2004-07-15 Jay Monkman

	* .cvsignore, ChangeLog, Makefile.am, README, bsp_specs, configure.ac,
	times, console/uarts.c, include/.cvsignore, include/bsp.h,
	include/tm27.h, network/.cvsignore, network/network.c,
	start/.cvsignore, start/start.S, startup/.cvsignore,
	startup/bspstart.c, startup/exit.c, startup/linkcmds,
	startup/memmap.c: New files.

5 files changed, 513 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/csb337/startup/.cvsignore b/c/src/lib/libbsp/arm/csb337/startup/.cvsignore
new file mode 100644
index 0000000000..d29e5050f5
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb337/startup/.cvsignore
@@ -0,0 +1,14 @@
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+config.cache
+config.guess
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+missing
+mkinstalldirs
diff --git a/c/src/lib/libbsp/arm/csb337/startup/bspstart.c b/c/src/lib/libbsp/arm/csb337/startup/bspstart.c
new file mode 100644
index 0000000000..fc53971e54
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb337/startup/bspstart.c
@@ -0,0 +1,206 @@
+/*
+ * Cogent CSB337 - AT91RM9200 Startup code
+ *
+ * Copyright (c) 2004 by Cogent Computer Systems
+ * Written by Jay Monkman <jtm@lopingdog.com>
+ *	
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *
+ *  $Id$
+*/
+#include <bsp.h>
+#include <rtems/libcsupport.h>
+#include <rtems/libio.h>
+#include <at91rm9200.h>
+#include <at91rm9200_pmc.h>
+#include <at91rm9200_emac.h>
+
+/* Global Variables */
+extern void            *_flash_size;
+extern void            *_flash_base;
+extern void            *_sdram_size;
+extern void            *_sdram_base;
+extern void            *_bss_free_start;
+
+unsigned long           free_mem_start;
+unsigned long           free_mem_end;
+
+rtems_configuration_table  BSP_Configuration;  
+rtems_cpu_table Cpu_table;
+char            *rtems_progname = "RTEMS";
+
+/* Function prototypes */
+extern void rtems_irq_mngt_init(void);
+void bsp_libc_init( void *, unsigned32, int );
+void bsp_postdriver_hook(void);
+static void fix_mac_addr();
+
+/**************************************************************************/
+/*                                                                        */
+/* NAME: bsp_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.                                    */
+/*                                                                        */
+/* RESTRICTIONS/LIMITATIONS:                                              */
+/*   Since this function is setting up libc, it cannot use and libc       */
+/*   functions.                                                           */
+/*                                                                        */
+/**************************************************************************/
+void bsp_pretasking_hook(void)
+{
+    unsigned32 heap_start;
+    unsigned32 heap_size;
+
+    /* 
+     * Set up the heap. 
+     */
+    heap_start =  free_mem_start;
+    heap_size = free_mem_end - free_mem_start;
+
+    /* call rtems lib init - malloc stuff */
+    bsp_libc_init((void *)heap_start, heap_size, 0);
+
+#ifdef RTEMS_DEBUG
+
+    rtems_debug_enable(RTEMS_DEBUG_ALL_MASK);
+
+#endif /* RTEMS_DEBUG */
+
+} 
+ 
+
+/**************************************************************************/
+/*                                                                        */
+/* 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.      */
+/*                                                                        */
+/* RESTRICTIONS/LIMITATIONS:                                              */
+/*   Since RTEMS is not configured, no RTEMS functions can be called.     */
+/*                                                                        */
+/**************************************************************************/
+void bsp_start_default( void )
+{
+    /* disable interrupts */
+    AIC_CTL_REG(AIC_IDCR) = 0xffffffff;
+
+    /* 
+     * Some versions of the bootloader have the MAC address
+     * reversed. This fixes it, if necessary.
+     */
+    fix_mac_addr();
+
+    /* tell RTEMS about the hooks we are using */
+    Cpu_table.pretasking_hook        = bsp_pretasking_hook;
+    Cpu_table.postdriver_hook        = bsp_postdriver_hook;
+    
+    /* tell RTEMS to clear the workspace */
+    Cpu_table.do_zero_of_workspace   = TRUE;
+    
+    /* Place RTEMS workspace at beginning of free memory. */
+    BSP_Configuration.work_space_start = (void *)&_bss_free_start;
+    
+    free_mem_start = ((unsigned32)&_bss_free_start + 
+                      BSP_Configuration.work_space_size);
+    
+    free_mem_end = ((unsigned32)&_sdram_base + (unsigned32)&_sdram_size);
+    
+    
+    /*
+     * 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\r", 
+            BSP_Configuration.work_space_size );
+    printk( "maximum_extensions = 0x%x\n\r", 
+            BSP_Configuration.maximum_extensions );
+    printk( "microseconds_per_tick = 0x%x\n\r",
+            BSP_Configuration.microseconds_per_tick );
+    printk( "ticks_per_timeslice = 0x%x\n\r",
+            BSP_Configuration.ticks_per_timeslice );
+    printk( "maximum_devices = 0x%x\n\r", 
+            BSP_Configuration.maximum_devices );
+    printk( "number_of_device_drivers = 0x%x\n\r",
+            BSP_Configuration.number_of_device_drivers );
+    printk( "Device_driver_table = 0x%x\n\r",
+            BSP_Configuration.Device_driver_table );
+    printk( "work_space_start = 0x%x\n\r", 
+            BSP_Configuration.work_space_start );
+    printk( "work_space_size = 0x%x\n\r", 
+            BSP_Configuration.work_space_size );
+#endif
+} /* bsp_start */
+
+/* 
+ * Some versions of the bootloader shipped with the CSB337
+ * reverse the MAC address. This function tests for that,
+ * and fixes the MAC address.
+ */
+static void fix_mac_addr()
+{
+    uint8_t addr[6];
+
+    /* Read the MAC address */
+    addr[0] = (EMAC_REG(EMAC_SA1L) >>  0) & 0xff;
+    addr[1] = (EMAC_REG(EMAC_SA1L) >>  8) & 0xff;
+    addr[2] = (EMAC_REG(EMAC_SA1L) >> 16) & 0xff;
+    addr[3] = (EMAC_REG(EMAC_SA1L) >> 24) & 0xff;
+    addr[4] = (EMAC_REG(EMAC_SA1H) >>  0) & 0xff;
+    addr[5] = (EMAC_REG(EMAC_SA1H) >>  8) & 0xff;
+
+    /* Check which 3 bytes have Cogent's OUI */
+    if ((addr[5] == 0x00) && (addr[4] == 0x23) && (addr[3] == 0x31)) {
+        EMAC_REG(EMAC_SA1L) = ((addr[5] <<  0) |
+                               (addr[4] <<  8) |
+                               (addr[3] << 16) |
+                               (addr[2] << 24));
+
+        EMAC_REG(EMAC_SA1H) = ((addr[1] <<  0) |
+                               (addr[0] <<  8));
+    }
+}
+
+
+/*
+ *  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")));
+
+/**
+ *  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);
+
+    /* Enable the watchdog timer, then wait for the world to end. */
+    ST_REG(ST_WDMR) = ST_WDMR_RSTEN | 1;
+
+    while(1);
+}
diff --git a/c/src/lib/libbsp/arm/csb337/startup/exit.c b/c/src/lib/libbsp/arm/csb337/startup/exit.c
new file mode 100644
index 0000000000..baf70bd88d
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb337/startup/exit.c
@@ -0,0 +1,37 @@
+/*
+ * Cogent CSB337 Shutdown  code
+ *
+ * Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com>
+ *	
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *
+ *  $Id$
+*/
+#include <stdio.h>
+#include <bsp.h>
+#include <rtems/bspIo.h>
+#include <rtems/libio.h>
+
+int dbgu_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 (dbgu_poll_read(0) < 0) continue;
+}
diff --git a/c/src/lib/libbsp/arm/csb337/startup/linkcmds b/c/src/lib/libbsp/arm/csb337/startup/linkcmds
new file mode 100644
index 0000000000..cf45e1869b
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb337/startup/linkcmds
@@ -0,0 +1,227 @@
+/*
+ * Cogent CSB337 Linker script
+ *
+ * Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com>
+ *	
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *
+ *  $Id$
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
+	      "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+
+MEMORY
+{
+	sdram : ORIGIN = 0x20100000, LENGTH = 15M
+	sram  : ORIGIN = 0x00200000, LENGTH = 16K
+}
+
+/*
+ * Declare some sizes.
+ */
+_sdram_base = DEFINED(_sdram_base) ? _sdram_base : 0x20100000;
+_sdram_size = DEFINED(_sdram_size) ? _sdram_size : 15M;
+
+
+_sram_base = DEFINED(_sram_base) ? _sram_base : 0x00000000;
+_sram_size = DEFINED(_sram_size) ? _sram_size : 16K;
+
+_irq_stack_size = DEFINED(_irq_stack_size) ? _irq_stack_size : 0x1000;
+_fiq_stack_size = DEFINED(_fiq_stack_size) ? _fiq_stack_size : 0x400;
+_abt_stack_size = DEFINED(_abt_stack_size) ? _abt_stack_size : 0x100;
+_svc_stack_size = DEFINED(_svc_stack_size) ? _svc_stack_size : 0x1000;
+
+
+
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+
+SECTIONS
+{
+    .base :
+    {
+        _sram_base = .;
+
+	/* reserve room for the vectors and function pointers */
+	arm_exception_table = .;    
+	. += 64;
+
+	/* 256 byte aligned rx buffer header array */
+	. = ALIGN (0x100);
+	at91rm9200_emac_rxbuf_hdrs = .;	
+
+	/* 1 transmit buffer, 0x600 size */
+	. += (0x100);
+	at91rm9200_emac_txbuf = .;
+	. += (0x600);
+
+	/* 4 receive buffers, 0x600 each */
+	at91rm9200_emac_rxbufs = .;
+	. += (0x600 * 8);
+
+    } > sram
+
+    .init          : 
+    { 
+        KEEP (*(.init))
+    } > sdram   /*=0*/
+
+    .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  
+
+    .fini      :
+    {
+        KEEP (*(.fini))
+    } > sdram  /*=0*/
+
+    .data :
+    { 
+        *(.data)
+        *(.data.*)
+        *(.gnu.linkonce.d*)
+        *(.jcr)
+        SORT(CONSTRUCTORS)
+        _edata = .;
+    } > sdram 
+
+    .eh_frame : { *(.eh_frame) } > RAM
+    .data1   : { *(.data1) } > RAM
+    .eh_frame : { *(.eh_frame) } > RAM
+    .gcc_except_table : { *(.gcc_except_table) } > RAM
+
+    .rodata :
+    {
+      *(.rodata)
+      *(.rodata.*)
+      *(.gnu.linkonce.r*)
+    } > sdram
+
+    .bss       :
+    {
+	_bss_start_ = .;
+	_clear_start = .;
+	*(.bss)
+	*(.bss.*)
+	*(COMMON)
+	. = ALIGN(64);
+	_clear_end = .;
+
+	. = ALIGN (256);
+	_abt_stack = .;
+	. += _abt_stack_size;
+
+	. = ALIGN (256);
+	_irq_stack = .;
+	. += _irq_stack_size;
+
+	. = ALIGN (256);
+	_fiq_stack = .;
+	. += _fiq_stack_size;
+
+	. = ALIGN (256);
+	_svc_stack = .;
+	. += _svc_stack_size;
+
+	_bss_end_ = .;
+	_end = .;
+	__end = .;
+
+/* 
+ * Ideally, the MMU's translation table would be in SRAM. But we need
+ * 16K which is the size of SRAM. If we do the mapping right, the TLB
+ * should be big enough that to hold all the translations that matter,
+ * so keeping the table in SDRAM won't be a problem.
+ */
+	. = ALIGN (16 * 1024);
+	  _ttbl_base = .;
+	  . += (16 * 1024);
+
+
+	. = ALIGN (1024);
+	_bss_free_start = .;
+
+    } > sdram
+
+
+/* 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) } 
+    /* SGI/MIPS DWARF 2 extensions */
+    .debug_weaknames 0 : { *(.debug_weaknames) }
+    .debug_funcnames 0 : { *(.debug_funcnames) }
+    .debug_typenames 0 : { *(.debug_typenames) }
+    .debug_varnames  0 : { *(.debug_varnames) } 
+/*    .stack 0x80000 : { _stack = .; *(.stack) }*/
+  /* These must appear regardless of  .  */
+}
+
diff --git a/c/src/lib/libbsp/arm/csb337/startup/memmap.c b/c/src/lib/libbsp/arm/csb337/startup/memmap.c
new file mode 100644
index 0000000000..95248af400
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb337/startup/memmap.c
@@ -0,0 +1,29 @@
+/*
+ *  CSB337 Memory Map
+ *
+ *  Copyright (c) 2004 by Cogent Computer Systems
+ *  Written by Jay Monkman <jtm@lopingdog.com>
+ *
+ *  $Id$
+ */
+#include <rtems.h>
+#include <libcpu/mmu.h>
+
+/* Remember, the ARM920 has 64 TLBs. If you have more 1MB sections than
+ * that, you'll have TLB lookups, which could hurt performance.
+ */
+mmu_sect_map_t mem_map[] = {
+/*  <phys addr>  <virt addr> <size> <flags> */
+    {0x00200000, 0x00000000,   1,    MMU_CACHE_NONE},     /* SRAM */
+    {0x00200000, 0x00200000,   1,    MMU_CACHE_NONE},     /* SRAM */
+    {0x10000000, 0x10000000,   8,    MMU_CACHE_NONE},     /* FLASH */
+    {0x20000000, 0x20000000,  32,    MMU_CACHE_WTHROUGH}, /* SDRAM */
+    {0x30000000, 0x30000000,   1,    MMU_CACHE_NONE},     /* video */
+    {0x40000000, 0x40000000,   1,    MMU_CACHE_NONE},     /* Expansion CS0 */
+    {0x50000000, 0x50000000,   1,    MMU_CACHE_NONE},     /* CF CE 1 */
+    {0x60000000, 0x60000000,   1,    MMU_CACHE_NONE},     /* CF CE 1 */
+    {0x70000000, 0x70000000,   1,    MMU_CACHE_NONE},     /* CF CE 2 */
+    {0x80000000, 0x80000000,   1,    MMU_CACHE_NONE},     /* Expansion CS0 */
+    {0xfff00000, 0xfff00000,   1,    MMU_CACHE_NONE},     /* Internal regs */
+    {0x00000000, 0x00000000,   0,    0}                   /* The end */
+};