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| author | Simon Glass <sjg@chromium.org> | 2020-07-07 13:12:07 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | 351fef5c579b4cabbd2976e61d1f8a9ef7c06b53 (patch) | |
| tree | 14219f2ff10239aa3133dbcc3a7f934c92f279e1 /arch | |
| parent | 0f7b111f70087f60e84f936fbe0c2a0a243a4fec (diff) | |
| download | u-boot-351fef5c579b4cabbd2976e61d1f8a9ef7c06b53.zip u-boot-351fef5c579b4cabbd2976e61d1f8a9ef7c06b53.tar.gz u-boot-351fef5c579b4cabbd2976e61d1f8a9ef7c06b53.tar.bz2 | |
x86: Allow devices to write an SSDT
Call the new core function to write the SSDT. This is made up of fragments
generated by devices that have the fill_ssdt() method.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/lib/acpi_table.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index e96acf0..4658d88 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -14,6 +14,7 @@ #include <mapmem.h> #include <serial.h> #include <version.h> +#include <acpi/acpigen.h> #include <acpi/acpi_table.h> #include <asm/acpi/global_nvs.h> #include <asm/ioapic.h> @@ -354,6 +355,25 @@ static void acpi_create_spcr(struct acpi_spcr *spcr) header->checksum = table_compute_checksum((void *)spcr, header->length); } +void acpi_create_ssdt(struct acpi_ctx *ctx, struct acpi_table_header *ssdt, + const char *oem_table_id) +{ + memset((void *)ssdt, '\0', sizeof(struct acpi_table_header)); + + acpi_fill_header(ssdt, "SSDT"); + ssdt->revision = acpi_get_table_revision(ACPITAB_SSDT); + ssdt->aslc_revision = 1; + ssdt->length = sizeof(struct acpi_table_header); + + acpi_inc(ctx, sizeof(struct acpi_table_header)); + + acpi_fill_ssdt(ctx); + + /* (Re)calculate length and checksum. */ + ssdt->length = ctx->current - (void *)ssdt; + ssdt->checksum = table_compute_checksum((void *)ssdt, ssdt->length); +} + /* * QEMU's version of write_acpi_tables is defined in drivers/misc/qfw.c */ @@ -363,6 +383,7 @@ ulong write_acpi_tables(ulong start_addr) struct acpi_facs *facs; struct acpi_table_header *dsdt; struct acpi_fadt *fadt; + struct acpi_table_header *ssdt; struct acpi_mcfg *mcfg; struct acpi_madt *madt; struct acpi_csrt *csrt; @@ -418,6 +439,14 @@ ulong write_acpi_tables(ulong start_addr) acpi_create_fadt(fadt, facs, dsdt); acpi_add_table(ctx, fadt); + debug("ACPI: * SSDT\n"); + ssdt = (struct acpi_table_header *)ctx->current; + acpi_create_ssdt(ctx, ssdt, OEM_TABLE_ID); + if (ssdt->length > sizeof(struct acpi_table_header)) { + acpi_inc_align(ctx, ssdt->length); + acpi_add_table(ctx, ssdt); + } + debug("ACPI: * MCFG\n"); mcfg = ctx->current; acpi_create_mcfg(mcfg); |