full system SPARC emulation (Blue Swirl)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1085 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 130 insertions, 0 deletions

diff --git a/hw/sun4m.c b/hw/sun4m.c
new file mode 100644
index 0000000000..05dbd56a5f
--- /dev/null
+++ b/hw/sun4m.c
@@ -0,0 +1,130 @@
+/*
+ * QEMU Sun4m System Emulator
+ * 
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "vl.h"
+#include "m48t08.h"
+
+#define KERNEL_LOAD_ADDR     0x00004000
+#define MMU_CONTEXT_TBL      0x00003000
+#define MMU_L1PTP            (MMU_CONTEXT_TBL + 0x0400)
+#define MMU_L2PTP            (MMU_CONTEXT_TBL + 0x0800)
+#define ROMVEC_DATA          (MMU_CONTEXT_TBL + 0x1800)
+#define PROM_ADDR	     0xffd04000
+#define PROM_FILENAME	     "proll.bin"
+#define PHYS_JJ_EEPROM	0x71200000	/* [2000] MK48T08 */
+#define PHYS_JJ_IDPROM_OFF	0x1FD8
+#define PHYS_JJ_EEPROM_SIZE	0x2000
+
+/* TSC handling */
+
+uint64_t cpu_get_tsc()
+{
+    return qemu_get_clock(vm_clock);
+}
+
+void DMA_run() {}
+void SB16_run() {}
+void vga_invalidate_display() {}
+void vga_screen_dump(const char *filename) {}
+int serial_can_receive(SerialState *s) { return 0; }
+void serial_receive_byte(SerialState *s, int ch) {}
+void serial_receive_break(SerialState *s) {}
+
+static m48t08_t *nvram;
+
+/* Sun4m hardware initialisation */
+void sun4m_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)
+{
+    char buf[1024];
+    int ret, linux_boot, bios_size;
+    unsigned long bios_offset;
+
+    linux_boot = (kernel_filename != NULL);
+
+    /* allocate RAM */
+    cpu_register_physical_memory(0, ram_size, 0);
+    bios_offset = ram_size;
+
+    iommu_init();
+    sched_init();
+    tcx_init(ds);
+    lance_init(&nd_table[0], 6);
+    nvram = m48t08_init(PHYS_JJ_EEPROM, PHYS_JJ_EEPROM_SIZE);
+
+    magic_init(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
+
+#if 0
+    snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAME);
+    bios_size = get_image_size(buf);
+    ret = load_image(buf, phys_ram_base + bios_offset);
+    if (ret != bios_size) {
+        fprintf(stderr, "qemu: could not load prom '%s'\n", buf);
+        exit(1);
+    }
+    cpu_register_physical_memory(PROM_ADDR, 
+                                 bios_size, bios_offset | IO_MEM_ROM);
+#endif
+
+    /* We load Proll as the kernel and start it. It will issue a magic
+       IO to load the real kernel */
+    if (linux_boot) {
+	snprintf(buf, sizeof(buf), "%s/%s", bios_dir, PROM_FILENAME);
+        ret = load_kernel(buf, 
+                          phys_ram_base + KERNEL_LOAD_ADDR);
+        if (ret < 0) {
+            fprintf(stderr, "qemu: could not load kernel '%s'\n", 
+                    buf);
+            exit(1);
+        }
+    }
+    /* Setup a MMU entry for entire address space */
+    stl_raw(phys_ram_base + MMU_CONTEXT_TBL, (MMU_L1PTP >> 4) | 1);
+    stl_raw(phys_ram_base + MMU_L1PTP, (MMU_L2PTP >> 4) | 1);
+#if 0
+    stl_raw(phys_ram_base + MMU_L1PTP + (0x50 << 2), (MMU_L2PTP >> 4) | 1); // frame buffer at 50..
+#endif
+    stl_raw(phys_ram_base + MMU_L1PTP + (0xff << 2), (MMU_L2PTP >> 4) | 1); // ff.. == 00..
+    /* 3 = U:RWX S:RWX */
+    stl_raw(phys_ram_base + MMU_L2PTP, (3 << PTE_ACCESS_SHIFT) | 2);
+#if 0
+    stl_raw(phys_ram_base + MMU_L2PTP + 0x84, (PHYS_JJ_TCX_FB >> 4) \
+	    | (3 << PTE_ACCESS_SHIFT) | 2); // frame buf
+    stl_raw(phys_ram_base + MMU_L2PTP + 0x88, (PHYS_JJ_TCX_FB >> 4) \
+	    | (3 << PTE_ACCESS_SHIFT) | 2); // frame buf
+    stl_raw(phys_ram_base + MMU_L2PTP + 0x140, (PHYS_JJ_TCX_FB >> 4) \
+	    | (3 << PTE_ACCESS_SHIFT) | 2); // frame buf
+    // "Empirical constant"
+    stl_raw(phys_ram_base + ROMVEC_DATA, 0x10010407);
+
+    // Version: V3 prom
+    stl_raw(phys_ram_base + ROMVEC_DATA + 4, 3);
+
+    stl_raw(phys_ram_base + ROMVEC_DATA + 0x1c, ROMVEC_DATA+0x400);
+    stl_raw(phys_ram_base + ROMVEC_DATA + 0x400, ROMVEC_DATA+0x404);
+    stl_raw(phys_ram_base + ROMVEC_DATA + 0x404, 0x81c3e008); // retl
+    stl_raw(phys_ram_base + ROMVEC_DATA + 0x408, 0x01000000); // nop
+#endif
+}