diff options
Diffstat (limited to 'bsps/powerpc/haleakala/start/bspstart.c')
| -rw-r--r-- | bsps/powerpc/haleakala/start/bspstart.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/bsps/powerpc/haleakala/start/bspstart.c b/bsps/powerpc/haleakala/start/bspstart.c deleted file mode 100644 index 61fb376e28..0000000000 --- a/bsps/powerpc/haleakala/start/bspstart.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * This routine does the bulk of the system initialization. - */ - -/* - * Author: Thomas Doerfler <td@imd.m.isar.de> - * IMD Ingenieurbuero fuer Microcomputertechnik - * - * COPYRIGHT (c) 1998 by IMD - * - * Changes from IMD are covered by the original distributions terms. - * This file has been derived from the papyrus BSP: - * - * Author: Andrew Bray <andy@i-cubed.co.uk> - * - * COPYRIGHT (c) 1995 by i-cubed ltd. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of i-cubed limited not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * i-cubed limited makes no representations about the suitability - * of this software for any purpose. - * - * Modifications for spooling console driver and control of memory layout - * with linker command file by - * Thomas Doerfler <td@imd.m.isar.de> - * for these modifications: - * COPYRIGHT (c) 1997 by IMD, Puchheim, Germany. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies. IMD makes no representations about the suitability - * of this software for any purpose. - * - * Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c: - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * - * Modifications for PPC405GP by Dennis Ehlin - * - * Further modified for the PPC405EX Haleakala board by - * Michael Hamel ADInstruments Ltd May 2008 - */ -#include <string.h> -#include <fcntl.h> - -#include <rtems/bspIo.h> -#include <rtems/counter.h> - -#include <bsp.h> -#include <bsp/bootcard.h> -#include <bsp/uart.h> -#include <bsp/irq.h> -#include <libcpu/powerpc-utility.h> -#include <bsp/vectors.h> -#include <ppc4xx/ppc405gp.h> -#include <ppc4xx/ppc405ex.h> - -#include <stdio.h> -/* - * Driver configuration parameters - */ - -/* Expected by clock.c */ -uint32_t bsp_clicks_per_usec; - -/*-------------------- Haleakala-specific UART setup -------------------------*/ - -static void -EarlyUARTInit(int baudRate) -{ - volatile uint8_t* up = (uint8_t*)(BSP_UART_IOBASE_COM1); - int divider = BSP_UART_BAUD_BASE / baudRate; - up[LCR] = DLAB; /* Access DLM/DLL */ - up[DLL] = divider & 0x0FF; - up[DLM] = divider >> 8; - up[LCR] = CHR_8_BITS; - up[MCR] = DTR | RTS; - up[FCR] = FIFO_EN | XMIT_RESET | RCV_RESET; - up[THR] = '+'; -} - - -static void -InitUARTClock(void) -{ - uint32_t reg; - mfsdr(SDR0_UART0,reg); - reg &= ~0x008000FF; - reg |= 0x00800001; /* Ext clock, div 1 */ - mtsdr(SDR0_UART0,reg); -} - -static void GPIO_AlternateSelect(int bitnum, int source) -/* PPC405EX: select a GPIO function for the specified pin */ -{ - int shift; - unsigned long value, mask; - GPIORegisters* gpioPtr = (GPIORegisters*)(GPIOAddress); - - shift = (31 - bitnum) & 0xF; - value = (source & 3) << (shift*2); - mask = 3 << (shift*2); - if (bitnum <= 15) { - gpioPtr->OSRL = (gpioPtr->OSRL & ~mask) | value; - gpioPtr->TSRL = (gpioPtr->TSRL & ~mask) | value; - } else { - gpioPtr->OSRH = (gpioPtr->OSRH & ~mask) | value; - gpioPtr->TSRH = (gpioPtr->TSRH & ~mask) | value; - } -} - -static void Init_FPGA(void) -{ - /* Have to write to the FPGA to enable the UART drivers */ - /* Have to enable CS2 as an output in GPIO to get the FPGA working */ - mtebc(EBC0_B2CR,0xF0018000); /* Set up CS2 at 0xF0000000 */ - mtebc(EBC0_B2AP,0x9400C800); - GPIO_AlternateSelect(9,1); /* GPIO9 = PerCS2 */ - { - unsigned long *fpgaPtr = (unsigned long*)(0xF0000000); - unsigned long n; - n = *(fpgaPtr); - n &= ~0x00100; /* User LEDs on */ - n |= 0x30000; /* UART 0 and 1 transcievers on! */ - *fpgaPtr = n; - } -} - -/*===================================================================*/ - -static void -DirectUARTWrite(const char c) -{ - volatile uint8_t* up = (uint8_t*)(BSP_UART_IOBASE_COM1); - while ((up[LSR] & THRE) == 0) { ; } - up[THR] = c; -} - -/* We will provide our own printk output function as it may get used early */ -BSP_output_char_function_type BSP_output_char = DirectUARTWrite; -BSP_polling_getchar_function_type BSP_poll_char = NULL; - -uint32_t _CPU_Counter_frequency(void) -{ - return bsp_clicks_per_usec * 1000000; -} - -/*===================================================================*/ - -void bsp_start( void ) -{ - /* Get the UART clock initialized first in case we call printk */ - - InitUARTClock(); - Init_FPGA(); - EarlyUARTInit(115200); - - /* - * Get CPU identification dynamically. Note that the get_ppc_cpu_type() - * function store the result in global variables - * so that it can be used later... - */ - get_ppc_cpu_type(); - get_ppc_cpu_revision(); - - /* - * initialize the device driver parameters - */ - - /* Set globals visible to clock.c */ - /* timebase register ticks/microsecond = CPU Clk in MHz */ - bsp_clicks_per_usec = 400; - - ppc_exc_initialize(); - - /* - * Install our own set of exception vectors - */ - BSP_rtems_irq_mng_init(0); -} |