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 <asm/arch/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 = 0, 107 .force_phy_addr = 1, 108 }; 109 110 /***************************************************************************** 111 * RTC M48T86 - nicked^Wborrowed from arch/arm/mach-ep93xx/ts72xx.c 112 ****************************************************************************/ 113 #ifdef CONFIG_RTC_DRV_M48T86 114 static unsigned char ts78xx_rtc_readbyte(unsigned long addr) 115 { 116 writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL); 117 return readb(TS78XX_FPGA_REGS_RTC_DATA); 118 } 119 120 static void ts78xx_rtc_writebyte(unsigned char value, unsigned long addr) 121 { 122 writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL); 123 writeb(value, TS78XX_FPGA_REGS_RTC_DATA); 124 } 125 126 static struct m48t86_ops ts78xx_rtc_ops = { 127 .readbyte = ts78xx_rtc_readbyte, 128 .writebyte = ts78xx_rtc_writebyte, 129 }; 130 131 static struct platform_device ts78xx_rtc_device = { 132 .name = "rtc-m48t86", 133 .id = -1, 134 .dev = { 135 .platform_data = &ts78xx_rtc_ops, 136 }, 137 .num_resources = 0, 138 }; 139 140 /* 141 * TS uses some of the user storage space on the RTC chip so see if it is 142 * present; as it's an optional feature at purchase time and not all boards 143 * will have it present 144 * 145 * I've used the method TS use in their rtc7800.c example for the detection 146 * 147 * TODO: track down a guinea pig without an RTC to see if we can work out a 148 * better RTC detection routine 149 */ 150 static int __init ts78xx_rtc_init(void) 151 { 152 unsigned char tmp_rtc0, tmp_rtc1; 153 154 tmp_rtc0 = ts78xx_rtc_readbyte(126); 155 tmp_rtc1 = ts78xx_rtc_readbyte(127); 156 157 ts78xx_rtc_writebyte(0x00, 126); 158 ts78xx_rtc_writebyte(0x55, 127); 159 if (ts78xx_rtc_readbyte(127) == 0x55) { 160 ts78xx_rtc_writebyte(0xaa, 127); 161 if (ts78xx_rtc_readbyte(127) == 0xaa 162 && ts78xx_rtc_readbyte(126) == 0x00) { 163 ts78xx_rtc_writebyte(tmp_rtc0, 126); 164 ts78xx_rtc_writebyte(tmp_rtc1, 127); 165 platform_device_register(&ts78xx_rtc_device); 166 return 1; 167 } 168 } 169 170 return 0; 171 }; 172 #else 173 static int __init ts78xx_rtc_init(void) 174 { 175 return 0; 176 } 177 #endif 178 179 /***************************************************************************** 180 * SATA 181 ****************************************************************************/ 182 static struct mv_sata_platform_data ts78xx_sata_data = { 183 .n_ports = 2, 184 }; 185 186 /***************************************************************************** 187 * print some information regarding the board 188 ****************************************************************************/ 189 static void __init ts78xx_print_board_id(void) 190 { 191 unsigned int board_info; 192 193 board_info = readl(TS78XX_FPGA_REGS_SYSCON_ID); 194 printk(KERN_INFO "TS-78xx Info: FPGA rev=%.2x, Board Magic=%.6x, ", 195 board_info & 0xff, 196 (board_info >> 8) & 0xffffff); 197 board_info = readl(TS78XX_FPGA_REGS_SYSCON_LCDI); 198 printk("JP1=%d, JP2=%d\n", 199 (board_info >> 30) & 0x1, 200 (board_info >> 31) & 0x1); 201 }; 202 203 /***************************************************************************** 204 * General Setup 205 ****************************************************************************/ 206 static struct orion5x_mpp_mode ts78xx_mpp_modes[] __initdata = { 207 { 0, MPP_UNUSED }, 208 { 1, MPP_GPIO }, /* JTAG Clock */ 209 { 2, MPP_GPIO }, /* JTAG Data In */ 210 { 3, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB2B */ 211 { 4, MPP_GPIO }, /* JTAG Data Out */ 212 { 5, MPP_GPIO }, /* JTAG TMS */ 213 { 6, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB31A_CLK4+ */ 214 { 7, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB22B */ 215 { 8, MPP_UNUSED }, 216 { 9, MPP_UNUSED }, 217 { 10, MPP_UNUSED }, 218 { 11, MPP_UNUSED }, 219 { 12, MPP_UNUSED }, 220 { 13, MPP_UNUSED }, 221 { 14, MPP_UNUSED }, 222 { 15, MPP_UNUSED }, 223 { 16, MPP_UART }, 224 { 17, MPP_UART }, 225 { 18, MPP_UART }, 226 { 19, MPP_UART }, 227 { -1 }, 228 }; 229 230 static void __init ts78xx_init(void) 231 { 232 /* 233 * Setup basic Orion functions. Need to be called early. 234 */ 235 orion5x_init(); 236 237 ts78xx_print_board_id(); 238 239 orion5x_mpp_conf(ts78xx_mpp_modes); 240 241 /* 242 * MPP[20] PCI Clock Out 1 243 * MPP[21] PCI Clock Out 0 244 * MPP[22] Unused 245 * MPP[23] Unused 246 * MPP[24] Unused 247 * MPP[25] Unused 248 */ 249 250 /* 251 * Configure peripherals. 252 */ 253 orion5x_ehci0_init(); 254 orion5x_ehci1_init(); 255 orion5x_eth_init(&ts78xx_eth_data); 256 orion5x_sata_init(&ts78xx_sata_data); 257 orion5x_uart0_init(); 258 orion5x_uart1_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