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/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_pmppc.c,v 1.5 2005/11/17 13:53:42 debug Exp $ |
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* |
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* PM/PPC devices. |
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* |
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* TODO |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "cpu.h" |
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#include "devices.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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|
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#include "pmppc.h" |
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|
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|
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struct pmppc_data { |
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uint8_t config0; |
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uint8_t config1; |
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|
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uint8_t reset_reg; |
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}; |
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|
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|
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/* |
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* dev_pmppc_board_access(): |
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*/ |
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int dev_pmppc_board_access(struct cpu *cpu, struct memory *mem, |
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uint64_t relative_addr, unsigned char *data, size_t len, int writeflag, |
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void *extra) |
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{ |
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struct pmppc_data *d = extra; |
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uint64_t idata = 0, odata = 0; |
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|
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if (writeflag == MEM_WRITE) |
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idata = memory_readmax64(cpu, data, len); |
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|
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relative_addr += PMPPC_CONFIG0; |
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|
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switch (relative_addr) { |
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case PMPPC_CONFIG0: |
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if (writeflag==MEM_READ) { |
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odata = d->config0; |
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} else { |
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debug("[ pmppc: UNIMPLEMENTED write to PMPPC_CONFIG0:" |
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" 0x%02x ]\n", (int)idata); |
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} |
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break; |
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case PMPPC_CONFIG1: |
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if (writeflag==MEM_READ) { |
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odata = d->config1; |
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} else { |
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debug("[ pmppc: UNIMPLEMENTED write to PMPPC_CONFIG1:" |
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" 0x%02x ]\n", (int)idata); |
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} |
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break; |
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case PMPPC_RESET: |
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if (writeflag==MEM_READ) { |
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odata = d->reset_reg; |
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} else { |
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if (d->reset_reg == PMPPC_RESET_SEQ_STEP1 && |
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idata == PMPPC_RESET_SEQ_STEP2) { |
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cpu->running = 0; |
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cpu->machine-> |
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exit_without_entering_debugger = 1; |
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} |
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d->reset_reg = idata; |
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} |
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break; |
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default: |
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if (writeflag==MEM_READ) { |
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debug("[ pmppc: UNIMPLEMENTED read from 0x%08lx ]\n", |
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(long)relative_addr); |
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} else { |
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debug("[ pmppc: UNIMPLEMENTED write to 0x%08lx:" |
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" 0x%02x ]\n", (long)relative_addr, (int)idata); |
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} |
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} |
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|
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if (writeflag == MEM_READ) |
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memory_writemax64(cpu, data, len, odata); |
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|
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return 1; |
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} |
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|
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|
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/* |
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* dev_pmppc_init(): |
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*/ |
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void dev_pmppc_init(struct memory *mem) |
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{ |
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struct pmppc_data *d; |
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|
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d = malloc(sizeof(struct pmppc_data)); |
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if (d == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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memset(d, 0, sizeof(struct pmppc_data)); |
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|
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/* |
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* Based on how NetBSD/pmppc's pmppc_setup() works: |
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* |
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* config0: |
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* bit 7 Is monarch (?). |
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* bit 5 Has ethernet. |
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* bit 4 1 = No RTC. |
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* bits 3..2 Flash size (00 = 256 MB, 01 = 128 MB, |
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* 10 = 64 MB, 11 = 32 MB). |
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* bits 1..0 Flash width (00 = 64, 01 = 32, 10 = 16, 11 = 0). |
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* |
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* config1: |
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* bit 7 Boot device is FLASH (1) or ROM (0). |
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* bit 6 Has ECC. |
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* bits 5..4 Memory size: 00 = 32 MB, 01 = 64 MB, |
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* 10 = 128 MB, 11 = 256 MB. |
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* bits 3..2 L2 cache. |
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* bits 1..0 Bus frequency: 00 = 66.66 MHz, 01 = 83.33 MHz, |
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* 10 = 100.00 MHz, 11 = reserved? |
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*/ |
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d->config0 = 0x20; |
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d->config1 = 0; |
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|
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if (mem->physical_max == 32*1048576) { |
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} else if (mem->physical_max == 64*1048576) { |
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d->config1 |= 0x01; |
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} else if (mem->physical_max == 128*1048576) { |
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d->config1 |= 0x10; |
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} else if (mem->physical_max == 256*1048576) { |
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d->config1 |= 0x11; |
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} else { |
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fatal("A PM/PPC can have 32, 64, 128, or 256 MB RAM.\n"); |
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exit(1); |
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} |
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|
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memory_device_register(mem, "pmppc_board", |
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PMPPC_CONFIG0, 0x10, dev_pmppc_board_access, d, DM_DEFAULT, NULL); |
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} |
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