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authorSongmao Tian <tiansm@lemote.com>2007-06-06 02:52:38 -0400
committerRalf Baechle <ralf@linux-mips.org>2007-07-10 12:33:02 -0400
commit42d226c7248a28ff8c478c06b7e9bd9ef5d73574 (patch)
tree7749c1204cbdb481ddece008dc09234c48b769db /arch/mips/lemote
parent2a21c7300b53b744d16903256a172d9cbcfdd03e (diff)
[MIPS] New files for lemote fulong mini-PC support
Signed-off-by: Fuxin Zhang <zhangfx@lemote.com> Signed-off-by: Songmao Tian <tiansm@lemote.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/lemote')
-rw-r--r--arch/mips/lemote/lm2e/Makefile7
-rw-r--r--arch/mips/lemote/lm2e/bonito-irq.c74
-rw-r--r--arch/mips/lemote/lm2e/dbg_io.c146
-rw-r--r--arch/mips/lemote/lm2e/irq.c145
-rw-r--r--arch/mips/lemote/lm2e/mem.c23
-rw-r--r--arch/mips/lemote/lm2e/pci.c93
-rw-r--r--arch/mips/lemote/lm2e/prom.c104
-rw-r--r--arch/mips/lemote/lm2e/reset.c41
-rw-r--r--arch/mips/lemote/lm2e/setup.c134
9 files changed, 767 insertions, 0 deletions
diff --git a/arch/mips/lemote/lm2e/Makefile b/arch/mips/lemote/lm2e/Makefile
new file mode 100644
index 000000000000..fb1b48c48cb3
--- /dev/null
+++ b/arch/mips/lemote/lm2e/Makefile
@@ -0,0 +1,7 @@
1#
2# Makefile for Lemote Fulong mini-PC board.
3#
4
5obj-y += setup.o prom.o reset.o irq.o pci.o bonito-irq.o dbg_io.o mem.o
6EXTRA_AFLAGS := $(CFLAGS)
7
diff --git a/arch/mips/lemote/lm2e/bonito-irq.c b/arch/mips/lemote/lm2e/bonito-irq.c
new file mode 100644
index 000000000000..8fc3bce7075b
--- /dev/null
+++ b/arch/mips/lemote/lm2e/bonito-irq.c
@@ -0,0 +1,74 @@
1/*
2 * Copyright 2001 MontaVista Software Inc.
3 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
4 * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
5 *
6 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
7 * Author: Fuxin Zhang, zhangfx@lemote.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/errno.h>
31#include <linux/init.h>
32#include <linux/io.h>
33#include <linux/types.h>
34#include <linux/interrupt.h>
35#include <linux/irq.h>
36
37#include <asm/mips-boards/bonito64.h>
38
39
40static inline void bonito_irq_enable(unsigned int irq)
41{
42 BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE));
43 mmiowb();
44}
45
46static inline void bonito_irq_disable(unsigned int irq)
47{
48 BONITO_INTENCLR = (1 << (irq - BONITO_IRQ_BASE));
49 mmiowb();
50}
51
52static struct irq_chip bonito_irq_type = {
53 .name = "bonito_irq",
54 .ack = bonito_irq_disable,
55 .mask = bonito_irq_disable,
56 .mask_ack = bonito_irq_disable,
57 .unmask = bonito_irq_enable,
58};
59
60static struct irqaction dma_timeout_irqaction = {
61 .handler = no_action,
62 .name = "dma_timeout",
63};
64
65void bonito_irq_init(void)
66{
67 u32 i;
68
69 for (i = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++) {
70 set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
71 }
72
73 setup_irq(BONITO_IRQ_BASE + 10, &dma_timeout_irqaction);
74}
diff --git a/arch/mips/lemote/lm2e/dbg_io.c b/arch/mips/lemote/lm2e/dbg_io.c
new file mode 100644
index 000000000000..6c95da3ca76f
--- /dev/null
+++ b/arch/mips/lemote/lm2e/dbg_io.c
@@ -0,0 +1,146 @@
1/*
2 * Copyright 2001 MontaVista Software Inc.
3 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
4 * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
5 *
6 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
7 * Author: Fuxin Zhang, zhangfx@lemote.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
31#include <linux/io.h>
32#include <linux/init.h>
33#include <linux/types.h>
34
35#include <asm/serial.h>
36
37#define UART16550_BAUD_2400 2400
38#define UART16550_BAUD_4800 4800
39#define UART16550_BAUD_9600 9600
40#define UART16550_BAUD_19200 19200
41#define UART16550_BAUD_38400 38400
42#define UART16550_BAUD_57600 57600
43#define UART16550_BAUD_115200 115200
44
45#define UART16550_PARITY_NONE 0
46#define UART16550_PARITY_ODD 0x08
47#define UART16550_PARITY_EVEN 0x18
48#define UART16550_PARITY_MARK 0x28
49#define UART16550_PARITY_SPACE 0x38
50
51#define UART16550_DATA_5BIT 0x0
52#define UART16550_DATA_6BIT 0x1
53#define UART16550_DATA_7BIT 0x2
54#define UART16550_DATA_8BIT 0x3
55
56#define UART16550_STOP_1BIT 0x0
57#define UART16550_STOP_2BIT 0x4
58
59/* ----------------------------------------------------- */
60
61/* === CONFIG === */
62#ifdef CONFIG_64BIT
63#define BASE (0xffffffffbfd003f8)
64#else
65#define BASE (0xbfd003f8)
66#endif
67
68#define MAX_BAUD BASE_BAUD
69/* === END OF CONFIG === */
70
71#define REG_OFFSET 1
72
73/* register offset */
74#define OFS_RCV_BUFFER 0
75#define OFS_TRANS_HOLD 0
76#define OFS_SEND_BUFFER 0
77#define OFS_INTR_ENABLE (1*REG_OFFSET)
78#define OFS_INTR_ID (2*REG_OFFSET)
79#define OFS_DATA_FORMAT (3*REG_OFFSET)
80#define OFS_LINE_CONTROL (3*REG_OFFSET)
81#define OFS_MODEM_CONTROL (4*REG_OFFSET)
82#define OFS_RS232_OUTPUT (4*REG_OFFSET)
83#define OFS_LINE_STATUS (5*REG_OFFSET)
84#define OFS_MODEM_STATUS (6*REG_OFFSET)
85#define OFS_RS232_INPUT (6*REG_OFFSET)
86#define OFS_SCRATCH_PAD (7*REG_OFFSET)
87
88#define OFS_DIVISOR_LSB (0*REG_OFFSET)
89#define OFS_DIVISOR_MSB (1*REG_OFFSET)
90
91/* memory-mapped read/write of the port */
92#define UART16550_READ(y) readb((char *)BASE + (y))
93#define UART16550_WRITE(y, z) writeb(z, (char *)BASE + (y))
94
95void debugInit(u32 baud, u8 data, u8 parity, u8 stop)
96{
97 u32 divisor;
98
99 /* disable interrupts */
100 UART16550_WRITE(OFS_INTR_ENABLE, 0);
101
102 /* set up buad rate */
103 /* set DIAB bit */
104 UART16550_WRITE(OFS_LINE_CONTROL, 0x80);
105
106 /* set divisor */
107 divisor = MAX_BAUD / baud;
108 UART16550_WRITE(OFS_DIVISOR_LSB, divisor & 0xff);
109 UART16550_WRITE(OFS_DIVISOR_MSB, (divisor & 0xff00) >> 8);
110
111 /* clear DIAB bit */
112 UART16550_WRITE(OFS_LINE_CONTROL, 0x0);
113
114 /* set data format */
115 UART16550_WRITE(OFS_DATA_FORMAT, data | parity | stop);
116}
117
118static int remoteDebugInitialized;
119
120u8 getDebugChar(void)
121{
122 if (!remoteDebugInitialized) {
123 remoteDebugInitialized = 1;
124 debugInit(UART16550_BAUD_115200,
125 UART16550_DATA_8BIT,
126 UART16550_PARITY_NONE, UART16550_STOP_1BIT);
127 }
128
129 while ((UART16550_READ(OFS_LINE_STATUS) & 0x1) == 0) ;
130 return UART16550_READ(OFS_RCV_BUFFER);
131}
132
133int putDebugChar(u8 byte)
134{
135 if (!remoteDebugInitialized) {
136 remoteDebugInitialized = 1;
137 /*
138 debugInit(UART16550_BAUD_115200,
139 UART16550_DATA_8BIT,
140 UART16550_PARITY_NONE, UART16550_STOP_1BIT); */
141 }
142
143 while ((UART16550_READ(OFS_LINE_STATUS) & 0x20) == 0) ;
144 UART16550_WRITE(OFS_SEND_BUFFER, byte);
145 return 1;
146}
diff --git a/arch/mips/lemote/lm2e/irq.c b/arch/mips/lemote/lm2e/irq.c
new file mode 100644
index 000000000000..05693bceaeaf
--- /dev/null
+++ b/arch/mips/lemote/lm2e/irq.c
@@ -0,0 +1,145 @@
1/*
2 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
3 * Author: Fuxin Zhang, zhangfx@lemote.com
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
11 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
13 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
16 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
17 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
20 *
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 */
26#include <linux/delay.h>
27#include <linux/io.h>
28#include <linux/irq.h>
29#include <linux/init.h>
30#include <linux/interrupt.h>
31#include <linux/irq.h>
32
33#include <asm/irq_cpu.h>
34#include <asm/i8259.h>
35#include <asm/mipsregs.h>
36#include <asm/mips-boards/bonito64.h>
37
38
39/*
40 * the first level int-handler will jump here if it is a bonito irq
41 */
42static void bonito_irqdispatch(void)
43{
44 u32 int_status;
45 int i;
46
47 /* workaround the IO dma problem: let cpu looping to allow DMA finish */
48 int_status = BONITO_INTISR;
49 if (int_status & (1 << 10)) {
50 while (int_status & (1 << 10)) {
51 udelay(1);
52 int_status = BONITO_INTISR;
53 }
54 }
55
56 /* Get pending sources, masked by current enables */
57 int_status = BONITO_INTISR & BONITO_INTEN;
58
59 if (int_status != 0) {
60 i = __ffs(int_status);
61 int_status &= ~(1 << i);
62 do_IRQ(BONITO_IRQ_BASE + i);
63 }
64}
65
66static void i8259_irqdispatch(void)
67{
68 int irq;
69
70 irq = i8259_irq();
71 if (irq >= 0) {
72 do_IRQ(irq);
73 } else {
74 spurious_interrupt();
75 }
76
77}
78
79asmlinkage void plat_irq_dispatch(void)
80{
81 unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
82
83 if (pending & CAUSEF_IP7) {
84 do_IRQ(MIPS_CPU_IRQ_BASE + 7);
85 } else if (pending & CAUSEF_IP5) {
86 i8259_irqdispatch();
87 } else if (pending & CAUSEF_IP2) {
88 bonito_irqdispatch();
89 } else {
90 spurious_interrupt();
91 }
92}
93
94static struct irqaction cascade_irqaction = {
95 .handler = no_action,
96 .mask = CPU_MASK_NONE,
97 .name = "cascade",
98};
99
100void __init arch_init_irq(void)
101{
102 extern void bonito_irq_init(void);
103
104 /*
105 * Clear all of the interrupts while we change the able around a bit.
106 * int-handler is not on bootstrap
107 */
108 clear_c0_status(ST0_IM | ST0_BEV);
109 local_irq_disable();
110
111 /* most bonito irq should be level triggered */
112 BONITO_INTEDGE = BONITO_ICU_SYSTEMERR | BONITO_ICU_MASTERERR |
113 BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
114 BONITO_INTSTEER = 0;
115
116 /*
117 * Mask out all interrupt by writing "1" to all bit position in
118 * the interrupt reset reg.
119 */
120 BONITO_INTENCLR = ~0;
121
122 /* init all controller
123 * 0-15 ------> i8259 interrupt
124 * 16-23 ------> mips cpu interrupt
125 * 32-63 ------> bonito irq
126 */
127
128 /* Sets the first-level interrupt dispatcher. */
129 mips_cpu_irq_init();
130 init_i8259_irqs();
131 bonito_irq_init();
132
133 /*
134 printk("GPIODATA=%x, GPIOIE=%x\n", BONITO_GPIODATA, BONITO_GPIOIE);
135 printk("INTEN=%x, INTSET=%x, INTCLR=%x, INTISR=%x\n",
136 BONITO_INTEN, BONITO_INTENSET,
137 BONITO_INTENCLR, BONITO_INTISR);
138 */
139
140 /* bonito irq at IP2 */
141 setup_irq(MIPS_CPU_IRQ_BASE + 2, &cascade_irqaction);
142 /* 8259 irq at IP5 */
143 setup_irq(MIPS_CPU_IRQ_BASE + 5, &cascade_irqaction);
144
145}
diff --git a/arch/mips/lemote/lm2e/mem.c b/arch/mips/lemote/lm2e/mem.c
new file mode 100644
index 000000000000..16cd21587d34
--- /dev/null
+++ b/arch/mips/lemote/lm2e/mem.c
@@ -0,0 +1,23 @@
1/*
2 * This program is free software; you can redistribute it and/or modify it
3 * under the terms of the GNU General Public License as published by the
4 * Free Software Foundation; either version 2 of the License, or (at your
5 * option) any later version.
6 */
7#include <linux/fs.h>
8#include <linux/fcntl.h>
9#include <linux/mm.h>
10
11/* override of arch/mips/mm/cache.c: __uncached_access */
12int __uncached_access(struct file *file, unsigned long addr)
13{
14 if (file->f_flags & O_SYNC)
15 return 1;
16
17 /*
18 * On the Lemote Loongson 2e system, the peripheral registers
19 * reside between 0x1000:0000 and 0x2000:0000.
20 */
21 return addr >= __pa(high_memory) ||
22 ((addr >= 0x10000000) && (addr < 0x20000000));
23}
diff --git a/arch/mips/lemote/lm2e/pci.c b/arch/mips/lemote/lm2e/pci.c
new file mode 100644
index 000000000000..1ade1cef3899
--- /dev/null
+++ b/arch/mips/lemote/lm2e/pci.c
@@ -0,0 +1,93 @@
1/*
2 * pci.c
3 *
4 * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
5 * Author: Fuxin Zhang, zhangfx@lemote.com
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 *
27 */
28#include <linux/types.h>
29#include <linux/pci.h>
30#include <linux/kernel.h>
31#include <linux/init.h>
32#include <asm/mips-boards/bonito64.h>
33
34extern struct pci_ops bonito64_pci_ops;
35
36static struct resource loongson2e_pci_mem_resource = {
37 .name = "LOONGSON2E PCI MEM",
38 .start = 0x14000000UL,
39 .end = 0x1fffffffUL,
40 .flags = IORESOURCE_MEM,
41};
42
43static struct resource loongson2e_pci_io_resource = {
44 .name = "LOONGSON2E PCI IO MEM",
45 .start = 0x00004000UL,
46 .end = IO_SPACE_LIMIT,
47 .flags = IORESOURCE_IO,
48};
49
50static struct pci_controller loongson2e_pci_controller = {
51 .pci_ops = &bonito64_pci_ops,
52 .io_resource = &loongson2e_pci_io_resource,
53 .mem_resource = &loongson2e_pci_mem_resource,
54 .mem_offset = 0x00000000UL,
55 .io_offset = 0x00000000UL,
56};
57
58static void __init ict_pcimap(void)
59{
60 /*
61 * local to PCI mapping: [256M,512M] -> [256M,512M]; differ from PMON
62 *
63 * CPU address space [256M,448M] is window for accessing pci space
64 * we set pcimap_lo[0,1,2] to map it to pci space [256M,448M]
65 * pcimap: bit18,pcimap_2; bit[17-12],lo2;bit[11-6],lo1;bit[5-0],lo0
66 */
67 /* 1,00 0110 ,0001 01,00 0000 */
68 BONITO_PCIMAP = 0x46140;
69
70 /* 1, 00 0010, 0000,01, 00 0000 */
71 /* BONITO_PCIMAP = 0x42040; */
72
73 /*
74 * PCI to local mapping: [2G,2G+256M] -> [0,256M]
75 */
76 BONITO_PCIBASE0 = 0x80000000;
77 BONITO_PCIBASE1 = 0x00800000;
78 BONITO_PCIBASE2 = 0x90000000;
79
80}
81
82static int __init pcibios_init(void)
83{
84 extern int pci_probe_only;
85 pci_probe_only = 0;
86
87 ict_pcimap();
88 register_pci_controller(&loongson2e_pci_controller);
89
90 return 0;
91}
92
93arch_initcall(pcibios_init);
diff --git a/arch/mips/lemote/lm2e/prom.c b/arch/mips/lemote/lm2e/prom.c
new file mode 100644
index 000000000000..67312d7acf2a
--- /dev/null
+++ b/arch/mips/lemote/lm2e/prom.c
@@ -0,0 +1,104 @@
1/*
2 * Based on Ocelot Linux port, which is
3 * Copyright 2001 MontaVista Software Inc.
4 * Author: jsun@mvista.com or jsun@junsun.net
5 *
6 * Copyright 2003 ICT CAS
7 * Author: Michael Guo <guoyi@ict.ac.cn>
8 *
9 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
10 * Author: Fuxin Zhang, zhangfx@lemote.com
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 */
17#include <linux/init.h>
18#include <linux/mm.h>
19#include <linux/sched.h>
20#include <linux/bootmem.h>
21
22#include <asm/addrspace.h>
23#include <asm/bootinfo.h>
24
25extern unsigned long bus_clock;
26extern unsigned long cpu_clock;
27extern unsigned int memsize, highmemsize;
28extern int putDebugChar(unsigned char byte);
29
30static int argc;
31/* pmon passes arguments in 32bit pointers */
32static int *arg;
33static int *env;
34
35const char *get_system_type(void)
36{
37 return "lemote-fulong";
38}
39
40void __init prom_init_cmdline(void)
41{
42 int i;
43 long l;
44
45 /* arg[0] is "g", the rest is boot parameters */
46 arcs_cmdline[0] = '\0';
47 for (i = 1; i < argc; i++) {
48 l = (long)arg[i];
49 if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
50 >= sizeof(arcs_cmdline))
51 break;
52 strcat(arcs_cmdline, ((char *)l));
53 strcat(arcs_cmdline, " ");
54 }
55}
56
57void __init prom_init(void)
58{
59 long l;
60 argc = fw_arg0;
61 arg = (int *)fw_arg1;
62 env = (int *)fw_arg2;
63
64 mips_machgroup = MACH_GROUP_LEMOTE;
65 mips_machtype = MACH_LEMOTE_FULONG;
66
67 prom_init_cmdline();
68
69 if ((strstr(arcs_cmdline, "console=")) == NULL)
70 strcat(arcs_cmdline, " console=ttyS0,115200");
71 if ((strstr(arcs_cmdline, "root=")) == NULL)
72 strcat(arcs_cmdline, " root=/dev/hda1");
73
74#define parse_even_earlier(res, option, p) \
75do { \
76 if (strncmp(option, (char *)p, strlen(option)) == 0) \
77 res = simple_strtol((char *)p + strlen(option"="), \
78 NULL, 10); \
79} while (0)
80
81 l = (long)*env;
82 while (l != 0) {
83 parse_even_earlier(bus_clock, "busclock", l);
84 parse_even_earlier(cpu_clock, "cpuclock", l);
85 parse_even_earlier(memsize, "memsize", l);
86 parse_even_earlier(highmemsize, "highmemsize", l);
87 env++;
88 l = (long)*env;
89 }
90 if (memsize == 0)
91 memsize = 256;
92
93 pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n",
94 bus_clock, cpu_clock, memsize, highmemsize);
95}
96
97void __init prom_free_prom_memory(void)
98{
99}
100
101void prom_putchar(char c)
102{
103 putDebugChar(c);
104}
diff --git a/arch/mips/lemote/lm2e/reset.c b/arch/mips/lemote/lm2e/reset.c
new file mode 100644
index 000000000000..099387a3827a
--- /dev/null
+++ b/arch/mips/lemote/lm2e/reset.c
@@ -0,0 +1,41 @@
1/*
2 * This program is free software; you can redistribute it and/or modify it
3 * under the terms of the GNU General Public License as published by the
4 * Free Software Foundation; either version 2 of the License, or (at your
5 * option) any later version.
6 *
7 * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
8 * Author: Fuxin Zhang, zhangfx@lemote.com
9 */
10#include <linux/pm.h>
11
12#include <asm/reboot.h>
13
14static void loongson2e_restart(char *command)
15{
16#ifdef CONFIG_32BIT
17 *(unsigned long *)0xbfe00104 &= ~(1 << 2);
18 *(unsigned long *)0xbfe00104 |= (1 << 2);
19#else
20 *(unsigned long *)0xffffffffbfe00104 &= ~(1 << 2);
21 *(unsigned long *)0xffffffffbfe00104 |= (1 << 2);
22#endif
23 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
24}
25
26static void loongson2e_halt(void)
27{
28 while (1) ;
29}
30
31static void loongson2e_power_off(void)
32{
33 loongson2e_halt();
34}
35
36void mips_reboot_setup(void)
37{
38 _machine_restart = loongson2e_restart;
39 _machine_halt = loongson2e_halt;
40 pm_power_off = loongson2e_power_off;
41}
diff --git a/arch/mips/lemote/lm2e/setup.c b/arch/mips/lemote/lm2e/setup.c
new file mode 100644
index 000000000000..0e4d1fa572b5
--- /dev/null
+++ b/arch/mips/lemote/lm2e/setup.c
@@ -0,0 +1,134 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * setup.c - board dependent boot routines
4 *
5 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
6 * Author: Fuxin Zhang, zhangfx@lemote.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 */
29#include <linux/bootmem.h>
30#include <linux/init.h>
31#include <linux/io.h>
32#include <linux/ioport.h>
33#include <linux/interrupt.h>
34#include <linux/irq.h>
35#include <linux/kernel.h>
36#include <linux/mc146818rtc.h>
37#include <linux/mm.h>
38#include <linux/module.h>
39#include <linux/pci.h>
40#include <linux/tty.h>
41#include <linux/types.h>
42
43#include <asm/bootinfo.h>
44#include <asm/mc146818-time.h>
45#include <asm/time.h>
46#include <asm/wbflush.h>
47
48#ifdef CONFIG_VT
49#include <linux/console.h>
50#include <linux/screen_info.h>
51#endif
52
53extern void mips_reboot_setup(void);
54
55#ifdef CONFIG_64BIT
56#define PTR_PAD(p) ((0xffffffff00000000)|((unsigned long long)(p)))
57#else
58#define PTR_PAD(p) (p)
59#endif
60
61unsigned long cpu_clock;
62unsigned long bus_clock;
63unsigned int memsize;
64unsigned int highmemsize = 0;
65
66void __init plat_timer_setup(struct irqaction *irq)
67{
68 setup_irq(MIPS_CPU_IRQ_BASE + 7, irq);
69}
70
71static void __init loongson2e_time_init(void)
72{
73 /* setup mips r4k timer */
74 mips_hpt_frequency = cpu_clock / 2;
75}
76
77static unsigned long __init mips_rtc_get_time(void)
78{
79 return mc146818_get_cmos_time();
80}
81
82void (*__wbflush)(void);
83EXPORT_SYMBOL(__wbflush);
84
85static void wbflush_loongson2e(void)
86{
87 asm(".set\tpush\n\t"
88 ".set\tnoreorder\n\t"
89 ".set mips3\n\t"
90 "sync\n\t"
91 "nop\n\t"
92 ".set\tpop\n\t"
93 ".set mips0\n\t");
94}
95
96void __init plat_mem_setup(void)
97{
98 set_io_port_base(PTR_PAD(0xbfd00000));
99
100 mips_reboot_setup();
101
102 board_time_init = loongson2e_time_init;
103 rtc_mips_get_time = mips_rtc_get_time;
104
105 __wbflush = wbflush_loongson2e;
106
107 add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
108#ifdef CONFIG_64BIT
109 if (highmemsize > 0) {
110 add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
111 }
112#endif
113
114#ifdef CONFIG_VT
115#if defined(CONFIG_VGA_CONSOLE)
116 conswitchp = &vga_con;
117
118 screen_info = (struct screen_info) {
119 0, 25, /* orig-x, orig-y */
120 0, /* unused */
121 0, /* orig-video-page */
122 0, /* orig-video-mode */
123 80, /* orig-video-cols */
124 0, 0, 0, /* ega_ax, ega_bx, ega_cx */
125 25, /* orig-video-lines */
126 VIDEO_TYPE_VGAC, /* orig-video-isVGA */
127 16 /* orig-video-points */
128 };
129#elif defined(CONFIG_DUMMY_CONSOLE)
130 conswitchp = &dummy_con;
131#endif
132#endif
133
134}
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-24 00:17:56 -0400