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_data/sa11x0-serial.h>
10 #include <linux/platform_device.h>
11 #include <linux/irq.h>
12 #include <linux/io.h>
13 #include <linux/mtd/partitions.h>
14 #include <linux/smc91x.h>
15
16 #include <mach/hardware.h>
17 #include <asm/setup.h>
18 #include <asm/mach-types.h>
19
20 #include <asm/mach/arch.h>
21 #include <asm/mach/map.h>
22 #include <asm/mach/flash.h>
23 #include <mach/irqs.h>
24
25 #include "generic.h"
26
27
28 /*
29 * Ethernet IRQ mappings
30 */
31
32 #define PLEB_ETH0_P (0x20000300) /* Ethernet 0 in PCMCIA0 IO */
33 #define PLEB_ETH0_V (0xf6000300)
34
35 #define GPIO_ETH0_IRQ GPIO_GPIO(21)
36 #define GPIO_ETH0_EN GPIO_GPIO(26)
37
38 #define IRQ_GPIO_ETH0_IRQ IRQ_GPIO21
39
40 static struct resource smc91x_resources[] = {
41 [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
42 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
43 [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
44 #endif
45 };
46
47 static struct smc91x_platdata smc91x_platdata = {
48 .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
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 .dev = {
57 .platform_data = &smc91x_platdata,
58 },
59 };
60
61 static struct platform_device *devices[] __initdata = {
62 &smc91x_device,
63 };
64
65
66 /*
67 * Pleb's memory map
68 * has flash memory (typically 4 or 8 meg) selected by
69 * the two SA1100 lowest chip select outputs.
70 */
71 static struct resource pleb_flash_resources[] = {
72 [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
73 [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
74 };
75
76
77 static struct mtd_partition pleb_partitions[] = {
78 {
79 .name = "blob",
80 .offset = 0,
81 .size = 0x00020000,
82 }, {
83 .name = "kernel",
84 .offset = MTDPART_OFS_APPEND,
85 .size = 0x000e0000,
86 }, {
87 .name = "rootfs",
88 .offset = MTDPART_OFS_APPEND,
89 .size = 0x00300000,
90 }
91 };
92
93
94 static struct flash_platform_data pleb_flash_data = {
95 .map_name = "cfi_probe",
96 .parts = pleb_partitions,
97 .nr_parts = ARRAY_SIZE(pleb_partitions),
98 };
99
100
pleb_init(void)101 static void __init pleb_init(void)
102 {
103 sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
104 ARRAY_SIZE(pleb_flash_resources));
105
106
107 platform_add_devices(devices, ARRAY_SIZE(devices));
108 }
109
110
pleb_map_io(void)111 static void __init pleb_map_io(void)
112 {
113 sa1100_map_io();
114
115 sa1100_register_uart(0, 3);
116 sa1100_register_uart(1, 1);
117
118 GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
119 GPDR |= GPIO_UART_TXD;
120 GPDR &= ~GPIO_UART_RXD;
121 PPAR |= PPAR_UPR;
122
123 /*
124 * Fix expansion memory timing for network card
125 */
126 MECR = ((2<<10) | (2<<5) | (2<<0));
127
128 /*
129 * Enable the SMC ethernet controller
130 */
131 GPDR |= GPIO_ETH0_EN; /* set to output */
132 GPCR = GPIO_ETH0_EN; /* clear MCLK (enable smc) */
133
134 GPDR &= ~GPIO_ETH0_IRQ;
135
136 irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
137 }
138
139 MACHINE_START(PLEB, "PLEB")
140 .map_io = pleb_map_io,
141 .nr_irqs = SA1100_NR_IRQS,
142 .init_irq = sa1100_init_irq,
143 .init_time = sa1100_timer_init,
144 .init_machine = pleb_init,
145 .init_late = sa11x0_init_late,
146 .restart = sa11x0_restart,
147 MACHINE_END
148