2 * Copyright (C) 1999,2000 Arm Limited
3 * Copyright (C) 2000 Deep Blue Solutions Ltd
4 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
5 * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
6 * - add MX31 specific definitions
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
20 #include <linux/init.h>
21 #include <linux/err.h>
23 #include <linux/pinctrl/machine.h>
25 #include <asm/pgtable.h>
26 #include <asm/system_misc.h>
27 #include <asm/hardware/cache-l2x0.h>
28 #include <asm/mach/map.h>
31 #include "crmregs-imx3.h"
32 #include "devices/devices-common.h"
36 void __iomem *mx3_ccm_base;
38 static void imx3_idle(void)
40 unsigned long reg = 0;
43 /* disable I and D cache */
44 "mrc p15, 0, %0, c1, c0, 0\n"
45 "bic %0, %0, #0x00001000\n"
46 "bic %0, %0, #0x00000004\n"
47 "mcr p15, 0, %0, c1, c0, 0\n"
48 /* invalidate I cache */
50 "mcr p15, 0, %0, c7, c5, 0\n"
51 /* clear and invalidate D cache */
53 "mcr p15, 0, %0, c7, c14, 0\n"
56 "mcr p15, 0, %0, c7, c0, 4\n"
57 "nop\n" "nop\n" "nop\n" "nop\n"
58 "nop\n" "nop\n" "nop\n"
59 /* enable I and D cache */
60 "mrc p15, 0, %0, c1, c0, 0\n"
61 "orr %0, %0, #0x00001000\n"
62 "orr %0, %0, #0x00000004\n"
63 "mcr p15, 0, %0, c1, c0, 0\n"
67 static void __iomem *imx3_ioremap_caller(phys_addr_t phys_addr, size_t size,
68 unsigned int mtype, void *caller)
70 if (mtype == MT_DEVICE) {
72 * Access all peripherals below 0x80000000 as nonshared device
73 * on mx3, but leave l2cc alone. Otherwise cache corruptions
76 if (phys_addr < 0x80000000 &&
77 !addr_in_module(phys_addr, MX3x_L2CC))
78 mtype = MT_DEVICE_NONSHARED;
81 return __arm_ioremap_caller(phys_addr, size, mtype, caller);
84 static void __init imx3_init_l2x0(void)
86 #ifdef CONFIG_CACHE_L2X0
87 void __iomem *l2x0_base;
88 void __iomem *clkctl_base;
91 * First of all, we must repair broken chip settings. There are some
92 * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
93 * misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
94 * Workaraound is to setup the correct register setting prior enabling the
95 * L2 cache. This should not hurt already working CPUs, as they are using the
98 #define L2_MEM_VAL 0x10
100 clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
101 if (clkctl_base != NULL) {
102 writel(0x00000515, clkctl_base + L2_MEM_VAL);
103 iounmap(clkctl_base);
105 pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
108 l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
110 printk(KERN_ERR "remapping L2 cache area failed\n");
114 l2x0_init(l2x0_base, 0x00030024, 0x00000000);
118 #ifdef CONFIG_SOC_IMX31
119 static struct map_desc mx31_io_desc[] __initdata = {
120 imx_map_entry(MX31, X_MEMC, MT_DEVICE),
121 imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
122 imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
123 imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
124 imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
128 * This function initializes the memory map. It is called during the
129 * system startup to create static physical to virtual memory mappings
130 * for the IO modules.
132 void __init mx31_map_io(void)
134 iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
137 static void imx31_idle(void)
139 int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
140 reg &= ~MXC_CCM_CCMR_LPM_MASK;
141 imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
146 void __init imx31_init_early(void)
148 mxc_set_cpu_type(MXC_CPU_MX31);
149 arch_ioremap_caller = imx3_ioremap_caller;
150 arm_pm_idle = imx31_idle;
151 mx3_ccm_base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR);
154 void __init mx31_init_irq(void)
156 mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
159 static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
160 .per_2_per_addr = 1677,
163 static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
166 .bp_2_ap_addr = 1029,
169 static struct sdma_platform_data imx31_sdma_pdata __initdata = {
170 .fw_name = "/*(DEBLOBBED)*/",
171 .script_addrs = &imx31_to2_sdma_script,
174 static const struct resource imx31_audmux_res[] __initconst = {
175 DEFINE_RES_MEM(MX31_AUDMUX_BASE_ADDR, SZ_16K),
178 static const struct resource imx31_rnga_res[] __initconst = {
179 DEFINE_RES_MEM(MX31_RNGA_BASE_ADDR, SZ_16K),
182 void __init imx31_soc_init(void)
184 int to_version = mx31_revision() >> 4;
188 mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
191 mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
192 mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
193 mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
195 pinctrl_provide_dummies();
197 if (to_version == 1) {
198 strncpy(imx31_sdma_pdata.fw_name, "/*(DEBLOBBED)*/",
199 strlen(imx31_sdma_pdata.fw_name));
200 imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
203 imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
205 imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR));
206 imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR));
208 platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res,
209 ARRAY_SIZE(imx31_audmux_res));
210 platform_device_register_simple("mxc_rnga", -1, imx31_rnga_res,
211 ARRAY_SIZE(imx31_rnga_res));
213 #endif /* ifdef CONFIG_SOC_IMX31 */
215 #ifdef CONFIG_SOC_IMX35
216 static struct map_desc mx35_io_desc[] __initdata = {
217 imx_map_entry(MX35, X_MEMC, MT_DEVICE),
218 imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
219 imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
220 imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
221 imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
224 void __init mx35_map_io(void)
226 iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
229 static void imx35_idle(void)
231 int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
232 reg &= ~MXC_CCM_CCMR_LPM_MASK;
233 reg |= MXC_CCM_CCMR_LPM_WAIT_MX35;
234 imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
239 void __init imx35_init_early(void)
241 mxc_set_cpu_type(MXC_CPU_MX35);
242 mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
243 arm_pm_idle = imx35_idle;
244 arch_ioremap_caller = imx3_ioremap_caller;
245 mx3_ccm_base = MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR);
248 void __init mx35_init_irq(void)
250 mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
253 static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
255 .uart_2_mcu_addr = 817,
256 .mcu_2_app_addr = 747,
257 .uartsh_2_mcu_addr = 1183,
258 .per_2_shp_addr = 1033,
259 .mcu_2_shp_addr = 961,
260 .ata_2_mcu_addr = 1333,
261 .mcu_2_ata_addr = 1252,
262 .app_2_mcu_addr = 683,
263 .shp_2_per_addr = 1111,
264 .shp_2_mcu_addr = 892,
267 static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
269 .uart_2_mcu_addr = 904,
270 .per_2_app_addr = 1597,
271 .mcu_2_app_addr = 834,
272 .uartsh_2_mcu_addr = 1270,
273 .per_2_shp_addr = 1120,
274 .mcu_2_shp_addr = 1048,
275 .ata_2_mcu_addr = 1429,
276 .mcu_2_ata_addr = 1339,
277 .app_2_per_addr = 1531,
278 .app_2_mcu_addr = 770,
279 .shp_2_per_addr = 1198,
280 .shp_2_mcu_addr = 979,
283 static struct sdma_platform_data imx35_sdma_pdata __initdata = {
284 .fw_name = "/*(DEBLOBBED)*/",
285 .script_addrs = &imx35_to2_sdma_script,
288 static const struct resource imx35_audmux_res[] __initconst = {
289 DEFINE_RES_MEM(MX35_AUDMUX_BASE_ADDR, SZ_16K),
292 void __init imx35_soc_init(void)
294 int to_version = mx35_revision() >> 4;
298 mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
301 mxc_register_gpio("imx35-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
302 mxc_register_gpio("imx35-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
303 mxc_register_gpio("imx35-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
305 pinctrl_provide_dummies();
306 if (to_version == 1) {
307 strncpy(imx35_sdma_pdata.fw_name, "/*(DEBLOBBED)*/",
308 strlen(imx35_sdma_pdata.fw_name));
309 imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
312 imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
314 /* Setup AIPS registers */
315 imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR));
316 imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR));
318 /* i.mx35 has the i.mx31 type audmux */
319 platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res,
320 ARRAY_SIZE(imx35_audmux_res));
322 #endif /* ifdef CONFIG_SOC_IMX35 */