af3dc4a7ca
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2014 M. Warner Losh. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#ifndef ARM_AT91_AT91_SMC_H
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#define ARM_AT91_AT91_SMC_H
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/* Registers */
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#define SMC_SETUP 0x00
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#define SMC_PULSE 0x04
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#define SMC_CYCLE 0x08
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#define SMC_MODE 0x0C
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#define SMC_CS_OFF(cs) (0x10 * (cs))
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/* Setup */
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#define SMC_SETUP_NCS_RD_SETUP(x) ((x) << 24)
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#define SMC_SETUP_NRD_SETUP(x) ((x) << 16)
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#define SMC_SETUP_NCS_WR_SETUP(x) ((x) << 8)
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#define SMC_SETUP_NWE_SETUP(x) (x)
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/* Pulse */
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#define SMC_PULSE_NCS_RD_PULSE(x) ((x) << 24)
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#define SMC_PULSE_NRD_PULSE(x) ((x) << 16)
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#define SMC_PULSE_NCS_WR_PULSE(x) ((x) << 8)
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#define SMC_PULSE_NWE_PULSE(x) (x)
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/* Cycle */
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#define SMC_CYCLE_NRD_CYCLE(x) ((x) << 16)
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#define SMC_CYCLE_NWE_CYCLE(x) (x)
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/* Mode */
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#define SMC_MODE_READ (1 << 0)
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#define SMC_MODE_WRITE (1 << 1)
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#define SMC_MODE_EXNW_DISABLED (0 << 4)
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#define SMC_MODE_EXNW_FROZEN_MODE (2 << 4)
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#define SMC_MODE_EXNW_READY_MODE (3 << 4)
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#define SMC_MODE_BAT (1 << 8)
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#define SMC_MODE_DBW_8BIT (0 << 12)
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#define SMC_MODE_DBW_16BIT (1 << 12)
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#define SMC_MODE_DBW_32_BIT (2 << 12)
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#define SMC_MODE_TDF_CYCLES(x) ((x) << 16)
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#define SMC_MODE_TDF_MODE (1 << 20)
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#define SMC_MODE_PMEN (1 << 24)
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#define SMC_PS_4BYTE (0 << 28)
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#define SMC_PS_8BYTE (1 << 28)
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#define SMC_PS_16BYTE (2 << 28)
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#define SMC_PS_32BYTE (3 << 28)
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/*
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* structure to ease init. See the SMC chapter in the datasheet for
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* the appropriate SoC you are using for details.
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*/
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struct at91_smc_init
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{
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/* Setup register */
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uint8_t ncs_rd_setup;
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uint8_t nrd_setup;
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uint8_t ncs_wr_setup;
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uint8_t nwe_setup;
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/* Pulse register */
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uint8_t ncs_rd_pulse;
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uint8_t nrd_pulse;
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uint8_t ncs_wr_pulse;
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uint8_t nwe_pulse;
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/* Cycle register */
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uint16_t nrd_cycle;
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uint16_t nwe_cycle;
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/* Mode register */
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uint8_t mode; /* Combo of READ/WRITE/EXNW fields */
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uint8_t bat;
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uint8_t dwb;
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uint8_t tdf_cycles;
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uint8_t tdf_mode;
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uint8_t pmen;
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uint8_t ps;
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};
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/*
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* Convenience routine to fill in SMC registers for a given chip select.
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*/
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void at91_smc_setup(int id, int cs, const struct at91_smc_init *smc);
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/*
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* Disable/Enable different External Bus Interfaces (EBI)
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*/
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void at91_ebi_enable(int cs);
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void at91_ebi_disable(int cs);
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#endif /* ARM_AT91_AT91_SMC_H */
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