diff options
author | Steve Sakoman <steve@sakoman.com> | 2010-06-08 20:07:46 (GMT) |
---|---|---|
committer | Sandeep Paulraj <s-paulraj@ti.com> | 2010-07-06 00:00:00 (GMT) |
commit | d34efc767d26d353e0257042080eec7012e5440f (patch) | |
tree | b41852c65401a0c6d484415a17c29370b21cea3c /arch/arm/cpu | |
parent | f56348af5d255f6dc2a8bcd7d798ab5edf8fba25 (diff) | |
download | u-boot-d34efc767d26d353e0257042080eec7012e5440f.tar.xz |
ARMV7: Add basic support for TI OMAP4
This patch adds minimum support for OMAP4. Code which can be shared
between OMAP3 and OMAP4 is placed in arch/arm/cpu/armv7/omap-common
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/Makefile | 46 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/config.mk | 33 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/reset.S (renamed from arch/arm/cpu/armv7/omap3/reset.S) | 0 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/timer.c (renamed from arch/arm/cpu/armv7/omap3/timer.c) | 5 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap3/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap4/Makefile | 48 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap4/board.c | 90 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap4/lowlevel_init.S | 48 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap4/sys_info.c | 54 |
9 files changed, 324 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile new file mode 100644 index 0000000..3a4a304 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/Makefile @@ -0,0 +1,46 @@ +# +# (C) Copyright 2000-2003 +# 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)libomap-common.a + +SOBJS := reset.o +COBJS := timer.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 $(obj).depend + +######################################################################### diff --git a/arch/arm/cpu/armv7/omap-common/config.mk b/arch/arm/cpu/armv7/omap-common/config.mk new file mode 100644 index 0000000..49ac9c7 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/config.mk @@ -0,0 +1,33 @@ +# +# (C) Copyright 2002 +# Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# +PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float + +# Make ARMv5 to allow more compilers to work, even though its v7a. +PLATFORM_CPPFLAGS += -march=armv5 +# ========================================================================= +# +# Supply options according to compiler version +# +# ========================================================================= +PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,\ + $(call cc-option,-malignment-traps,)) diff --git a/arch/arm/cpu/armv7/omap3/reset.S b/arch/arm/cpu/armv7/omap-common/reset.S index a53c408..a53c408 100644 --- a/arch/arm/cpu/armv7/omap3/reset.S +++ b/arch/arm/cpu/armv7/omap-common/reset.S diff --git a/arch/arm/cpu/armv7/omap3/timer.c b/arch/arm/cpu/armv7/omap-common/timer.c index 401bfe6..69e285f 100644 --- a/arch/arm/cpu/armv7/omap3/timer.c +++ b/arch/arm/cpu/armv7/omap-common/timer.c @@ -84,6 +84,11 @@ void set_timer(ulong t) /* delay x useconds */ void __udelay(unsigned long usec) { +#if defined(CONFIG_OMAP44XX) + /* TODO temporary hack until OMAP4 clock setup routines are present */ + if (usec > 1000) + usec = usec/1000; +#endif long tmo = usec * (TIMER_CLOCK / 1000) / 1000; unsigned long now, last = readl(&timer_base->tcrr); diff --git a/arch/arm/cpu/armv7/omap3/Makefile b/arch/arm/cpu/armv7/omap3/Makefile index 7d63c6b..79ae267 100644 --- a/arch/arm/cpu/armv7/omap3/Makefile +++ b/arch/arm/cpu/armv7/omap3/Makefile @@ -27,7 +27,6 @@ LIB = $(obj)lib$(SOC).a SOBJS := lowlevel_init.o SOBJS += cache.o -SOBJS += reset.o COBJS += board.o COBJS += clock.o @@ -35,7 +34,6 @@ COBJS += gpio.o COBJS += mem.o COBJS += syslib.o COBJS += sys_info.o -COBJS += timer.o COBJS-$(CONFIG_EMIF4) += emif4.o COBJS-$(CONFIG_SDRC) += sdrc.o diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile new file mode 100644 index 0000000..ecf64f9 --- /dev/null +++ b/arch/arm/cpu/armv7/omap4/Makefile @@ -0,0 +1,48 @@ +# +# (C) Copyright 2000-2010 +# 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 + +SOBJS += lowlevel_init.o + +COBJS += board.o +COBJS += sys_info.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS)) + +all: $(obj).depend $(LIB) + +$(LIB): $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c new file mode 100644 index 0000000..5bf7173 --- /dev/null +++ b/arch/arm/cpu/armv7/omap4/board.c @@ -0,0 +1,90 @@ +/* + * + * Common functions for OMAP4 based boards + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.com> + * Steve Sakoman <steve@sakoman.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/arch/cpu.h> +#include <asm/arch/sys_proto.h> + +/* + * Routine: s_init + * Description: Does early system init of muxing and clocks. + * - Called path is with SRAM stack. + */ +void s_init(void) +{ + watchdog_init(); +} + +/* + * Routine: wait_for_command_complete + * Description: Wait for posting to finish on watchdog + */ +void wait_for_command_complete(struct watchdog *wd_base) +{ + int pending = 1; + do { + pending = readl(&wd_base->wwps); + } while (pending); +} + +/* + * Routine: watchdog_init + * Description: Shut down watch dogs + */ +void watchdog_init(void) +{ + struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE; + + writel(WD_UNLOCK1, &wd2_base->wspr); + wait_for_command_complete(wd2_base); + writel(WD_UNLOCK2, &wd2_base->wspr); +} + +/* + * Routine: dram_init + * Description: sets uboots idea of sdram size + */ +int dram_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + gd->bd->bi_dram[0].start = 0x80000000; + gd->bd->bi_dram[0].size = 512 << 20; + return 0; +} + +/* + * Print board information + */ +int checkboard(void) +{ + puts(sysinfo.board_string); + return 0; +} + diff --git a/arch/arm/cpu/armv7/omap4/lowlevel_init.S b/arch/arm/cpu/armv7/omap4/lowlevel_init.S new file mode 100644 index 0000000..9a181eb --- /dev/null +++ b/arch/arm/cpu/armv7/omap4/lowlevel_init.S @@ -0,0 +1,48 @@ +/* + * Board specific setup info + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.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 <asm/arch/omap4.h> + +.globl lowlevel_init +lowlevel_init: + /* + * Setup a temporary stack + */ + ldr sp, =LOW_LEVEL_SRAM_STACK + + /* + * Save the old lr(passed in ip) and the current lr to stack + */ + push {ip, lr} + + /* + * go setup pll, mux, memory + */ + bl s_init + pop {ip, pc} + diff --git a/arch/arm/cpu/armv7/omap4/sys_info.c b/arch/arm/cpu/armv7/omap4/sys_info.c new file mode 100644 index 0000000..3b73191 --- /dev/null +++ b/arch/arm/cpu/armv7/omap4/sys_info.c @@ -0,0 +1,54 @@ +/* + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.com> + * Steve Sakoman <steve@sakoman.com> + * + * 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/sys_proto.h> + +/* + * get_device_type(): tell if GP/HS/EMU/TST + */ +u32 get_device_type(void) +{ + return 0; +} + +/* + * get_board_rev() - get board revision + */ +u32 get_board_rev(void) +{ + return 0x20; +} + +/* + * Print CPU information + */ +int print_cpuinfo(void) +{ + + puts("CPU : OMAP4430\n"); + + return 0; +} + |