1 /*
2  * linux/arch/arm/mach-sa1100/pleb.c
3  */
4 
5 #include <linux/init.h>
6 #include <linux/kernel.h>
7 #include <linux/tty.h>
8 #include <linux/ioport.h>
9 #include <linux/platform_device.h>
10 #include <linux/irq.h>
11 #include <linux/io.h>
12 #include <linux/mtd/partitions.h>
13 
14 #include <mach/hardware.h>
15 #include <asm/setup.h>
16 #include <asm/mach-types.h>
17 
18 #include <asm/mach/arch.h>
19 #include <asm/mach/map.h>
20 #include <asm/mach/flash.h>
21 #include <asm/mach/serial_sa1100.h>
22 #include <mach/irqs.h>
23 
24 #include "generic.h"
25 
26 
27 /*
28  * Ethernet IRQ mappings
29  */
30 
31 #define PLEB_ETH0_P		(0x20000300)	/* Ethernet 0 in PCMCIA0 IO */
32 #define PLEB_ETH0_V		(0xf6000300)
33 
34 #define GPIO_ETH0_IRQ		GPIO_GPIO(21)
35 #define GPIO_ETH0_EN		GPIO_GPIO(26)
36 
37 #define IRQ_GPIO_ETH0_IRQ	IRQ_GPIO21
38 
39 static struct resource smc91x_resources[] = {
40 	[0] = {
41 		.start	= PLEB_ETH0_P,
42 		.end	= PLEB_ETH0_P | 0x03ffffff,
43 		.flags	= IORESOURCE_MEM,
44 	},
45 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
46 	[1] = {
47 		.start	= IRQ_GPIO_ETH0_IRQ,
48 		.end	= IRQ_GPIO_ETH0_IRQ,
49 		.flags	= IORESOURCE_IRQ,
50 	},
51 #endif
52 };
53 
54 
55 static struct platform_device smc91x_device = {
56 	.name		= "smc91x",
57 	.id		= 0,
58 	.num_resources	= ARRAY_SIZE(smc91x_resources),
59 	.resource	= smc91x_resources,
60 };
61 
62 static struct platform_device *devices[] __initdata = {
63 	&smc91x_device,
64 };
65 
66 
67 /*
68  * Pleb's memory map
69  * has flash memory (typically 4 or 8 meg) selected by
70  * the two SA1100 lowest chip select outputs.
71  */
72 static struct resource pleb_flash_resources[] = {
73 	[0] = {
74 		.start = SA1100_CS0_PHYS,
75 		.end   = SA1100_CS0_PHYS + SZ_8M - 1,
76 		.flags = IORESOURCE_MEM,
77 	},
78 	[1] = {
79 		.start = SA1100_CS1_PHYS,
80 		.end   = SA1100_CS1_PHYS + SZ_8M - 1,
81 		.flags = IORESOURCE_MEM,
82 	}
83 };
84 
85 
86 static struct mtd_partition pleb_partitions[] = {
87 	{
88 		.name		= "blob",
89 		.offset		= 0,
90 		.size		= 0x00020000,
91 	}, {
92 		.name		= "kernel",
93 		.offset		= MTDPART_OFS_APPEND,
94 		.size		= 0x000e0000,
95 	}, {
96 		.name		= "rootfs",
97 		.offset		= MTDPART_OFS_APPEND,
98 		.size		= 0x00300000,
99 	}
100 };
101 
102 
103 static struct flash_platform_data pleb_flash_data = {
104 	.map_name = "cfi_probe",
105 	.parts = pleb_partitions,
106 	.nr_parts = ARRAY_SIZE(pleb_partitions),
107 };
108 
109 
pleb_init(void)110 static void __init pleb_init(void)
111 {
112 	sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
113 			      ARRAY_SIZE(pleb_flash_resources));
114 
115 
116 	platform_add_devices(devices, ARRAY_SIZE(devices));
117 }
118 
119 
pleb_map_io(void)120 static void __init pleb_map_io(void)
121 {
122 	sa1100_map_io();
123 
124 	sa1100_register_uart(0, 3);
125 	sa1100_register_uart(1, 1);
126 
127 	GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
128 	GPDR |= GPIO_UART_TXD;
129 	GPDR &= ~GPIO_UART_RXD;
130 	PPAR |= PPAR_UPR;
131 
132 	/*
133 	 * Fix expansion memory timing for network card
134 	 */
135 	MECR = ((2<<10) | (2<<5) | (2<<0));
136 
137 	/*
138 	 * Enable the SMC ethernet controller
139 	 */
140 	GPDR |= GPIO_ETH0_EN;	/* set to output */
141 	GPCR  = GPIO_ETH0_EN;	/* clear MCLK (enable smc) */
142 
143 	GPDR &= ~GPIO_ETH0_IRQ;
144 
145 	irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
146 }
147 
148 MACHINE_START(PLEB, "PLEB")
149 	.map_io		= pleb_map_io,
150 	.init_irq	= sa1100_init_irq,
151 	.timer		= &sa1100_timer,
152 	.init_machine   = pleb_init,
153 	.restart	= sa11x0_restart,
154 MACHINE_END
155