2 * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/platform_device.h>
12 #include <linux/mtd/physmap.h>
13 #include <linux/pci.h>
14 #include <linux/slab.h>
15 #include <linux/ioport.h>
16 #include <asm/reboot.h>
18 #include <asm/addrspace.h>
19 #include <asm/bootinfo.h>
24 #define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
26 static struct resource uart_resources
[] = {
28 .start
= ADM8668_UART0_BASE
,
29 .end
= ADM8668_UART0_BASE
+ 0xF,
30 .flags
= IORESOURCE_MEM
,
33 .start
= INT_LVL_UART0
,
34 .flags
= IORESOURCE_IRQ
,
38 static struct platform_device adm8668_uart_device
= {
39 .name
= "adm8668_uart",
41 .resource
= uart_resources
,
42 .num_resources
= ARRAY_SIZE(uart_resources
),
45 static struct resource eth0_resources
[] = {
47 .start
= ADM8668_LAN_BASE
,
48 .end
= ADM8668_LAN_BASE
+ 256,
49 .flags
= IORESOURCE_MEM
,
53 .flags
= IORESOURCE_IRQ
,
57 static struct platform_device adm8668_eth0_device
= {
58 .name
= "adm8668_eth",
60 .resource
= eth0_resources
,
61 .num_resources
= ARRAY_SIZE(eth0_resources
),
64 static struct resource eth1_resources
[] = {
66 .start
= ADM8668_WAN_BASE
,
67 .end
= ADM8668_WAN_BASE
+ 256,
68 .flags
= IORESOURCE_MEM
,
72 .flags
= IORESOURCE_IRQ
,
76 static struct platform_device adm8668_eth1_device
= {
77 .name
= "adm8668_eth",
79 .resource
= eth1_resources
,
80 .num_resources
= ARRAY_SIZE(eth1_resources
),
83 static void adm8668_restart(char *cmd
)
87 /* stop eth0 and eth1 */
88 ADM8668_LAN_REG(NETCSR6
) = BIT_1
|BIT_13
;
89 ADM8668_LAN_REG(NETCSR7
) = 0;
90 ADM8668_WAN_REG(NETCSR6
) = BIT_1
|BIT_13
;
91 ADM8668_WAN_REG(NETCSR7
) = 0;
94 ADM8668_WAN_REG(NETCSR37
) = 0x20;
95 for (i
= 0; i
< 10000; i
++)
97 ADM8668_WAN_REG(NETCSR37
) = 0;
98 for (i
= 0; i
< 10000; i
++)
101 *(volatile unsigned int *)0xB1600000 = 1; /* reset eth0 mac */
102 *(volatile unsigned int *)0xB1A00000 = 1; /* reset eth1 mac */
103 *(volatile unsigned int *)0xB1800000 = 1; /* reset wlan0 mac */
106 for (i
= 0; i
< 1000; i
++)
108 ADM8668_CONFIG_REG(ADM8668_CR1
) = BIT_0
;
111 int __devinit
adm8668_devs_register(void)
113 _machine_restart
= adm8668_restart
;
114 platform_device_register(&adm8668_uart_device
);
115 platform_device_register(&adm8668_eth0_device
);
116 platform_device_register(&adm8668_eth1_device
);
121 void __init
plat_time_init(void)
123 int adj
= (ADM8668_CONFIG_REG(ADM8668_CR3
) >> 11) & 0xf;
125 /* adjustable clock selection
126 CR3 bit 14~11, 0000 -> 175MHz, 0001 -> 180MHz, etc... */
128 mips_hpt_frequency
= (SYS_CLOCK
+ adj
* 5000000) / 2;
129 printk("ADM8668 CPU clock: %d MHz\n", 2*mips_hpt_frequency
/ 1000000);
132 void __init
plat_mem_setup(void)
134 /* prom_init seemed like easier place for this. it's tooo simple */
137 const char *get_system_type(void)
139 unsigned long chipid
= ADM8668_CONFIG_REG(ADM8668_CR0
);
140 int adj
= (ADM8668_CONFIG_REG(ADM8668_CR3
) >> 11) & 0xf;
141 int product
, revision
, mhz
;
144 product
= chipid
>> 16;
145 revision
= chipid
& 0xffff;
146 mhz
= (SYS_CLOCK
/1000000) + (adj
* 5);
148 /* i getting fancy :\ */
149 snprintf(ret
, sizeof(ret
), "ADM%xr%x %dMHz", product
, revision
, mhz
);
154 arch_initcall(adm8668_devs_register
);