root / hw / mips_fulong2e.c @ 1de7afc9
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/*
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* QEMU fulong 2e mini pc support
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*
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* Copyright (c) 2008 yajin (yajin@vm-kernel.org)
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* Copyright (c) 2009 chenming (chenming@rdc.faw.com.cn)
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* Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com)
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* This code is licensed under the GNU GPL v2.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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/*
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* Fulong 2e mini pc is based on ICT/ST Loongson 2e CPU (MIPS III like, 800MHz)
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* http://www.linux-mips.org/wiki/Fulong
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*
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* Loongson 2e user manual:
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* http://www.loongsondeveloper.com/doc/Loongson2EUserGuide.pdf
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*/
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#include "hw.h" |
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#include "pc.h" |
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#include "serial.h" |
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#include "fdc.h" |
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#include "net/net.h" |
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#include "boards.h" |
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#include "smbus.h" |
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#include "block/block.h" |
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#include "flash.h" |
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#include "mips.h" |
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#include "mips_cpudevs.h" |
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#include "pci/pci.h" |
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#include "qemu-char.h" |
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#include "sysemu.h" |
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#include "audio/audio.h" |
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#include "qemu/log.h" |
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#include "loader.h" |
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#include "mips-bios.h" |
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#include "ide.h" |
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#include "elf.h" |
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#include "vt82c686.h" |
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#include "mc146818rtc.h" |
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#include "i8254.h" |
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#include "blockdev.h" |
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#include "exec/address-spaces.h" |
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#define DEBUG_FULONG2E_INIT
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#define ENVP_ADDR 0x80002000l |
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#define ENVP_NB_ENTRIES 16 |
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#define ENVP_ENTRY_SIZE 256 |
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#define MAX_IDE_BUS 2 |
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/*
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* PMON is not part of qemu and released with BSD license, anyone
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* who want to build a pmon binary please first git-clone the source
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* from the git repository at:
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* http://www.loongson.cn/support/git/pmon
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* Then follow the "Compile Guide" available at:
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* http://dev.lemote.com/code/pmon
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*
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* Notes:
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* 1, don't use the source at http://dev.lemote.com/http_git/pmon.git
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* 2, use "Bonito2edev" to replace "dir_corresponding_to_your_target_hardware"
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* in the "Compile Guide".
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*/
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#define FULONG_BIOSNAME "pmon_fulong2e.bin" |
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/* PCI SLOT in fulong 2e */
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#define FULONG2E_VIA_SLOT 5 |
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#define FULONG2E_ATI_SLOT 6 |
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#define FULONG2E_RTL8139_SLOT 7 |
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static ISADevice *pit;
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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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static void GCC_FMT_ATTR(3, 4) prom_set(uint32_t* prom_buf, int index, |
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const char *string, ...) |
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{ |
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va_list ap; |
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int32_t table_addr; |
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if (index >= ENVP_NB_ENTRIES)
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return;
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if (string == NULL) { |
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prom_buf[index] = 0;
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return;
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} |
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table_addr = sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE;
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prom_buf[index] = tswap32(ENVP_ADDR + table_addr); |
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va_start(ap, string); |
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vsnprintf((char *)prom_buf + table_addr, ENVP_ENTRY_SIZE, string, ap);
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va_end(ap); |
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} |
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static int64_t load_kernel (CPUMIPSState *env)
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{ |
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int64_t kernel_entry, kernel_low, kernel_high; |
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int index = 0; |
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long initrd_size;
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ram_addr_t initrd_offset; |
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uint32_t *prom_buf; |
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long prom_size;
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if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL, |
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(uint64_t *)&kernel_entry, (uint64_t *)&kernel_low, |
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(uint64_t *)&kernel_high, 0, ELF_MACHINE, 1) < 0) { |
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fprintf(stderr, "qemu: could not load kernel '%s'\n",
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loaderparams.kernel_filename); |
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exit(1);
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} |
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/* load initrd */
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initrd_size = 0;
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initrd_offset = 0;
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if (loaderparams.initrd_filename) {
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initrd_size = get_image_size (loaderparams.initrd_filename); |
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if (initrd_size > 0) { |
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initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK; |
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if (initrd_offset + initrd_size > ram_size) {
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fprintf(stderr, |
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"qemu: memory too small for initial ram disk '%s'\n",
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loaderparams.initrd_filename); |
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exit(1);
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} |
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initrd_size = load_image_targphys(loaderparams.initrd_filename, |
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initrd_offset, ram_size - initrd_offset); |
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} |
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if (initrd_size == (target_ulong) -1) { |
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fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
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loaderparams.initrd_filename); |
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exit(1);
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} |
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} |
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/* Setup prom parameters. */
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prom_size = ENVP_NB_ENTRIES * (sizeof(int32_t) + ENVP_ENTRY_SIZE);
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prom_buf = g_malloc(prom_size); |
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prom_set(prom_buf, index++, "%s", loaderparams.kernel_filename);
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if (initrd_size > 0) { |
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prom_set(prom_buf, index++, "rd_start=0x%" PRIx64 " rd_size=%li %s", |
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cpu_mips_phys_to_kseg0(NULL, initrd_offset), initrd_size,
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loaderparams.kernel_cmdline); |
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} else {
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prom_set(prom_buf, index++, "%s", loaderparams.kernel_cmdline);
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} |
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/* Setup minimum environment variables */
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prom_set(prom_buf, index++, "busclock=33000000");
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prom_set(prom_buf, index++, "cpuclock=100000000");
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prom_set(prom_buf, index++, "memsize=%i", loaderparams.ram_size/1024/1024); |
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prom_set(prom_buf, index++, "modetty0=38400n8r");
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prom_set(prom_buf, index++, NULL);
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rom_add_blob_fixed("prom", prom_buf, prom_size,
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cpu_mips_kseg0_to_phys(NULL, ENVP_ADDR));
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return kernel_entry;
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} |
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static void write_bootloader (CPUMIPSState *env, uint8_t *base, int64_t kernel_addr) |
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{ |
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uint32_t *p; |
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/* Small bootloader */
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p = (uint32_t *) base; |
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stl_raw(p++, 0x0bf00010); /* j 0x1fc00040 */ |
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stl_raw(p++, 0x00000000); /* nop */ |
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/* Second part of the bootloader */
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p = (uint32_t *) (base + 0x040);
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stl_raw(p++, 0x3c040000); /* lui a0, 0 */ |
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stl_raw(p++, 0x34840002); /* ori a0, a0, 2 */ |
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stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ |
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stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a0, low(ENVP_ADDR) */ |
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stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ |
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stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ |
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stl_raw(p++, 0x3c070000 | (loaderparams.ram_size >> 16)); /* lui a3, high(env->ram_size) */ |
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stl_raw(p++, 0x34e70000 | (loaderparams.ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */ |
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stl_raw(p++, 0x3c1f0000 | ((kernel_addr >> 16) & 0xffff)); /* lui ra, high(kernel_addr) */; |
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stl_raw(p++, 0x37ff0000 | (kernel_addr & 0xffff)); /* ori ra, ra, low(kernel_addr) */ |
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stl_raw(p++, 0x03e00008); /* jr ra */ |
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stl_raw(p++, 0x00000000); /* nop */ |
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} |
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static void main_cpu_reset(void *opaque) |
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{ |
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MIPSCPU *cpu = opaque; |
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CPUMIPSState *env = &cpu->env; |
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cpu_reset(CPU(cpu)); |
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/* TODO: 2E reset stuff */
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if (loaderparams.kernel_filename) {
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env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
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} |
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} |
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uint8_t eeprom_spd[0x80] = {
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0x80,0x08,0x07,0x0d,0x09,0x02,0x40,0x00,0x04,0x70, |
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0x70,0x00,0x82,0x10,0x00,0x01,0x0e,0x04,0x0c,0x01, |
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0x02,0x20,0x80,0x75,0x70,0x00,0x00,0x50,0x3c,0x50, |
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0x2d,0x20,0xb0,0xb0,0x50,0x50,0x00,0x00,0x00,0x00, |
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0x00,0x41,0x48,0x3c,0x32,0x75,0x00,0x00,0x00,0x00, |
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
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0x00,0x00,0x00,0x9c,0x7b,0x07,0x00,0x00,0x00,0x00, |
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0x00,0x00,0x00,0x00,0x48,0x42,0x35,0x34,0x41,0x32, |
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0x35,0x36,0x38,0x4b,0x4e,0x2d,0x41,0x37,0x35,0x42, |
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0x20,0x30,0x20 |
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}; |
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/* Audio support */
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static void audio_init (PCIBus *pci_bus) |
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{ |
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vt82c686b_ac97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 5));
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vt82c686b_mc97_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 6));
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} |
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/* Network support */
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static void network_init (void) |
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{ |
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int i;
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for(i = 0; i < nb_nics; i++) { |
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NICInfo *nd = &nd_table[i]; |
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const char *default_devaddr = NULL; |
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if (i == 0 && (!nd->model || strcmp(nd->model, "rtl8139") == 0)) { |
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/* The fulong board has a RTL8139 card using PCI SLOT 7 */
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default_devaddr = "07";
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} |
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pci_nic_init_nofail(nd, "rtl8139", default_devaddr);
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} |
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} |
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static void cpu_request_exit(void *opaque, int irq, int level) |
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{ |
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CPUMIPSState *env = cpu_single_env; |
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if (env && level) {
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cpu_exit(env); |
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} |
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} |
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static void mips_fulong2e_init(QEMUMachineInitArgs *args) |
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{ |
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ram_addr_t ram_size = args->ram_size; |
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const char *cpu_model = args->cpu_model; |
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const char *kernel_filename = args->kernel_filename; |
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const char *kernel_cmdline = args->kernel_cmdline; |
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const char *initrd_filename = args->initrd_filename; |
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char *filename;
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MemoryRegion *address_space_mem = get_system_memory(); |
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MemoryRegion *ram = g_new(MemoryRegion, 1);
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MemoryRegion *bios = g_new(MemoryRegion, 1);
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long bios_size;
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int64_t kernel_entry; |
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qemu_irq *i8259; |
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qemu_irq *cpu_exit_irq; |
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PCIBus *pci_bus; |
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ISABus *isa_bus; |
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i2c_bus *smbus; |
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int i;
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DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
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MIPSCPU *cpu; |
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CPUMIPSState *env; |
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/* init CPUs */
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if (cpu_model == NULL) { |
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cpu_model = "Loongson-2E";
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} |
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cpu = cpu_mips_init(cpu_model); |
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if (cpu == NULL) { |
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fprintf(stderr, "Unable to find CPU definition\n");
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exit(1);
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} |
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env = &cpu->env; |
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qemu_register_reset(main_cpu_reset, cpu); |
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/* fulong 2e has 256M ram. */
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ram_size = 256 * 1024 * 1024; |
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/* fulong 2e has a 1M flash.Winbond W39L040AP70Z */
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bios_size = 1024 * 1024; |
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/* allocate RAM */
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memory_region_init_ram(ram, "fulong2e.ram", ram_size);
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vmstate_register_ram_global(ram); |
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memory_region_init_ram(bios, "fulong2e.bios", bios_size);
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vmstate_register_ram_global(bios); |
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memory_region_set_readonly(bios, true);
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memory_region_add_subregion(address_space_mem, 0, ram);
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memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios);
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/* We do not support flash operation, just loading pmon.bin as raw BIOS.
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* Please use -L to set the BIOS path and -bios to set bios name. */
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if (kernel_filename) {
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loaderparams.ram_size = ram_size; |
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loaderparams.kernel_filename = kernel_filename; |
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loaderparams.kernel_cmdline = kernel_cmdline; |
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loaderparams.initrd_filename = initrd_filename; |
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kernel_entry = load_kernel (env); |
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write_bootloader(env, memory_region_get_ram_ptr(bios), kernel_entry); |
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} else {
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if (bios_name == NULL) { |
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bios_name = FULONG_BIOSNAME; |
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} |
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filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
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if (filename) {
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bios_size = load_image_targphys(filename, 0x1fc00000LL,
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BIOS_SIZE); |
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g_free(filename); |
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} else {
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bios_size = -1;
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} |
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if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) { |
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fprintf(stderr, "qemu: Could not load MIPS bios '%s'\n", bios_name);
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exit(1);
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} |
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} |
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/* Init internal devices */
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cpu_mips_irq_init_cpu(env); |
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cpu_mips_clock_init(env); |
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/* North bridge, Bonito --> IP2 */
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pci_bus = bonito_init((qemu_irq *)&(env->irq[2]));
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/* South bridge */
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ide_drive_get(hd, MAX_IDE_BUS); |
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isa_bus = vt82c686b_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 0));
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if (!isa_bus) {
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fprintf(stderr, "vt82c686b_init error\n");
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exit(1);
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} |
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/* Interrupt controller */
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/* The 8259 -> IP5 */
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i8259 = i8259_init(isa_bus, env->irq[5]);
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isa_bus_irqs(isa_bus, i8259); |
361 |
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vt82c686b_ide_init(pci_bus, hd, PCI_DEVFN(FULONG2E_VIA_SLOT, 1));
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pci_create_simple(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 2),
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"vt82c686b-usb-uhci");
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pci_create_simple(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 3),
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"vt82c686b-usb-uhci");
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smbus = vt82c686b_pm_init(pci_bus, PCI_DEVFN(FULONG2E_VIA_SLOT, 4),
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0xeee1, NULL); |
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/* TODO: Populate SPD eeprom data. */
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smbus_eeprom_init(smbus, 1, eeprom_spd, sizeof(eeprom_spd)); |
372 |
|
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/* init other devices */
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pit = pit_init(isa_bus, 0x40, 0, NULL); |
375 |
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); |
376 |
DMA_init(0, cpu_exit_irq);
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|
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/* Super I/O */
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isa_create_simple(isa_bus, "i8042");
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380 |
|
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rtc_init(isa_bus, 2000, NULL); |
382 |
|
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for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
384 |
if (serial_hds[i]) {
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serial_isa_init(isa_bus, i, serial_hds[i]); |
386 |
} |
387 |
} |
388 |
|
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if (parallel_hds[0]) { |
390 |
parallel_init(isa_bus, 0, parallel_hds[0]); |
391 |
} |
392 |
|
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/* Sound card */
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audio_init(pci_bus); |
395 |
/* Network card */
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network_init(); |
397 |
} |
398 |
|
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static QEMUMachine mips_fulong2e_machine = {
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.name = "fulong2e",
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401 |
.desc = "Fulong 2e mini pc",
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.init = mips_fulong2e_init, |
403 |
}; |
404 |
|
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static void mips_fulong2e_machine_init(void) |
406 |
{ |
407 |
qemu_register_machine(&mips_fulong2e_machine); |
408 |
} |
409 |
|
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machine_init(mips_fulong2e_machine_init); |