From: Simon Glass <sjg@chromium.org> Add an ACPI writer to automatically generate the FPDT table with boot timing information when ACPI tables are created. This allows the OS to read firmware boot-timing metrics from the FPDT table. Co-developed-by: Claude <noreply@anthropic.com> Signed-off-by: Simon Glass <sjg@chromium.org> --- lib/acpi/acpi_table.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c index 31d8d314314..0c1b8e20cf4 100644 --- a/lib/acpi/acpi_table.c +++ b/lib/acpi/acpi_table.c @@ -785,3 +785,14 @@ int acpi_fix_fpdt_checksum(void) return 0; } + +static int acpi_create_fpdt(struct acpi_ctx *ctx, + const struct acpi_writer *entry) +{ + u64 uboot_start; + + uboot_start = bootstage_get_time(BOOTSTAGE_ID_START_UBOOT_F); + + return acpi_write_fpdt(ctx, uboot_start); +} +ACPI_WRITER(6fpdt, "FPDT", acpi_create_fpdt, 0); -- 2.43.0