From patchwork Sun Jun 14 02:55:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Glass X-Patchwork-Id: 242263 List-Id: U-Boot discussion From: sjg at chromium.org (Simon Glass) Date: Sat, 13 Jun 2020 20:55:18 -0600 Subject: [PATCH v3 30/35] x86: Allow devices to write an SSDT In-Reply-To: <20200614025523.40183-1-sjg@chromium.org> References: <20200614025523.40183-1-sjg@chromium.org> Message-ID: <20200613205459.v3.30.Id6fc7367886ec2e2d9f2ddf423ad32720e14e5e5@changeid> 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 Reviewed-by: Wolfgang Wallner Reviewed-by: Bin Meng --- Changes in v3: Drop coreboot_acpi_ids enum Changes in v1: - Use OEM_TABLE_ID instead of ACPI_TABLE_CREATOR - Update ACPI_DSTATUS enum - Drop writing of coreboot tables arch/x86/lib/acpi_table.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index e96acf08d4..4658d88351 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -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);