/*
* 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 <vvv@oktet.ru>
*
* 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 <rtems.h>
#include <bsp.h>
#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);
}
