From 52c543f90c4095dff71dc125017594b61a753069 Mon Sep 17 00:00:00 2001 From: Quinn Jensen Date: Mon, 9 Jul 2007 22:06:53 +0100 Subject: [ARM] 4461/1: MXC platform and i.MX31ADS core support This patch adds the foundation pieces for the Freescale MXC platforms, including i.MX2 and i.MX3 based systems. The bare-bones MX31 support in this patch boots to the rootdev panic with 8250 serial console configured "console=ttyS0,115200". It assumes that Redboot is the boot loader. Signed-off-by: Quinn Jensen Acked-by: Lennert Buytenhek Signed-off-by: Russell King --- arch/arm/mach-mx3/mx31ads.c | 142 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 arch/arm/mach-mx3/mx31ads.c (limited to 'arch/arm/mach-mx3/mx31ads.c') diff --git a/arch/arm/mach-mx3/mx31ads.c b/arch/arm/mach-mx3/mx31ads.c new file mode 100644 index 00000000000..7e89bdc23a9 --- /dev/null +++ b/arch/arm/mach-mx3/mx31ads.c @@ -0,0 +1,142 @@ +/* + * Copyright (C) 2000 Deep Blue Solutions Ltd + * Copyright (C) 2002 Shane Nay (shane@minirl.com) + * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/*! + * @file mx31ads.c + * + * @brief This file contains the board-specific initialization routines. + * + * @ingroup System + */ + +#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE) +/*! + * The serial port definition structure. + */ +static struct plat_serial8250_port serial_platform_data[] = { + { + .membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA), + .mapbase = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTA), + .irq = EXPIO_INT_XUART_INTA, + .uartclk = 14745600, + .regshift = 0, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ, + }, { + .membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB), + .mapbase = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTB), + .irq = EXPIO_INT_XUART_INTB, + .uartclk = 14745600, + .regshift = 0, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ, + }, + {}, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = 0, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +static int __init mxc_init_extuart(void) +{ + return platform_device_register(&serial_device); +} +#else +static inline int mxc_init_extuart(void) +{ + return 0; +} +#endif + +/*! + * This structure defines static mappings for the i.MX31ADS board. + */ +static struct map_desc mx31ads_io_desc[] __initdata = { + { + .virtual = AIPS1_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(AIPS1_BASE_ADDR), + .length = AIPS1_SIZE, + .type = MT_NONSHARED_DEVICE + }, { + .virtual = SPBA0_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(SPBA0_BASE_ADDR), + .length = SPBA0_SIZE, + .type = MT_NONSHARED_DEVICE + }, { + .virtual = AIPS2_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(AIPS2_BASE_ADDR), + .length = AIPS2_SIZE, + .type = MT_NONSHARED_DEVICE + }, { + .virtual = CS4_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(CS4_BASE_ADDR), + .length = CS4_SIZE / 2, + .type = MT_DEVICE + }, +}; + +/*! + * Set up static virtual mappings. + */ +void __init mx31ads_map_io(void) +{ + mxc_map_io(); + iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc)); +} + +/*! + * Board specific initialization. + */ +static void __init mxc_board_init(void) +{ + mxc_init_extuart(); +} + +/* + * The following uses standard kernel macros defined in arch.h in order to + * initialize __mach_desc_MX31ADS data structure. + */ +MACHINE_START(MX31ADS, "Freescale MX31ADS") + /* Maintainer: Freescale Semiconductor, Inc. */ + .phys_io = AIPS1_BASE_ADDR, + .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc, + .boot_params = PHYS_OFFSET + 0x100, + .map_io = mx31ads_map_io, + .init_irq = mxc_init_irq, + .init_machine = mxc_board_init, + .timer = &mxc_timer, +MACHINE_END -- cgit v1.2.3