80d19ff404
always use 'M. Warner Losh' for consistency. 'All Rights Reserved.' was prescribed by the Buenos Aires Copyright Convention of 1910, but has been mostly dead since the early 1990's and completely meaningless since 2000 when Nicaragua ratified the Berne convention. Some files not done due to ambiguity of various types.
94 lines
3.3 KiB
C
94 lines
3.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2014 M. Warner Losh.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <arm/at91/at91reg.h>
|
|
#include <arm/at91/at91_smc.h>
|
|
#include <arm/at91/at91sam9260reg.h>
|
|
|
|
/*
|
|
* RD4HW()/WR4HW() read and write at91 hardware register space directly. They
|
|
* serve the same purpose as the RD4()/WR4() idiom you see in many drivers,
|
|
* except that those translate to bus_space calls, but in this code we need to
|
|
* access some devices before bus_space is ready to use. Of course for this to
|
|
* work the appropriate static device mappings need to be made in machdep.c.
|
|
*/
|
|
static inline uint32_t
|
|
RD4HW(uint32_t devbase, uint32_t regoff)
|
|
{
|
|
|
|
return *(volatile uint32_t *)(AT91_BASE + devbase + regoff);
|
|
}
|
|
|
|
|
|
static inline void
|
|
WR4HW(uint32_t devbase, uint32_t regoff, uint32_t val)
|
|
{
|
|
|
|
*(volatile uint32_t *)(AT91_BASE + devbase + regoff) = val;
|
|
}
|
|
|
|
|
|
void
|
|
at91_smc_setup(int id, int cs, const struct at91_smc_init *smc)
|
|
{
|
|
// Need a generic way to get this address for all SoCs... Assume 9260 for now...
|
|
uint32_t base = AT91SAM9260_SMC_BASE + SMC_CS_OFF(cs);
|
|
|
|
WR4HW(base, SMC_SETUP, SMC_SETUP_NCS_RD_SETUP(smc->ncs_rd_setup) |
|
|
SMC_SETUP_NRD_SETUP(smc->nrd_setup) |
|
|
SMC_SETUP_NCS_WR_SETUP(smc->ncs_wr_setup) |
|
|
SMC_SETUP_NWE_SETUP(smc->nwe_setup));
|
|
WR4HW(base, SMC_PULSE, SMC_PULSE_NCS_RD_PULSE(smc->ncs_rd_pulse) |
|
|
SMC_PULSE_NRD_PULSE(smc->nrd_pulse) |
|
|
SMC_PULSE_NCS_WR_PULSE(smc->ncs_wr_pulse) |
|
|
SMC_PULSE_NWE_PULSE(smc->nwe_pulse));
|
|
WR4HW(base, SMC_CYCLE, SMC_CYCLE_NRD_CYCLE(smc->nrd_cycle) |
|
|
SMC_CYCLE_NWE_CYCLE(smc->nwe_cycle));
|
|
WR4HW(base, SMC_MODE, smc->mode | SMC_MODE_TDF_CYCLES(smc->tdf_cycles));
|
|
}
|
|
|
|
void
|
|
at91_ebi_enable(int bank)
|
|
{
|
|
|
|
WR4HW(AT91SAM9260_MATRIX_BASE, AT91SAM9260_EBICSA, (1 << bank) |
|
|
RD4HW(AT91SAM9260_MATRIX_BASE, AT91SAM9260_EBICSA));
|
|
}
|
|
|
|
void
|
|
at91_ebi_disable(int bank)
|
|
{
|
|
|
|
WR4HW(AT91SAM9260_MATRIX_BASE, AT91SAM9260_EBICSA, ~(1 << bank) &
|
|
RD4HW(AT91SAM9260_MATRIX_BASE, AT91SAM9260_EBICSA));
|
|
}
|