We set default boot order "cad" in every single machine definition except "pseries" and "moxiesim", even though very few boards actually care for boot order, and "cad" makes sense for even fewer. Machines that care: * pc and its variants Accept up to three letters 'a', 'b' (undocumented alias for 'a'), 'c', 'd' and 'n'. Reject all others (fatal with -boot). * nseries (n800, n810) Check whether order starts with 'n'. Silently ignored otherwise. * prep, g3beige, mac99 Extract the first character the machine understands (subset of 'a'..'f'). Silently ignored otherwise. * spapr Accept an arbitrary string (vl.c restricts it to contain only 'a'..'p', no duplicates). * sun4[mdc] Use the first character. Silently ignored otherwise. Strip characters these machines ignore from their default boot order. For all other machines, remove the unused default boot order alltogether. Note that my rename of QEMUMachine member boot_order to default_boot_order and QEMUMachineInitArgs member boot_device to boot_order has a welcome side effect: it makes every use of boot orders visible in this patch, for easy review. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
184 lines
5.5 KiB
C
184 lines
5.5 KiB
C
/*
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* QEMU Alpha DP264/CLIPPER hardware system emulator.
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*
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* Choose CLIPPER IRQ mappings over, say, DP264, MONET, or WEBBRICK
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* variants because CLIPPER doesn't have an SMC669 SuperIO controller
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* that we need to emulate as well.
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*/
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#include "hw/hw.h"
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#include "elf.h"
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#include "hw/loader.h"
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#include "hw/boards.h"
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#include "alpha_sys.h"
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#include "sysemu/sysemu.h"
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#include "hw/timer/mc146818rtc.h"
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#include "hw/ide.h"
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#include "hw/timer/i8254.h"
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#include "hw/char/serial.h"
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#define MAX_IDE_BUS 2
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static uint64_t cpu_alpha_superpage_to_phys(void *opaque, uint64_t addr)
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{
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if (((addr >> 41) & 3) == 2) {
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addr &= 0xffffffffffull;
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}
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return addr;
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}
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/* Note that there are at least 3 viewpoints of IRQ numbers on Alpha systems.
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(0) The dev_irq_n lines into the cpu, which we totally ignore,
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(1) The DRIR lines in the typhoon chipset,
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(2) The "vector" aka mangled interrupt number reported by SRM PALcode,
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(3) The interrupt number assigned by the kernel.
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The following function is concerned with (1) only. */
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static int clipper_pci_map_irq(PCIDevice *d, int irq_num)
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{
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int slot = d->devfn >> 3;
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assert(irq_num >= 0 && irq_num <= 3);
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return (slot + 1) * 4 + irq_num;
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}
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static void clipper_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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AlphaCPU *cpus[4];
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PCIBus *pci_bus;
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ISABus *isa_bus;
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qemu_irq rtc_irq;
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long size, i;
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const char *palcode_filename;
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uint64_t palcode_entry, palcode_low, palcode_high;
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uint64_t kernel_entry, kernel_low, kernel_high;
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/* Create up to 4 cpus. */
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memset(cpus, 0, sizeof(cpus));
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for (i = 0; i < smp_cpus; ++i) {
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cpus[i] = cpu_alpha_init(cpu_model ? cpu_model : "ev67");
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}
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cpus[0]->env.trap_arg0 = ram_size;
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cpus[0]->env.trap_arg1 = 0;
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cpus[0]->env.trap_arg2 = smp_cpus;
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/* Init the chipset. */
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pci_bus = typhoon_init(ram_size, &isa_bus, &rtc_irq, cpus,
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clipper_pci_map_irq);
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/* Since we have an SRM-compatible PALcode, use the SRM epoch. */
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rtc_init(isa_bus, 1900, rtc_irq);
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pit_init(isa_bus, 0x40, 0, NULL);
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isa_create_simple(isa_bus, "i8042");
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/* VGA setup. Don't bother loading the bios. */
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pci_vga_init(pci_bus);
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/* Serial code setup. */
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for (i = 0; i < MAX_SERIAL_PORTS; ++i) {
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if (serial_hds[i]) {
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serial_isa_init(isa_bus, i, serial_hds[i]);
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}
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}
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/* Network setup. e1000 is good enough, failing Tulip support. */
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for (i = 0; i < nb_nics; i++) {
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pci_nic_init_nofail(&nd_table[i], pci_bus, "e1000", NULL);
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}
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/* IDE disk setup. */
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{
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DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
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ide_drive_get(hd, MAX_IDE_BUS);
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pci_cmd646_ide_init(pci_bus, hd, 0);
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}
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/* Load PALcode. Given that this is not "real" cpu palcode,
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but one explicitly written for the emulation, we might as
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well load it directly from and ELF image. */
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palcode_filename = (bios_name ? bios_name : "palcode-clipper");
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palcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, palcode_filename);
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if (palcode_filename == NULL) {
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hw_error("no palcode provided\n");
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exit(1);
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}
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size = load_elf(palcode_filename, cpu_alpha_superpage_to_phys,
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NULL, &palcode_entry, &palcode_low, &palcode_high,
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0, EM_ALPHA, 0);
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if (size < 0) {
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hw_error("could not load palcode '%s'\n", palcode_filename);
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exit(1);
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}
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/* Start all cpus at the PALcode RESET entry point. */
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for (i = 0; i < smp_cpus; ++i) {
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cpus[i]->env.pal_mode = 1;
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cpus[i]->env.pc = palcode_entry;
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cpus[i]->env.palbr = palcode_entry;
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}
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/* Load a kernel. */
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if (kernel_filename) {
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uint64_t param_offset;
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size = load_elf(kernel_filename, cpu_alpha_superpage_to_phys,
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NULL, &kernel_entry, &kernel_low, &kernel_high,
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0, EM_ALPHA, 0);
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if (size < 0) {
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hw_error("could not load kernel '%s'\n", kernel_filename);
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exit(1);
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}
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cpus[0]->env.trap_arg1 = kernel_entry;
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param_offset = kernel_low - 0x6000;
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if (kernel_cmdline) {
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pstrcpy_targphys("cmdline", param_offset, 0x100, kernel_cmdline);
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}
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if (initrd_filename) {
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long initrd_base, initrd_size;
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initrd_size = get_image_size(initrd_filename);
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if (initrd_size < 0) {
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hw_error("could not load initial ram disk '%s'\n",
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initrd_filename);
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exit(1);
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}
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/* Put the initrd image as high in memory as possible. */
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initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK;
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load_image_targphys(initrd_filename, initrd_base,
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ram_size - initrd_base);
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stq_phys(param_offset + 0x100, initrd_base + 0xfffffc0000000000ULL);
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stq_phys(param_offset + 0x108, initrd_size);
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}
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}
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}
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static QEMUMachine clipper_machine = {
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.name = "clipper",
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.desc = "Alpha DP264/CLIPPER",
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.init = clipper_init,
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.max_cpus = 4,
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.is_default = 1,
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};
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static void clipper_machine_init(void)
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{
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qemu_register_machine(&clipper_machine);
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}
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machine_init(clipper_machine_init);
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