root / hw / mips_malta.c @ aaed909a
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/*
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* QEMU Malta board support
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*
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* Copyright (c) 2006 Aurelien Jarno
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
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#ifdef TARGET_WORDS_BIGENDIAN
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#define BIOS_FILENAME "mips_bios.bin" |
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#else
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#define BIOS_FILENAME "mipsel_bios.bin" |
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#endif
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#ifdef TARGET_MIPS64
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#define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffULL) |
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#else
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#define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffU) |
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#endif
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|
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#define ENVP_ADDR (int32_t)0x80002000 |
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#define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000)) |
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|
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#define ENVP_NB_ENTRIES 16 |
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#define ENVP_ENTRY_SIZE 256 |
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|
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extern FILE *logfile;
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|
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typedef struct { |
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uint32_t leds; |
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uint32_t brk; |
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uint32_t gpout; |
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uint32_t i2cin; |
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uint32_t i2coe; |
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uint32_t i2cout; |
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uint32_t i2csel; |
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CharDriverState *display; |
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char display_text[9]; |
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SerialState *uart; |
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} MaltaFPGAState; |
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|
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static PITState *pit;
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|
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static struct _loaderparams { |
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int ram_size;
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const char *kernel_filename; |
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const char *kernel_cmdline; |
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const char *initrd_filename; |
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} loaderparams; |
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|
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/* Malta FPGA */
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static void malta_fpga_update_display(void *opaque) |
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{
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char leds_text[9]; |
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int i;
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MaltaFPGAState *s = opaque; |
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|
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for (i = 7 ; i >= 0 ; i--) { |
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if (s->leds & (1 << i)) |
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leds_text[i] = '#';
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else
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leds_text[i] = ' ';
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} |
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leds_text[8] = '\0'; |
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|
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qemu_chr_printf(s->display, "\e[H\n\n|\e[32m%-8.8s\e[00m|\r\n", leds_text); |
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qemu_chr_printf(s->display, "\n\n\n\n|\e[31m%-8.8s\e[00m|", s->display_text); |
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} |
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|
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/*
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* EEPROM 24C01 / 24C02 emulation.
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*
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* Emulation for serial EEPROMs:
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* 24C01 - 1024 bit (128 x 8)
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* 24C02 - 2048 bit (256 x 8)
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*
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* Typical device names include Microchip 24C02SC or SGS Thomson ST24C02.
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*/
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//~ #define DEBUG
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#if defined(DEBUG)
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# define logout(fmt, args...) fprintf(stderr, "MALTA\t%-24s" fmt, __func__, ##args) |
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#else
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# define logout(fmt, args...) ((void)0) |
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#endif
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struct _eeprom24c0x_t {
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uint8_t tick; |
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uint8_t address; |
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uint8_t command; |
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uint8_t ack; |
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uint8_t scl; |
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uint8_t sda; |
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uint8_t data; |
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//~ uint16_t size;
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uint8_t contents[256];
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}; |
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typedef struct _eeprom24c0x_t eeprom24c0x_t; |
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static eeprom24c0x_t eeprom = {
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contents: {
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/* 00000000: */ 0x80,0x08,0x04,0x0D,0x0A,0x01,0x40,0x00, |
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/* 00000008: */ 0x01,0x75,0x54,0x00,0x82,0x08,0x00,0x01, |
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/* 00000010: */ 0x8F,0x04,0x02,0x01,0x01,0x00,0x0E,0x00, |
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/* 00000018: */ 0x00,0x00,0x00,0x14,0x0F,0x14,0x2D,0x40, |
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/* 00000020: */ 0x15,0x08,0x15,0x08,0x00,0x00,0x00,0x00, |
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/* 00000028: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 128 |
/* 00000030: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000038: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x12,0xD0, |
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/* 00000040: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000048: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000050: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000058: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000060: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000068: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000070: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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/* 00000078: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x64,0xF4, |
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}, |
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}; |
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static uint8_t eeprom24c0x_read()
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{
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logout("%u: scl = %u, sda = %u, data = 0x%02x\n",
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eeprom.tick, eeprom.scl, eeprom.sda, eeprom.data); |
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return eeprom.sda;
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} |
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static void eeprom24c0x_write(int scl, int sda) |
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{
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if (eeprom.scl && scl && (eeprom.sda != sda)) {
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logout("%u: scl = %u->%u, sda = %u->%u i2c %s\n",
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eeprom.tick, eeprom.scl, scl, eeprom.sda, sda, sda ? "stop" : "start"); |
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if (!sda) {
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eeprom.tick = 1;
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eeprom.command = 0;
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} |
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} else if (eeprom.tick == 0 && !eeprom.ack) { |
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/* Waiting for start. */
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logout("%u: scl = %u->%u, sda = %u->%u wait for i2c start\n",
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eeprom.tick, eeprom.scl, scl, eeprom.sda, sda); |
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} else if (!eeprom.scl && scl) { |
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logout("%u: scl = %u->%u, sda = %u->%u trigger bit\n",
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eeprom.tick, eeprom.scl, scl, eeprom.sda, sda); |
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if (eeprom.ack) {
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logout("\ti2c ack bit = 0\n");
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sda = 0;
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eeprom.ack = 0;
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} else if (eeprom.sda == sda) { |
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uint8_t bit = (sda != 0);
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logout("\ti2c bit = %d\n", bit);
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if (eeprom.tick < 9) { |
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eeprom.command <<= 1;
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eeprom.command += bit; |
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eeprom.tick++; |
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if (eeprom.tick == 9) { |
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logout("\tcommand 0x%04x, %s\n", eeprom.command, bit ? "read" : "write"); |
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eeprom.ack = 1;
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} |
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} else if (eeprom.tick < 17) { |
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if (eeprom.command & 1) { |
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sda = ((eeprom.data & 0x80) != 0); |
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} |
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eeprom.address <<= 1;
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eeprom.address += bit; |
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eeprom.tick++; |
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eeprom.data <<= 1;
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if (eeprom.tick == 17) { |
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eeprom.data = eeprom.contents[eeprom.address]; |
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logout("\taddress 0x%04x, data 0x%02x\n", eeprom.address, eeprom.data);
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eeprom.ack = 1;
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eeprom.tick = 0;
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} |
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} else if (eeprom.tick >= 17) { |
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sda = 0;
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} |
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} else {
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logout("\tsda changed with raising scl\n");
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} |
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} else {
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logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom.tick, eeprom.scl, scl, eeprom.sda, sda);
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} |
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eeprom.scl = scl; |
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eeprom.sda = sda; |
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} |
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|
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static uint32_t malta_fpga_readl(void *opaque, target_phys_addr_t addr) |
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{
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MaltaFPGAState *s = opaque; |
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uint32_t val = 0;
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uint32_t saddr; |
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saddr = (addr & 0xfffff);
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switch (saddr) {
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|
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/* SWITCH Register */
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case 0x00200: |
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val = 0x00000000; /* All switches closed */ |
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break;
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|
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/* STATUS Register */
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case 0x00208: |
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#ifdef TARGET_WORDS_BIGENDIAN
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val = 0x00000012;
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#else
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val = 0x00000010;
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#endif
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break;
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|
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/* JMPRS Register */
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case 0x00210: |
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val = 0x00;
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break;
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|
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/* LEDBAR Register */
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case 0x00408: |
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val = s->leds; |
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break;
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|
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/* BRKRES Register */
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case 0x00508: |
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val = s->brk; |
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break;
|
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|
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/* UART Registers are handled directly by the serial device */
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|
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/* GPOUT Register */
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case 0x00a00: |
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val = s->gpout; |
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break;
|
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|
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/* XXX: implement a real I2C controller */
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|
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/* GPINP Register */
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case 0x00a08: |
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/* IN = OUT until a real I2C control is implemented */
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if (s->i2csel)
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val = s->i2cout; |
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else
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val = 0x00;
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break;
|
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|
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/* I2CINP Register */
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case 0x00b00: |
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val = ((s->i2cin & ~1) | eeprom24c0x_read());
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break;
|
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|
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/* I2COE Register */
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case 0x00b08: |
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val = s->i2coe; |
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break;
|
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|
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/* I2COUT Register */
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case 0x00b10: |
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val = s->i2cout; |
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break;
|
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|
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/* I2CSEL Register */
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case 0x00b18: |
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val = s->i2csel; |
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break;
|
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|
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default:
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#if 0
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printf ("malta_fpga_read: Bad register offset 0x" TARGET_FMT_lx "\n",
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addr);
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#endif
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break;
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} |
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return val;
|
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} |
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|
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static void malta_fpga_writel(void *opaque, target_phys_addr_t addr, |
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uint32_t val) |
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{
|
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MaltaFPGAState *s = opaque; |
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uint32_t saddr; |
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|
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saddr = (addr & 0xfffff);
|
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|
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switch (saddr) {
|
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|
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/* SWITCH Register */
|
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case 0x00200: |
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break;
|
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|
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/* JMPRS Register */
|
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case 0x00210: |
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break;
|
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|
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/* LEDBAR Register */
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/* XXX: implement a 8-LED array */
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case 0x00408: |
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s->leds = val & 0xff;
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break;
|
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|
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/* ASCIIWORD Register */
|
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case 0x00410: |
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snprintf(s->display_text, 9, "%08X", val); |
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malta_fpga_update_display(s); |
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break;
|
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|
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/* ASCIIPOS0 to ASCIIPOS7 Registers */
|
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case 0x00418: |
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case 0x00420: |
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case 0x00428: |
| 327 |
case 0x00430: |
| 328 |
case 0x00438: |
| 329 |
case 0x00440: |
| 330 |
case 0x00448: |
| 331 |
case 0x00450: |
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s->display_text[(saddr - 0x00418) >> 3] = (char) val; |
| 333 |
malta_fpga_update_display(s); |
| 334 |
break;
|
| 335 |
|
| 336 |
/* SOFTRES Register */
|
| 337 |
case 0x00500: |
| 338 |
if (val == 0x42) |
| 339 |
qemu_system_reset_request (); |
| 340 |
break;
|
| 341 |
|
| 342 |
/* BRKRES Register */
|
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case 0x00508: |
| 344 |
s->brk = val & 0xff;
|
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break;
|
| 346 |
|
| 347 |
/* UART Registers are handled directly by the serial device */
|
| 348 |
|
| 349 |
/* GPOUT Register */
|
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case 0x00a00: |
| 351 |
s->gpout = val & 0xff;
|
| 352 |
break;
|
| 353 |
|
| 354 |
/* I2COE Register */
|
| 355 |
case 0x00b08: |
| 356 |
s->i2coe = val & 0x03;
|
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break;
|
| 358 |
|
| 359 |
/* I2COUT Register */
|
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case 0x00b10: |
| 361 |
eeprom24c0x_write(val & 0x02, val & 0x01); |
| 362 |
s->i2cout = val; |
| 363 |
break;
|
| 364 |
|
| 365 |
/* I2CSEL Register */
|
| 366 |
case 0x00b18: |
| 367 |
s->i2csel = val & 0x01;
|
| 368 |
break;
|
| 369 |
|
| 370 |
default:
|
| 371 |
#if 0
|
| 372 |
printf ("malta_fpga_write: Bad register offset 0x" TARGET_FMT_lx "\n",
|
| 373 |
addr);
|
| 374 |
#endif
|
| 375 |
break;
|
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
static CPUReadMemoryFunc *malta_fpga_read[] = {
|
| 380 |
malta_fpga_readl, |
| 381 |
malta_fpga_readl, |
| 382 |
malta_fpga_readl |
| 383 |
}; |
| 384 |
|
| 385 |
static CPUWriteMemoryFunc *malta_fpga_write[] = {
|
| 386 |
malta_fpga_writel, |
| 387 |
malta_fpga_writel, |
| 388 |
malta_fpga_writel |
| 389 |
}; |
| 390 |
|
| 391 |
void malta_fpga_reset(void *opaque) |
| 392 |
{
|
| 393 |
MaltaFPGAState *s = opaque; |
| 394 |
|
| 395 |
s->leds = 0x00;
|
| 396 |
s->brk = 0x0a;
|
| 397 |
s->gpout = 0x00;
|
| 398 |
s->i2cin = 0x3;
|
| 399 |
s->i2coe = 0x0;
|
| 400 |
s->i2cout = 0x3;
|
| 401 |
s->i2csel = 0x1;
|
| 402 |
|
| 403 |
s->display_text[8] = '\0'; |
| 404 |
snprintf(s->display_text, 9, " "); |
| 405 |
malta_fpga_update_display(s); |
| 406 |
} |
| 407 |
|
| 408 |
MaltaFPGAState *malta_fpga_init(target_phys_addr_t base, CPUState *env) |
| 409 |
{
|
| 410 |
MaltaFPGAState *s; |
| 411 |
CharDriverState *uart_chr; |
| 412 |
int malta;
|
| 413 |
|
| 414 |
s = (MaltaFPGAState *)qemu_mallocz(sizeof(MaltaFPGAState));
|
| 415 |
|
| 416 |
malta = cpu_register_io_memory(0, malta_fpga_read,
|
| 417 |
malta_fpga_write, s); |
| 418 |
|
| 419 |
cpu_register_physical_memory(base, 0x900, malta);
|
| 420 |
cpu_register_physical_memory(base + 0xa00, 0x100000 - 0xa00, malta); |
| 421 |
|
| 422 |
s->display = qemu_chr_open("vc");
|
| 423 |
qemu_chr_printf(s->display, "\e[HMalta LEDBAR\r\n"); |
| 424 |
qemu_chr_printf(s->display, "+--------+\r\n");
|
| 425 |
qemu_chr_printf(s->display, "+ +\r\n");
|
| 426 |
qemu_chr_printf(s->display, "+--------+\r\n");
|
| 427 |
qemu_chr_printf(s->display, "\n");
|
| 428 |
qemu_chr_printf(s->display, "Malta ASCII\r\n");
|
| 429 |
qemu_chr_printf(s->display, "+--------+\r\n");
|
| 430 |
qemu_chr_printf(s->display, "+ +\r\n");
|
| 431 |
qemu_chr_printf(s->display, "+--------+\r\n");
|
| 432 |
|
| 433 |
uart_chr = qemu_chr_open("vc");
|
| 434 |
qemu_chr_printf(uart_chr, "CBUS UART\r\n");
|
| 435 |
s->uart = serial_mm_init(base + 0x900, 3, env->irq[2], uart_chr, 1); |
| 436 |
|
| 437 |
malta_fpga_reset(s); |
| 438 |
qemu_register_reset(malta_fpga_reset, s); |
| 439 |
|
| 440 |
return s;
|
| 441 |
} |
| 442 |
|
| 443 |
/* Audio support */
|
| 444 |
#ifdef HAS_AUDIO
|
| 445 |
static void audio_init (PCIBus *pci_bus) |
| 446 |
{
|
| 447 |
struct soundhw *c;
|
| 448 |
int audio_enabled = 0; |
| 449 |
|
| 450 |
for (c = soundhw; !audio_enabled && c->name; ++c) {
|
| 451 |
audio_enabled = c->enabled; |
| 452 |
} |
| 453 |
|
| 454 |
if (audio_enabled) {
|
| 455 |
AudioState *s; |
| 456 |
|
| 457 |
s = AUD_init (); |
| 458 |
if (s) {
|
| 459 |
for (c = soundhw; c->name; ++c) {
|
| 460 |
if (c->enabled)
|
| 461 |
c->init.init_pci (pci_bus, s); |
| 462 |
} |
| 463 |
} |
| 464 |
} |
| 465 |
} |
| 466 |
#endif
|
| 467 |
|
| 468 |
/* Network support */
|
| 469 |
static void network_init (PCIBus *pci_bus) |
| 470 |
{
|
| 471 |
int i;
|
| 472 |
NICInfo *nd; |
| 473 |
|
| 474 |
for(i = 0; i < nb_nics; i++) { |
| 475 |
nd = &nd_table[i]; |
| 476 |
if (!nd->model) {
|
| 477 |
nd->model = "pcnet";
|
| 478 |
} |
| 479 |
if (i == 0 && strcmp(nd->model, "pcnet") == 0) { |
| 480 |
/* The malta board has a PCNet card using PCI SLOT 11 */
|
| 481 |
pci_nic_init(pci_bus, nd, 88);
|
| 482 |
} else {
|
| 483 |
pci_nic_init(pci_bus, nd, -1);
|
| 484 |
} |
| 485 |
} |
| 486 |
} |
| 487 |
|
| 488 |
/* ROM and pseudo bootloader
|
| 489 |
|
| 490 |
The following code implements a very very simple bootloader. It first
|
| 491 |
loads the registers a0 to a3 to the values expected by the OS, and
|
| 492 |
then jump at the kernel address.
|
| 493 |
|
| 494 |
The bootloader should pass the locations of the kernel arguments and
|
| 495 |
environment variables tables. Those tables contain the 32-bit address
|
| 496 |
of NULL terminated strings. The environment variables table should be
|
| 497 |
terminated by a NULL address.
|
| 498 |
|
| 499 |
For a simpler implementation, the number of kernel arguments is fixed
|
| 500 |
to two (the name of the kernel and the command line), and the two
|
| 501 |
tables are actually the same one.
|
| 502 |
|
| 503 |
The registers a0 to a3 should contain the following values:
|
| 504 |
a0 - number of kernel arguments
|
| 505 |
a1 - 32-bit address of the kernel arguments table
|
| 506 |
a2 - 32-bit address of the environment variables table
|
| 507 |
a3 - RAM size in bytes
|
| 508 |
*/
|
| 509 |
|
| 510 |
static void write_bootloader (CPUState *env, unsigned long bios_offset, int64_t kernel_entry) |
| 511 |
{
|
| 512 |
uint32_t *p; |
| 513 |
|
| 514 |
/* Small bootloader */
|
| 515 |
p = (uint32_t *) (phys_ram_base + bios_offset); |
| 516 |
stl_raw(p++, 0x0bf00160); /* j 0x1fc00580 */ |
| 517 |
stl_raw(p++, 0x00000000); /* nop */ |
| 518 |
|
| 519 |
/* YAMON service vector */
|
| 520 |
stl_raw(phys_ram_base + bios_offset + 0x500, 0xbfc00580); /* start: */ |
| 521 |
stl_raw(phys_ram_base + bios_offset + 0x504, 0xbfc0083c); /* print_count: */ |
| 522 |
stl_raw(phys_ram_base + bios_offset + 0x520, 0xbfc00580); /* start: */ |
| 523 |
stl_raw(phys_ram_base + bios_offset + 0x52c, 0xbfc00800); /* flush_cache: */ |
| 524 |
stl_raw(phys_ram_base + bios_offset + 0x534, 0xbfc00808); /* print: */ |
| 525 |
stl_raw(phys_ram_base + bios_offset + 0x538, 0xbfc00800); /* reg_cpu_isr: */ |
| 526 |
stl_raw(phys_ram_base + bios_offset + 0x53c, 0xbfc00800); /* unred_cpu_isr: */ |
| 527 |
stl_raw(phys_ram_base + bios_offset + 0x540, 0xbfc00800); /* reg_ic_isr: */ |
| 528 |
stl_raw(phys_ram_base + bios_offset + 0x544, 0xbfc00800); /* unred_ic_isr: */ |
| 529 |
stl_raw(phys_ram_base + bios_offset + 0x548, 0xbfc00800); /* reg_esr: */ |
| 530 |
stl_raw(phys_ram_base + bios_offset + 0x54c, 0xbfc00800); /* unreg_esr: */ |
| 531 |
stl_raw(phys_ram_base + bios_offset + 0x550, 0xbfc00800); /* getchar: */ |
| 532 |
stl_raw(phys_ram_base + bios_offset + 0x554, 0xbfc00800); /* syscon_read: */ |
| 533 |
|
| 534 |
|
| 535 |
/* Second part of the bootloader */
|
| 536 |
p = (uint32_t *) (phys_ram_base + bios_offset + 0x580);
|
| 537 |
stl_raw(p++, 0x24040002); /* addiu a0, zero, 2 */ |
| 538 |
stl_raw(p++, 0x3c1d0000 | (((ENVP_ADDR - 64) >> 16) & 0xffff)); /* lui sp, high(ENVP_ADDR) */ |
| 539 |
stl_raw(p++, 0x37bd0000 | ((ENVP_ADDR - 64) & 0xffff)); /* ori sp, sp, low(ENVP_ADDR) */ |
| 540 |
stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ |
| 541 |
stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a1, low(ENVP_ADDR) */ |
| 542 |
stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ |
| 543 |
stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ |
| 544 |
stl_raw(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(ram_size) */ |
| 545 |
stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(ram_size) */ |
| 546 |
|
| 547 |
/* Load BAR registers as done by YAMON */
|
| 548 |
stl_raw(p++, 0x3c09b400); /* lui t1, 0xb400 */ |
| 549 |
|
| 550 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 551 |
stl_raw(p++, 0x3c08df00); /* lui t0, 0xdf00 */ |
| 552 |
#else
|
| 553 |
stl_raw(p++, 0x340800df); /* ori t0, r0, 0x00df */ |
| 554 |
#endif
|
| 555 |
stl_raw(p++, 0xad280068); /* sw t0, 0x0068(t1) */ |
| 556 |
|
| 557 |
stl_raw(p++, 0x3c09bbe0); /* lui t1, 0xbbe0 */ |
| 558 |
|
| 559 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 560 |
stl_raw(p++, 0x3c08c000); /* lui t0, 0xc000 */ |
| 561 |
#else
|
| 562 |
stl_raw(p++, 0x340800c0); /* ori t0, r0, 0x00c0 */ |
| 563 |
#endif
|
| 564 |
stl_raw(p++, 0xad280048); /* sw t0, 0x0048(t1) */ |
| 565 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 566 |
stl_raw(p++, 0x3c084000); /* lui t0, 0x4000 */ |
| 567 |
#else
|
| 568 |
stl_raw(p++, 0x34080040); /* ori t0, r0, 0x0040 */ |
| 569 |
#endif
|
| 570 |
stl_raw(p++, 0xad280050); /* sw t0, 0x0050(t1) */ |
| 571 |
|
| 572 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 573 |
stl_raw(p++, 0x3c088000); /* lui t0, 0x8000 */ |
| 574 |
#else
|
| 575 |
stl_raw(p++, 0x34080080); /* ori t0, r0, 0x0080 */ |
| 576 |
#endif
|
| 577 |
stl_raw(p++, 0xad280058); /* sw t0, 0x0058(t1) */ |
| 578 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 579 |
stl_raw(p++, 0x3c083f00); /* lui t0, 0x3f00 */ |
| 580 |
#else
|
| 581 |
stl_raw(p++, 0x3408003f); /* ori t0, r0, 0x003f */ |
| 582 |
#endif
|
| 583 |
stl_raw(p++, 0xad280060); /* sw t0, 0x0060(t1) */ |
| 584 |
|
| 585 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 586 |
stl_raw(p++, 0x3c08c100); /* lui t0, 0xc100 */ |
| 587 |
#else
|
| 588 |
stl_raw(p++, 0x340800c1); /* ori t0, r0, 0x00c1 */ |
| 589 |
#endif
|
| 590 |
stl_raw(p++, 0xad280080); /* sw t0, 0x0080(t1) */ |
| 591 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 592 |
stl_raw(p++, 0x3c085e00); /* lui t0, 0x5e00 */ |
| 593 |
#else
|
| 594 |
stl_raw(p++, 0x3408005e); /* ori t0, r0, 0x005e */ |
| 595 |
#endif
|
| 596 |
stl_raw(p++, 0xad280088); /* sw t0, 0x0088(t1) */ |
| 597 |
|
| 598 |
/* Jump to kernel code */
|
| 599 |
stl_raw(p++, 0x3c1f0000 | ((kernel_entry >> 16) & 0xffff)); /* lui ra, high(kernel_entry) */ |
| 600 |
stl_raw(p++, 0x37ff0000 | (kernel_entry & 0xffff)); /* ori ra, ra, low(kernel_entry) */ |
| 601 |
stl_raw(p++, 0x03e00008); /* jr ra */ |
| 602 |
stl_raw(p++, 0x00000000); /* nop */ |
| 603 |
|
| 604 |
/* YAMON subroutines */
|
| 605 |
p = (uint32_t *) (phys_ram_base + bios_offset + 0x800);
|
| 606 |
stl_raw(p++, 0x03e00008); /* jr ra */ |
| 607 |
stl_raw(p++, 0x24020000); /* li v0,0 */ |
| 608 |
/* 808 YAMON print */
|
| 609 |
stl_raw(p++, 0x03e06821); /* move t5,ra */ |
| 610 |
stl_raw(p++, 0x00805821); /* move t3,a0 */ |
| 611 |
stl_raw(p++, 0x00a05021); /* move t2,a1 */ |
| 612 |
stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */ |
| 613 |
stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */ |
| 614 |
stl_raw(p++, 0x10800005); /* beqz a0,834 */ |
| 615 |
stl_raw(p++, 0x00000000); /* nop */ |
| 616 |
stl_raw(p++, 0x0ff0021c); /* jal 870 */ |
| 617 |
stl_raw(p++, 0x00000000); /* nop */ |
| 618 |
stl_raw(p++, 0x08000205); /* j 814 */ |
| 619 |
stl_raw(p++, 0x00000000); /* nop */ |
| 620 |
stl_raw(p++, 0x01a00008); /* jr t5 */ |
| 621 |
stl_raw(p++, 0x01602021); /* move a0,t3 */ |
| 622 |
/* 0x83c YAMON print_count */
|
| 623 |
stl_raw(p++, 0x03e06821); /* move t5,ra */ |
| 624 |
stl_raw(p++, 0x00805821); /* move t3,a0 */ |
| 625 |
stl_raw(p++, 0x00a05021); /* move t2,a1 */ |
| 626 |
stl_raw(p++, 0x00c06021); /* move t4,a2 */ |
| 627 |
stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */ |
| 628 |
stl_raw(p++, 0x0ff0021c); /* jal 870 */ |
| 629 |
stl_raw(p++, 0x00000000); /* nop */ |
| 630 |
stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */ |
| 631 |
stl_raw(p++, 0x258cffff); /* addiu t4,t4,-1 */ |
| 632 |
stl_raw(p++, 0x1580fffa); /* bnez t4,84c */ |
| 633 |
stl_raw(p++, 0x00000000); /* nop */ |
| 634 |
stl_raw(p++, 0x01a00008); /* jr t5 */ |
| 635 |
stl_raw(p++, 0x01602021); /* move a0,t3 */ |
| 636 |
/* 0x870 */
|
| 637 |
stl_raw(p++, 0x3c08b800); /* lui t0,0xb400 */ |
| 638 |
stl_raw(p++, 0x350803f8); /* ori t0,t0,0x3f8 */ |
| 639 |
stl_raw(p++, 0x91090005); /* lbu t1,5(t0) */ |
| 640 |
stl_raw(p++, 0x00000000); /* nop */ |
| 641 |
stl_raw(p++, 0x31290040); /* andi t1,t1,0x40 */ |
| 642 |
stl_raw(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */ |
| 643 |
stl_raw(p++, 0x00000000); /* nop */ |
| 644 |
stl_raw(p++, 0x03e00008); /* jr ra */ |
| 645 |
stl_raw(p++, 0xa1040000); /* sb a0,0(t0) */ |
| 646 |
|
| 647 |
} |
| 648 |
|
| 649 |
static void prom_set(int index, const char *string, ...) |
| 650 |
{
|
| 651 |
va_list ap; |
| 652 |
int32_t *p; |
| 653 |
int32_t table_addr; |
| 654 |
char *s;
|
| 655 |
|
| 656 |
if (index >= ENVP_NB_ENTRIES)
|
| 657 |
return;
|
| 658 |
|
| 659 |
p = (int32_t *) (phys_ram_base + ENVP_ADDR + VIRT_TO_PHYS_ADDEND); |
| 660 |
p += index; |
| 661 |
|
| 662 |
if (string == NULL) { |
| 663 |
stl_raw(p, 0);
|
| 664 |
return;
|
| 665 |
} |
| 666 |
|
| 667 |
table_addr = ENVP_ADDR + sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE;
|
| 668 |
s = (char *) (phys_ram_base + VIRT_TO_PHYS_ADDEND + table_addr);
|
| 669 |
|
| 670 |
stl_raw(p, table_addr); |
| 671 |
|
| 672 |
va_start(ap, string); |
| 673 |
vsnprintf (s, ENVP_ENTRY_SIZE, string, ap); |
| 674 |
va_end(ap); |
| 675 |
} |
| 676 |
|
| 677 |
/* Kernel */
|
| 678 |
static int64_t load_kernel (CPUState *env)
|
| 679 |
{
|
| 680 |
int64_t kernel_entry, kernel_low, kernel_high; |
| 681 |
int index = 0; |
| 682 |
long initrd_size;
|
| 683 |
ram_addr_t initrd_offset; |
| 684 |
|
| 685 |
if (load_elf(loaderparams.kernel_filename, VIRT_TO_PHYS_ADDEND,
|
| 686 |
&kernel_entry, &kernel_low, &kernel_high) < 0) {
|
| 687 |
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
| 688 |
loaderparams.kernel_filename); |
| 689 |
exit(1);
|
| 690 |
} |
| 691 |
|
| 692 |
/* load initrd */
|
| 693 |
initrd_size = 0;
|
| 694 |
initrd_offset = 0;
|
| 695 |
if (loaderparams.initrd_filename) {
|
| 696 |
initrd_size = get_image_size (loaderparams.initrd_filename); |
| 697 |
if (initrd_size > 0) { |
| 698 |
initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK; |
| 699 |
if (initrd_offset + initrd_size > ram_size) {
|
| 700 |
fprintf(stderr, |
| 701 |
"qemu: memory too small for initial ram disk '%s'\n",
|
| 702 |
loaderparams.initrd_filename); |
| 703 |
exit(1);
|
| 704 |
} |
| 705 |
initrd_size = load_image(loaderparams.initrd_filename, |
| 706 |
phys_ram_base + initrd_offset); |
| 707 |
} |
| 708 |
if (initrd_size == (target_ulong) -1) { |
| 709 |
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
| 710 |
loaderparams.initrd_filename); |
| 711 |
exit(1);
|
| 712 |
} |
| 713 |
} |
| 714 |
|
| 715 |
/* Store command line. */
|
| 716 |
prom_set(index++, loaderparams.kernel_filename); |
| 717 |
if (initrd_size > 0) |
| 718 |
prom_set(index++, "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s", |
| 719 |
PHYS_TO_VIRT(initrd_offset), initrd_size, |
| 720 |
loaderparams.kernel_cmdline); |
| 721 |
else
|
| 722 |
prom_set(index++, loaderparams.kernel_cmdline); |
| 723 |
|
| 724 |
/* Setup minimum environment variables */
|
| 725 |
prom_set(index++, "memsize");
|
| 726 |
prom_set(index++, "%i", loaderparams.ram_size);
|
| 727 |
prom_set(index++, "modetty0");
|
| 728 |
prom_set(index++, "38400n8r");
|
| 729 |
prom_set(index++, NULL);
|
| 730 |
|
| 731 |
return kernel_entry;
|
| 732 |
} |
| 733 |
|
| 734 |
static void main_cpu_reset(void *opaque) |
| 735 |
{
|
| 736 |
CPUState *env = opaque; |
| 737 |
cpu_reset(env); |
| 738 |
|
| 739 |
/* The bootload does not need to be rewritten as it is located in a
|
| 740 |
read only location. The kernel location and the arguments table
|
| 741 |
location does not change. */
|
| 742 |
if (loaderparams.kernel_filename) {
|
| 743 |
env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
| 744 |
load_kernel (env); |
| 745 |
} |
| 746 |
} |
| 747 |
|
| 748 |
static
|
| 749 |
void mips_malta_init (int ram_size, int vga_ram_size, const char *boot_device, |
| 750 |
DisplayState *ds, const char **fd_filename, int snapshot, |
| 751 |
const char *kernel_filename, const char *kernel_cmdline, |
| 752 |
const char *initrd_filename, const char *cpu_model) |
| 753 |
{
|
| 754 |
char buf[1024]; |
| 755 |
unsigned long bios_offset; |
| 756 |
int64_t kernel_entry; |
| 757 |
PCIBus *pci_bus; |
| 758 |
CPUState *env; |
| 759 |
RTCState *rtc_state; |
| 760 |
/* fdctrl_t *floppy_controller; */
|
| 761 |
MaltaFPGAState *malta_fpga; |
| 762 |
int ret;
|
| 763 |
qemu_irq *i8259; |
| 764 |
int piix4_devfn;
|
| 765 |
uint8_t *eeprom_buf; |
| 766 |
i2c_bus *smbus; |
| 767 |
int i;
|
| 768 |
|
| 769 |
/* init CPUs */
|
| 770 |
if (cpu_model == NULL) { |
| 771 |
#ifdef TARGET_MIPS64
|
| 772 |
cpu_model = "20Kc";
|
| 773 |
#else
|
| 774 |
cpu_model = "24Kf";
|
| 775 |
#endif
|
| 776 |
} |
| 777 |
env = cpu_init(cpu_model); |
| 778 |
if (!env) {
|
| 779 |
fprintf(stderr, "Unable to find CPU definition\n");
|
| 780 |
exit(1);
|
| 781 |
} |
| 782 |
register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); |
| 783 |
qemu_register_reset(main_cpu_reset, env); |
| 784 |
|
| 785 |
/* allocate RAM */
|
| 786 |
cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
|
| 787 |
|
| 788 |
/* Map the bios at two physical locations, as on the real board */
|
| 789 |
bios_offset = ram_size + vga_ram_size; |
| 790 |
cpu_register_physical_memory(0x1e000000LL,
|
| 791 |
BIOS_SIZE, bios_offset | IO_MEM_ROM); |
| 792 |
cpu_register_physical_memory(0x1fc00000LL,
|
| 793 |
BIOS_SIZE, bios_offset | IO_MEM_ROM); |
| 794 |
|
| 795 |
/* FPGA */
|
| 796 |
malta_fpga = malta_fpga_init(0x1f000000LL, env);
|
| 797 |
|
| 798 |
/* Load a BIOS image unless a kernel image has been specified. */
|
| 799 |
if (!kernel_filename) {
|
| 800 |
if (bios_name == NULL) |
| 801 |
bios_name = BIOS_FILENAME; |
| 802 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name); |
| 803 |
ret = load_image(buf, phys_ram_base + bios_offset); |
| 804 |
if (ret < 0 || ret > BIOS_SIZE) { |
| 805 |
fprintf(stderr, |
| 806 |
"qemu: Could not load MIPS bios '%s', and no -kernel argument was specified\n",
|
| 807 |
buf); |
| 808 |
exit(1);
|
| 809 |
} |
| 810 |
/* In little endian mode the 32bit words in the bios are swapped,
|
| 811 |
a neat trick which allows bi-endian firmware. */
|
| 812 |
#ifndef TARGET_WORDS_BIGENDIAN
|
| 813 |
{
|
| 814 |
uint32_t *addr; |
| 815 |
for (addr = (uint32_t *)(phys_ram_base + bios_offset);
|
| 816 |
addr < (uint32_t *)(phys_ram_base + bios_offset + ret); |
| 817 |
addr++) {
|
| 818 |
*addr = bswap32(*addr); |
| 819 |
} |
| 820 |
} |
| 821 |
#endif
|
| 822 |
} |
| 823 |
|
| 824 |
/* If a kernel image has been specified, write a small bootloader
|
| 825 |
to the flash location. */
|
| 826 |
if (kernel_filename) {
|
| 827 |
loaderparams.ram_size = ram_size; |
| 828 |
loaderparams.kernel_filename = kernel_filename; |
| 829 |
loaderparams.kernel_cmdline = kernel_cmdline; |
| 830 |
loaderparams.initrd_filename = initrd_filename; |
| 831 |
kernel_entry = load_kernel(env); |
| 832 |
env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
| 833 |
write_bootloader(env, bios_offset, kernel_entry); |
| 834 |
} |
| 835 |
|
| 836 |
/* Board ID = 0x420 (Malta Board with CoreLV)
|
| 837 |
XXX: theoretically 0x1e000010 should map to flash and 0x1fc00010 should
|
| 838 |
map to the board ID. */
|
| 839 |
stl_raw(phys_ram_base + bios_offset + 0x10, 0x00000420); |
| 840 |
|
| 841 |
/* Init internal devices */
|
| 842 |
cpu_mips_irq_init_cpu(env); |
| 843 |
cpu_mips_clock_init(env); |
| 844 |
cpu_mips_irqctrl_init(); |
| 845 |
|
| 846 |
/* Interrupt controller */
|
| 847 |
/* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
|
| 848 |
i8259 = i8259_init(env->irq[2]);
|
| 849 |
|
| 850 |
/* Northbridge */
|
| 851 |
pci_bus = pci_gt64120_init(i8259); |
| 852 |
|
| 853 |
/* Southbridge */
|
| 854 |
piix4_devfn = piix4_init(pci_bus, 80);
|
| 855 |
pci_piix4_ide_init(pci_bus, bs_table, piix4_devfn + 1, i8259);
|
| 856 |
usb_uhci_piix4_init(pci_bus, piix4_devfn + 2);
|
| 857 |
smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100); |
| 858 |
eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ |
| 859 |
for (i = 0; i < 8; i++) { |
| 860 |
/* TODO: Populate SPD eeprom data. */
|
| 861 |
smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256)); |
| 862 |
} |
| 863 |
pit = pit_init(0x40, i8259[0]); |
| 864 |
DMA_init(0);
|
| 865 |
|
| 866 |
/* Super I/O */
|
| 867 |
i8042_init(i8259[1], i8259[12], 0x60); |
| 868 |
rtc_state = rtc_init(0x70, i8259[8]); |
| 869 |
if (serial_hds[0]) |
| 870 |
serial_init(0x3f8, i8259[4], serial_hds[0]); |
| 871 |
if (serial_hds[1]) |
| 872 |
serial_init(0x2f8, i8259[3], serial_hds[1]); |
| 873 |
if (parallel_hds[0]) |
| 874 |
parallel_init(0x378, i8259[7], parallel_hds[0]); |
| 875 |
/* XXX: The floppy controller does not work correctly, something is
|
| 876 |
probably wrong.
|
| 877 |
floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd_table); */
|
| 878 |
|
| 879 |
/* Sound card */
|
| 880 |
#ifdef HAS_AUDIO
|
| 881 |
audio_init(pci_bus); |
| 882 |
#endif
|
| 883 |
|
| 884 |
/* Network card */
|
| 885 |
network_init(pci_bus); |
| 886 |
|
| 887 |
/* Optional PCI video card */
|
| 888 |
pci_cirrus_vga_init(pci_bus, ds, phys_ram_base + ram_size, |
| 889 |
ram_size, vga_ram_size); |
| 890 |
} |
| 891 |
|
| 892 |
QEMUMachine mips_malta_machine = {
|
| 893 |
"malta",
|
| 894 |
"MIPS Malta Core LV",
|
| 895 |
mips_malta_init, |
| 896 |
}; |