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-rw-r--r--arch/mips/au1000/csb250/Makefile8
-rw-r--r--arch/mips/au1000/csb250/board_setup.c239
-rw-r--r--arch/mips/au1000/csb250/init.c95
-rw-r--r--arch/mips/au1000/csb250/irqmap.c60
4 files changed, 402 insertions, 0 deletions
diff --git a/arch/mips/au1000/csb250/Makefile b/arch/mips/au1000/csb250/Makefile
new file mode 100644
index 000000000000..c0c4dcdccae8
--- /dev/null
+++ b/arch/mips/au1000/csb250/Makefile
@@ -0,0 +1,8 @@
1#
2# Copyright 2002 Cogent Computer Systems
3# dan@embeddededge.com
4#
5# Makefile for the Cogent CSB250 Au1500 board. Copied from Pb1500.
6#
7
8obj-y := init.o board_setup.o irqmap.o
diff --git a/arch/mips/au1000/csb250/board_setup.c b/arch/mips/au1000/csb250/board_setup.c
new file mode 100644
index 000000000000..90426eaffb23
--- /dev/null
+++ b/arch/mips/au1000/csb250/board_setup.c
@@ -0,0 +1,239 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Cogent CSB250 board setup.
5 *
6 * Copyright 2002 Cogent Computer Systems, Inc.
7 * dan@embeddededge.com
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
20 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29#include <linux/config.h>
30#include <linux/init.h>
31#include <linux/sched.h>
32#include <linux/ioport.h>
33#include <linux/mm.h>
34#include <linux/console.h>
35#include <linux/mc146818rtc.h>
36#include <linux/delay.h>
37
38#include <asm/cpu.h>
39#include <asm/bootinfo.h>
40#include <asm/irq.h>
41#include <asm/keyboard.h>
42#include <asm/mipsregs.h>
43#include <asm/reboot.h>
44#include <asm/pgtable.h>
45#include <asm/au1000.h>
46#include <asm/csb250.h>
47
48extern int (*board_pci_idsel)(unsigned int devsel, int assert);
49int csb250_pci_idsel(unsigned int devsel, int assert);
50
51void __init board_setup(void)
52{
53 u32 pin_func, pin_val;
54 u32 sys_freqctrl, sys_clksrc;
55
56
57 // set AUX clock to 12MHz * 8 = 96 MHz
58 au_writel(8, SYS_AUXPLL);
59 au_writel(0, SYS_PINSTATERD);
60 udelay(100);
61
62#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
63
64 /* GPIO201 is input for PCMCIA card detect */
65 /* GPIO203 is input for PCMCIA interrupt request */
66 au_writel(au_readl(GPIO2_DIR) & (u32)(~((1<<1)|(1<<3))), GPIO2_DIR);
67
68 /* zero and disable FREQ2 */
69 sys_freqctrl = au_readl(SYS_FREQCTRL0);
70 sys_freqctrl &= ~0xFFF00000;
71 au_writel(sys_freqctrl, SYS_FREQCTRL0);
72
73 /* zero and disable USBH/USBD clocks */
74 sys_clksrc = au_readl(SYS_CLKSRC);
75 sys_clksrc &= ~0x00007FE0;
76 au_writel(sys_clksrc, SYS_CLKSRC);
77
78 sys_freqctrl = au_readl(SYS_FREQCTRL0);
79 sys_freqctrl &= ~0xFFF00000;
80
81 sys_clksrc = au_readl(SYS_CLKSRC);
82 sys_clksrc &= ~0x00007FE0;
83
84 // FREQ2 = aux/2 = 48 MHz
85 sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20));
86 au_writel(sys_freqctrl, SYS_FREQCTRL0);
87
88 /*
89 * Route 48MHz FREQ2 into USB Host and/or Device
90 */
91#ifdef CONFIG_USB_OHCI
92 sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
93#endif
94#ifdef CONFIG_AU1X00_USB_DEVICE
95 sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
96#endif
97 au_writel(sys_clksrc, SYS_CLKSRC);
98
99
100 pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
101#ifndef CONFIG_AU1X00_USB_DEVICE
102 // 2nd USB port is USB host
103 pin_func |= 0x8000;
104#endif
105 au_writel(pin_func, SYS_PINFUNC);
106#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
107
108 /* Configure GPIO2....it's used by PCI among other things.
109 */
110
111 /* Make everything but GP200 (PCI RST) an input until we get
112 * the pins set correctly.
113 */
114 au_writel(0x00000001, GPIO2_DIR);
115
116 /* Set the pins used for output.
117 * A zero bit will leave PCI reset, LEDs off, power up USB,
118 * IDSEL disabled.
119 */
120 pin_val = ((3 << 30) | (7 << 19) | (1 << 17) | (1 << 16));
121 au_writel(pin_val, GPIO2_OUTPUT);
122
123 /* Set the output direction.
124 */
125 pin_val = ((3 << 14) | (7 << 3) | (1 << 1) | (1 << 0));
126 au_writel(pin_val, GPIO2_DIR);
127
128#ifdef CONFIG_PCI
129 /* Use FREQ1 for the PCI output clock. We use the
130 * CPU clock of 384 MHz divided by 12 to get 32 MHz PCI.
131 * If Michael changes the CPU speed, we need to adjust
132 * that here as well :-).
133 */
134
135 /* zero and disable FREQ1
136 */
137 sys_freqctrl = au_readl(SYS_FREQCTRL0);
138 sys_freqctrl &= ~0x000ffc00;
139 au_writel(sys_freqctrl, SYS_FREQCTRL0);
140
141 /* zero and disable PCI clock
142 */
143 sys_clksrc = au_readl(SYS_CLKSRC);
144 sys_clksrc &= ~0x000f8000;
145 au_writel(sys_clksrc, SYS_CLKSRC);
146
147 /* Get current values (which really should match above).
148 */
149 sys_freqctrl = au_readl(SYS_FREQCTRL0);
150 sys_freqctrl &= ~0x000ffc00;
151
152 sys_clksrc = au_readl(SYS_CLKSRC);
153 sys_clksrc &= ~0x000f8000;
154
155 /* FREQ1 = cpu/12 = 32 MHz
156 */
157 sys_freqctrl |= ((5<<12) | (1<<11) | (0<<10));
158 au_writel(sys_freqctrl, SYS_FREQCTRL0);
159
160 /* Just connect the clock without further dividing.
161 */
162 sys_clksrc |= ((3<<17) | (0<<16) | (0<<15));
163 au_writel(sys_clksrc, SYS_CLKSRC);
164
165 udelay(1);
166
167 /* Now that clocks should be running, take PCI out of reset.
168 */
169 pin_val = au_readl(GPIO2_OUTPUT);
170 pin_val |= ((1 << 16) | 1);
171 au_writel(pin_val, GPIO2_OUTPUT);
172
173 // Setup PCI bus controller
174 au_writel(0, Au1500_PCI_CMEM);
175 au_writel(0x00003fff, Au1500_CFG_BASE);
176
177 /* We run big endian without any of the software byte swapping,
178 * so configure the PCI bridge to help us out.
179 */
180 au_writel(0xf | (2<<6) | (1<<5) | (1<<4), Au1500_PCI_CFG);
181
182 au_writel(0xf0000000, Au1500_PCI_MWMASK_DEV);
183 au_writel(0, Au1500_PCI_MWBASE_REV_CCL);
184 au_writel(0x02a00356, Au1500_PCI_STATCMD);
185 au_writel(0x00003c04, Au1500_PCI_HDRTYPE);
186 au_writel(0x00000008, Au1500_PCI_MBAR);
187 au_sync();
188
189 board_pci_idsel = csb250_pci_idsel;
190#endif
191
192 /* Enable sys bus clock divider when IDLE state or no bus activity. */
193 au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
194
195#ifdef CONFIG_RTC
196 // Enable the RTC if not already enabled
197 if (!(au_readl(0xac000028) & 0x20)) {
198 printk("enabling clock ...\n");
199 au_writel((au_readl(0xac000028) | 0x20), 0xac000028);
200 }
201 // Put the clock in BCD mode
202 if (readl(0xac00002C) & 0x4) { /* reg B */
203 au_writel(au_readl(0xac00002c) & ~0x4, 0xac00002c);
204 au_sync();
205 }
206#endif
207}
208
209/* The IDSEL is selected in the GPIO2 register. We will make device
210 * 12 appear in slot 0 and device 13 appear in slot 1.
211 */
212int
213csb250_pci_idsel(unsigned int devsel, int assert)
214{
215 int retval;
216 unsigned int gpio2_pins;
217
218 retval = 1;
219
220 /* First, disable both selects, then assert the one requested.
221 */
222 au_writel(0xc000c000, GPIO2_OUTPUT);
223 au_sync();
224
225 if (assert) {
226 if (devsel == 12)
227 gpio2_pins = 0x40000000;
228 else if (devsel == 13)
229 gpio2_pins = 0x80000000;
230 else {
231 gpio2_pins = 0xc000c000;
232 retval = 0;
233 }
234 au_writel(gpio2_pins, GPIO2_OUTPUT);
235 }
236 au_sync();
237
238 return retval;
239}
diff --git a/arch/mips/au1000/csb250/init.c b/arch/mips/au1000/csb250/init.c
new file mode 100644
index 000000000000..4320057fc439
--- /dev/null
+++ b/arch/mips/au1000/csb250/init.c
@@ -0,0 +1,95 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Cogent CSB250 board setup
5 *
6 * Copyright 2002 Cogent Computer Systems, Inc.
7 * dan@embeddededge.com
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
20 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30#include <linux/init.h>
31#include <linux/mm.h>
32#include <linux/sched.h>
33#include <linux/bootmem.h>
34#include <asm/addrspace.h>
35#include <asm/bootinfo.h>
36#include <linux/string.h>
37#include <linux/kernel.h>
38#include <linux/sched.h>
39
40int prom_argc;
41char **prom_argv, **prom_envp;
42extern void __init prom_init_cmdline(void);
43extern char *prom_getenv(char *envname);
44
45/* When we get initrd working someday.........
46*/
47int my_initrd_start, my_initrd_size;
48
49/* Start arguments and environment.
50*/
51static char *csb_env[2];
52static char *csb_arg[4];
53static char *arg1 = "console=ttyS3,38400";
54static char *arg2 = "root=/dev/nfs rw ip=any";
55static char *env1 = "ethaddr=00:30:23:50:00:00";
56
57const char *get_system_type(void)
58{
59 return "Cogent CSB250";
60}
61
62int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
63{
64 unsigned char *memsize_str;
65 unsigned long memsize;
66
67 /* We use a0 and a1 to pass initrd start and size.
68 */
69 if (((uint) argc > 0) && ((uint)argv > 0)) {
70 my_initrd_start = (uint)argc;
71 my_initrd_size = (uint)argv;
72 }
73
74 /* First argv is ignored.
75 */
76 prom_argc = 3;
77 prom_argv = csb_arg;
78 prom_envp = csb_env;
79 csb_arg[1] = arg1;
80 csb_arg[2] = arg2;
81 csb_env[0] = env1;
82
83 mips_machgroup = MACH_GROUP_ALCHEMY;
84 mips_machtype = MACH_CSB250;
85
86 prom_init_cmdline();
87 memsize_str = prom_getenv("memsize");
88 if (!memsize_str) {
89 memsize = 0x02000000;
90 } else {
91 memsize = simple_strtol(memsize_str, NULL, 0);
92 }
93 add_memory_region(0, memsize, BOOT_MEM_RAM);
94 return 0;
95}
diff --git a/arch/mips/au1000/csb250/irqmap.c b/arch/mips/au1000/csb250/irqmap.c
new file mode 100644
index 000000000000..5cb1166be35c
--- /dev/null
+++ b/arch/mips/au1000/csb250/irqmap.c
@@ -0,0 +1,60 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * Au1xxx irq map table
4 *
5 * Copyright 2003 Embedded Edge, LLC
6 * dan@embeddededge.com
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28#include <linux/errno.h>
29#include <linux/init.h>
30#include <linux/irq.h>
31#include <linux/kernel_stat.h>
32#include <linux/module.h>
33#include <linux/signal.h>
34#include <linux/sched.h>
35#include <linux/types.h>
36#include <linux/interrupt.h>
37#include <linux/ioport.h>
38#include <linux/timex.h>
39#include <linux/slab.h>
40#include <linux/random.h>
41#include <linux/delay.h>
42#include <linux/bitops.h>
43
44#include <asm/bootinfo.h>
45#include <asm/io.h>
46#include <asm/mipsregs.h>
47#include <asm/system.h>
48#include <asm/au1000.h>
49
50au1xxx_irq_map_t au1xxx_irq_map[] = {
51
52 { AU1500_GPIO_204, INTC_INT_HIGH_LEVEL, 0},
53 { AU1500_GPIO_201, INTC_INT_LOW_LEVEL, 0 },
54 { AU1500_GPIO_202, INTC_INT_LOW_LEVEL, 0 },
55 { AU1500_GPIO_203, INTC_INT_LOW_LEVEL, 0 },
56 { AU1500_GPIO_205, INTC_INT_LOW_LEVEL, 0 },
57 { AU1500_GPIO_207, INTC_INT_LOW_LEVEL, 0 },
58};
59
60int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-14 14:08:32 -0500