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bhyve: build RSDP table by basl

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Building the RSDP table by basl will allow it to be loaded by qemu's
ACPI table loader in the future.

Reviewed by:		jhb, markj (older version)
Approved by:		manu (mentor)
MFC after:		2 weeks
Sponsored by:		Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D37001
This commit is contained in:
Corvin Köhne 2022-04-06 11:10:43 +02:00
parent f3dcdf8be4
commit 03e7111fa6
No known key found for this signature in database
GPG key ID: D854DA56315E026A
1 changed files with 41 additions and 34 deletions
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75
usr.sbin/bhyve/acpi.c
View file

@ -32,11 +32,9 @@
* bhyve ACPI table generator.
*
* Create the minimal set of ACPI tables required to boot FreeBSD (and
* hopefully other o/s's) by writing out ASL template files for each of
* the tables and the compiling them to AML with the Intel iasl compiler.
* The AML files are then read into guest memory.
* hopefully other o/s's).
*
* The tables are placed in the guest's ROM area just below 1MB physical,
* The tables are placed in the guest's ROM area just below 1MB physical,
* above the MPTable.
*
* Layout (No longer correct at FADT and beyond due to properly
@ -117,7 +115,6 @@ __FBSDID("$FreeBSD$");
static int basl_keep_temps;
static int basl_verbose_iasl;
static int basl_ncpu;
static uint32_t basl_acpi_base = BHYVE_ACPI_BASE;
static uint32_t hpet_capabilities;
/*
@ -149,32 +146,6 @@ struct basl_fio {
#define EFFLUSH(x) \
if (fflush(x) != 0) goto err_exit;
static int
basl_fwrite_rsdp(FILE *fp)
{
EFPRINTF(fp, "/*\n");
EFPRINTF(fp, " * bhyve RSDP template\n");
EFPRINTF(fp, " */\n");
EFPRINTF(fp, "[0008]\t\tSignature : \"RSD PTR \"\n");
EFPRINTF(fp, "[0001]\t\tChecksum : 43\n");
EFPRINTF(fp, "[0006]\t\tOem ID : \"BHYVE \"\n");
EFPRINTF(fp, "[0001]\t\tRevision : 02\n");
EFPRINTF(fp, "[0004]\t\tRSDT Address : %08X\n",
basl_acpi_base + RSDT_OFFSET);
EFPRINTF(fp, "[0004]\t\tLength : 00000024\n");
EFPRINTF(fp, "[0008]\t\tXSDT Address : 00000000%08X\n",
basl_acpi_base + XSDT_OFFSET);
EFPRINTF(fp, "[0001]\t\tExtended Checksum : 00\n");
EFPRINTF(fp, "[0003]\t\tReserved : 000000\n");
EFFLUSH(fp);
return (0);
err_exit:
return (errno);
}
/*
* Helper routines for writing to the DSDT from other modules.
*/
@ -712,6 +683,43 @@ build_mcfg(struct vmctx *const ctx)
return (0);
}
static int
build_rsdp(struct vmctx *const ctx)
{
ACPI_TABLE_RSDP rsdp;
struct basl_table *table;
BASL_EXEC(basl_table_create(&table, ctx, ACPI_RSDP_NAME,
BASL_TABLE_ALIGNMENT, 0));
memset(&rsdp, 0, sizeof(rsdp));
memcpy(rsdp.Signature, ACPI_SIG_RSDP, 8);
rsdp.Checksum = 0; /* patched by basl */
memcpy(rsdp.OemId, "BHYVE ", ACPI_OEM_ID_SIZE);
rsdp.Revision = 2;
rsdp.RsdtPhysicalAddress = htole32(0); /* patched by basl */
rsdp.Length = htole32(0); /* patched by basl */
rsdp.XsdtPhysicalAddress = htole64(0); /* patched by basl */
rsdp.ExtendedChecksum = 0; /* patched by basl */
BASL_EXEC(basl_table_append_bytes(table, &rsdp, sizeof(rsdp)));
BASL_EXEC(basl_table_add_checksum(table,
offsetof(ACPI_TABLE_RSDP, Checksum), 0, 20));
BASL_EXEC(basl_table_add_pointer(table, ACPI_SIG_RSDT,
offsetof(ACPI_TABLE_RSDP, RsdtPhysicalAddress),
sizeof(rsdp.RsdtPhysicalAddress)));
BASL_EXEC(basl_table_add_length(table,
offsetof(ACPI_TABLE_RSDP, Length), sizeof(rsdp.Length)));
BASL_EXEC(basl_table_add_pointer(table, ACPI_SIG_XSDT,
offsetof(ACPI_TABLE_RSDP, XsdtPhysicalAddress),
sizeof(rsdp.XsdtPhysicalAddress)));
BASL_EXEC(basl_table_add_checksum(table,
offsetof(ACPI_TABLE_RSDP, ExtendedChecksum), 0,
BASL_TABLE_CHECKSUM_LEN_FULL_TABLE));
return (0);
}
static int
build_rsdt(struct vmctx *const ctx)
{
@ -768,14 +776,13 @@ acpi_build(struct vmctx *ctx, int ncpu)
BASL_EXEC(basl_make_templates());
/*
* Run through all the ASL files, compiling them and
* copying them into guest memory
* Generate ACPI tables and copy them into guest memory.
*
* According to UEFI Specification v6.3 chapter 5.1 the FADT should be
* the first table pointed to by XSDT. For that reason, build it as the
* first table after XSDT.
*/
BASL_EXEC(basl_compile(ctx, basl_fwrite_rsdp, 0));
BASL_EXEC(build_rsdp(ctx));
BASL_EXEC(build_rsdt(ctx));
BASL_EXEC(build_xsdt(ctx));
BASL_EXEC(build_fadt(ctx));