EZ80 support
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@729 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
2dda17684f
commit
b1234a6bda
77
arch/z80/include/ez80/arch.h
Normal file
77
arch/z80/include/ez80/arch.h
Normal file
@ -0,0 +1,77 @@
|
||||
/****************************************************************************
|
||||
* arch/ez80/arch.h
|
||||
* arch/chip/arch.h
|
||||
*
|
||||
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/* This file should never be included directed but, rather,
|
||||
* only indirectly through nuttx/arch.h (via arch/arch.h)
|
||||
*/
|
||||
|
||||
#ifndef __ARCH_EZ80_ARCH_H
|
||||
#define __ARCH_EZ80_ARCH_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C" {
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __ARCH_EZ80_ARCH_H */
|
||||
|
||||
256
arch/z80/include/ez80/irq.h
Normal file
256
arch/z80/include/ez80/irq.h
Normal file
@ -0,0 +1,256 @@
|
||||
/****************************************************************************
|
||||
* arch/ez80/include/ez80/irq.h
|
||||
* arch/chip/irq.h
|
||||
*
|
||||
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/* This file should never be included directed but, rather,
|
||||
* only indirectly through nuttx/irq.h (via arch/irq.h)
|
||||
*/
|
||||
|
||||
#ifndef __ARCH_EZ80_IRQ_H
|
||||
#define __ARCH_EZ80_IRQ_H
|
||||
|
||||
#ifndef _EZ80F91
|
||||
# error "Only the EZ80F91 is currently supported"
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/* ez80 Interrupt Numbers ***************************************************/
|
||||
|
||||
#define EZ80_EMACRX_IRQ (0) /* Vector 0x40 */
|
||||
#define EZ80_EMACTX_IRQ (1) /* Vector 0x44 */
|
||||
#define EZ80_EMACSYS_IRQ (2) /* Vector 0x48 */
|
||||
#define EZ80_PLL_IRQ (3) /* Vector 0x4c */
|
||||
#define EZ80_FLASH_IRQ (4) /* Vector 0x50 */
|
||||
|
||||
#define EZ80_TIMER0_IRQ (5) /* Vector Ox54 */
|
||||
#define EZ80_TIMER1_IRQ (6) /* Vector Ox58 */
|
||||
#define EZ80_TIMER2_IRQ (7) /* Vector Ox5c */
|
||||
#define EZ80_TIMER3_IRQ (8) /* Vector Ox60 */
|
||||
|
||||
#define EZ80_RTC_IRQ (9) /* Vector Ox6C */
|
||||
#define EZ80_UART0_IRQ (10) /* Vector Ox70 */
|
||||
#define EZ80_UART1_IRQ (11) /* Vector Ox74 */
|
||||
|
||||
#define EZ80_I2C_IRQ (12) /* Vector Ox78 */
|
||||
#define EZ80_SPI_IRQ (13) /* Vector Ox7c */
|
||||
|
||||
#define EZ80_PORTA0_IRQ (14) /* Vector Ox80 */
|
||||
#define EZ80_PORTA1_IRQ (15) /* Vector Ox84 */
|
||||
#define EZ80_PORTA2_IRQ (16) /* Vector Ox88 */
|
||||
#define EZ80_PORTA3_IRQ (17) /* Vector Ox8c */
|
||||
#define EZ80_PORTA4_IRQ (18) /* Vector Ox90 */
|
||||
#define EZ80_PORTA5_IRQ (19) /* Vector Ox94 */
|
||||
#define EZ80_PORTA6_IRQ (20) /* Vector Ox98 */
|
||||
#define EZ80_PORTA7_IRQ (21) /* Vector Ox9c */
|
||||
|
||||
#define EZ80_PORTB0_IRQ (22) /* Vector Oxa0 */
|
||||
#define EZ80_PORTB1_IRQ (23) /* Vector Oxa4 */
|
||||
#define EZ80_PORTB2_IRQ (24) /* Vector Oxa8 */
|
||||
#define EZ80_PORTB3_IRQ (25) /* Vector Oxac */
|
||||
#define EZ80_PORTB4_IRQ (26) /* Vector Oxb0 */
|
||||
#define EZ80_PORTB5_IRQ (27) /* Vector Oxb4 */
|
||||
#define EZ80_PORTB6_IRQ (28) /* Vector Oxb8 */
|
||||
#define EZ80_PORTB7_IRQ (29) /* Vector Oxbc */
|
||||
|
||||
#define EZ80_PORTC0_IRQ (30) /* Vector Oxc0 */
|
||||
#define EZ80_PORTC1_IRQ (31) /* Vector Oxc4 */
|
||||
#define EZ80_PORTC2_IRQ (32) /* Vector Oxc8 */
|
||||
#define EZ80_PORTC3_IRQ (33) /* Vector Oxcc */
|
||||
#define EZ80_PORTC4_IRQ (34) /* Vector Oxd0 */
|
||||
#define EZ80_PORTC5_IRQ (35) /* Vector Oxd4 */
|
||||
#define EZ80_PORTC6_IRQ (36) /* Vector Oxd8 */
|
||||
#define EZ80_PORTC7_IRQ (37) /* Vector Oxdc */
|
||||
|
||||
#define EZ80_PORTD0_IRQ (38) /* Vector Oxe0 */
|
||||
#define EZ80_PORTD1_IRQ (39) /* Vector Oxe4 */
|
||||
#define EZ80_PORTD2_IRQ (40) /* Vector Oxe8 */
|
||||
#define EZ80_PORTD3_IRQ (41) /* Vector Oxec */
|
||||
#define EZ80_PORTD4_IRQ (42) /* Vector Oxf0 */
|
||||
#define EZ80_PORTD5_IRQ (43) /* Vector Oxf4 */
|
||||
#define EZ80_PORTD6_IRQ (44) /* Vector Oxf8 */
|
||||
#define EZ80_PORTD7_IRQ (45) /* Vector Oxfc */
|
||||
|
||||
#define NR_IRQS (46)
|
||||
#define EZ80_IRQ_SYSTIMER EZ80_TIMER0_IRQ
|
||||
|
||||
/* IRQ Management Macros ****************************************************/
|
||||
|
||||
/* IRQ State Save Format ****************************************************
|
||||
*
|
||||
* These indices describe how the ez8 context is save in the state save array
|
||||
*
|
||||
* Byte offsets:
|
||||
*/
|
||||
|
||||
/* IRQ Stack Frame Format
|
||||
*
|
||||
* This stack frame is created on each interrupt. These registers are stored
|
||||
* in the TCB to many context switches.
|
||||
*/
|
||||
|
||||
/* chipreg_t indices */
|
||||
|
||||
#define XCPT_I (0) /* Index 0: 16-bit interrupt vector register */
|
||||
#define XCPT_BC (1) /* Index 1: Saved 16-bit BC register */
|
||||
#define XCPT_DE (2) /* Index 2: Saved 16-bit DE register */
|
||||
#define XCPT_IX (3) /* Index 3: Saved 16-bit IX register */
|
||||
#define XCPT_IY (4) /* Index 4: Saved 16-bit IY register */
|
||||
#define XCPT_SP (5) /* Index 5: Saved 16-bit SP at time of interrupt */
|
||||
#define XCPT_HL (6) /* Index 6: Saved 16-bit HL register */
|
||||
#define XCPT_AF (7) /* Index 7: Saved 16-bit AF register */
|
||||
#define XCPT_PC (8) /* Index 8: Offset to 16-bit PC at time of interrupt */
|
||||
#define XCPTCONTEXT_REGS (9)
|
||||
|
||||
#ifdef CONFIG_EZ80_Z80MODE
|
||||
/* Byte offsets */
|
||||
|
||||
# define XCPT_I16_OFFSET (2*XCPT_I) /* Offset 0: 16-bit interrupt vector register */
|
||||
# define XCPT_I_OFFSET (2*XCPT_I+1) /* Offset 1: 8-bit interrupt vector register */
|
||||
# define XCPT_BC_OFFSET (2*XCPT_BC) /* Offset 2: Saved 16-bit BC register */
|
||||
# define XCPT_C_OFFSET (2*XCPT_BC+0) /* Offset 2: Saved 8-bit C register */
|
||||
# define XCPT_B_OFFSET (2*XCPT_BC+1) /* Offset 3: Saved 8-bit D register */
|
||||
# define XCPT_DE_OFFSET (2*XCPT_DE) /* Offset 4: Saved 16-bit DE register */
|
||||
# define XCPT_E_OFFSET (2*XCPT_DE+0) /* Offset 4: Saved 8-bit E register */
|
||||
# define XCPT_D_OFFSET (2*XCPT_DE+1) /* Offset 5: Saved 8-bit D register */
|
||||
# define XCPT_IX_OFFSET (2*XCPT_IX) /* Offset 6: Saved 16-bit IX register */
|
||||
# define XCPT_IY_OFFSET (2*XCPT_IY) /* Offset 8: Saved 16-bit IY register */
|
||||
# define XCPT_SP_OFFSET (2*XCPT_SP) /* Offset 10: Saved 16-bit SP at time of interrupt */
|
||||
# define XCPT_HL_OFFSET (2*XCPT_HL) /* Offset 12: Saved 16-bit HL register */
|
||||
# define XCPT_L_OFFSET (2*XCPT_HL+0) /* Offset 12: Saved 8-bit L register */
|
||||
# define XCPT_H_OFFSET (2*XCPT_HL+1) /* Offset 13: Saved 8-bit H register */
|
||||
# define XCPT_AF_OFFSET (2*XCPT_AF) /* Offset 14: Saved 16-bit AF register */
|
||||
# define XCPT_F_OFFSET (2*XCPT_AF+0) /* Offset 14: Saved flags */
|
||||
# define XCPT_A_OFFSET (2*XCPT_AF+1) /* Offset 15: Saved 8-bit A register */
|
||||
# define XCPT_PC_OFFSET (2*XCPT_PC) /* Offset 16: Offset to 16-bit PC at time of interrupt */
|
||||
# define XCPTCONTEXT_SIZE (2*XCPTCONTEXT_REGS)
|
||||
#else
|
||||
/* Byte offsets */
|
||||
|
||||
# define XCPT_I24_OFFSET (3*XCPT_I) /* Offset 0: Saved 24-bit interrupt vector register */
|
||||
# define XCPT_I_OFFSET (3*XCPT_I+2) /* Offset 2: Saved 8-bit interrupt vector register */
|
||||
# define XCPT_BC_OFFSET (3*XCPT_BC) /* Offset 3: Saved 24-bit BC register */
|
||||
# define XCPT_C_OFFSET (3*XCPT_BC+1) /* Offset 4: Saved 8-bit C register */
|
||||
# define XCPT_B_OFFSET (3*XCPT_BC+2) /* Offset 5: Saved 8-bit D register */
|
||||
# define XCPT_DE_OFFSET (3*XCPT_DE) /* Offset 6: Saved 24-bit DE register */
|
||||
# define XCPT_E_OFFSET (3*XCPT_DE+1) /* Offset 7: Saved 8-bit E register */
|
||||
# define XCPT_D_OFFSET (3*XCPT_DE+2) /* Offset 8: Saved 8-bit D register */
|
||||
# define XCPT_IX_OFFSET (3*XCPT_IX) /* Offset 9: Saved 24-bit IX register */
|
||||
# define XCPT_IY_OFFSET (3*XCPT_IY) /* Offset 12: Saved 24-bit IY register */
|
||||
# define XCPT_SP_OFFSET (3*XCPT_SP) /* Offset 15: Saved 24-bit SP at time of interrupt */
|
||||
# define XCPT_HL_OFFSET (3*XCPT_HL) /* Offset 18: Saved 24-bit HL register */
|
||||
# define XCPT_L_OFFSET (3*XCPT_HL+1) /* Offset 19: Saved 8-bit L register */
|
||||
# define XCPT_H_OFFSET (3*XCPT_HL+2) /* Offset 20: Saved 8-bit H register */
|
||||
# define XCPT_AF_OFFSET (3*XCPT_AF) /* Offset 21: Saved AF register */
|
||||
# define XCPT_F_OFFSET (3*XCPT_AF+1) /* Offset 22: Saved AF register */
|
||||
# define XCPT_A_OFFSET (3*XCPT_AF+2) /* Offset 23: Saved 8-bit A register */
|
||||
# define XCPT_PC_OFFSET (3*XCPT_PC) /* Offset 24: Offset to 24-bit PC at time of interrupt */
|
||||
# define XCPTCONTEXT_SIZE (3*XCPTCONTEXT_REGS)
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
/* This is the type of the register save array */
|
||||
|
||||
#ifdef CONFIG_EZ80_Z80MODE
|
||||
typedef uint16 chipreg_t;
|
||||
#else
|
||||
typedef uint24 chipreg_t;
|
||||
#endif
|
||||
|
||||
/* This struct defines the way the registers are stored. */
|
||||
|
||||
struct xcptcontext
|
||||
{
|
||||
/* Register save area */
|
||||
|
||||
chipreg_t regs[XCPTCONTEXT_REGS];
|
||||
|
||||
/* The following function pointer is non-zero if there
|
||||
* are pending signals to be processed.
|
||||
*/
|
||||
|
||||
#ifndef CONFIG_DISABLE_SIGNALS
|
||||
CODE void *sigdeliver; /* Actual type is sig_deliver_t */
|
||||
|
||||
/* The following retains that state during signal execution */
|
||||
|
||||
chipreg_t saved_pc; /* Saved return address */
|
||||
chipreg_t saved_irqctl; /* Saved interrupt state */
|
||||
#endif
|
||||
};
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Inline functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Variables
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C" {
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
EXTERN irqstate_t irqsave(void);
|
||||
EXTERN void irqrestore(irqstate_t flags);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#endif /* __ARCH_EZ80_IRQ_H */
|
||||
|
||||
95
arch/z80/include/ez80/types.h
Normal file
95
arch/z80/include/ez80/types.h
Normal file
@ -0,0 +1,95 @@
|
||||
/****************************************************************************
|
||||
* arch/z80/include/ez80/types.h
|
||||
* include/arch/chip/types.h
|
||||
*
|
||||
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/* This file should never be included directed but, rather, only indirectly
|
||||
* through sys/types.h
|
||||
*/
|
||||
|
||||
#ifndef __ARCH_CHIP_TYPES_H
|
||||
#define __ARCH_CHIP_TYPES_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Type Declarations
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
/* These are the sizes of the types supported by the ZiLOG Z8Encore! compiler:
|
||||
*
|
||||
* int - 24-bits
|
||||
* short - 16-bits
|
||||
* long - 32-bits
|
||||
* char - 8-bits
|
||||
* float - 32-bits
|
||||
*
|
||||
* Pointers:
|
||||
*
|
||||
* Z80 mode - 16 bits
|
||||
* ADL mode - 24 bits
|
||||
*/
|
||||
|
||||
typedef char sbyte;
|
||||
typedef unsigned char ubyte;
|
||||
typedef unsigned char uint8;
|
||||
typedef unsigned char boolean;
|
||||
typedef short sint16;
|
||||
typedef unsigned short uint16;
|
||||
typedef int sint24;
|
||||
typedef unsigned int uint24;
|
||||
typedef long sint32;
|
||||
typedef unsigned long uint32;
|
||||
|
||||
/* This is the size of the interrupt state save returned by irqsave().
|
||||
* It holds the contents of the interrupt vector address
|
||||
*/
|
||||
|
||||
typedef ubyte irqstate_t;
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
/****************************************************************************
|
||||
* Global Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#endif /* __ARCH_CHIP_TYPES_H */
|
||||
49
arch/z80/src/ez80/Make.defs
Normal file
49
arch/z80/src/ez80/Make.defs
Normal file
@ -0,0 +1,49 @@
|
||||
############################################################################
|
||||
# arch/z80/src/ez80/Make.defs
|
||||
#
|
||||
# Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
|
||||
############################################################################
|
||||
|
||||
HEAD_SSRC = ez80_head.S
|
||||
|
||||
CMN_SSRCS =
|
||||
CMN_CSRCS = up_initialize.c up_allocateheap.c up_createstack.c \
|
||||
up_releasestack.c up_interruptcontext.c up_blocktask.c \
|
||||
up_unblocktask.c up_exit.c up_releasepending.c \
|
||||
up_reprioritizertr.c up_idle.c up_assert.c up_doirq.c \
|
||||
up_mdelay.c up_udelay.c up_usestack.c
|
||||
|
||||
CHIP_SSRCS = ez80_vector.S ez80_saveusercontext.S ez80_restorecontext.S
|
||||
CHIP_CSRCS = ez80_initialstate.c ez80_irq.c ez80_saveirqcontext.c \
|
||||
ez80_schedulesigaction.c ez80_sigdeliver.c ez80_timerisr.c \
|
||||
ez80_lowuart.c ez80_serial.c ez80_registerdump.c
|
||||
|
||||
100
arch/z80/src/ez80/chip.h
Normal file
100
arch/z80/src/ez80/chip.h
Normal file
@ -0,0 +1,100 @@
|
||||
/************************************************************************************
|
||||
* arch/z80/src/ez80/chip.h
|
||||
* arch/z80/src/chip/chip.h
|
||||
*
|
||||
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __EZ80_CHIP_H
|
||||
#define __EZ80_CHIP_H
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Definitions
|
||||
************************************************************************************/
|
||||
|
||||
/* Hexadecimal Representation *******************************************************/
|
||||
|
||||
#ifdef __ASSEMBLY__
|
||||
# define _HX(h) %##h
|
||||
#else
|
||||
# define _HX(h) 0x##h
|
||||
#endif
|
||||
|
||||
/* Memory Map */
|
||||
/* Special Function Registers *******************************************************
|
||||
*/
|
||||
|
||||
/* Timer Register Bit Definitions ***************************************************/
|
||||
|
||||
|
||||
/* UART Register Offsets *************************************************************/
|
||||
|
||||
/* UART0/1 Base Register Addresses **************************************************/
|
||||
|
||||
/* UART Register Bit Definitions ****************************************************/
|
||||
|
||||
/* Register access macros ***********************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
# define getreg8(a) (*(volatile ubyte *)(a))
|
||||
# define putreg8(v,a) (*(volatile ubyte *)(a) = (v))
|
||||
# define getreg32(a) (*(volatile uint32 *)(a))
|
||||
# define putreg32(v,a) (*(volatile uint32 *)(a) = (v))
|
||||
# define getreg(a) getreg16(1)
|
||||
# define putreg(v,a) putreg16(v,a)
|
||||
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Function Prototypes
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C" {
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#endif /* __EZ80_CHIP_H */
|
||||
249
arch/z80/src/ez80/switch.h
Normal file
249
arch/z80/src/ez80/switch.h
Normal file
@ -0,0 +1,249 @@
|
||||
/************************************************************************************
|
||||
* arch/z80/src/ez80/switch.h
|
||||
* arch/z80/src/chip/switch.h
|
||||
*
|
||||
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __EZ80_SWITCH_H
|
||||
#define __EZ80_SWITCH_H
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <sys/types.h>
|
||||
#ifndef __ASSEMBLY__
|
||||
# include <nuttx/sched.h>
|
||||
# include <nuttx/arch.h>
|
||||
#endif
|
||||
#include "common/up_internal.h"
|
||||
|
||||
/************************************************************************************
|
||||
* Definitions
|
||||
************************************************************************************/
|
||||
|
||||
/* EZ80_IRQSTATE_* definitions ********************************************************
|
||||
* These are used in the state field of 'struct z8_irqstate_s' structure to define
|
||||
* the current state of the interrupt handling. These definition support "lazy"
|
||||
* interrupt context saving. See comments below associated with s'truct z8_irqstate_s'.
|
||||
*/
|
||||
|
||||
#define EZ80_IRQSTATE_NONE 0 /* Not handling an interrupt */
|
||||
#define EZ80_IRQSTATE_ENTRY 1 /* In interrupt, context has not been saved */
|
||||
#define EZ80_IRQSTATE_SAVED 2 /* In interrupt, context has been saved */
|
||||
|
||||
/* The information saved on interrupt entry can be retained in a array of two
|
||||
* uint16 values. These are
|
||||
*
|
||||
* value[0] = RP (MS byte) and Flags (LS) byte
|
||||
* value[1] = PC
|
||||
*
|
||||
* The pointer to the save structure is a stack pointer at the time that up_doirq()
|
||||
* was called:
|
||||
*
|
||||
* PC[7:0]
|
||||
* PC[15:8]
|
||||
* Flags Register
|
||||
* SP -> RP
|
||||
*
|
||||
* The stack pointer on return from interrupt can be obtained by adding 4 to the
|
||||
* pointer to the save structure.
|
||||
*/
|
||||
|
||||
#define EZ80_IRQSAVE_RPFLAGS (0) /* Index 10: RP (MS) and FLAGS (LS) */
|
||||
#define EZ80_IRQSAVE_PC (1) /* Index 2: PC[8:15] */
|
||||
#define EZ80_IRQSAVE_REGS (2) /* Number 16-bit values saved */
|
||||
|
||||
/* Byte offsets */
|
||||
|
||||
#define EZ80_IRQSAVE_RP_OFFS (2*EZ80_IRQSAVE_RPFLAGS) /* Offset 0: RP */
|
||||
#define EZ80_IRQSAVE_FLAGS_OFFS (2*EZ80_IRQSAVE_RPFLAGS+1) /* Offset 1: FLAGS */
|
||||
#define EZ80_IRQSAVE_PCH_OFFS (2*EZ80_IRQSAVE_PC) /* Offset 2: PC[8:15] */
|
||||
#define EZ80_IRQSAVE_PCL_OFFS (2*EZ80_IRQSAVE_PC+1) /* Offset 3: PC[0:7] */
|
||||
#define EZ80_IRQSAVE_SIZE (2*EZ80_IRQSAVE_REGS) /* Number 8-bit values saved */
|
||||
|
||||
/* Macros for portability ***********************************************************
|
||||
*
|
||||
* Common logic in arch/z80/src/common is customized for the z8 context switching
|
||||
* logic via the following macros.
|
||||
*/
|
||||
|
||||
/* Initialize the IRQ state */
|
||||
|
||||
#define INIT_IRQCONTEXT() \
|
||||
do { \
|
||||
g_z8irqstate.state = EZ80_IRQSTATE_NONE; \
|
||||
} while (0)
|
||||
|
||||
/* IN_INTERRUPT returns TRUE if the system is current operating in the interrupt
|
||||
* context. IN_INTERRUPT is the inline equivalent of up_interrupt_context().
|
||||
*/
|
||||
|
||||
#define IN_INTERRUPT() \
|
||||
(g_z8irqstate.state != EZ80_IRQSTATE_NONE)
|
||||
|
||||
/* The following macro is used when the system enters interrupt handling logic */
|
||||
|
||||
#define IRQ_ENTER(irq, regs) \
|
||||
do { \
|
||||
g_z8irqstate.state = EZ80_IRQSTATE_ENTRY; \
|
||||
g_z8irqstate.regs = (regs); \
|
||||
up_maskack_irq(irq); \
|
||||
} while (0)
|
||||
|
||||
/* The following macro is used when the system exits interrupt handling logic */
|
||||
|
||||
#define IRQ_LEAVE(irq) \
|
||||
do { \
|
||||
g_z8irqstate.state = EZ80_IRQSTATE_NONE; \
|
||||
up_enable_irq(irq); \
|
||||
} while (0)
|
||||
|
||||
/* The following macro is used to sample the interrupt state (as a opaque handle) */
|
||||
|
||||
#define IRQ_STATE() \
|
||||
(g_z8irqstate.regs)
|
||||
|
||||
/* Save the current IRQ context in the specified TCB */
|
||||
|
||||
#define SAVE_IRQCONTEXT(tcb) \
|
||||
z8_saveirqcontext((tcb)->xcp.regs)
|
||||
|
||||
/* Set the current IRQ context to the state specified in the TCB */
|
||||
|
||||
#define SET_IRQCONTEXT(tcb) \
|
||||
do { \
|
||||
g_z8irqstate.state = EZ80_IRQSTATE_SAVED; \
|
||||
g_z8irqstate.regs = (tcb)->xcp.regs; \
|
||||
} while (0)
|
||||
|
||||
/* Save the user context in the specified TCB. User context saves can be simpler
|
||||
* because only those registers normally saved in a C called need be stored.
|
||||
*/
|
||||
|
||||
#define SAVE_USERCONTEXT(tcb) \
|
||||
z8_saveusercontext((tcb)->xcp.regs)
|
||||
|
||||
/* Restore the full context -- either a simple user state save or the full,
|
||||
* IRQ state save.
|
||||
*/
|
||||
|
||||
#define RESTORE_USERCONTEXT(tcb) \
|
||||
z8_restorecontext((tcb)->xcp.regs)
|
||||
|
||||
/* Dump the current machine registers */
|
||||
|
||||
#define _REGISTER_DUMP() \
|
||||
z8_registerdump()
|
||||
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
|
||||
/* In order to provide faster interrupt handling, the interrupt logic does "lazy"
|
||||
* context saving as described below:
|
||||
*
|
||||
* (1) At the time of the interrupt, minimum information is saved and the register
|
||||
* pointer is changed so that the interrupt logic does not alter the state of
|
||||
* the interrupted task's registers.
|
||||
* (2) If no context switch occurs during the interrupt processing, then the return
|
||||
* from interrupt is also simple.
|
||||
* (3) If a context switch occurs during interrupt processing, then
|
||||
* (a) The full context of the interrupt task is saved, and
|
||||
* (b) A full context switch is performed when the interrupt exits (see
|
||||
* z8_vector.S).
|
||||
*
|
||||
* The following structure is used to manage this "lazy" context saving.
|
||||
*/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
struct z8_irqstate_s
|
||||
{
|
||||
ubyte state; /* See EZ80_IRQSTATE_* definitions above */
|
||||
chipreg_t *regs; /* Saved register information */
|
||||
};
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Variables
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
/* This structure holds information about the current interrupt processing state */
|
||||
|
||||
extern struct z8_irqstate_s g_z8irqstate;
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Function Prototypes
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C" {
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/* Defined in z8_irq.c */
|
||||
|
||||
EXTERN void up_maskack_irq(int irq);
|
||||
|
||||
/* Defined in z8_saveusercontext.asm */
|
||||
|
||||
EXTERN int z8_saveusercontext(FAR chipreg_t *regs);
|
||||
|
||||
/* Defined in z8_saveirqcontext.c */
|
||||
|
||||
EXTERN void z8_saveirqcontext(FAR chipreg_t *regs);
|
||||
|
||||
/* Defined in z8_restorecontext.asm */
|
||||
|
||||
EXTERN void z8_restorecontext(FAR chipreg_t *regs);
|
||||
|
||||
/* Defined in z8_sigsetup.c */
|
||||
|
||||
EXTERN void z8_sigsetup(FAR _TCB *tcb, sig_deliver_t sigdeliver, FAR chipreg_t *regs);
|
||||
|
||||
/* Defined in z8_registerdump.c */
|
||||
|
||||
EXTERN void z8_registerdump(void);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#endif /* __EZ80_SWITCH_H */
|
||||
Loading…
Reference in New Issue
Block a user