1 /* 2 * arch/arm/mach-orion5x/common.c 3 * 4 * Core functions for Marvell Orion 5x SoCs 5 * 6 * Maintainer: Tzachi Perelstein <tzachi@marvell.com> 7 * 8 * This file is licensed under the terms of the GNU General Public 9 * License version 2. This program is licensed "as is" without any 10 * warranty of any kind, whether express or implied. 11 */ 12 13 #include <linux/kernel.h> 14 #include <linux/init.h> 15 #include <linux/platform_device.h> 16 #include <linux/dma-mapping.h> 17 #include <linux/serial_8250.h> 18 #include <linux/mv643xx_i2c.h> 19 #include <linux/ata_platform.h> 20 #include <linux/delay.h> 21 #include <linux/clk-provider.h> 22 #include <linux/cpu.h> 23 #include <net/dsa.h> 24 #include <asm/page.h> 25 #include <asm/setup.h> 26 #include <asm/system_misc.h> 27 #include <asm/mach/arch.h> 28 #include <asm/mach/map.h> 29 #include <asm/mach/time.h> 30 #include <linux/platform_data/mtd-orion_nand.h> 31 #include <linux/platform_data/usb-ehci-orion.h> 32 #include <plat/time.h> 33 #include <plat/common.h> 34 35 #include "bridge-regs.h" 36 #include "common.h" 37 #include "orion5x.h" 38 39 /***************************************************************************** 40 * I/O Address Mapping 41 ****************************************************************************/ 42 static struct map_desc orion5x_io_desc[] __initdata = { 43 { 44 .virtual = (unsigned long) ORION5X_REGS_VIRT_BASE, 45 .pfn = __phys_to_pfn(ORION5X_REGS_PHYS_BASE), 46 .length = ORION5X_REGS_SIZE, 47 .type = MT_DEVICE, 48 }, { 49 .virtual = (unsigned long) ORION5X_PCIE_WA_VIRT_BASE, 50 .pfn = __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE), 51 .length = ORION5X_PCIE_WA_SIZE, 52 .type = MT_DEVICE, 53 }, 54 }; 55 56 void __init orion5x_map_io(void) 57 { 58 iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc)); 59 } 60 61 62 /***************************************************************************** 63 * CLK tree 64 ****************************************************************************/ 65 static struct clk *tclk; 66 67 void __init clk_init(void) 68 { 69 tclk = clk_register_fixed_rate(NULL, "tclk", NULL, 0, orion5x_tclk); 70 71 orion_clkdev_init(tclk); 72 } 73 74 /***************************************************************************** 75 * EHCI0 76 ****************************************************************************/ 77 void __init orion5x_ehci0_init(void) 78 { 79 orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL, 80 EHCI_PHY_ORION); 81 } 82 83 84 /***************************************************************************** 85 * EHCI1 86 ****************************************************************************/ 87 void __init orion5x_ehci1_init(void) 88 { 89 orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL); 90 } 91 92 93 /***************************************************************************** 94 * GE00 95 ****************************************************************************/ 96 void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data) 97 { 98 orion_ge00_init(eth_data, 99 ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM, 100 IRQ_ORION5X_ETH_ERR, 101 MV643XX_TX_CSUM_DEFAULT_LIMIT); 102 } 103 104 105 /***************************************************************************** 106 * Ethernet switch 107 ****************************************************************************/ 108 void __init orion5x_eth_switch_init(struct dsa_platform_data *d) 109 { 110 orion_ge00_switch_init(d); 111 } 112 113 114 /***************************************************************************** 115 * I2C 116 ****************************************************************************/ 117 void __init orion5x_i2c_init(void) 118 { 119 orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8); 120 121 } 122 123 124 /***************************************************************************** 125 * SATA 126 ****************************************************************************/ 127 void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data) 128 { 129 orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA); 130 } 131 132 133 /***************************************************************************** 134 * SPI 135 ****************************************************************************/ 136 void __init orion5x_spi_init(void) 137 { 138 orion_spi_init(SPI_PHYS_BASE); 139 } 140 141 142 /***************************************************************************** 143 * UART0 144 ****************************************************************************/ 145 void __init orion5x_uart0_init(void) 146 { 147 orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE, 148 IRQ_ORION5X_UART0, tclk); 149 } 150 151 /***************************************************************************** 152 * UART1 153 ****************************************************************************/ 154 void __init orion5x_uart1_init(void) 155 { 156 orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE, 157 IRQ_ORION5X_UART1, tclk); 158 } 159 160 /***************************************************************************** 161 * XOR engine 162 ****************************************************************************/ 163 void __init orion5x_xor_init(void) 164 { 165 orion_xor0_init(ORION5X_XOR_PHYS_BASE, 166 ORION5X_XOR_PHYS_BASE + 0x200, 167 IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1); 168 } 169 170 /***************************************************************************** 171 * Cryptographic Engines and Security Accelerator (CESA) 172 ****************************************************************************/ 173 static void __init orion5x_crypto_init(void) 174 { 175 mvebu_mbus_add_window_by_id(ORION_MBUS_SRAM_TARGET, 176 ORION_MBUS_SRAM_ATTR, 177 ORION5X_SRAM_PHYS_BASE, 178 ORION5X_SRAM_SIZE); 179 orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE, 180 SZ_8K, IRQ_ORION5X_CESA); 181 } 182 183 /***************************************************************************** 184 * Watchdog 185 ****************************************************************************/ 186 static struct resource orion_wdt_resource[] = { 187 DEFINE_RES_MEM(TIMER_PHYS_BASE, 0x04), 188 DEFINE_RES_MEM(RSTOUTn_MASK_PHYS, 0x04), 189 }; 190 191 static struct platform_device orion_wdt_device = { 192 .name = "orion_wdt", 193 .id = -1, 194 .num_resources = ARRAY_SIZE(orion_wdt_resource), 195 .resource = orion_wdt_resource, 196 }; 197 198 static void __init orion5x_wdt_init(void) 199 { 200 platform_device_register(&orion_wdt_device); 201 } 202 203 204 /***************************************************************************** 205 * Time handling 206 ****************************************************************************/ 207 void __init orion5x_init_early(void) 208 { 209 u32 rev, dev; 210 const char *mbus_soc_name; 211 212 orion_time_set_base(TIMER_VIRT_BASE); 213 214 /* Initialize the MBUS driver */ 215 orion5x_pcie_id(&dev, &rev); 216 if (dev == MV88F5281_DEV_ID) 217 mbus_soc_name = "marvell,orion5x-88f5281-mbus"; 218 else if (dev == MV88F5182_DEV_ID) 219 mbus_soc_name = "marvell,orion5x-88f5182-mbus"; 220 else if (dev == MV88F5181_DEV_ID) 221 mbus_soc_name = "marvell,orion5x-88f5181-mbus"; 222 else if (dev == MV88F6183_DEV_ID) 223 mbus_soc_name = "marvell,orion5x-88f6183-mbus"; 224 else 225 mbus_soc_name = NULL; 226 mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE, 227 ORION5X_BRIDGE_WINS_SZ, 228 ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ); 229 } 230 231 void orion5x_setup_wins(void) 232 { 233 /* 234 * The PCIe windows will no longer be statically allocated 235 * here once Orion5x is migrated to the pci-mvebu driver. 236 */ 237 mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCIE_IO_TARGET, 238 ORION_MBUS_PCIE_IO_ATTR, 239 ORION5X_PCIE_IO_PHYS_BASE, 240 ORION5X_PCIE_IO_SIZE, 241 ORION5X_PCIE_IO_BUS_BASE); 242 mvebu_mbus_add_window_by_id(ORION_MBUS_PCIE_MEM_TARGET, 243 ORION_MBUS_PCIE_MEM_ATTR, 244 ORION5X_PCIE_MEM_PHYS_BASE, 245 ORION5X_PCIE_MEM_SIZE); 246 mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCI_IO_TARGET, 247 ORION_MBUS_PCI_IO_ATTR, 248 ORION5X_PCI_IO_PHYS_BASE, 249 ORION5X_PCI_IO_SIZE, 250 ORION5X_PCI_IO_BUS_BASE); 251 mvebu_mbus_add_window_by_id(ORION_MBUS_PCI_MEM_TARGET, 252 ORION_MBUS_PCI_MEM_ATTR, 253 ORION5X_PCI_MEM_PHYS_BASE, 254 ORION5X_PCI_MEM_SIZE); 255 } 256 257 int orion5x_tclk; 258 259 static int __init orion5x_find_tclk(void) 260 { 261 u32 dev, rev; 262 263 orion5x_pcie_id(&dev, &rev); 264 if (dev == MV88F6183_DEV_ID && 265 (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0) 266 return 133333333; 267 268 return 166666667; 269 } 270 271 void __init orion5x_timer_init(void) 272 { 273 orion5x_tclk = orion5x_find_tclk(); 274 275 orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR, 276 IRQ_ORION5X_BRIDGE, orion5x_tclk); 277 } 278 279 280 /***************************************************************************** 281 * General 282 ****************************************************************************/ 283 /* 284 * Identify device ID and rev from PCIe configuration header space '0'. 285 */ 286 void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name) 287 { 288 orion5x_pcie_id(dev, rev); 289 290 if (*dev == MV88F5281_DEV_ID) { 291 if (*rev == MV88F5281_REV_D2) { 292 *dev_name = "MV88F5281-D2"; 293 } else if (*rev == MV88F5281_REV_D1) { 294 *dev_name = "MV88F5281-D1"; 295 } else if (*rev == MV88F5281_REV_D0) { 296 *dev_name = "MV88F5281-D0"; 297 } else { 298 *dev_name = "MV88F5281-Rev-Unsupported"; 299 } 300 } else if (*dev == MV88F5182_DEV_ID) { 301 if (*rev == MV88F5182_REV_A2) { 302 *dev_name = "MV88F5182-A2"; 303 } else { 304 *dev_name = "MV88F5182-Rev-Unsupported"; 305 } 306 } else if (*dev == MV88F5181_DEV_ID) { 307 if (*rev == MV88F5181_REV_B1) { 308 *dev_name = "MV88F5181-Rev-B1"; 309 } else if (*rev == MV88F5181L_REV_A1) { 310 *dev_name = "MV88F5181L-Rev-A1"; 311 } else { 312 *dev_name = "MV88F5181(L)-Rev-Unsupported"; 313 } 314 } else if (*dev == MV88F6183_DEV_ID) { 315 if (*rev == MV88F6183_REV_B0) { 316 *dev_name = "MV88F6183-Rev-B0"; 317 } else { 318 *dev_name = "MV88F6183-Rev-Unsupported"; 319 } 320 } else { 321 *dev_name = "Device-Unknown"; 322 } 323 } 324 325 void __init orion5x_init(void) 326 { 327 char *dev_name; 328 u32 dev, rev; 329 330 orion5x_id(&dev, &rev, &dev_name); 331 printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk); 332 333 /* 334 * Setup Orion address map 335 */ 336 orion5x_setup_wins(); 337 338 /* Setup root of clk tree */ 339 clk_init(); 340 341 /* 342 * Don't issue "Wait for Interrupt" instruction if we are 343 * running on D0 5281 silicon. 344 */ 345 if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) { 346 printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n"); 347 cpu_idle_poll_ctrl(true); 348 } 349 350 /* 351 * The 5082/5181l/5182/6082/6082l/6183 have crypto 352 * while 5180n/5181/5281 don't have crypto. 353 */ 354 if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) || 355 dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID) 356 orion5x_crypto_init(); 357 358 /* 359 * Register watchdog driver 360 */ 361 orion5x_wdt_init(); 362 } 363 364 void orion5x_restart(enum reboot_mode mode, const char *cmd) 365 { 366 /* 367 * Enable and issue soft reset 368 */ 369 orion5x_setbits(RSTOUTn_MASK, (1 << 2)); 370 orion5x_setbits(CPU_SOFT_RESET, 1); 371 mdelay(200); 372 orion5x_clrbits(CPU_SOFT_RESET, 1); 373 } 374 375 /* 376 * Many orion-based systems have buggy bootloader implementations. 377 * This is a common fixup for bogus memory tags. 378 */ 379 void __init tag_fixup_mem32(struct tag *t, char **from) 380 { 381 for (; t->hdr.size; t = tag_next(t)) 382 if (t->hdr.tag == ATAG_MEM && 383 (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK || 384 t->u.mem.start & ~PAGE_MASK)) { 385 printk(KERN_WARNING 386 "Clearing invalid memory bank %dKB@0x%08x\n", 387 t->u.mem.size / 1024, t->u.mem.start); 388 t->hdr.tag = 0; 389 } 390 } 391