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#ifndef CYGONCE_HAL_PLATFORM_SETUP_H
#define CYGONCE_HAL_PLATFORM_SETUP_H
 
/*=============================================================================
//
//      hal_platform_setup.h
//
//      Platform specific support for HAL (assembly code)
//
//=============================================================================
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// -------------------------------------------                              
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// for more details.                                                        
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//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
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// this file does not by itself cause the resulting work to be covered by   
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// General Public License v2.                                               
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//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jani 
// Contributors:
// Date:        2004-09-12
// Purpose:     LPC2XXX/LPCMT platform specific support routines
// Description:
// Usage:       #include <cyg/hal/hal_platform_setup.h>
//
//####DESCRIPTIONEND####
//
//===========================================================================*/
 
#include <pkgconf/system.h>
#include <cyg/hal/var_io.h>
 
//===========================================================================*/
 
	.macro  _led_init
        ldr r0,=CYGARC_HAL_LPC2XXX_REG_IO_BASE
	ldr r1,=(1<<12)	// GPIO0 pin 12 is LED output
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_IODIR]
        .endm
 
        .macro _led x
	ldr r0,=CYGARC_HAL_LPC2XXX_REG_IO_BASE
	ldr r1,=(1<<12)
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_IOCLR]
	ldr r1,=((\x & 1)<<12)
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_IOSET]
	.endm
 
	.macro _pll_init
	ldr r0,=CYGARC_HAL_LPC2XXX_REG_SCB_BASE
 
	mov r2,#0xAA
	mov r3,#0x55
 
	mov r1,#1			// enable PLL	
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLCON]
 
	mov r1,#(0x20 | (CYGNUM_HAL_ARM_LPC2XXX_PLL_MUL - 1))
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLCFG]	
 
	str r2,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLFEED]	// update PLL registers
	str r3,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLFEED]
 
1:
	ldr r1,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLSTAT]	// wait for it to lock
	ands r1,r1,#(1<<10)
	beq 1b
 
	mov r1,#3			// connect PLL
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLCON]
 
	str r2,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLFEED]	// update PLL registers
	str r3,[r0,#CYGARC_HAL_LPC2XXX_REG_PLLFEED]
 
	.endm
 
	.macro _mem_init
	mov r0,#0			// copy first 64 bytes of flash to RAM
	mov r1,#0x40000000
	mov r2,#0x40
1:
	ldr r3,[r0,#4]!
	str r3,[r1,#4]!
	cmps r0,r2
	bne 1b
 
	ldr r0,=CYGARC_HAL_LPC2XXX_REG_SCB_BASE
	mov r1,#2
	str r1, [r0,#CYGARC_HAL_LPC2XXX_REG_MEMMAP]	// int vectors mapped to RAM
	mov r1,#4
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_MAMTIM]	// flash timings
	mov r1,#2
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_MAMCR]	// enable full MAM
	.endm
 
        .macro _gpio_init
	ldr r0,=CYGARC_HAL_LPC2XXX_REG_PIN_BASE	// enable  RX and TX on UART0
	ldr r1,=0x00000005
	str r1,[r0,#CYGARC_HAL_LPC2XXX_REG_PINSEL0]
	.endm
 
#define CYGHWR_LED_MACRO _led \x 
 
//===========================================================================*/
 
#if defined(CYG_HAL_STARTUP_ROM)
 
        .macro  _setup
 
	_pll_init
 
	_mem_init
 
	_gpio_init
 
	_led_init
 
        .endm
 
#define CYGSEM_HAL_ROM_RESET_USES_JUMP
 
#else
 
        .macro  _setup
        .endm
 
#endif
 
#define PLATFORM_SETUP1     _setup
 
 
//-----------------------------------------------------------------------------
// end of hal_platform_setup.h
#endif // CYGONCE_HAL_PLATFORM_SETUP_H