78 lines
2.5 KiB
Diff
78 lines
2.5 KiB
Diff
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From d3f8796887051e3975bed57bd7bc3c3def392841 Mon Sep 17 00:00:00 2001
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From: Jiajie Li <lijiajie11@huawei.com>
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Date: Thu, 17 Feb 2022 18:12:47 +0800
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Subject: [PATCH 3/5] standard_vm: add FACS acpi table on x86 plantform
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When a standard vm starts, the hardware reduced feature needs to
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be turned off, so an additional FACS acpi table needs to be added
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Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
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---
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machine/src/standard_vm/mod.rs | 43 ++++++++++++++++++++++++++++++++++
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1 file changed, 43 insertions(+)
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diff --git a/machine/src/standard_vm/mod.rs b/machine/src/standard_vm/mod.rs
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index fe7435a..1fca3bf 100644
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--- a/machine/src/standard_vm/mod.rs
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+++ b/machine/src/standard_vm/mod.rs
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@@ -111,6 +111,13 @@ trait StdMachineOps: AcpiBuilder {
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let mut xsdt_entries = Vec::new();
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+ #[cfg(target_arch = "x86_64")]
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+ {
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+ let facs_addr = Self::build_facs_table(&acpi_tables, &mut loader)
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+ .chain_err(|| "Failed to build ACPI FACS table")?;
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+ xsdt_entries.push(facs_addr);
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+ }
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+
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let dsdt_addr = self
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.build_dsdt_table(&acpi_tables, &mut loader)
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.chain_err(|| "Failed to build ACPI DSDT table")?;
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@@ -394,6 +401,42 @@ trait AcpiBuilder {
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Ok(fadt_begin as u64)
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}
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+ /// Build ACPI FACS table, returns the offset of ACPI FACS table in `acpi_data`.
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+ ///
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+ /// # Arguments
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+ ///
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+ /// `acpi_data` - Bytes streams that ACPI tables converts to.
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+ /// `loader` - ACPI table loader.
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+ #[cfg(target_arch = "x86_64")]
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+ fn build_facs_table(acpi_data: &Arc<Mutex<Vec<u8>>>, loader: &mut TableLoader) -> Result<u64>
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+ where
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+ Self: Sized,
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+ {
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+ let mut facs_data = vec![0_u8; 0x40];
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+ // FACS table signature.
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+ facs_data[0] = b'F';
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+ facs_data[1] = b'A';
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+ facs_data[2] = b'C';
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+ facs_data[3] = b'S';
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+ // FACS table length.
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+ facs_data[4] = 0x40;
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+
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+ let mut locked_acpi_data = acpi_data.lock().unwrap();
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+ let facs_begin = locked_acpi_data.len() as u32;
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+ locked_acpi_data.extend(facs_data);
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+ let facs_end = locked_acpi_data.len() as u32;
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+ drop(locked_acpi_data);
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+
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+ loader.add_cksum_entry(
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+ ACPI_TABLE_FILE,
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+ facs_begin + TABLE_CHECKSUM_OFFSET,
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+ facs_begin,
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+ facs_end - facs_begin,
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+ )?;
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+
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+ Ok(facs_begin as u64)
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+ }
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+
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/// Build ACPI XSDT table, returns the offset of ACPI XSDT table in `acpi_data`.
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///
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/// # Arguments
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--
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2.25.1
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