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/*
* Done by Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
*
****************************************************************************
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
****************************************************************************
*
* Parts are taken from FreeBSD.
*
*/
#include <mini-os/os.h>
#include <mini-os/types.h>
#include <mini-os/lib.h>
#include <mini-os/page.h>
#include <xen/xen.h>
#include <mini-os/privop.h>
#include <xen/callback.h>
#include <mini-os/ia64_cpu.h>
#include <mini-os/hypervisor.h>
#include <mini-os/events.h>
#include <mini-os/console.h>
#include <mini-os/time.h>
#include <mini-os/xmalloc.h>
/* For more console boot messages. */
int bootverbose;
/*
* This structure contains start-of-day info, such as pagetable base pointer,
* address of the shared_info structure, and things like that.
*/
union start_info_union start_info_union;
shared_info_t *HYPERVISOR_shared_info = (shared_info_t *)XSI_BASE;
struct machine_fw machineFwG;
/* This pointer is initialized in ia64.S with the address of the boot param
* area passed by the bootloader. */
struct xen_ia64_boot_param* ia64_boot_paramP;
struct xen_ia64_boot_param ia64BootParamG;
char boot_cmd_line[COMMAND_LINE_SIZE+1];
void
ia64_write_itr_i(ia64_pte_t* pteP, uint32_t reg, uint64_t vAddr,
uint64_t ps, uint64_t pk)
{
/* The virtual address. */
__asm __volatile("mov cr.ifa=%0" :: "r"(vAddr));
/* The page size */
__asm __volatile("mov cr.itir=%0;;" :: "r"((ps << IA64_ITIR_PS)|(pk << IA64_ITIR_KEY)));
/* Put pte into instruction translation register. */
__asm __volatile("itr.i itr[%0]=%1" :: "r"(reg), "r"(*(uint64_t*)pteP));
/* Serialization */
__asm __volatile("srlz.i");
}
void
map_pal_code(void)
{
ia64_pte_t pte;
xen_set_virtual_psr_ic(0);
memset(&pte, 0, sizeof(pte)); /* Prepare the pte */
pte.pte_p = 1; /* present bit */
pte.pte_ma = PTE_MA_WB; /* memory attribute */
pte.pte_a = 1; /* accessed bit */
pte.pte_d = 1; /* dirty bit */
pte.pte_pl = PTE_PL_KERN; /* privilege level */
pte.pte_ar = PTE_AR_RWX; /* access rights */
pte.pte_ppn = ((uint64_t) __pa(machineFwG.ia64_pal_base)) >> 14;
pte.pte_ed = 0; /* exception deferral */
/*
* Must purge here because a itc/dtc with the same address
* may be in the tlb!
*/
ia64_ptc_l(machineFwG.ia64_pal_base, PTE_PS_16K);
ia64_write_itr_i(&pte, IA64_TR_PAL,
(uint64_t)machineFwG.ia64_pal_base,
PTE_PS_16K, IA64_KEY_REG7);
xen_set_virtual_psr_ic(1);
}
/* In ivt.S */
extern char hypervisor_callback;
static void
registerCallback(void)
{
struct callback_register event =
{
.type = CALLBACKTYPE_event,
.address = (unsigned long)&hypervisor_callback,
};
HYPERVISOR_callback_op(CALLBACKOP_register, &event);
}
static void
init_start_info(start_info_t* xen_start_info)
{
/* Make a copy of the start_info structure */
start_info.nr_pages = xen_start_info->nr_pages;
start_info.shared_info = xen_start_info->shared_info;
start_info.flags = xen_start_info->flags;
start_info.store_mfn = xen_start_info->store_mfn;
start_info.store_evtchn = xen_start_info->store_evtchn;
start_info.console.domU.mfn = xen_start_info->console.domU.mfn;
start_info.console.domU.evtchn =
xen_start_info->console.domU.evtchn;
start_info.pt_base = xen_start_info->pt_base;
start_info.nr_pt_frames = xen_start_info->nr_pt_frames;
start_info.mfn_list = xen_start_info->mfn_list;
start_info.mod_start = xen_start_info->mod_start;
start_info.mod_len = xen_start_info->mod_len;
}
static void
init_boot_params(void)
{
ia64BootParamG.command_line = ia64_boot_paramP->command_line;
ia64BootParamG.efi_systab = ia64_boot_paramP->efi_systab;
ia64BootParamG.efi_memmap = ia64_boot_paramP->efi_memmap;
ia64BootParamG.efi_memmap_size = ia64_boot_paramP->efi_memmap_size;
ia64BootParamG.efi_memdesc_size = ia64_boot_paramP->efi_memdesc_size;
ia64BootParamG.efi_memdesc_version =
ia64_boot_paramP->efi_memdesc_version;
ia64BootParamG.console_info.num_cols =
ia64_boot_paramP->console_info.num_cols;
ia64BootParamG.console_info.num_rows =
ia64_boot_paramP->console_info.num_rows;
ia64BootParamG.console_info.orig_x =
ia64_boot_paramP->console_info.orig_x;
ia64BootParamG.console_info.orig_y =
ia64_boot_paramP->console_info.orig_y;
ia64BootParamG.fpswa = ia64_boot_paramP->fpswa;
ia64BootParamG.initrd_start = ia64_boot_paramP->initrd_start;
ia64BootParamG.initrd_size = ia64_boot_paramP->initrd_size;
ia64BootParamG.domain_start = ia64_boot_paramP->domain_start;
ia64BootParamG.domain_size = ia64_boot_paramP->domain_size;
/*
* Copy and parse the boot command line.
* Currently only a check of bootverbose is done.
*/
memset(boot_cmd_line, 0, sizeof(boot_cmd_line));
strncpy(boot_cmd_line,
(char*)__va(ia64BootParamG.command_line), COMMAND_LINE_SIZE);
boot_cmd_line[COMMAND_LINE_SIZE - 1] = '\0';
/* Look for bootverbose. */
if (strstr(boot_cmd_line, "bootverbose"))
bootverbose = 1;
}
static void
set_opt_feature(void)
{
struct xen_ia64_opt_feature optf;
optf.cmd = XEN_IA64_OPTF_IDENT_MAP_REG7;
optf.on = XEN_IA64_OPTF_ON;
optf.pgprot = ((1 << PTE_OFF_P) | (1 << PTE_OFF_A) | (1 << PTE_OFF_D) |
(PTE_MA_WB << PTE_OFF_MA) |
(PTE_PL_KERN << PTE_OFF_PL) |
(PTE_AR_RW << PTE_OFF_AR));
optf.key = IA64_KEY_REG7;
HYPERVISOR_opt_feature(&optf);
}
void
arch_init(start_info_t *si)
{
efi_time_t tm;
static int initialized;
if (initialized)
return;
init_start_info(si);
init_boot_params();
init_efi();
map_pal_code();
ia64_sal_init(machineFwG.ia64_sal_tableP);
if (efi_get_time(&tm)) {
printk("EFI-SystemTime: %d.%d.%d %d:%d:%d",
tm.Day, tm.Month, tm.Year,
tm.Hour, tm.Minute, tm.Second);
if (tm.TimeZone == EFI_UNSPECIFIED_TIMEZONE)
printk(" Timezone not specified!\n");
else
printk(" TimeZone: %d Daylight: 0x%x\n",
tm.TimeZone, tm.Daylight);
} else
printk("efi_get_time() failed\n");
registerCallback();
set_opt_feature();
initialized = 1;
}
void
arch_fini(void)
{
/* TODO */
}
void
arch_print_info(void)
{
int major, minor;
minor = HYPERVISOR_xen_version(XENVER_version, 0);
major = minor >> 16;
minor &= ~0xffffffff;
printk("Running on Xen version: %d.%d\n", major, minor);
#if 0
printk("machine addr of shared_info_t : 0x%lx\n",
start_info.shared_info);
printk("machine page number of shared page: 0x%lx\n",
start_info.store_mfn);
printk("evtchn for store communication : %d\n",
start_info.store_evtchn);
printk("MACHINE address of console page: 0x%lx\n",
start_info.console.domU.mfn);
printk("evtchn for console messages : %d\n",
start_info.console.domU.evtchn);
#endif
if(strlen(boot_cmd_line) > 0)
printk("xen_guest_cmdline : %s\n", boot_cmd_line);
}
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