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#ifndef CYGONCE_HAL_VAR_SETUP_H
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#define CYGONCE_HAL_VAR_SETUP_H
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//=============================================================================
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//
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// hal_var_setup.h
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//
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// Variant specific support for HAL (assembly code)
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//
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//=============================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//=============================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): Ilija Koco <ilijak@siva.com.mk>
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// Contributors:
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// Date: 2006-06-05
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// Purpose: MAC7100 variant specific support routines
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// Description:
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// Usage: in <cyg/hal/hal_platform_serup.h> include following:
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// #include <cyg/hal/hal_var_setup.h>
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//
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//####DESCRIPTIONEND####
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//
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//===========================================================================
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// Clock initilalization
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// Initialize PLL
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#if defined(CYGNUM_HAL_ARM_MAC7100_FDIV) // Divider set by user.
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# define MAC7100_CRG_REFDV_VAL (CYGNUM_HAL_ARM_MAC7100_FDIV-1)
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#else // Divider calculated.
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//NOTE: works for f_osc <= 8MHz
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# define MAC7100_CRG_REFDV_VAL (((CYGNUM_HAL_ARM_MAC7100_F_OSC/500000) - 1) & 0x0F) // 15 (1)
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#endif
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#define MAC7100_CRG_SYNR_VAL (CYGNUM_HAL_ARM_MAC7100_CLOCK_SPEED / 2 / \
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(CYGNUM_HAL_ARM_MAC7100_F_OSC / (MAC7100_CRG_REFDV_VAL+1))-1) // 47 (5)
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#define MAC7100_CRG_PLLCTL_VAL \
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(MAC7100_CRG_CME|MAC7100_CRG_PLLON|MAC7100_CRG_AUTO| \
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MAC7100_CRG_ACQ|MAC7100_CRG_SCME)
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#define MAC7100_CRG_CLKSEL_VAL (MAC7100_CRG_PLLSEL)
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.macro _mac7100_setpll
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ldr r2,=MAC7100_CRG_BASE
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mov r3,#0
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// Disable clock interrupts
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strb r3,[r2,#(MAC7100_CRG_CRGINT-MAC7100_CRG_BASE)]
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// DeSelect PLL clock
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mov r3,#MAC7100_CRG_REFDV_VAL
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// Reference Divider reg.
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strb r3,[r2,#(MAC7100_CRG_REFDV-MAC7100_CRG_BASE)]
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mov r3,#MAC7100_CRG_SYNR_VAL
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// Synthesizer register
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strb r3,[r2,#(MAC7100_CRG_SYNR-MAC7100_CRG_BASE)]
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mov r3,#MAC7100_CRG_PLLCTL_VAL
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// PLL control register
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strb r3,[r2,#(MAC7100_CRG_PLLCTL-MAC7100_CRG_BASE)]
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// Wait PLL lock <-----------------------------------<
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1: ldrb r3,[r2,#(MAC7100_CRG_CRGFLG-MAC7100_CRG_BASE)]
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tst r3,#MAC7100_CRG_LOCK
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bne 2f // PLL locked, GO ON ---------->>
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b 1b // Still waiting for PLL lock ------------>
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2: mov r3,#MAC7100_CRG_CLKSEL_VAL // <<-------<<
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// Select PLL clock
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strb r3,[r2,#(MAC7100_CRG_CLKSEL-MAC7100_CRG_BASE)]
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mov r3,#0
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strb r3,[r2,#(MAC7100_CRG_BDMCTL-MAC7100_CRG_BASE)] // Set CRG BDMCTL
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mov r3,r3
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.endm
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// Memory re-mapping for single chip configuration
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// Re-map internal memory so that vectors can reside in RAM.
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// RAM base 0x00000000 (as well as 0x40000000)
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// Flash base 0x20000000
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.macro _mac7100_remap_single_chip
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_led 1
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ldr r1, _mac7100_teleport
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ldr r0, [r1] //AAMR Register
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mvn r4, #0xf0000000 // 1.Copy telepoter to RAM
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ldr r2, _mac7100_teleport+4 // TelePorter
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ldr r3, _mac7100_teleport+8 // TelePort (TelePorter end)
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and r2,r2,r4
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and r3,r3,r4
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mov r4, #0x40000000 // RAM address
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1: // Copy teleporter: // copying teleporter <---<
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ldr r5,[r2],#4
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str r5,[r4],#4
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cmp r2,r3
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bne 1b // Copy teleporter -------->
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ldr r3,_mac7100_teleport+12
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mov pc,#0x40000000 // 2.Jump to _mac7100_teleporter in RAM
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_mac7100_teleporter:
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bic r0,r0,#0x000000ff // 3.Re-map memory
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orr r0,r0,#0x8b // Flash -> 0x20000000
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str r0,[r1] // RAM -> 0x00000000 and 0x40000000
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mov pc,r3 // 4.Teleport back to Flash
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_mac7100_teleport:
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.long MAC7100_MCM_AAMR
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.long _mac7100_teleporter
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.long _mac7100_teleport
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.long _mac7100_teleport_return
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_mac7100_teleport_return:
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.endm
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// End memory re-mapping for single chip configuration
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//-----------------------------------------------------------------------------
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// end of hal_var_setup.h
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#endif // CYGONCE_HAL_VAR_SETUP_H
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