define UCR2_RXEN (1<<1) /* Receiver enabled */
+#define UCR2_SRST (1<<0) /* SW reset */
+#define UCR3_DTREN (1<<13) /* DTR interrupt enable */
+#define UCR3_PARERREN (1<<12) /* Parity enable */
+#define UCR3_FRAERREN (1<<11) /* Frame error interrupt enable */
+#define UCR3_DSR (1<<10) /* Data set ready */
+#define UCR3_DCD (1<<9) /* Data carrier detect */
+#define UCR3_RI (1<<8) /* Ring indicator */
+#define UCR3_TIMEOUTEN (1<<7) /* Timeout interrupt enable */
+#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */
+#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */
+#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */
+#define UCR3_REF25 (1<<3) /* Ref freq 25 MHz */
+#define UCR3_REF30 (1<<2) /* Ref Freq 30 MHz */
+#define UCR3_INVT (1<<1) /* Inverted Infrared transmission */
+#define UCR3_BPEN (1<<0) /* Preset registers enable */
+#define UCR4_CTSTL_32 (32<<10)/* CTS trigger level (32 chars) */
+#define UCR4_INVR (1<<9) /* Inverted infrared reception */
+#define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */
+#define UCR4_WKEN (1<<7) /* Wake interrupt enable */
+#define UCR4_REF16 (1<<6) /* Ref freq 16 MHz */
+#define UCR4_IRSC (1<<5) /* IR special case */
+#define UCR4_TCEN (1<<3) /* Transmit complete interrupt enable */
+#define UCR4_BKEN (1<<2) /* Break condition interrupt enable */
+#define UCR4_OREN (1<<1) /* Receiver overrun interrupt enable */
+#define UCR4_DREN (1<<0) /* Recv data ready interrupt enable */
+#define UFCR_RXTL_SHF 0 /* Receiver trigger level shift */
+#define UFCR_RFDIV (7<<7) /* Reference freq divider mask */
+#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */
+#define USR1_PARITYERR (1<<15) /* Parity error interrupt flag */
+#define USR1_RTSS (1<<14) /* RTS pin status */
+#define USR1_TRDY (1<<13) /* Transmitter ready interrupt/dma flag */
+#define USR1_RTSD (1<<12) /* RTS delta */
+#define USR1_ESCF (1<<11) /* Escape seq interrupt flag */
+#define USR1_FRAMERR (1<<10) /* Frame error interrupt flag */
+#define USR1_RRDY (1<<9) /* Receiver ready interrupt/dma flag */
+#define USR1_TIMEOUT (1<<7) /* Receive timeout interrupt status */
+#define USR1_RXDS (1<<6) /* Receiver idle interrupt flag */
+#define USR1_AIRINT (1<<5) /* Async IR wake interrupt flag */
+#define USR1_AWAKE (1<<4) /* Aysnc wake interrupt flag */
+#define USR2_ADET (1<<15) /* Auto baud rate detect complete */
+#define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */
+#define USR2_DTRF (1<<13) /* DTR edge interrupt flag */
+#define USR2_IDLE (1<<12) /* Idle condition */
+#define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */
+#define USR2_WAKE (1<<7) /* Wake */
+#define USR2_RTSF (1<<4) /* RTS edge interrupt flag */
+#define USR2_TXDC (1<<3) /* Transmitter complete */
+#define USR2_BRCD (1<<2) /* Break condition */
+#define USR2_ORE (1<<1) /* Overrun error */
+#define USR2_RDR (1<<0) /* Recv data ready */
+#define UTS_FRCPERR (1<<13) /* Force parity error */
+#define UTS_LOOP (1<<12) /* Loop tx and rx */
+#define UTS_TXEMPTY (1<<6) /* TxFIFO empty */
+#define UTS_RXEMPTY (1<<5) /* RxFIFO empty */
+#define UTS_TXFULL (1<<4) /* TxFIFO full */
+#define UTS_RXFULL (1<<3) /* RxFIFO full */
+#define UTS_SOFTRST (1<<0) /* Software reset */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void serial_setbrg(void)
+{
+ u32 clk = mx25_get_ipg_clk();
+
+ if (!gd->baudrate)
+ gd->baudrate = CONFIG_BAUDRATE;
+
+ __REG(UART_PHYS + UFCR) = 4 << 7; /* divide input clock by 2 */
+ __REG(UART_PHYS + UBIR) = 0xf;
+ __REG(UART_PHYS + UBMR) = clk / (2 * gd->baudrate);
+
+}
+
+int serial_getc(void)
+{
+ while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY)
+ ;
+
+ /* mask out status from upper word */
+ return (__REG(UART_PHYS + URXD) & URXD_RX_DATA)
+ ;
+}
+
+void serial_putc(const char c)
+{
+ __REG(UART_PHYS + UTXD) = c;
+
+ /* wait for transmitter to be ready */
+ while (!(__REG(UART_PHYS + UTS) & UTS_TXEMPTY))
+ ;
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc('\r');
+}
+
+/*
+ * Test whether a character is in the RX buffer
+ */
+int serial_tstc(void)
+{
+ /* If receive fifo is empty, return false */
+ if (__REG(UART_PHYS + UTS) & UTS_RXEMPTY)
+ return 0;
+ return 1;
+}
+
+void serial_puts(const char *s)
+{
+ while (*s)
+ serial_putc(*s++);
+}
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int serial_init(void)
+{
+ __REG(UART_PHYS + UCR1) = 0x0;
+ __REG(UART_PHYS + UCR2) = 0x0;
+
+ while (!(__REG(UART_PHYS + UCR2) & UCR2_SRST))
+ ;
+
+ __REG(UART_PHYS + UCR3) = 0x0704;
+ __REG(UART_PHYS + UCR4) = 0x8000;
+ __REG(UART_PHYS + UESC) = 0x002b;
+ __REG(UART_PHYS + UTIM) = 0x0;
+
+ __REG(UART_PHYS + UTS) = 0x0;
+
+ serial_setbrg();
+
+ __REG(UART_PHYS + UCR2) = UCR2_WS | UCR2_IRTS | UCR2_RXEN |
+ UCR2_TXEN | UCR2_SRST;
+
+ __REG(UART_PHYS + UCR1) = UCR1_UARTEN;
+
+ return 0;
+}
+
+
+#endif /* CONFIG_MX25 */
diff --git a/cpu/arm926ejs/start.S b/cpu/arm926ejs/start.S
index 8043322..31bdcf0 100644
--- a/cpu/arm926ejs/start.S
+++ b/cpu/arm926ejs/start.S
@@ -126,7 +126,7 @@ FIQ_STACK_START:
/*
* the actual reset code
*/
-
+.globl reset
reset:
/*
* set the cpu to SVC32 mode
generated by cgit v1.1 at 2024-11-25 03:59:08 +0000