mirror of https://gitee.com/openkylin/linux.git
257 lines
7.1 KiB
C
257 lines
7.1 KiB
C
/*
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* Copyright (C) 1999,2000 Arm Limited
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* Copyright (C) 2000 Deep Blue Solutions Ltd
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* Copyright (C) 2002 Shane Nay (shane@minirl.com)
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* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* - add MX31 specific definitions
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <asm/pgtable.h>
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#include <asm/hardware/cache-l2x0.h>
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#include <asm/mach/map.h>
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#include <mach/common.h>
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#include <mach/devices-common.h>
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#include <mach/hardware.h>
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#include <mach/iomux-v3.h>
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#include <mach/irqs.h>
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static void imx3_idle(void)
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{
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unsigned long reg = 0;
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__asm__ __volatile__(
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/* disable I and D cache */
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"mrc p15, 0, %0, c1, c0, 0\n"
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"bic %0, %0, #0x00001000\n"
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"bic %0, %0, #0x00000004\n"
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"mcr p15, 0, %0, c1, c0, 0\n"
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/* invalidate I cache */
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"mov %0, #0\n"
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"mcr p15, 0, %0, c7, c5, 0\n"
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/* clear and invalidate D cache */
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"mov %0, #0\n"
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"mcr p15, 0, %0, c7, c14, 0\n"
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/* WFI */
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"mov %0, #0\n"
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"mcr p15, 0, %0, c7, c0, 4\n"
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"nop\n" "nop\n" "nop\n" "nop\n"
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"nop\n" "nop\n" "nop\n"
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/* enable I and D cache */
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"mrc p15, 0, %0, c1, c0, 0\n"
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"orr %0, %0, #0x00001000\n"
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"orr %0, %0, #0x00000004\n"
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"mcr p15, 0, %0, c1, c0, 0\n"
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: "=r" (reg));
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}
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static void __iomem *imx3_ioremap(unsigned long phys_addr, size_t size,
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unsigned int mtype)
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{
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if (mtype == MT_DEVICE) {
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/*
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* Access all peripherals below 0x80000000 as nonshared device
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* on mx3, but leave l2cc alone. Otherwise cache corruptions
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* can occur.
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*/
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if (phys_addr < 0x80000000 &&
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!addr_in_module(phys_addr, MX3x_L2CC))
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mtype = MT_DEVICE_NONSHARED;
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}
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return __arm_ioremap(phys_addr, size, mtype);
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}
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void imx3_init_l2x0(void)
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{
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void __iomem *l2x0_base;
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void __iomem *clkctl_base;
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/*
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* First of all, we must repair broken chip settings. There are some
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* i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
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* misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
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* Workaraound is to setup the correct register setting prior enabling the
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* L2 cache. This should not hurt already working CPUs, as they are using the
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* same value.
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*/
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#define L2_MEM_VAL 0x10
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clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
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if (clkctl_base != NULL) {
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writel(0x00000515, clkctl_base + L2_MEM_VAL);
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iounmap(clkctl_base);
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} else {
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pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
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}
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l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
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if (IS_ERR(l2x0_base)) {
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printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
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PTR_ERR(l2x0_base));
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return;
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}
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l2x0_init(l2x0_base, 0x00030024, 0x00000000);
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}
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static struct map_desc mx31_io_desc[] __initdata = {
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imx_map_entry(MX31, X_MEMC, MT_DEVICE),
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imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
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imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
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imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
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imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
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};
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/*
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* This function initializes the memory map. It is called during the
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* system startup to create static physical to virtual memory mappings
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* for the IO modules.
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*/
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void __init mx31_map_io(void)
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{
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iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
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}
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static struct map_desc mx35_io_desc[] __initdata = {
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imx_map_entry(MX35, X_MEMC, MT_DEVICE),
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imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
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imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
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imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
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imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
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};
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void __init mx35_map_io(void)
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{
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iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
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}
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void __init imx31_init_early(void)
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{
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mxc_set_cpu_type(MXC_CPU_MX31);
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mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
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imx_idle = imx3_idle;
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imx_ioremap = imx3_ioremap;
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}
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void __init imx35_init_early(void)
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{
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mxc_set_cpu_type(MXC_CPU_MX35);
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mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
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mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
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imx_idle = imx3_idle;
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imx_ioremap = imx3_ioremap;
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}
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void __init mx31_init_irq(void)
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{
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mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
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}
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void __init mx35_init_irq(void)
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{
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mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
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}
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static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
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.per_2_per_addr = 1677,
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};
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static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
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.ap_2_ap_addr = 423,
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.ap_2_bp_addr = 829,
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.bp_2_ap_addr = 1029,
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};
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static struct sdma_platform_data imx31_sdma_pdata __initdata = {
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.fw_name = "sdma-imx31-to2.bin",
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.script_addrs = &imx31_to2_sdma_script,
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};
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void __init imx31_soc_init(void)
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{
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int to_version = mx31_revision() >> 4;
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imx3_init_l2x0();
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mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
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mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
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mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
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if (to_version == 1) {
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strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
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strlen(imx31_sdma_pdata.fw_name));
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imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
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}
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imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
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}
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static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
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.ap_2_ap_addr = 642,
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.uart_2_mcu_addr = 817,
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.mcu_2_app_addr = 747,
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.uartsh_2_mcu_addr = 1183,
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.per_2_shp_addr = 1033,
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.mcu_2_shp_addr = 961,
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.ata_2_mcu_addr = 1333,
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.mcu_2_ata_addr = 1252,
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.app_2_mcu_addr = 683,
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.shp_2_per_addr = 1111,
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.shp_2_mcu_addr = 892,
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};
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static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
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.ap_2_ap_addr = 729,
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.uart_2_mcu_addr = 904,
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.per_2_app_addr = 1597,
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.mcu_2_app_addr = 834,
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.uartsh_2_mcu_addr = 1270,
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.per_2_shp_addr = 1120,
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.mcu_2_shp_addr = 1048,
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.ata_2_mcu_addr = 1429,
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.mcu_2_ata_addr = 1339,
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.app_2_per_addr = 1531,
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.app_2_mcu_addr = 770,
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.shp_2_per_addr = 1198,
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.shp_2_mcu_addr = 979,
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};
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static struct sdma_platform_data imx35_sdma_pdata __initdata = {
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.fw_name = "sdma-imx35-to2.bin",
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.script_addrs = &imx35_to2_sdma_script,
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};
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void __init imx35_soc_init(void)
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{
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int to_version = mx35_revision() >> 4;
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imx3_init_l2x0();
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/* i.mx35 has the i.mx31 type gpio */
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mxc_register_gpio("imx31-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
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mxc_register_gpio("imx31-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
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mxc_register_gpio("imx31-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
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if (to_version == 1) {
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strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin",
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strlen(imx35_sdma_pdata.fw_name));
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imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
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}
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imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
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}
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