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/*
* Xen domain firmware emulation support
* Copyright (C) 2004 Hewlett-Packard Co.
* Dan Magenheimer (dan.magenheimer@hp.com)
*
* Copyright (c) 2006, 2007
* Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* dom0 vp model support
*/
#ifdef __XEN__
#include <asm/system.h>
#include <asm/dom_fw_dom0.h>
#include <asm/dom_fw_utils.h>
#else
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <inttypes.h>
#include <xen/arch-ia64.h>
#include <asm/bundle.h>
#include "xg_private.h"
#include "xc_dom.h"
#include "ia64/xc_dom_ia64_util.h"
#define ia64_fc(addr) asm volatile ("fc %0" :: "r"(addr) : "memory")
#endif /* __XEN__ */
#include <xen/acpi.h>
#include <asm/dom_fw.h>
#include <asm/dom_fw_domu.h>
void
xen_ia64_efi_make_md(efi_memory_desc_t *md,
uint32_t type, uint64_t attr,
uint64_t start, uint64_t end)
{
md->type = type;
md->pad = 0;
md->phys_addr = start;
md->virt_addr = 0;
md->num_pages = (end - start) >> EFI_PAGE_SHIFT;
md->attribute = attr;
}
#define EFI_HYPERCALL_PATCH(tgt, call) \
do { \
dom_efi_hypercall_patch(brkimm, \
FW_HYPERCALL_##call##_PADDR, \
FW_HYPERCALL_##call, hypercalls_imva); \
/* Descriptor address. */ \
tables->efi_runtime.tgt = \
FW_FIELD_MPA(func_ptrs) + 8 * pfn; \
/* Descriptor. */ \
tables->func_ptrs[pfn++] = FW_HYPERCALL_##call##_PADDR; \
tables->func_ptrs[pfn++] = 0; \
} while (0)
/**************************************************************************
Hypercall bundle creation
**************************************************************************/
static void
build_hypercall_bundle(uint64_t *imva, uint64_t brkimm, uint64_t hypnum, uint64_t ret)
{
INST64_A5 slot0;
INST64_I19 slot1;
INST64_B4 slot2;
IA64_BUNDLE bundle;
// slot1: mov r2 = hypnum (low 20 bits)
slot0.inst = 0;
slot0.qp = 0; slot0.r1 = 2; slot0.r3 = 0; slot0.major = 0x9;
slot0.imm7b = hypnum; slot0.imm9d = hypnum >> 7;
slot0.imm5c = hypnum >> 16; slot0.s = 0;
// slot1: break brkimm
slot1.inst = 0;
slot1.qp = 0; slot1.x6 = 0; slot1.x3 = 0; slot1.major = 0x0;
slot1.imm20 = brkimm; slot1.i = brkimm >> 20;
// if ret slot2: br.ret.sptk.many rp
// else slot2: br.cond.sptk.many rp
slot2.inst = 0; slot2.qp = 0; slot2.p = 1; slot2.b2 = 0;
slot2.wh = 0; slot2.d = 0; slot2.major = 0x0;
if (ret) {
slot2.btype = 4; slot2.x6 = 0x21;
}
else {
slot2.btype = 0; slot2.x6 = 0x20;
}
bundle.i64[0] = 0; bundle.i64[1] = 0;
bundle.template = 0x11;
bundle.slot0 = slot0.inst; bundle.slot2 = slot2.inst;
bundle.slot1a = slot1.inst; bundle.slot1b = slot1.inst >> 18;
imva[0] = bundle.i64[0]; imva[1] = bundle.i64[1];
ia64_fc(imva);
ia64_fc(imva + 1);
}
static void
build_pal_hypercall_bundles(uint64_t *imva, uint64_t brkimm, uint64_t hypnum)
{
extern unsigned long xen_ia64_pal_call_stub[];
IA64_BUNDLE bundle;
INST64_A5 slot_a5;
INST64_M37 slot_m37;
/*
* The source of the hypercall stub is
* the xen_ia64_pal_call_stub function defined in dom_fw_asm.S.
*/
/* Copy the first bundle and patch the hypercall number. */
bundle.i64[0] = xen_ia64_pal_call_stub[0];
bundle.i64[1] = xen_ia64_pal_call_stub[1];
slot_a5.inst = bundle.slot0;
slot_a5.imm7b = hypnum;
slot_a5.imm9d = hypnum >> 7;
slot_a5.imm5c = hypnum >> 16;
bundle.slot0 = slot_a5.inst;
imva[0] = bundle.i64[0];
imva[1] = bundle.i64[1];
ia64_fc(imva);
ia64_fc(imva + 1);
/* Copy the second bundle and patch the hypercall vector. */
bundle.i64[0] = xen_ia64_pal_call_stub[2];
bundle.i64[1] = xen_ia64_pal_call_stub[3];
slot_m37.inst = bundle.slot0;
slot_m37.imm20a = brkimm;
slot_m37.i = brkimm >> 20;
bundle.slot0 = slot_m37.inst;
imva[2] = bundle.i64[0];
imva[3] = bundle.i64[1];
ia64_fc(imva + 2);
ia64_fc(imva + 3);
}
// builds a hypercall bundle at domain physical address
static void
dom_fpswa_hypercall_patch(uint64_t brkimm, unsigned long imva)
{
unsigned long *entry_imva, *patch_imva;
const unsigned long entry_paddr = FW_HYPERCALL_FPSWA_ENTRY_PADDR;
const unsigned long patch_paddr = FW_HYPERCALL_FPSWA_PATCH_PADDR;
entry_imva = (unsigned long *)(imva + entry_paddr -
FW_HYPERCALL_BASE_PADDR);
patch_imva = (unsigned long *)(imva + patch_paddr -
FW_HYPERCALL_BASE_PADDR);
/* Descriptor. */
*entry_imva++ = patch_paddr;
*entry_imva = 0;
build_hypercall_bundle(patch_imva, brkimm, FW_HYPERCALL_FPSWA, 1);
}
// builds a hypercall bundle at domain physical address
static void
dom_efi_hypercall_patch(uint64_t brkimm, unsigned long paddr,
unsigned long hypercall, unsigned long imva)
{
build_hypercall_bundle((uint64_t *)(imva + paddr -
FW_HYPERCALL_BASE_PADDR),
brkimm, hypercall, 1);
}
// builds a hypercall bundle at domain physical address
static void
dom_fw_hypercall_patch(uint64_t brkimm, unsigned long paddr,
unsigned long hypercall,unsigned long ret,
unsigned long imva)
{
build_hypercall_bundle((uint64_t *)(imva + paddr -
FW_HYPERCALL_BASE_PADDR),
brkimm, hypercall, ret);
}
static void
dom_fw_pal_hypercall_patch(uint64_t brkimm, unsigned long paddr, unsigned long imva)
{
build_pal_hypercall_bundles((uint64_t*)(imva + paddr -
FW_HYPERCALL_BASE_PADDR),
brkimm, FW_HYPERCALL_PAL_CALL);
}
static inline void
print_md(efi_memory_desc_t *md)
{
uint64_t size;
printk(XENLOG_INFO "dom mem: type=%2u, attr=0x%016lx, "
"range=[0x%016lx-0x%016lx) ",
md->type, md->attribute, md->phys_addr,
md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT));
size = md->num_pages << EFI_PAGE_SHIFT;
if (size > ONE_MB)
printk("(%luMB)\n", size >> 20);
else
printk("(%luKB)\n", size >> 10);
}
uint8_t
generate_acpi_checksum(void *tbl, unsigned long len)
{
uint8_t *ptr, sum = 0;
for (ptr = tbl; len > 0 ; len--, ptr++)
sum += *ptr;
return 0 - sum;
}
struct fake_acpi_tables {
struct acpi20_table_rsdp rsdp;
struct xsdt_descriptor_rev2 xsdt;
uint64_t madt_ptr;
struct fadt_descriptor_rev2 fadt;
struct facs_descriptor_rev2 facs;
struct acpi_table_header dsdt;
uint8_t aml[8 + 11 * MAX_VIRT_CPUS];
struct acpi_table_madt madt;
struct acpi_table_lsapic lsapic[MAX_VIRT_CPUS];
uint8_t pm1a_evt_blk[4];
uint8_t pm1a_cnt_blk[1];
uint8_t pm_tmr_blk[4];
};
#define ACPI_TABLE_MPA(field) \
FW_ACPI_BASE_PADDR + offsetof(struct fake_acpi_tables, field);
/* Create enough of an ACPI structure to make the guest OS ACPI happy. */
void
dom_fw_fake_acpi(domain_t *d, struct fake_acpi_tables *tables)
{
struct acpi20_table_rsdp *rsdp = &tables->rsdp;
struct xsdt_descriptor_rev2 *xsdt = &tables->xsdt;
struct fadt_descriptor_rev2 *fadt = &tables->fadt;
struct facs_descriptor_rev2 *facs = &tables->facs;
struct acpi_table_header *dsdt = &tables->dsdt;
struct acpi_table_madt *madt = &tables->madt;
struct acpi_table_lsapic *lsapic = tables->lsapic;
int i;
int aml_len;
int nbr_cpus;
BUILD_BUG_ON(sizeof(struct fake_acpi_tables) >
(FW_ACPI_END_PADDR - FW_ACPI_BASE_PADDR));
memset(tables, 0, sizeof(struct fake_acpi_tables));
/* setup XSDT (64bit version of RSDT) */
memcpy(xsdt->signature, XSDT_SIG, sizeof(xsdt->signature));
/* XSDT points to both the FADT and the MADT, so add one entry */
xsdt->length = sizeof(struct xsdt_descriptor_rev2) + sizeof(uint64_t);
xsdt->revision = 1;
memcpy(xsdt->oem_id, "XEN", 3);
memcpy(xsdt->oem_table_id, "Xen/ia64", 8);
memcpy(xsdt->asl_compiler_id, "XEN", 3);
xsdt->asl_compiler_revision = xen_ia64_version(d);
xsdt->table_offset_entry[0] = ACPI_TABLE_MPA(fadt);
tables->madt_ptr = ACPI_TABLE_MPA(madt);
xsdt->checksum = generate_acpi_checksum(xsdt, xsdt->length);
/* setup FADT */
memcpy(fadt->signature, FADT_SIG, sizeof(fadt->signature));
fadt->length = sizeof(struct fadt_descriptor_rev2);
fadt->revision = FADT2_REVISION_ID;
memcpy(fadt->oem_id, "XEN", 3);
memcpy(fadt->oem_table_id, "Xen/ia64", 8);
memcpy(fadt->asl_compiler_id, "XEN", 3);
fadt->asl_compiler_revision = xen_ia64_version(d);
memcpy(facs->signature, FACS_SIG, sizeof(facs->signature));
facs->version = 1;
facs->length = sizeof(struct facs_descriptor_rev2);
fadt->xfirmware_ctrl = ACPI_TABLE_MPA(facs);
fadt->Xdsdt = ACPI_TABLE_MPA(dsdt);
/*
* All of the below FADT entries are filled it to prevent warnings
* from sanity checks in the ACPI CA. Emulate required ACPI hardware
* registers in system memory.
*/
fadt->pm1_evt_len = 4;
fadt->xpm1a_evt_blk.address_space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
fadt->xpm1a_evt_blk.register_bit_width = 8;
fadt->xpm1a_evt_blk.address = ACPI_TABLE_MPA(pm1a_evt_blk);
fadt->pm1_cnt_len = 1;
fadt->xpm1a_cnt_blk.address_space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
fadt->xpm1a_cnt_blk.register_bit_width = 8;
fadt->xpm1a_cnt_blk.address = ACPI_TABLE_MPA(pm1a_cnt_blk);
fadt->pm_tm_len = 4;
fadt->xpm_tmr_blk.address_space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
fadt->xpm_tmr_blk.register_bit_width = 8;
fadt->xpm_tmr_blk.address = ACPI_TABLE_MPA(pm_tmr_blk);
fadt->checksum = generate_acpi_checksum(fadt, fadt->length);
/* setup RSDP */
memcpy(rsdp->signature, RSDP_SIG, strlen(RSDP_SIG));
memcpy(rsdp->oem_id, "XEN", 3);
rsdp->revision = 2; /* ACPI 2.0 includes XSDT */
rsdp->length = sizeof(struct acpi20_table_rsdp);
rsdp->xsdt_address = ACPI_TABLE_MPA(xsdt);
rsdp->checksum = generate_acpi_checksum(rsdp,
ACPI_RSDP_CHECKSUM_LENGTH);
rsdp->ext_checksum = generate_acpi_checksum(rsdp, rsdp->length);
/* setup DSDT with trivial namespace. */
memcpy(dsdt->signature, DSDT_SIG, strlen(DSDT_SIG));
dsdt->revision = 1;
memcpy(dsdt->oem_id, "XEN", 3);
memcpy(dsdt->oem_table_id, "Xen/ia64", 8);
memcpy(dsdt->asl_compiler_id, "XEN", 3);
dsdt->asl_compiler_revision = xen_ia64_version(d);
/* Trivial namespace, avoids ACPI CA complaints */
tables->aml[0] = 0x10; /* Scope */
tables->aml[1] = 0x40; /* length/offset to next object (patched) */
tables->aml[2] = 0x00;
memcpy(&tables->aml[3], "_SB_", 4);
/* The processor object isn't absolutely necessary, revist for SMP */
aml_len = 7;
for (i = 0; i < 3; i++) {
unsigned char *p = tables->aml + aml_len;
p[0] = 0x5b; /* processor object */
p[1] = 0x83;
p[2] = 0x0b; /* next */
p[3] = 'C';
p[4] = 'P';
snprintf ((char *)p + 5, 3, "%02x", i);
if (i < 16)
p[5] = 'U';
p[7] = i; /* acpi_id */
p[8] = 0; /* pblk_addr */
p[9] = 0;
p[10] = 0;
p[11] = 0;
p[12] = 0; /* pblk_len */
aml_len += 13;
}
tables->aml[1] = 0x40 + ((aml_len - 1) & 0x0f);
tables->aml[2] = (aml_len - 1) >> 4;
dsdt->length = sizeof(struct acpi_table_header) + aml_len;
dsdt->checksum = generate_acpi_checksum(dsdt, dsdt->length);
/* setup MADT */
memcpy(madt->header.signature, APIC_SIG, sizeof(madt->header.signature));
madt->header.revision = 2;
memcpy(madt->header.oem_id, "XEN", 3);
memcpy(madt->header.oem_table_id, "Xen/ia64", 8);
memcpy(madt->header.asl_compiler_id, "XEN", 3);
madt->header.asl_compiler_revision = xen_ia64_version(d);
/* An LSAPIC entry describes a CPU. */
nbr_cpus = 0;
for (i = 0; i < MAX_VIRT_CPUS; i++) {
lsapic[i].header.type = ACPI_MADT_LSAPIC;
lsapic[i].header.length = sizeof(struct acpi_table_lsapic);
lsapic[i].acpi_id = i;
lsapic[i].id = i;
lsapic[i].eid = 0;
if (xen_ia64_is_vcpu_allocated(d, i)) {
lsapic[i].flags.enabled = 1;
nbr_cpus++;
}
}
madt->header.length = sizeof(struct acpi_table_madt) +
nbr_cpus * sizeof(struct acpi_table_lsapic);
madt->header.checksum = generate_acpi_checksum(madt,
madt->header.length);
return;
}
int
efi_mdt_cmp(const void *a, const void *b)
{
const efi_memory_desc_t *x = a, *y = b;
if (x->phys_addr > y->phys_addr)
return 1;
if (x->phys_addr < y->phys_addr)
return -1;
/* num_pages == 0 is allowed. */
if (x->num_pages > y->num_pages)
return 1;
if (x->num_pages < y->num_pages)
return -1;
return 0;
}
int
dom_fw_init(domain_t *d,
uint64_t brkimm,
struct xen_ia64_boot_param *bp,
struct fw_tables *tables,
unsigned long hypercalls_imva,
unsigned long maxmem)
{
unsigned long pfn;
unsigned char checksum;
char *cp;
int num_mds, i;
int fpswa_supported = 0;
/* Caller must zero-clear fw_tables */
/* EFI systab. */
tables->efi_systab.hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
tables->efi_systab.hdr.revision = EFI_SYSTEM_TABLE_REVISION;
tables->efi_systab.hdr.headersize = sizeof(tables->efi_systab.hdr);
memcpy(tables->fw_vendor,FW_VENDOR,sizeof(FW_VENDOR));
tables->efi_systab.fw_vendor = FW_FIELD_MPA(fw_vendor);
tables->efi_systab.fw_revision = 1;
tables->efi_systab.runtime = (void *)FW_FIELD_MPA(efi_runtime);
tables->efi_systab.nr_tables = NUM_EFI_SYS_TABLES;
tables->efi_systab.tables = FW_FIELD_MPA(efi_tables);
/* EFI runtime. */
tables->efi_runtime.hdr.signature = EFI_RUNTIME_SERVICES_SIGNATURE;
tables->efi_runtime.hdr.revision = EFI_RUNTIME_SERVICES_REVISION;
tables->efi_runtime.hdr.headersize = sizeof(tables->efi_runtime.hdr);
pfn = 0;
EFI_HYPERCALL_PATCH(get_time,EFI_GET_TIME);
EFI_HYPERCALL_PATCH(set_time,EFI_SET_TIME);
EFI_HYPERCALL_PATCH(get_wakeup_time,EFI_GET_WAKEUP_TIME);
EFI_HYPERCALL_PATCH(set_wakeup_time,EFI_SET_WAKEUP_TIME);
EFI_HYPERCALL_PATCH(set_virtual_address_map,
EFI_SET_VIRTUAL_ADDRESS_MAP);
EFI_HYPERCALL_PATCH(get_variable,EFI_GET_VARIABLE);
EFI_HYPERCALL_PATCH(get_next_variable,EFI_GET_NEXT_VARIABLE);
EFI_HYPERCALL_PATCH(set_variable,EFI_SET_VARIABLE);
EFI_HYPERCALL_PATCH(get_next_high_mono_count,
EFI_GET_NEXT_HIGH_MONO_COUNT);
EFI_HYPERCALL_PATCH(reset_system,EFI_RESET_SYSTEM);
/* System tables. */
tables->efi_tables[0].guid = SAL_SYSTEM_TABLE_GUID;
tables->efi_tables[0].table = FW_FIELD_MPA(sal_systab);
for (i = 1; i < NUM_EFI_SYS_TABLES; i++) {
tables->efi_tables[i].guid = NULL_GUID;
tables->efi_tables[i].table = 0;
}
if (xen_ia64_is_dom0(d)) {
efi_systable_init_dom0(tables);
} else {
efi_systable_init_domu(tables);
}
/* fill in the SAL system table: */
memcpy(tables->sal_systab.signature, "SST_", 4);
tables->sal_systab.size = sizeof(tables->sal_systab);
tables->sal_systab.sal_rev_minor = 1;
tables->sal_systab.sal_rev_major = 0;
tables->sal_systab.entry_count = 2;
memcpy((char *)tables->sal_systab.oem_id, "Xen/ia64", 8);
memcpy((char *)tables->sal_systab.product_id, "Xen/ia64", 8);
/* PAL entry point: */
tables->sal_ed.type = SAL_DESC_ENTRY_POINT;
tables->sal_ed.pal_proc = FW_HYPERCALL_PAL_CALL_PADDR;
dom_fw_pal_hypercall_patch(brkimm, tables->sal_ed.pal_proc,
hypercalls_imva);
/* SAL entry point. */
tables->sal_ed.sal_proc = FW_HYPERCALL_SAL_CALL_PADDR;
dom_fw_hypercall_patch(brkimm, tables->sal_ed.sal_proc,
FW_HYPERCALL_SAL_CALL, 1, hypercalls_imva);
tables->sal_ed.gp = 0; /* will be ignored */
/* Fill an AP wakeup descriptor. */
tables->sal_wakeup.type = SAL_DESC_AP_WAKEUP;
tables->sal_wakeup.mechanism = IA64_SAL_AP_EXTERNAL_INT;
tables->sal_wakeup.vector = XEN_SAL_BOOT_RENDEZ_VEC;
/* Compute checksum. */
checksum = 0;
for (cp = (char *)&tables->sal_systab;
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