diff options
Diffstat (limited to 'pc-bios/bios-pq/0005_hpet.patch')
| -rw-r--r-- | pc-bios/bios-pq/0005_hpet.patch | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/pc-bios/bios-pq/0005_hpet.patch b/pc-bios/bios-pq/0005_hpet.patch new file mode 100644 index 0000000000..9347cb501e --- /dev/null +++ b/pc-bios/bios-pq/0005_hpet.patch @@ -0,0 +1,190 @@ +BOCHS BIOS changes to support HPET in QEMU. + +Signed-off-by Beth Kon <eak@us.ibm.com> + +Index: bochs-2.3.7/bios/acpi-dsdt.dsl +=================================================================== +--- bochs-2.3.7.orig/bios/acpi-dsdt.dsl 2008-10-15 12:39:14.000000000 -0500 ++++ bochs-2.3.7/bios/acpi-dsdt.dsl 2008-10-28 07:58:40.000000000 -0500 +@@ -159,6 +159,26 @@ + Return (MEMP) + } + } ++#ifdef BX_QEMU ++ Device(HPET) { ++ Name(_HID, EISAID("PNP0103")) ++ Name(_UID, 0) ++ Method (_STA, 0, NotSerialized) { ++ Return(0x0F) ++ } ++ Name(_CRS, ResourceTemplate() { ++ DWordMemory( ++ ResourceConsumer, PosDecode, MinFixed, MaxFixed, ++ NonCacheable, ReadWrite, ++ 0x00000000, ++ 0xFED00000, ++ 0xFED003FF, ++ 0x00000000, ++ 0x00000400 /* 1K memory: FED00000 - FED003FF */ ++ ) ++ }) ++ } ++#endif + } + + Scope(\_SB.PCI0) { +Index: bochs-2.3.7/bios/rombios32.c +=================================================================== +--- bochs-2.3.7.orig/bios/rombios32.c 2008-10-15 12:39:36.000000000 -0500 ++++ bochs-2.3.7/bios/rombios32.c 2008-11-12 14:41:41.000000000 -0600 +@@ -1087,7 +1087,11 @@ + struct rsdt_descriptor_rev1 + { + ACPI_TABLE_HEADER_DEF /* ACPI common table header */ ++#ifdef BX_QEMU ++ uint32_t table_offset_entry [4]; /* Array of pointers to other */ ++#else + uint32_t table_offset_entry [3]; /* Array of pointers to other */ ++#endif + /* ACPI tables */ + }; + +@@ -1227,6 +1231,32 @@ + #endif + }; + ++#ifdef BX_QEMU ++/* ++ * * ACPI 2.0 Generic Address Space definition. ++ * */ ++struct acpi_20_generic_address { ++ uint8_t address_space_id; ++ uint8_t register_bit_width; ++ uint8_t register_bit_offset; ++ uint8_t reserved; ++ uint64_t address; ++}; ++ ++/* ++ * * HPET Description Table ++ * */ ++struct acpi_20_hpet { ++ ACPI_TABLE_HEADER_DEF /* ACPI common table header */ ++ uint32_t timer_block_id; ++ struct acpi_20_generic_address addr; ++ uint8_t hpet_number; ++ uint16_t min_tick; ++ uint8_t page_protect; ++}; ++#define ACPI_HPET_ADDRESS 0xFED00000UL ++#endif ++ + struct madt_io_apic + { + APIC_HEADER_DEF +@@ -1237,6 +1267,17 @@ + * lines start */ + }; + ++#ifdef BX_QEMU ++struct madt_int_override ++{ ++ APIC_HEADER_DEF ++ uint8_t bus; /* Identifies ISA Bus */ ++ uint8_t source; /* Bus-relative interrupt source */ ++ uint32_t gsi; /* GSI that source will signal */ ++ uint16_t flags; /* MPS INTI flags */ ++}; ++#endif ++ + #include "acpi-dsdt.hex" + + static inline uint16_t cpu_to_le16(uint16_t x) +@@ -1342,6 +1383,10 @@ + struct facs_descriptor_rev1 *facs; + struct multiple_apic_table *madt; + uint8_t *dsdt, *ssdt; ++#ifdef BX_QEMU ++ struct acpi_20_hpet *hpet; ++ uint32_t hpet_addr; ++#endif + uint32_t base_addr, rsdt_addr, fadt_addr, addr, facs_addr, dsdt_addr, ssdt_addr; + uint32_t acpi_tables_size, madt_addr, madt_size; + int i; +@@ -1384,10 +1429,21 @@ + madt_addr = addr; + madt_size = sizeof(*madt) + + sizeof(struct madt_processor_apic) * smp_cpus + ++#ifdef BX_QEMU ++ sizeof(struct madt_io_apic) + sizeof(struct madt_int_override); ++#else + sizeof(struct madt_io_apic); ++#endif + madt = (void *)(addr); + addr += madt_size; + ++#ifdef BX_QEMU ++ addr = (addr + 7) & ~7; ++ hpet_addr = addr; ++ hpet = (void *)(addr); ++ addr += sizeof(*hpet); ++#endif ++ + acpi_tables_size = addr - base_addr; + + BX_INFO("ACPI tables: RSDP addr=0x%08lx ACPI DATA addr=0x%08lx size=0x%x\n", +@@ -1410,6 +1466,9 @@ + rsdt->table_offset_entry[0] = cpu_to_le32(fadt_addr); + rsdt->table_offset_entry[1] = cpu_to_le32(madt_addr); + rsdt->table_offset_entry[2] = cpu_to_le32(ssdt_addr); ++#ifdef BX_QEMU ++ rsdt->table_offset_entry[3] = cpu_to_le32(hpet_addr); ++#endif + acpi_build_table_header((struct acpi_table_header *)rsdt, + "RSDT", sizeof(*rsdt), 1); + +@@ -1448,6 +1507,9 @@ + { + struct madt_processor_apic *apic; + struct madt_io_apic *io_apic; ++#ifdef BX_QEMU ++ struct madt_int_override *int_override; ++#endif + + memset(madt, 0, madt_size); + madt->local_apic_address = cpu_to_le32(0xfee00000); +@@ -1467,10 +1529,34 @@ + io_apic->io_apic_id = smp_cpus; + io_apic->address = cpu_to_le32(0xfec00000); + io_apic->interrupt = cpu_to_le32(0); ++#ifdef BX_QEMU ++ io_apic++; ++ ++ int_override = (void *)io_apic; ++ int_override->type = APIC_XRUPT_OVERRIDE; ++ int_override->length = sizeof(*int_override); ++ int_override->bus = cpu_to_le32(0); ++ int_override->source = cpu_to_le32(0); ++ int_override->gsi = cpu_to_le32(2); ++ int_override->flags = cpu_to_le32(0); ++#endif + + acpi_build_table_header((struct acpi_table_header *)madt, + "APIC", madt_size, 1); + } ++ ++#ifdef BX_QEMU ++ /* HPET */ ++ memset(hpet, 0, sizeof(*hpet)); ++ /* Note timer_block_id value must be kept in sync with value advertised by ++ * emulated hpet ++ */ ++ hpet->timer_block_id = cpu_to_le32(0x8086a201); ++ hpet->addr.address = cpu_to_le32(ACPI_HPET_ADDRESS); ++ acpi_build_table_header((struct acpi_table_header *)hpet, ++ "HPET", sizeof(*hpet), 1); ++#endif ++ + } + + /* SMBIOS entry point -- must be written to a 16-bit aligned address |