| /* |
| * Copyright (C) 1999,2000 Arm Limited |
| * Copyright (C) 2000 Deep Blue Solutions Ltd |
| * Copyright (C) 2002 Shane Nay (shane@minirl.com) |
| * 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. |
| */ |
| |
| #include <linux/mm.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/pinctrl/machine.h> |
| |
| #include <asm/pgtable.h> |
| #include <asm/system_misc.h> |
| #include <asm/hardware/cache-l2x0.h> |
| #include <asm/mach/map.h> |
| |
| #include <mach/common.h> |
| #include <mach/devices-common.h> |
| #include <mach/hardware.h> |
| #include <mach/iomux-v3.h> |
| #include <mach/irqs.h> |
| |
| #include "crmregs-imx3.h" |
| |
| void __iomem *mx3_ccm_base; |
| |
| static void imx3_idle(void) |
| { |
| unsigned long reg = 0; |
| |
| mx3_cpu_lp_set(MX3_WAIT); |
| |
| __asm__ __volatile__( |
| /* disable I and D cache */ |
| "mrc p15, 0, %0, c1, c0, 0\n" |
| "bic %0, %0, #0x00001000\n" |
| "bic %0, %0, #0x00000004\n" |
| "mcr p15, 0, %0, c1, c0, 0\n" |
| /* invalidate I cache */ |
| "mov %0, #0\n" |
| "mcr p15, 0, %0, c7, c5, 0\n" |
| /* clear and invalidate D cache */ |
| "mov %0, #0\n" |
| "mcr p15, 0, %0, c7, c14, 0\n" |
| /* WFI */ |
| "mov %0, #0\n" |
| "mcr p15, 0, %0, c7, c0, 4\n" |
| "nop\n" "nop\n" "nop\n" "nop\n" |
| "nop\n" "nop\n" "nop\n" |
| /* enable I and D cache */ |
| "mrc p15, 0, %0, c1, c0, 0\n" |
| "orr %0, %0, #0x00001000\n" |
| "orr %0, %0, #0x00000004\n" |
| "mcr p15, 0, %0, c1, c0, 0\n" |
| : "=r" (reg)); |
| } |
| |
| static void __iomem *imx3_ioremap_caller(unsigned long phys_addr, size_t size, |
| unsigned int mtype, void *caller) |
| { |
| if (mtype == MT_DEVICE) { |
| /* |
| * Access all peripherals below 0x80000000 as nonshared device |
| * on mx3, but leave l2cc alone. Otherwise cache corruptions |
| * can occur. |
| */ |
| if (phys_addr < 0x80000000 && |
| !addr_in_module(phys_addr, MX3x_L2CC)) |
| mtype = MT_DEVICE_NONSHARED; |
| } |
| |
| return __arm_ioremap_caller(phys_addr, size, mtype, caller); |
| } |
| |
| void __init imx3_init_l2x0(void) |
| { |
| #ifdef CONFIG_CACHE_L2X0 |
| void __iomem *l2x0_base; |
| void __iomem *clkctl_base; |
| |
| /* |
| * First of all, we must repair broken chip settings. There are some |
| * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These |
| * misconfigured CPUs will run amok immediately when the L2 cache gets enabled. |
| * Workaraound is to setup the correct register setting prior enabling the |
| * L2 cache. This should not hurt already working CPUs, as they are using the |
| * same value. |
| */ |
| #define L2_MEM_VAL 0x10 |
| |
| clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096); |
| if (clkctl_base != NULL) { |
| writel(0x00000515, clkctl_base + L2_MEM_VAL); |
| iounmap(clkctl_base); |
| } else { |
| pr_err("L2 cache: Cannot fix timing. Trying to continue without\n"); |
| } |
| |
| l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096); |
| if (IS_ERR(l2x0_base)) { |
| printk(KERN_ERR "remapping L2 cache area failed with %ld\n", |
| PTR_ERR(l2x0_base)); |
| return; |
| } |
| |
| l2x0_init(l2x0_base, 0x00030024, 0x00000000); |
| #endif |
| } |
| |
| #ifdef CONFIG_SOC_IMX31 |
| static struct map_desc mx31_io_desc[] __initdata = { |
| imx_map_entry(MX31, X_MEMC, MT_DEVICE), |
| imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED), |
| imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED), |
| imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED), |
| imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED), |
| }; |
| |
| /* |
| * 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 mx31_map_io(void) |
| { |
| iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc)); |
| } |
| |
| void __init imx31_init_early(void) |
| { |
| mxc_set_cpu_type(MXC_CPU_MX31); |
| mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR)); |
| arch_ioremap_caller = imx3_ioremap_caller; |
| arm_pm_idle = imx3_idle; |
| mx3_ccm_base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR); |
| } |
| |
| void __init mx31_init_irq(void) |
| { |
| mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR)); |
| } |
| |
| static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = { |
| .per_2_per_addr = 1677, |
| }; |
| |
| static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = { |
| .ap_2_ap_addr = 423, |
| .ap_2_bp_addr = 829, |
| .bp_2_ap_addr = 1029, |
| }; |
| |
| static struct sdma_platform_data imx31_sdma_pdata __initdata = { |
| .fw_name = "sdma-imx31-to2.bin", |
| .script_addrs = &imx31_to2_sdma_script, |
| }; |
| |
| static const struct resource imx31_audmux_res[] __initconst = { |
| DEFINE_RES_MEM(MX31_AUDMUX_BASE_ADDR, SZ_16K), |
| }; |
| |
| void __init imx31_soc_init(void) |
| { |
| int to_version = mx31_revision() >> 4; |
| |
| imx3_init_l2x0(); |
| |
| mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0); |
| mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0); |
| mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0); |
| |
| pinctrl_provide_dummies(); |
| |
| if (to_version == 1) { |
| strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin", |
| strlen(imx31_sdma_pdata.fw_name)); |
| imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script; |
| } |
| |
| imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata); |
| |
| imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR)); |
| imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR)); |
| |
| platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res, |
| ARRAY_SIZE(imx31_audmux_res)); |
| } |
| #endif /* ifdef CONFIG_SOC_IMX31 */ |
| |
| #ifdef CONFIG_SOC_IMX35 |
| static struct map_desc mx35_io_desc[] __initdata = { |
| imx_map_entry(MX35, X_MEMC, MT_DEVICE), |
| imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED), |
| imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED), |
| imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED), |
| imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED), |
| }; |
| |
| void __init mx35_map_io(void) |
| { |
| iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc)); |
| } |
| |
| void __init imx35_init_early(void) |
| { |
| mxc_set_cpu_type(MXC_CPU_MX35); |
| mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR)); |
| mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR)); |
| arm_pm_idle = imx3_idle; |
| arch_ioremap_caller = imx3_ioremap_caller; |
| mx3_ccm_base = MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR); |
| } |
| |
| void __init mx35_init_irq(void) |
| { |
| mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR)); |
| } |
| |
| static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = { |
| .ap_2_ap_addr = 642, |
| .uart_2_mcu_addr = 817, |
| .mcu_2_app_addr = 747, |
| .uartsh_2_mcu_addr = 1183, |
| .per_2_shp_addr = 1033, |
| .mcu_2_shp_addr = 961, |
| .ata_2_mcu_addr = 1333, |
| .mcu_2_ata_addr = 1252, |
| .app_2_mcu_addr = 683, |
| .shp_2_per_addr = 1111, |
| .shp_2_mcu_addr = 892, |
| }; |
| |
| static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = { |
| .ap_2_ap_addr = 729, |
| .uart_2_mcu_addr = 904, |
| .per_2_app_addr = 1597, |
| .mcu_2_app_addr = 834, |
| .uartsh_2_mcu_addr = 1270, |
| .per_2_shp_addr = 1120, |
| .mcu_2_shp_addr = 1048, |
| .ata_2_mcu_addr = 1429, |
| .mcu_2_ata_addr = 1339, |
| .app_2_per_addr = 1531, |
| .app_2_mcu_addr = 770, |
| .shp_2_per_addr = 1198, |
| .shp_2_mcu_addr = 979, |
| }; |
| |
| static struct sdma_platform_data imx35_sdma_pdata __initdata = { |
| .fw_name = "sdma-imx35-to2.bin", |
| .script_addrs = &imx35_to2_sdma_script, |
| }; |
| |
| static const struct resource imx35_audmux_res[] __initconst = { |
| DEFINE_RES_MEM(MX35_AUDMUX_BASE_ADDR, SZ_16K), |
| }; |
| |
| void __init imx35_soc_init(void) |
| { |
| int to_version = mx35_revision() >> 4; |
| |
| imx3_init_l2x0(); |
| |
| /* i.mx35 has the i.mx31 type gpio */ |
| mxc_register_gpio("imx31-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0); |
| mxc_register_gpio("imx31-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0); |
| mxc_register_gpio("imx31-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0); |
| |
| pinctrl_provide_dummies(); |
| if (to_version == 1) { |
| strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin", |
| strlen(imx35_sdma_pdata.fw_name)); |
| imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script; |
| } |
| |
| imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata); |
| |
| /* Setup AIPS registers */ |
| imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR)); |
| imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR)); |
| |
| /* i.mx35 has the i.mx31 type audmux */ |
| platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res, |
| ARRAY_SIZE(imx35_audmux_res)); |
| } |
| #endif /* ifdef CONFIG_SOC_IMX35 */ |