diff options
Diffstat (limited to 'arch/arm/mach-ep93xx/micro9.c')
| -rw-r--r-- | arch/arm/mach-ep93xx/micro9.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/micro9.c b/arch/arm/mach-ep93xx/micro9.c new file mode 100644 index 000000000..c121c459a --- /dev/null +++ b/arch/arm/mach-ep93xx/micro9.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/arch/arm/mach-ep93xx/micro9.c + * + * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH + * Manfred Gruber <m.gruber@tirol.com> + * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH + * Hubert Feurstein <hubert.feurstein@contec.at> + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include "hardware.h" + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +#include "soc.h" + +/************************************************************************* + * Micro9 NOR Flash + * + * Micro9-High has up to 64MB of 32-bit flash on CS1 + * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1 + * Micro9-Lite uses a separate MTD map driver for flash support + * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1 + *************************************************************************/ +static unsigned int __init micro9_detect_bootwidth(void) +{ + u32 v; + + /* Detect the bus width of the external flash memory */ + v = __raw_readl(EP93XX_SYSCON_SYSCFG); + if (v & EP93XX_SYSCON_SYSCFG_LCSN7) + return 4; /* 32-bit */ + else + return 2; /* 16-bit */ +} + +static void __init micro9_register_flash(void) +{ + unsigned int width; + + if (machine_is_micro9()) + width = 4; + else if (machine_is_micro9m() || machine_is_micro9s()) + width = micro9_detect_bootwidth(); + else + width = 0; + + if (width) + ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M); +} + + +/************************************************************************* + * Micro9 Ethernet + *************************************************************************/ +static struct ep93xx_eth_data __initdata micro9_eth_data = { + .phy_id = 0x1f, +}; + + +static void __init micro9_init_machine(void) +{ + ep93xx_init_devices(); + ep93xx_register_eth(µ9_eth_data, 1); + micro9_register_flash(); +} + + +#ifdef CONFIG_MACH_MICRO9H +MACHINE_START(MICRO9, "Contec Micro9-High") + /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */ + .atag_offset = 0x100, + .nr_irqs = NR_EP93XX_IRQS, + .map_io = ep93xx_map_io, + .init_irq = ep93xx_init_irq, + .init_time = ep93xx_timer_init, + .init_machine = micro9_init_machine, + .restart = ep93xx_restart, +MACHINE_END +#endif + +#ifdef CONFIG_MACH_MICRO9M +MACHINE_START(MICRO9M, "Contec Micro9-Mid") + /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */ + .atag_offset = 0x100, + .nr_irqs = NR_EP93XX_IRQS, + .map_io = ep93xx_map_io, + .init_irq = ep93xx_init_irq, + .init_time = ep93xx_timer_init, + .init_machine = micro9_init_machine, + .restart = ep93xx_restart, +MACHINE_END +#endif + +#ifdef CONFIG_MACH_MICRO9L +MACHINE_START(MICRO9L, "Contec Micro9-Lite") + /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */ + .atag_offset = 0x100, + .nr_irqs = NR_EP93XX_IRQS, + .map_io = ep93xx_map_io, + .init_irq = ep93xx_init_irq, + .init_time = ep93xx_timer_init, + .init_machine = micro9_init_machine, + .restart = ep93xx_restart, +MACHINE_END +#endif + +#ifdef CONFIG_MACH_MICRO9S +MACHINE_START(MICRO9S, "Contec Micro9-Slim") + /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */ + .atag_offset = 0x100, + .nr_irqs = NR_EP93XX_IRQS, + .map_io = ep93xx_map_io, + .init_irq = ep93xx_init_irq, + .init_time = ep93xx_timer_init, + .init_machine = micro9_init_machine, + .restart = ep93xx_restart, +MACHINE_END +#endif |