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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2024-09-07 16:34:39 +0200 |
|---|---|---|
| committer | Song Gao <gaosong@loongson.cn> | 2024-09-12 20:57:50 +0800 |
| commit | b3d4ef83485f31e5fc20bbc7a17c6712b0f903dd (patch) | |
| tree | 6e6d2eb00a529423f3a2c2af6ac1d9632231af13 /hw/loongarch/acpi-build.c | |
| parent | 32c22cc47cf9b99d53aa698c612a215609fdb6c7 (diff) | |
| download | qemu-b3d4ef83485f31e5fc20bbc7a17c6712b0f903dd.zip qemu-b3d4ef83485f31e5fc20bbc7a17c6712b0f903dd.tar.gz qemu-b3d4ef83485f31e5fc20bbc7a17c6712b0f903dd.tar.bz2 | |
hw/loongarch: virt: support up to 4 serial ports
In order to support additional channels of communication using
`-serial`, add several serial ports, up to the standard 4 generally
supported by the 8250 driver.
Fixed: https://lore.kernel.org/all/20240907143439.2792924-1-Jason@zx2c4.com/
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Bibo Mao <maobibo@loongson.cn>
[gaosong: ACPI uart need't reverse order]
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240907143439.2792924-1-Jason@zx2c4.com>
Diffstat (limited to 'hw/loongarch/acpi-build.c')
| -rw-r--r-- | hw/loongarch/acpi-build.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/hw/loongarch/acpi-build.c b/hw/loongarch/acpi-build.c index 2638f87..04107c8 100644 --- a/hw/loongarch/acpi-build.c +++ b/hw/loongarch/acpi-build.c @@ -31,6 +31,7 @@ #include "hw/acpi/generic_event_device.h" #include "hw/pci-host/gpex.h" +#include "sysemu/sysemu.h" #include "sysemu/tpm.h" #include "hw/platform-bus.h" #include "hw/acpi/aml-build.h" @@ -252,23 +253,27 @@ struct AcpiBuildState { MemoryRegion *linker_mr; } AcpiBuildState; -static void build_uart_device_aml(Aml *table) +static void build_uart_device_aml(Aml *table, int index) { Aml *dev; Aml *crs; Aml *pkg0, *pkg1, *pkg2; - uint32_t uart_irq = VIRT_UART_IRQ; - - Aml *scope = aml_scope("_SB"); - dev = aml_device("COMA"); + Aml *scope; + uint32_t uart_irq; + uint64_t base; + + uart_irq = VIRT_UART_IRQ + index; + base = VIRT_UART_BASE + index * VIRT_UART_SIZE; + scope = aml_scope("_SB"); + dev = aml_device("COM%d", index); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0501"))); - aml_append(dev, aml_name_decl("_UID", aml_int(0))); + aml_append(dev, aml_name_decl("_UID", aml_int(index))); aml_append(dev, aml_name_decl("_CCA", aml_int(1))); crs = aml_resource_template(); aml_append(crs, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, - 0, VIRT_UART_BASE, VIRT_UART_BASE + VIRT_UART_SIZE - 1, + 0, base, base + VIRT_UART_SIZE - 1, 0, VIRT_UART_SIZE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_SHARED, &uart_irq, 1)); @@ -401,6 +406,7 @@ static void acpi_dsdt_add_tpm(Aml *scope, LoongArchVirtMachineState *vms) static void build_dsdt(GArray *table_data, BIOSLinker *linker, MachineState *machine) { + int i; Aml *dsdt, *scope, *pkg; LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(machine); AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = lvms->oem_id, @@ -408,7 +414,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, MachineState *machine) acpi_table_begin(&table, table_data); dsdt = init_aml_allocator(); - build_uart_device_aml(dsdt); + for (i = 0; i < VIRT_UART_COUNT; i++) + build_uart_device_aml(dsdt, i); build_pci_device_aml(dsdt, lvms); build_la_ged_aml(dsdt, machine); build_flash_aml(dsdt, lvms); |