From 950a392464e616b4590bc4501be46e2d7d162dea Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Fri, 11 Apr 2008 15:11:26 +0200 Subject: Revert merge of git://www.denx.de/git/u-boot-arm, commit 62479b18: Reverting became necessary after it turned out that the patches in the u-boot-arm repo were modified, and in some cases corrupted. This reverts the following commits: 066bebd6353e33af3adefc3404560871699e9961 7a837b7310166ae8fc8b8d66d7ef01b60a80f9d6 c88ae20580b2b01487b4cdcc8b2a113f551aee36 a147e56f03871bba4f05058d5e04ce7deb010b04 d6674e0e2a6a1f033945f78838566210d3f28c95 8c8463cce44d849e37744749b32d38e1dfb12e50 c98b47ad24b2d91f41c09a3d62d7f70ad84f4b7d 8bf69d81782619187933a605f1a95ee1d069478d 8c16cb0d3b971f46fbe77c072664c0f2dcd4471d a574a73852a527779234e73e17e7597fd8128882 1377b5583a48021d983e1fd565f7d40c89e84d63 1704dc20917b4f71e373e2c888497ee666d40380 Signed-off-by: Wolfgang Denk --- cpu/arm1136/Makefile | 2 +- cpu/arm1136/cpu.c | 11 +- cpu/arm1136/interrupts.c | 167 ++++++++++++++++++++++++ cpu/arm1136/mx31/Makefile | 44 ------- cpu/arm1136/mx31/generic.c | 99 --------------- cpu/arm1136/mx31/interrupts.c | 113 ----------------- cpu/arm1136/mx31/serial.c | 230 ---------------------------------- cpu/arm1136/omap24xx/Makefile | 46 ------- cpu/arm1136/omap24xx/interrupts.c | 180 -------------------------- cpu/arm1136/omap24xx/start.S | 42 ------- cpu/arm1136/start.S | 21 ++++ cpu/arm926ejs/davinci/lowlevel_init.S | 79 +++++------- cpu/arm926ejs/davinci/nand.c | 41 +++++- cpu/arm926ejs/davinci/timer.c | 69 ++++++---- 14 files changed, 307 insertions(+), 837 deletions(-) create mode 100644 cpu/arm1136/interrupts.c delete mode 100644 cpu/arm1136/mx31/Makefile delete mode 100644 cpu/arm1136/mx31/generic.c delete mode 100644 cpu/arm1136/mx31/interrupts.c delete mode 100644 cpu/arm1136/mx31/serial.c delete mode 100644 cpu/arm1136/omap24xx/Makefile delete mode 100755 cpu/arm1136/omap24xx/interrupts.c delete mode 100644 cpu/arm1136/omap24xx/start.S (limited to 'cpu') diff --git a/cpu/arm1136/Makefile b/cpu/arm1136/Makefile index 7701b03..d5ac7d3 100644 --- a/cpu/arm1136/Makefile +++ b/cpu/arm1136/Makefile @@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(CPU).a START = start.o -COBJS = cpu.o +COBJS = interrupts.o cpu.o SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS)) diff --git a/cpu/arm1136/cpu.c b/cpu/arm1136/cpu.c index 90e9553..fa78eaa 100644 --- a/cpu/arm1136/cpu.c +++ b/cpu/arm1136/cpu.c @@ -33,6 +33,9 @@ #include #include +#if !defined(CONFIG_INTEGRATOR) && ! defined(CONFIG_ARCH_CINTEGRATOR) +#include +#endif #ifdef CONFIG_USE_IRQ DECLARE_GLOBAL_DATA_PTR; @@ -44,10 +47,10 @@ static unsigned long read_p15_c1 (void) unsigned long value; __asm__ __volatile__( - "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n" - : "=r" (value) - : - : "memory"); + "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n" + : "=r" (value) + : + : "memory"); return value; } diff --git a/cpu/arm1136/interrupts.c b/cpu/arm1136/interrupts.c new file mode 100644 index 0000000..491c902 --- /dev/null +++ b/cpu/arm1136/interrupts.c @@ -0,0 +1,167 @@ +/* + * (C) Copyright 2004 + * Texas Instruments + * Richard Woodruff + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * Alex Zuepke + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * 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 +#include + +#if !defined(CONFIG_INTEGRATOR) && ! defined(CONFIG_ARCH_CINTEGRATOR) +# include +#endif + +#define TIMER_LOAD_VAL 0 + +/* macro to read the 32 bit timer */ +#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+TCRR)) + +#if defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_CINTEGRATOR) +/* Use the IntegratorCP function from board/integratorcp.c */ +#else + +static ulong timestamp; +static ulong lastinc; + +/* nothing really to do with interrupts, just starts up a counter. */ +int interrupt_init (void) +{ + int32_t val; + + /* Start the counter ticking up */ + *((int32_t *) (CFG_TIMERBASE + TLDR)) = TIMER_LOAD_VAL; /* reload value on overflow*/ + val = (CFG_PVT << 2) | BIT5 | BIT1 | BIT0; /* mask to enable timer*/ + *((int32_t *) (CFG_TIMERBASE + TCLR)) = val; /* start timer */ + + reset_timer_masked(); /* init the timestamp and lastinc value */ + + return(0); +} +/* + * timer without interrupts + */ +void reset_timer (void) +{ + reset_timer_masked (); +} + +ulong get_timer (ulong base) +{ + return get_timer_masked () - base; +} + +void set_timer (ulong t) +{ + timestamp = t; +} + +/* delay x useconds AND perserve advance timstamp value */ +void udelay (unsigned long usec) +{ + ulong tmo, tmp; + + if (usec >= 1000) { /* if "big" number, spread normalization to seconds */ + tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ + tmo *= CFG_HZ; /* find number of "ticks" to wait to achieve target */ + tmo /= 1000; /* finish normalize. */ + } else { /* else small number, don't kill it prior to HZ multiply */ + tmo = usec * CFG_HZ; + tmo /= (1000*1000); + } + + tmp = get_timer (0); /* get current timestamp */ + if ( (tmo + tmp + 1) < tmp )/* if setting this forward will roll time stamp */ + reset_timer_masked (); /* reset "advancing" timestamp to 0, set lastinc value */ + else + tmo += tmp; /* else, set advancing stamp wake up time */ + while (get_timer_masked () < tmo)/* loop till event */ + /*NOP*/; +} + +void reset_timer_masked (void) +{ + /* reset time */ + lastinc = READ_TIMER; /* capture current incrementer value time */ + timestamp = 0; /* start "advancing" time stamp from 0 */ +} + +ulong get_timer_masked (void) +{ + ulong now = READ_TIMER; /* current tick value */ + + if (now >= lastinc) /* normal mode (non roll) */ + timestamp += (now - lastinc); /* move stamp fordward with absoulte diff ticks */ + else /* we have rollover of incrementer */ + timestamp += (0xFFFFFFFF - lastinc) + now; + lastinc = now; + return timestamp; +} + +/* waits specified delay value and resets timestamp */ +void udelay_masked (unsigned long usec) +{ + ulong tmo; + ulong endtime; + signed long diff; + + if (usec >= 1000) { /* if "big" number, spread normalization to seconds */ + tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ + tmo *= CFG_HZ; /* find number of "ticks" to wait to achieve target */ + tmo /= 1000; /* finish normalize. */ + } else { /* else small number, don't kill it prior to HZ multiply */ + tmo = usec * CFG_HZ; + tmo /= (1000*1000); + } + endtime = get_timer_masked () + tmo; + + do { + ulong now = get_timer_masked (); + diff = endtime - now; + } while (diff >= 0); +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On ARM it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On ARM it returns the number of timer ticks per second. + */ +ulong get_tbclk (void) +{ + ulong tbclk; + tbclk = CFG_HZ; + return tbclk; +} +#endif /* !Integrator/CP */ diff --git a/cpu/arm1136/mx31/Makefile b/cpu/arm1136/mx31/Makefile deleted file mode 100644 index 1fc8eea..0000000 --- a/cpu/arm1136/mx31/Makefile +++ /dev/null @@ -1,44 +0,0 @@ -# -# (C) Copyright 2000-2008 -# 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 Foundatio; 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 - -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/arm1136/mx31/generic.c b/cpu/arm1136/mx31/generic.c deleted file mode 100644 index 297d616..0000000 --- a/cpu/arm1136/mx31/generic.c +++ /dev/null @@ -1,99 +0,0 @@ -/* - * (C) Copyright 2007 - * Sascha Hauer, Pengutronix - * - * 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 -#include - -static u32 mx31_decode_pll(u32 reg, u32 infreq) -{ - u32 mfi = (reg >> 10) & 0xf; - u32 mfn = reg & 0x3f; - u32 mfd = (reg >> 16) & 0x3f; - u32 pd = (reg >> 26) & 0xf; - - mfi = mfi <= 5 ? 5 : mfi; - mfd += 1; - pd += 1; - - return ((2 * (infreq >> 10) * (mfi * mfd + mfn)) / - (mfd * pd)) << 10; -} - -u32 mx31_get_mpl_dpdgck_clk(void) -{ - u32 infreq; - - if ((__REG(CCM_CCMR) & CCMR_PRCS_MASK) == CCMR_FPM) - infreq = CONFIG_MX31_CLK32 * 1024; - else - infreq = CONFIG_MX31_HCLK_FREQ; - - return mx31_decode_pll(__REG(CCM_MPCTL), infreq); } - -u32 mx31_get_mcu_main_clk(void) -{ - /* For now we assume mpl_dpdgck_clk == mcu_main_clk - * which should be correct for most boards - */ - return mx31_get_mpl_dpdgck_clk(); -} - -u32 mx31_get_ipg_clk(void) -{ - u32 freq = mx31_get_mcu_main_clk(); - u32 pdr0 = __REG(CCM_PDR0); - - freq /= ((pdr0 >> 3) & 0x7) + 1; - freq /= ((pdr0 >> 6) & 0x3) + 1; - - return freq; -} - -void mx31_dump_clocks(void) -{ - u32 cpufreq = mx31_get_mcu_main_clk(); - printf("mx31 cpu clock: %dMHz\n", cpufreq / 1000000); - printf("ipg clock : %dHz\n", mx31_get_ipg_clk()); -} - -void mx31_gpio_mux(unsigned long mode) -{ - unsigned long reg, shift, tmp; - - reg = IOMUXC_BASE + (mode & 0xfc); - shift = (~mode & 0x3) * 8; - - tmp = __REG(reg); - tmp &= ~(0xff << shift); - tmp |= ((mode >> 8) & 0xff) << shift; - __REG(reg) = tmp; -} - -#if defined(CONFIG_DISPLAY_CPUINFO) -int print_cpuinfo(void) -{ - printf("CPU: Freescale i.MX31 at %d MHz\n", - mx31_get_mcu_main_clk() / 1000000); - return 0; -} -#endif diff --git a/cpu/arm1136/mx31/interrupts.c b/cpu/arm1136/mx31/interrupts.c deleted file mode 100644 index 189f601..0000000 --- a/cpu/arm1136/mx31/interrupts.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * (C) Copyright 2007 - * Sascha Hauer, Pengutronix - * - * 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 -#include - -#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 */ - -/* - * 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 */ - /* Freerun Mode, PERCLK1 input */ - GPTCR |= GPTCR_CLKSOURCE_32 | GPTCR_TEN; - - return 0; -} - -void reset_timer_masked(void) -{ - GPTCR = 0; - /* Freerun Mode, PERCLK1 input*/ - GPTCR = GPTCR_CLKSOURCE_32 | GPTCR_TEN; -} - -ulong get_timer_masked(void) -{ - ulong val = GPTCNT; - return val; -} - -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) { - /* "big" number, spread normalization to seconds */ - /* start to normalize for usec to ticks per sec */ - tmo = usec / 1000; - /* find number of "ticks" to wait to achieve target */ - tmo *= CFG_HZ; - tmo /= 1000; /* finish normalize. */ - } else { - /* else small number, don't kill it prior to HZ multiply */ - tmo = usec * CFG_HZ; - tmo /= (1000*1000); - } - - tmp = get_timer(0); /* get current timestamp */ - if ((tmo + tmp + 1) < tmp) - /* setting this forward will roll time stamp */ - /* reset "advancing" timestamp to 0, set lastinc value */ - reset_timer_masked(); - else - /* else, set advancing stamp wake up time */ - tmo += tmp; - while (get_timer_masked() < tmo)/* loop till event */ - /*NOP*/; -} - -void reset_cpu(ulong addr) -{ - __REG16(WDOG_BASE) = 4; -} diff --git a/cpu/arm1136/mx31/serial.c b/cpu/arm1136/mx31/serial.c deleted file mode 100644 index f7e1b3b..0000000 --- a/cpu/arm1136/mx31/serial.c +++ /dev/null @@ -1,230 +0,0 @@ -/* - * (c) 2007 Sascha Hauer - * - * 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 - -#if defined CONFIG_MX31_UART - -#include - -#define __REG(x) (*((volatile u32 *)(x))) - -#ifdef CFG_MX31_UART1 -#define UART_PHYS 0x43f90000 -#elif defined(CFG_MX31_UART2) -#define UART_PHYS 0x43f94000 -#elif defined(CFG_MX31_UART3) -#define UART_PHYS 0x5000c000 -#elif defined(CFG_MX31_UART4) -#define UART_PHYS 0x43fb0000 -#elif defined(CFG_MX31_UART5) -#define UART_PHYS 0x43fb4000 -#else -#error "define CFG_MX31_UARTx to use the mx31 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 (mx31) */ - -/* 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 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 = mx31_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); - return __REG(UART_PHYS + URXD); -} - -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_MX31 */ diff --git a/cpu/arm1136/omap24xx/Makefile b/cpu/arm1136/omap24xx/Makefile deleted file mode 100644 index 39b0a82..0000000 --- a/cpu/arm1136/omap24xx/Makefile +++ /dev/null @@ -1,46 +0,0 @@ -# -# (C) Copyright 2000-2008 -# 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 Foundatio; 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 -SOBJS = start.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/arm1136/omap24xx/interrupts.c b/cpu/arm1136/omap24xx/interrupts.c deleted file mode 100755 index 8503b24..0000000 --- a/cpu/arm1136/omap24xx/interrupts.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * (C) Copyright 2004 - * Texas Instruments - * Richard Woodruff - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH - * Marius Groeger - * Alex Zuepke - * - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, - * - * 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 -#include -#include - -#define TIMER_LOAD_VAL 0 - -/* macro to read the 32 bit timer */ -#define READ_TIMER (*((volatile ulong*)(CFG_TIMERBASE+TCRR))) - -static ulong timestamp; -static ulong lastinc; - -/* - * nothing really to do with interrupts, just starts up a counter. - */ -int interrupt_init(void) -{ - int32_t val; - - /* Start the counter ticking up */ - /* reload value on overflow*/ - *((int32_t *) (CFG_TIMERBASE + TLDR)) = TIMER_LOAD_VAL; - /* mask to enable timer*/ - val = (CFG_PVT << 2) | BIT5 | BIT1 | BIT0; - *((int32_t *) (CFG_TIMERBASE + TCLR)) = val; /* start timer */ - - reset_timer_masked(); /* init the timestamp and lastinc value */ - - return(0); -} -/* - * timer without interrupts - */ -void reset_timer(void) -{ - reset_timer_masked(); -} - -ulong get_timer(ulong base) -{ - return get_timer_masked() - base; -} - -void set_timer(ulong t) -{ - timestamp = t; -} - -/* delay x useconds AND perserve advance timstamp value */ -void udelay(unsigned long usec) -{ - ulong tmo, tmp; - - /* if "big" number, spread normalization to seconds */ - if (usec >= 1000) { - /* start to normalize for usec to ticks per sec */ - tmo = usec / 1000; - /* find number of "ticks" to wait to achieve target */ - tmo *= CFG_HZ; - /* finish normalize. */ - tmo /= 1000; - } else { - /* else small number, don't kill it prior to HZ multiply */ - tmo = usec * CFG_HZ; - tmo /= (1000*1000); - } - /* get current timestamp */ - tmp = get_timer(0); - if ((tmo + tmp + 1) < tmp) - /* setting this forward will roll time stamp */ - /* reset "advancing" timestamp to 0, set lastinc value */ - reset_timer_masked(); - else - /* else, set advancing stamp wake up time */ - tmo += tmp; - while (get_timer_masked() < tmo)/* loop till event */ - /*NOP*/; -} - -void reset_timer_masked(void) -{ - /* reset time */ - /* capture current incrementer value time */ - lastinc = READ_TIMER; - /* start "advancing" time stamp from 0 */ - timestamp = 0; -} - -ulong get_timer_masked(void) -{ - ulong now = READ_TIMER; /* current tick value */ - - /* normal mode (non roll) */ - if (now >= lastinc) - /* move stamp forward with absolute diff ticks */ - timestamp += (now - lastinc); - else - /* we have rollover of incrementer */ - timestamp += (0xFFFFFFFF - lastinc) + now; - lastinc = now; - return timestamp; -} - -/* waits specified delay value and resets timestamp */ -void udelay_masked(unsigned long usec) -{ - ulong tmo; - ulong endtime; - signed long diff; - - if (usec >= 1000) { - /* "big" number, spread normalization to seconds */ - /* start to normalize for usec to ticks per sec */ - tmo = usec / 1000; - /* find number of "ticks" to wait to achieve target */ - tmo *= CFG_HZ; - tmo /= 1000;/* finish normalize. */ - } else { - /* else small number, don't kill it prior to HZ multiply */ - tmo = usec * CFG_HZ; - tmo /= (1000*1000); - } - endtime = get_timer_masked() + tmo; - - do { - ulong now = get_timer_masked(); - diff = endtime - now; - } while (diff >= 0); -} - -/* - * This function is derived from PowerPC code (read timebase as long long). - * On ARM it just returns the timer value. - */ -unsigned long long get_ticks(void) -{ - return get_timer(0); -} -/* - * This function is derived from PowerPC code (timebase clock frequency). - * On ARM it returns the number of timer ticks per second. - */ -ulong get_tbclk(void) -{ - ulong tbclk; - tbclk = CFG_HZ; - return tbclk; -} diff --git a/cpu/arm1136/omap24xx/start.S b/cpu/arm1136/omap24xx/start.S deleted file mode 100644 index 5634312..0000000 --- a/cpu/arm1136/omap24xx/start.S +++ /dev/null @@ -1,42 +0,0 @@ -/* - * armboot - Startup Code for OMP2420/ARM1136 CPU-core - * - * Copyright (c) 2004 Texas Instruments - * - * Copyright (c) 2001 Marius Gr??ger - * Copyright (c) 2002 Alex Z??pke - * Copyright (c) 2002 Gary Jennejohn - * Copyright (c) 2003 Richard Woodruff - * Copyright (c) 2003 Kshitij - * - * 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 - -.globl reset_cpu -reset_cpu: - ldr r1, rstctl /* get addr for global reset reg */ - mov r3, #0x2 /* full reset pll+mpu */ - str r3, [r1] /* force reset */ - mov r0, r0 -_loop_forever: - b _loop_forever -rstctl: - .word PM_RSTCTRL_WKUP diff --git a/cpu/arm1136/start.S b/cpu/arm1136/start.S index 56009d0..8b765f1 100644 --- a/cpu/arm1136/start.S +++ b/cpu/arm1136/start.S @@ -30,6 +30,9 @@ #include #include +#if !defined(CONFIG_INTEGRATOR) && ! defined(CONFIG_ARCH_CINTEGRATOR) +#include +#endif .globl _start _start: b reset #ifdef CONFIG_ONENAND_IPL @@ -435,4 +438,22 @@ fiq: arm1136_cache_flush: mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache mov pc, lr @ back to caller + +#if defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_CINTEGRATOR) +/* Use the IntegratorCP function from board/integratorcp/platform.S */ +#else + + .align 5 +.globl reset_cpu +reset_cpu: + ldr r1, rstctl /* get addr for global reset reg */ + mov r3, #0x2 /* full reset pll+mpu */ + str r3, [r1] /* force reset */ + mov r0, r0 +_loop_forever: + b _loop_forever +rstctl: + .word PM_RSTCTRL_WKUP + +#endif #endif /* CONFIG_ONENAND_IPL */ diff --git a/cpu/arm926ejs/davinci/lowlevel_init.S b/cpu/arm926ejs/davinci/lowlevel_init.S index 79bc692..a87c112 100644 --- a/cpu/arm926ejs/davinci/lowlevel_init.S +++ b/cpu/arm926ejs/davinci/lowlevel_init.S @@ -3,11 +3,6 @@ * * Copyright (C) 2007 Sergey Kubushyn * - * Copyright (C) 2008 Prodrive BV - * Changed: - * Made board specific defines such as DDR timing and PLL - * dividers. These should be set in the board config file - * * Partially based on TI sources, original copyrights follow: */ @@ -161,17 +156,17 @@ WaitPPL2Loop: /* Program the PLL Multiplier */ ldr r6, PLL2_PLLM - mov r2, $CFG_DAVINCI_PLL2_PLLM + mov r2, $0x17 /* 162 MHz */ str r2, [r6] /* Program the PLL2 Divisor Value */ ldr r6, PLL2_DIV2 - mov r3, $CFG_DAVINCI_PLL2_DIV2 + mov r3, $0x01 str r3, [r6] /* Program the PLL2 Divisor Value */ ldr r6, PLL2_DIV1 - mov r4, $CFG_DAVINCI_PLL2_DIV1 + mov r4, $0x0b /* 54 MHz */ str r4, [r6] /* PLL2 DIV2 MMR */ @@ -278,7 +273,7 @@ checkDDRStatClkStop: bne checkDDRStatClkStop /*------------------------------------------------------* - * Program DDR2 MMRs * + * Program DDR2 MMRs for 162MHz Setting * *------------------------------------------------------*/ /* Program PHY Control Register */ @@ -293,12 +288,12 @@ checkDDRStatClkStop: /* Program SDRAM TIM-0 Config Register */ ldr r6, SDTIM0 - ldr r7, SDTIM0_VAL + ldr r7, SDTIM0_VAL_162MHz str r7, [r6] /* Program SDRAM TIM-1 Config Register */ ldr r6, SDTIM1 - ldr r7, SDTIM1_VAL + ldr r7, SDTIM1_VAL_162MHz str r7, [r6] /* Program the SDRAM Bank Config Control Register */ @@ -440,7 +435,7 @@ WaitLoop: /* Program the PLL Multiplier */ ldr r6, PLL1_PLLM - mov r3, $CFG_DAVINCI_PLL1_PLLM + mov r3, $0x15 /* For 594MHz */ str r3, [r6] /* Wait for PLL to Reset Properly */ @@ -472,7 +467,7 @@ PLL1Lock: nop /*------------------------------------------------------* - * AEMIF configuration for NAND/NOR Flash * + * AEMIF configuration for NOR Flash (double check) * *------------------------------------------------------*/ ldr r0, _PINMUX0 ldr r1, _DEV_SETTING @@ -484,12 +479,6 @@ PLL1Lock: orr r2, r2, r1 str r2, [r0] - ldr r0, ACFG2 - ldr r1, ACFG2_VAL - ldr r2, [r0] - and r1, r2, r1 - str r1, [r0] - ldr r0, ACFG3 ldr r1, ACFG3_VAL ldr r2, [r0] @@ -508,12 +497,6 @@ PLL1Lock: and r1, r2, r1 str r1, [r0] - ldr r0, NANDFCR - ldr r1, NANDFCR_VAL - ldr r2, [r0] - and r1, r2, r1 - str r1, [r0] - /*--------------------------------------* * VTP manual Calibration * *--------------------------------------*/ @@ -577,36 +560,24 @@ _PINMUX1: .word 0x01c40004 /* Device Configuration Registers */ _DEV_SETTING: - .word CFG_DAVINCI_PINMUX_0 + .word 0x00000c1f WAITCFG: .word 0x01e00004 WAITCFG_VAL: - .word CFG_DAVINCI_WAITCFG -ACFG2: - .word 0x01e00010 -ACFG2_VAL: - .word CFG_DAVINCI_ACFG2 + .word 0 ACFG3: .word 0x01e00014 ACFG3_VAL: - .word CFG_DAVINCI_ACFG3 + .word 0x3ffffffd ACFG4: .word 0x01e00018 ACFG4_VAL: - .word CFG_DAVINCI_ACFG4 + .word 0x3ffffffd ACFG5: .word 0x01e0001c ACFG5_VAL: - .word CFG_DAVINCI_ACFG5 -NANDFCR: - .word 0x01e00060 -NANDFCR_VAL: -#ifdef CFG_DAVINCI_NANDCE - .word (1 << (CFG_DAVINCI_NANDCE - 2)) -#else - .word 0x00000000 -#endif + .word 0x3ffffffd MDCTL_DDR2: .word 0x01c41a34 @@ -628,27 +599,33 @@ PSC_FLAG_CLEAR: PSC_GEM_FLAG_CLEAR: .word 0xfffffeff -/* DDR2 MMR & CONFIGURATION VALUES */ +/* DDR2 MMR & CONFIGURATION VALUES, 162 MHZ clock */ DDRCTL: .word 0x200000e4 DDRCTL_VAL: - .word CFG_DAVINCI_DDRCTL + .word 0x50006405 SDREF: .word 0x2000000c SDREF_VAL: - .word CFG_DAVINCI_SDREF + .word 0x000005c3 SDCFG: .word 0x20000008 SDCFG_VAL: - .word CFG_DAVINCI_SDCFG +#ifdef DDR_4BANKS + .word 0x00178622 +#elif defined DDR_8BANKS + .word 0x00178632 +#else +#error "Unknown DDR configuration!!!" +#endif SDTIM0: .word 0x20000010 -SDTIM0_VAL: - .word CFG_DAVINCI_SDTIM0 +SDTIM0_VAL_162MHz: + .word 0x28923211 SDTIM1: .word 0x20000014 -SDTIM1_VAL: - .word CFG_DAVINCI_SDTIM1 +SDTIM1_VAL_162MHz: + .word 0x0016c722 VTPIOCR: .word 0x200000f0 /* VTP IO Control register */ DDRVTPR: @@ -722,7 +699,7 @@ PLL2_DIV_MASK: MMARG_BRF0: .word 0x01c42010 /* BRF margin mode 0 (R/W)*/ MMARG_BRF0_VAL: - .word CFG_DAVINCI_MMARG_BRF0 + .word 0x00444400 DDR2_START_ADDR: .word 0x80000000 diff --git a/cpu/arm926ejs/davinci/nand.c b/cpu/arm926ejs/davinci/nand.c index 3257f83..127be9f 100644 --- a/cpu/arm926ejs/davinci/nand.c +++ b/cpu/arm926ejs/davinci/nand.c @@ -117,7 +117,7 @@ static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode) dummy = emif_addr->NANDF3ECC; dummy = emif_addr->NANDF4ECC; - emif_addr->NANDFCR |= (1 << (CFG_DAVINCI_NANDCE + 6)); + emif_addr->NANDFCR |= (1 << 8); } static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t region) @@ -147,7 +147,7 @@ static int nand_davinci_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u n = (this->eccmode == NAND_ECC_HW12_2048) ? 4 : 1; - region = (CFG_DAVINCI_NANDCE - 1); + region = 1; while (n--) { tmp = nand_davinci_readecc(mtd, region); *ecc_code++ = tmp; @@ -311,9 +311,40 @@ static int nand_davinci_waitfunc(struct mtd_info *mtd, struct nand_chip *this, i static void nand_flash_init(void) { - /* All EMIF initialization is done in lowlevel_init.S - * and config values are in the board config files - */ + u_int32_t acfg1 = 0x3ffffffc; + u_int32_t acfg2 = 0x3ffffffc; + u_int32_t acfg3 = 0x3ffffffc; + u_int32_t acfg4 = 0x3ffffffc; + emifregs emif_regs; + + /*------------------------------------------------------------------* + * NAND FLASH CHIP TIMEOUT @ 459 MHz * + * * + * AEMIF.CLK freq = PLL1/6 = 459/6 = 76.5 MHz * + * AEMIF.CLK period = 1/76.5 MHz = 13.1 ns * + * * + *------------------------------------------------------------------*/ + acfg1 = 0 + | (0 << 31 ) /* selectStrobe */ + | (0 << 30 ) /* extWait */ + | (1 << 26 ) /* writeSetup 10 ns */ + | (3 << 20 ) /* writeStrobe 40 ns */ + | (1 << 17 ) /* writeHold 10 ns */ + | (1 << 13 ) /* readSetup 10 ns */ + | (5 << 7 ) /* readStrobe 60 ns */ + | (1 << 4 ) /* readHold 10 ns */ + | (3 << 2 ) /* turnAround ?? ns */ + | (0 << 0 ) /* asyncSize 8-bit bus */ + ; + + emif_regs = (emifregs)DAVINCI_ASYNC_EMIF_CNTRL_BASE; + + emif_regs->AWCCR |= 0x10000000; + emif_regs->AB1CR = acfg1; /* 0x08244128 */; + emif_regs->AB2CR = acfg2; + emif_regs->AB3CR = acfg3; + emif_regs->AB4CR = acfg4; + emif_regs->NANDFCR = 0x00000101; } int board_nand_init(struct nand_chip *nand) diff --git a/cpu/arm926ejs/davinci/timer.c b/cpu/arm926ejs/davinci/timer.c index 4797797..8bb8b45 100644 --- a/cpu/arm926ejs/davinci/timer.c +++ b/cpu/arm926ejs/davinci/timer.c @@ -42,9 +42,9 @@ typedef volatile struct { u_int32_t pid12; - u_int32_t emumgt; - u_int32_t na1; - u_int32_t na2; + u_int32_t emumgt_clksped; + u_int32_t gpint_en; + u_int32_t gpdir_dat; u_int32_t tim12; u_int32_t tim34; u_int32_t prd12; @@ -52,12 +52,21 @@ typedef volatile struct { u_int32_t tcr; u_int32_t tgcr; u_int32_t wdtcr; + u_int32_t tlgc; + u_int32_t tlmr; } davinci_timer; davinci_timer *timer = (davinci_timer *)CFG_TIMERBASE; #define TIMER_LOAD_VAL (CFG_HZ_CLOCK / CFG_HZ) -#define TIM_CLK_DIV 16 +#define READ_TIMER timer->tim34 + +/* + * Timer runs with CFG_HZ_CLOCK, currently 27MHz. To avoid wrap + * around of timestamp already after min ~159s, divide it, e.g. by 16. + * timestamp will then wrap around all min ~42min + */ +#define DIV(x) ((x) >> 4) static ulong timestamp; static ulong lastinc; @@ -67,50 +76,63 @@ int timer_init(void) /* We are using timer34 in unchained 32-bit mode, full speed */ timer->tcr = 0x0; timer->tgcr = 0x0; - timer->tgcr = 0x06 | ((TIM_CLK_DIV - 1) << 8); + timer->tgcr = 0x06; timer->tim34 = 0x0; timer->prd34 = TIMER_LOAD_VAL; lastinc = 0; + timer->tcr = 0x80 << 16; timestamp = 0; - timer->tcr = 2 << 22; return(0); } void reset_timer(void) { - timer->tcr = 0x0; - timer->tim34 = 0; - lastinc = 0; + reset_timer_masked(); +} + +ulong get_timer(ulong base) +{ + return(get_timer_masked() - base); +} + +void set_timer(ulong t) +{ + timestamp = t; +} + +void udelay(unsigned long usec) +{ + udelay_masked(usec); +} + +void reset_timer_masked(void) +{ + lastinc = DIV(READ_TIMER); timestamp = 0; - timer->tcr = 2 << 22; } -static ulong get_timer_raw(void) +ulong get_timer_raw(void) { - ulong now = timer->tim34; + ulong now = DIV(READ_TIMER); if (now >= lastinc) { /* normal mode */ timestamp += now - lastinc; } else { /* overflow ... */ - timestamp += now + TIMER_LOAD_VAL - lastinc; + timestamp += now + DIV(TIMER_LOAD_VAL) - lastinc; } lastinc = now; return timestamp; } -ulong get_timer(ulong base) -{ - return((get_timer_raw() / (TIMER_LOAD_VAL / TIM_CLK_DIV)) - base); } - -void set_timer(ulong t) +ulong get_timer_masked(void) { - timestamp = t; + return(get_timer_raw() / DIV(TIMER_LOAD_VAL)); } -void udelay(unsigned long usec) +void udelay_masked(unsigned long usec) { ulong tmo; ulong endtime; @@ -118,7 +140,7 @@ void udelay(unsigned long usec) tmo = CFG_HZ_CLOCK / 1000; tmo *= usec; - tmo /= (1000 * TIM_CLK_DIV); + tmo /= 1000; endtime = get_timer_raw() + tmo; @@ -143,5 +165,8 @@ unsigned long long get_ticks(void) */ ulong get_tbclk(void) { - return CFG_HZ; + ulong tbclk; + + tbclk = CFG_HZ; + return(tbclk); } -- cgit v1.1