# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1307118117 -3600
# Node ID 396b11c69144ee43b43f3c892e2a620bde74d4ad
# Parent d5097672d125b5d43fc621e603042dcf8b16cb2c
hvmloader: allocate ACPI tables as we go
Rather than building the tables twice, once purely to figure out the
size, just allocate each individual table as we go.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
diff -r d5097672d125 -r 396b11c69144 tools/firmware/hvmloader/acpi/build.c
--- a/tools/firmware/hvmloader/acpi/build.c Fri Jun 03 17:21:40 2011 +0100
+++ b/tools/firmware/hvmloader/acpi/build.c Fri Jun 03 17:21:57 2011 +0100
@@ -68,12 +68,21 @@
return (inb(0x88) == 0x1F);
}
-static int construct_madt(struct acpi_20_madt *madt)
+static struct acpi_20_madt *construct_madt(void)
{
+ struct acpi_20_madt *madt;
struct acpi_20_madt_intsrcovr *intsrcovr;
struct acpi_20_madt_ioapic *io_apic;
struct acpi_20_madt_lapic *lapic;
- int i, offset = 0;
+ int i, sz;
+
+ sz = sizeof(struct acpi_20_madt);
+ sz += sizeof(struct acpi_20_madt_intsrcovr) * 16;
+ sz += sizeof(struct acpi_20_madt_ioapic);
+ sz += sizeof(struct acpi_20_madt_lapic) * nr_processor_objects;
+
+ madt = mem_alloc(sz, 16);
+ if (!madt) return NULL;
memset(madt, 0, sizeof(*madt));
madt->header.signature = ACPI_2_0_MADT_SIGNATURE;
@@ -85,7 +94,6 @@
madt->header.creator_revision = ACPI_CREATOR_REVISION;
madt->lapic_addr = LAPIC_BASE_ADDRESS;
madt->flags = ACPI_PCAT_COMPAT;
- offset += sizeof(*madt);
intsrcovr = (struct acpi_20_madt_intsrcovr *)(madt + 1);
for ( i = 0; i < 16; i++ )
@@ -113,7 +121,6 @@
continue;
}
- offset += sizeof(*intsrcovr);
intsrcovr++;
}
@@ -123,7 +130,6 @@
io_apic->length = sizeof(*io_apic);
io_apic->ioapic_id = IOAPIC_ID;
io_apic->ioapic_addr = IOAPIC_BASE_ADDRESS;
- offset += sizeof(*io_apic);
lapic = (struct acpi_20_madt_lapic *)(io_apic + 1);
madt_lapic0_addr = (uint32_t)lapic;
@@ -138,20 +144,23 @@
lapic->flags = ((i < hvm_info->nr_vcpus) &&
test_bit(i, hvm_info->vcpu_online)
? ACPI_LOCAL_APIC_ENABLED : 0);
- offset += sizeof(*lapic);
lapic++;
}
- madt->header.length = offset;
- set_checksum(madt, offsetof(struct acpi_header, checksum), offset);
+ madt->header.length = (unsigned char *)lapic - (unsigned char *)madt;
+ set_checksum(madt, offsetof(struct acpi_header, checksum),
+ madt->header.length);
madt_csum_addr = (uint32_t)&madt->header.checksum;
- return align16(offset);
+ return madt;
}
-static int construct_hpet(struct acpi_20_hpet *hpet)
+static struct acpi_20_hpet *construct_hpet(void)
{
- int offset;
+ struct acpi_20_hpet *hpet;
+
+ hpet = mem_alloc(sizeof(*hpet), 16);
+ if (!hpet) return NULL;
memset(hpet, 0, sizeof(*hpet));
hpet->header.signature = ACPI_2_0_HPET_SIGNATURE;
@@ -163,20 +172,20 @@
hpet->header.creator_revision = ACPI_CREATOR_REVISION;
hpet->timer_block_id = 0x8086a201;
hpet->addr.address = ACPI_HPET_ADDRESS;
- offset = sizeof(*hpet);
- hpet->header.length = offset;
- set_checksum(hpet, offsetof(struct acpi_header, checksum), offset);
-
- return offset;
+ hpet->header.length = sizeof(*hpet);
+ set_checksum(hpet, offsetof(struct acpi_header, checksum),
+ hpet->header.length = sizeof(*hpet));
+ return hpet;
}
-static int construct_secondary_tables(uint8_t *buf, unsigned long *table_ptrs)
+static int construct_secondary_tables(unsigned long *table_ptrs)
{
- int offset = 0, nr_tables = 0;
+ int nr_tables = 0;
struct acpi_20_madt *madt;
struct acpi_20_hpet *hpet;
struct acpi_20_tcpa *tcpa;
+ unsigned char *ssdt;
static const uint16_t tis_signature[] = {0x0001, 0x0001, 0x0001};
uint16_t *tis_hdr;
void *lasa;
@@ -184,22 +193,23 @@
/* MADT. */
if ( (hvm_info->nr_vcpus > 1) || hvm_info->apic_mode )
{
- madt = (struct acpi_20_madt *)&buf[offset];
- offset += construct_madt(madt);
+ madt = construct_madt();
+ if (!madt) return -1;
table_ptrs[nr_tables++] = (unsigned long)madt;
}
/* HPET. Always included in DSDT, so always include it here too. */
/* (And it's unconditionally required by Windows SVVP tests.) */
- hpet = (struct acpi_20_hpet *)&buf[offset];
- offset += construct_hpet(hpet);
+ hpet = construct_hpet();
+ if (!hpet) return -1;
table_ptrs[nr_tables++] = (unsigned long)hpet;
- if ( battery_port_exists() )
+ if ( battery_port_exists() )
{
- table_ptrs[nr_tables++] = (unsigned long)&buf[offset];
- memcpy(&buf[offset], ssdt_pm, sizeof(ssdt_pm));
- offset += align16(sizeof(ssdt_pm));
+ ssdt = mem_alloc(sizeof(ssdt_pm), 16);
+ if (!ssdt) return -1;
+ memcpy(ssdt, ssdt_pm, sizeof(ssdt_pm));
+ table_ptrs[nr_tables++] = (unsigned long)ssdt;
}
/* TPM TCPA and SSDT. */
@@ -208,13 +218,14 @@
(tis_hdr[1] == tis_signature[1]) &&
(tis_hdr[2] == tis_signature[2]) )
{
- memcpy(&buf[offset], ssdt_tpm, sizeof(ssdt_tpm));
- table_ptrs[nr_tables++] = (unsigned long)&buf[offset];
- offset += align16(sizeof(ssdt_tpm));
+ ssdt = mem_alloc(sizeof(ssdt_tpm), 16);
+ if (!ssdt) return -1;
+ memcpy(ssdt, ssdt_tpm, sizeof(ssdt_tpm));
+ table_ptrs[nr_tables++] = (unsigned long)ssdt;
- tcpa = (struct acpi_20_tcpa *)&buf[offset];
+ tcpa = mem_alloc(sizeof(struct acpi_20_tcpa), 16);
+ if (!tcpa) return -1;
memset(tcpa, 0, sizeof(*tcpa));
- offset += align16(sizeof(*tcpa));
table_ptrs[nr_tables++] = (unsigned long)tcpa;
tcpa->header.signature = ACPI_2_0_TCPA_SIGNATURE;
@@ -225,7 +236,7 @@
tcpa->header.oem_revision = ACPI_OEM_REVISION;
tcpa->header.creator_id = ACPI_CREATOR_ID;
tcpa->header.creator_revision = ACPI_CREATOR_REVISION;
- if ( (lasa = mem_alloc(ACPI_2_0_TCPA_LAML_SIZE, 0)) != NULL )
+ if ( (lasa = mem_alloc(ACPI_2_0_TCPA_LAML_SIZE, 16)) != NULL )
{
tcpa->lasa = virt_to_phys(lasa);
tcpa->laml = ACPI_2_0_TCPA_LAML_SIZE;
@@ -237,12 +248,10 @@
}
table_ptrs[nr_tables] = 0;
- return align16(offset);
+ return nr_tables;
}
-static void __acpi_build_tables(unsigned int physical,
- uint8_t *buf,
- int *low_sz, int *high_sz)
+void acpi_build_tables(unsigned int physical)
{
struct acpi_20_rsdp *rsdp;
struct acpi_20_rsdt *rsdt;
@@ -252,27 +261,28 @@
struct acpi_20_facs *facs;
unsigned char *dsdt;
unsigned long secondary_tables[16];
- int offset = 0, i;
+ int nr_secondaries, i;
/*
* Fill in high-memory data structures, starting at @buf.
*/
- facs = (struct acpi_20_facs *)&buf[offset];
+ facs = mem_alloc(sizeof(struct acpi_20_facs), 16);
+ if (!facs) goto oom;
memcpy(facs, &Facs, sizeof(struct acpi_20_facs));
- offset += align16(sizeof(struct acpi_20_facs));
- dsdt = (unsigned char *)&buf[offset];
if ( hvm_info->nr_vcpus <= 15 )
{
+ dsdt = mem_alloc(dsdt_15cpu_len, 16);
+ if (!dsdt) goto oom;
memcpy(dsdt, &dsdt_15cpu, dsdt_15cpu_len);
- offset += align16(dsdt_15cpu_len);
nr_processor_objects = 15;
}
else
{
+ dsdt = mem_alloc(dsdt_anycpu_len, 16);
+ if (!dsdt) goto oom;
memcpy(dsdt, &dsdt_anycpu, dsdt_anycpu_len);
- offset += align16(dsdt_anycpu_len);
nr_processor_objects = HVM_MAX_VCPUS;
}
@@ -284,9 +294,9 @@
* compatible revision 1 FADT that is linked with the RSDT. Refer to:
* http://www.acpi.info/presentations/S01USMOBS169_OS%20new.ppt
*/
- fadt_10 = (struct acpi_10_fadt *)&buf[offset];
+ fadt_10 = mem_alloc(sizeof(struct acpi_10_fadt), 16);
+ if (!fadt_10) goto oom;
memcpy(fadt_10, &Fadt, sizeof(struct acpi_10_fadt));
- offset += align16(sizeof(struct acpi_10_fadt));
fadt_10->header.length = sizeof(struct acpi_10_fadt);
fadt_10->header.revision = ACPI_1_0_FADT_REVISION;
fadt_10->dsdt = (unsigned long)dsdt;
@@ -295,9 +305,9 @@
offsetof(struct acpi_header, checksum),
sizeof(struct acpi_10_fadt));
- fadt = (struct acpi_20_fadt *)&buf[offset];
+ fadt = mem_alloc(sizeof(struct acpi_20_fadt), 16);
+ if (!fadt) goto oom;
memcpy(fadt, &Fadt, sizeof(struct acpi_20_fadt));
- offset += align16(sizeof(struct acpi_20_fadt));
fadt->dsdt = (unsigned long)dsdt;
fadt->x_dsdt = (unsigned long)dsdt;
fadt->firmware_ctrl = (unsigned long)facs;
@@ -306,42 +316,42 @@
offsetof(struct acpi_header, checksum),
sizeof(struct acpi_20_fadt));
- offset += construct_secondary_tables(&buf[offset], secondary_tables);
+ nr_secondaries = construct_secondary_tables(secondary_tables);
+ if ( nr_secondaries < 0 )
+ goto oom;
- xsdt = (struct acpi_20_xsdt *)&buf[offset];
+ xsdt = mem_alloc(sizeof(struct acpi_20_xsdt)+
+ sizeof(uint64_t)*nr_secondaries,
+ 16);
+ if (!xsdt) goto oom;
memcpy(xsdt, &Xsdt, sizeof(struct acpi_header));
xsdt->entry[0] = (unsigned long)fadt;
for ( i = 0; secondary_tables[i]; i++ )
xsdt->entry[i+1] = secondary_tables[i];
xsdt->header.length = sizeof(struct acpi_header) + (i+1)*sizeof(uint64_t);
- offset += align16(xsdt->header.length);
set_checksum(xsdt,
offsetof(struct acpi_header, checksum),
xsdt->header.length);
- rsdt = (struct acpi_20_rsdt *)&buf[offset];
+ rsdt = mem_alloc(sizeof(struct acpi_20_rsdt)+
+ sizeof(uint32_t)*nr_secondaries,
+ 16);
+ if (!rsdt) goto oom;
memcpy(rsdt, &Rsdt, sizeof(struct acpi_header));
rsdt->entry[0] = (unsigned long)fadt_10;
for ( i = 0; secondary_tables[i]; i++ )
rsdt->entry[i+1] = secondary_tables[i];
rsdt->header.length = sizeof(struct acpi_header) + (i+1)*sizeof(uint32_t);
- offset += align16(rsdt->header.length);
set_checksum(rsdt,
offsetof(struct acpi_header, checksum),
rsdt->header.length);
- *high_sz = offset;
-
/*
* Fill in low-memory data structures: bios_info_table and RSDP.
*/
- buf = (uint8_t *)physical;
- offset = 0;
-
- rsdp = (struct acpi_20_rsdp *)&buf[offset];
+ rsdp = (struct acpi_20_rsdp *)physical;
memcpy(rsdp, &Rsdp, sizeof(struct acpi_20_rsdp));
- offset += align16(sizeof(struct acpi_20_rsdp));
rsdp->rsdt_address = (unsigned long)rsdt;
rsdp->xsdt_address = (unsigned long)xsdt;
set_checksum(rsdp,
@@ -351,27 +361,11 @@
offsetof(struct acpi_20_rsdp, extended_checksum),
sizeof(struct acpi_20_rsdp));
- *low_sz = offset;
-}
+ return;
-void acpi_build_tables(unsigned int physical)
-{
- int high_sz, low_sz;
- uint8_t *buf;
+oom:
+ printf("unable to build ACPI tables: out of memory\n");
- /* Find out size of high-memory ACPI data area. */
- buf = (uint8_t *)&_end;
- __acpi_build_tables(physical, buf, &low_sz, &high_sz);
- memset(buf, 0, high_sz);
-
- /* Allocate data area and set up ACPI tables there. */
- buf = mem_alloc(high_sz, 0);
- __acpi_build_tables(physical, buf, &low_sz, &high_sz);
-
- printf(" - Lo data: %08x-%08x\n"
- " - Hi data: %08lx-%08lx\n",
- physical, physical + low_sz - 1,
- (unsigned long)buf, (unsigned long)buf + high_sz - 1);
}
/*
_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog
|
Home