diff options
| author | Simon Glass <sjg@chromium.org> | 2020-04-08 16:57:39 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-04-16 14:36:28 +0800 |
| commit | bfeb5d460cd129e037c87e9d90b02808d68c0147 (patch) | |
| tree | 879f1cdfc787a1eb66bb8f5a54b6dbdc0c5497b3 /lib | |
| parent | 91fe8b79f6912ab7622169bc1673e2df222e0b57 (diff) | |
| download | u-boot-bfeb5d460cd129e037c87e9d90b02808d68c0147.tar.gz | |
acpi: Add support for DMAR
The DMA Remapping Reporting (DMAR) table contains information about DMA
remapping.
Add a version simple version of this table with only the minimum fields
filled out. i.e. no entries.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/acpi/acpi_table.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c index 3268430cd1..4633dcb948 100644 --- a/lib/acpi/acpi_table.c +++ b/lib/acpi/acpi_table.c @@ -7,6 +7,37 @@ #include <common.h> #include <acpi/acpi_table.h> +#include <dm.h> +#include <cpu.h> + +/* Temporary change to ensure bisectability */ +#ifndef CONFIG_SANDBOX +int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags) +{ + struct acpi_table_header *header = &dmar->header; + struct cpu_info info; + struct udevice *cpu; + int ret; + + ret = uclass_first_device(UCLASS_CPU, &cpu); + if (ret) + return log_msg_ret("cpu", ret); + ret = cpu_get_info(cpu, &info); + if (ret) + return log_msg_ret("info", ret); + memset((void *)dmar, 0, sizeof(struct acpi_dmar)); + + /* Fill out header fields. */ + acpi_fill_header(&dmar->header, "DMAR"); + header->length = sizeof(struct acpi_dmar); + header->revision = acpi_get_table_revision(ACPITAB_DMAR); + + dmar->host_address_width = info.address_width - 1; + dmar->flags = flags; + + return 0; +} +#endif int acpi_get_table_revision(enum acpi_tables table) { |