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Commit | Line | Data |
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80bb2ff7 RH |
1 | /* |
2 | * QEMU Alpha DP264/CLIPPER hardware system emulator. | |
3 | * | |
4 | * Choose CLIPPER IRQ mappings over, say, DP264, MONET, or WEBBRICK | |
66a0a2cb | 5 | * variants because CLIPPER doesn't have an SMC669 SuperIO controller |
80bb2ff7 RH |
6 | * that we need to emulate as well. |
7 | */ | |
8 | ||
e2e5e114 | 9 | #include "qemu/osdep.h" |
4771d756 PB |
10 | #include "qemu-common.h" |
11 | #include "cpu.h" | |
80bb2ff7 | 12 | #include "elf.h" |
83c9f4ca | 13 | #include "hw/loader.h" |
47b43a1f | 14 | #include "alpha_sys.h" |
c525436e | 15 | #include "qemu/error-report.h" |
bcdb9064 | 16 | #include "hw/rtc/mc146818rtc.h" |
25297910 | 17 | #include "hw/ide/pci.h" |
a4cb7739 | 18 | #include "hw/isa/superio.h" |
852c27e2 | 19 | #include "net/net.h" |
f348b6d1 | 20 | #include "qemu/cutils.h" |
2c65db5e | 21 | #include "qemu/datadir.h" |
b58337ff | 22 | #include "net/net.h" |
80bb2ff7 RH |
23 | |
24 | #define MAX_IDE_BUS 2 | |
25 | ||
26 | static uint64_t cpu_alpha_superpage_to_phys(void *opaque, uint64_t addr) | |
27 | { | |
28 | if (((addr >> 41) & 3) == 2) { | |
29 | addr &= 0xffffffffffull; | |
30 | } | |
31 | return addr; | |
32 | } | |
33 | ||
34 | /* Note that there are at least 3 viewpoints of IRQ numbers on Alpha systems. | |
35 | (0) The dev_irq_n lines into the cpu, which we totally ignore, | |
36 | (1) The DRIR lines in the typhoon chipset, | |
37 | (2) The "vector" aka mangled interrupt number reported by SRM PALcode, | |
38 | (3) The interrupt number assigned by the kernel. | |
39 | The following function is concerned with (1) only. */ | |
40 | ||
41 | static int clipper_pci_map_irq(PCIDevice *d, int irq_num) | |
42 | { | |
43 | int slot = d->devfn >> 3; | |
44 | ||
45 | assert(irq_num >= 0 && irq_num <= 3); | |
46 | ||
47 | return (slot + 1) * 4 + irq_num; | |
48 | } | |
49 | ||
3ef96221 | 50 | static void clipper_init(MachineState *machine) |
80bb2ff7 | 51 | { |
3ef96221 | 52 | ram_addr_t ram_size = machine->ram_size; |
3ef96221 MA |
53 | const char *kernel_filename = machine->kernel_filename; |
54 | const char *kernel_cmdline = machine->kernel_cmdline; | |
55 | const char *initrd_filename = machine->initrd_filename; | |
ad601177 | 56 | AlphaCPU *cpus[4]; |
80bb2ff7 | 57 | PCIBus *pci_bus; |
be1765f3 | 58 | PCIDevice *pci_dev; |
5ec4f1d3 | 59 | DeviceState *i82378_dev; |
48a18b3c | 60 | ISABus *isa_bus; |
80bb2ff7 | 61 | qemu_irq rtc_irq; |
5ec4f1d3 | 62 | qemu_irq isa_irq; |
80bb2ff7 | 63 | long size, i; |
c18f8556 | 64 | char *palcode_filename; |
617160c9 BZ |
65 | uint64_t palcode_entry; |
66 | uint64_t kernel_entry, kernel_low; | |
33decbd2 | 67 | unsigned int smp_cpus = machine->smp.cpus; |
80bb2ff7 RH |
68 | |
69 | /* Create up to 4 cpus. */ | |
70 | memset(cpus, 0, sizeof(cpus)); | |
71 | for (i = 0; i < smp_cpus; ++i) { | |
fb92da84 | 72 | cpus[i] = ALPHA_CPU(cpu_create(machine->cpu_type)); |
80bb2ff7 RH |
73 | } |
74 | ||
387a1dcb JT |
75 | /* |
76 | * arg0 -> memory size | |
77 | * arg1 -> kernel entry point | |
78 | * arg2 -> config word | |
79 | * | |
80 | * Config word: bits 0-5 -> ncpus | |
81 | * bit 6 -> nographics option (for HWRPB CTB) | |
82 | * | |
83 | * See init_hwrpb() in the PALcode. | |
84 | */ | |
ad601177 AF |
85 | cpus[0]->env.trap_arg0 = ram_size; |
86 | cpus[0]->env.trap_arg1 = 0; | |
387a1dcb | 87 | cpus[0]->env.trap_arg2 = smp_cpus | (!machine->enable_graphics << 6); |
80bb2ff7 | 88 | |
3a8233dc JT |
89 | /* |
90 | * Init the chipset. Because we're using CLIPPER IRQ mappings, | |
91 | * the minimum PCI device IdSel is 1. | |
92 | */ | |
5ec4f1d3 | 93 | pci_bus = typhoon_init(machine->ram, &isa_irq, &rtc_irq, cpus, |
3a8233dc | 94 | clipper_pci_map_irq, PCI_DEVFN(1, 0)); |
80bb2ff7 | 95 | |
5ec4f1d3 JT |
96 | /* |
97 | * Init the PCI -> ISA bridge. | |
98 | * | |
99 | * Technically, PCI-based Alphas shipped with one of three different | |
100 | * PCI-ISA bridges: | |
101 | * | |
102 | * - Intel i82378 SIO | |
103 | * - Cypress CY82c693UB | |
104 | * - ALI M1533 | |
105 | * | |
106 | * (An Intel i82375 PCI-EISA bridge was also used on some models.) | |
107 | * | |
108 | * For simplicity, we model an i82378 here, even though it wouldn't | |
109 | * have been on any Tsunami/Typhoon systems; it's close enough, and | |
110 | * we don't want to deal with modelling the CY82c693UB (which has | |
111 | * incompatible edge/level control registers, plus other peripherals | |
112 | * like IDE and USB) or the M1533 (which also has IDE and USB). | |
113 | * | |
114 | * Importantly, we need to provide a PCI device node for it, otherwise | |
115 | * some operating systems won't notice there's an ISA bus to configure. | |
116 | */ | |
117 | i82378_dev = DEVICE(pci_create_simple(pci_bus, PCI_DEVFN(7, 0), "i82378")); | |
118 | isa_bus = ISA_BUS(qdev_get_child_bus(i82378_dev, "isa.0")); | |
119 | ||
120 | /* Connect the ISA PIC to the Typhoon IRQ used for ISA interrupts. */ | |
121 | qdev_connect_gpio_out(i82378_dev, 0, isa_irq); | |
122 | ||
e605e969 | 123 | /* Since we have an SRM-compatible PALcode, use the SRM epoch. */ |
6c646a11 | 124 | mc146818_rtc_init(isa_bus, 1900, rtc_irq); |
e605e969 | 125 | |
80bb2ff7 | 126 | /* VGA setup. Don't bother loading the bios. */ |
606f90cc | 127 | pci_vga_init(pci_bus); |
80bb2ff7 | 128 | |
80bb2ff7 RH |
129 | /* Network setup. e1000 is good enough, failing Tulip support. */ |
130 | for (i = 0; i < nb_nics; i++) { | |
29b358f9 | 131 | pci_nic_init_nofail(&nd_table[i], pci_bus, "e1000", NULL); |
80bb2ff7 RH |
132 | } |
133 | ||
a4cb7739 PMD |
134 | /* Super I/O */ |
135 | isa_create_simple(isa_bus, TYPE_SMC37C669_SUPERIO); | |
136 | ||
80bb2ff7 | 137 | /* IDE disk setup. */ |
be1765f3 BZ |
138 | pci_dev = pci_create_simple(pci_bus, -1, "cmd646-ide"); |
139 | pci_ide_create_devs(pci_dev); | |
80bb2ff7 RH |
140 | |
141 | /* Load PALcode. Given that this is not "real" cpu palcode, | |
142 | but one explicitly written for the emulation, we might as | |
143 | well load it directly from and ELF image. */ | |
c18f8556 | 144 | palcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, |
2c4a83eb | 145 | machine->firmware ?: "palcode-clipper"); |
80bb2ff7 | 146 | if (palcode_filename == NULL) { |
c525436e | 147 | error_report("no palcode provided"); |
80bb2ff7 RH |
148 | exit(1); |
149 | } | |
4366e1db | 150 | size = load_elf(palcode_filename, NULL, cpu_alpha_superpage_to_phys, |
617160c9 | 151 | NULL, &palcode_entry, NULL, NULL, NULL, |
7ef295ea | 152 | 0, EM_ALPHA, 0, 0); |
80bb2ff7 | 153 | if (size < 0) { |
c525436e | 154 | error_report("could not load palcode '%s'", palcode_filename); |
80bb2ff7 RH |
155 | exit(1); |
156 | } | |
c18f8556 | 157 | g_free(palcode_filename); |
80bb2ff7 RH |
158 | |
159 | /* Start all cpus at the PALcode RESET entry point. */ | |
160 | for (i = 0; i < smp_cpus; ++i) { | |
ad601177 AF |
161 | cpus[i]->env.pc = palcode_entry; |
162 | cpus[i]->env.palbr = palcode_entry; | |
80bb2ff7 RH |
163 | } |
164 | ||
165 | /* Load a kernel. */ | |
166 | if (kernel_filename) { | |
167 | uint64_t param_offset; | |
168 | ||
4366e1db | 169 | size = load_elf(kernel_filename, NULL, cpu_alpha_superpage_to_phys, |
617160c9 | 170 | NULL, &kernel_entry, &kernel_low, NULL, NULL, |
7ef295ea | 171 | 0, EM_ALPHA, 0, 0); |
80bb2ff7 | 172 | if (size < 0) { |
c525436e | 173 | error_report("could not load kernel '%s'", kernel_filename); |
80bb2ff7 RH |
174 | exit(1); |
175 | } | |
176 | ||
ad601177 | 177 | cpus[0]->env.trap_arg1 = kernel_entry; |
80bb2ff7 RH |
178 | |
179 | param_offset = kernel_low - 0x6000; | |
180 | ||
181 | if (kernel_cmdline) { | |
182 | pstrcpy_targphys("cmdline", param_offset, 0x100, kernel_cmdline); | |
183 | } | |
184 | ||
185 | if (initrd_filename) { | |
f3839fda LZ |
186 | long initrd_base; |
187 | int64_t initrd_size; | |
80bb2ff7 RH |
188 | |
189 | initrd_size = get_image_size(initrd_filename); | |
190 | if (initrd_size < 0) { | |
c525436e MA |
191 | error_report("could not load initial ram disk '%s'", |
192 | initrd_filename); | |
80bb2ff7 RH |
193 | exit(1); |
194 | } | |
195 | ||
196 | /* Put the initrd image as high in memory as possible. */ | |
197 | initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; | |
198 | load_image_targphys(initrd_filename, initrd_base, | |
199 | ram_size - initrd_base); | |
200 | ||
42874d3a PM |
201 | address_space_stq(&address_space_memory, param_offset + 0x100, |
202 | initrd_base + 0xfffffc0000000000ULL, | |
203 | MEMTXATTRS_UNSPECIFIED, | |
204 | NULL); | |
205 | address_space_stq(&address_space_memory, param_offset + 0x108, | |
206 | initrd_size, MEMTXATTRS_UNSPECIFIED, NULL); | |
80bb2ff7 RH |
207 | } |
208 | } | |
209 | } | |
210 | ||
e264d29d | 211 | static void clipper_machine_init(MachineClass *mc) |
80bb2ff7 | 212 | { |
e264d29d EH |
213 | mc->desc = "Alpha DP264/CLIPPER"; |
214 | mc->init = clipper_init; | |
2059839b | 215 | mc->block_default_type = IF_IDE; |
e264d29d | 216 | mc->max_cpus = 4; |
ea0ac7f6 | 217 | mc->is_default = true; |
fb92da84 | 218 | mc->default_cpu_type = ALPHA_CPU_TYPE_NAME("ev67"); |
b844d822 | 219 | mc->default_ram_id = "ram"; |
80bb2ff7 RH |
220 | } |
221 | ||
e264d29d | 222 | DEFINE_MACHINE("clipper", clipper_machine_init) |