2004-07-15 Jay Monkman

	* ChangeLog, Makefile.am, README, bsp_specs, configure.ac, times,
	console/uart.c, include/bsp.h, include/tm27.h, network/lan91c11x.c,
	network/lan91c11x.h, network/network.c, start/start.S,
	startup/bspstart.c, startup/exit.c, startup/linkcmds,
	startup/memmap.c: New files.

4 files changed, 543 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/csb336/startup/bspstart.c b/c/src/lib/libbsp/arm/csb336/startup/bspstart.c
new file mode 100644
index 0000000000..991c54177b
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb336/startup/bspstart.c
@@ -0,0 +1,233 @@
+/*
+ * Cogent CSB336 - MC9328MXL SBC 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 <mc9328mxl.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";
+
+extern void rtems_irq_mngt_init(void);
+void bsp_libc_init( void *, unsigned32, int );
+void bsp_postdriver_hook(void);
+
+/**************************************************************************/
+/*                                                                        */
+/* 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 */
+    MC9328MXL_AITC_INTENABLEL = 0;
+    MC9328MXL_AITC_INTENABLEH = 0;
+
+    /* Set interrupt priority to -1 (allow all priorities) */
+    MC9328MXL_AITC_NIMASK = 0x1f;
+
+    /* 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 by default */
+    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", 
+            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( "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 */
+
+
+
+/* Calcuate the frequency for perclk1 */
+int get_perclk1_freq(void)
+{
+    int fin;
+    int fpll;
+    int pd;
+    int mfd;
+    int mfi;
+    int mfn;
+    uint32_t reg;
+    int perclk1;
+
+    if (MC9328MXL_PLL_CSCR & MC9328MXL_PLL_CSCR_SYSSEL) {
+        /* Use external oscillator */
+        fin = BSP_OSC_FREQ;
+    } else {
+        /* Use scaled xtal freq */
+        fin = BSP_XTAL_FREQ * 512;
+    }
+
+    /* calculate the output of the system PLL */
+    reg = MC9328MXL_PLL_SPCTL0;
+    pd = ((reg & MC9328MXL_PLL_SPCTL_PD_MASK) >> 
+          MC9328MXL_PLL_SPCTL_PD_SHIFT);
+    mfd = ((reg & MC9328MXL_PLL_SPCTL_MFD_MASK) >> 
+           MC9328MXL_PLL_SPCTL_MFD_SHIFT);
+    mfi = ((reg & MC9328MXL_PLL_SPCTL_MFI_MASK) >> 
+           MC9328MXL_PLL_SPCTL_MFI_SHIFT);
+    mfn = ((reg & MC9328MXL_PLL_SPCTL_MFN_MASK) >> 
+           MC9328MXL_PLL_SPCTL_MFN_SHIFT);
+
+#if 0
+    printk("fin = %d\n", fin);
+    printk("pd = %d\n", pd);
+    printk("mfd = %d\n", mfd);
+    printk("mfi = %d\n", mfi);
+    printk("mfn = %d\n", mfn);
+    printk("(fin * mfi) / (pd + 1) = %d\n", (fin * mfi) / (pd + 1));
+    printk("(fin * mfn) / ((pd + 1) * (mfd + 1)) = %d\n",
+           (fin * mfn) / ((pd + 1) * (mfd + 1)));
+#endif
+
+    fpll = 2 * ( ((fin * mfi) / (pd + 1)) +
+                 ((fin * mfn) / ((pd + 1) * (mfd + 1))) );
+
+    /* calculate the output of the PERCLK1 divider */
+    reg = MC9328MXL_PLL_PCDR;
+    perclk1 = fpll / (1 + ((reg & MC9328MXL_PLL_PCDR_PCLK1_MASK) >>
+                           MC9328MXL_PLL_PCDR_PCLK1_SHIFT));
+
+    return perclk1;
+}
+
+/*
+ *  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.
+ */
+/**
+ *  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);
+
+    printk("\n\rI should reset here.\n\r");
+    while(1);
+}
diff --git a/c/src/lib/libbsp/arm/csb336/startup/exit.c b/c/src/lib/libbsp/arm/csb336/startup/exit.c
new file mode 100644
index 0000000000..7c546bc4bb
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb336/startup/exit.c
@@ -0,0 +1,36 @@
+/*
+ *  Cogent CSB336 Shutdown 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 <stdio.h>
+#include <bsp.h>
+#include <rtems/bspIo.h>
+#include <rtems/libio.h>
+
+int uart_poll_read(int);
+void BSP_reset();
+
+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;
+
+  bsp_reset();
+
+}
diff --git a/c/src/lib/libbsp/arm/csb336/startup/linkcmds b/c/src/lib/libbsp/arm/csb336/startup/linkcmds
new file mode 100644
index 0000000000..33020e02bc
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb336/startup/linkcmds
@@ -0,0 +1,240 @@
+/*
+ *  Cogent CSB336 Linker script
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
+	      "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+/* SEARCH_DIR(/usr/local/rtems-arm-dev-tools/arm-rtems/lib); */
+
+
+MEMORY {
+	sdram : ORIGIN = 0x08200000, LENGTH = 30M
+}
+
+/*
+ * Declare some sizes.
+ */
+
+/* The base for SDRAM is set to umon's APPRAMBASE */
+_sdram_base = DEFINED(_sdram_base) ? _sdram_base : 0x08200000;
+_sdram_size = DEFINED(_sdram_size) ? _sdram_size : 30M;
+
+
+_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 :
+  {
+    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;
+			      /* FIXME: */
+
+    rtems_vector_table = .;
+    . += (8 * 4);                     /* 8 ARM interrupts */
+	
+    bsp_vector_table = .;
+    . += (64 * 4);                    /* 64 MC9328MXL interrupts */
+
+    . = ALIGN (0x100);
+
+
+  } > sdram
+
+  .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
+ * don't have any. If we don't use more regions than TLB entries (64),
+ * the lookup will only happen once for each region.
+ */
+	. = 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/csb336/startup/memmap.c b/c/src/lib/libbsp/arm/csb336/startup/memmap.c
new file mode 100644
index 0000000000..d76b8e18e8
--- /dev/null
+++ b/c/src/lib/libbsp/arm/csb336/startup/memmap.c
@@ -0,0 +1,34 @@
+/*
+ *  CSB336 Memory Map
+ *
+ *  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 <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> */
+    {0x08200000, 0x00000000,   1,    MMU_CACHE_NONE},     /* Mirror of SDRAM */
+    {0x00100000, 0x00100000,   1,    MMU_CACHE_NONE},     /* Bootstrap ROM */
+    {0x00200000, 0x00200000,   1,    MMU_CACHE_NONE},     /* Internal Regs */
+    {0x08000000, 0x08000000,  32,    MMU_CACHE_WTHROUGH}, /* SDRAM */
+    {0x10000000, 0x10000000,   8,    MMU_CACHE_NONE},     /* CS0 - Flash */
+    {0x12000000, 0x12000000,   1,    MMU_CACHE_NONE},     /* CS1 - enet */
+    {0x13000000, 0x13000000,   1,    MMU_CACHE_NONE},     /* CS2 - */
+    {0x14000000, 0x14000000,   1,    MMU_CACHE_NONE},     /* CS3 - */
+    {0x15000000, 0x15000000,   1,    MMU_CACHE_NONE},     /* CS4 - */
+    {0x16000000, 0x16000000,   1,    MMU_CACHE_NONE},     /* CS5 - */
+    {0x50000000, 0x50000000,   1,    MMU_CACHE_NONE},     /* ARM Test Regs */
+    {0x00000000, 0x00000000,   0,    0}                   /* The end */
+};