diff options
author | Ralf Corsepius <ralf.corsepius@rtems.org> | 2007-04-25 13:13:54 +0000 |
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committer | Ralf Corsepius <ralf.corsepius@rtems.org> | 2007-04-25 13:13:54 +0000 |
commit | 4f181b36cff3d0a9c350b223dd0cf9fc1301bab6 (patch) | |
tree | 283ed829b5c85bf8ad2ca8091a26175fec053aec /c/src/lib | |
parent | 2007-04-25 Ralf Corsépius <ralf.corsepius@rtems.org> (diff) | |
download | rtems-4f181b36cff3d0a9c350b223dd0cf9fc1301bab6.tar.bz2 |
2007-04-25 Ray Xu <xr@trasin.net>
* include/tm27.h, startup/bspstart.c, startup/exit.c,
startup/linkcmds: New (Initial submission).
Diffstat (limited to '')
-rw-r--r-- | c/src/lib/libbsp/arm/rtl22xx/ChangeLog | 2 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/rtl22xx/include/tm27.h | 32 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/rtl22xx/startup/bspstart.c | 284 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/rtl22xx/startup/exit.c | 40 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/rtl22xx/startup/linkcmds | 239 |
5 files changed, 597 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/rtl22xx/ChangeLog b/c/src/lib/libbsp/arm/rtl22xx/ChangeLog index c36a3074fc..3d3f2229f0 100644 --- a/c/src/lib/libbsp/arm/rtl22xx/ChangeLog +++ b/c/src/lib/libbsp/arm/rtl22xx/ChangeLog @@ -5,6 +5,8 @@ 2007-04-25 Ray Xu <xr@trasin.net> + * include/tm27.h, startup/bspstart.c, startup/exit.c, + startup/linkcmds: New (Initial submission). * Makefile.am, README, bsp_specs, configure.ac, console/lpc22xx_uart.h, console/uart.c, include/bsp.h, network/network.c: New (Initial submission). diff --git a/c/src/lib/libbsp/arm/rtl22xx/include/tm27.h b/c/src/lib/libbsp/arm/rtl22xx/include/tm27.h new file mode 100644 index 0000000000..b417668d83 --- /dev/null +++ b/c/src/lib/libbsp/arm/rtl22xx/include/tm27.h @@ -0,0 +1,32 @@ +/* + * tm27.h + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#ifndef _RTEMS_TMTEST27 +#error "This is an RTEMS internal file you must not include directly." +#endif + +#ifndef __tm27_h +#define __tm27_h + +/* + * Define the interrupt mechanism for Time Test 27 + */ + +#define MUST_WAIT_FOR_INTERRUPT 0 + +#define Install_tm27_vector( handler ) /* empty */ + +#define Cause_tm27_intr() /* empty */ + +#define Clear_tm27_intr() /* empty */ + +#define Lower_tm27_intr() /* empty */ + +#endif diff --git a/c/src/lib/libbsp/arm/rtl22xx/startup/bspstart.c b/c/src/lib/libbsp/arm/rtl22xx/startup/bspstart.c new file mode 100644 index 0000000000..ef5877a604 --- /dev/null +++ b/c/src/lib/libbsp/arm/rtl22xx/startup/bspstart.c @@ -0,0 +1,284 @@ +/*
+ * LPC22XX Startup code
+ *
+ * Copyright (c) 2005 by Ray X <rayx.cn@gmail.com>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ *
+ * http://www.rtems.com/license/LICENSE.
+ *
+ *
+ * $Id$
+*/
+
+#include <bsp.h>
+#include <rtems/libcsupport.h>
+#include <rtems/libio.h>
+#include <lpc22xx.h>
+
+
+/*************************************************************/
+/* Macros */
+/*************************************************************/
+
+/*************************************************************/
+/* Data Structures */
+/*************************************************************/
+
+/*************************************************************/
+/* Global Variables */
+/*************************************************************/
+/*FIX ME:we do not have SDRAM, but can I define mutiple SRAM?*/
+
+extern void *_flash_size;
+extern void *_flash_base;
+extern void *_sdram_size;
+extern void *_sdram_base;
+extern void *_bss_free_start;
+extern void *_bss_start_;
+extern void *_bss_end_;
+
+
+unsigned long free_mem_start;
+unsigned long free_mem_end;
+
+/* The original BSP configuration table from the application and our copy of it
+ with some changes. */
+
+extern rtems_configuration_table Configuration;
+rtems_configuration_table BSP_Configuration;
+
+rtems_cpu_table Cpu_table; /* CPU configuration table. */
+char *rtems_progname; /* Program name - from main(). */
+
+/*************************************************************/
+/* Function prototypes */
+/*************************************************************/
+extern void rtems_irq_mngt_init(void);
+void bsp_libc_init( void *, uint32_t, int );
+void bsp_postdriver_hook(void);
+extern void UART0_Ini(void);
+extern void printi(unsigned long);
+extern void debug_printk(char*);
+/**************************************************************************/
+/* */
+/* NAME: bps_pretasking_hook - Function to setup system before startup */
+/* */
+/* DESCRIPTION: */
+/* This function is called before drivers are initialized and used */
+/* to setup libc and BSP extensions. It configures non cacheable */
+/* SDRAM, SRAM, AIM, and ADM regions and sets up the CPU's memory */
+/* protection unit. */
+/* */
+/* GLOBALS USED: */
+/* free_mem_start */
+/* free_mem_end */
+/* */
+/* RESTRICTIONS/LIMITATIONS: */
+/* Since this function is setting up libc, it cannot use and libc */
+/* functions. */
+/* */
+/**************************************************************************/
+void bsp_pretasking_hook(void)
+{
+ uint32_t heap_start;
+ uint32_t heap_size;
+
+ /*
+ * Set up the heap. It uses all free SDRAM except that reserved
+ * for non-cached uses.
+ */
+ heap_start = free_mem_start;
+
+ /* heap_size = (free_mem_end - heap_start - MEM_NOCACHE_SIZE); */
+ /*the board seems to have only 512K memory, we use 256K as heap*/
+ heap_size = 0x40000;
+
+ bsp_libc_init((void *)heap_start, heap_size, 0);
+
+#ifdef RTEMS_DEBUG
+
+ rtems_debug_enable(RTEMS_DEBUG_ALL_MASK);
+
+#endif /* RTEMS_DEBUG */
+
+} /* bsp_pretasking_hook */
+
+/**************************************************************************/
+/* */
+/* NAME: bsp_start_default - BSP initialization function */
+/* */
+/* DESCRIPTION: */
+/* This function is called before RTEMS is initialized and used */
+/* adjust the kernel's configuration. */
+/* */
+/* This function also configures the CPU's memory protection unit. */
+/* */
+/* GLOBALS USED: */
+/* CPU_table */
+/* BSP_Configuration */
+/* free_mem_start */
+/* free_mem_end */
+/* free_mem_nocache_start */
+/* _bss_free_start */
+/* mpu_region_tbl */
+/* */
+/* */
+/* */
+/* */
+/* RESTRICTIONS/LIMITATIONS: */
+/* Since RTEMS is not configured, no RTEMS functions can be called. */
+/* */
+/**************************************************************************/
+void bsp_start_default( void )
+{
+ uint32_t i;
+ PINSEL2 =0x0f814914;
+ BCFG0 = 0x1000ffef;
+ BCFG1 = 0x1000ffef;
+
+ MEMMAP = 0x2; //debug and excute outside chip
+
+ PLLCON = 1;
+#if (Fpclk / (Fcclk / 4)) == 1
+ VPBDIV = 0;
+#endif
+#if (Fpclk / (Fcclk / 4)) == 2
+ VPBDIV = 2;
+#endif
+#if (Fpclk / (Fcclk / 4)) == 4
+ VPBDIV = 1;
+#endif
+
+#if (Fcco / Fcclk) == 2
+ PLLCFG = ((Fcclk / Fosc) - 1) | (0 << 5);
+#endif
+#if (Fcco / Fcclk) == 4
+ PLLCFG = ((Fcclk / Fosc) - 1) | (1 << 5);
+#endif
+#if (Fcco / Fcclk) == 8
+ PLLCFG = ((Fcclk / Fosc) - 1) | (2 << 5);
+#endif
+#if (Fcco / Fcclk) == 16
+ PLLCFG = ((Fcclk / Fosc) - 1) | (3 << 5);
+#endif
+ PLLFEED = 0xaa;
+ PLLFEED = 0x55;
+ while((PLLSTAT & (1 << 10)) == 0);
+ PLLCON = 3;
+ PLLFEED = 0xaa;
+ PLLFEED = 0x55;
+
+ /* memory configure */
+ //MAMCR = 0;
+ // MAMTIM = 3;
+ //MAMCR = 2;
+
+ /* init VIC */
+ VICIntEnClr = 0xffffffff;
+ VICVectAddr = 0;
+ VICIntSelect = 0;
+
+ /* disable interrupts */
+ /* Setup interrupt controller.*/
+ VICProtection = 0;
+
+
+ Cpu_table.pretasking_hook = bsp_pretasking_hook;
+ Cpu_table.postdriver_hook = bsp_postdriver_hook;
+ Cpu_table.do_zero_of_workspace = TRUE;
+ BSP_Configuration.microseconds_per_tick=100000;
+ /* Place RTEMS workspace at beginning of free memory. */
+ BSP_Configuration.work_space_start = (void *)&_bss_free_start;
+
+ free_mem_start = ((uint32_t)&_bss_free_start +
+ BSP_Configuration.work_space_size);
+
+ free_mem_end = ((uint32_t)&_sdram_base + (uint32_t)&_sdram_size);
+
+ UART0_Ini();
+
+ #if 0
+ debug_printk(" bsp_start_defalt");
+
+ debug_printk(" _bss_free_start");
+ printi((int)&_bss_free_start);
+
+ debug_printk(" free_mem_start");
+ printi((int)free_mem_start);
+
+ debug_printk(" _sdram_base");
+ printi((int)&_sdram_base);
+
+ debug_printk(" _sdram_size");
+ printi((int)&_sdram_size);
+
+ debug_printk(" free_mem_end");
+ printi((int)free_mem_end);
+
+
+ printi(free_mem_end);
+ #endif
+
+ /*
+ * Init rtems exceptions management
+ */
+ rtems_exception_init_mngt();
+
+ /*
+ * Init rtems interrupt management
+ */
+ rtems_irq_mngt_init();
+
+ /*
+ * The following information is very useful when debugging.
+ */
+#if 0
+
+ printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );
+ printk( "maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions );
+ printk( "microseconds_per_tick = 0x%x\n",
+ BSP_Configuration.microseconds_per_tick );
+ printk( "ticks_per_timeslice = 0x%x\n",
+ BSP_Configuration.ticks_per_timeslice );
+ printk( "maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices );
+ printk( "number_of_device_drivers = 0x%x\n",
+ BSP_Configuration.number_of_device_drivers );
+ printk( "Device_driver_table = 0x%x\n",
+ BSP_Configuration.Device_driver_table );
+
+ /* printk( "_stack_size = 0x%x\n", _stack_size );*/
+ printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start );
+ printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );
+#endif
+} /* bsp_start */
+
+
+/** + * Reset the system. + * + * This functions enables the watchdog and waits for it to + * fire, thus resetting the system. + */ +/** + * Reset the system. + * + * This functions enables the watchdog and waits for it to + * fire, thus resetting the system. + */ +void bsp_reset(void) +{ + rtems_interrupt_level level; + + _CPU_ISR_Disable(level); + + while(1);
+} +
+/*
+ * By making this a weak alias for bsp_start_default, a brave soul
+ * can override the actual bsp_start routine used.
+ */
+
+void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));
diff --git a/c/src/lib/libbsp/arm/rtl22xx/startup/exit.c b/c/src/lib/libbsp/arm/rtl22xx/startup/exit.c new file mode 100644 index 0000000000..4e357dcf17 --- /dev/null +++ b/c/src/lib/libbsp/arm/rtl22xx/startup/exit.c @@ -0,0 +1,40 @@ +/* + * Cirrus LPC22XX BSP Shutdown code + * + * Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.rtems.com/license/LICENSE. + * + * + * $Id$ +*/ + +#include <stdio.h> +#include <bsp.h> +#include <rtems/bspIo.h> +#include <rtems/libio.h> + +int uart_poll_read(int); + +void rtemsReboot (void) +{ + asm volatile ("b _start"); +} + +void bsp_cleanup(void) +{ + static char line[]="\nEXECUTIVE SHUTDOWN! Any key to reboot..."; + /* + * AT this point, the console driver is disconnected => we must + * use polled output/input. This is exactly what printk + * does. + */ + printk("\n"); + printk(line); + while (uart_poll_read(0) < 0) continue; + + /* rtemsReboot(); */ +} diff --git a/c/src/lib/libbsp/arm/rtl22xx/startup/linkcmds b/c/src/lib/libbsp/arm/rtl22xx/startup/linkcmds new file mode 100644 index 0000000000..a9445ba7e2 --- /dev/null +++ b/c/src/lib/libbsp/arm/rtl22xx/startup/linkcmds @@ -0,0 +1,239 @@ +/* + * Philips lpc ARM linker script + * By Ray,Xu + * Rayx.cn@gmail.com + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.rtems.com/license/LICENSE. + * + * + * $Id$ + * LPC22xx ARM do not have a +*/ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", + "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) + + +MEMORY { + sdram : ORIGIN = 0x81000000, LENGTH = 512K + sram : ORIGIN = 0x40000000, LENGTH = 16K + regs : ORIGIN = 0xe0000000, LENGTH = 2M +} + +/* + * Declare some sizes. + */ + +_sdram_base = DEFINED(_sdram_base) ? _sdram_base : 0x81000000; +_sdram_size = DEFINED(_sdram_size) ? _sdram_size : 512K; + + +_irq_stack_size = DEFINED(_irq_stack_size) ? _irq_stack_size : 0x100; +_fiq_stack_size = DEFINED(_fiq_stack_size) ? _fiq_stack_size : 0x50; +_abt_stack_size = DEFINED(_abt_stack_size) ? _abt_stack_size : 0x50; +_svc_stack_size = DEFINED(_svc_stack_size) ? _svc_stack_size : 0x2000; + + + +/* Do we need any of these for elf? + __DYNAMIC = 0; */ + +SECTIONS +{ + .base : + { + _sram_base = .; + arm_exception_table = .; + + arm_reset_vect = .; /* 0x00 */ + . += 4; + + arm_undef_vect = .; /* 0x04 */ + . += 4; + + arm_swi_vect = .; /* 0x08 */ + . += 4; + + arm_iabrt_vect = .; /* 0x0c */ + . += 4; + + arm_dabrt_vect = .; /* 0x10 */ + . += 4; + + /* no vector here */ + . += 4; + + arm_irq_vect = .; /* 0x18 */ + . += 4; + + arm_fiq_vect = .; /* 0x1c */ + . += 4; + + + rtems_vector_table = .; + . += (8 * 4); /* 8 ARM interrupts */ + + /*bsp_vector_table = .;*/ + /*. += (64 * 4); 64 LPC22xx interrupts */ + + . = ALIGN (0x100); + + } > sram + + + .text : + { + _text_start = .; + CREATE_OBJECT_SYMBOLS + *(.text) + *(.text.*) + + /* + * Special FreeBSD sysctl sections. + */ + . = ALIGN (16); + __start_set_sysctl_set = .; + *(set_sysctl_*); + __stop_set_sysctl_set = ABSOLUTE(.); + *(set_domain_*); + *(set_pseudo_*); + + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.gnu.linkonce.t*) + *(.glue_7) + *(.glue_7t) + + /* I think these come from the ld docs: */ + ___CTOR_LIST__ = .; + LONG((___CTOR_END__ - ___CTOR_LIST__) / 4 - 2) + *(.ctors) + LONG(0) + ___CTOR_END__ = .; + ___DTOR_LIST__ = .; + LONG((___DTOR_END__ - ___DTOR_LIST__) / 4 - 2) + *(.dtors) + LONG(0) + ___DTOR_END__ = .; + + _etext = .; + PROVIDE (etext = .); + } > sdram + + .init : + { + KEEP (*(.init)) + } > sdram /*=0*/ + + .fini : + { + KEEP (*(.fini)) + } > sdram /*=0*/ + + .data : + { + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + *(.jcr) + SORT(CONSTRUCTORS) + _edata = .; + } > sdram + + .eh_frame : { *(.eh_frame) } > sdram + .data1 : { *(.data1) } > sdram + .eh_frame : { *(.eh_frame) } > sdram + .gcc_except_table : { *(.gcc_except_table) } > sdram + + .rodata : + { + *(.rodata) + *(.rodata.*) + *(.gnu.linkonce.r*) + } > sdram + + .bss : + { + _bss_start_ = .; + _clear_start = .; + *(.bss) + *(.bss.*) + *(.gnu.linkonce.b.*) + *(COMMON) + . = ALIGN(256); + _clear_end = .; + + . = ALIGN (64); + _abt_stack = .; + . += _abt_stack_size; + + . = ALIGN (256); + _irq_stack = .; + . += _irq_stack_size; + + . = ALIGN (64); + _fiq_stack = .; + . += _fiq_stack_size; + + . = ALIGN (64); + _svc_stack = .; + . += _svc_stack_size; + + _bss_end_ = .; + _end = .; + __end = .; + + _bss_free_start = .; + . = ALIGN (1024); + } > sdram + +/* + .regs : + { + lpc22xx_regs_base = .; + lpc22xx_regs = .; + . += 8192; + } > regs +*/ + + +/* Debugging stuff follows? */ + + /* Stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to the beginning + of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + + /*.stack 0x80000 : { _stack = .; *(.stack) }*/ + /* These must appear regardless of . */ +} + |