Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * arch/ppc/platforms/4xx/redwood6.c |
| 3 | * |
| 4 | * Author: Armin Kuster <akuster@mvista.com> |
| 5 | * |
| 6 | * 2002 (c) MontaVista, Software, Inc. This file is licensed under |
| 7 | * the terms of the GNU General Public License version 2. This program |
| 8 | * is licensed "as is" without any warranty of any kind, whether express |
| 9 | * or implied. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/config.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/pagemap.h> |
| 15 | #include <linux/device.h> |
| 16 | #include <linux/ioport.h> |
| 17 | #include <asm/io.h> |
| 18 | #include <asm/ppc4xx_pic.h> |
| 19 | #include <linux/delay.h> |
| 20 | #include <asm/machdep.h> |
| 21 | |
| 22 | /* |
| 23 | * Define external IRQ senses and polarities. |
| 24 | */ |
| 25 | unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = { |
| 26 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 7 */ |
| 27 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 8 */ |
| 28 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 9 */ |
| 29 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 0 */ |
| 30 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 1 */ |
| 31 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 2 */ |
| 32 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 3 */ |
| 33 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 4 */ |
| 34 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 5 */ |
| 35 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Ext Int 6 */ |
| 36 | }; |
| 37 | |
| 38 | static struct resource smc91x_resources[] = { |
| 39 | [0] = { |
| 40 | .start = SMC91111_BASE_ADDR, |
| 41 | .end = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1, |
| 42 | .flags = IORESOURCE_MEM, |
| 43 | }, |
| 44 | [1] = { |
| 45 | .start = SMC91111_IRQ, |
| 46 | .end = SMC91111_IRQ, |
| 47 | .flags = IORESOURCE_IRQ, |
| 48 | }, |
| 49 | }; |
| 50 | |
| 51 | static struct platform_device smc91x_device = { |
| 52 | .name = "smc91x", |
| 53 | .id = 0, |
| 54 | .num_resources = ARRAY_SIZE(smc91x_resources), |
| 55 | .resource = smc91x_resources, |
| 56 | }; |
| 57 | |
| 58 | static struct platform_device *redwood6_devs[] __initdata = { |
| 59 | &smc91x_device, |
| 60 | }; |
| 61 | |
| 62 | static int __init |
| 63 | redwood6_platform_add_devices(void) |
| 64 | { |
| 65 | return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs)); |
| 66 | } |
| 67 | |
| 68 | |
| 69 | void __init |
| 70 | redwood6_setup_arch(void) |
| 71 | { |
| 72 | #ifdef CONFIG_IDE |
| 73 | void *xilinx, *xilinx_1, *xilinx_2; |
| 74 | unsigned short us_reg5; |
| 75 | #endif |
| 76 | |
| 77 | ppc4xx_setup_arch(); |
| 78 | |
| 79 | #ifdef CONFIG_IDE |
| 80 | xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10); |
| 81 | /* init xilinx control registers - enable ide mux, clear reset bit */ |
| 82 | if (!xilinx) { |
| 83 | printk(KERN_CRIT |
| 84 | "redwood6_setup_arch() xilinxi ioremap failed\n"); |
| 85 | return; |
| 86 | } |
| 87 | xilinx_1 = xilinx + 0xa; |
| 88 | xilinx_2 = xilinx + 0xe; |
| 89 | |
| 90 | us_reg5 = readb(xilinx_1); |
| 91 | writeb(0x01d1, xilinx_1); |
| 92 | writeb(0x0008, xilinx_2); |
| 93 | |
| 94 | udelay(10 * 1000); |
| 95 | |
| 96 | writeb(0x01d1, xilinx_1); |
| 97 | writeb(0x0008, xilinx_2); |
| 98 | #endif |
| 99 | |
| 100 | #ifdef DEBUG_BRINGUP |
| 101 | bd_t *bip = (bd_t *) __res; |
| 102 | printk("\n"); |
| 103 | printk("machine\t: %s\n", PPC4xx_MACHINE_NAME); |
| 104 | printk("\n"); |
| 105 | printk("bi_s_version\t %s\n", bip->bi_s_version); |
| 106 | printk("bi_r_version\t %s\n", bip->bi_r_version); |
| 107 | printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize, |
| 108 | bip->bi_memsize / (1024 * 1000)); |
| 109 | printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0, |
| 110 | bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2], |
| 111 | bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]); |
| 112 | |
| 113 | printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n", |
| 114 | bip->bi_intfreq, bip->bi_intfreq / 1000000); |
| 115 | |
| 116 | printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n", |
| 117 | bip->bi_busfreq, bip->bi_busfreq / 1000000); |
| 118 | printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n", |
| 119 | bip->bi_tbfreq, bip->bi_tbfreq / 1000000); |
| 120 | |
| 121 | printk("\n"); |
| 122 | #endif |
| 123 | |
| 124 | /* Identify the system */ |
| 125 | printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n"); |
| 126 | printk(KERN_INFO |
| 127 | "Port by MontaVista Software, Inc. (source@mvista.com)\n"); |
| 128 | |
| 129 | device_initcall(redwood6_platform_add_devices); |
| 130 | } |
| 131 | |
| 132 | void __init |
| 133 | redwood6_map_io(void) |
| 134 | { |
| 135 | int i; |
| 136 | |
| 137 | ppc4xx_map_io(); |
| 138 | for (i = 0; i < 16; i++) { |
| 139 | unsigned long v, p; |
| 140 | |
| 141 | /* 0x400x0000 -> 0xe00x0000 */ |
| 142 | p = 0x40000000 | (i << 16); |
| 143 | v = STBx25xx_IO_BASE | (i << 16); |
| 144 | |
| 145 | io_block_mapping(v, p, PAGE_SIZE, |
| 146 | _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) | |
| 147 | _PAGE_GUARDED); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | void __init |
| 152 | platform_init(unsigned long r3, unsigned long r4, unsigned long r5, |
| 153 | unsigned long r6, unsigned long r7) |
| 154 | { |
| 155 | ppc4xx_init(r3, r4, r5, r6, r7); |
| 156 | |
| 157 | ppc_md.setup_arch = redwood6_setup_arch; |
| 158 | ppc_md.setup_io_mappings = redwood6_map_io; |
| 159 | } |