1 /*
2 * linux/arch/arm/mach-sa1100/pfs168.c
3 */
4 #include <linux/config.h>
5 #include <linux/init.h>
6 #include <linux/kernel.h>
7 #include <linux/tty.h>
8 #include <linux/errno.h>
9
10 #include <asm/hardware.h>
11 #include <asm/setup.h>
12
13 #include <asm/mach/arch.h>
14 #include <asm/mach/map.h>
15 #include <asm/mach/serial_sa1100.h>
16
17 #include "generic.h"
18 #include "sa1111.h"
19
20
pfs168_init(void)21 static int __init pfs168_init(void)
22 {
23 int ret;
24
25 if (!machine_is_pfs168())
26 return -ENODEV;
27
28 /*
29 * Ensure that the memory bus request/grant signals are setup,
30 * and the grant is held in its inactive state
31 */
32 sa1110_mb_disable();
33
34 /*
35 * Probe for SA1111.
36 */
37 ret = sa1111_probe(PFS168_SA1111_BASE);
38 if (ret < 0)
39 return ret;
40
41 /*
42 * We found it. Wake the chip up.
43 */
44 sa1111_wake();
45
46 /*
47 * The SDRAM configuration of the SA1110 and the SA1111 must
48 * match. This is very important to ensure that SA1111 accesses
49 * don't corrupt the SDRAM. Note that this ungates the SA1111's
50 * MBGNT signal, so we must have called sa1110_mb_disable()
51 * beforehand.
52 */
53 sa1111_configure_smc(1,
54 FExtr(MDCNFG, MDCNFG_SA1110_DRAC0),
55 FExtr(MDCNFG, MDCNFG_SA1110_TDL0));
56
57 /*
58 * We only need to turn on DCLK whenever we want to use the
59 * DMA. It can otherwise be held firmly in the off position.
60 */
61 SKPCR |= SKPCR_DCLKEN;
62
63 /*
64 * Enable the SA1110 memory bus request and grant signals.
65 */
66 sa1110_mb_enable();
67
68 sa1111_init_irq(IRQ_GPIO25); /* SA1111 IRQ on GPIO 25 */
69
70 return 0;
71 }
72
73 __initcall(pfs168_init);
74
75
pfs168_init_irq(void)76 static void __init pfs168_init_irq(void)
77 {
78 sa1100_init_irq();
79
80 /*
81 * Need to register these as rising edge interrupts
82 * for standard 16550 serial driver support.
83 */
84 set_GPIO_IRQ_edge(GPIO_GPIO(19), GPIO_RISING_EDGE);
85 set_GPIO_IRQ_edge(GPIO_GPIO(20), GPIO_RISING_EDGE);
86 set_GPIO_IRQ_edge(GPIO_GPIO(25), GPIO_RISING_EDGE);
87 set_GPIO_IRQ_edge(GPIO_UCB1300_IRQ, GPIO_RISING_EDGE);
88 }
89
90
91 static void __init
fixup_pfs168(struct machine_desc * desc,struct param_struct * params,char ** cmdline,struct meminfo * mi)92 fixup_pfs168(struct machine_desc *desc, struct param_struct *params,
93 char **cmdline, struct meminfo *mi)
94 {
95 SET_BANK( 0, 0xc0000000, 16*1024*1024 );
96 mi->nr_banks = 1;
97
98 ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
99 setup_ramdisk( 1, 0, 0, 8192 );
100 setup_initrd( 0xc0800000, 3*1024*1024 );
101 }
102
103 static struct map_desc pfs168_io_desc[] __initdata = {
104 /* virtual physical length domain r w c b */
105 { 0xe8000000, 0x00000000, 0x02000000, DOMAIN_IO, 0, 1, 0, 0 }, /* Flash bank 0 */
106 { 0xf0000000, 0x10000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* 16C752 DUART port A (COM5) */
107 { 0xf0001000, 0x10800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* 16C752 DUART port B (COM6) */
108 { 0xf0002000, 0x11000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* COM1 RTS control (SYSC1RTS) */
109 { 0xf0003000, 0x11400000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* Status LED control (SYSLED) */
110 { 0xf0004000, 0x11800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* DTMF code read (SYSDTMF) */
111 { 0xf0005000, 0x11c00000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* LCD configure, enable (SYSLCDDE) */
112 { 0xf0006000, 0x12000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* COM1 DSR and motion sense (SYSC1DSR) */
113 { 0xf0007000, 0x12800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* COM3 xmit enable (SYSC3TEN) */
114 { 0xf0008000, 0x13000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* Control register A (SYSCTLA) */
115 { 0xf0009000, 0x13800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* Control register B (SYSCTLB) */
116 { 0xf000a000, 0x18000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* SMC91C96 */
117 { 0xf2800000, 0x4b800000, 0x00800000, DOMAIN_IO, 0, 1, 0, 0 }, /* MQ200 */
118 { 0xf4000000, 0x40000000, 0x00100000, DOMAIN_IO, 0, 1, 0, 0 }, /* SA-1111 */
119 LAST_DESC
120 };
121
pfs168_map_io(void)122 static void __init pfs168_map_io(void)
123 {
124 sa1100_map_io();
125 iotable_init(pfs168_io_desc);
126
127 sa1100_register_uart(0, 3);
128 sa1100_register_uart(1, 1);
129 }
130
131 MACHINE_START(PFS168, "Tulsa")
132 BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
133 #if defined(CONFIG_PFS168_CMDLINE)
134 BOOT_PARAMS(0xc0000100)
135 #endif
136 FIXUP(fixup_pfs168)
137 MAPIO(pfs168_map_io)
138 INITIRQ(pfs168_init_irq)
139 MACHINE_END
140