Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Wind River SBC8560 setup and early boot code. |
| 3 | * |
| 4 | * Copyright 2007 Wind River Systems Inc. |
| 5 | * |
| 6 | * By Paul Gortmaker (see MAINTAINERS for contact information) |
| 7 | * |
| 8 | * Based largely on the MPC8560ADS support - Copyright 2005 Freescale Inc. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/stddef.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/pci.h> |
| 19 | #include <linux/kdev_t.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/seq_file.h> |
| 22 | #include <linux/of_platform.h> |
| 23 | |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 24 | #include <asm/time.h> |
| 25 | #include <asm/machdep.h> |
| 26 | #include <asm/pci-bridge.h> |
| 27 | #include <asm/mpic.h> |
| 28 | #include <mm/mmu_decl.h> |
| 29 | #include <asm/udbg.h> |
| 30 | |
| 31 | #include <sysdev/fsl_soc.h> |
| 32 | #include <sysdev/fsl_pci.h> |
| 33 | |
Dmitry Eremin-Solenikov | 543a07b | 2011-11-17 21:56:16 +0400 | [diff] [blame] | 34 | #include "mpc85xx.h" |
| 35 | |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 36 | #ifdef CONFIG_CPM2 |
| 37 | #include <asm/cpm2.h> |
| 38 | #include <sysdev/cpm2_pic.h> |
| 39 | #endif |
| 40 | |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 41 | static void __init sbc8560_pic_init(void) |
| 42 | { |
Kyle Moffett | e55d7f7 | 2011-12-22 10:19:14 +0000 | [diff] [blame] | 43 | struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN, |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 44 | 0, 256, " OpenPIC "); |
| 45 | BUG_ON(mpic == NULL); |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 46 | mpic_init(mpic); |
| 47 | |
Dmitry Eremin-Solenikov | 543a07b | 2011-11-17 21:56:16 +0400 | [diff] [blame] | 48 | mpc85xx_cpm2_pic_init(); |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | /* |
| 52 | * Setup the architecture |
| 53 | */ |
| 54 | #ifdef CONFIG_CPM2 |
| 55 | struct cpm_pin { |
| 56 | int port, pin, flags; |
| 57 | }; |
| 58 | |
| 59 | static const struct cpm_pin sbc8560_pins[] = { |
| 60 | /* SCC1 */ |
| 61 | {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 62 | {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 63 | {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 64 | |
| 65 | /* SCC2 */ |
| 66 | {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 67 | {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 68 | {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 69 | |
| 70 | /* FCC2 */ |
| 71 | {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 72 | {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 73 | {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 74 | {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 75 | {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 76 | {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 77 | {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 78 | {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 79 | {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 80 | {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 81 | {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 82 | {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, |
| 83 | {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 84 | {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 85 | {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */ |
| 86 | {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */ |
| 87 | |
| 88 | /* FCC3 */ |
| 89 | {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 90 | {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 91 | {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 92 | {1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 93 | {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 94 | {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 95 | {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 96 | {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 97 | {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 98 | {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 99 | {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 100 | {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, |
| 101 | {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 102 | {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
| 103 | {2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */ |
| 104 | {2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */ |
| 105 | }; |
| 106 | |
| 107 | static void __init init_ioports(void) |
| 108 | { |
| 109 | int i; |
| 110 | |
| 111 | for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) { |
Paul Gortmaker | 66576a8 | 2008-09-03 16:02:25 -0400 | [diff] [blame] | 112 | const struct cpm_pin *pin = &sbc8560_pins[i]; |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 113 | cpm2_set_pin(pin->port, pin->pin, pin->flags); |
| 114 | } |
| 115 | |
| 116 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); |
| 117 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); |
| 118 | cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); |
| 119 | cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); |
| 120 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX); |
| 121 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX); |
| 122 | cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX); |
| 123 | cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX); |
| 124 | } |
| 125 | #endif |
| 126 | |
| 127 | static void __init sbc8560_setup_arch(void) |
| 128 | { |
| 129 | #ifdef CONFIG_PCI |
| 130 | struct device_node *np; |
| 131 | #endif |
| 132 | |
| 133 | if (ppc_md.progress) |
| 134 | ppc_md.progress("sbc8560_setup_arch()", 0); |
| 135 | |
| 136 | #ifdef CONFIG_CPM2 |
| 137 | cpm2_reset(); |
| 138 | init_ioports(); |
| 139 | #endif |
| 140 | |
| 141 | #ifdef CONFIG_PCI |
| 142 | for_each_compatible_node(np, "pci", "fsl,mpc8540-pci") |
| 143 | fsl_add_bridge(np, 1); |
| 144 | #endif |
| 145 | } |
| 146 | |
| 147 | static void sbc8560_show_cpuinfo(struct seq_file *m) |
| 148 | { |
| 149 | uint pvid, svid, phid1; |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 150 | |
| 151 | pvid = mfspr(SPRN_PVR); |
| 152 | svid = mfspr(SPRN_SVR); |
| 153 | |
| 154 | seq_printf(m, "Vendor\t\t: Wind River\n"); |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 155 | seq_printf(m, "PVR\t\t: 0x%x\n", pvid); |
| 156 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); |
| 157 | |
| 158 | /* Display cpu Pll setting */ |
| 159 | phid1 = mfspr(SPRN_HID1); |
| 160 | seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 161 | } |
| 162 | |
Dmitry Eremin-Solenikov | 46d026a | 2011-11-17 21:56:17 +0400 | [diff] [blame] | 163 | machine_device_initcall(sbc8560, mpc85xx_common_publish_devices); |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 164 | |
| 165 | /* |
| 166 | * Called very early, device-tree isn't unflattened |
| 167 | */ |
| 168 | static int __init sbc8560_probe(void) |
| 169 | { |
| 170 | unsigned long root = of_get_flat_dt_root(); |
| 171 | |
| 172 | return of_flat_dt_is_compatible(root, "SBC8560"); |
| 173 | } |
| 174 | |
| 175 | #ifdef CONFIG_RTC_DRV_M48T59 |
| 176 | static int __init sbc8560_rtc_init(void) |
| 177 | { |
| 178 | struct device_node *np; |
| 179 | struct resource res; |
| 180 | struct platform_device *rtc_dev; |
| 181 | |
| 182 | np = of_find_compatible_node(NULL, NULL, "m48t59"); |
| 183 | if (np == NULL) { |
| 184 | printk("No RTC in DTB. Has it been eaten by wild dogs?\n"); |
| 185 | return -ENODEV; |
| 186 | } |
| 187 | |
| 188 | of_address_to_resource(np, 0, &res); |
| 189 | of_node_put(np); |
| 190 | |
| 191 | printk("Found RTC (m48t59) at i/o 0x%x\n", res.start); |
| 192 | |
| 193 | rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1); |
| 194 | |
| 195 | if (IS_ERR(rtc_dev)) { |
| 196 | printk("Registering sbc8560 RTC device failed\n"); |
| 197 | return PTR_ERR(rtc_dev); |
| 198 | } |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | arch_initcall(sbc8560_rtc_init); |
| 204 | |
| 205 | #endif /* M48T59 */ |
| 206 | |
Liang Li | 7792da8 | 2009-08-14 10:36:14 -0400 | [diff] [blame] | 207 | static __u8 __iomem *brstcr; |
| 208 | |
| 209 | static int __init sbc8560_bdrstcr_init(void) |
| 210 | { |
| 211 | struct device_node *np; |
| 212 | struct resource res; |
| 213 | |
| 214 | np = of_find_compatible_node(NULL, NULL, "wrs,sbc8560-brstcr"); |
| 215 | if (np == NULL) { |
| 216 | printk(KERN_WARNING "sbc8560: No board specific RSTCR in DTB.\n"); |
| 217 | return -ENODEV; |
| 218 | } |
| 219 | |
| 220 | of_address_to_resource(np, 0, &res); |
| 221 | |
Dmitry Eremin-Solenikov | c72fa7d | 2011-07-19 12:53:43 +0400 | [diff] [blame] | 222 | printk(KERN_INFO "sbc8560: Found BRSTCR at %pR\n", &res); |
Liang Li | 7792da8 | 2009-08-14 10:36:14 -0400 | [diff] [blame] | 223 | |
Joe Perches | 28f65c11 | 2011-06-09 09:13:32 -0700 | [diff] [blame] | 224 | brstcr = ioremap(res.start, resource_size(&res)); |
Liang Li | 7792da8 | 2009-08-14 10:36:14 -0400 | [diff] [blame] | 225 | if(!brstcr) |
| 226 | printk(KERN_WARNING "sbc8560: ioremap of brstcr failed.\n"); |
| 227 | |
| 228 | of_node_put(np); |
| 229 | |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | arch_initcall(sbc8560_bdrstcr_init); |
| 234 | |
| 235 | void sbc8560_rstcr_restart(char * cmd) |
| 236 | { |
| 237 | local_irq_disable(); |
| 238 | if(brstcr) |
| 239 | clrbits8(brstcr, 0x80); |
| 240 | |
| 241 | while(1); |
| 242 | } |
| 243 | |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 244 | define_machine(sbc8560) { |
| 245 | .name = "SBC8560", |
| 246 | .probe = sbc8560_probe, |
| 247 | .setup_arch = sbc8560_setup_arch, |
| 248 | .init_IRQ = sbc8560_pic_init, |
| 249 | .show_cpuinfo = sbc8560_show_cpuinfo, |
| 250 | .get_irq = mpic_get_irq, |
Liang Li | 7792da8 | 2009-08-14 10:36:14 -0400 | [diff] [blame] | 251 | .restart = sbc8560_rstcr_restart, |
Paul Gortmaker | 2c19806 | 2008-01-24 18:41:23 -0500 | [diff] [blame] | 252 | .calibrate_decr = generic_calibrate_decr, |
| 253 | .progress = udbg_progress, |
| 254 | }; |