src/devices/dev_sandpoint.c

/*
 *  Copyright (C) 2005-2007  Anders Gavare.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright  
 *     notice, this list of conditions and the following disclaimer in the 
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE   
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *   
 *
 *  $Id: dev_sandpoint.c,v 1.9 2007/06/15 19:57:33 debug Exp $
 *  
 *  COMMENT: Artesyn PM/PPC motherboard registers
 *
 *  NOTE/TODO: Only enough to boot NetBSD/sandpoint has been implemented.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "cpu.h"
#include "device.h"
#include "machine.h"
#include "memory.h"
#include "misc.h"

#include "sandpoint.h"


struct sandpoint_data {
        uint8_t         config0;
        uint8_t         config1;

        uint8_t         reset_reg;
};


DEVICE_ACCESS(sandpoint_board)
{
        struct sandpoint_data *d = extra;
        uint64_t idata = 0, odata = 0;

        if (writeflag == MEM_WRITE)
                idata = memory_readmax64(cpu, data, len);

        relative_addr += SANDPOINT_CONFIG0;

        switch (relative_addr) {

        case SANDPOINT_CONFIG0:
                if (writeflag==MEM_READ) {
                        odata = d->config0;
                } else {
                        debug("[ sandpoint: UNIMPLEMENTED write to SANDPOINT_CONFIG0:"
                            " 0x%02x ]\n", (int)idata);
                }
                break;

        case SANDPOINT_CONFIG1:
                if (writeflag==MEM_READ) {
                        odata = d->config1;
                } else {
                        debug("[ sandpoint: UNIMPLEMENTED write to SANDPOINT_CONFIG1:"
                            " 0x%02x ]\n", (int)idata);
                }
                break;

        case SANDPOINT_RESET:
                if (writeflag==MEM_READ) {
                        odata = d->reset_reg;
                } else {
                        if (d->reset_reg == SANDPOINT_RESET_SEQ_STEP1 &&
                            idata == SANDPOINT_RESET_SEQ_STEP2) {
                                cpu->running = 0;
                                cpu->machine->
                                    exit_without_entering_debugger = 1;
                        }
                        d->reset_reg = idata;
                }
                break;

        default:
                if (writeflag==MEM_READ) {
                        debug("[ sandpoint: UNIMPLEMENTED read from 0x%08lx ]\n",
                            (long)relative_addr);
                } else {
                        debug("[ sandpoint: UNIMPLEMENTED write to  0x%08lx:"
                            " 0x%02x ]\n", (long)relative_addr, (int)idata);
                }
        }

        if (writeflag == MEM_READ)
                memory_writemax64(cpu, data, len, odata);

        return 1;
}


DEVINIT(sandpoint)
{
        struct sandpoint_data *d;
        struct memory *mem = devinit->machine->memory;

        CHECK_ALLOCATION(d = malloc(sizeof(struct sandpoint_data)));
        memset(d, 0, sizeof(struct sandpoint_data));

        /*
         *  Based on how NetBSD/sandpoint's sandpoint_setup() works:
         *
         *  config0:
         *      bit 7           Is monarch (?).
         *      bit 5           Has ethernet.
         *      bit 4           1 = No RTC.
         *      bits 3..2       Flash size (00 = 256 MB, 01 = 128 MB,
         *                      10 = 64 MB, 11 = 32 MB).
         *      bits 1..0       Flash width (00 = 64, 01 = 32, 10 = 16, 11 = 0).
         *
         *  config1:
         *      bit 7           Boot device is FLASH (1) or ROM (0).
         *      bit 6           Has ECC.
         *      bits 5..4       Memory size: 00 = 32 MB, 01 = 64 MB,
         *                      10 = 128 MB, 11 = 256 MB.
         *      bits 3..2       L2 cache.
         *      bits 1..0       Bus frequency: 00 = 66.66 MHz, 01 = 83.33 MHz,
         *                      10 = 100.00 MHz, 11 = reserved?
         */
        d->config0 = 0x20;
        d->config1 = 0;

        if (mem->physical_max == 32*1048576) {
        } else if (mem->physical_max == 64*1048576) {
                d->config1 |= 0x01;
        } else if (mem->physical_max == 128*1048576) {
                d->config1 |= 0x10;
        } else if (mem->physical_max == 256*1048576) {
                d->config1 |= 0x11;
        } else {
                fatal("A PM/PPC can have 32, 64, 128, or 256 MB RAM.\n");
                exit(1);
        }

        memory_device_register(mem, "sandpoint_board",
            SANDPOINT_CONFIG0, 0x10, dev_sandpoint_board_access, d, DM_DEFAULT, NULL);

        return 1;
}

1	dpavlin	4	/*
2	dpavlin	34	* Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
3	dpavlin	4	*
4			* Redistribution and use in source and binary forms, with or without
5			* modification, are permitted provided that the following conditions are met:
6			*
7			* 1. Redistributions of source code must retain the above copyright
8			* notice, this list of conditions and the following disclaimer.
9			* 2. Redistributions in binary form must reproduce the above copyright
10			* notice, this list of conditions and the following disclaimer in the
11			* documentation and/or other materials provided with the distribution.
12			* 3. The name of the author may not be used to endorse or promote products
13			* derived from this software without specific prior written permission.
14			*
15			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25			* SUCH DAMAGE.
26			*
27			*
28	dpavlin	49	* $Id: dev_sandpoint.c,v 1.9 2007/06/15 19:57:33 debug Exp $
29	dpavlin	4	*
30	dpavlin	42	* COMMENT: Artesyn PM/PPC motherboard registers
31	dpavlin	4	*
32	dpavlin	49	* NOTE/TODO: Only enough to boot NetBSD/sandpoint has been implemented.
33	dpavlin	4	*/
34
35			#include <stdio.h>
36			#include <stdlib.h>
37			#include <string.h>
38
39			#include "cpu.h"
40	dpavlin	34	#include "device.h"
41	dpavlin	4	#include "machine.h"
42			#include "memory.h"
43			#include "misc.h"
44
45	dpavlin	49	#include "sandpoint.h"
46	dpavlin	4
47
48	dpavlin	49	struct sandpoint_data {
49	dpavlin	4	uint8_t config0;
50			uint8_t config1;
51
52			uint8_t reset_reg;
53			};
54
55
56	dpavlin	49	DEVICE_ACCESS(sandpoint_board)
57	dpavlin	4	{
58	dpavlin	49	struct sandpoint_data *d = extra;
59	dpavlin	4	uint64_t idata = 0, odata = 0;
60
61	dpavlin	18	if (writeflag == MEM_WRITE)
62			idata = memory_readmax64(cpu, data, len);
63	dpavlin	4
64	dpavlin	49	relative_addr += SANDPOINT_CONFIG0;
65	dpavlin	4
66			switch (relative_addr) {
67	dpavlin	42
68	dpavlin	49	case SANDPOINT_CONFIG0:
69	dpavlin	4	if (writeflag==MEM_READ) {
70			odata = d->config0;
71			} else {
72	dpavlin	49	debug("[ sandpoint: UNIMPLEMENTED write to SANDPOINT_CONFIG0:"
73	dpavlin	4	" 0x%02x ]\n", (int)idata);
74			}
75			break;
76	dpavlin	42
77	dpavlin	49	case SANDPOINT_CONFIG1:
78	dpavlin	4	if (writeflag==MEM_READ) {
79			odata = d->config1;
80			} else {
81	dpavlin	49	debug("[ sandpoint: UNIMPLEMENTED write to SANDPOINT_CONFIG1:"
82	dpavlin	4	" 0x%02x ]\n", (int)idata);
83			}
84			break;
85	dpavlin	42
86	dpavlin	49	case SANDPOINT_RESET:
87	dpavlin	4	if (writeflag==MEM_READ) {
88			odata = d->reset_reg;
89			} else {
90	dpavlin	49	if (d->reset_reg == SANDPOINT_RESET_SEQ_STEP1 &&
91			idata == SANDPOINT_RESET_SEQ_STEP2) {
92	dpavlin	4	cpu->running = 0;
93			cpu->machine->
94			exit_without_entering_debugger = 1;
95			}
96			d->reset_reg = idata;
97			}
98			break;
99	dpavlin	42
100	dpavlin	4	default:
101			if (writeflag==MEM_READ) {
102	dpavlin	49	debug("[ sandpoint: UNIMPLEMENTED read from 0x%08lx ]\n",
103	dpavlin	4	(long)relative_addr);
104			} else {
105	dpavlin	49	debug("[ sandpoint: UNIMPLEMENTED write to 0x%08lx:"
106	dpavlin	4	" 0x%02x ]\n", (long)relative_addr, (int)idata);
107			}
108			}
109
110			if (writeflag == MEM_READ)
111			memory_writemax64(cpu, data, len, odata);
112
113			return 1;
114			}
115
116
117	dpavlin	49	DEVINIT(sandpoint)
118	dpavlin	4	{
119	dpavlin	49	struct sandpoint_data *d;
120	dpavlin	34	struct memory *mem = devinit->machine->memory;
121	dpavlin	4
122	dpavlin	49	CHECK_ALLOCATION(d = malloc(sizeof(struct sandpoint_data)));
123			memset(d, 0, sizeof(struct sandpoint_data));
124	dpavlin	4
125			/*
126	dpavlin	49	* Based on how NetBSD/sandpoint's sandpoint_setup() works:
127	dpavlin	4	*
128			* config0:
129			* bit 7 Is monarch (?).
130			* bit 5 Has ethernet.
131	dpavlin	20	* bit 4 1 = No RTC.
132	dpavlin	4	* bits 3..2 Flash size (00 = 256 MB, 01 = 128 MB,
133			* 10 = 64 MB, 11 = 32 MB).
134			* bits 1..0 Flash width (00 = 64, 01 = 32, 10 = 16, 11 = 0).
135			*
136			* config1:
137			* bit 7 Boot device is FLASH (1) or ROM (0).
138			* bit 6 Has ECC.
139			* bits 5..4 Memory size: 00 = 32 MB, 01 = 64 MB,
140			* 10 = 128 MB, 11 = 256 MB.
141			* bits 3..2 L2 cache.
142			* bits 1..0 Bus frequency: 00 = 66.66 MHz, 01 = 83.33 MHz,
143			* 10 = 100.00 MHz, 11 = reserved?
144			*/
145	dpavlin	20	d->config0 = 0x20;
146			d->config1 = 0;
147	dpavlin	4
148	dpavlin	20	if (mem->physical_max == 32*1048576) {
149			} else if (mem->physical_max == 64*1048576) {
150			d->config1 \|= 0x01;
151			} else if (mem->physical_max == 128*1048576) {
152			d->config1 \|= 0x10;
153			} else if (mem->physical_max == 256*1048576) {
154			d->config1 \|= 0x11;
155			} else {
156			fatal("A PM/PPC can have 32, 64, 128, or 256 MB RAM.\n");
157			exit(1);
158			}
159
160	dpavlin	49	memory_device_register(mem, "sandpoint_board",
161			SANDPOINT_CONFIG0, 0x10, dev_sandpoint_board_access, d, DM_DEFAULT, NULL);
162	dpavlin	34
163			return 1;
164	dpavlin	4	}
165