[v4] RISC-V: ACPI: Namespace updates

[PATCH v4 2/9] hw/riscv/virt-acpi-build.c: Update the HID of RISC-V UART

Sunil V L posted 9 patches 2 months ago

Diff against v1 v2 v3
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Maintainers: Sunil V L <sunilvl@ventanamicro.com>, Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bmeng.cn@gmail.com>, Weiwei Li <liwei1518@gmail.com>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <anisinha@redhat.com>

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[PATCH v4 2/9] hw/riscv/virt-acpi-build.c: Update the HID of RISC-V UART

Posted by Sunil V L 2 months ago

The requirement ACPI_060 in the RISC-V BRS specification [1], requires
NS16550 compatible UART to have the HID RSCV0003. So, update the HID for
the UART.

[1] -  https://github.com/riscv-non-isa/riscv-brs/releases/download/v0.0.2/riscv-brs-spec.pdf
       (Chapter 6)

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/riscv/virt-acpi-build.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index 5f5082a35b..36d6a3a412 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -170,7 +170,7 @@ acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
                     uint32_t uart_irq)
 {
     Aml *dev = aml_device("COM0");
-    aml_append(dev, aml_name_decl("_HID", aml_string("PNP0501")));
+    aml_append(dev, aml_name_decl("_HID", aml_string("RSCV0003")));
     aml_append(dev, aml_name_decl("_UID", aml_int(0)));
 
     Aml *crs = aml_resource_template();
-- 
2.43.0