609 lines
19 KiB
C
609 lines
19 KiB
C
/*
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* QEMU Sun4m System Emulator
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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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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//#define DEBUG_IRQ
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/*
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* Sun4m architecture was used in the following machines:
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*
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* SPARCserver 6xxMP/xx
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* SPARCclassic (SPARCclassic Server)(SPARCstation LC) (4/15), SPARCclassic X (4/10)
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* SPARCstation LX/ZX (4/30)
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* SPARCstation Voyager
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* SPARCstation 10/xx, SPARCserver 10/xx
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* SPARCstation 5, SPARCserver 5
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* SPARCstation 20/xx, SPARCserver 20
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* SPARCstation 4
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*
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* See for example: http://www.sunhelp.org/faq/sunref1.html
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*/
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#ifdef DEBUG_IRQ
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#define DPRINTF(fmt, args...) \
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do { printf("CPUIRQ: " fmt , ##args); } while (0)
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#else
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#define DPRINTF(fmt, args...)
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#endif
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#define KERNEL_LOAD_ADDR 0x00004000
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#define CMDLINE_ADDR 0x007ff000
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#define INITRD_LOAD_ADDR 0x00800000
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#define PROM_SIZE_MAX (256 * 1024)
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#define PROM_PADDR 0xff0000000ULL
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#define PROM_VADDR 0xffd00000
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#define PROM_FILENAME "openbios-sparc32"
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#define MAX_CPUS 16
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#define MAX_PILS 16
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struct hwdef {
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target_phys_addr_t iommu_base, slavio_base;
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target_phys_addr_t intctl_base, counter_base, nvram_base, ms_kb_base;
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target_phys_addr_t serial_base, fd_base;
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target_phys_addr_t dma_base, esp_base, le_base;
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target_phys_addr_t tcx_base, cs_base, power_base;
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long vram_size, nvram_size;
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// IRQ numbers are not PIL ones, but master interrupt controller register
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// bit numbers
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int intctl_g_intr, esp_irq, le_irq, clock_irq, clock1_irq;
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int ser_irq, ms_kb_irq, fd_irq, me_irq, cs_irq;
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int machine_id; // For NVRAM
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uint32_t intbit_to_level[32];
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};
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/* TSC handling */
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uint64_t cpu_get_tsc()
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{
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return qemu_get_clock(vm_clock);
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}
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int DMA_get_channel_mode (int nchan)
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{
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return 0;
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}
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int DMA_read_memory (int nchan, void *buf, int pos, int size)
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{
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return 0;
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}
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int DMA_write_memory (int nchan, void *buf, int pos, int size)
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{
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return 0;
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}
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void DMA_hold_DREQ (int nchan) {}
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void DMA_release_DREQ (int nchan) {}
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void DMA_schedule(int nchan) {}
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void DMA_run (void) {}
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void DMA_init (int high_page_enable) {}
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void DMA_register_channel (int nchan,
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DMA_transfer_handler transfer_handler,
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void *opaque)
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{
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}
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static void nvram_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
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{
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m48t59_write(nvram, addr++, (value >> 8) & 0xff);
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m48t59_write(nvram, addr++, value & 0xff);
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}
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static void nvram_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
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{
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m48t59_write(nvram, addr++, value >> 24);
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m48t59_write(nvram, addr++, (value >> 16) & 0xff);
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m48t59_write(nvram, addr++, (value >> 8) & 0xff);
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m48t59_write(nvram, addr++, value & 0xff);
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}
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static void nvram_set_string (m48t59_t *nvram, uint32_t addr,
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const unsigned char *str, uint32_t max)
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{
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unsigned int i;
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for (i = 0; i < max && str[i] != '\0'; i++) {
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m48t59_write(nvram, addr + i, str[i]);
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}
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m48t59_write(nvram, addr + max - 1, '\0');
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}
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static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr,
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const unsigned char *str)
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{
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uint32_t len;
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len = strlen(str) + 1;
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nvram_set_string(nvram, addr, str, len);
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return addr + len;
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}
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static void nvram_finish_partition (m48t59_t *nvram, uint32_t start,
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uint32_t end)
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{
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unsigned int i, sum;
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// Length divided by 16
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m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff);
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m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff);
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// Checksum
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sum = m48t59_read(nvram, start);
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for (i = 0; i < 14; i++) {
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sum += m48t59_read(nvram, start + 2 + i);
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
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}
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m48t59_write(nvram, start + 1, sum & 0xff);
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}
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extern int nographic;
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static void nvram_init(m48t59_t *nvram, uint8_t *macaddr, const char *cmdline,
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int boot_device, uint32_t RAM_size,
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uint32_t kernel_size,
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int width, int height, int depth,
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int machine_id)
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{
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unsigned char tmp = 0;
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unsigned int i, j;
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uint32_t start, end;
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// Try to match PPC NVRAM
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nvram_set_string(nvram, 0x00, "QEMU_BIOS", 16);
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nvram_set_lword(nvram, 0x10, 0x00000001); /* structure v1 */
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// NVRAM_size, arch not applicable
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m48t59_write(nvram, 0x2D, smp_cpus & 0xff);
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m48t59_write(nvram, 0x2E, 0);
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m48t59_write(nvram, 0x2F, nographic & 0xff);
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nvram_set_lword(nvram, 0x30, RAM_size);
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m48t59_write(nvram, 0x34, boot_device & 0xff);
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nvram_set_lword(nvram, 0x38, KERNEL_LOAD_ADDR);
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nvram_set_lword(nvram, 0x3C, kernel_size);
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if (cmdline) {
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strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
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nvram_set_lword(nvram, 0x40, CMDLINE_ADDR);
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nvram_set_lword(nvram, 0x44, strlen(cmdline));
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}
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// initrd_image, initrd_size passed differently
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nvram_set_word(nvram, 0x54, width);
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nvram_set_word(nvram, 0x56, height);
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nvram_set_word(nvram, 0x58, depth);
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// OpenBIOS nvram variables
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// Variable partition
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start = 252;
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m48t59_write(nvram, start, 0x70);
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nvram_set_string(nvram, start + 4, "system", 12);
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end = start + 16;
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for (i = 0; i < nb_prom_envs; i++)
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end = nvram_set_var(nvram, end, prom_envs[i]);
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m48t59_write(nvram, end++ , 0);
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end = start + ((end - start + 15) & ~15);
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nvram_finish_partition(nvram, start, end);
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// free partition
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start = end;
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m48t59_write(nvram, start, 0x7f);
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nvram_set_string(nvram, start + 4, "free", 12);
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end = 0x1fd0;
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nvram_finish_partition(nvram, start, end);
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// Sun4m specific use
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start = i = 0x1fd8;
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m48t59_write(nvram, i++, 0x01);
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m48t59_write(nvram, i++, machine_id);
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j = 0;
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m48t59_write(nvram, i++, macaddr[j++]);
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m48t59_write(nvram, i++, macaddr[j++]);
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m48t59_write(nvram, i++, macaddr[j++]);
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m48t59_write(nvram, i++, macaddr[j++]);
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m48t59_write(nvram, i++, macaddr[j++]);
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m48t59_write(nvram, i, macaddr[j]);
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/* Calculate checksum */
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for (i = start; i < start + 15; i++) {
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tmp ^= m48t59_read(nvram, i);
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}
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m48t59_write(nvram, start + 15, tmp);
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}
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static void *slavio_intctl;
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void pic_info()
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{
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slavio_pic_info(slavio_intctl);
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}
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void irq_info()
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{
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slavio_irq_info(slavio_intctl);
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}
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void cpu_check_irqs(CPUState *env)
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{
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if (env->pil_in && (env->interrupt_index == 0 ||
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(env->interrupt_index & ~15) == TT_EXTINT)) {
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unsigned int i;
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for (i = 15; i > 0; i--) {
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if (env->pil_in & (1 << i)) {
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int old_interrupt = env->interrupt_index;
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env->interrupt_index = TT_EXTINT | i;
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if (old_interrupt != env->interrupt_index)
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cpu_interrupt(env, CPU_INTERRUPT_HARD);
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break;
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}
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}
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} else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
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env->interrupt_index = 0;
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cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
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}
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}
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static void cpu_set_irq(void *opaque, int irq, int level)
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{
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CPUState *env = opaque;
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if (level) {
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DPRINTF("Raise CPU IRQ %d\n", irq);
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env->halted = 0;
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env->pil_in |= 1 << irq;
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cpu_check_irqs(env);
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} else {
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DPRINTF("Lower CPU IRQ %d\n", irq);
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env->pil_in &= ~(1 << irq);
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cpu_check_irqs(env);
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}
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}
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static void dummy_cpu_set_irq(void *opaque, int irq, int level)
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{
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}
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static void *slavio_misc;
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void qemu_system_powerdown(void)
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{
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slavio_set_power_fail(slavio_misc, 1);
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}
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static void main_cpu_reset(void *opaque)
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{
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CPUState *env = opaque;
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cpu_reset(env);
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env->halted = 0;
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}
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static void secondary_cpu_reset(void *opaque)
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{
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CPUState *env = opaque;
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cpu_reset(env);
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env->halted = 1;
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}
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static void *sun4m_hw_init(const struct hwdef *hwdef, int RAM_size,
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DisplayState *ds, const char *cpu_model)
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{
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CPUState *env, *envs[MAX_CPUS];
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unsigned int i;
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void *iommu, *espdma, *ledma, *main_esp, *nvram;
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const sparc_def_t *def;
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qemu_irq *cpu_irqs[MAX_CPUS], *slavio_irq, *slavio_cpu_irq,
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*espdma_irq, *ledma_irq;
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qemu_irq *esp_reset, *le_reset;
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/* init CPUs */
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sparc_find_by_name(cpu_model, &def);
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if (def == NULL) {
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fprintf(stderr, "Unable to find Sparc CPU definition\n");
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exit(1);
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}
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for(i = 0; i < smp_cpus; i++) {
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env = cpu_init();
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cpu_sparc_register(env, def);
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envs[i] = env;
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if (i == 0) {
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qemu_register_reset(main_cpu_reset, env);
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} else {
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qemu_register_reset(secondary_cpu_reset, env);
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env->halted = 1;
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}
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register_savevm("cpu", i, 3, cpu_save, cpu_load, env);
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cpu_irqs[i] = qemu_allocate_irqs(cpu_set_irq, envs[i], MAX_PILS);
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}
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for (i = smp_cpus; i < MAX_CPUS; i++)
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cpu_irqs[i] = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, MAX_PILS);
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/* allocate RAM */
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cpu_register_physical_memory(0, RAM_size, 0);
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iommu = iommu_init(hwdef->iommu_base);
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slavio_intctl = slavio_intctl_init(hwdef->intctl_base,
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hwdef->intctl_base + 0x10000ULL,
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&hwdef->intbit_to_level[0],
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&slavio_irq, &slavio_cpu_irq,
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cpu_irqs,
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hwdef->clock_irq);
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espdma = sparc32_dma_init(hwdef->dma_base, slavio_irq[hwdef->esp_irq],
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iommu, &espdma_irq, &esp_reset);
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ledma = sparc32_dma_init(hwdef->dma_base + 16ULL,
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slavio_irq[hwdef->le_irq], iommu, &ledma_irq,
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&le_reset);
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if (graphic_depth != 8 && graphic_depth != 24) {
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fprintf(stderr, "qemu: Unsupported depth: %d\n", graphic_depth);
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exit (1);
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}
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tcx_init(ds, hwdef->tcx_base, phys_ram_base + RAM_size, RAM_size,
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hwdef->vram_size, graphic_width, graphic_height, graphic_depth);
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if (nd_table[0].model == NULL
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|| strcmp(nd_table[0].model, "lance") == 0) {
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lance_init(&nd_table[0], hwdef->le_base, ledma, *ledma_irq, le_reset);
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} else if (strcmp(nd_table[0].model, "?") == 0) {
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fprintf(stderr, "qemu: Supported NICs: lance\n");
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exit (1);
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} else {
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fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd_table[0].model);
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exit (1);
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}
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nvram = m48t59_init(slavio_irq[0], hwdef->nvram_base, 0,
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hwdef->nvram_size, 8);
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for (i = 0; i < MAX_CPUS; i++) {
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slavio_timer_init(hwdef->counter_base +
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(target_phys_addr_t)(i * TARGET_PAGE_SIZE),
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slavio_cpu_irq[i], 0);
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}
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slavio_timer_init(hwdef->counter_base + 0x10000ULL,
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slavio_irq[hwdef->clock1_irq], 2);
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slavio_serial_ms_kbd_init(hwdef->ms_kb_base, slavio_irq[hwdef->ms_kb_irq]);
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// Slavio TTYA (base+4, Linux ttyS0) is the first Qemu serial device
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// Slavio TTYB (base+0, Linux ttyS1) is the second Qemu serial device
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slavio_serial_init(hwdef->serial_base, slavio_irq[hwdef->ser_irq],
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serial_hds[1], serial_hds[0]);
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fdctrl_init(slavio_irq[hwdef->fd_irq], 0, 1, hwdef->fd_base, fd_table);
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main_esp = esp_init(bs_table, hwdef->esp_base, espdma, *espdma_irq,
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esp_reset);
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for (i = 0; i < MAX_DISKS; i++) {
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if (bs_table[i]) {
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esp_scsi_attach(main_esp, bs_table[i], i);
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}
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}
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slavio_misc = slavio_misc_init(hwdef->slavio_base, hwdef->power_base,
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slavio_irq[hwdef->me_irq]);
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if (hwdef->cs_base != (target_phys_addr_t)-1)
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cs_init(hwdef->cs_base, hwdef->cs_irq, slavio_intctl);
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return nvram;
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}
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static void sun4m_load_kernel(long vram_size, int RAM_size, int boot_device,
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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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int machine_id,
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void *nvram)
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{
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int ret, linux_boot;
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char buf[1024];
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unsigned int i;
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long prom_offset, initrd_size, kernel_size;
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linux_boot = (kernel_filename != NULL);
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prom_offset = RAM_size + vram_size;
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cpu_register_physical_memory(PROM_PADDR,
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(PROM_SIZE_MAX + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK,
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prom_offset | IO_MEM_ROM);
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if (bios_name == NULL)
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bios_name = PROM_FILENAME;
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snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
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ret = load_elf(buf, PROM_PADDR - PROM_VADDR, NULL, NULL, NULL);
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if (ret < 0) {
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fprintf(stderr, "qemu: could not load prom '%s'\n",
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buf);
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exit(1);
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}
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kernel_size = 0;
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if (linux_boot) {
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kernel_size = load_elf(kernel_filename, -0xf0000000ULL, NULL, NULL,
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NULL);
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if (kernel_size < 0)
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kernel_size = load_aout(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
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if (kernel_size < 0)
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kernel_size = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
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if (kernel_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n",
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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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if (initrd_filename) {
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initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
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if (initrd_size < 0) {
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fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
|
initrd_filename);
|
|
exit(1);
|
|
}
|
|
}
|
|
if (initrd_size > 0) {
|
|
for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
|
|
if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i)
|
|
== 0x48647253) { // HdrS
|
|
stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
|
|
stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline,
|
|
boot_device, RAM_size, kernel_size, graphic_width,
|
|
graphic_height, graphic_depth, machine_id);
|
|
}
|
|
|
|
static const struct hwdef hwdefs[] = {
|
|
/* SS-5 */
|
|
{
|
|
.iommu_base = 0x10000000,
|
|
.tcx_base = 0x50000000,
|
|
.cs_base = 0x6c000000,
|
|
.slavio_base = 0x70000000,
|
|
.ms_kb_base = 0x71000000,
|
|
.serial_base = 0x71100000,
|
|
.nvram_base = 0x71200000,
|
|
.fd_base = 0x71400000,
|
|
.counter_base = 0x71d00000,
|
|
.intctl_base = 0x71e00000,
|
|
.dma_base = 0x78400000,
|
|
.esp_base = 0x78800000,
|
|
.le_base = 0x78c00000,
|
|
.power_base = 0x7a000000,
|
|
.vram_size = 0x00100000,
|
|
.nvram_size = 0x2000,
|
|
.esp_irq = 18,
|
|
.le_irq = 16,
|
|
.clock_irq = 7,
|
|
.clock1_irq = 19,
|
|
.ms_kb_irq = 14,
|
|
.ser_irq = 15,
|
|
.fd_irq = 22,
|
|
.me_irq = 30,
|
|
.cs_irq = 5,
|
|
.machine_id = 0x80,
|
|
.intbit_to_level = {
|
|
2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12,
|
|
6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0,
|
|
},
|
|
},
|
|
/* SS-10 */
|
|
{
|
|
.iommu_base = 0xfe0000000ULL,
|
|
.tcx_base = 0xe20000000ULL,
|
|
.cs_base = -1,
|
|
.slavio_base = 0xff0000000ULL,
|
|
.ms_kb_base = 0xff1000000ULL,
|
|
.serial_base = 0xff1100000ULL,
|
|
.nvram_base = 0xff1200000ULL,
|
|
.fd_base = 0xff1700000ULL,
|
|
.counter_base = 0xff1300000ULL,
|
|
.intctl_base = 0xff1400000ULL,
|
|
.dma_base = 0xef0400000ULL,
|
|
.esp_base = 0xef0800000ULL,
|
|
.le_base = 0xef0c00000ULL,
|
|
.power_base = 0xefa000000ULL,
|
|
.vram_size = 0x00100000,
|
|
.nvram_size = 0x2000,
|
|
.esp_irq = 18,
|
|
.le_irq = 16,
|
|
.clock_irq = 7,
|
|
.clock1_irq = 19,
|
|
.ms_kb_irq = 14,
|
|
.ser_irq = 15,
|
|
.fd_irq = 22,
|
|
.me_irq = 30,
|
|
.cs_irq = -1,
|
|
.machine_id = 0x72,
|
|
.intbit_to_level = {
|
|
2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12,
|
|
6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0,
|
|
},
|
|
},
|
|
};
|
|
|
|
static void sun4m_common_init(int RAM_size, int boot_device, DisplayState *ds,
|
|
const char *kernel_filename, const char *kernel_cmdline,
|
|
const char *initrd_filename, const char *cpu_model,
|
|
unsigned int machine, int max_ram)
|
|
{
|
|
void *nvram;
|
|
|
|
if ((unsigned int)RAM_size > (unsigned int)max_ram) {
|
|
fprintf(stderr, "qemu: Too much memory for this machine: %d, maximum %d\n",
|
|
(unsigned int)RAM_size / (1024 * 1024),
|
|
(unsigned int)max_ram / (1024 * 1024));
|
|
exit(1);
|
|
}
|
|
nvram = sun4m_hw_init(&hwdefs[machine], RAM_size, ds, cpu_model);
|
|
|
|
sun4m_load_kernel(hwdefs[machine].vram_size, RAM_size, boot_device,
|
|
kernel_filename, kernel_cmdline, initrd_filename,
|
|
hwdefs[machine].machine_id, nvram);
|
|
}
|
|
|
|
/* SPARCstation 5 hardware initialisation */
|
|
static void ss5_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)
|
|
{
|
|
if (cpu_model == NULL)
|
|
cpu_model = "Fujitsu MB86904";
|
|
sun4m_common_init(RAM_size, boot_device, ds, kernel_filename,
|
|
kernel_cmdline, initrd_filename, cpu_model,
|
|
0, 0x10000000);
|
|
}
|
|
|
|
/* SPARCstation 10 hardware initialisation */
|
|
static void ss10_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)
|
|
{
|
|
if (cpu_model == NULL)
|
|
cpu_model = "TI SuperSparc II";
|
|
sun4m_common_init(RAM_size, boot_device, ds, kernel_filename,
|
|
kernel_cmdline, initrd_filename, cpu_model,
|
|
1, 0xffffffff); // XXX actually first 62GB ok
|
|
}
|
|
|
|
QEMUMachine ss5_machine = {
|
|
"SS-5",
|
|
"Sun4m platform, SPARCstation 5",
|
|
ss5_init,
|
|
};
|
|
|
|
QEMUMachine ss10_machine = {
|
|
"SS-10",
|
|
"Sun4m platform, SPARCstation 10",
|
|
ss10_init,
|
|
};
|