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[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 <[email protected]> Acked-by: Lennert Buytenhek <[email protected]> Signed-off-by: Russell King <[email protected]>
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Quinn Jensen
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Russell King
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Jul 22, 2007
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| menu "MX3 Options" | ||
| depends on ARCH_MX3 | ||
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| config MACH_MX31ADS | ||
| bool "Support MX31ADS platforms" | ||
| default y | ||
| help | ||
| Include support for MX31ADS platform. This includes specific | ||
| configurations for the board and its peripherals. | ||
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| endmenu | ||
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| # | ||
| # Makefile for the linux kernel. | ||
| # | ||
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| # Object file lists. | ||
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| obj-y := mm.o time.o | ||
| obj-$(CONFIG_MACH_MX31ADS) += mx31ads.o |
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| zreladdr-y := 0x80008000 | ||
| params_phys-y := 0x80000100 | ||
| initrd_phys-y := 0x80800000 |
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| /* | ||
| * Copyright (C) 1999,2000 Arm Limited | ||
| * Copyright (C) 2000 Deep Blue Solutions Ltd | ||
| * Copyright (C) 2002 Shane Nay ([email protected]) | ||
| * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved. | ||
| * - add MX31 specific definitions | ||
| * | ||
| * 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 | ||
| */ | ||
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| #include <linux/mm.h> | ||
| #include <linux/init.h> | ||
| #include <asm/hardware.h> | ||
| #include <asm/pgtable.h> | ||
| #include <asm/mach/map.h> | ||
| #include <asm/arch/common.h> | ||
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| /*! | ||
| * @file mm.c | ||
| * | ||
| * @brief This file creates static virtual to physical mappings, common to all MX3 boards. | ||
| * | ||
| * @ingroup Memory | ||
| */ | ||
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| /*! | ||
| * This table defines static virtual address mappings for I/O regions. | ||
| * These are the mappings common across all MX3 boards. | ||
| */ | ||
| static struct map_desc mxc_io_desc[] __initdata = { | ||
| { | ||
| .virtual = X_MEMC_BASE_ADDR_VIRT, | ||
| .pfn = __phys_to_pfn(X_MEMC_BASE_ADDR), | ||
| .length = X_MEMC_SIZE, | ||
| .type = MT_DEVICE | ||
| }, { | ||
| .virtual = AVIC_BASE_ADDR_VIRT, | ||
| .pfn = __phys_to_pfn(AVIC_BASE_ADDR), | ||
| .length = AVIC_SIZE, | ||
| .type = MT_NONSHARED_DEVICE | ||
| }, | ||
| }; | ||
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| /*! | ||
| * This function initializes the memory map. It is called during the | ||
| * system startup to create static physical to virtual memory mappings | ||
| * for the IO modules. | ||
| */ | ||
| void __init mxc_map_io(void) | ||
| { | ||
| iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc)); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,142 @@ | ||
| /* | ||
| * Copyright (C) 2000 Deep Blue Solutions Ltd | ||
| * Copyright (C) 2002 Shane Nay ([email protected]) | ||
| * 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 | ||
| */ | ||
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| #include <linux/types.h> | ||
| #include <linux/init.h> | ||
| #include <linux/clk.h> | ||
| #include <linux/serial_8250.h> | ||
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| #include <asm/hardware.h> | ||
| #include <asm/mach-types.h> | ||
| #include <asm/mach/arch.h> | ||
| #include <asm/memory.h> | ||
| #include <asm/mach/map.h> | ||
| #include <asm/arch/common.h> | ||
|
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| /*! | ||
| * @file mx31ads.c | ||
| * | ||
| * @brief This file contains the board-specific initialization routines. | ||
| * | ||
| * @ingroup System | ||
| */ | ||
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| #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, | ||
| }, | ||
| {}, | ||
| }; | ||
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| static struct platform_device serial_device = { | ||
| .name = "serial8250", | ||
| .id = 0, | ||
| .dev = { | ||
| .platform_data = serial_platform_data, | ||
| }, | ||
| }; | ||
|
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| static int __init mxc_init_extuart(void) | ||
| { | ||
| return platform_device_register(&serial_device); | ||
| } | ||
| #else | ||
| static inline int mxc_init_extuart(void) | ||
| { | ||
| return 0; | ||
| } | ||
| #endif | ||
|
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| /*! | ||
| * 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 | ||
| }, | ||
| }; | ||
|
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| /*! | ||
| * Set up static virtual mappings. | ||
| */ | ||
| void __init mx31ads_map_io(void) | ||
| { | ||
| mxc_map_io(); | ||
| iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc)); | ||
| } | ||
|
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| /*! | ||
| * Board specific initialization. | ||
| */ | ||
| static void __init mxc_board_init(void) | ||
| { | ||
| mxc_init_extuart(); | ||
| } | ||
|
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| /* | ||
| * 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 |
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