1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * linux/arch/arm/mach-sa1100/pleb.c
4 */
5
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/tty.h>
9 #include <linux/ioport.h>
10 #include <linux/platform_data/sa11x0-serial.h>
11 #include <linux/platform_device.h>
12 #include <linux/irq.h>
13 #include <linux/io.h>
14 #include <linux/mtd/partitions.h>
15 #include <linux/smc91x.h>
16
17 #include <mach/hardware.h>
18 #include <asm/setup.h>
19 #include <asm/mach-types.h>
20
21 #include <asm/mach/arch.h>
22 #include <asm/mach/map.h>
23 #include <asm/mach/flash.h>
24 #include <mach/irqs.h>
25
26 #include "generic.h"
27
28
29 /*
30 * Ethernet IRQ mappings
31 */
32
33 #define PLEB_ETH0_P (0x20000300) /* Ethernet 0 in PCMCIA0 IO */
34 #define PLEB_ETH0_V (0xf6000300)
35
36 #define GPIO_ETH0_IRQ GPIO_GPIO(21)
37 #define GPIO_ETH0_EN GPIO_GPIO(26)
38
39 #define IRQ_GPIO_ETH0_IRQ IRQ_GPIO21
40
41 static struct resource smc91x_resources[] = {
42 [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
43 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
44 [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
45 #endif
46 };
47
48 static struct smc91x_platdata smc91x_platdata = {
49 .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
50 };
51
52 static struct platform_device smc91x_device = {
53 .name = "smc91x",
54 .id = 0,
55 .num_resources = ARRAY_SIZE(smc91x_resources),
56 .resource = smc91x_resources,
57 .dev = {
58 .platform_data = &smc91x_platdata,
59 },
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] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
74 [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
75 };
76
77
78 static struct mtd_partition pleb_partitions[] = {
79 {
80 .name = "blob",
81 .offset = 0,
82 .size = 0x00020000,
83 }, {
84 .name = "kernel",
85 .offset = MTDPART_OFS_APPEND,
86 .size = 0x000e0000,
87 }, {
88 .name = "rootfs",
89 .offset = MTDPART_OFS_APPEND,
90 .size = 0x00300000,
91 }
92 };
93
94
95 static struct flash_platform_data pleb_flash_data = {
96 .map_name = "cfi_probe",
97 .parts = pleb_partitions,
98 .nr_parts = ARRAY_SIZE(pleb_partitions),
99 };
100
101
pleb_init(void)102 static void __init pleb_init(void)
103 {
104 sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
105 ARRAY_SIZE(pleb_flash_resources));
106
107
108 platform_add_devices(devices, ARRAY_SIZE(devices));
109 }
110
111
pleb_map_io(void)112 static void __init pleb_map_io(void)
113 {
114 sa1100_map_io();
115
116 sa1100_register_uart(0, 3);
117 sa1100_register_uart(1, 1);
118
119 GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
120 GPDR |= GPIO_UART_TXD;
121 GPDR &= ~GPIO_UART_RXD;
122 PPAR |= PPAR_UPR;
123
124 /*
125 * Fix expansion memory timing for network card
126 */
127 MECR = ((2<<10) | (2<<5) | (2<<0));
128
129 /*
130 * Enable the SMC ethernet controller
131 */
132 GPDR |= GPIO_ETH0_EN; /* set to output */
133 GPCR = GPIO_ETH0_EN; /* clear MCLK (enable smc) */
134
135 GPDR &= ~GPIO_ETH0_IRQ;
136
137 irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
138 }
139
140 MACHINE_START(PLEB, "PLEB")
141 .map_io = pleb_map_io,
142 .nr_irqs = SA1100_NR_IRQS,
143 .init_irq = sa1100_init_irq,
144 .init_time = sa1100_timer_init,
145 .init_machine = pleb_init,
146 .init_late = sa11x0_init_late,
147 .restart = sa11x0_restart,
148 MACHINE_END
149