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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)

//

//=============================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

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// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

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//####ECOSGPLCOPYRIGHTEND####

//=============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-05-08

// Purpose:      Intel SA1110/Assabet platform specific support routines

// Description:

// Usage:        #include <cyg/hal/hal_platform_setup.h>

//     Only used by "vectors.S"

//

//####DESCRIPTIONEND####

//

//===========================================================================*/

#include <pkgconf/system.h>             // System-wide configuration info

#include CYGBLD_HAL_VARIANT_H           // Variant (SA11x0) specific configuration

#include CYGBLD_HAL_PLATFORM_H          // Platform specific configuration

#include <cyg/hal/hal_sa11x0.h>         // Variant specific hardware definitions

#include <cyg/hal/hal_mmu.h>            // MMU definitions

#include <cyg/hal/cerfpda.h>            // Platform specific hardware definitions

#if defined(CYG_HAL_STARTUP_ROM)

#define PLATFORM_SETUP1 _platform_setup1

#define CYGHWR_HAL_ARM_HAS_MMU

#if (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 59000)

#define SA11X0_PLL_CLOCK 0x0        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 73700)

#define SA11X0_PLL_CLOCK 0x1

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 88500)

#define SA11X0_PLL_CLOCK 0x2        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 103200) 

#define SA11X0_PLL_CLOCK 0x3        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 118000)

#define SA11X0_PLL_CLOCK 0x4        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 132700)

#define SA11X0_PLL_CLOCK 0x5        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 147500)

#define SA11X0_PLL_CLOCK 0x6        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 162200)

#define SA11X0_PLL_CLOCK 0x7        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 176900)

#define SA11X0_PLL_CLOCK 0x8        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 191700)

#define SA11X0_PLL_CLOCK 0x9        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 206400)

#define SA11X0_PLL_CLOCK 0xA        

#elif (CYGHWR_HAL_ARM_SA11X0_PROCESSOR_CLOCK == 221200)

#define SA11X0_PLL_CLOCK 0xB        

#else

#error Invalid processor clock speed

#endif

#define CAS0_WAVEFORM_VALUE     0xAAAAAA9F

#define CAS1_WAVEFORM_VALUE     0xAAAAAAAA

#define CAS2_WAVEFORM_VALUE     0xAAAAAAAA

#define MSC0VALUE           0xFFFCFFF8

#define MSC1VALUE           0xFFFFFFFF

#define MSC2VALUE           0xFFFFFFFF

#define DRAM_CONFIG_VALUE   0x72647264

#define RFSH_CONFIG_VALUE   0x00300161

// Macros that handle the red debug LED wired to GPIO-1

        .macro    _LED_ON,led

        ldr     r1,=SA11X0_GPIO_PIN_OUTPUT_SET

        mov     r0,#(1<<\led)

        str     r0,[r1]

        // Delay        

        ldr     r1,=10000

10:     sub     r1,r1,#1

        cmp     r1,#0

        bne     10b

        .endm

        .macro    _LED_OFF,led

        ldr     r1,=SA11X0_GPIO_PIN_OUTPUT_CLEAR

        mov     r0,#(1<<\led)

        str     r0,[r1]

        // Delay        

        ldr     r1,=10000

10:     sub     r1,r1,#1

        cmp     r1,#0

        bne     10b

        .endm

// This macro represents the initial startup code for the platform        

        .macro  _platform_setup1

        // Disable all interrupts (ICMR not specified on power-up)

        ldr     r1,=SA11X0_ICMR

        mov     r0,#0

        str     r0,[r1]

        // Initialize the CPU.

        mov     r0, #0x0                //  Get a zero to turn things off

        mcr     p15, 0, r0, c1, c0, 0     //  MMU off

        mcr     p15, 0, r0, c8, c7, 0     //  Flush TLB

        mcr     p15, 0, r0, c7, c7, 0     //  Flush caches

        nop

        nop

        nop

        nop

        // Disable IRQs and FIQs

        mov     r0, #(CPSR_IRQ_DISABLE | \

                      CPSR_FIQ_DISABLE | \

                      CPSR_SUPERVISOR_MODE)

        msr     cpsr, r0

            // Set up GPIOs (LED1 off)

        ldr     r1,=SA11X0_GPIO_PIN_DIRECTION

        ldr     r2,=0x0320000f          // Set LT1348,DREN,RXEN,CF and LEDs to be output

        str     r2,[r1]

        ldr     r3,=SA11X0_GPIO_PIN_OUTPUT_SET

        ldr     r2,=0x0300000f          // Set the LT1348,DREN,RXEN and LEDs to 1.

        str     r2,[r3]

        ldr     r3,=SA11X0_GPIO_PIN_OUTPUT_CLEAR

        ldr     r2,=0x0020000f          // Set CF reset,LEDS OFF

        str     r2,[r3]

        // Turn on LED 0

        _LED_ON 0

        // Disable clock switching

        mcr     p15,0,r0,\

                SA11X0_TEST_CLOCK_AND_IDLE_REGISTER,\

                SA11X0_DISABLE_CLOCK_SWITCHING_RM,\

                SA11X0_DISABLE_CLOCK_SWITCHING_OPCODE

        // Set up processor clock

        ldr     r1,=SA11X0_PWR_MGR_PLL_CONFIG

        ldr     r2,=SA11X0_PLL_CLOCK

        str     r2,[r1]

        // Turn clock switching back on

        mcr     p15,0,r0,\

                SA11X0_TEST_CLOCK_AND_IDLE_REGISTER,\

                SA11X0_ENABLE_CLOCK_SWITCHING_RM,\

                SA11X0_ENABLE_CLOCK_SWITCHING_OPCODE

        nop

        nop

        // Let the PLL settle down      

        ldr     r1,=20000

10:     sub     r1,r1,#1

        cmp     r1,#0

        bne     10b

        // Turn on LED 1

        _LED_ON 1

        // Initialize DRAM controller

        ldr     r1,=dram_table

        ldr     r2,=__exception_handlers

        sub     r1,r1,r2

        ldr     r2,[r1],#4                      // First control register

10:     ldr     r3,[r1],#4

        str     r3,[r2]

        ldr     r2,[r1],#4                      // Next control register

        cmp     r2,#0

        bne     10b

        // Turn on LED 2

        _LED_ON 2

        // Enable UART

        ldr     r1,=SA1110_GPCLK_CONTROL_0

        ldr     r2,=SA1110_GPCLK_SUS_UART

        str     r2,[r1]

        // Release DRAM hold (set by RESET)

        ldr     r1,=SA11X0_PWR_MGR_SLEEP_STATUS

        ldr     r2,=SA11X0_DRAM_CONTROL_HOLD

        str     r2,[r1]

        // Perform 8 reads from unmapped/unenabled DRAM

        ldr     r1,=SA11X0_RAM_BANK0_BASE

            ldr     r2,[r1]

        ldr     r2,[r1]

        ldr     r2,[r1]

        ldr     r2,[r1]

        ldr     r2,[r1]

        ldr     r2,[r1]

        ldr     r2,[r1]

        ldr     r2,[r1]

            // Enable DRAM bank 0

        ldr     r1,=SA11X0_DRAM_CONFIGURATION

        ldr     r2,=DRAM_CONFIG_VALUE

            ldr     r3,=0x00030003

        orr     r2, r2, r3

        str     r2,[r1]

            // Wait for the DRAM to come up.

        mov     r1, #0x400

0:           subs    r1, r1, #1

        bne     0b

        // Turn on LED 3

        _LED_ON 3

        b       19f

// DRAM controller initialization        

dram_table:

        .word   SA11X0_DRAM0_CAS_0,           CAS0_WAVEFORM_VALUE

        .word   SA11X0_DRAM0_CAS_1,           CAS1_WAVEFORM_VALUE

        .word   SA11X0_DRAM0_CAS_2,           CAS2_WAVEFORM_VALUE

        .word   SA11X0_DRAM2_CAS_0,           CAS0_WAVEFORM_VALUE

        .word   SA11X0_DRAM2_CAS_1,           CAS1_WAVEFORM_VALUE

        .word   SA11X0_DRAM2_CAS_2,           CAS2_WAVEFORM_VALUE

        .word   SA11X0_REFRESH_CONFIGURATION, RFSH_CONFIG_VALUE

        .word   SA11X0_DRAM_CONFIGURATION,    DRAM_CONFIG_VALUE

        .word   SA11X0_STATIC_CONTROL_0,      MSC0VALUE

        .word   SA11X0_STATIC_CONTROL_1,      MSC1VALUE

        .word   SA11X0_STATIC_CONTROL_2,      MSC2VALUE

        .word   0, 0

19:

        // Wakeup from deep sleep mode

        ldr     r1,=SA11X0_RESET_STATUS

        ldr     r2,[r1]

        cmp     r2,#SA11X0_SLEEP_MODE_RESET

        bne     45f

        ldr     r1,=SA11X0_PWR_MGR_SCRATCHPAD

        ldr     r1,[r1]

        mov     pc,r1

        nop

45:     nop

        // Release peripheral hold (set by RESET)

        ldr     r1,=SA11X0_PWR_MGR_SLEEP_STATUS

        ldr     r2,=SA11X0_PERIPHERAL_CONTROL_HOLD

        str     r2,[r1]

        // Set up a stack [for calling C code]

        ldr     r1,=__startup_stack

        ldr     r2,=SA11X0_RAM_BANK0_BASE

        orr     sp,r1,r2

        // Create MMU tables

        bl      hal_mmu_init

        // Turn OFF LED 0 

        _LED_OFF 0

        // Enable MMU

        ldr     r2,=10f

        ldr         r1,=MMU_Control_Init|MMU_Control_M

            mcr     MMU_CP,0,r1,MMU_Control,c0

            mov     pc,r2    /* Change address spaces */

            nop

            nop

            nop

10:

        // Turn OFF LED 1 

        _LED_OFF 1

        // Save shadow copy of BCR, also hardware configuration

        ldr     r1,=_cerfpda_BCR

        str     r2,[r1]

        .endm

#else // defined(CYG_HAL_STARTUP_ROM)

#define PLATFORM_SETUP1

#endif

#define PLATFORM_VECTORS         _platform_vectors

        .macro  _platform_vectors

        .globl  _cerfpda_BCR

_cerfpda_BCR:   .long   0       // Board Control register shadow

        .endm

/*---------------------------------------------------------------------------*/

/* end of hal_platform_setup.h                                               */

#endif /* CYGONCE_HAL_PLATFORM_SETUP_H */