371 lines
12 KiB
C
371 lines
12 KiB
C
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef _INCLUDE_LEON_h
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#define _INCLUDE_LEON_h
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#include <asm-leon/leon3.h>
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#include <asm-leon/amba.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* psr defines */
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#define SPARC_PSR_WIN_MASK 0x0000001f /* bit 0-4 */
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#define SPARC_PSR_ET_MASK 0x00000020 /* bit 5 */
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#define SPARC_PSR_PS_MASK 0x00000040 /* bit 6 */
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#define SPARC_PSR_S_MASK 0x00000080 /* bit 7 */
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#define SPARC_PSR_PIL_MASK 0x00000F00 /* bits 8 - 11 */
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#define SPARC_PSR_EF_MASK 0x00001000 /* bit 12 */
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#define SPARC_PSR_EC_MASK 0x00002000 /* bit 13 */
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#define SPARC_PSR_ICC_MASK 0x00F00000 /* bits 20 - 23 */
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#define SPARC_PSR_VER_MASK 0x0F000000 /* bits 24 - 27 */
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#define SPARC_PSR_IMPL_MASK 0xF0000000 /* bits 28 - 31 */
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#define SPARC_PSR_PIL_SHIFT 8
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#define SPARC_NUM_REGWIN _nwindows
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#ifndef __ASSEMBLER__
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extern int _nwindows;
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extern int _leon_version;
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#endif
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#define LEON_VERSION _leon_version
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/*
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* Interrupt Sources
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*
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* The interrupt source numbers directly map to the trap type and to
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* the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask,
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* and the Interrupt Pending Registers.
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*/
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#define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR 1
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#define LEON2_INTERRUPT_UART_2_RX_TX 2
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#define LEON2_INTERRUPT_UART_1_RX_TX 3
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#define LEON23_INTERRUPT_UART_2_RX_TX leon23_irqs[1] /*console.c */
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#define LEON23_INTERRUPT_UART_1_RX_TX leon23_irqs[0] /*console.c */
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#define LEON_INTERRUPT_EXTERNAL_0 4
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#define LEON_INTERRUPT_EXTERNAL_1 5
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#define LEON_INTERRUPT_EXTERNAL_2 6
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#define LEON_INTERRUPT_EXTERNAL_3 7
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#define LEON2_INTERRUPT_TIMER1 8
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#define LEON2_INTERRUPT_TIMER2 9
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#define LEON23_INTERRUPT_TIMER1 leon23_timerirqs[0] /* timer.c */
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#define LEON23_INTERRUPT_TIMER2 leon23_timerirqs[1] /* timer.c */
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#define LEON_INTERRUPT_EMPTY1 10
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#define LEON_INTERRUPT_EMPTY2 11
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#define LEON_INTERRUPT_EMPTY3 12
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#define LEON_INTERRUPT_EMPTY4 13
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#define LEON_INTERRUPT_EMPTY5 14
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#define LEON_INTERRUPT_EMPTY6 15
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#ifndef __ASSEMBLER__
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/*
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* Trap Types for on-chip peripherals
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*
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* Source: Table 8 - Interrupt Trap Type and Default Priority Assignments
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*
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* NOTE: The priority level for each source corresponds to the least
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* significant nibble of the trap type.
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*/
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#define LEON_TRAP_TYPE( _source ) SPARC_ASYNCHRONOUS_TRAP((_source) + 0x10)
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#define LEON_TRAP_SOURCE( _trap ) ((_trap) - 0x10)
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#define LEON_INT_TRAP( _trap ) \
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( (_trap) >= LEON_TRAP_TYPE( LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR ) && \
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(_trap) <= LEON_TRAP_TYPE( LEON_INTERRUPT_EMPTY6 ) )
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#endif
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/*
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* The following defines the bits in Memory Configuration Register 1.
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*/
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#define LEON_MEMORY_CONFIGURATION_PROM_SIZE_MASK 0x0003C000
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/*
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* The following defines the bits in Memory Configuration Register 1.
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*/
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#define LEON_MEMORY_CONFIGURATION_RAM_SIZE_MASK 0x00001E00
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/*
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* The following defines the bits in the Timer Control Register.
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*/
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#define LEON_REG_TIMER_CONTROL_EN 0x00000001 /* 1 = enable counting */
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/* 0 = hold scalar and counter */
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#define LEON_REG_TIMER_CONTROL_RL 0x00000002 /* 1 = reload at 0 */
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/* 0 = stop at 0 */
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#define LEON_REG_TIMER_CONTROL_LD 0x00000004 /* 1 = load counter */
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/* 0 = no function */
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/*
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* The following defines the bits in the UART Control Registers.
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*
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*/
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#define LEON_REG_UART_CONTROL_RTD 0x000000FF /* RX/TX data */
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/*
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* The following defines the bits in the LEON UART Status Registers.
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*/
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#define LEON_REG_UART_STATUS_DR 0x00000001 /* Data Ready */
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#define LEON_REG_UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
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#define LEON_REG_UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
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#define LEON_REG_UART_STATUS_BR 0x00000008 /* Break Error */
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#define LEON_REG_UART_STATUS_OE 0x00000010 /* RX Overrun Error */
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#define LEON_REG_UART_STATUS_PE 0x00000020 /* RX Parity Error */
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#define LEON_REG_UART_STATUS_FE 0x00000040 /* RX Framing Error */
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#define LEON_REG_UART_STATUS_ERR 0x00000078 /* Error Mask */
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/*
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* The following defines the bits in the LEON UART Status Registers.
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*/
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#define LEON_REG_UART_CTRL_RE 0x00000001 /* Receiver enable */
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#define LEON_REG_UART_CTRL_TE 0x00000002 /* Transmitter enable */
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#define LEON_REG_UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
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#define LEON_REG_UART_CTRL_TI 0x00000008 /* Transmitter interrupt enable */
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#define LEON_REG_UART_CTRL_PS 0x00000010 /* Parity select */
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#define LEON_REG_UART_CTRL_PE 0x00000020 /* Parity enable */
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#define LEON_REG_UART_CTRL_FL 0x00000040 /* Flow control enable */
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#define LEON_REG_UART_CTRL_LB 0x00000080 /* Loop Back enable */
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/* leon2 asis */
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#define ASI_LEON2_IFLUSH 0x05
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#define ASI_LEON2_DFLUSH 0x06
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#define ASI_LEON2_CACHEMISS 1
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/* leon3 asis */
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#define ASI_LEON3_IFLUSH 0x10
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#define ASI_LEON3_DFLUSH 0x11
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#define ASI_LEON3_CACHEMISS 1
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#define ASI_LEON3_SYSCTRL 0x02
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#define ASI_LEON23_ITAG 0x0c
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#define ASI_LEON23_DTAG 0x0e
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#ifndef __ASSEMBLER__
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unsigned int leonbare_leon23_loadnocache (unsigned int addr);
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unsigned int leonbare_leon23_loadnocache16 (unsigned int addr);
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unsigned int leonbare_leon23_loadnocache8 (unsigned int addr);
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unsigned int leonbare_leon23_storenocache (unsigned int addr,
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unsigned int value);
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unsigned int leonbare_leon23_storenocache16 (unsigned int addr,
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unsigned int value);
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unsigned int leonbare_leon23_storenocache8 (unsigned int addr,
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unsigned int value);
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unsigned int leonbare_leon3_loadnocache (unsigned int addr);
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unsigned int leonbare_leon3_loadnocache16 (unsigned int addr);
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unsigned int leonbare_leon3_loadnocache8 (unsigned int addr);
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/*
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* This is used to manipulate the on-chip registers.
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*
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* The following symbol must be defined in the linkcmds file and point
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* to the correct location.
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*/
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extern unsigned long *LEON23_IRQ_mask_addr; /* in peripherals.h */
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extern unsigned long *LEON23_IRQ_force_addr; /* in peripherals.h */
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extern unsigned long *LEON23_IRQ_pending_addr; /* in peripherals.h */
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extern unsigned long *LEON23_IRQ_clear_addr; /* in peripherals.h */
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/*
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* Macros to manipulate the Interrupt Clear, Interrupt Force, Interrupt Mask,
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* and the Interrupt Pending Registers.
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*
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* NOTE: For operations which are not atomic, this code disables interrupts
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* to guarantee there are no intervening accesses to the same register.
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* The operations which read the register, modify the value and then
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* store the result back are vulnerable.
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*/
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#define LEON_Clear_interrupt( _source ) \
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do { \
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(*LEON23_IRQ_clear_addr) = (1 << (_source)); \
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} while (0)
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#define LEON_Force_interrupt( _source ) \
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do { \
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(*LEON23_IRQ_force_addr) = (1 << (_source)); \
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} while (0)
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#define LEON_Is_interrupt_masked( _source ) \
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((*LEON23_IRQ_mask_addr) & (1 << (_source)))
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#define LEON_Mask_interrupt( _source ) \
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do { \
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unsigned32 _level; \
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\
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_level = sparc_disable_interrupts(); \
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(*LEON23_IRQ_mask_addr) &= ~(1 << (_source)); \
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sparc_enable_interrupts( _level ); \
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} while (0)
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#define LEON_Unmask_interrupt( _source ) \
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do { \
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unsigned32 _level; \
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\
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_level = sparc_disable_interrupts(); \
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(*LEON23_IRQ_mask_addr) |= (1 << (_source)); \
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sparc_enable_interrupts( _level ); \
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} while (0)
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#define LEON_Disable_interrupt( _source, _previous ) \
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do { \
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unsigned32 _level; \
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unsigned32 _mask = 1 << (_source); \
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\
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_level = sparc_disable_interrupts(); \
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(_previous) = (*LEON23_IRQ_mask_addr); \
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(*LEON23_IRQ_mask_addr) = _previous & ~_mask; \
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sparc_enable_interrupts( _level ); \
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(_previous) &= _mask; \
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} while (0)
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#define LEON_Restore_interrupt( _source, _previous ) \
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do { \
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unsigned32 _level; \
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unsigned32 _mask = 1 << (_source); \
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\
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_level = sparc_disable_interrupts(); \
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(*LEON23_IRQ_mask_addr) = \
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((*LEON23_IRQ_mask_addr) & ~_mask) | (_previous); \
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sparc_enable_interrupts( _level ); \
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} while (0)
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/*
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* Each timer control register is organized as follows:
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*
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* D0 - Enable
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* 1 = enable counting
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* 0 = hold scaler and counter
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*
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* D1 - Counter Reload
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* 1 = reload counter at zero and restart
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* 0 = stop counter at zero
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*
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* D2 - Counter Load
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* 1 = load counter with preset value
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* 0 = no function
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*
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*/
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#define LEON_REG_TIMER_COUNTER_IRQEN 0x00000008
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#define LEON_REG_TIMER_COUNTER_RELOAD_AT_ZERO 0x00000002
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#define LEON_REG_TIMER_COUNTER_STOP_AT_ZERO 0x00000000
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#define LEON_REG_TIMER_COUNTER_LOAD_COUNTER 0x00000004
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#define LEON_REG_TIMER_COUNTER_ENABLE_COUNTING 0x00000001
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#define LEON_REG_TIMER_COUNTER_DISABLE_COUNTING 0x00000000
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#define LEON_REG_TIMER_COUNTER_RELOAD_MASK 0x00000002
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#define LEON_REG_TIMER_COUNTER_ENABLE_MASK 0x00000001
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#define LEON_REG_TIMER_COUNTER_DEFINED_MASK 0x00000003
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#define LEON_REG_TIMER_COUNTER_CURRENT_MODE_MASK 0x00000003
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/* console.c */
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int lo_sprintf (char *buf, const char *fmt, ...);
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/* do a virtual address read without cache */
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static __inline__ unsigned long leon23_getpsr ()
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{
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unsigned long retval;
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__asm__ __volatile__ ("mov %%psr, %0\n\t":"=r" (retval):);
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return retval;
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}
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extern __inline__ void sparc_leon2_dcache_flush (void)
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{
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__asm__
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__volatile__ ("sta %%g0, [%%g0] %0\n\t"::"i"
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(ASI_LEON2_IFLUSH):"memory");
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__asm__
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__volatile__ ("sta %%g0, [%%g0] %0\n\t"::"i"
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(ASI_LEON2_DFLUSH):"memory");
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};
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extern __inline__ void sparc_leon_dcache_flush (void)
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{
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switch (sparc_leon23_get_psr_version ())
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{
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case 0:
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case 2:
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sparc_leon2_dcache_flush ();
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break;
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default:
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sparc_leon3_dcache_flush ();
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break;
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}
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}
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extern int lolevelirqinstall (int irqnr, void (*handler) ());
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extern unsigned long locore_readtbr ();
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extern void _leonbase_Stop ();
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extern void uninstall_winoverflow_hook ();
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extern int install_winoverflow_hook (void (*func) (void));
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extern void sparc_leon23_icache_flush ();
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extern void sparc_leon23_dcache_flush ();
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#endif /* ! __ASSEMBLER__ */
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#ifdef __cplusplus
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}
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#endif
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#define TACODE_IRQCALL 2
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#define TACODE_IRQCALL_FLUSH 6
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#define TACODE_FLUSH 3
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#define TACODE_IRQCALLDIS 5
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#endif /* !_INCLUDE_LEON_h */
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/* end of include file */
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