/* bspstart.c * * This set of routines starts the application. It includes application, * board, and monitor specific initialization and configuration. * The generic CPU dependent initialization has been performed * before any of these are invoked. * * COPYRIGHT (c) 1989-1997. * On-Line Applications Research Corporation (OAR). * Copyright assigned to U.S. Government, 1994. * * The license and distribution terms for this file may in * the file LICENSE in this distribution or at * http://www.OARcorp.com/rtems/license.html. * * $Id: */ #include #include #include #include /* * The original 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; rtems_unsigned32 bsp_isr_level; /* * Use the shared implementations of the following routines */ void bsp_postdriver_hook(void); void bsp_libc_init( void *, unsigned32, int ); /*PAGE * * bsp_pretasking_hook * * BSP pretasking hook. Called just before drivers are initialized. * Used to setup libc and install any BSP extensions. */ void bsp_pretasking_hook(void) { extern int end; rtems_unsigned32 heap_start; rtems_unsigned32 heap_size; heap_start = (rtems_unsigned32) &end; if (heap_start & (CPU_ALIGNMENT-1)) heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); heap_size = BSP_Configuration.work_space_start - (void *)&end; heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ bsp_libc_init((void *) heap_start, heap_size, 0); #ifdef RTEMS_DEBUG rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); #endif } /*PAGE * * bsp_predriver_hook * * Before drivers are setup initialize interupt vectors. */ void init_RTC(); void initialize_PMC(); void bsp_predriver_hook(void) { init_RTC(); init_PCI(); initialize_universe(); initialize_PCI_bridge (); #if (HAS_PMC_PSC8) initialize_PMC(); #endif /* * Initialize Bsp General purpose vector table. */ initialize_external_exception_vector(); #if (0) /* * XXX - Modify this to write a 48000000 (loop to self) command * to each interrupt location. This is better for debug. */ bsp_spurious_initialize(); #endif } /*PAGE * * initialize_PMC */ void initialize_PMC() { volatile rtems_unsigned32 *PMC_addr; rtems_unsigned8 data; #if (0) /* First Values sent */ /* * set PMC base address. */ PMC_addr = SCORE603E_PCI_DEVICE_ADDRESS( 0x14 ); *PMC_addr = (SCORE603E_PCI_REGISTER_BASE >> 24) & 0x3f; /* * Clear status, enable SERR and memory space only. */ PMC_addr = SCORE603E_PCI_DEVICE_ADDRESS( 0x4 ); *PMC_addr = 0x0201ff37; /* * Bit 0 and 1 HI cause Medium Loopback to occur. */ PMC_addr = (volatile rtems_unsigned32 *) SCORE603E_PMC_SERIAL_ADDRESS( 0x100000 ); data = *PMC_addr; /* *PMC_addr = data | 0x3; */ *PMC_addr = data & 0xfc; #endif #if (1) /* * Clear status, enable SERR and memory space only. */ PMC_addr = SCORE603E_PCI_DEVICE_ADDRESS( 0x4 ); *PMC_addr = 0x020080cc; /* * set PMC base address. */ PMC_addr = SCORE603E_PCI_DEVICE_ADDRESS( 0x14 ); *PMC_addr = (SCORE603E_PCI_REGISTER_BASE >> 24) & 0x3f; PMC_addr = (volatile rtems_unsigned32 *) SCORE603E_PMC_SERIAL_ADDRESS( 0x100000 ); data = *PMC_addr; *PMC_addr = data & 0xfc; #endif } /*PAGE * * SCORE603e_bsp_postdriver_hook * * Standard post driver hook plus some BSP specific stuff. */ void SCORE603e_bsp_postdriver_hook(void) { extern void Init_EE_mask_init(void); bsp_postdriver_hook(); Init_EE_mask_init(); } void bsp_set_trap_vectors( void ); /*PAGE * * bsp_start * * This routine does the bulk of the system initialization. */ void bsp_start( void ) { unsigned char *work_space_start; unsigned int msr_value = 0x0000; volatile rtems_unsigned32 *ptr; delay( 1000 ); /* * Zero out lots of memory */ memset( &end, 0, (unsigned char *)&RAM_END - (unsigned char *) &end ); /* * There are multiple ROM monitors available for this board. */ #if (SCORE603E_USE_SDS) /* * Write instruction for Unconditional Branch to ROM vector. */ Code = 0x4bf00002; for (Address = 0x100; Address <= 0xe00; Address += 0x100) { A_Vector = (unsigned32 *)Address; Code = 0x4bf00002 + Address; *A_Vector = Code; } for (Address = 0x1000; Address <= 0x1400; Address += 0x100) { A_Vector = (unsigned32 *)Address; Code = 0x4bf00002 + Address; *A_Vector = Code; } Cpu_table.exceptions_in_RAM = TRUE; msr_value = 0x2030; #elif (SCORE603E_USE_OPEN_FIRMWARE) Cpu_table.exceptions_in_RAM = TRUE; msr_value = 0x2030; #elif (SCORE603E_USE_NONE) Cpu_table.exceptions_in_RAM = TRUE; msr_value = 0x2030; _CPU_MSR_SET( msr_value ); bsp_set_trap_vectors(); #elif (SCORE603E_USE_DINK) Cpu_table.exceptions_in_RAM = TRUE; msr_value = 0x2030; _CPU_MSR_SET( msr_value ); /* * Override the DINK error on a Decrementor interrupt. */ /* org dec_vector - rfi */ ptr = (rtems_unsigned32 *)0x900; *ptr = 0x4c000064; #else #error "SCORE603E BSPSTART.C -- what ROM monitor are you using" #endif _CPU_MSR_SET( msr_value ); /* * Need to "allocate" the memory for the RTEMS Workspace and * tell the RTEMS configuration where it is. This memory is * not malloc'ed. It is just "pulled from the air". */ work_space_start = (unsigned char *)&RAM_END - BSP_Configuration.work_space_size; if ( work_space_start <= (unsigned char *)&end ) { DEBUG_puts( "bspstart: Not enough RAM!!!\n" ); bsp_cleanup(); } BSP_Configuration.work_space_start = work_space_start; /* * Account for the console's resources */ console_reserve_resources( &BSP_Configuration ); /* * initialize the CPU table for this BSP */ /* Cpu_table.exceptions_in_RAM was set above */ Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ Cpu_table.predriver_hook = bsp_predriver_hook; /* Init vectors */ Cpu_table.postdriver_hook = SCORE603e_bsp_postdriver_hook; Cpu_table.clicks_per_usec = 66 / 4; /* XXX get from linkcmds */ Cpu_table.do_zero_of_workspace = TRUE; Cpu_table.interrupt_stack_size = (12 * 1024); Cpu_table.idle_task_stack_size = (3 * STACK_MINIMUM_SIZE); #if ( PPC_USE_DATA_CACHE ) instruction_cache_enable (); data_cache_enable (); #endif }