From: Alessandro Rubini rubini@unipv.it Subject: Initial support for Nomadik 8815 development board
The NMDK8815 board is distributed by ST Microelectornics. Other (proprietary) code must be run to unlock the CPU before U-Boot runs. doc/README.nmdk8815 outlines the boot sequence.
This is the initial port, with basic infrastructure and a working serial port.
Signed-off-by: Alessandro Rubini rubini@unipv.it Acked-by: Andrea Gallo andrea.gallo@stnwireless.com --- changes since v2: - added doc/README.nmdk8815 to explain the boot process - moved code to a vendor dir - fixed Makefiles as suggested (and removed unused CFLAGS) - added copyright where missing (u-boot.lds is copied, so no new copyright) - fixed remaining whitespace issues and comment style - other detais JC noted
MAINTAINERS | 5 + MAKEALL | 1 + Makefile | 11 ++ board/st/nmdk8815/Makefile | 55 +++++++ board/st/nmdk8815/config.mk | 26 +++ board/st/nmdk8815/nmdk8815.c | 73 +++++++++ board/st/nmdk8815/platform.S | 345 ++++++++++++++++++++++++++++++++++++++++ board/st/nmdk8815/u-boot.lds | 51 ++++++ cpu/arm926ejs/nomadik/Makefile | 46 ++++++ cpu/arm926ejs/nomadik/reset.S | 27 +++ cpu/arm926ejs/nomadik/timer.c | 180 +++++++++++++++++++++ doc/README.nmdk8815 | 22 +++ include/configs/nmdk8815.h | 188 ++++++++++++++++++++++ 13 files changed, 1030 insertions(+), 0 deletions(-) create mode 100644 board/st/nmdk8815/Makefile create mode 100644 board/st/nmdk8815/config.mk create mode 100644 board/st/nmdk8815/nmdk8815.c create mode 100644 board/st/nmdk8815/platform.S create mode 100644 board/st/nmdk8815/u-boot.lds create mode 100644 cpu/arm926ejs/nomadik/Makefile create mode 100644 cpu/arm926ejs/nomadik/reset.S create mode 100644 cpu/arm926ejs/nomadik/timer.c create mode 100644 doc/README.nmdk8815 create mode 100644 include/configs/nmdk8815.h
diff --git a/MAINTAINERS b/MAINTAINERS index 127604b..e2a90d2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -581,6 +581,11 @@ Stefan Roese sr@denx.de pdnb3 xscale scpu xscale
+Alessandro Rubini rubini@unipv.it +Nomadik Linux Team STN_WMM_nomadik_linux@list.st.com + + nmdk8815 ARM926EJS (Nomadik 8815 Soc) + Robert Schwebel r.schwebel@pengutronix.de
csb226 xscale diff --git a/MAKEALL b/MAKEALL index dbed268..a209a4d 100755 --- a/MAKEALL +++ b/MAKEALL @@ -487,6 +487,7 @@ LIST_ARM9=" \ mx1ads \ mx1fs2 \ netstar \ + nmdk8815 \ omap1510inn \ omap1610h2 \ omap1610inn \ diff --git a/Makefile b/Makefile index fd521b6..de6e6ab 100644 --- a/Makefile +++ b/Makefile @@ -2644,6 +2644,17 @@ mx1fs2_config : unconfig netstar_config: unconfig @$(MKCONFIG) $(@:_config=) arm arm925t netstar
+nmdk8815_config \ +nmdk8815_onenand_config: unconfig + @ > $(obj)include/config.h + @if [ "$(findstring _onenand, $@)" ] ; then \ + echo "#define CONFIG_BOOT_ONENAND" >> $(obj)include/config.h; \ + $(XECHO) "... configured for OneNand Flash"; \ + else \ + $(XECHO) "... configured for Nand Flash"; \ + fi + @$(MKCONFIG) -a nmdk8815 arm arm926ejs nmdk8815 st nomadik + omap1510inn_config : unconfig @$(MKCONFIG) $(@:_config=) arm arm925t omap1510inn
diff --git a/board/st/nmdk8815/Makefile b/board/st/nmdk8815/Makefile new file mode 100644 index 0000000..be9a424 --- /dev/null +++ b/board/st/nmdk8815/Makefile @@ -0,0 +1,55 @@ +# +# (C) Copyright 2000-2004 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# (C) Copyright 2004 +# ARM Ltd. +# Philippe Robin, philippe.robin@arm.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 $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).a + +COBJS := nmdk8815.o +SOBJS := platform.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) $(SOBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS) + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak $(obj).depend + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/board/st/nmdk8815/config.mk b/board/st/nmdk8815/config.mk new file mode 100644 index 0000000..590393b --- /dev/null +++ b/board/st/nmdk8815/config.mk @@ -0,0 +1,26 @@ +# (C) Copyright 2007 +# STMicroelectronics, <www.st.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 +# +# +# image should be loaded at 0x01000000 +# + +TEXT_BASE = 0x03F80000 diff --git a/board/st/nmdk8815/nmdk8815.c b/board/st/nmdk8815/nmdk8815.c new file mode 100644 index 0000000..5536d97 --- /dev/null +++ b/board/st/nmdk8815/nmdk8815.c @@ -0,0 +1,73 @@ +/* + * (C) Copyright 2005 + * STMicrolelctronics, <www.st.com> + * + * (C) Copyright 2004 + * ARM Ltd. + * Philippe Robin, philippe.robin@arm.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/io.h> + +#ifdef CONFIG_SHOW_BOOT_PROGRESS +void show_boot_progress(int progress) +{ + printf("%i\n", progress); +} +#endif + +/* + * Miscellaneous platform dependent initialisations + */ +int board_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + gd->bd->bi_arch_number = MACH_TYPE_NOMADIK; + gd->bd->bi_boot_params = 0x00000100; + writel(0xC37800F0, NOMADIK_GPIO1_BASE + 0x20); + writel(0x00000000, NOMADIK_GPIO1_BASE + 0x24); + writel(0x00000000, NOMADIK_GPIO1_BASE + 0x28); + writel(readl(NOMADIK_SRC_BASE) | 0x8000, NOMADIK_SRC_BASE); + + icache_enable(); + + return 0; +} + +int misc_init_r(void) +{ + setenv("verify", "n"); + return 0; +} + +int dram_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + /* set dram bank start addr and size */ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; + + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE; + return 0; +} diff --git a/board/st/nmdk8815/platform.S b/board/st/nmdk8815/platform.S new file mode 100644 index 0000000..d4b0f0b --- /dev/null +++ b/board/st/nmdk8815/platform.S @@ -0,0 +1,345 @@ +/* + * Board specific setup info + * + * (C) Copyright 2005 + * STMicrolelctronics, <www.st.com> + * + * (C) Copyright 2004, ARM Ltd. + * Philippe Robin, philippe.robin@arm.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 <version.h> + +.globl lowlevel_init +lowlevel_init: + /* Jump to the flash address */ + ldr r0, =CFG_ONENAND_BASE + + /* + * Make it independent whether we boot from 0x0 or 0x30000000. + * Non-portable: it relies on the knowledge that ip has to be updated + */ + orr ip, ip, r0 /* adjust return address of cpu_init_crit */ + orr lr, lr, r0 /* adjust return address */ + orr pc, pc, r0 /* jump to the normal address */ + nop + + /* Initialize PLL, Remap clear, FSMC, MPMC here! */ + /* What about GPIO, CLCD and UART */ + + /* PLL Initialization */ + /* Prog the PLL1 @ 266 MHz ==> SDRAM Clock = 100.8 MHz */ + ldr r0, =NOMADIK_SRC_BASE + + ldr r1, =0x2B013502 + + str r1, [r0, #0x14] + + + /* Used to set all the timers clock to 2.4MHZ */ + ldr r1, =0x2AAAA004 + str r1, [r0] + + ldr r1, =0x10000000 + str r1, [r0, #0x10] + + /* FSMC setup ---- */ + ldr r0, =NOMADIK_FSMC_BASE + + ldr r1, =0x10DB /* For 16-bit NOR flash */ + str r1, [r0,#0x08] + + ldr r1, =0x03333333 /* For 16-bit NOR flash */ + str r1, [r0, #0xc] + + /* oneNAND setting */ + ldr r1, =0x0000105B /* BCR0 Prog control register */ + str r1, [r0] + + ldr r1, =0x0A200551 /* BTR0 Prog timing register */ + str r1, [r0, #0x04] + + /* preload the instructions into icache */ + add r0, pc, #0x1F + bic r0, r0, #0x1F + mcr p15, 0, r0, c7, c13, 1 + add r0, r0, #0x20 + mcr p15, 0, r0, c7, c13, 1 + + /* Now Clear Remap */ + ldr r0, =NOMADIK_SRC_BASE + + ldr r1, =0x2004 + str r1, [r0] + + ldr r1, =0x10000000 + str r1, [r0,#0x10] + + ldr r0,=0x101E9000 + ldr r1, =0x2004 + str r1, [r0] + + ldr r0, =NOMADIK_SRC_BASE + ldr r1, =0x2104 + str r1, [r0] + + /* FSMC setup -- */ + mov r0, #(NOMADIK_FSMC_BASE & 0x10000000) + orr r0, r0, #(NOMADIK_FSMC_BASE & 0x0FFFFFFF) + + ldr r1, =0x10DB /* For 16-bit NOR flash */ + str r1, [r0, #0x8] + + ldr r1, =0x03333333 /* For 16-bit NOR flash */ + str r1, [r0, #0xc] + + + + /* MPMC Setup */ + ldr r0, =NOMADIK_MPMC_BASE + + ldr r1, =0xF00003 + str r1, [r0] /* Enable the MPMC and the DLL */ + + ldr r1, =0x183 + str r1, [r0, #0x20] + + ldr r2, =NOMADIK_PMU_BASE + + ldr r1, =0x1111 + str r1, [r2] + + ldr r1, =0x1111 /* Prog the, mand delay strategy */ + str r1, [r0, #0x28] + + ldr r1, =0x103 /* NOP ,mand */ + str r1, [r0, #0x20] + + /* FIXME -- Wait required here */ + + ldr r1, =0x103 /* PALL ,mand*/ + str r1, [r0, #0x20] + + ldr r1, =0x1 + str r1, [r0, #0x24] /* To do at least two auto-refresh */ + + /* FIXME -- Wait required here */ + + /* Auto-refresh period = 7.8us @ SDRAM Clock = 100.8 MHz */ + ldr r1, =0x31 + str r1, [r0, #0x24] + + /* Prog Little Endian, Not defined in 8800 board */ + ldr r1, =0x0 + str r1, [r0, #0x8] + + + ldr r1, =0x2 + str r1, [r0, #0x30] /* Prog tRP timing */ + + ldr r1, =0x4 /* Change for 8815 */ + str r1, [r0, #0x34] /* Prog tRAS timing */ + + ldr r1, =0xB + str r1, [r0, #0x38] /* Prog tSREX timing */ + + + ldr r1, =0x1 + str r1, [r0, #0x44] /* Prog tWR timing */ + + ldr r1, =0x8 + str r1, [r0, #0x48] /* Prog tRC timing */ + + ldr r1, =0xA + str r1, [r0, #0x4C] /* Prog tRFC timing */ + + ldr r1, =0xB + str r1, [r0, #0x50] /* Prog tXSR timing */ + + ldr r1, =0x1 + str r1, [r0, #0x54] /* Prog tRRD timing */ + + ldr r1, =0x1 + str r1, [r0, #0x58] /* Prog tMRD timing */ + + ldr r1, =0x1 + str r1, [r0, #0x5C] /* Prog tCDLR timing */ + + /* DDR-SDRAM MEMORY IS ON BANK0 8815 */ + ldr r1, =0x304 /* Prog RAS and CAS for CS 0 */ + str r1, [r0, #0x104] + + /* SDR-SDRAM MEMORY IS ON BANK1 8815 */ + ldr r1, =0x304 /* Prog RAS and CAS for CS 1 */ + str r1, [r0, #0x124] + /* THE DATA BUS WIDE IS PROGRAM FOR 16-BITS */ + /* DDR-SDRAM MEMORY IS ON BANK0*/ + + ldr r1, =0x884 /* 8815 : config reg in BRC for CS0 */ + str r1, [r0, #0x100] + + /*SDR-SDRAM MEMORY IS ON BANK1*/ + + ldr r1, =0x884 /* 8815 : config reg in BRC for CS1 */ + str r1, [r0, #0x120] + + ldr r1, =0x83 /*MODE Mand*/ + str r1, [r0, #0x20] + + /* LOAD MODE REGISTER FOR 2 bursts of 16b, with DDR mem ON BANK0 */ + + ldr r1, =0x62000 /*Data in*/ + ldr r1, [r1] + + /* LOAD MODE REGISTER FOR 2 bursts of 16b, with DDR mem ON BANK1 */ + + ldr r1, =0x8062000 + ldr r1, [r1] + + ldr r1, =0x003 + str r1, [r0, #0x20] + + /* ENABLE ALL THE BUFFER FOR EACH AHB PORT*/ + + ldr r1, =0x01 /* Enable buffer 0 */ + str r1, [r0, #0x400] + + ldr r1, =0x01 /* Enable buffer 1 */ + str r1, [r0, #0x420] + + ldr r1, =0x01 /* Enable buffer 2 */ + str r1, [r0, #0x440] + + ldr r1, =0x01 /* Enable buffer 3 */ + str r1, [r0, #0x460] + + ldr r1, =0x01 /* Enable buffer 4 */ + str r1, [r0, #0x480] + + ldr r1, =0x01 /* Enable buffer 5 */ + str r1, [r0, #0x4A0] + + /* GPIO settings */ + + ldr r0, =NOMADIK_GPIO1_BASE + + ldr r1, =0xC0600000 + str r1, [r0, #0x20] + + ldr r1, =0x3F9FFFFF /* ABHI change this for uart1 */ + str r1, [r0, #0x24] + + ldr r1, =0x3F9FFFFF /* ABHI change this for uart1 */ + str r1, [r0, #0x28] + + ldr r0, =NOMADIK_GPIO0_BASE + + ldr r1, =0xFFFFFFFF + str r1, [r0, #0x20] + + ldr r1, =0x00 + str r1, [r0, #0x24] + + ldr r1, =0x00 + str r1, [r0, #0x28] + +/* Configure CPLD_CTRL register for enabling MUX logic for UART0/UART2 */ + + ldr r0, =NOMADIK_FSMC_BASE + + ldr r1,=0x10DB /* INIT FSMC bank 0 */ + str r1, [r0, #0x00] + + ldr r1,=0x0FFFFFFF + str r1, [r0, #0x04] + + ldr r1,=0x010DB /* INIT FSMC bank 1 */ + str r1, [r0, #0x08] + + ldr r1,=0x00FFFFFFF + str r1, [r0, #0x0C] + + ldr r0,=NOMADIK_UART0_BASE + + ldr r1,=0x00000000 + str r1,[r0,#0x30] + + ldr r1,=0x0000004e + str r1,[r0,#0x24] + + ldr r1,=0x00000008 + str r1,[r0,#0x28] + + ldr r1,=0x00000060 + str r1,[r0,#0x2C] + + ldr r1,=0x00000301 + str r1,[r0,#0x30] + + ldr r1,=0x00000066 + str r1,[r0] + + + ldr r0,=NOMADIK_UART1_BASE + + ldr r1,=0x00000000 + str r1,[r0,#0x30] + + ldr r1,=0x0000004e + str r1,[r0,#0x24] + + ldr r1,=0x00000008 + str r1,[r0,#0x28] + + ldr r1,=0x00000060 + str r1,[r0,#0x2C] + + ldr r1,=0x00000301 + str r1,[r0,#0x30] + + ldr r1,=0x00000066 + str r1,[r0] + + ldr r0,=NOMADIK_UART2_BASE + + ldr r1,=0x00000000 + str r1,[r0,#0x30] + + ldr r1,=0x0000004e + str r1,[r0,#0x24] + + ldr r1,=0x00000008 + str r1,[r0,#0x28] + + ldr r1,=0x00000060 + str r1,[r0,#0x2C] + + ldr r1,=0x00000301 + str r1,[r0,#0x30] + + ldr r1,=0x00000066 + str r1,[r0] + + /* Configure CPLD to enable UART0 */ + + + mov pc, lr diff --git a/board/st/nmdk8815/u-boot.lds b/board/st/nmdk8815/u-boot.lds new file mode 100644 index 0000000..6d6481b --- /dev/null +++ b/board/st/nmdk8815/u-boot.lds @@ -0,0 +1,51 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, gj@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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + . = ALIGN(4); + .text : + { + cpu/arm926ejs/start.o (.text) + *(.text) + } + . = ALIGN(4); + .rodata : { *(.rodata) } + . = ALIGN(4); + .data : { *(.data) } + . = ALIGN(4); + .got : { *(.got) } + + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss (NOLOAD) : { *(.bss) . = ALIGN(4); } + _end = .; +} diff --git a/cpu/arm926ejs/nomadik/Makefile b/cpu/arm926ejs/nomadik/Makefile new file mode 100644 index 0000000..e3bd2ee --- /dev/null +++ b/cpu/arm926ejs/nomadik/Makefile @@ -0,0 +1,46 @@ +# +# (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 = timer.o +SOBJS = reset.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) $(addprefix $(obj),$(SOBJS)) + +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/nomadik/reset.S b/cpu/arm926ejs/nomadik/reset.S new file mode 100644 index 0000000..522a817 --- /dev/null +++ b/cpu/arm926ejs/nomadik/reset.S @@ -0,0 +1,27 @@ +#include <config.h> +/* + * Processor reset for Nomadik + */ + + .align 5 +.globl reset_cpu +reset_cpu: +#if defined CONFIG_NOMADIK_8815 + ldr r0, =NOMADIK_SRC_BASE + ldr r1, =0x1 + str r1, [r0, #0x18] +#else + ldr r1, rstctl1 /* get clkm1 reset ctl */ + mov r3, #0x0 + strh r3, [r1] /* clear it */ + mov r3, #0x8 + strh r3, [r1] /* force dsp+arm reset */ +#endif +_loop_forever: + b _loop_forever + + +rstctl1: + .word 0xfffece10 + + diff --git a/cpu/arm926ejs/nomadik/timer.c b/cpu/arm926ejs/nomadik/timer.c new file mode 100644 index 0000000..3598fb8 --- /dev/null +++ b/cpu/arm926ejs/nomadik/timer.c @@ -0,0 +1,180 @@ +/* + * (C) Copyright 2003 + * Texas Instruments <www.ti.com> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger mgroeger@sysgo.de + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke azu@sysgo.de + * + * (C) Copyright 2002-2004 + * Gary Jennejohn, DENX Software Engineering, gj@denx.de + * + * (C) Copyright 2004 + * Philippe Robin, ARM Ltd. philippe.robin@arm.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/io.h> +#include <arm926ejs.h> + + +extern void reset_cpu(ulong addr); +#define TIMER_LOAD_VAL 0xffffffff + +/* macro to read the 32 bit timer */ +#define READ_TIMER readl(CONFIG_SYS_TIMERBASE+20) + +static ulong timestamp; +static ulong lastdec; + +/* nothing really to do with interrupts, just starts up a counter. */ +int timer_init(void) +{ + /* Load timer with initial value */ + writel(TIMER_LOAD_VAL, CONFIG_SYS_TIMERBASE + 16); + /* Set timer to be enabled, free-running, no interrupts, 256 divider, + 32-bit, wrap-mode */ + writel(0x8a, CONFIG_SYS_TIMERBASE + 24); + /* init the timestamp and lastdec value */ + reset_timer_masked(); + 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 */ + tmo *= CONFIG_SYS_HZ; /* find number of "ticks" */ + tmo /= 1000; /* finish normalize. */ + } else { + /* small number, don't kill it prior to HZ multiply */ + tmo = usec * CONFIG_SYS_HZ; + tmo /= (1000*1000); + } + + tmp = get_timer(0); /* get current timestamp */ + if ((tmo + tmp + 1) < tmp) /* will roll time stamp? */ + reset_timer_masked(); /* reset to 0, set lastdec value */ + else + tmo += tmp; + + while (get_timer_masked() < tmo) + /* nothing */ ; +} + +void reset_timer_masked(void) +{ + /* reset time */ + lastdec = READ_TIMER; /* capure current decrementer value time */ + timestamp = 0; /* start "advancing" time stamp from 0 */ +} + +ulong get_timer_masked(void) +{ + ulong now = READ_TIMER; /* current tick value */ + + if (lastdec >= now) { /* normal mode (non roll) */ + /* move stamp fordward */ + timestamp += lastdec - now; + } else { + /* + * An overflow is expected. + * nts = ts + ld + (TLV - now) + * ts=old stamp, ld=time that passed before passing through -1 + * (TLV-now) amount of time after passing though -1 + * nts = new "advancing time stamp"...it could also roll + */ + timestamp += lastdec + TIMER_LOAD_VAL - now; + } + lastdec = now; + + return timestamp; +} + +/* waits specified delay value and resets timestamp */ +void udelay_masked(unsigned long usec) +{ + ulong tmo; + + if (usec >= 1000) { + /* if "big" number, spread normalization to seconds */ + tmo = usec / 1000; /* start to normalize */ + tmo *= CONFIG_SYS_HZ; /* find number of "ticks" */ + tmo /= 1000; /* finish normalize. */ + } else { + /* else small number, don't kill it prior to HZ multiply */ + tmo = usec * CONFIG_SYS_HZ; + tmo /= (1000*1000); + } + + reset_timer_masked(); + /* set "advancing" timestamp to 0, set lastdec vaule */ + + while (get_timer_masked() < tmo) + /* nothing */ ; +} + +/* + * 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 = CONFIG_SYS_HZ; + return tbclk; +} diff --git a/doc/README.nmdk8815 b/doc/README.nmdk8815 new file mode 100644 index 0000000..453cfae --- /dev/null +++ b/doc/README.nmdk8815 @@ -0,0 +1,22 @@ + +The Nomadik 8815 CPU has a "secure" boot mode where no external access +(not even JTAG) is allowed. The "remap" bits in the evaluation board +are configured in order to boot from the internal ROM memory (in +secure mode). + +The boot process as defined by the manufacturer executes external code +(loaded from NAND or OneNAND) that that disables such "security" in +order to run u-boot and later the kernel without constraints. Such +code is a proprietary initial boot loader, called "X-Loader" (in case +anyone wonders, it has no relations with other loaders with the same +name and there is no GPL code inside the ST X-Loader). + +SDRAM configuration, PLL setup and initial loading from NAND is +implemented in the X-Loader, so U-Boot is already running in SDRAM +when control is handed over to it. + + +On www.st.com/nomadik and on www.stnwireless.com there are documents, +summary data and white papers on Nomadik. The full datasheet for +STn8815 is not currently available on line but under specific request +to the local ST sales offices. diff --git a/include/configs/nmdk8815.h b/include/configs/nmdk8815.h new file mode 100644 index 0000000..a6badae --- /dev/null +++ b/include/configs/nmdk8815.h @@ -0,0 +1,188 @@ +/* + * (C) Copyright 2005 + * STMicroelectronics. + * Configuration settings for the STn8815 nomadik board. + * + * 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 + */ + +#ifndef __CONFIG_H +#define __CONFIG_H + +#define CONFIG_ARM926EJS +#define CONFIG_NOMADIK +#define CONFIG_NOMADIK_8815 +#define CONFIG_NOMADIK_NDK15 +#define CONFIG_NOMADIK_NHK15 + +#define CONFIG_SKIP_LOWLEVEL_INIT /* we have already been loaded to RAM */ + +/* commands */ +#include <config_cmd_default.h> +#define CONFIG_CMD_PING +#define CONFIG_CMD_DHCP +/* At this point there is no flash driver, so remove some commands */ +#undef CONFIG_CMD_ENV +#undef CONFIG_CMD_FLASH +#undef CONFIG_CMD_IMLS + +/* user interface */ +#define CONFIG_SYS_LONGHELP +#define CONFIG_SYS_HUSH_PARSER +#define CONFIG_SYS_PROMPT "Nomadik> " +#define CONFIG_SYS_PROMPT_HUSH_PS2 "> " +#define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */ +#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE \ + + sizeof(CONFIG_SYS_PROMPT) + 16) +#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE /* Boot Arg Buffer Size */ +#define CONFIG_SYS_MAXARGS 16 +#define CONFIG_SYS_LOAD_ADDR 0x800000 /* default load address */ +#define CONFIG_SYS_LOADS_BAUD_CHANGE + +/* boot config */ +#define CONFIG_SETUP_MEMORY_TAGS +#define CONFIG_INITRD_TAG +#define CONFIG_CMDLINE_TAG +#define CONFIG_BOOTDELAY 1 +#define CONFIG_BOOTARGS "root=/dev/ram0 console=ttyAMA1,115200n8 init=linuxrc" +#define CONFIG_BOOTCOMMAND "fsload 0x100000 kernel.uimg;" \ + " fsload 0x800000 initrd.gz.uimg;" \ + " bootm 0x100000 0x800000" + +/* memory-related information */ +#define CONFIG_NR_DRAM_BANKS 2 +#define PHYS_SDRAM_1 0x00000000 /* DDR-SDRAM Bank #1 */ +#define PHYS_SDRAM_1_SIZE 0x04000000 /* 64 MB */ +#define PHYS_SDRAM_2 0x08000000 /* SDR-SDRAM BANK #2*/ +#define PHYS_SDRAM_2_SIZE 0x04000000 /* 64 MB */ + +#define CONFIG_STACKSIZE (128*1024) /* regular stack */ +#ifdef CONFIG_USE_IRQ +# define CONFIG_STACKSIZE_IRQ (4*1024) /* IRQ stack */ +# define CONFIG_STACKSIZE_FIQ (4*1024) /* FIQ stack */ +#endif + +#define CONFIG_SYS_MEMTEST_START 0x00000000 +#define CONFIG_SYS_MEMTEST_END 0x0FFFFFFF +#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + 256*1024) +#define CONFIG_SYS_GBL_DATA_SIZE 128 /* for initial data */ + +#define CONFIG_MISC_INIT_R /* call misc_init_r during start up */ + +/* timing informazion */ +#define CONFIG_SYS_HZ (2400000 / 256) /* Timer0: 2.4Mhz + divider */ +#define CONFIG_SYS_TIMERBASE 0x101E2000 +#undef CONFIG_SYS_CLKS_IN_HZ + +/* serial port (PL011) configuration */ +#define CONFIG_PL011_SERIAL +#define CONFIG_CONS_INDEX 1 +#define CONFIG_BAUDRATE 115200 +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } +#define CFG_SERIAL0 0x101FD000 +#define CFG_SERIAL1 0x101FB000 + +#define CONFIG_PL01x_PORTS { (void *)CFG_SERIAL0, (void *)CFG_SERIAL1 } +#define CONFIG_PL011_CLOCK 48000000 + +/* Ethernet */ +#define PCI_MEMORY_VADDR 0xe8000000 +#define PCI_IO_VADDR 0xee000000 +#define __io(a) ((void __iomem *)(PCI_IO_VADDR + (a))) +#define __mem_isa(a) ((a) + PCI_MEMORY_VADDR) + +#define CONFIG_DRIVER_SMC91111 /* Using SMC91c111*/ +#define CONFIG_SMC91111_BASE 0x34000300 +#undef CONFIG_SMC91111_EXT_PHY /* Internal PHY */ +#define CONFIG_SMC_USE_32_BIT +#define CONFIG_BOOTFILE "uImage" + +/* flash memory and filesystem information */ +#define CONFIG_DOS_PARTITION +#define CONFIG_MTD_ONENAND_VERIFY_WRITE +#define CONFIG_SYS_ONENAND_BASE 0x30000000 +#define CONFIG_SYS_MAX_NAND_DEVICE 1 +#define CONFIG_SYS_NAND_BASE 0x40000000 + +#define CONFIG_SYS_NO_FLASH + +#ifdef CONFIG_BOOT_ONENAND + +# undef CONFIG_CMD_NAND /* Temporary: nand and onenand can't coexist */ + /* Partition Size Start + * XloaderTOC + X-Loader 256KB 0x00000000 + * Memory init function 256KB 0x00040000 + * U-Boot 2MB 0x00080000 + * Sysimage (kernel + ramdisk) 4MB 0x00280000 + * JFFS2 Root filesystem 22MB 0x00680000 + * JFFS2 User Data 227.5MB 0x01C80000 + */ +# define CONFIG_JFFS2_PART_SIZE 0x400000 +# define CONFIG_JFFS2_PART_OFFSET 0x280000 + +# define CONFIG_ENV_IS_IN_ONENAND +# define CONFIG_ENV_SIZE (256*1024) +# define CONFIG_ENV_ADDR 0x30300000 + +#else /* ! CONFIG_BOOT_ONENAND */ + +# undef CONFIG_CMD_ONENAND /* Temporary: nand and onenand can't coexist */ + +# define CONFIG_JFFS2_DEV "nand0" +# define CONFIG_JFFS2_NAND 1 /* For the jffs2 support*/ +# define CONFIG_JFFS2_PART_SIZE 0x00300000 +# define CONFIG_JFFS2_PART_OFFSET 0x00280000 + +# define CONFIG_ENV_IS_IN_NAND +# define CONFIG_ENV_SIZE 0x20000 /*128 Kb*/ +# define CONFIG_ENV_OFFSET (0x8000000 - 0x20000) + +#endif /* CONFIG_BOOT_ONENAND */ + +/* Temporarily, until we have no driver, env is not in nand */ +#undef CONFIG_ENV_IS_IN_NAND +#define CONFIG_ENV_IS_NOWHERE + +/* this is needed to make hello_world.c and other stuff happy */ +#define CONFIG_SYS_MAX_FLASH_SECT 512 +#define CONFIG_SYS_MAX_FLASH_BANKS 1 + +/* base addresses of our peripherals */ +#define NOMADIK_SRC_BASE 0x101E0000 /* System and Reset Cnt */ +#define NOMADIK_PMU_BASE 0x101E9000 /* Power Management Unit */ +#define NOMADIK_MPMC_BASE 0x10110000 /* SDRAM Controller */ +#define NOMADIK_FSMC_BASE 0x10100000 /* FSMC Controller */ +#define NOMADIK_1NAND_BASE 0x30000000 +#define NOMADIK_GPIO0_BASE 0x101E4000 +#define NOMADIK_GPIO1_BASE 0x101E5000 +#define NOMADIK_GPIO2_BASE 0x101E6000 +#define NOMADIK_GPIO3_BASE 0x101E7000 +#define NOMADIK_CPLD_BASE 0x36000000 +#define NOMADIK_UART0_BASE 0x101FD000 +#define NOMADIK_UART1_BASE 0x101FB000 +#define NOMADIK_UART2_BASE 0x101F2000 + +#define NOMADIK_I2C1_BASE 0x101F7000 /* I2C1 interface */ +#define NOMADIK_I2C0_BASE 0x101F8000 /* I2C0 interface */ + +#define NOMADIK_RTC_BASE 0x101E8000 +#define NOMADIK_ETH0_BASE 0x36800300 +#define NOMADIK_CPLD_UART_BASE 0x36480000 + +#endif /* __CONFIG_H */