1 /* 2 * arch/arm/mach-orion5x/ts78xx-setup.c 3 * 4 * Maintainer: Alexander Clouter <alex@digriz.org.uk> 5 * 6 * This file is licensed under the terms of the GNU General Public 7 * License version 2. This program is licensed "as is" without any 8 * warranty of any kind, whether express or implied. 9 */ 10 11 #include <linux/kernel.h> 12 #include <linux/init.h> 13 #include <linux/platform_device.h> 14 #include <linux/mtd/physmap.h> 15 #include <linux/mv643xx_eth.h> 16 #include <linux/ata_platform.h> 17 #include <linux/m48t86.h> 18 #include <asm/mach-types.h> 19 #include <asm/mach/arch.h> 20 #include <asm/mach/map.h> 21 #include <mach/orion5x.h> 22 #include "common.h" 23 #include "mpp.h" 24 25 /***************************************************************************** 26 * TS-78xx Info 27 ****************************************************************************/ 28 29 /* 30 * FPGA - lives where the PCI bus would be at ORION5X_PCI_MEM_PHYS_BASE 31 */ 32 #define TS78XX_FPGA_REGS_PHYS_BASE 0xe8000000 33 #define TS78XX_FPGA_REGS_VIRT_BASE 0xff900000 34 #define TS78XX_FPGA_REGS_SIZE SZ_1M 35 36 #define TS78XX_FPGA_REGS_SYSCON_ID (TS78XX_FPGA_REGS_VIRT_BASE | 0x000) 37 #define TS78XX_FPGA_REGS_SYSCON_LCDI (TS78XX_FPGA_REGS_VIRT_BASE | 0x004) 38 #define TS78XX_FPGA_REGS_SYSCON_LCDO (TS78XX_FPGA_REGS_VIRT_BASE | 0x008) 39 40 #define TS78XX_FPGA_REGS_RTC_CTRL (TS78XX_FPGA_REGS_VIRT_BASE | 0x808) 41 #define TS78XX_FPGA_REGS_RTC_DATA (TS78XX_FPGA_REGS_VIRT_BASE | 0x80c) 42 43 /* 44 * 512kB NOR flash Device 45 */ 46 #define TS78XX_NOR_BOOT_BASE 0xff800000 47 #define TS78XX_NOR_BOOT_SIZE SZ_512K 48 49 /***************************************************************************** 50 * I/O Address Mapping 51 ****************************************************************************/ 52 static struct map_desc ts78xx_io_desc[] __initdata = { 53 { 54 .virtual = TS78XX_FPGA_REGS_VIRT_BASE, 55 .pfn = __phys_to_pfn(TS78XX_FPGA_REGS_PHYS_BASE), 56 .length = TS78XX_FPGA_REGS_SIZE, 57 .type = MT_DEVICE, 58 }, 59 }; 60 61 void __init ts78xx_map_io(void) 62 { 63 orion5x_map_io(); 64 iotable_init(ts78xx_io_desc, ARRAY_SIZE(ts78xx_io_desc)); 65 } 66 67 /***************************************************************************** 68 * 512kB NOR Boot Flash - the chip is a M25P40 69 ****************************************************************************/ 70 static struct mtd_partition ts78xx_nor_boot_flash_resources[] = { 71 { 72 .name = "ts-bootrom", 73 .offset = 0, 74 /* only the first 256kB is used */ 75 .size = SZ_256K, 76 .mask_flags = MTD_WRITEABLE, 77 }, 78 }; 79 80 static struct physmap_flash_data ts78xx_nor_boot_flash_data = { 81 .width = 1, 82 .parts = ts78xx_nor_boot_flash_resources, 83 .nr_parts = ARRAY_SIZE(ts78xx_nor_boot_flash_resources), 84 }; 85 86 static struct resource ts78xx_nor_boot_flash_resource = { 87 .flags = IORESOURCE_MEM, 88 .start = TS78XX_NOR_BOOT_BASE, 89 .end = TS78XX_NOR_BOOT_BASE + TS78XX_NOR_BOOT_SIZE - 1, 90 }; 91 92 static struct platform_device ts78xx_nor_boot_flash = { 93 .name = "physmap-flash", 94 .id = -1, 95 .dev = { 96 .platform_data = &ts78xx_nor_boot_flash_data, 97 }, 98 .num_resources = 1, 99 .resource = &ts78xx_nor_boot_flash_resource, 100 }; 101 102 /***************************************************************************** 103 * Ethernet 104 ****************************************************************************/ 105 static struct mv643xx_eth_platform_data ts78xx_eth_data = { 106 .phy_addr = MV643XX_ETH_PHY_ADDR(0), 107 }; 108 109 /***************************************************************************** 110 * RTC M48T86 - nicked^Wborrowed from arch/arm/mach-ep93xx/ts72xx.c 111 ****************************************************************************/ 112 #ifdef CONFIG_RTC_DRV_M48T86 113 static unsigned char ts78xx_rtc_readbyte(unsigned long addr) 114 { 115 writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL); 116 return readb(TS78XX_FPGA_REGS_RTC_DATA); 117 } 118 119 static void ts78xx_rtc_writebyte(unsigned char value, unsigned long addr) 120 { 121 writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL); 122 writeb(value, TS78XX_FPGA_REGS_RTC_DATA); 123 } 124 125 static struct m48t86_ops ts78xx_rtc_ops = { 126 .readbyte = ts78xx_rtc_readbyte, 127 .writebyte = ts78xx_rtc_writebyte, 128 }; 129 130 static struct platform_device ts78xx_rtc_device = { 131 .name = "rtc-m48t86", 132 .id = -1, 133 .dev = { 134 .platform_data = &ts78xx_rtc_ops, 135 }, 136 .num_resources = 0, 137 }; 138 139 /* 140 * TS uses some of the user storage space on the RTC chip so see if it is 141 * present; as it's an optional feature at purchase time and not all boards 142 * will have it present 143 * 144 * I've used the method TS use in their rtc7800.c example for the detection 145 * 146 * TODO: track down a guinea pig without an RTC to see if we can work out a 147 * better RTC detection routine 148 */ 149 static int __init ts78xx_rtc_init(void) 150 { 151 unsigned char tmp_rtc0, tmp_rtc1; 152 153 tmp_rtc0 = ts78xx_rtc_readbyte(126); 154 tmp_rtc1 = ts78xx_rtc_readbyte(127); 155 156 ts78xx_rtc_writebyte(0x00, 126); 157 ts78xx_rtc_writebyte(0x55, 127); 158 if (ts78xx_rtc_readbyte(127) == 0x55) { 159 ts78xx_rtc_writebyte(0xaa, 127); 160 if (ts78xx_rtc_readbyte(127) == 0xaa 161 && ts78xx_rtc_readbyte(126) == 0x00) { 162 ts78xx_rtc_writebyte(tmp_rtc0, 126); 163 ts78xx_rtc_writebyte(tmp_rtc1, 127); 164 platform_device_register(&ts78xx_rtc_device); 165 return 1; 166 } 167 } 168 169 return 0; 170 }; 171 #else 172 static int __init ts78xx_rtc_init(void) 173 { 174 return 0; 175 } 176 #endif 177 178 /***************************************************************************** 179 * SATA 180 ****************************************************************************/ 181 static struct mv_sata_platform_data ts78xx_sata_data = { 182 .n_ports = 2, 183 }; 184 185 /***************************************************************************** 186 * print some information regarding the board 187 ****************************************************************************/ 188 static void __init ts78xx_print_board_id(void) 189 { 190 unsigned int board_info; 191 192 board_info = readl(TS78XX_FPGA_REGS_SYSCON_ID); 193 printk(KERN_INFO "TS-78xx Info: FPGA rev=%.2x, Board Magic=%.6x, ", 194 board_info & 0xff, 195 (board_info >> 8) & 0xffffff); 196 board_info = readl(TS78XX_FPGA_REGS_SYSCON_LCDI); 197 printk("JP1=%d, JP2=%d\n", 198 (board_info >> 30) & 0x1, 199 (board_info >> 31) & 0x1); 200 }; 201 202 /***************************************************************************** 203 * General Setup 204 ****************************************************************************/ 205 static struct orion5x_mpp_mode ts78xx_mpp_modes[] __initdata = { 206 { 0, MPP_UNUSED }, 207 { 1, MPP_GPIO }, /* JTAG Clock */ 208 { 2, MPP_GPIO }, /* JTAG Data In */ 209 { 3, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB2B */ 210 { 4, MPP_GPIO }, /* JTAG Data Out */ 211 { 5, MPP_GPIO }, /* JTAG TMS */ 212 { 6, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB31A_CLK4+ */ 213 { 7, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB22B */ 214 { 8, MPP_UNUSED }, 215 { 9, MPP_UNUSED }, 216 { 10, MPP_UNUSED }, 217 { 11, MPP_UNUSED }, 218 { 12, MPP_UNUSED }, 219 { 13, MPP_UNUSED }, 220 { 14, MPP_UNUSED }, 221 { 15, MPP_UNUSED }, 222 { 16, MPP_UART }, 223 { 17, MPP_UART }, 224 { 18, MPP_UART }, 225 { 19, MPP_UART }, 226 { -1 }, 227 }; 228 229 static void __init ts78xx_init(void) 230 { 231 /* 232 * Setup basic Orion functions. Need to be called early. 233 */ 234 orion5x_init(); 235 236 ts78xx_print_board_id(); 237 238 orion5x_mpp_conf(ts78xx_mpp_modes); 239 240 /* 241 * MPP[20] PCI Clock Out 1 242 * MPP[21] PCI Clock Out 0 243 * MPP[22] Unused 244 * MPP[23] Unused 245 * MPP[24] Unused 246 * MPP[25] Unused 247 */ 248 249 /* 250 * Configure peripherals. 251 */ 252 orion5x_ehci0_init(); 253 orion5x_ehci1_init(); 254 orion5x_eth_init(&ts78xx_eth_data); 255 orion5x_sata_init(&ts78xx_sata_data); 256 orion5x_uart0_init(); 257 orion5x_uart1_init(); 258 orion5x_xor_init(); 259 260 orion5x_setup_dev_boot_win(TS78XX_NOR_BOOT_BASE, 261 TS78XX_NOR_BOOT_SIZE); 262 platform_device_register(&ts78xx_nor_boot_flash); 263 264 if (!ts78xx_rtc_init()) 265 printk(KERN_INFO "TS-78xx RTC not detected or enabled\n"); 266 } 267 268 MACHINE_START(TS78XX, "Technologic Systems TS-78xx SBC") 269 /* Maintainer: Alexander Clouter <alex@digriz.org.uk> */ 270 .phys_io = ORION5X_REGS_PHYS_BASE, 271 .io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC, 272 .boot_params = 0x00000100, 273 .init_machine = ts78xx_init, 274 .map_io = ts78xx_map_io, 275 .init_irq = orion5x_init_irq, 276 .timer = &orion5x_timer, 277 MACHINE_END 278