126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/arch/arm/mach-ep93xx/micro9.c
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*
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* Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
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* Manfred Gruber <m.gruber@tirol.com>
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* Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
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* Hubert Feurstein <hubert.feurstein@contec.at>
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include "hardware.h"
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include "soc.h"
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/*************************************************************************
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* Micro9 NOR Flash
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*
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* Micro9-High has up to 64MB of 32-bit flash on CS1
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* Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
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* Micro9-Lite uses a separate MTD map driver for flash support
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* Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
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*************************************************************************/
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static unsigned int __init micro9_detect_bootwidth(void)
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{
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u32 v;
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/* Detect the bus width of the external flash memory */
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v = __raw_readl(EP93XX_SYSCON_SYSCFG);
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if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
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return 4; /* 32-bit */
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else
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return 2; /* 16-bit */
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}
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static void __init micro9_register_flash(void)
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{
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unsigned int width;
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if (machine_is_micro9())
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width = 4;
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else if (machine_is_micro9m() || machine_is_micro9s())
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width = micro9_detect_bootwidth();
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else
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width = 0;
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if (width)
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ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);
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}
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/*************************************************************************
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* Micro9 Ethernet
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*************************************************************************/
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static struct ep93xx_eth_data __initdata micro9_eth_data = {
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.phy_id = 0x1f,
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};
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static void __init micro9_init_machine(void)
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{
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ep93xx_init_devices();
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ep93xx_register_eth(µ9_eth_data, 1);
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micro9_register_flash();
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}
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#ifdef CONFIG_MACH_MICRO9H
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MACHINE_START(MICRO9, "Contec Micro9-High")
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/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
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.atag_offset = 0x100,
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.nr_irqs = NR_EP93XX_IRQS,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.init_time = ep93xx_timer_init,
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.init_machine = micro9_init_machine,
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.restart = ep93xx_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_MICRO9M
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MACHINE_START(MICRO9M, "Contec Micro9-Mid")
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/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
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.atag_offset = 0x100,
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.nr_irqs = NR_EP93XX_IRQS,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.init_time = ep93xx_timer_init,
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.init_machine = micro9_init_machine,
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.restart = ep93xx_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_MICRO9L
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MACHINE_START(MICRO9L, "Contec Micro9-Lite")
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/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
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.atag_offset = 0x100,
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.nr_irqs = NR_EP93XX_IRQS,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.init_time = ep93xx_timer_init,
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.init_machine = micro9_init_machine,
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.restart = ep93xx_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_MICRO9S
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MACHINE_START(MICRO9S, "Contec Micro9-Slim")
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/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
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.atag_offset = 0x100,
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.nr_irqs = NR_EP93XX_IRQS,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.init_time = ep93xx_timer_init,
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.init_machine = micro9_init_machine,
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.restart = ep93xx_restart,
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MACHINE_END
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#endif
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