diff options
Diffstat (limited to 'arch/x86/xen/enlighten_pvh.c')
| -rw-r--r-- | arch/x86/xen/enlighten_pvh.c | 92 |
1 files changed, 17 insertions, 75 deletions
diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c index 02e3ab7ff242..35b7599d2d0b 100644 --- a/arch/x86/xen/enlighten_pvh.c +++ b/arch/x86/xen/enlighten_pvh.c @@ -6,103 +6,45 @@ #include <asm/io_apic.h> #include <asm/hypervisor.h> #include <asm/e820/api.h> -#include <asm/x86_init.h> +#include <xen/xen.h> #include <asm/xen/interface.h> #include <asm/xen/hypercall.h> -#include <xen/xen.h> #include <xen/interface/memory.h> -#include <xen/interface/hvm/start_info.h> /* * PVH variables. * - * xen_pvh pvh_bootparams and pvh_start_info need to live in data segment - * since they are used after startup_{32|64}, which clear .bss, are invoked. + * The variable xen_pvh needs to live in the data segment since it is used + * after startup_{32|64} is invoked, which will clear the .bss segment. */ bool xen_pvh __attribute__((section(".data"))) = 0; -struct boot_params pvh_bootparams __attribute__((section(".data"))); -struct hvm_start_info pvh_start_info __attribute__((section(".data"))); - -unsigned int pvh_start_info_sz = sizeof(pvh_start_info); -static u64 pvh_get_root_pointer(void) +void __init xen_pvh_init(void) { - return pvh_start_info.rsdp_paddr; + u32 msr; + u64 pfn; + + xen_pvh = 1; + xen_start_flags = pvh_start_info.flags; + + msr = cpuid_ebx(xen_cpuid_base() + 2); + pfn = __pa(hypercall_page); + wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); } -static void __init init_pvh_bootparams(void) +void __init mem_map_via_hcall(struct boot_params *boot_params_p) { struct xen_memory_map memmap; int rc; - memset(&pvh_bootparams, 0, sizeof(pvh_bootparams)); - - memmap.nr_entries = ARRAY_SIZE(pvh_bootparams.e820_table); - set_xen_guest_handle(memmap.buffer, pvh_bootparams.e820_table); + memmap.nr_entries = ARRAY_SIZE(boot_params_p->e820_table); + set_xen_guest_handle(memmap.buffer, boot_params_p->e820_table); rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); if (rc) { xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc); BUG(); } - pvh_bootparams.e820_entries = memmap.nr_entries; - - if (pvh_bootparams.e820_entries < E820_MAX_ENTRIES_ZEROPAGE - 1) { - pvh_bootparams.e820_table[pvh_bootparams.e820_entries].addr = - ISA_START_ADDRESS; - pvh_bootparams.e820_table[pvh_bootparams.e820_entries].size = - ISA_END_ADDRESS - ISA_START_ADDRESS; - pvh_bootparams.e820_table[pvh_bootparams.e820_entries].type = - E820_TYPE_RESERVED; - pvh_bootparams.e820_entries++; - } else - xen_raw_printk("Warning: Can fit ISA range into e820\n"); - - pvh_bootparams.hdr.cmd_line_ptr = - pvh_start_info.cmdline_paddr; - - /* The first module is always ramdisk. */ - if (pvh_start_info.nr_modules) { - struct hvm_modlist_entry *modaddr = - __va(pvh_start_info.modlist_paddr); - pvh_bootparams.hdr.ramdisk_image = modaddr->paddr; - pvh_bootparams.hdr.ramdisk_size = modaddr->size; - } - - /* - * See Documentation/x86/boot.txt. - * - * Version 2.12 supports Xen entry point but we will use default x86/PC - * environment (i.e. hardware_subarch 0). - */ - pvh_bootparams.hdr.version = (2 << 8) | 12; - pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */ - - x86_init.acpi.get_root_pointer = pvh_get_root_pointer; -} - -/* - * This routine (and those that it might call) should not use - * anything that lives in .bss since that segment will be cleared later. - */ -void __init xen_prepare_pvh(void) -{ - u32 msr; - u64 pfn; - - if (pvh_start_info.magic != XEN_HVM_START_MAGIC_VALUE) { - xen_raw_printk("Error: Unexpected magic value (0x%08x)\n", - pvh_start_info.magic); - BUG(); - } - - xen_pvh = 1; - xen_start_flags = pvh_start_info.flags; - - msr = cpuid_ebx(xen_cpuid_base() + 2); - pfn = __pa(hypercall_page); - wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); - - init_pvh_bootparams(); + boot_params_p->e820_entries = memmap.nr_entries; } |