 af655b6d82
			
		
	
	
		af655b6d82
		
	
	
	
	
		
			
			git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2590 c046a42c-6fe2-441c-8c8c-71466251a162
		
			
				
	
	
		
			780 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			780 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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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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| 
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| #include "vl.h"
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| 
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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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| 
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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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| 
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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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| /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
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| static void pic_irq_request(void *opaque, int level)
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| {
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|     cpu_mips_irq_request(opaque, 2, level);
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| }
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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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| 
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| //~ #define DEBUG
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| 
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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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| 
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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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| 
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| typedef struct _eeprom24c0x_t eeprom24c0x_t;
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| 
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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,
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|         /* 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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| 
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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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| 
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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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| 
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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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|         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 */
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|     case 0x00900:
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|     case 0x00908:
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|     case 0x00910:
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|     case 0x00918:
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|     case 0x00920:
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|     case 0x00928:
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|     case 0x00930:
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|     case 0x00938:
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|         val = serial_mm_readb(s->uart, addr);
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|         break;
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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:
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|     case 0x00430:
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|     case 0x00438:
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|     case 0x00440:
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|     case 0x00448:
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|     case 0x00450:
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|         s->display_text[(saddr - 0x00418) >> 3] = (char) val;
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|         malta_fpga_update_display(s);
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|         break;
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| 
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|     /* SOFTRES Register */
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|     case 0x00500:
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|         if (val == 0x42)
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|             qemu_system_reset_request ();
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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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|         s->brk = val & 0xff;
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|         break;
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| 
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|     /* UART Registers */
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|     case 0x00900:
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|     case 0x00908:
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|     case 0x00910:
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|     case 0x00918:
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|     case 0x00920:
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|     case 0x00928:
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|     case 0x00930:
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|     case 0x00938:
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|         serial_mm_writeb(s->uart, addr, val);
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|         break;
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| 
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|     /* GPOUT Register */
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|     case 0x00a00:
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|         s->gpout = val & 0xff;
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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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|         s->i2coe = val & 0x03;
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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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|         eeprom24c0x_write(val & 0x02, val & 0x01);
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|         s->i2cout = val;
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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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|         s->i2csel = val & 0x01;
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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_write: 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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| }
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| 
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| static CPUReadMemoryFunc *malta_fpga_read[] = {
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|    malta_fpga_readl,
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|    malta_fpga_readl,
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|    malta_fpga_readl
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| };
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| 
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| static CPUWriteMemoryFunc *malta_fpga_write[] = {
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|    malta_fpga_writel,
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|    malta_fpga_writel,
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|    malta_fpga_writel
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| };
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| 
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| void malta_fpga_reset(void *opaque)
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| {
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|     MaltaFPGAState *s = opaque;
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| 
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|     s->leds   = 0x00;
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|     s->brk    = 0x0a;
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|     s->gpout  = 0x00;
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|     s->i2cin  = 0x3;
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|     s->i2coe  = 0x0;
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|     s->i2cout = 0x3;
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|     s->i2csel = 0x1;
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| 
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|     s->display_text[8] = '\0';
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|     snprintf(s->display_text, 9, "        ");
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|     malta_fpga_update_display(s);
 | |
| }
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| 
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| MaltaFPGAState *malta_fpga_init(target_phys_addr_t base, CPUState *env)
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| {
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|     MaltaFPGAState *s;
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|     CharDriverState *uart_chr;
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|     int malta;
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| 
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|     s = (MaltaFPGAState *)qemu_mallocz(sizeof(MaltaFPGAState));
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| 
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|     malta = cpu_register_io_memory(0, malta_fpga_read,
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|                                    malta_fpga_write, s);
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| 
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|     cpu_register_physical_memory(base, 0x100000, malta);
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| 
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|     s->display = qemu_chr_open("vc");
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|     qemu_chr_printf(s->display, "\e[HMalta LEDBAR\r\n");
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|     qemu_chr_printf(s->display, "+--------+\r\n");
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|     qemu_chr_printf(s->display, "+        +\r\n");
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|     qemu_chr_printf(s->display, "+--------+\r\n");
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|     qemu_chr_printf(s->display, "\n");
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|     qemu_chr_printf(s->display, "Malta ASCII\r\n");
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|     qemu_chr_printf(s->display, "+--------+\r\n");
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|     qemu_chr_printf(s->display, "+        +\r\n");
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|     qemu_chr_printf(s->display, "+--------+\r\n");
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| 
 | |
|     uart_chr = qemu_chr_open("vc");
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|     qemu_chr_printf(uart_chr, "CBUS UART\r\n");
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|     s->uart = serial_mm_init(&cpu_mips_irq_request, env, base, 3, 2,
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|                              uart_chr, 0);
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| 
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|     malta_fpga_reset(s);
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|     qemu_register_reset(malta_fpga_reset, s);
 | |
| 
 | |
|     return s;
 | |
| }
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| 
 | |
| /* Audio support */
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| #ifdef HAS_AUDIO
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| static void audio_init (PCIBus *pci_bus)
 | |
| {
 | |
|     struct soundhw *c;
 | |
|     int audio_enabled = 0;
 | |
| 
 | |
|     for (c = soundhw; !audio_enabled && c->name; ++c) {
 | |
|         audio_enabled = c->enabled;
 | |
|     }
 | |
| 
 | |
|     if (audio_enabled) {
 | |
|         AudioState *s;
 | |
| 
 | |
|         s = AUD_init ();
 | |
|         if (s) {
 | |
|             for (c = soundhw; c->name; ++c) {
 | |
|                 if (c->enabled) {
 | |
|                     if (c->isa) {
 | |
|                         fprintf(stderr, "qemu: Unsupported Sound Card: %s\n", c->name);
 | |
|                         exit(1);
 | |
|                     }
 | |
|                     else {
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|                         if (pci_bus) {
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|                             c->init.init_pci (pci_bus, s);
 | |
|                         }
 | |
|                     }
 | |
|                 }
 | |
|             }
 | |
|         }
 | |
|     }
 | |
| }
 | |
| #endif
 | |
| 
 | |
| /* Network support */
 | |
| static void network_init (PCIBus *pci_bus)
 | |
| {
 | |
|     int i;
 | |
|     NICInfo *nd;
 | |
| 
 | |
|     for(i = 0; i < nb_nics; i++) {
 | |
|         nd = &nd_table[i];
 | |
|         if (!nd->model) {
 | |
|             nd->model = "pcnet";
 | |
|         }
 | |
|         if (i == 0  && strcmp(nd->model, "pcnet") == 0) {
 | |
|             /* The malta board has a PCNet card using PCI SLOT 11 */
 | |
|             pci_nic_init(pci_bus, nd, 88);
 | |
|         } else {
 | |
|             pci_nic_init(pci_bus, nd, -1);
 | |
|         }
 | |
|     }
 | |
| }
 | |
| 
 | |
| /* ROM and pseudo bootloader
 | |
| 
 | |
|    The following code implements a very very simple bootloader. It first
 | |
|    loads the registers a0 to a3 to the values expected by the OS, and
 | |
|    then jump at the kernel address.
 | |
| 
 | |
|    The bootloader should pass the locations of the kernel arguments and
 | |
|    environment variables tables. Those tables contain the 32-bit address
 | |
|    of NULL terminated strings. The environment variables table should be
 | |
|    terminated by a NULL address.
 | |
| 
 | |
|    For a simpler implementation, the number of kernel arguments is fixed
 | |
|    to two (the name of the kernel and the command line), and the two
 | |
|    tables are actually the same one.
 | |
| 
 | |
|    The registers a0 to a3 should contain the following values:
 | |
|      a0 - number of kernel arguments
 | |
|      a1 - 32-bit address of the kernel arguments table
 | |
|      a2 - 32-bit address of the environment variables table
 | |
|      a3 - RAM size in bytes
 | |
| */
 | |
| 
 | |
| static void write_bootloader (CPUState *env, unsigned long bios_offset, int64_t kernel_entry)
 | |
| {
 | |
|     uint32_t *p;
 | |
| 
 | |
|     /* Small bootloader */
 | |
|     p = (uint32_t *) (phys_ram_base + bios_offset);
 | |
|     stl_raw(p++, 0x0bf00010);                                      /* j 0x1fc00040 */
 | |
|     stl_raw(p++, 0x00000000);                                      /* nop */
 | |
| 
 | |
|     /* Second part of the bootloader */
 | |
|     p = (uint32_t *) (phys_ram_base + bios_offset + 0x040);
 | |
|     stl_raw(p++, 0x3c040000);                                      /* lui a0, 0 */
 | |
|     stl_raw(p++, 0x34840002);                                      /* ori a0, a0, 2 */
 | |
|     stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff));       /* lui a1, high(ENVP_ADDR) */
 | |
|     stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff));               /* ori a1, a0, low(ENVP_ADDR) */
 | |
|     stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */
 | |
|     stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff));         /* ori a2, a2, low(ENVP_ADDR + 8) */
 | |
|     stl_raw(p++, 0x3c070000 | (env->ram_size >> 16));              /* lui a3, high(env->ram_size) */
 | |
|     stl_raw(p++, 0x34e70000 | (env->ram_size & 0xffff));           /* ori a3, a3, low(env->ram_size) */
 | |
|     stl_raw(p++, 0x3c1f0000 | ((kernel_entry >> 16) & 0xffff));    /* lui ra, high(kernel_entry) */
 | |
|     stl_raw(p++, 0x37ff0000 | (kernel_entry & 0xffff));            /* ori ra, ra, low(kernel_entry) */
 | |
|     stl_raw(p++, 0x03e00008);                                      /* jr ra */
 | |
|     stl_raw(p++, 0x00000000);                                      /* nop */
 | |
| }
 | |
| 
 | |
| static void prom_set(int index, const char *string, ...)
 | |
| {
 | |
|     va_list ap;
 | |
|     int32_t *p;
 | |
|     int32_t table_addr;
 | |
|     char *s;
 | |
| 
 | |
|     if (index >= ENVP_NB_ENTRIES)
 | |
|         return;
 | |
| 
 | |
|     p = (int32_t *) (phys_ram_base + ENVP_ADDR + VIRT_TO_PHYS_ADDEND);
 | |
|     p += index;
 | |
| 
 | |
|     if (string == NULL) {
 | |
|         stl_raw(p, 0);
 | |
|         return;
 | |
|     }
 | |
| 
 | |
|     table_addr = ENVP_ADDR + sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE;
 | |
|     s = (char *) (phys_ram_base + VIRT_TO_PHYS_ADDEND + table_addr);
 | |
| 
 | |
|     stl_raw(p, table_addr);
 | |
| 
 | |
|     va_start(ap, string);
 | |
|     vsnprintf (s, ENVP_ENTRY_SIZE, string, ap);
 | |
|     va_end(ap);
 | |
| }
 | |
| 
 | |
| /* Kernel */
 | |
| static int64_t load_kernel (CPUState *env)
 | |
| {
 | |
|     int64_t kernel_entry, kernel_low, kernel_high;
 | |
|     int index = 0;
 | |
|     long initrd_size;
 | |
|     ram_addr_t initrd_offset;
 | |
| 
 | |
|     if (load_elf(env->kernel_filename, VIRT_TO_PHYS_ADDEND,
 | |
|                  &kernel_entry, &kernel_low, &kernel_high) < 0) {
 | |
|         fprintf(stderr, "qemu: could not load kernel '%s'\n",
 | |
|                 env->kernel_filename);
 | |
|       exit(1);
 | |
|     }
 | |
| 
 | |
|     /* load initrd */
 | |
|     initrd_size = 0;
 | |
|     initrd_offset = 0;
 | |
|     if (env->initrd_filename) {
 | |
|         initrd_size = get_image_size (env->initrd_filename);
 | |
|         if (initrd_size > 0) {
 | |
|             initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK;
 | |
|             if (initrd_offset + initrd_size > env->ram_size) {
 | |
|                 fprintf(stderr,
 | |
|                         "qemu: memory too small for initial ram disk '%s'\n",
 | |
|                         env->initrd_filename);
 | |
|                 exit(1);
 | |
|             }
 | |
|             initrd_size = load_image(env->initrd_filename,
 | |
|                                      phys_ram_base + initrd_offset);
 | |
|         }
 | |
|         if (initrd_size == (target_ulong) -1) {
 | |
|             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 | |
|                     env->initrd_filename);
 | |
|             exit(1);
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     /* Store command line.  */
 | |
|     prom_set(index++, env->kernel_filename);
 | |
|     if (initrd_size > 0)
 | |
|         prom_set(index++, "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s",
 | |
|                  PHYS_TO_VIRT(initrd_offset), initrd_size,
 | |
|                  env->kernel_cmdline);
 | |
|     else
 | |
|         prom_set(index++, env->kernel_cmdline);
 | |
| 
 | |
|     /* Setup minimum environment variables */
 | |
|     prom_set(index++, "memsize");
 | |
|     prom_set(index++, "%i", env->ram_size);
 | |
|     prom_set(index++, "modetty0");
 | |
|     prom_set(index++, "38400n8r");
 | |
|     prom_set(index++, NULL);
 | |
| 
 | |
|     return kernel_entry;
 | |
| }
 | |
| 
 | |
| static void main_cpu_reset(void *opaque)
 | |
| {
 | |
|     CPUState *env = opaque;
 | |
|     cpu_reset(env);
 | |
| 
 | |
|     /* The bootload does not need to be rewritten as it is located in a
 | |
|        read only location. The kernel location and the arguments table
 | |
|        location does not change. */
 | |
|     if (env->kernel_filename)
 | |
|         load_kernel (env);
 | |
| }
 | |
| 
 | |
| static
 | |
| void mips_malta_init (int ram_size, int vga_ram_size, int boot_device,
 | |
|                       DisplayState *ds, const char **fd_filename, int snapshot,
 | |
|                       const char *kernel_filename, const char *kernel_cmdline,
 | |
|                       const char *initrd_filename, const char *cpu_model)
 | |
| {
 | |
|     char buf[1024];
 | |
|     unsigned long bios_offset;
 | |
|     int64_t kernel_entry;
 | |
|     PCIBus *pci_bus;
 | |
|     CPUState *env;
 | |
|     RTCState *rtc_state;
 | |
|     /* fdctrl_t *floppy_controller; */
 | |
|     MaltaFPGAState *malta_fpga;
 | |
|     int ret;
 | |
|     mips_def_t *def;
 | |
| 
 | |
|     /* init CPUs */
 | |
|     if (cpu_model == NULL) {
 | |
| #ifdef TARGET_MIPS64
 | |
|         cpu_model = "R4000";
 | |
| #else
 | |
|         cpu_model = "4KEc";
 | |
| #endif
 | |
|     }
 | |
|     if (mips_find_by_name(cpu_model, &def) != 0)
 | |
|         def = NULL;
 | |
|     env = cpu_init();
 | |
|     cpu_mips_register(env, def);
 | |
|     register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
 | |
|     qemu_register_reset(main_cpu_reset, env);
 | |
| 
 | |
|     /* allocate RAM */
 | |
|     cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
 | |
| 
 | |
|     /* Map the bios at two physical locations, as on the real board */
 | |
|     bios_offset = ram_size + vga_ram_size;
 | |
|     cpu_register_physical_memory(0x1e000000LL,
 | |
|                                  BIOS_SIZE, bios_offset | IO_MEM_ROM);
 | |
|     cpu_register_physical_memory(0x1fc00000LL,
 | |
|                                  BIOS_SIZE, bios_offset | IO_MEM_ROM);
 | |
| 
 | |
|     /* Load a BIOS image except if a kernel image has been specified. In
 | |
|        the later case, just write a small bootloader to the flash
 | |
|        location. */
 | |
|     if (kernel_filename) {
 | |
|         env->ram_size = ram_size;
 | |
|         env->kernel_filename = kernel_filename;
 | |
|         env->kernel_cmdline = kernel_cmdline;
 | |
|         env->initrd_filename = initrd_filename;
 | |
|         kernel_entry = load_kernel(env);
 | |
|         write_bootloader(env, bios_offset, kernel_entry);
 | |
|     } else {
 | |
|         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
 | |
|         ret = load_image(buf, phys_ram_base + bios_offset);
 | |
|         if (ret < 0 || ret > BIOS_SIZE) {
 | |
|             fprintf(stderr, "qemu: Warning, could not load MIPS bios '%s'\n",
 | |
|                     buf);
 | |
|             exit(1);
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     /* Board ID = 0x420 (Malta Board with CoreLV)
 | |
|        XXX: theoretically 0x1e000010 should map to flash and 0x1fc00010 should
 | |
|        map to the board ID. */
 | |
|     stl_raw(phys_ram_base + bios_offset + 0x10, 0x00000420);
 | |
| 
 | |
|     /* Init internal devices */
 | |
|     cpu_mips_clock_init(env);
 | |
|     cpu_mips_irqctrl_init();
 | |
| 
 | |
|     /* FPGA */
 | |
|     malta_fpga = malta_fpga_init(0x1f000000LL, env);
 | |
| 
 | |
|     /* Interrupt controller */
 | |
|     isa_pic = pic_init(pic_irq_request, env);
 | |
| 
 | |
|     /* Northbridge */
 | |
|     pci_bus = pci_gt64120_init(isa_pic);
 | |
| 
 | |
|     /* Southbridge */
 | |
|     piix4_init(pci_bus, 80);
 | |
|     pci_piix3_ide_init(pci_bus, bs_table, 81);
 | |
|     usb_uhci_init(pci_bus, 82);
 | |
|     piix4_pm_init(pci_bus, 83);
 | |
|     pit = pit_init(0x40, 0);
 | |
|     DMA_init(0);
 | |
| 
 | |
|     /* Super I/O */
 | |
|     kbd_init();
 | |
|     rtc_state = rtc_init(0x70, 8);
 | |
|     if (serial_hds[0])
 | |
|         serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
 | |
|     if (serial_hds[1])
 | |
|         serial_init(&pic_set_irq_new, isa_pic, 0x2f8, 3, serial_hds[1]);
 | |
|     if (parallel_hds[0])
 | |
|         parallel_init(0x378, 7, parallel_hds[0]);
 | |
|     /* XXX: The floppy controller does not work correctly, something is
 | |
|        probably wrong.
 | |
|     floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table); */
 | |
| 
 | |
|     /* Sound card */
 | |
| #ifdef HAS_AUDIO
 | |
|     audio_init(pci_bus);
 | |
| #endif
 | |
| 
 | |
|     /* Network card */
 | |
|     network_init(pci_bus);
 | |
| 
 | |
|     /* Optional PCI video card */
 | |
|     pci_cirrus_vga_init(pci_bus, ds, phys_ram_base + ram_size,
 | |
|                         ram_size, vga_ram_size);
 | |
| }
 | |
| 
 | |
| QEMUMachine mips_malta_machine = {
 | |
|     "malta",
 | |
|     "MIPS Malta Core LV",
 | |
|     mips_malta_init,
 | |
| };
 |