/* * MCF5206e hardware startup routines * * This is where the real hardware setup is done. A minimal stack * has been provided by the start.S code. No normal C or RTEMS * functions can be called from here. * * This initialization code based on hardware settings of dBUG * monitor. This must be changed if you like to run it immediately * after reset. * * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia * Author: Victor V. Vengerov * * Based on work: * Author: * David Fiddes, D.J@fiddes.surfaid.org * http://www.calm.hw.ac.uk/davidf/coldfire/ * * COPYRIGHT (c) 1989-1998. * On-Line Applications Research Corporation (OAR). * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * * http://www.rtems.com/license/LICENSE. * * $Id$ */ #include #include #include "mcf5206/mcf5206e.h" #define m68k_set_cacr( _cacr ) \ asm volatile ( "movec %0,%%cacr\n\t" \ "nop\n" \ : : "d" (_cacr) ) #define m68k_set_acr0( _acr0 ) \ asm volatile ( "movec %0,%%acr0\n\t" \ "nop\n\t" \ : : "d" (_acr0) ) #define m68k_set_acr1( _acr1 ) \ asm volatile ( "movec %0,%%acr1\n\t" \ "nop\n\t" \ : : "d" (_acr1) ) #define m68k_set_srambar( _rambar0 ) \ asm volatile ( "movec %0,%%rambar0\n\t" \ "nop\n\t" \ : : "d" (_rambar0) ) #define m68k_set_mbar( _mbar ) \ asm volatile ( "movec %0,%%mbar\n\t" \ "nop\n\t" \ : : "d" (_mbar) ) #define mcf5206e_enable_cache() \ m68k_set_cacr( MCF5206E_CACR_CENB ) #define mcf5206e_disable_cache() \ asm volatile ( "nop\n\t" \ "movec %0,%%cacr\n\t" \ "nop\n\t" \ "movec %0,%%cacr\n\t" \ "nop\n\t" \ : : "d" (MCF5206E_CACR_CINV) ) /* Init5206e -- * Initialize MCF5206e on-chip modules * * PARAMETERS: * none * * RETURNS: * none */ void Init5206e(void) { extern void CopyDataClearBSSAndStart(unsigned long ramsize); /* Set Module Base Address register */ m68k_set_mbar((MBAR & MCF5206E_MBAR_BA) | MCF5206E_MBAR_V); /* Set System Protection Control Register (SYPCR): * Bus Monitor Enable, Bus Monitor Timing = 1024 clocks, * Software watchdog disabled */ *MCF5206E_SYPCR(MBAR) = MCF5206E_SYPCR_BME | MCF5206E_SYPCR_BMT_1024; /* Set Pin Assignment Register (PAR): * Output Timer 0 (not DREQ) on *TOUT[0] / *DREQ[1] * Input Timer 0 (not DREQ) on *TIN[0] / *DREQ[0] * IRQ, not IPL * UART2 RTS signal (not \RSTO) * PST/DDATA (not PPIO) * *WE (not CS/A) */ *MCF5206E_PAR(MBAR) = MCF5206E_PAR_PAR9_TOUT | MCF5206E_PAR_PAR8_TIN0 | MCF5206E_PAR_PAR7_UART2 | MCF5206E_PAR_PAR6_IRQ | MCF5206E_PAR_PAR5_PST | MCF5206E_PAR_PAR4_DDATA | MCF5206E_PAR_WE0_WE1_WE2_WE3; /* Set SIM Configuration Register (SIMR): * Disable software watchdog timer and bus timeout monitor when * internal freeze signal is asserted. */ *MCF5206E_SIMR(MBAR) = MCF5206E_SIMR_FRZ0 | MCF5206E_SIMR_FRZ1; /* Set Interrupt Mask Register: Disable all interrupts */ *MCF5206E_IMR(MBAR) = 0xFFFF; /* Assign Interrupt Control Registers as it is defined in bsp.h */ *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL1) = (BSP_INTLVL_AVEC1 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC1 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL2) = (BSP_INTLVL_AVEC2 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC2 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL3) = (BSP_INTLVL_AVEC3 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC3 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL4) = (BSP_INTLVL_AVEC4 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC4 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL5) = (BSP_INTLVL_AVEC5 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC5 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL6) = (BSP_INTLVL_AVEC6 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC6 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_EXT_IPL7) = (BSP_INTLVL_AVEC7 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_AVEC7 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_TIMER_1) = (BSP_INTLVL_TIMER1 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_TIMER1 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_TIMER_2) = (BSP_INTLVL_TIMER2 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_TIMER2 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_MBUS) = (BSP_INTLVL_MBUS << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_MBUS << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_UART_1) = (BSP_INTLVL_UART1 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_UART1 << MCF5206E_ICR_IP_S); *MCF5206E_ICR(MBAR,MCF5206E_INTR_UART_2) = (BSP_INTLVL_UART2 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_UART2 << MCF5206E_ICR_IP_S); *MCF5206E_ICR(MBAR,MCF5206E_INTR_DMA_0) = (BSP_INTLVL_DMA0 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_DMA0 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; *MCF5206E_ICR(MBAR,MCF5206E_INTR_DMA_1) = (BSP_INTLVL_DMA1 << MCF5206E_ICR_IL_S) | (BSP_INTPRIO_DMA1 << MCF5206E_ICR_IP_S) | MCF5206E_ICR_AVEC; /* Software Watchdog timer (not used now) */ *MCF5206E_SWIVR(MBAR) = 0x0F; /* Uninitialized interrupt */ *MCF5206E_SWSR(MBAR) = MCF5206E_SWSR_KEY1; *MCF5206E_SWSR(MBAR) = MCF5206E_SWSR_KEY2; /* Configuring Chip Selects */ /* CS2: SRAM memory */ *MCF5206E_CSAR(MBAR,2) = BSP_MEM_ADDR_ESRAM >> 16; *MCF5206E_CSMR(MBAR,2) = BSP_MEM_MASK_ESRAM; *MCF5206E_CSCR(MBAR,2) = MCF5206E_CSCR_WS1 | MCF5206E_CSCR_PS_32 | MCF5206E_CSCR_AA | MCF5206E_CSCR_EMAA | MCF5206E_CSCR_WR | MCF5206E_CSCR_RD; /* CS3: GPIO on eLITE board */ *MCF5206E_CSAR(MBAR,3) = BSP_MEM_ADDR_GPIO >> 16; *MCF5206E_CSMR(MBAR,3) = BSP_MEM_MASK_GPIO; *MCF5206E_CSCR(MBAR,3) = MCF5206E_CSCR_WS15 | MCF5206E_CSCR_PS_16 | MCF5206E_CSCR_AA | MCF5206E_CSCR_EMAA | MCF5206E_CSCR_WR | MCF5206E_CSCR_RD; { extern void INTERRUPT_VECTOR(); uint32_t *inttab = (uint32_t*)&INTERRUPT_VECTOR; uint32_t *intvec = (uint32_t*)BSP_MEM_ADDR_ESRAM; register int i; for (i = 0; i < 256; i++) { *(intvec++) = *(inttab++); } } m68k_set_vbr(BSP_MEM_ADDR_ESRAM); /* CS0: Flash EEPROM */ *MCF5206E_CSAR(MBAR,0) = BSP_MEM_ADDR_FLASH >> 16; *MCF5206E_CSCR(MBAR,0) = MCF5206E_CSCR_WS3 | MCF5206E_CSCR_AA | MCF5206E_CSCR_PS_16 | MCF5206E_CSCR_EMAA | MCF5206E_CSCR_WR | MCF5206E_CSCR_RD; *MCF5206E_CSMR(MBAR,0) = BSP_MEM_MASK_FLASH; /* * Invalidate the cache and disable it */ mcf5206e_disable_cache(); /* * Setup ACRs so that if cache turned on, periphal accesses * are not messed up. (Non-cacheable, serialized) */ m68k_set_acr0 ( 0 | MCF5206E_ACR_BASE(BSP_MEM_ADDR_ESRAM) | MCF5206E_ACR_MASK(BSP_MEM_MASK_ESRAM) | MCF5206E_ACR_EN | MCF5206E_ACR_SM_ANY ); m68k_set_acr1 ( 0 | MCF5206E_ACR_BASE(BSP_MEM_ADDR_FLASH) | MCF5206E_ACR_MASK(BSP_MEM_MASK_FLASH) | MCF5206E_ACR_EN | MCF5206E_ACR_SM_ANY ); mcf5206e_enable_cache(); /* * Copy data, clear BSS, switch stacks and call boot_card() */ CopyDataClearBSSAndStart (BSP_MEM_SIZE_ESRAM - 0x400); }