Update the SPCR table to accommodate the SPCR Table revision 4 [1].
The SPCR table has been modified to adhere to the revision 4 format [2].
[1]: https://learn.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table
[2]: https://github.com/acpica/acpica/pull/931
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
---
hw/acpi/aml-build.c | 20 ++++++++++++++++----
hw/arm/virt-acpi-build.c | 10 +++++++---
hw/riscv/virt-acpi-build.c | 12 +++++++++---
include/hw/acpi/acpi-defs.h | 7 +++++--
include/hw/acpi/aml-build.h | 2 +-
5 files changed, 38 insertions(+), 13 deletions(-)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 6d4517cfbe..ad0a306db1 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1996,7 +1996,7 @@ static void build_processor_hierarchy_node(GArray *tbl, uint32_t flags,
void build_spcr(GArray *table_data, BIOSLinker *linker,
const AcpiSpcrData *f, const uint8_t rev,
- const char *oem_id, const char *oem_table_id)
+ const char *oem_id, const char *oem_table_id, const char *name)
{
AcpiTable table = { .sig = "SPCR", .rev = rev, .oem_id = oem_id,
.oem_table_id = oem_table_id };
@@ -2042,9 +2042,21 @@ void build_spcr(GArray *table_data, BIOSLinker *linker,
build_append_int_noprefix(table_data, f->pci_flags, 4);
/* PCI Segment */
build_append_int_noprefix(table_data, f->pci_segment, 1);
- /* Reserved */
- build_append_int_noprefix(table_data, 0, 4);
-
+ if (rev < 4) {
+ /* Reserved */
+ build_append_int_noprefix(table_data, 0, 4);
+ } else {
+ /* UartClkFreq */
+ build_append_int_noprefix(table_data, f->uart_clk_freq, 4);
+ /* PreciseBaudrate */
+ build_append_int_noprefix(table_data, f->precise_baudrate, 4);
+ /* NameSpaceStringLength */
+ build_append_int_noprefix(table_data, f->namespace_string_length, 2);
+ /* NameSpaceStringOffset */
+ build_append_int_noprefix(table_data, f->namespace_string_offset, 2);
+ /* NamespaceString[] */
+ g_array_append_vals(table_data, name, f->namespace_string_length);
+ }
acpi_table_end(linker, &table);
}
/*
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index f76fb117ad..cc27ba7daf 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -435,7 +435,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
/*
* Serial Port Console Redirection Table (SPCR)
- * Rev: 1.07
+ * Rev: 1.10
*/
static void
spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
@@ -464,8 +464,12 @@ spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
.pci_flags = 0,
.pci_segment = 0,
};
-
- build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id);
+ /*
+ * Passing NULL as the SPCR Table for Revision 2 doesn't support
+ * NameSpaceString.
+ */
+ build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id,
+ NULL);
}
/*
diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index 36d6a3a412..68ef15acac 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -200,14 +200,15 @@ acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
/*
* Serial Port Console Redirection Table (SPCR)
- * Rev: 1.07
+ * Rev: 1.10
*/
static void
spcr_setup(GArray *table_data, BIOSLinker *linker, RISCVVirtState *s)
{
+ const char name[] = ".";
AcpiSpcrData serial = {
- .interface_type = 0, /* 16550 compatible */
+ .interface_type = 0x12, /* 16550 compatible */
.base_addr.id = AML_AS_SYSTEM_MEMORY,
.base_addr.width = 32,
.base_addr.offset = 0,
@@ -229,9 +230,14 @@ spcr_setup(GArray *table_data, BIOSLinker *linker, RISCVVirtState *s)
.pci_function = 0,
.pci_flags = 0,
.pci_segment = 0,
+ .uart_clk_freq = 0,
+ .precise_baudrate = 0,
+ .namespace_string_length = sizeof(name),
+ .namespace_string_offset = 88,
};
- build_spcr(table_data, linker, &serial, 2, s->oem_id, s->oem_table_id);
+ build_spcr(table_data, linker, &serial, 4, s->oem_id, s->oem_table_id,
+ name);
}
/* RHCT Node[N] starts at offset 56 */
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index 0e6e82b339..2e6e341998 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -112,7 +112,6 @@ typedef struct AcpiSpcrData {
uint8_t flow_control;
uint8_t terminal_type;
uint8_t language;
- uint8_t reserved1;
uint16_t pci_device_id; /* Must be 0xffff if not PCI device */
uint16_t pci_vendor_id; /* Must be 0xffff if not PCI device */
uint8_t pci_bus;
@@ -120,7 +119,11 @@ typedef struct AcpiSpcrData {
uint8_t pci_function;
uint32_t pci_flags;
uint8_t pci_segment;
- uint32_t reserved2;
+ uint32_t uart_clk_freq;
+ uint32_t precise_baudrate;
+ uint32_t namespace_string_length;
+ uint32_t namespace_string_offset;
+ char namespace_string[];
} AcpiSpcrData;
#define ACPI_FADT_ARM_PSCI_COMPLIANT (1 << 0)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index a3784155cb..68c0f2dbee 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -500,5 +500,5 @@ void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
void build_spcr(GArray *table_data, BIOSLinker *linker,
const AcpiSpcrData *f, const uint8_t rev,
- const char *oem_id, const char *oem_table_id);
+ const char *oem_id, const char *oem_table_id, const char *name);
#endif
--
2.34.1On Fri, Aug 23, 2024 at 04:31:41AM -0700, Sia Jee Heng wrote:
> Update the SPCR table to accommodate the SPCR Table revision 4 [1].
> The SPCR table has been modified to adhere to the revision 4 format [2].
>
> [1]: https://learn.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table
> [2]: https://github.com/acpica/acpica/pull/931
>
> Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
> Acked-by: Alistair Francis <alistair.francis@wdc.com>
> ---
> hw/acpi/aml-build.c | 20 ++++++++++++++++----
> hw/arm/virt-acpi-build.c | 10 +++++++---
> hw/riscv/virt-acpi-build.c | 12 +++++++++---
> include/hw/acpi/acpi-defs.h | 7 +++++--
> include/hw/acpi/aml-build.h | 2 +-
> 5 files changed, 38 insertions(+), 13 deletions(-)
>
> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> index 6d4517cfbe..ad0a306db1 100644
> --- a/hw/acpi/aml-build.c
> +++ b/hw/acpi/aml-build.c
> @@ -1996,7 +1996,7 @@ static void build_processor_hierarchy_node(GArray *tbl, uint32_t flags,
>
> void build_spcr(GArray *table_data, BIOSLinker *linker,
> const AcpiSpcrData *f, const uint8_t rev,
> - const char *oem_id, const char *oem_table_id)
> + const char *oem_id, const char *oem_table_id, const char *name)
> {
> AcpiTable table = { .sig = "SPCR", .rev = rev, .oem_id = oem_id,
> .oem_table_id = oem_table_id };
> @@ -2042,9 +2042,21 @@ void build_spcr(GArray *table_data, BIOSLinker *linker,
> build_append_int_noprefix(table_data, f->pci_flags, 4);
> /* PCI Segment */
> build_append_int_noprefix(table_data, f->pci_segment, 1);
> - /* Reserved */
> - build_append_int_noprefix(table_data, 0, 4);
> -
> + if (rev < 4) {
> + /* Reserved */
> + build_append_int_noprefix(table_data, 0, 4);
> + } else {
> + /* UartClkFreq */
> + build_append_int_noprefix(table_data, f->uart_clk_freq, 4);
> + /* PreciseBaudrate */
> + build_append_int_noprefix(table_data, f->precise_baudrate, 4);
> + /* NameSpaceStringLength */
> + build_append_int_noprefix(table_data, f->namespace_string_length, 2);
> + /* NameSpaceStringOffset */
> + build_append_int_noprefix(table_data, f->namespace_string_offset, 2);
> + /* NamespaceString[] */
> + g_array_append_vals(table_data, name, f->namespace_string_length);
> + }
> acpi_table_end(linker, &table);
> }
> /*
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index f76fb117ad..cc27ba7daf 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -435,7 +435,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>
> /*
> * Serial Port Console Redirection Table (SPCR)
> - * Rev: 1.07
> + * Rev: 1.10
Why should this comment be updated? Since revision 2 of SPCR table ARM
uses corresponds to only 1.07 right?
> */
> static void
> spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> @@ -464,8 +464,12 @@ spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> .pci_flags = 0,
> .pci_segment = 0,
> };
> -
> - build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id);
> + /*
> + * Passing NULL as the SPCR Table for Revision 2 doesn't support
> + * NameSpaceString.
> + */
> + build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id,
> + NULL);
> }
>
> /*
> diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
> index 36d6a3a412..68ef15acac 100644
> --- a/hw/riscv/virt-acpi-build.c
> +++ b/hw/riscv/virt-acpi-build.c
> @@ -200,14 +200,15 @@ acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
>
> /*
> * Serial Port Console Redirection Table (SPCR)
> - * Rev: 1.07
> + * Rev: 1.10
> */
>
> static void
> spcr_setup(GArray *table_data, BIOSLinker *linker, RISCVVirtState *s)
> {
> + const char name[] = ".";
> AcpiSpcrData serial = {
> - .interface_type = 0, /* 16550 compatible */
> + .interface_type = 0x12, /* 16550 compatible */
> .base_addr.id = AML_AS_SYSTEM_MEMORY,
> .base_addr.width = 32,
> .base_addr.offset = 0,
> @@ -229,9 +230,14 @@ spcr_setup(GArray *table_data, BIOSLinker *linker, RISCVVirtState *s)
> .pci_function = 0,
> .pci_flags = 0,
> .pci_segment = 0,
> + .uart_clk_freq = 0,
> + .precise_baudrate = 0,
> + .namespace_string_length = sizeof(name),
> + .namespace_string_offset = 88,
> };
>
> - build_spcr(table_data, linker, &serial, 2, s->oem_id, s->oem_table_id);
> + build_spcr(table_data, linker, &serial, 4, s->oem_id, s->oem_table_id,
> + name);
> }
>
> /* RHCT Node[N] starts at offset 56 */
> diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
> index 0e6e82b339..2e6e341998 100644
> --- a/include/hw/acpi/acpi-defs.h
> +++ b/include/hw/acpi/acpi-defs.h
> @@ -112,7 +112,6 @@ typedef struct AcpiSpcrData {
> uint8_t flow_control;
> uint8_t terminal_type;
> uint8_t language;
> - uint8_t reserved1;
> uint16_t pci_device_id; /* Must be 0xffff if not PCI device */
> uint16_t pci_vendor_id; /* Must be 0xffff if not PCI device */
> uint8_t pci_bus;
> @@ -120,7 +119,11 @@ typedef struct AcpiSpcrData {
> uint8_t pci_function;
> uint32_t pci_flags;
> uint8_t pci_segment;
> - uint32_t reserved2;
> + uint32_t uart_clk_freq;
> + uint32_t precise_baudrate;
> + uint32_t namespace_string_length;
> + uint32_t namespace_string_offset;
> + char namespace_string[];
> } AcpiSpcrData;
>
> #define ACPI_FADT_ARM_PSCI_COMPLIANT (1 << 0)
> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> index a3784155cb..68c0f2dbee 100644
> --- a/include/hw/acpi/aml-build.h
> +++ b/include/hw/acpi/aml-build.h
> @@ -500,5 +500,5 @@ void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
>
> void build_spcr(GArray *table_data, BIOSLinker *linker,
> const AcpiSpcrData *f, const uint8_t rev,
> - const char *oem_id, const char *oem_table_id);
> + const char *oem_id, const char *oem_table_id, const char *name);
> #endif
Otherwise, LGTM.
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> -----Original Message-----
> From: Sunil V L <sunilvl@ventanamicro.com>
> Sent: Friday, August 23, 2024 9:15 PM
> To: JeeHeng Sia <jeeheng.sia@starfivetech.com>
> Cc: qemu-arm@nongnu.org; qemu-devel@nongnu.org; qemu-riscv@nongnu.org; mst@redhat.com; imammedo@redhat.com;
> anisinha@redhat.com; peter.maydell@linaro.org; shannon.zhaosl@gmail.com; palmer@dabbelt.com; alistair.francis@wdc.com;
> bin.meng@windriver.com; liwei1518@gmail.com; dbarboza@ventanamicro.com; zhiwei_liu@linux.alibaba.com
> Subject: Re: [PATCH RESEND v4 2/3] hw/acpi: Upgrade ACPI SPCR table to support SPCR table revision 4 format
>
> On Fri, Aug 23, 2024 at 04:31:41AM -0700, Sia Jee Heng wrote:
> > Update the SPCR table to accommodate the SPCR Table revision 4 [1].
> > The SPCR table has been modified to adhere to the revision 4 format [2].
> >
> > [1]: https://learn.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table
> > [2]: https://github.com/acpica/acpica/pull/931
> >
> > Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
> > Acked-by: Alistair Francis <alistair.francis@wdc.com>
> > ---
> > hw/acpi/aml-build.c | 20 ++++++++++++++++----
> > hw/arm/virt-acpi-build.c | 10 +++++++---
> > hw/riscv/virt-acpi-build.c | 12 +++++++++---
> > include/hw/acpi/acpi-defs.h | 7 +++++--
> > include/hw/acpi/aml-build.h | 2 +-
> > 5 files changed, 38 insertions(+), 13 deletions(-)
> >
> > diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> > index 6d4517cfbe..ad0a306db1 100644
> > --- a/hw/acpi/aml-build.c
> > +++ b/hw/acpi/aml-build.c
> > @@ -1996,7 +1996,7 @@ static void build_processor_hierarchy_node(GArray *tbl, uint32_t flags,
> >
> > void build_spcr(GArray *table_data, BIOSLinker *linker,
> > const AcpiSpcrData *f, const uint8_t rev,
> > - const char *oem_id, const char *oem_table_id)
> > + const char *oem_id, const char *oem_table_id, const char *name)
> > {
> > AcpiTable table = { .sig = "SPCR", .rev = rev, .oem_id = oem_id,
> > .oem_table_id = oem_table_id };
> > @@ -2042,9 +2042,21 @@ void build_spcr(GArray *table_data, BIOSLinker *linker,
> > build_append_int_noprefix(table_data, f->pci_flags, 4);
> > /* PCI Segment */
> > build_append_int_noprefix(table_data, f->pci_segment, 1);
> > - /* Reserved */
> > - build_append_int_noprefix(table_data, 0, 4);
> > -
> > + if (rev < 4) {
> > + /* Reserved */
> > + build_append_int_noprefix(table_data, 0, 4);
> > + } else {
> > + /* UartClkFreq */
> > + build_append_int_noprefix(table_data, f->uart_clk_freq, 4);
> > + /* PreciseBaudrate */
> > + build_append_int_noprefix(table_data, f->precise_baudrate, 4);
> > + /* NameSpaceStringLength */
> > + build_append_int_noprefix(table_data, f->namespace_string_length, 2);
> > + /* NameSpaceStringOffset */
> > + build_append_int_noprefix(table_data, f->namespace_string_offset, 2);
> > + /* NamespaceString[] */
> > + g_array_append_vals(table_data, name, f->namespace_string_length);
> > + }
> > acpi_table_end(linker, &table);
> > }
> > /*
> > diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> > index f76fb117ad..cc27ba7daf 100644
> > --- a/hw/arm/virt-acpi-build.c
> > +++ b/hw/arm/virt-acpi-build.c
> > @@ -435,7 +435,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> >
> > /*
> > * Serial Port Console Redirection Table (SPCR)
> > - * Rev: 1.07
> > + * Rev: 1.10
> Why should this comment be updated? Since revision 2 of SPCR table ARM
> uses corresponds to only 1.07 right?
You are right. I will revert this.
>
> > */
> > static void
> > spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> > @@ -464,8 +464,12 @@ spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> > .pci_flags = 0,
> > .pci_segment = 0,
> > };
> > -
> > - build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id);
> > + /*
> > + * Passing NULL as the SPCR Table for Revision 2 doesn't support
> > + * NameSpaceString.
> > + */
> > + build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id,
> > + NULL);
> > }
> >
> > /*
> > diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
> > index 36d6a3a412..68ef15acac 100644
> > --- a/hw/riscv/virt-acpi-build.c
> > +++ b/hw/riscv/virt-acpi-build.c
> > @@ -200,14 +200,15 @@ acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
> >
> > /*
> > * Serial Port Console Redirection Table (SPCR)
> > - * Rev: 1.07
> > + * Rev: 1.10
> > */
> >
> > static void
> > spcr_setup(GArray *table_data, BIOSLinker *linker, RISCVVirtState *s)
> > {
> > + const char name[] = ".";
> > AcpiSpcrData serial = {
> > - .interface_type = 0, /* 16550 compatible */
> > + .interface_type = 0x12, /* 16550 compatible */
> > .base_addr.id = AML_AS_SYSTEM_MEMORY,
> > .base_addr.width = 32,
> > .base_addr.offset = 0,
> > @@ -229,9 +230,14 @@ spcr_setup(GArray *table_data, BIOSLinker *linker, RISCVVirtState *s)
> > .pci_function = 0,
> > .pci_flags = 0,
> > .pci_segment = 0,
> > + .uart_clk_freq = 0,
> > + .precise_baudrate = 0,
> > + .namespace_string_length = sizeof(name),
> > + .namespace_string_offset = 88,
> > };
> >
> > - build_spcr(table_data, linker, &serial, 2, s->oem_id, s->oem_table_id);
> > + build_spcr(table_data, linker, &serial, 4, s->oem_id, s->oem_table_id,
> > + name);
> > }
> >
> > /* RHCT Node[N] starts at offset 56 */
> > diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
> > index 0e6e82b339..2e6e341998 100644
> > --- a/include/hw/acpi/acpi-defs.h
> > +++ b/include/hw/acpi/acpi-defs.h
> > @@ -112,7 +112,6 @@ typedef struct AcpiSpcrData {
> > uint8_t flow_control;
> > uint8_t terminal_type;
> > uint8_t language;
> > - uint8_t reserved1;
> > uint16_t pci_device_id; /* Must be 0xffff if not PCI device */
> > uint16_t pci_vendor_id; /* Must be 0xffff if not PCI device */
> > uint8_t pci_bus;
> > @@ -120,7 +119,11 @@ typedef struct AcpiSpcrData {
> > uint8_t pci_function;
> > uint32_t pci_flags;
> > uint8_t pci_segment;
> > - uint32_t reserved2;
> > + uint32_t uart_clk_freq;
> > + uint32_t precise_baudrate;
> > + uint32_t namespace_string_length;
> > + uint32_t namespace_string_offset;
> > + char namespace_string[];
> > } AcpiSpcrData;
> >
> > #define ACPI_FADT_ARM_PSCI_COMPLIANT (1 << 0)
> > diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> > index a3784155cb..68c0f2dbee 100644
> > --- a/include/hw/acpi/aml-build.h
> > +++ b/include/hw/acpi/aml-build.h
> > @@ -500,5 +500,5 @@ void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
> >
> > void build_spcr(GArray *table_data, BIOSLinker *linker,
> > const AcpiSpcrData *f, const uint8_t rev,
> > - const char *oem_id, const char *oem_table_id);
> > + const char *oem_id, const char *oem_table_id, const char *name);
> > #endif
>
> Otherwise, LGTM.
>
> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
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