On Mon, 15 Jul 2024 22:41:21 +0530 Sunil V L <suni...@ventanamicro.com> wrote:
> As per the requirement ACPI_080 in the RISC-V Boot and Runtime Services > (BRS) specification [1], PLIC and APLIC should be in namespace as well. > So, add them using the defined HID. > > [1] - https://github.com/riscv-non-isa/riscv-brs/blob/main/acpi.adoc > (commit : 241575b3189c5d9e60b5e55e78cf0443092713bf) in spec links 'See RVI ACPI IDs' and right below it 'additional guidance', do lead nowhere hence do not clarify anything. > > Signed-off-by: Sunil V L <suni...@ventanamicro.com> > Acked-by: Alistair Francis <alistair.fran...@wdc.com> Acked-by: Igor Mammedov <imamm...@redhat.com> > --- > hw/riscv/virt-acpi-build.c | 32 ++++++++++++++++++++++++++++++++ > 1 file changed, 32 insertions(+) > > diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c > index 0925528160..5f5082a35b 100644 > --- a/hw/riscv/virt-acpi-build.c > +++ b/hw/riscv/virt-acpi-build.c > @@ -141,6 +141,30 @@ static void acpi_dsdt_add_cpus(Aml *scope, > RISCVVirtState *s) > } > } > > +static void acpi_dsdt_add_plic_aplic(Aml *scope, uint8_t socket_count, > + uint64_t mmio_base, uint64_t mmio_size, > + const char *hid) > +{ > + uint64_t plic_aplic_addr; > + uint32_t gsi_base; > + uint8_t socket; > + > + for (socket = 0; socket < socket_count; socket++) { > + plic_aplic_addr = mmio_base + mmio_size * socket; > + gsi_base = VIRT_IRQCHIP_NUM_SOURCES * socket; > + Aml *dev = aml_device("IC%.02X", socket); > + aml_append(dev, aml_name_decl("_HID", aml_string("%s", hid))); > + aml_append(dev, aml_name_decl("_UID", aml_int(socket))); > + aml_append(dev, aml_name_decl("_GSB", aml_int(gsi_base))); > + > + Aml *crs = aml_resource_template(); > + aml_append(crs, aml_memory32_fixed(plic_aplic_addr, mmio_size, > + AML_READ_WRITE)); > + aml_append(dev, aml_name_decl("_CRS", crs)); > + aml_append(scope, dev); > + } > +} > + > static void > acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap, > uint32_t uart_irq) > @@ -411,6 +435,14 @@ static void build_dsdt(GArray *table_data, > > socket_count = riscv_socket_count(ms); > > + if (s->aia_type == VIRT_AIA_TYPE_NONE) { > + acpi_dsdt_add_plic_aplic(scope, socket_count, memmap[VIRT_PLIC].base, > + memmap[VIRT_PLIC].size, "RSCV0001"); > + } else { > + acpi_dsdt_add_plic_aplic(scope, socket_count, > memmap[VIRT_APLIC_S].base, > + memmap[VIRT_APLIC_S].size, "RSCV0002"); > + } > + > acpi_dsdt_add_uart(scope, &memmap[VIRT_UART0], UART0_IRQ); > > if (socket_count == 1) {
