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Diffstat (limited to 'c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c b/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c new file mode 100644 index 0000000000..a914ded36b --- /dev/null +++ b/c/src/lib/libbsp/powerpc/score603e/startup/bspstart.c @@ -0,0 +1,299 @@ +/* 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 <bsp.h> +#include <rtems/libio.h> + +#include <libcsupport.h> + +#include <string.h> + +/* + * 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 = 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 = 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) +{ + + 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 +} + |